CN203426247U

CN203426247U - Novel cantilever type piercing die

Info

Publication number: CN203426247U
Application number: CN201320490883.XU
Authority: CN
Inventors: 刘峥霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-13
Filing date: 2013-08-13
Publication date: 2014-02-12
Anticipated expiration: 2023-08-13

Abstract

The utility model discloses a novel cantilever type piercing die, which comprises an upper die base, a lower die base, a die handle, a male die, a female die, a guide bush and a guide pillar, wherein the male die is fixedly connected with the lower part of the upper die base by virtue of a punch-retainer plate; the female die is fixedly connected with the upper surface, opposite to the male die in position, of the lower die base by virtue of an L-shaped die socket; the surface of the die socket is provided with a glass reinforced plastic anti-corrosive layer; the male die is sleeved with a pressure plate; the side wall of the pressure plate is provided with a plurality of strip-type protuberances at intervals; the pressure plate is provided with a pressure screw; the pressure screw is coated with a rubber mat which is made of polyurethane rubber; the male die is externally sleeved with a blank holder; the lower end surface of the blank holder is flush with the lower surface of the pressure plate. The novel cantilever type piercing die has large pressure-plate force, dome bending and wrinkling of a workpiece can be effectively avoided; in addition, the male die is not likely to break, and the service life is long.

Description

Novel cantilever type punching die

Technical field

The utility model belongs to metal manufacture field, is specifically related to a kind of Novel cantilever type punching die.

Background technology

In punching production, usually need to punching on jatharapanvartanasana workpiece (as cylindrical member, box part, large-scale covering etc.) sidewall, generally to use cantilever type punching die, the die of existing cantilever type punching die is horizontally disposed with, the workpiece that need to rush side opening is placed on die, vertical punch moves downward under the drive of forcing press, completes the moulding of side opening.The holding pad of existing cantilever type punching die completes the work of binder and discharging simultaneously, and its pressure-plate-force is little, usually causes workpiece vault to bend up wrinkle, and punch do not protect structure outward, is easy to cause fractureing of punch during punching press.

Summary of the invention

Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of Novel cantilever type punching die is provided, and pressure-plate-force is large, can effectively avoid workpiece vault to bend up wrinkle, punch of the present utility model frangibility not in addition, long service life.

The technical scheme that the utility model adopts is: a kind of Novel cantilever type punching die, comprise upper bolster, die shoe, die shank, punch, die, guide pin bushing and guide pillar, punch is fixedly connected on upper bolster below by punch retainer, die is fixedly connected on by L shaped die socket the position that die shoe upper surface is corresponding with punch, described die socket surface is provided with Corrosion Protection of Fiber Reinforced Plastics layer, on punch, be socketed with holding pad, described holding pad sidewall spacers is provided with some strip bulges, on holding pad, be provided with binder screw, binder screw is coated with rubber blanket, described rubber blanket adopts polyurethane rubber to make, punch is socketed with blank holder outward, the lower surface of blank holder flushes with the lower surface of holding pad.

As preferably, described punch adopts GCr15 steel to make, and punch retainer adopts 45 steel to make, and between punch and upper bolster, is provided with backing plate, and backing plate adopts 45 steel to make.

As preferably, upper bolster and die shoe adopt Q235 steel plate to make, and guide pin bushing and guide pillar adopt 20 steel to make, and in the gap that guide pin bushing coordinates with guide pillar, are provided with ball.

The beneficial effects of the utility model are: the pressure to workpiece when the blank holder being socketed on the utility model punch can increase punching press, prevents that workpiece vault from bending up wrinkle.Blank holder can play a protective role to punch in addition, prevents that punch from fractureing, and has extended the service life of punch.The rubber blanket being socketed on binder screw has further increased pressure-plate-force, polyurethane rubber good springiness, and intensity is high, and the gentle write-downs of wearability pinking is good, long service life.The ball arranging in the gap that guide pin bushing coordinates with guide pillar can improve the guiding accuracy of guide pin bushing and guide pillar, thereby improves precision and the quality of product.Upper bolster and die shoe adopt Q235 steel plate to make, and guide pin bushing and guide pillar adopt 20 steel to make, its good combination property, long service life.Holding pad sidewall spacers is provided with some strip bulges, has improved the strength and stiffness of holding pad, has improved punching precision.Die socket surface is provided with Corrosion Protection of Fiber Reinforced Plastics layer, has improved the antiseptic property of die socket, has extended service life of the present utility model, has good practicality.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1, upper bolster; 2, die shoe; 3, die shank; 4, punch; 5, punch retainer; 6, backing plate; 7, die; 8, guide pin bushing; 9, guide pillar; 10, holding pad; 11, rubber blanket; 12, blank holder; 13, die socket.

The specific embodiment

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

As shown in Figure 1, a kind of Novel cantilever type punching die, comprises upper bolster 1, die shoe 2, die shank 3, punch 4, die 7, guide pin bushing 8 and guide pillar 9, in the present embodiment, as preferably, upper bolster 1 and die shoe 2 adopt Q235 steel plates to make, good combination property, long service life.Guide pin bushing 8 and guide pillar 9 adopt 20 steel to make, and in the gap that guide pin bushing 8 coordinates with guide pillar 9, are provided with ball, have strengthened positioning precision of the present utility model, have improved the precision of product.

Punch 4 is fixedly connected on upper bolster 1 below by punch retainer 5, and in the present embodiment, as preferably, described punch 4 adopts GCr15 steel to make, and hardness and intensity are high, long service life.In the present embodiment, punch 4 is lower little large stairstepping, has increased the intensity of punch 4.Punch retainer 5 adopts 45 steel to make, and between punch 4 and upper bolster 1, is provided with backing plate 6, and backing plate 6 adopts 45 steel to make, and backing plate 6 can slow down the impact of 4 pairs of upper bolsters 1 of punch, extends service life of the present utility model.

Die 7 is fixedly connected on by L shaped die socket 13 position that die shoe 2 upper surfaces are corresponding with punch 4, described die socket 13 surfaces are provided with Corrosion Protection of Fiber Reinforced Plastics layer, improved the antiseptic property of die socket 13, extended service life of the present utility model, on punch 4, be socketed with holding pad 10, described holding pad 10 sidewall spacers are provided with some strip bulges, the strength and stiffness of holding pad 10 have been improved, improved punching precision, on holding pad 10, be provided with binder screw, binder screw is coated with rubber blanket 11, described rubber blanket 11 adopts polyurethane rubber to make, polyurethane rubber good springiness, intensity is high, the gentle write-downs of wearability pinking is good, long service life.Rubber blanket 11 can increase the pressure of 10 pairs of workpiece of holding pad.Punch 4 is outer is socketed with blank holder 12, and the lower surface of blank holder 12 flushes with the lower surface of holding pad 10.Pressure to workpiece when blank holder 12 can increase punching press, prevents that workpiece vault from bending up wrinkle.Blank holder 12 can play a protective role to punch 4 in addition, prevents that punch 4 from fractureing, and has extended the service life of punch 4.

The above, it is only the utility model preferred embodiment, therefore can not limit the scope that the utility model is implemented with this, the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. a Novel cantilever type punching die, comprise upper bolster, die shoe, die shank, punch, die, guide pin bushing and guide pillar, punch is fixedly connected on upper bolster below by punch retainer, die is fixedly connected on by L shaped die socket the position that die shoe upper surface is corresponding with punch, it is characterized in that: described die socket surface is provided with Corrosion Protection of Fiber Reinforced Plastics layer, on punch, be socketed with holding pad, described holding pad sidewall spacers is provided with some strip bulges, on holding pad, be provided with binder screw, binder screw is coated with rubber blanket, described rubber blanket adopts polyurethane rubber to make, punch is socketed with blank holder outward, the lower surface of blank holder flushes with the lower surface of holding pad.

2. Novel cantilever type punching die according to claim 1, is characterized in that: described punch adopts GCr15 steel to make, and punch retainer adopts 45 steel to make, and between punch and upper bolster, is provided with backing plate, and backing plate adopts 45 steel to make.

3. Novel cantilever type punching die according to claim 2, is characterized in that: upper bolster and die shoe adopt Q235 steel plate to make, and guide pin bushing and guide pillar adopt 20 steel to make, and in the gap that guide pin bushing coordinates with guide pillar, are provided with ball.