CN103846493A

CN103846493A - Screw rod shear

Info

Publication number: CN103846493A
Application number: CN201410090205.3A
Authority: CN
Inventors: 曹文龙
Original assignee: Zhangjiagang Tianda Tool Co Ltd
Current assignee: Zhangjiagang Tianda Tool Co Ltd
Priority date: 2014-03-12
Filing date: 2014-03-12
Publication date: 2014-06-11

Abstract

The invention discloses a screw rod shear. A screw rod shorn by the screw rod shear has flat and sloth section. The screw rod shear comprises a base, a fixed cutter fixed on the base, a movable cutter rotationally arranged on the fixed cutter and matched with the fixed cutter, an upper pipe hinged to the base, and a lower pipe fixed on the base; the upper pipe is provided with a waists-shaped hole; a connection plate is connected to one side of the movable cutter and is provided with a guide pin; the guide pin is positioned in the waist-shaped hole in the upper pipe; the fixed cutter is provided with a fixed shearing edge for containing the screw rod; the movable cutter is provided with a movable shearing edge for containing the screw rod and matched with the fixed hearing edge; a support hook is hinged to the base by a torsion spring. The fixed cutter is positioned between the movable cutter and the support hook; the upper pipe is provided with a push block which is capable of pushing the support hook to rotate and can rotate a bending part of the support hook to be the straight line same as that of the movable shearing edge and the fixed shearing edge. The screw rod shear has the advantages that the screw rod is not influenced by the shearing torsion during to rotate during shearing, so the smoothness and flatness of the section of the screw rod are ensured and the attraction and use of the screw rod are improved.

Description

Threaded rod shear

Technical field

The present invention relates to a kind of threaded rod shear.

Background technology

Conventional threaded rod shear, comprise base, be fixed on stationary knife on base, rotate and be arranged on the moving knife that matches on stationary knife and with stationary knife, be hinged on the upper pipe on base and be fixed on the lower pipe on base, on upper pipe, be provided with mounting hole, one side of moving knife is connected with connecting plate, on connecting plate, be provided with guide finger, guide finger is arranged in the mounting hole of pipe, is provided with the sheared edge of determining of holding screw rod on stationary knife, on moving knife, be provided with hold screw rod and with the moving sheared edge of determining sheared edge and matching.This threaded rod shear is when reality is used, because being placed on, determines in sheared edge and moving sheared edge screw rod, in shearing, the torsion that screw rod can be sheared is because determine sheared edge and moving sheared edge in order to adapt to the screw rod of plurality of specifications, conventionally all large than screw diameter, screw rod is easy rotation in the effect that is subject to the resistance of cutting so, after cutting like this, the fracture of screw rod will tilt and out-of-flatness, affects like this attractive in appearance of screw rod and uses.

Summary of the invention

Technical problem to be solved by this invention is: a kind of smooth, smooth threaded rod shear of fracture of shearing rear screw rod is provided.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of threaded rod shear, comprise base, be fixed on the stationary knife on base, rotation is arranged on the moving knife matching on stationary knife and with stationary knife, be hinged on the upper pipe on base and be fixed on the lower pipe on base, on upper pipe, be provided with mounting hole, one side of moving knife is connected with connecting plate, on connecting plate, be provided with guide finger, guide finger is arranged in the mounting hole of pipe, on stationary knife, be provided with the sheared edge of determining of holding screw rod, on moving knife, be provided with hold screw rod and with the moving sheared edge of determining sheared edge and matching, on described base, be hinged with hook by torsion spring, stationary knife is between moving knife and hook, on upper pipe, be provided with and can promote hook rotation and the bend of hook can be turned to and determine sheared edge, the pushing block of moving sheared edge one straight line.

On described hook, be provided with the block offseting with pushing block.

The invention has the beneficial effects as follows: utilize hook that screw rod is fixed, thereby can ensure that screw rod can not be subject to the resistance of cutting affect and rotate in shearing, thereby ensure the smooth, smooth of screw rod fracture, improve the attractive in appearance of screw rod and use.

Brief description of the drawings

Fig. 1 is the front view of threaded rod shear of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the stereogram of Fig. 1 in the time of shear screw.

In figure: 1, base, 2, stationary knife, 3, moving knife, 4, upper pipe, 5, lower pipe, 6, connecting plate, 7, screw rod, 8, determine sheared edge, 9, moving sheared edge, 10, torsion spring, 11, hook, 12, bend, 13, pushing block, 14, block.

Detailed description of the invention

Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail.

As shown in Figure 1, Figure 2, Figure 3 shows, threaded rod shear of the present invention, comprise base 1, be fixed on stationary knife 2 on base 1, rotate and be arranged on the moving knife 3 that matches on stationary knife 2 and with stationary knife 2, be hinged on the upper pipe 4 on base 1 and be fixed on the lower pipe 5 on base 1, on upper pipe 4, be provided with mounting hole (not shown in FIG.), one side of moving knife 3 is connected with connecting plate 6, on connecting plate 6, be provided with guide finger (not shown in FIG.), guide finger is arranged in the mounting hole of pipe 4, like this in pressing pipe 4 downwards, moving knife 3 will rotate, and this is routine techniques.On stationary knife 2, be provided with hold screw rod 7 determine sheared edge 8, on moving knife 3, be provided with hold screw rod 7 and with the moving sheared edge 9 of determining sheared edge 8 and matching, on described base 1, be hinged with hook 11 by torsion spring 10, stationary knife 2, between moving knife 3 and hook 11, is provided with the pushing block 13 that can promote that hook 11 rotates and the bend of hook 11 12 can be turned to and determine sheared edge 8, moving sheared edge 9 one straight lines on upper pipe 4.Promote hook 11 for the ease of pushing block 13 and rotate, on described hook 11, be provided with the block 14 offseting with pushing block 13.

The course of work of the present invention is: as Fig. 1, Fig. 2, shown in Fig. 3, now threaded rod shear is in duty not, first will on upper pipe 4, lift, upper like this pipe 4 passes through mounting hole, guide finger and connecting plate 6 rotate moving knife 3, move sheared edge 9 and determine sheared edge 8 and open, along with the rotation of upper pipe 4, after contacting with block 14 at pushing block 13, just hook 11 is pressed down, until being positioned at, the bend 12 of hook 11 determines sheared edge 8 belows, then screw rod 7 is placed on and determines between sheared edge 8 and moving sheared edge 9, then press down pipe 4, hook 11 rotates backward under the effect of torsion spring, after determining to have put screw rod 7 between sheared edge 8 and moving sheared edge 9, the bend 12 of hook 11 is encountered screw rod 7 in the time rotating backward, and bend 12 catches on screw rod 7, under continuation, press pipe 4, thereby realize, screw rod 7 is sheared, in the process of shearing, owing to there being bend 12 that screw rod is caught on, like this in moving sheared edge 9 with determine in sheared edge 8 shears screw rod 7, screw rod 7 can not rotate under the effect of hook 11, thereby ensure that shearing force is vertical screw 7 all the time, the section of the screw rod 7 after shearing is so exactly smooth, smooth, thereby improve the attractive in appearance of screw rod 7 and reduce moving knife, the service life of stationary knife.

Claims

1. threaded rod shear, comprise base, be fixed on the stationary knife on base, rotation is arranged on the moving knife matching on stationary knife and with stationary knife, be hinged on the upper pipe on base and be fixed on the lower pipe on base, on upper pipe, be provided with mounting hole, one side of moving knife is connected with connecting plate, on connecting plate, be provided with guide finger, guide finger is arranged in the mounting hole of pipe, on stationary knife, be provided with the sheared edge of determining of holding screw rod, on moving knife, be provided with hold screw rod and with the moving sheared edge of determining sheared edge and matching, it is characterized in that: on described base, be hinged with hook by torsion spring, stationary knife is between moving knife and hook, on upper pipe, be provided with and can promote hook rotation and the bend of hook can be turned to and determine sheared edge, the pushing block of moving sheared edge one straight line.

2. threaded rod shear according to claim 1, is characterized in that: on described hook, be provided with the block offseting with pushing block.