CN212760587U

CN212760587U - Fine blanking die for thick plate pawl

Info

Publication number: CN212760587U
Application number: CN202020553918.XU
Authority: CN
Inventors: 潘岱煌; 梁章才
Original assignee: Guangzhou Huaguan Fine Blanking Compoments Co ltd
Current assignee: Guangzhou Huaguan Fine Blanking Compoments Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-03-23
Anticipated expiration: 2030-04-14

Abstract

The utility model belongs to the smart mould field of auto transmission accessory especially relates to smart mould of punching of thick plate pawl, including last mould and bed die, the bed die includes the lower bolster, the die, the backpressure board, drift and lower dowel steel, and lower bolster and die are from up piling up in proper order down, and the backpressure board runs through the die and sets up in the middle part of the die, and the die encircles the blade area that corresponds shaping product hole edge distance and is equipped with the arch, and backpressure board center department is located to the drift, and lower dowel steel runs through the lower bolster and is used for pushing away the backpressure board and release the product in order to realize. According to the scheme, the bulges are arranged on the periphery of the die cutting edge region corresponding to the hole edge distance, so that the material is effectively pushed to the cutting edge, the loss of the material during blanking is compensated, the thick plate in the hole edge distance region of the part is not thinned in the fine blanking process, the thickness dimension is stably controlled within a preset tolerance range, and the qualification rate of the fine blanking finished product of the thick plate pawl is ensured.

Description

Fine blanking die for thick plate pawl

Technical Field

The utility model belongs to the fine blanking mould field of motor transmission accessory especially relates to the fine blanking mould of thick plate pawl.

Background

The fine blanking belongs to the chipless processing technology, and is a fine stamping method developed on the basis of the common stamping technology, which is called fine blanking for short. The punching die can obtain a high-quality punching part which has higher dimensional precision, a smooth punching surface, small warpage and good interchangeability compared with a common punching part in one punching stroke, and can improve the product quality with lower cost.

The forming of many parts on the car all adopts the fine blanking technology production, like ratchet, pawl, regulation pinion rack, single arm-drag, push rod, web, backup pad etc. among them to the thick plate part fine blanking piece, in the fine blanking in-process, because the material flow produces clear corner collapse, further lead to the thickness attenuation of part, especially in the region of hole edge distance (as figure 1), the attenuation warp is more obvious, the result leads to the part thickness inhomogeneous, the part can not satisfy the requirement, even adopted V-arrangement ring gear, still can not this solution problem, need be in preparing thicker raw and material, and after the fine blanking, still need carry out the flat grinding again, not only wasted the material, still increased the processing cost. Therefore, a fine blanking die is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art not enough, the utility model aims to provide a fine blanking mould of thick plate pawl, this scheme sets up the arch through the die blade regional periphery that corresponds at the hole edge distance, effectively pushes the material to the blade inside, and the loss of material when remedying the blanking makes the fine blanking in-process, and the part hole edge distance regional thick plate does not become thin, and thickness dimension stable control is within the tolerance range of predetermineeing, ensures that the thick plate pawl is finely punched off-the-shelf qualification rate.

The purpose of the utility model is realized by adopting the following technical scheme:

fine blanking mould of thick plate pawl, including last mould and bed die, the bed die includes lower bolster, die, back pressure board, drift and lower dowel steel, lower bolster and die are from up piling up in proper order down, the back pressure board runs through the die set up in the die middle part, the die encircles the blade area that corresponds shaping product hole edge distance and is equipped with the arch, the drift is located back pressure board center department, the dowel steel runs through down the lower bolster is used for the top to push the back pressure board is in order to realize releasing the product.

Further, the cross section of the protrusion is rectangular.

Further, a lower backing plate is arranged between the lower template and the female die.

Furthermore, the lower dowel bars are provided with two dowel bars which penetrate through the lower template and the lower base plate, and the two dowel bars are symmetrically arranged.

Furthermore, the lower template is provided with a stepped hole for preventing the lower dowel bar from disengaging, the lower dowel bar is provided with a protruding part corresponding to the stepped hole, and the stepped hole can clamp the protruding part to prevent the lower dowel bar from disengaging.

Further, go up the mould and include cope match-plate pattern, medium plate, pressure flitch, punch-die and go up the dowel steel, press flitch, medium plate and cope match-plate pattern from up piling up in proper order down, the punch-die set up in the lower terminal surface of cope match-plate pattern just runs through medium plate and pressure flitch, go up the dowel steel and run through cope match-plate pattern and medium plate just are used for the top to push away press the flitch.

Furthermore, the fine blanking die of the thick plate pawl is provided with a guide structure for aligning and positioning, the guide structure comprises a guide post fixedly arranged on the pressure plate and a guide channel arranged on the female die, and the guide post is slidably arranged in the guide channel.

Furthermore, the middle plate and the upper die plate are fixedly connected through a discharging screw.

Furthermore, the upper force transmission rods are two and penetrate through the upper template and the middle plate, and the two upper force transmission rods are symmetrically arranged.

Further, the punch is a round punch.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a finish punching die utensil of thick plate pawl, including last mould and bed die, the bed die includes lower bolster, die, backpressure board, drift and lower dowel steel, and lower bolster and die are from up piling up in proper order down, and the backpressure board runs through the die and sets up in the die middle part, and the die is equipped with the arch around the blade region that corresponds shaping product hole edge distance, and backpressure board center department is located to the drift, and lower dowel steel runs through the lower bolster and is used for pushing away the backpressure board in order to realize releasing the product. According to the scheme, the bulges are arranged on the periphery of the die cutting edge region corresponding to the hole edge distance, so that the material is effectively pushed to the cutting edge, the loss of the material during blanking is compensated, the thick plate in the hole edge distance region of the part is not thinned in the fine blanking process, the thickness dimension is stably controlled within a preset tolerance range, and the qualification rate of the fine blanking finished product of the thick plate pawl is ensured.

Drawings

FIG. 1 is a schematic view of a half-section of a thick plate part product;

FIG. 2 is a schematic structural view of a preferred embodiment of a fine blanking die for a thick plate pawl according to the present invention;

fig. 3 is a partial cross-sectional view of K of fig. 2 according to the present invention.

In the figure: 1. fine punching a die of the thick plate pawl; 2. an upper die; 21. mounting a template; 22. a middle plate; 23. a material pressing plate; 24. a male die and a female die; 25. an upper force transmission rod; 26. a discharge screw; 3. a lower die; 31. a lower template; 32. A female die; 33. a counter-pressure plate; 34. a punch; 35. a lower dowel bar; 36. a protrusion; 37. a lower base plate; 41. A guide post; 42. and (4) a guide channel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The utility model discloses fine blanking mould 1 of thick plate pawl is shown in fig. 2-3, including last mould 2 and bed die 3, bed die 3 includes lower bolster 31, die 32, back pressure plate 33, drift 34 and lower dowel steel 35, and lower bolster 31 and die 32 are from up piling up in proper order down, and back pressure plate 33 runs through die 32 and sets up in die 32 middle part, and die 32 encircles the blade region that corresponds shaping product hole edge distance and is equipped with arch 36, and back pressure plate 33 center department is located to drift 34. According to the scheme, the bulges 36 are arranged on the periphery of the cutting edge area of the female die 32 corresponding to the hole edge distance, so that the material is effectively pushed to the inside of the cutting edge, the loss of the material during blanking is compensated, the thick plate in the hole edge distance area of the part is not thinned in the fine blanking process, the thickness dimension is stably controlled within a preset tolerance range, and the qualification rate of the fine blanking finished product of the pawl of the thick plate is ensured. Wherein the cross-section of the protrusion 36 is rectangular.

In this embodiment, a lower backing plate 37 is further disposed between the lower mold plate 31 and the female mold 32. And wherein the punch 34 is a round punch 34.

In this embodiment, after the fine blanking process is completed, the upper die 2 and the lower die 3 move relatively and are away from each other, and at this time, the finished product is formed and nested on the counter-pressure plate 33 and the female die 32, in order to obtain the finished product, a lower dowel bar 35 for pushing the counter-pressure plate 33 is arranged in the scheme, the lower dowel bar 35 penetrates through the lower die plate 31 and the lower bolster 37, and the lower dowel bar 35 is started to move upwards to push out the finished product after the fine blanking is completed.

Preferably, two lower dowel bars 35 penetrate through the lower template 31 and the lower backing plate 37, and the two lower dowel bars 35 are symmetrically arranged. And the lower template 31 is provided with a stepped hole for preventing the lower dowel bar 35 from slipping off, the lower dowel bar 35 is provided with a protruding part corresponding to the stepped hole, and the stepped hole can clamp the protruding part to prevent the lower dowel bar 35 from slipping off.

In this embodiment, the upper die 2 includes an upper die plate 21, a middle plate 22, a pressure plate 23, a punch-die 24, and an upper force lever 25, the pressure plate 23, the middle plate 22, and the upper die plate 21 are stacked in sequence from bottom to top, the punch-die 24 is disposed on the lower end surface of the upper die plate 21 and penetrates through the middle plate 22 and the pressure plate 23, and the upper force lever 25 penetrates through the upper die plate 21 and the middle plate 22 and is used for pushing the pressure plate 23. Wherein the middle plate 22 and the upper template 21 are fixedly connected through a discharging screw 26. The upper die 2 and the lower die 3 are matched, and the plate is placed between the pressure plate 23 and the punch-die 24 as well as the counter-pressure plate 33, the round punch 34 and the die 32 for fine punching of the plate.

Preferably, because the pressure plate 23 and the upper die 2 do not move downward synchronously, the pressure plate 23 will move downward and be extruded on the female die 32 before the fine blanking process, and the pressure bar is provided with another power assembly, in this embodiment, the upper power bar 25 penetrates through the upper die plate 21 and the middle plate 22 and is used for pushing the pressure plate 23 downward. And the number of the upper force transmission rods 25 is two, and the two upper force transmission rods 25 are symmetrically arranged.

In the fine blanking process, the upper force transmission rod 25 pushes the pressure plate 23 downwards to compress the die 32, in order to ensure that the pressure plate 23 and the die 32 do not dislocate when moving relatively, the fine blanking die 1 of the thick plate pawl is provided with a guide structure for aligning and positioning, the guide structure comprises a guide post 41 fixedly arranged on the pressure plate 23 and a guide channel 42 arranged on the die 32, and the guide post 41 is slidably arranged in the guide channel 42. Ensure that this mould can only take place the ascending removal in vertical direction and can not take place the skew in other directions at the in-process of essence towards, guarantee the fashioned qualification rate of finished product. Wherein the guiding structure can be provided in plurality, and the positions of the guiding columns 41 and the guiding channels 42 on the pressure plate 23 and the female die 32 can be changed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. Fine blanking mould of thick plate pawl, its characterized in that: including last mould and bed die, the bed die includes lower bolster, die, back pressure plate, drift and lower dowel steel, lower bolster and die are from up piling up in proper order down, the back pressure plate runs through the die set up in the die middle part, the die encircles the blade area that corresponds shaping product hole edge distance and is equipped with the arch, the drift is located back pressure plate center department, the dowel steel runs through down the lower bolster is used for the top to push away the back pressure plate is in order to realize releasing the product.

2. The fine blanking die for the plank pawl of claim 1, wherein: the cross section of the protrusion is rectangular.

3. The fine blanking die for the plank pawl of claim 1, wherein: and a lower backing plate is also arranged between the lower template and the female die.

4. The fine blanking die for the plank pawl of claim 3, wherein: the lower dowel bars are provided with two dowel bars which penetrate through the lower die plate and the lower base plate, and the two dowel bars are symmetrically arranged.

5. The fine blanking die for the plank pawl of claim 1, wherein: the lower template is provided with a stepped hole for preventing the lower dowel bar from disengaging, the lower dowel bar is provided with a protruding part corresponding to the stepped hole, and the stepped hole can clamp the protruding part to prevent the lower dowel bar from disengaging.

6. The fine blanking die for the plank pawl of claim 1, wherein: go up the mould and include cope match-plate pattern, medium plate, pressure flitch, punch-die and go up the dowel steel, from up piling up in proper order down pressing flitch, medium plate and cope match-plate pattern, punch-die set up in the lower terminal surface of cope match-plate pattern just runs through the medium plate with press the flitch, go up the dowel steel and run through cope match-plate pattern and medium plate just are used for the top to push away press the flitch.

7. The fine blanking die for the plank pawl of claim 6, wherein: the fine blanking die of the thick plate pawl is provided with a guide structure for aligning and positioning, the guide structure comprises a guide post fixedly arranged on the pressure plate and a guide channel arranged on the female die, and the guide post is slidably arranged in the guide channel.

8. The fine blanking die for the plank pawl of claim 6, wherein: the middle plate and the upper die plate are connected and fixed through a discharging screw.

9. The fine blanking die for the plank pawl of claim 6, wherein: the upper force transmission rods are two and penetrate through the upper template and the middle plate, and the two upper force transmission rods are symmetrically arranged.

10. The fine blanking die for the plank pawl of claim 1, wherein: the punch is a round punch.