CN203471429U - Clamping mechanism of metal band sawing machine - Google Patents

Abstract

The utility model discloses a clamping mechanism of a metal band sawing machine. The clamping mechanism comprises a clamping cylinder, a rack, a clamping claw, a machine body, a guide rail plate, a movable jaw and a fixed jaw. Teeth of the rack are inverted trapezoids, and tooth sockets are straight trapezoids. The clamping claw is a straight trapezoid, and a right angle is formed at a joint of the clamping claw and a claw body. Under the condition that an original overall structure is generally sustained, a mounting mold and an operation method are unchanged. Clamping force that the rack and the clamping claw can bear is increased, and service lives of the rack and the clamping claw are prolonged.

Description

The clamp mechanism of band saw machine

Technical field

The utility model relates to a kind of clamp mechanism of band saw machine, relates in particular to a kind of mechanism by hydraulic clamp oil cylinder band carry-over bar clamping work pieces.

Background technology

The general piston rod of the clamping cylinder that is fixed on lathe bed left end that adopts of clamp mechanism of metal band saw working table is connected with tooth bar 2, then by piston rod, stretch out promote tooth bar 2, the related movable clamp port of claw 3 moves to determining jaw direction the clamping that realizes workpiece along guide-rail plate, 5 is that guide-rail plate, 6 is lathe bed, as depicted in figs. 1 and 2.But because traditional tooth bar 2 is trapezoid teeth 10, the front end of claw 3 be and trapezoid teeth 10 between the trapezoidal pawl 8 of very narrow inversion that matches of the trapezoidal teeth groove of inversion 11 bottoms, and claw 3 is arc transition with the junction, inner side 9 of tooth bar 2, this structure is when tooth bar 2 promotes claw 3, claw 3 is firm with tooth bar 2 combinations, but when tooth bar 2 is oppositely retracted, claw 3 is deviate from from the trapezoidal teeth groove 11 of inversion of tooth bar 2, cause completing after sawing task at band sawing machine, need to unclamp moving, determine jaw 4, during 7 further feeding, movable clamp port can not unclamp with the retraction of the piston rod of clamping cylinder 1, can only rely on natural relaxation, so the movable clamp port amount of unclamping is smaller and often there will be movable clamp port stuck phenomenon, need people for prying open further feeding, affect the operating efficiency of band sawing machine.

Summary of the invention

The purpose of this utility model solves the above-mentioned problems in the prior art exactly, a kind of clamp mechanism of band saw machine is provided, it makes the impregnable while of the former clamping function of band sawing machine, and the piston rod that movable clamp port can be followed hydraulic cylinder after completing sawing task is retracted and to be realized unclamping of jaw.

For achieving the above object, technical solution of the present utility model is: a kind of clamp mechanism of band saw machine, and it comprises clamping cylinder, tooth bar, claw, lathe bed, guide-rail plate, movable clamp port and determines jaw; It is characterized in that: the teeth of tooth bar are trapezoidal for being inverted, and teeth groove is trapezoid; The tooth root width of teeth is constant, and its tooth top is widened; The pawl of claw is trapezoid, and the junction, inner side of itself and pawl body is right angle, increases the thickness of the pawl 14 of claw 13 simultaneously.

The utility model changes the trapezoid teeth of original tooth bar to be inverted trapezoidal teeth into, change the pawl of claw into trapezoid, and with the junction, inner side of pawl body be right angle, thereby realize the two-way connection of tooth bar and claw, when clamping cylinder piston rod stretches out forward, by tooth bar, promote the related movable clamp port of claw and realize the clamping to workpiece, when piston rod is retracted, by tooth bar, pull claw to drive movable clamp port to realize release function.So the utility model has been realized under the prerequisite that keeps former clamping function, after completing sawing task, movable clamp port can be unclamped by hydraulic cylinder piston rod traction, keeps original general structure substantially identical simultaneously, and mounting means and method of operating are constant, satisfactory for result.And the utility model has increased the clamping force that tooth bar, claw can bear, extended the service life of tooth bar and claw.

Accompanying drawing explanation

Fig. 1 is clamping mechanism structural representation in prior art;

Fig. 2 is the integrated structure schematic diagram of prior art middle rack and claw;

Fig. 3 is the structural representation of clamping mechanism of the present utility model;

Fig. 4 is the integrated structure schematic diagram of the utility model middle rack and claw.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

As shown in Figure 3 and Figure 4, the present embodiment comprises clamping cylinder 1, tooth bar 12, claw 13, movable clamp port 4, guide-rail plate 5, lathe bed 6 and determines jaw 7.The teeth 17 of tooth bar 12 are trapezoidal for being inverted, and teeth groove 18 is trapezoid.Tooth root 19 width of teeth 17 are constant, and its tooth top 20 is widened.The pawl 14 of claw 13 is trapezoid, and the 15Wei right angle, junction, inner side of itself and pawl body 16 increases the thickness of the pawl 14 of claw 13 simultaneously.

Claims (1)

1. a clamp mechanism for band saw machine, it comprises clamping cylinder, tooth bar, claw, lathe bed, guide-rail plate, movable clamp port and determines jaw; It is characterized in that: the teeth of tooth bar are trapezoidal for being inverted, and teeth groove is trapezoid; The pawl of claw is trapezoid, and the junction, inner side of itself and pawl body is right angle.

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