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Device and method for threaded fixation of metal part and plastic part

A technology for fixed equipment and plastic parts, applied in the field of plastic parts assembly equipment, can solve the problems that are not conducive to mass production and increase manufacturing costs

Inactive Publication Date: 2019-07-05
安徽卓尔电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above scheme, the use of specially processed bolts increases the manufacturing cost and is not conducive to standardized mass production

Method used

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  • Device and method for threaded fixation of metal part and plastic part
  • Device and method for threaded fixation of metal part and plastic part
  • Device and method for threaded fixation of metal part and plastic part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The air pump 1 is connected to the distributor 2, the port 23 of the distributor 2 is connected to the air gun 4 through the hose 3, the distributor 2 includes a main cavity 21, the inner wall of the main cavity 21 is provided with a first impeller group 22, the main cavity 21 The two ends of the side wall are respectively provided with the port 23 communicating with the hose 3 and the interface communicating with the air pump 1. The main cavity 21 is also fixed with a secondary cavity 24, and the secondary cavity 24 is provided with a first impeller. The second impeller group 25 coaxially fixed by the group 22, the auxiliary cavity 24 is filled with non-Newtonian liquid;

[0042] Pass the high-pressure gas with a limited flow rate into the air gun 4, drive the drill bit 43 to rotate, and screw the fixed metal parts and plastic parts. After the bolts are screwed, the gas flow rate inside the air motor 42 decreases sharply, and the speed of the first impeller group 22 dec...

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PUM

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Abstract

The invention discloses a device and method for threaded fixation of a metal part and a plastic part. An air pump communicates with a distributor; a port of the distributor communicates with an air gun via a hose; a first impeller set is disposed on the inner wall of a main cavity; ports communicating to the hose are formed in two ends of the side wall of the main cavity respectively; an assistantcavity is also fixed to the main cavity; a second impeller set which is coaxially fixed to the first impeller set is disposed in the assistant cavity; and the assistant cavity is filled with a non-Newtonian liquid. The embodiment disclosed by the invention has the beneficial effects that force moment limiting during threaded connection can still be realized with common bolts; a high-pressure gaswith a limited flow rate is introduced into the air gun and drives a drill bit to rotate, so the metal part and the plastic part can be fixed in a threaded manner; after the threaded connection with the bolts, the flow rate of the gas in a pneumatic motor decreases sharply, the rotation speed of the first impeller set is reduced and the rotation speed of the second impeller set coaxial with the first impeller set is reduced; and the assistant cavity is filled with the non-Newtonian liquid, so a coefficient of viscosity under a low perturbation state increases and the torque of the drill bit isreduced.

Description

technical field [0001] The invention relates to the field of assembling equipment for plastic parts, in particular to a screw-connecting and fixing device and method for metal parts and plastic parts. Background technique [0002] Plastic parts are composed of macromolecular polymers, with insufficient surface hardness and structural strength, and low heat resistance. The parts formed after assembly with metal parts can realize the complementarity of the two structures. Metal parts are difficult to be compatible with plastic parts, and screw joints are commonly used for assembly. Excessive torque of screw connection will cause damage to the structure of the screw holes of plastic parts. For metal parts such as metal foil, it will also cause damage to metal parts. The traditional method uses a manual screwdriver to fix the bolts, and the assembly efficiency is low. [0003] A patent with the notification number CN102405559B discloses a fixing structure for fixing a metal pla...

Claims

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Application Information

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IPC IPC(8): B29C65/64
CPCB29C65/562B29C65/64B29C66/742B29C66/8242
Inventor 汪昌成汪昌益王永留
Owner 安徽卓尔电器有限公司
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