55results about How to "Achieve interference fit" patented technology

The invention discloses a constrained ceramic-metal composite bulletproof armored plate and a making method thereof. The constrained ceramic-metal composite bulletproof armor plate consists of a plurality of constrained ceramic-metal composite bulletproof units; each constrained ceramic-metal composite bulletproof unit comprises a metal back plate, a metal constrained plate and a ceramic block, wherein the metal constrained plate and the ceramic block are arranged on the metal back plate, the ceramic block is arranged in the metal constrained plate, and the ceramic block and the metal constrained plate are assembled and connected through interference fit. The constrained ceramic-metal composite bulletproof armored plate disclosed by the invention has a broad application prospect in variousbulletproof occasions of armed helicopters, armored cars, ships and warships, tanks and the like.

The invention relates to a low-voltage electromagnet riveting method of a metal-composite material combined structure, belonging to the manufacture filed of aviation and space engineering and solving the problems that the traditional riveting technology is difficult to realize the riveting of rivets with high strength, large diameter and large length on the metal-composite material, the metal-composite material combined structure has unstable riveting quality, the riveted structure has short life and the uniform interference riveting forming of rivets with large length cannot be ensured. The low-voltage electromagnet riveting method of the metal-composite material combined structure comprises the following steps: firstly, fixing metals and composite materials on which through holes are drilled; secondly, leading the rivets to pass through the through holes of the metals and the composite materials; thirdly, contacting a rivet head of a rivet gun with one side of a rivet tail and contacting one side of the rivet tail with top iron; and fourthly, giving out a processing signal to the rivet gun by a low-voltage electromagnetic riveting system and finishing the riveting. The invention is applied in the riveting process of the metal-composite material combined structures of large-sized cylinders of large-sized planes and rocket projectile bodies.

The invention relates to an automatic assembly device for a watch winding stem assembly. The automatic assembly device comprises a vibration feeding machine, a material fetching tray, a clamping mechanism and a vibration assembly mechanism, wherein the material fetching tray, the clamping mechanism and the vibration assembly mechanism are installed on a machine frame. The automatic assembly device is characterized in that the clamping mechanism comprises two clamping belts which are symmetrically arranged side by side and clamping assemblies fixed to the clamping belts at equal intervals. The winding stem and a stem cap are clamped synchronously through the clamping assemblies, and then are assembled into a whole in a vibration and interference mode step by step through a vibrating plate arranged under the clamping belts and driven by an electromagnetic vibration arm. The automatic assembly device has the major characteristics that the winding stem and the stem cap are pressed inwards step by step in an electromagnetic vibration mode, so that the interference assembly process is realized; the clamping assemblies fixed to the clamping belts symmetrically arranged side by side are used for clamping the winding stem and the stem cap respectively and synchronously, lower clamping blocks in the clamping assemblies can move appropriately relative to upper clamping blocks and are used for clamping the stem cap to press the stem cap into the winding stem step by step, and therefore the interference assembly process is realized, in other words, the winding stem is protected by the upper clamping blocks.

The invention discloses a mechanical adherent flexible coupling probe for geological detection. The probe comprises a sleeve and an oscillating wave sensor mounted in the sleeve. The problem is characterized in that the front end of the sleeve is provided with an axially flexible mechanical limiting head, and a prime mechanism is mounted in a cavity in the middle of the sleeve, and connected with a radial expansion mechanism. After being driven by a prime force, the prime mechanism drives the radial expansion mechanism to expand outwardly from the sidewall of the sleeve. The mechanical adherent flexible coupling probe for geological detection has the advantages that installation is convenient, recovery is easy, the manner by using button as couplant is replaced, long-term interference fit between the probe and a hole wall is ensured, and the signal transmission effect is ensured.

The invention belongs to the field of heat exchanger machining, and particularly relates to a tube threading device for a heat exchange tube bundle. The tube threading device comprises a frame, a fixing and conveying unit, a pressing and conveying unit, and a driving unit, wherein the frame is provided with an open accommodating space, the fixing and conveying unit is positioned in the open accommodating space, the pressing and conveying unit is located in the open accommodating space and located above the fixing and conveying unit, an adjustable space for containing heat exchange tubes is formed between the pressing and conveying unit and the fixing and conveying unit, and the driving unit is used for driving the fixing and conveying unit and the pressing and conveying unit to move. The tube threading device for the heat exchange tube bundle has the beneficial effects that continuous threading of the heat exchange tubes is achieved, the labor intensity of workers is reduced, the number of operators is reduced, cost is saved, the tube threading efficiency is improved, and the heat exchanger production speed is increased.

An orthotopic artificial bladder prosthesis includes an enclosure or bag or balloon and hollow elements (200; 300) for the forced connection of ureters and urethra to the bladder in the absence of sutures.

The invention relates to a loop heat pipe evaporator assembling tool and an assembling method mainly used for assembling an evaporator in a loop heat pipe and belongs to the technical field of two phase heat transmission of a loop heat pipe. According to the invention, on one hand, interference fit between a capillary core and a metal outer shell is realized, the situation that the capillary core does not crack after being mounted in the metal outer shell is ensured, the hot charging success rate is high, small-scale production can be met, the production cost is reduced, and the production efficiency is improved; and on the other hand, the surface of the capillary core is not scratched, powder does not fall off the surface of the capillary core, the product surface is free of oxidation and pollution, and the service life and the reliability of the product are prolonged and improved.

The invention relates to a shoe sole clamping and positioning device. The shoe sole clamping and positioning device comprises a clamping mechanism and a shoe sole carrier. The clamping mechanism comprises two clamping assemblies which are oppositely arranged. The clamping assembly comprises a clamping unit. The clamping unit comprises a clamping driver, a floating base connected with the clampingdriver, a pressing block hinged to the floating base, and clamping wheels connected to the pressing block in a pivoted mode. The multiple clamping wheels are distributed at an extrusion end of the pressing block. The sole carrier is arranged between the two clamping assemblies. The sole carriers are used for loading a sole. According to the shoe sole clamping and positioning device, the shoe solecarrier located between the two clamping assemblies is used for bearing the shoe sole. The clamping assembly is provided with the floating extrusion clamping unit, the shoe soles with different peripheral side shapes can be used, a traditional manual holding mode is replaced, mechanical positioning of the shoe soles during outer side polishing is achieved, the positioning effect is stable, the positioning precision is high, product quality control is facilitated, and the working efficiency is improved.

The invention discloses a composite structure enhanced dual-material powder forging part and a preparation method thereof. The part at least comprises a function layer and a supporting layer, materials are selected according to different requirements of the environment for the function layer and the supporting layer, in other words, materials are selected as needed, and therefore the whole utilization rate of the materials is increased, unnecessary waste is lowered, and the production cost is lowered. The specific size of the supporting layer and the function layer is simulated by means of deform simulation software, and the composite structure enhanced dual-material powder forging part is obtained through the five steps of laying powder into a cold pressing mold cavity, cold pressing thepowder part, performing sintering, performing hot forging and performing shot blasting, and the method is suitable for large-scale production, economical and efficient.

The invention discloses a motor stator-rotor co-assembly device and method. The motor stator-rotor co-assembly device comprises a stator displacement device for driving a stator to rotate to change the axial direction of the stator, a grabbing hanger for hanging a rotor and a bolt automatic tightening device for automatically tightening a connecting bolt between a rotor end cover and a stator stock, wherein the stator displacement device is connected with the stator stock; the grabbing hanger is connected with a rotor shaft extending end; the bolt automatic tightening device is in matched connection with the connecting bolt; the rotor is assembled to the stator along with tightening of the connecting bolt; and the rotor end cover is in interference fit with the stator stock along with tightening of the connecting bolt. Automatic transposition of the stator and positioning after transposition can be realized, the stator and the rotor are ensured to complete vertical co-assembly along avertical direction, when the connecting bolt is completely tightened, stator-rotor co-assembly is realized, interference fit assembly between the rotor end cover and the stator stock is also realized,and the stator-rotor co-assembly automation level is improved, and the universality and the practicability are high.

The invention relates to a crimping device for assembling a moving end assembly of a circuit breaker. The crimping device for assembling the moving end assembly of the circuit breaker comprises: a workpiece positioning seat which is provided with a moving main contact positioning cavity for positioning a moving main contact along the axial direction and the radial direction; an axial pressure applying devices for pressing and positioning the corresponding nozzle assemblies or valve assemblies to the moving main contact; and a first crimping device and a second crimping device, wherein the first crimping device is used for applying pressure to a first crimping part on the moving main contact, and the second crimping device is used for applying pressure to a second crimping part on the moving main contact. According to the crimping device, connection among the moving main contact, the nozzle assembly and the valve assembly can be realized, interference assembly of the valve assembly andthe moving main contact can also be realized, the operation is convenient, and the crimping efficiency is high.

The invention discloses a multi-station pinion shaft pressing assembling machine which comprises a stand, a steel-shaft feeding device, a pinion feeding device, a pre-positioning clamp, a shaft pressing assembling device, a transmission mechanism and a control system. The transmission mechanism is arranged on the stand and comprises a motor, a main transmission wheel, an auxiliary transmission wheel and a transmission chain or a transmission belt; the axes of all the transmission wheels and the motor are arranged horizontally; the shaft of the main transmission wheel is connected with the shaft of the motor; the pre-positioning clamp is fixedly connected with the transmission chain or the transmission belt; the motor is controlled by the control system to drive the transmission chain or the transmission belt to transmit intermittently in a positioning way; a shaft dropping station, a pinion pushing station and a shaft pressing assembling station are arranged on the stand along the transmission direction of the transmission chain or the transmission belt; and the steel-shaft feeding device, the pinion feeding device and the shaft pressing assembling device are arranged on the shaft dropping station, the pinion pushing station and the shaft pressing assembling station correspondingly. By adoption of the multi-station pinion shaft pressing assembling machine, the efficiency of assembling the pinion and the steel shaft assembly can be effectively improved, the interference fit of the pinion and the steel shaft can be realized reliably, the discharging can be convenient, the manpower can be saved, and the shaft pressing assembling of the pinion with different types and the steel shaft can be realized through adjustment or reconstruction.

The invention provides an interference assembling tool for a cylindrical part. The interference assembling tool for the cylindrical part comprises a jack. The jack comprises a cylinder body and a telescopic piston rod. A through hole axially penetrating through the cylinder body and the piston rod is formed in the jack. A guide rod is arranged in the through hole in a penetrating mode. A left blocking piece and a right blocking piece are installed at the two ends of the guide rod respectively. The jack is located between the left blocking piece and the right blocking piece. The cylindrical part is assembled in a component under the pushing force of the piston rod of the jack, and therefore interference assembling of the cylindrical part is achieved, the whole assembling process is conveniently and fast conducted, time-saving and labor-saving, one or two cylindrical parts can also be assembled once, and assembling efficiency is improved. The interference assembling tool for the cylindrical part is suitable for interference assembling of cylindrical parts of all kinds of sizes, and is wider in applicable range.

The invention belongs to the field of electrostatic plate-type electric fields and discloses an electrostatic plate type electric field. The electrostatic plate type electric field comprises a shell;multiple high-voltage negative plates, multiple low-voltage negative plates, multiple positive plates, a first connecting rod, a second connecting rod and a third connecting rod are arranged in the shell; the multiple high-voltage negative plates are inserted into the first connecting rod in a penetrating mode and connected with the first connecting rod in an interference fit mode; the multiple low-voltage negative plates are inserted into the second connecting rod in a penetrating mode and connected with the second connecting rod in an interference fit mode; and the multiple positive plates are inserted into the third connecting rod in a penetrating mode and connected with the third connecting rod in an interference fit mode. The electrode plates and the connecting rods of the electrostatic plate type electric field are in interference fit, connection is stable, assembling is convenient, and meanwhile, the invention further provides an assembling tool and an assembling method.

The invention relates to an anti-rotating insulating support and an anti-rotating method thereof. The anti-rotating method is characterized in that the outer side surface of a metal inner sleeve and the inner side surface of a middle medium are respectively provided with a first platform mutually fit along the direction of the pipe length so as to lead one part of a curve surface attached tightlybetween the metal inner sleeve and the middle medium to be attached tightly in a plane; an outer ring of the part of the cross section of the metal inner sleeve, provided with the first platform, is around flaw shape of a round flaw angle between 15 degrees to 90 degrees; the outer side surface of the middle medium and the inner side surface of the metal outer ring are respectively provided witha second platform fit along the direction of the pipe length so as to lead one part of a curve surface attached tightly between the middle medium and the metal outer ring to be attached tightly in a plane; and an outer ring of the part of the cross section of the middle medium, provided with the second platform, is a round flaw shape of a round flaw angle between 15 degrees to 60 degrees. The invention can prevent relative rotation among three-layer parts of the insulating support, simultaneously has simple method, easy processing, low cost and reliable work.

The invention discloses an interference fit-type flange. The interference fit-type flange comprises a first flange plate and a second flange plate which are fixed by bolts; a flange connecting pillaris arranged above the first flange plate; the inner wall of the top end of the flange connecting pillar is in a stepped shape to form a multi-stage ring connecting groove; a self-adjusting gasket is arranged between the first flange plate and the second flange plate; the self-adjusting gasket mainly consists of a ring flat gasket, an isolating layer and a protecting layer, wherein the isolating layer is attached to the surface of the ring flat gasket, and the protecting layer is attached to the surface of the isolating layer; the upper surface and the lower surface of the isolating layer bothprotrude outwards in an equally spaced manner to form a plurality of concentric ring sealing tapes penetrating through the protecting layer; an oil cavity is formed in the ring flat gasket; the oil cavity extends into all the ring sealing tapes; a proper amount of hydraulic oil is held in the oil cavity; ring sealing grooves are correspondingly formed in the first flange plate and the second flange plate in a manner of corresponding to the ring sealing tapes; and the ring sealing tapes and the ring sealing grooves are in interference fit. By installing the self-adjusting gasket, not only is interference fit realized but also installation is convenient.

The invention relates to a vehicle-mounted millimeter-wave radar PCB (printed circuit board), a base is mounted in a vehicle-mounted millimeter-wave radar shell, the PCB in the vehicle-mounted millimeter-wave radar and the base in the vehicle-mounted millimeter-wave radar shell are fixed through a plurality of rivets, and an open box-shaped shielding part is pre-embedded in the vehicle-mounted millimeter-wave radar shell. According to the vehicle-mounted millimeter wave radar, the shielding piece is buried in the radar shell, so that a large amount of space is saved in the shell, PCB installation is facilitated, meanwhile, the size of the shell can be properly reduced, the PCB fixing structure is completed through the rivets, and the cost is reduced. According to the fixing structure, the mounting hole is prefabricated in the PCB, the PCB positioning head and the rivet body of the rivet are coaxially inserted into the mounting hole, so that the relative positions of the rivet and the PCB are fixed, and then the rivet is tapped into the shell base to realize assembly, so that the fixing structure has relatively high assembly efficiency, the manufacturing process of mounting the PCB is simplified, and the production cost is reduced. And meanwhile, certain flexibility is achieved, and the adaptability of the PCB on the fixing point of the shell base is improved.

The invention discloses a field operation optical cable splice closure and a using method thereof. The field operation optical cable splice closure comprises a housing and a fixing clamp. The two endsof the housing are connected with ends; after an optical cable is spliced, the fixing clamp is clamped at the splicing position of the optical cable; and the splicing position of the optical cable islocated in the housing. The use method comprises the following steps: S1, enabling one optical cable to pass through a wire hole in one end, and enabling the sheath of the optical cable to be in interference fit with the wire hole; S2, enabling the other optical cable to pass through a wire hole in the other end, and enabling the sheath of the optical cable to be in interference fit with the wirehole; S3, enabling the optical cable in the step S1 or the step S2 to pass through the housing, and enabling the housing to sleeve the optical cable; and S4, connecting the two optical cables, placing the connecting positions of the optical cables in the connecting part of the fixing clamp, and clamping the sawtooth-shaped connecting pieces at the connecting positions. The optical cable splice closure has the advantages of being simple in structure and convenient to operate, and the optical cables can be quickly connected by using the using method provided in the invention.

The invention discloses a crankshaft rotor assembly, a compressor and an air conditioner. The air conditioner comprises the compressor, the compressor comprises the crankshaft rotor assembly, the crankshaft rotor assembly comprises a crankshaft, a rotor and a lining, the crankshaft comprises a long shaft section, the upper portion of the long shaft section is a circular truncated cone body, the interior of the lining is in a circular truncated cone shape matched with the circular truncated cone body of the crankshaft, the rotor is provided with a mounting hole, and the lining is arranged outside the crankshaft in a sleeving mode and is in interference fit with the mounting hole of the rotor. The lining is additionally arranged between the crankshaft and the rotor, extrusion of the lining and the circular truncated cone face of the crankshaft is facilitated, the lining is expanded, and therefore tight combination among the crankshaft, the bush and the rotor is achieved. The method can reduce the precision requirements on the outer diameter of the crankshaft and the inner diameter of the mounting hole of the rotor, is easier to process, and has the advantages of high efficiency and low cost.

The invention discloses a connecting piece and a door handle using the same. The connecting piece comprises a limiting part, the limiting part is cylindrical, four ore more stand columns are arranged above the limiting part, the stand columns are arranged in a cylindrical shape, grooves are formed among the stand columns, and a first notch is defined by the grooves; and bending positions are arranged in the middles of the stand columns. After being combined with the door handle, the structure comprises a door body, and a handle part, the connecting pieces and fixing blocks are arranged on the face of the door body; the two ends of the handle part are sleeved with the connecting pieces; and the fixing blocks are fixedly connected with the connecting pieces and the door body. The connecting piece is made of plastic, interference fit between the connecting pieces and a door handle hole is achieved, a simple protective cover in a traditional door handle can be directly replaced, and the door handle has the technical advantages of being convenient to install and detach. In addition, the handle part can adjust different handle types by replacing the lengths of screws, and complex matching of the door handle, the fixing pieces and the door opening position in the production link is avoided.

The invention belongs to an aquaculture device, and particularly relates to an andrias davidianus bait pool. The andrias davidianus bait pool comprises at least one water storage pool, water inlet pipes and water outlet pipes, and a water inlet and a water outlet are formed in each water storage pool, wherein the water outlet is formed in the bottom of the water storage pool, and the water inlet is communicated with the corresponding water inlet pipe. The andrias davidianus bait pool is characterized in that at least one water drainage pool arranged beside the water storage pools is further included, the water drainage pools are communicated with the water outlets capable of allowing fries to pass through, multiple water outlet holes are formed in the side wall of one end of each water outlet pipe, the upper ends of the water outlet pipes stretch out of the water surface, and the outer side walls of the lower ends of the water outlet pipes are attached to the inner side walls of the water outlets; the water storage pools are arranged over adult fish culture pools, the height of the water storage pools is larger than that of the water drainage pools, therefore, the space utilization rate is high, the fries can be conveniently fished, and the multifunctional water outlet pipes are arranged.

The invention discloses a corrugated pipe and a fixing clamp used for installing the corrugated pipe, and relate to the technical field of corrugated pipes. The corrugated pipe comprises a corrugated pipe body, one end of the corrugated pipe body is provided with an insertion port used for being connected with a connector, the outer wall of the corrugated pipe body is provided with a straight line section and a first corrugated section, and the straight line section is located on one side close to the insertion port; and the first corrugated section comprises a first wave crest and a first wave trough, the first wave crest is located on the side close to the straight line section, the straight line section, the first wave crest and the first wave trough are sequentially connected in the axial direction, and the width of the first wave crest, the width of the first wave trough and the difference value between the height of the first wave crest and the height of the first wave trough are all greater than or equal to 2 mm. According to the corrugated pipe and the fixing clamp used for installing the corrugated pipe, the phenomena that the corrugated pipe slides and is compressed in the inserting process of the connector and the corrugated pipe can be avoided.

The invention provides an interference assembling tool for a cylindrical part. The interference assembling tool for the cylindrical part comprises a jack. The jack comprises a cylinder body and a telescopic piston rod. A through hole axially penetrating through the cylinder body and the piston rod is formed in the jack. A guide rod is arranged in the through hole in a penetrating mode. A left blocking piece and a right blocking piece are installed at the two ends of the guide rod respectively. The jack is located between the left blocking piece and the right blocking piece. The cylindrical part is assembled in a component under the pushing force of the piston rod of the jack, and therefore interference assembling of the cylindrical part is achieved, the whole assembling process is conveniently and fast conducted, time-saving and labor-saving, one or two cylindrical parts can also be assembled once, and assembling efficiency is improved. The interference assembling tool for the cylindrical part is suitable for interference assembling of cylindrical parts of all kinds of sizes, and is wider in applicable range.

The invention discloses a constrained ceramic-metal composite bulletproof armor plate and a preparation method thereof. It is composed of a plurality of constrained ceramic-metal composite ballistic-resistant units, and each constrained ceramic-metal composite ballistic-resistant unit includes a metal back plate and a metal constrained plate. and the ceramic block, the metal constraining plate and the ceramic block are arranged on the metal back plate, the ceramic block is arranged inside the metal constraining plate, and are assembled and connected with the metal constraining plate through interference fit. The constrained ceramic-metal composite bulletproof armor plate of the present invention has broad application prospects in various bulletproof occasions such as armed helicopters, armored vehicles, ships and tanks.

The invention discloses a spring fixing structure of a rolling rotor type compressor and the rolling rotor type compressor, and belongs to the technical field of compressors. The spring fixing structure of the rolling rotor type compressor comprises a spring hole, a fixing chamber and a spring, wherein the spring hole is formed in a cylinder body and extends from the outer wall surface into a slip sheet groove used for mounting a slip sheet in the radial direction of a cylinder; the fixing chamber is formed in the cylinder body and structured by a part, close to the outer wall surface of the cylinder, of the spring, wherein the part is enlarged along the spring hole diameter; the spring is provided with a partial pressing part which can be freely telescoped and is arranged in the spring hole and a radially-enlarged fixing part which is connected with the partial pressing part; a partial pressing end of the partial pressing part abuts against the slip sheet; the diameter of the fixing part is larger than that of the spring hole, and the fixing part is supported into the fixing chamber; a part, abutting against the spring, of the fixing chamber, is a plane through which the fixing part of the spring can be stably propped, and thus the spring can be continuously and effectively fixed, and as a result, the sealing between the slip sheet and a roller can be ensured.

The invention discloses a dismounting and mounting method and device of a segmented crankshaft of a marine low speed diesel engine. The device comprises a lower bearing bush fixed tool, a built-in operation platform, a centering tool, a front-and-back crankshaft connecting hydraulic expansion bolt, a crankshaft chain wheel connecting hydraulic expansion bolt, a short stop plate and a long stop plate. The hydraulic expansion bolt is adopted to replace a traditional fitting bolt, and in the mounting process, hydraulic pressure is used for enabling a tapered bushing to be expanded, so that interference fit of the hydraulic expansion bolt and the surface of a connecting hole is achieved, torque transmission is ensured, in the dismounting process, the hydraulic pressure is used for enabling the conical bushing to be restored, the clearance fit between hole shafts is achieved, and the damage to the inner wall of the connecting hole is avoided. According to the device, nondestructively disassembling is achieved, the scrap returning rate is reduced, and the advantages of being easy and convenient to dismount and mount, high in operation efficiency, high in tool generality and long in service life are achieved. The device is suitable for manufacturing and mounting of all large type ship low-speed diesel engines with segmented crankshaft structure.

The present invention relates to the technical field of disposable sanitary products, in particular to a servo conveying mechanism after the baby's pull-up pants are folded in half. wheel, the support frame is strip-shaped and is formed by splicing mounting plates made of rigid materials, the thickness of the mounting plate is 1-3 mm, a plurality of mounting holes are opened on the mounting plate, and the passive guide wheel The thickness of the passive guide wheel is 10-20mm. A round belt in a closed-loop state is stretched on the active guide wheel and each passive guide wheel. The diameter of the round belt is the same as that of the passive guide wheel. The thickness is the same. The utility model solves the phenomenon of inclination and wrinkling of the pull-up pants due to friction during the conveying process of the discontinuous pull-up pants crotch portion due to friction.

The invention relates to a seamless splicing method for a large insert of a die-casting mold. The seamless splicing method comprises the following specific steps that S1, a mounting hole of a mold core and the outer surface of the large insert are cleaned; S2, the large insert after cleaning is finished is put into a cooling tank, liquid nitrogen is introduced into the cooling tank, the large insert is cooled for 4-6 minutes, and the size of the large insert is continuously reduced; and S3, after cooling is finished, the cooled large insert is rapidly taken out and installed in the mounting hole of the mold core, the large insert and the mold core are located at the room temperature, and the size of the large insert is gradually restored to the original size along with temperature rise ofthe large insert. According to the method, the principle of expansion caused by heat and contraction caused by cold is utilized, the size of the large insert is reduced through liquid nitrogen cooling, then the cooled large insert is mounted in the mounting hole, the size of the large insert is restored to the original size along with temperature rise of the large insert, and interference fit between the large insert and the mounting hole is achieved.

The invention relates to the technical field of disposable sanitary products and in particular to a servo conveying mechanism for a folded pull-up of an infant. The servo conveying mechanism comprisesa rack, wherein a transmission assembly, a driving guide wheel, a supporting rack and a plurality of driven guide wheels are arranged on the rack, the supporting rack is strip-type and is formed by splicing mounting plates made from rigid materials, the mounting plates are 1-3 mm thick, a plurality of mounting holes are formed in each mounting plate, the driven guide wheels are arranged on the mounting plates through mounting holes, the driven guide wheels are 10-20 mm thick, round belts in closed loop states are separately arranged on the driving guide wheel and the driven guide wheels, andthe diameters of the round belts are consistent with the thicknesses of the driven guide wheels. The servo conveying mechanism avoids a phenomenon that the pull-up is inclined and wrinkled as a resultof friction in a conveying process of bonding an abandoning paste of a discontinuous crotch of the pull-up.