CN218873455U - Punching and shearing die for composite brake shoe back - Google Patents

Abstract

The utility model discloses a punching shear mould of a composite brake shoe back, which comprises an upper mould and a lower mould, wherein the upper mould comprises an upper bottom plate and an upper mould fixing plate, and the lower mould comprises a lower bottom plate and a lower mould fixing plate; a male die fixing plate, a typing upper die sleeve and an upper cutter holder are fixedly arranged in the upper die fixing plate, a punching male die is fixedly arranged in the male die fixing plate, a typing upper die is fixedly arranged in the typing upper die sleeve, and an upper cutter is fixedly arranged on the upper cutter holder; a punching female die, a typing module and a lower cutter are fixedly arranged in the lower die fixing plate, and two limiting seats are fixedly arranged on the lower die fixing plate; two elastic supporting pads are arranged on the lower bottom plate, a material bearing seat is arranged on the two elastic supporting pads, and a stop block fixedly connected with the lower bottom plate is arranged on the front side of the material bearing seat. The utility model discloses can once only accomplish typing, punch a hole, cut the process to carry out continuous processing, have machining efficiency height, mould with low costs, the high advantage of raw and other materials utilization ratio, and improve product quality.

Description

Punching and shearing die for composite brake shoe back

Technical Field

The utility model relates to a punching shear mould, especially be used for the punching shear mould of composite brake shoe tile back.

Background

A composite brake shoe back for the existing railway freight car adopts a strip-shaped plate 41 shown in figure 1, a product 42 shown in figure 2 is obtained by processing, a round hole 43 and two square holes 44 are punched in the middle, and typing 45 is carried out on two ends; at present, a plurality of sets of dies are often adopted to complete workpiece processing, a large plate is firstly cut into small plates, and then punching and typing are respectively carried out, so that the production efficiency is low, the die cost is high, raw materials are greatly lost, a product needs to be positioned for many times during processing, the size precision is difficult to guarantee, and the product quality is influenced.

Disclosure of Invention

The utility model aims at the aforesaid that prior art exists is not enough, provides a punching shear mould of composite brake shoe tile back of body, and it can once only accomplish typing, punch a hole, cut the process to carry out continuous processing, have machining efficiency height, mould with low costs, advantage that raw and other materials utilization is high, and improve product quality.

In order to achieve the purpose, the punching and shearing die for the composite brake shoe back comprises an upper die and a lower die, wherein the upper die comprises an upper bottom plate and an upper die fixing plate which are connected, and the lower die comprises a lower bottom plate and a lower die fixing plate which are connected; the stamping die is characterized in that a male die fixing plate, at least one typing upper die sleeve and an upper cutter seat are fixedly arranged in the upper die fixing plate, the upper cutter seat is positioned at the front sides of the male die fixing plate and all the typing upper die sleeves, more than one punching male die is fixedly arranged in the male die fixing plate, typing upper dies are fixedly arranged in the typing upper die sleeves, and an upper cutter is fixedly arranged on the upper cutter seat; a punching female die, at least one typing module and a lower cutter are fixedly arranged in the lower die fixing plate, the lower cutter is positioned at the front sides of the punching female die and all typing modules, the lower cutter corresponds to the upper cutter and is positioned at the rear side of the upper cutter, the punching female die is provided with a cavity corresponding to each punching male die, each typing module corresponds to each typing upper die, and the lower die fixing plates at two sides of the punching female die are fixedly provided with limiting seats; two elastic supporting pads are arranged on the lower bottom plate on the front side of the lower cutter, a material bearing seat is arranged on the two elastic supporting pads, and a stop block fixedly connected with the lower bottom plate is arranged on the front side of the material bearing seat.

When the device is used, a strip-shaped workpiece is fed onto a lower die fixing plate and a material bearing seat from a feeding end during first-time forming, two limiting seats can realize lateral positioning, an upper die fixing plate drives a male die fixing plate, a typing upper die sleeve and an upper die holder to move downwards, the upper die holder and an upper die push the material bearing seat to move downwards, the upper die and the lower die are matched to cut a stub bar with a certain length, a punching male die is matched with a punching female die, a typing upper die is matched with a typing lower die block, typing and punching are finished on the workpiece on the rear side of the stub bar, the workpiece moves forwards during each forming, the front end of the workpiece is positioned through a stop block, and the upper die and the lower die are matched to cut the workpiece which is formed last time, so that a product is obtained; meanwhile, the workpiece on the rear side of the lower cutter completes typing and punching, and the continuous feeding is carried out, so that the strip-shaped workpiece can complete punching, typing and shearing through a set of die and can be continuously produced, and the continuous feeding device has the advantages of high processing efficiency and low die cost, has the same positioning reference in the working procedure and high positioning precision, can ensure the dimensional precision, improves the processing quality, and has high utilization rate of raw materials due to the fact that a stub bar is generated only during the first forming;

as a further improvement of the utility model, more than two groups of longitudinal through holes are arranged in the upper base plate and the upper die fixing plate, the inner diameter of the through hole of the upper die fixing plate is smaller than that of the through hole of the upper base plate, a hanging rod is arranged in each group of through holes in a sliding manner, the upper end of the hanging rod is provided with a limit step arranged in the through hole of the upper base plate, reset springs are arranged in the through holes above the limit step, the lower end of the hanging rod passes through the upper die fixing plate and is fixedly connected with the same stripper plate, and rubber sleeves are sleeved outside each hanging rod between the upper die fixing plate and the stripper plate; the stripper plate is provided with through holes corresponding to the punching male dies; during forming, the return spring pushes the stripper plate to tightly press the workpiece through the hanger rod, so that the forming is facilitated, after forming, the stripper plate is pushed down by the rubber sleeve to remove the workpiece from the punching male die, the material is prevented from being carried, the forming quality can be improved, and continuous processing is realized;

as a further improvement of the utility model, a feeding wheel is arranged at the feeding end of the lower die fixing plate and is higher than the lower die fixing plate; workpieces are fed into the upper die fixing plate and the material bearing seat from the lower part of the feeding wheel, so that the automation and the continuity of feeding can be realized;

as a further improvement of the utility model, a lower die holder is arranged between the lower bottom plate and the lower die fixing plate, and blanking holes are arranged in the lower die holder and the lower bottom plate below the cavity; the height of the lower die fixing plate can be adjusted and the punched stub bar can be discharged

As a further improvement of the utility model, a groove is arranged in the middle of the material bearing seat; the lower bottom plates on two sides of the material bearing seat are respectively and fixedly provided with at least one material guide seat, one material guide seat on each side is provided with a sliding chute, a top pin is arranged in each sliding chute, the middle part of each top pin is provided with a step, the outer side of each material guide seat is fixedly connected with a baffle, and a compression spring is sleeved outside each top pin between each step and each baffle; the product can be positioned by the material guide seat and fixed by the ejector pin, so that the manipulator can conveniently extend into the groove to grab the product;

as a further improvement of the utility model, one side of the limiting seat adjacent to the punching female die is provided with a longitudinal roller pin; the workpiece and the roller pin form rolling friction in the feeding process, so that feeding is facilitated and the appearance is protected;

as a further improvement of the utility model, a typehead pad is arranged in each typewriting upper die sleeve above the typewriting upper die, and each typewriting upper die sleeve is provided with a set screw for fastening the typewriting upper die; the hardness of the word head cushion is high, so that the word head cushion can bear high impact force during typing and protect a die;

as a further improvement of the utility model, a pressing block is fixedly connected on the upper die fixing plate above the material bearing seat; during shearing, the pressing block can assist in positioning the product;

as a further improvement of the utility model, the stop block is connected with an adjusting screw; the positioning reference of the workpiece in the feeding direction can be adjusted, and the device is suitable for different products;

to sum up, the utility model discloses can once only accomplish type, punch a hole, cut the process to carry out continuous processing, have machining efficiency height, mould with low costs, the high advantage of raw and other materials utilization ratio, and improve product quality.

Drawings

FIG. 1 is a front view of a strip of material for forming a composite brake shoe backing.

Fig. 2 is a front view of the die-cut product.

Fig. 3 is a front view of the embodiment of the present invention.

Fig. 4 is a top view of the lower die of fig. 3.

Fig. 5 is a partial sectional view of the upper die fixing plate, the typing upper die sleeve and the typing upper die in fig. 3 in another direction.

Fig. 6 is an enlarged view of fig. 4 at a.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 3 to 6, the punching and shearing die for the composite brake shoe back of the embodiment comprises an upper die and a lower die, wherein the upper die comprises an upper base plate 1 and an upper die fixing plate 2 which are connected through bolts, a punch fixing plate 3, two typing upper die sleeves 4 and an upper punch holder 5 are fixedly arranged in the upper die fixing plate 2, the punch fixing plate 3 and the upper die fixing plate 2 are fixedly connected through bolts, the typing upper die sleeves 4 and the upper punch holder 5 are fixedly connected with the upper die fixing plate 2 through matched limit steps and stepped holes, the two typing upper die sleeves 4 are arranged at two sides of the punch fixing plate 3, the upper punch holder 5 is arranged at the front sides of the punch fixing plate 3 and the two typing upper die sleeves 4, a punching punch 6 and two square hole punches 7 are fixedly arranged in the punch fixing plate 3 through matched limit steps and stepped holes, the two square hole punches 7 are arranged at two sides of the circular hole punching punch 6, a word head pad 8 and an upper die 9 are arranged in the typing upper die sleeve 4 from top to bottom, and the typing upper die sleeve 4 is provided with a fastening screw 10 for fastening the typing upper die 9; two groups of longitudinal through holes which are connected are arranged in the upper base plate 1 and the upper die fixing plate 2, the inner diameter of the through hole of the upper die fixing plate 2 is smaller than that of the through hole 11 of the upper base plate 1, a hanging rod 12 is arranged in each group of through holes in a sliding manner, a limiting step arranged in the through hole 11 of the upper base plate is arranged at the upper end of the hanging rod 12, a return spring 13 is arranged in the through hole 11 above the limiting step, the lower ends of the two hanging rods 12 penetrate through the upper die fixing plate 2 and are fixedly connected with the same stripper plate 14 through screws, and a rubber sleeve 15 is sleeved outside each hanging rod 12 between the upper die fixing plate 2 and the stripper plate 14; the stripper plate 15 is provided with through holes corresponding to the round hole punching male die 6 and the two square hole punching male dies 7; the upper cutter holder 15 is fixedly provided with an upper cutter 16 through a screw;

the lower die comprises a lower bottom plate 17, a lower die base 18 and a lower die fixing plate 19 which are connected, a feeding wheel 20 is arranged at the feeding end of the lower die fixing plate 19, and the feeding wheel 20 is higher than the lower die fixing plate 19; a punching female die 21, two typing modules 22 and a lower cutter 23 are fixedly arranged in the lower die fixing plate 19, the punching female die 21 and the two typing modules 22 are both arranged in a groove of the lower die fixing plate 19, the lower cutter 23 is fixed through two bolts, the punching female die 21 is provided with three cavities corresponding to the circular hole punching male die 6 and the two square hole punching male dies 7, and blanking holes 26 are respectively arranged in the lower die base 18 and the lower bottom plate 17 below the three cavities; each typing module 22 corresponds to each typing upper die 9, the lower cutter 23 is positioned at the front side of the punching female die 21 and the two typing lower modules 22, the lower cutter 23 corresponds to the upper cutter 16 and is positioned at the rear side of the punching female die, the lower die fixing plates 19 at two sides of the punching female die 21 are fixedly provided with limiting seats 24, and one side of each limiting seat 24, which is adjacent to the punching female die 21, is provided with a longitudinal roller pin 25; two elastic supporting pads 27 are arranged on the lower bottom plate 17 at the front side of the lower cutter 23, a material bearing seat 28 is arranged on the two elastic supporting pads 27, a stop block 29 fixedly connected with the lower bottom plate 17 is arranged at the front side of the material bearing seat 28, and an adjusting screw 30 is connected on the stop block 29; the middle part of the material bearing seat 28 is provided with a groove 31; two guide seats 32 are fixedly arranged on the lower bottom plate 17 at two sides of the material bearing seat 28, a chute is arranged on one guide seat 32 at each side, a top pin 33 is arranged in each chute, a step is arranged in the middle of each top pin 33, a baffle 34 is fixedly connected to the outer side of each guide seat 32, and a compression spring 35 is sleeved outside each top pin 33 between each step and the corresponding baffle 34; a pressing block 36 is fixedly connected to the upper die fixing plate above the material bearing seat 28.

When in use, the upper base plate 1 is connected with a slide block 37 of a punch press, the return spring 13 is extruded by the slide block 37, and the lower base plate 17 is arranged on a workbench 38; the character head pad 8 and the typing module 22 both adopt high-hardness steel to bear large impact force during typing, so that deformation is avoided, and a die is protected; during the first forming, a strip-shaped workpiece 39 is sent to the lower die fixing plate 19 and the material bearing seat 28 from a feeding end, the rolling needles 25 in the two limiting seats 24 can realize lateral positioning, the upper die fixing plate 2 drives the punch fixing plate 3, the typing upper die sleeve 4 and the upper die holder 5 to move downwards, the upper die holder 5 and the upper die 16 push the material bearing seat 28 to overcome the resistance of the elastic supporting pad 27 to move downwards, the upper die 16 and the lower die 23 are matched to cut off a certain length of stub bar, meanwhile, the round hole punching male die 6 and the two square hole punching male dies 7 are matched with three cavities of the punching female die 21, the typing upper die 9 is matched with the typing lower die 22 to complete typing and punching on the workpiece 39 on the rear side of the stub bar, the workpiece 39 moves forwards during each forming, the front end of the workpiece is positioned through the upper adjusting screw 30 on the stop block 29, and the upper die 16 and the lower die 23 are matched to cut off the workpiece formed last time to obtain a product; meanwhile, the workpieces on the rear side of the lower cutter 23 are typed and punched, and thus, the strip-shaped workpieces 39 can be punched, typed and cut through a set of die and can be continuously produced, so that the method has the advantages of high processing efficiency and low die cost, and the positioning reference in the process is the same, the positioning precision is high, the dimensional precision can be ensured, the processing quality is improved, and the utilization rate of raw materials is high because the stub bar is generated only during the first forming;

during forming, the return spring 13 pushes the stripper plate 14 to tightly press a workpiece through the hanger rod 12, so that forming is facilitated, after forming, the upper die fixing plate 2 returns, the stripper plate 14 is pushed down by the rubber sleeve 15, the workpiece is withdrawn from the circular hole punching male die 6 and the two square hole punching male dies 7, material carrying is prevented, forming quality can be improved, and continuous processing is realized;

the workpiece is fed into the upper die fixing plate 2 and the material bearing seat 28 from the lower part of the feeding wheel 20, so that the jumping is prevented, and the automation and the continuity of feeding are convenient to realize; the product can be positioned by the material guide seat 32 and fixed by the ejector pin 33, so that the manipulator can conveniently extend into the groove 31 to grab the product; the workpiece and the roller pin 25 form rolling friction in the feeding process, so that feeding is facilitated and the appearance is protected; during shearing, the pressing block 36 can assist in positioning the product; the adjusting screw 30 can adjust the positioning reference of the workpiece in the feeding direction, and is suitable for different products;

the embodiment is not limited to the above embodiments, and for example, the number and shape of the cavities in the punching male die and the punching female die in the male die holder can be adjusted, and they all belong to the protection scope of this patent.

Claims (9)

1. A punching shear mould of a composite brake shoe back comprises an upper mould and a lower mould, wherein the upper mould comprises an upper bottom plate and an upper mould fixing plate which are connected, and the lower mould comprises a lower bottom plate and a lower mould fixing plate which are connected; the stamping die is characterized in that a male die fixing plate, at least one typing upper die sleeve and an upper cutter seat are fixedly arranged in the upper die fixing plate, the upper cutter seat is positioned at the front sides of the male die fixing plate and all the typing upper die sleeves, more than one punching male die is fixedly arranged in the male die fixing plate, typing upper dies are fixedly arranged in the typing upper die sleeves, and an upper cutter is fixedly arranged on the upper cutter seat; a punching female die, at least one typing module and a lower cutter are fixedly arranged in the lower die fixing plate, the lower cutter is positioned at the front sides of the punching female die and all typing modules, the lower cutter corresponds to the upper cutter and is positioned at the rear side of the upper cutter, the punching female die is provided with a cavity corresponding to each punching male die, each typing module corresponds to each typing upper die, and the lower die fixing plates at two sides of the punching female die are fixedly provided with limiting seats; two elastic supporting pads are arranged on the lower bottom plate on the front side of the lower cutter, a material bearing seat is arranged on the two elastic supporting pads, and a stop block fixedly connected with the lower bottom plate is arranged on the front side of the material bearing seat.

2. The punching and shearing die for the shoe back of the composite brake shoe as claimed in claim 1, wherein more than two groups of connected longitudinal through holes are arranged in the upper base plate and the upper die fixing plate, the inner diameter of the through hole of the upper die fixing plate is smaller than that of the through hole of the upper base plate, a hanging rod is arranged in each group of through holes in a sliding manner, the upper end of the hanging rod is provided with a limiting step arranged in the through hole of the upper base plate, a reset spring is arranged in each through hole above the limiting step, the lower end of the hanging rod passes through the upper die fixing plate and is fixedly connected with the same stripper plate, and a rubber sleeve is sleeved outside each hanging rod between the upper die fixing plate and the stripper plate; the stripper plate is provided with through holes corresponding to the punching male dies.

3. The die set for punching and shearing a composite brake shoe back according to claim 1 or 2, wherein the feeding end of the lower die fixing plate is provided with a feeding wheel, and the feeding wheel is higher than the lower die fixing plate.

4. The punching and shearing die for the back of a composite brake shoe as claimed in claim 3, wherein a lower die holder is arranged between the lower base plate and the lower die fixing plate, and blanking holes are formed in the lower die holder and the lower base plate below the die cavity.

5. The punching and shearing die for the back of a composite brake shoe as claimed in claim 4, wherein the middle part of the material bearing seat is provided with a groove; at least one guide seat is fixedly arranged on the lower bottom plates on two sides of the material bearing seat, a sliding groove is formed in each guide seat, a top pin is arranged in each sliding groove, a step is arranged in the middle of each top pin, a baffle is fixedly connected to the outer side of each guide seat, and a compression spring is sleeved outside each top pin between each step and the corresponding baffle.

6. The die set for punching and shearing a composite brake shoe back according to claim 5, wherein the side of the retainer adjacent to the punching die is provided with a longitudinal roller.

7. The punching and shearing die for the tile back of the composite brake shoe as claimed in claim 6, wherein the typing upper die sleeves above the typing upper dies are all provided with a head pad, and the typing upper die sleeves are all provided with set screws for fastening the typing upper dies.

8. The punching and shearing die for the back of composite brake shoe as defined in claim 7, wherein the upper die fixing plate above the material bearing seat is fixedly connected with a pressing block.

9. The die for shearing and punching composite brake shoe back according to claim 8, wherein said stop is associated with an adjustment screw.

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