Mandrel structure of circular saw machine for preferably cutting timber in longitudinal direction

Abstract

The present invention discloses a saw shaft structure of optimized longitudinal cutting circular sawing machine, which comprises a saw shaft and a saw shaft base that is used for supporting the saw shaft. The saw shaft is at least sleeved with a sawblade sliding sleeve which can move along the axial direction and rotate along with the saw shaft. The sawblade sliding sleeve is at least fixedly installed with a movable circular saw blade which is movably connected with a circular saw blade shifting fork. The circular saw blade shifting fork is connected with a screw pair. The saw shaft is at least fixedly installed with a fixed circular saw blade and is at least fixedly installed with a saw shaft driving key. The shaft hole of sawblade sliding sleeve is at least internally provided with a driving key groove that is corresponding with the saw shaft driving key. The saw shaft structure can realize the axial sliding adjustment to the circular saw blade conveniently and flexibly. Longitudinally material cutting can be executed according to an optimal cutting plan. The saw shaft structure also has higher material yielding rate and production efficiency, and is widely used in various multi-blade circular sawing machine.

Description

Technical field [0001] The invention relates to the technical field of wood processing, in particular to wood longitudinal cutting and cutting equipment, in particular to the improvement of the saw shaft structure of a multi-blade circular saw. Background technique [0002] Longitudinal cutting of lumber and other sawn timber is a common process operation in wood processing, and multi-blade circular saws are common process equipment for longitudinal cutting of wood. This type of multi-blade circular saw machine with longitudinal section function is above the feeding chain plate supported on the machine base, and is provided with a pressing mechanism including front and rear feeding pressure rollers. Between the front and rear feeding pressure rollers There is a circular saw blade saw shaft, and the circular saw blade saw shaft is equipped with a plurality of circular saw blades. Each circular saw blade is sleeved on the saw shaft at a fixed interval. When the main motor drives t...

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Problems solved by technology

[0003] Although the saw shaft of this circular saw machine with fixed saw blade spacing has the advantages of high production efficiency, easy control of the board width and easy guarantee of a given board size compared with single saw blade sawing equipment, but this kind of saw blade with fixed saw blade spacing The defects in the saw shaft of the circular saw machine are also obvious

First of all, it is impossible to choose the best sawing plan according to the characteristics of raw materials and sawing requirements with a fixed saw blade interval, but can only "copy" the corresponding board width according to the set saw blade interval, which only depends on the preset With a certain saw blade spacing, it is impossible to avoid defects such as knots or splits in the wood during the sawing process. This fixed sawing size is bound to be far from the best sawing plan, and the best sawing plan The characteristics of the given actual sawn timber should be considered, and the optimal sawing order should be determined according to the optimized mathematical method and reasonable collocation. Therefore, this unoptimizable sawing plan means that more sawing waste will be generated, low yield

Second, even if the existing multi-blade circular saw is connected with the computer control system and computer technology is used to control its production process, this control is only limited to the control of parameters such as sawing speed and sawing thickness, and cannot fully The computer control system used in the sawing machine limits the automation of the circular sawing machine to a greater extent, and at the same time cannot automatically generate sequential axial movement of the circular saw blade according to the optimal plan for sawing raw materials

Third, to adjust the width of sawing boards, it is necessary to remove the circular saw blades on the saw shaft one by one, install the corresponding saw blade spacers, and then install and lock each saw blade; The adjustment process is completely realized by manual operation, which is not only labor-intensive, but also produces more non-productive time, especially the sawing width scheme selected and determined by the operator, which not only depends on the operator's own experience, but also only The boards that can be sawed to a fixed width cannot produce the optimal board width combination. For different raw materials, there will inevitably be a lot of leftovers, resulting in a greater waste of raw material resources.

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