CN216324504U - Punching die - Google Patents

Abstract

The utility model provides a punching die, which comprises: a lower die table; the upper die table is arranged below the lower die table and can move up and down relative to the lower die table; the punch component is arranged on the upper die table and comprises a punch fixing plate, a punch and a pressing plate, wherein the punch fixing plate is arranged on the lower surface of the upper die table, the punch is arranged on the punch fixing plate from bottom to top, the pressing plate is arranged on the lower surface of the punch fixing plate, and the pressing plate is suitable for pressing the punch on the punch fixing plate. When the punch is replaced, only the pressing plate needs to be disassembled, and the whole set of die does not need to be disassembled, so that the replacement step of the punch is greatly simplified; in addition, the problem that the T-shaped structure is broken due to drawing under stress because the T-shaped structure is frequently unloaded by stamping is solved. Therefore, the technical scheme of the utility model overcomes the defects of complicated punch replacing steps and low replacing efficiency of the punching die in the prior art.

Description

Punching die

Technical Field

The utility model relates to the technical field of crawler production equipment, in particular to a punching die.

Background

The creeper tread is an important part of a chassis of engineering machinery such as a crawler hydraulic excavator, a bulldozer, a crawler crane, a paver and the like. The track shoe can be divided into a steel track shoe and a rubber track shoe from manufacturing materials. The steel creeper tread is mostly used on equipment with larger tonnage and high requirement on wear resistance, while the rubber creeper tread is mostly used on equipment with small tonnage.

The steel creeper tread usually adopts section steel as raw materials, and the processing technological process generally comprises the following steps: blanking the section, forming holes, carrying out heat treatment and spraying paint. The processing of holes is generally divided into two types, namely drilling and punching, the drilling efficiency is low, and the cost is high, so the track shoe is generally punched on a punching device by using a die. However, the bottom of the die punch in the prior art is T-shaped, the punch is hung and buckled on the punch fixing plate, when the punch is replaced, the whole set of die needs to be detached from the stamping equipment, the die is broken up, and after the upper die plate is detached, a new punch is replaced, so that the operation is very inconvenient, and the replacement efficiency is low. In addition, the T-shaped structure is frequently unloaded due to stamping and is easy to be stressed and broken in a drawing mode.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects of complicated punch replacing steps and low replacing efficiency of the punching die in the prior art, thereby providing the punching die.

In order to solve the above problems, the present invention provides a punching die including: a lower die table; an upper die table, wherein an upper base plate is arranged on the upper die table; the punch component is arranged on the upper base plate and comprises a punch fixing plate, a punch and a pressing plate, wherein the punch fixing plate is arranged on the upper base plate, the punch is arranged on the punch fixing plate from bottom to top, and the pressing plate is sleeved on the punch and arranged on the punch fixing plate.

Optionally, the punch comprises a large-diameter section, a small-diameter section and a step surface connecting the large-diameter section and the small-diameter section, a first mounting hole is formed in the punch fixing plate, the large-diameter section is mounted in the first mounting hole, a second mounting hole is formed in the pressing plate, the small-diameter section is mounted in the second mounting hole, and the pressing plate is abutted to the step surface.

Optionally, the pressure plate is fixed to the punch retainer plate by a first fastener.

Optionally, the punch is multiple, and the multiple punches are different in length.

Optionally, the punch fixing plate is fixed on the upper backing plate through a third fastener

Optionally, the punching die further comprises a female die assembly, the female die assembly is arranged on the lower die table, the female die assembly comprises a female die plate and an insert, a receiving recess is formed in the female die plate, the insert is arranged in the receiving recess, the insert and the receiving recess are in clearance fit, a punching sleeve is arranged on the insert, and the punching sleeve is suitable for being matched with the punch.

Optionally, the die assembly further comprises a pressing block, the pressing block is matched with the insert, and the pressing block is suitable for fixing the insert.

Optionally, the compression block and the insert are in abutting fit through a bevel.

Optionally, the compression block is attached to the cavity plate by a second fastener.

Optionally, a guide structure is arranged between the upper die table and the lower die table.

Optionally, the punching die further comprises a stripper plate, the stripper plate is arranged between the upper die table and the lower die table, and elastic ejection structures are arranged on two sides of the stripper plate.

The utility model has the following advantages:

by utilizing the technical scheme of the utility model, when the punch is replaced, the upper die table is moved upwards, then the press plate is detached from the punch fixing plate, and at the moment, the punch can be detached from the punch fixing plate. And when a new punch is installed, the steps are operated in the reverse direction. When the punch is replaced, the structure only needs to disassemble the pressing plate without disassembling the whole set of die, so that the replacement step of the punch is greatly simplified. Therefore, the technical scheme of the utility model overcomes the defects of complicated punch replacing steps and low replacing efficiency of the punching die in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows a schematic view of the structure of the punch die of the present invention;

FIG. 2 shows a schematic view of the punch of the punching die of FIG. 1; and

figure 3 shows a schematic top view of the female die assembly of the punch die of figure 1.

Description of reference numerals:

10. a lower die table; 20. feeding a die table; 30. a punch assembly; 31. a punch fixing plate; 32. a punch; 321. a large diameter section; 322. a small diameter section; 33. pressing a plate; 40. a female die assembly; 41. a cavity plate; 42. an insert; 43. punching a sleeve; 44. a compression block; 45. a second fastener; 50. a guide structure; 60. a stripper plate; 70. an elastic ejection structure; 80. and (4) an upper cushion plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the punching die of the present embodiment includes a lower die table 10, an upper die table 20, and a punch assembly 30. Wherein, an upper backing plate 80 is provided on the upper die table, the upper die table 20 is provided below the lower die table 10, and the upper die table 20 can move up and down relative to the lower die table 10. The punch assembly 30 is disposed on the upper backing plate 80, and the punch assembly 30 includes a punch fixing plate 31, a punch 32, and a pressing plate 33. Further, a punch fixing plate 31 is disposed on the lower surface of the upper backing plate 80, the punch 32 is mounted on the punch fixing plate 31 from bottom to top, a pressing plate 33 is sleeved on the punch 32 and disposed on the lower surface of the punch fixing plate 31, and the pressing plate 33 is adapted to press the punch 32 against the punch fixing plate 31.

With the technical solution of the present embodiment, when the punch 32 is replaced, the upper die table 20 is moved upward, and then the pressing plate 33 is detached from the punch fixing plate 31, at this time, the punch 32 can be detached from the punch fixing plate 31. When a new punch 32 is installed, the above steps are reversed. When the punch 32 is replaced, the structure only needs to disassemble the pressing plate 33, and the whole die does not need to be disassembled, so that the punch replacing step is greatly simplified. Therefore, the technical scheme of the embodiment overcomes the defects that the punch of the punching die in the prior art is complicated in replacement step and low in replacement efficiency.

As shown in fig. 1, in the present embodiment, the punch 32 includes a large-diameter section 321, a small-diameter section 322, and a step surface connecting the large-diameter section 321 and the small-diameter section 322. The punch fixing plate 31 is provided with a first mounting hole, the large-diameter section 321 is mounted in the first mounting hole, the pressing plate 33 is provided with a second mounting hole, the small-diameter section 322 is mounted in the second mounting hole, and the pressing plate 33 is abutted against a step surface formed by the large-diameter section 321 and the small-diameter section 322.

Specifically, the punch 32 has a stepped structure, and the diameter of the upper portion thereof is larger than that of the lower portion thereof. That is, the upper portion of the punch 32 forms the large-diameter section 321, and the lower portion of the punch 32 forms the small-diameter section 322. A step surface is formed between the large-diameter section 321 and the small-diameter section 322. Further, the diameter of the first mounting hole is adapted to the diameter of the large diameter section 321, and the first mounting hole is provided on the lower end surface of the punch fixing plate 31. The punch 32 can be inserted into the punch holder plate 31 from below to above. The diameter of the second mounting hole is smaller than that of the first mounting hole, and the second mounting hole is matched with the diameter of the small-diameter section 322, so that when the pressing plate 33 is mounted on the punch fixing plate 31, the pressing plate 33 can abut against the stepped surface of the punch 32, the pressing plate 33 is fixed on the punch fixing plate 31 through a third fastener, and the punch 32 is pressed on the punch fixing plate 31.

As shown in fig. 1, in the solution of the present embodiment, the pressing plate 33 is fixed to the punch fixing plate 31 by a first fastening member. Specifically, the first fastening members are bolts, so that the pressing plate 33 can be conveniently mounted and dismounted.

Of course, the first fastening member may be a conventional connecting and fastening structure such as a snap.

Preferably, in the technical solution of the present embodiment, there are a plurality of punches 32, and the lengths of the plurality of punches 32 are different. Specifically, the plurality of punches 32 having different lengths can realize a stepped punching process, thereby reducing vibration to the die at the time of punching and improving the service life of the punches 32. Specifically, the track shoe is generally divided into four holes and eight holes according to the requirement. The punches 32 are arranged to have the same length at opposite corners of the four-hole track shoe according to the thickness of the shoe portion of the track shoe, and the heights of the other two corners are lower than the lengths of the other two punches 32. In the eight-hole track shoe, the four-hole punches 32 in the middle may be provided with the same length, and the heights of the other four-hole punches 32 may be reduced according to the plate thickness.

Of course, the specific number and arrangement of the plurality of punches 32, and the specific length of each punch 32 can be set by those skilled in the art according to the actual working requirement.

In the solution of the present embodiment, the punch fixing plate 31 is fixed on the upper backing plate 80 by a fastener.

As shown in fig. 1 and 3, in the solution of the present embodiment, the punching die further comprises a female die assembly 40. A die assembly 40 is provided on the lower die table 10, the die assembly 40 including a die plate 41 and an insert 42. Specifically, the cavity plate 41 is provided with a receiving recess, the insert 42 is arranged in the receiving recess, the insert 42 and the receiving recess are in clearance fit, the insert 42 is provided with a punch sleeve 43, and the punch sleeve 43 is suitable for being matched with the punch 32.

In the above structure, the insert 42 can be adjusted in position along the horizontal plane (i.e., the X-Y direction) in the receiving recess, so that the punch sleeve 43 can be finely adjusted according to the clamping conditions of the upper and lower dies, and the clamping accuracy between the punch sleeve 43 and the punch 32 is ensured. Meanwhile, the die board 41, the insert 42 and the punching sleeve 43 are of a split structure, and the problem of punching deflection caused by die staggering of the die can be solved by adjusting the position of the insert 42. Meanwhile, the split structure makes it very convenient to replace the wearing parts in the female die assembly 40.

Further, the specific position of the insert 42 in the receiving recess can be adjusted by a mechanism such as a washer, an adjusting nut, etc.

Preferably, the adjustment margin between the insert 42 and the side wall of the receiving recess is in the range of 0.5-1 mm.

As shown in fig. 3, in the solution of the present embodiment, the die assembly 40 further includes a pressing block 44, the pressing block 44 is matched with the insert 42, and the pressing block 44 is adapted to fix the insert 42. In particular, the hold down 44 serves to fix the relative position of the insert 42 within the receiving recess. The hold down 44 is a front abutment fit with the insert 42.

Preferably, the compression block 44 and insert 42 are in ramped abutting engagement. Specifically, the pressing block 44 can apply a pushing force in the horizontal direction to the insert 42 through the inclined surface, so that the positioning effect of the pressing block 44 on the insert 42 is better.

As shown in fig. 3, in the solution of the present embodiment, the pressing block 44 is connected to the cavity plate 41 by the second fastening member 45. Specifically, the second fastening member 45 is a bolt, and the pressing block 44 can be firmly attached to the cavity plate 41 by the bolt.

As shown in fig. 1, in the solution of the present embodiment, a guide structure 50 is provided between the upper and lower tables 20 and 10. Specifically, the guide structure 50 includes a guide pillar disposed on the lower die table 10, and a guide sleeve disposed on the upper die table 20, the guide pillar being inserted into the guide sleeve. The guide columns and the guide sleeves can ensure that the upper die table 20 moves in the vertical direction relative to the lower die table 10.

As shown in fig. 1, in the solution of the present embodiment, the punching die further includes a stripper plate 60, the stripper plate 60 is disposed between the upper die table 20 and the lower die table 10, and elastic pushing structures 70 are disposed on both sides of the stripper plate 60. Specifically, the elastic pushing structure 70 includes an upper nitrogen spring and a lower nitrogen spring, which are capable of applying an elastic force to the stripper plate 60. In demolding, the upper mold 20 is moved upward, and the stripper plate 60 presses against the track shoe, thereby separating the punch 32 from the track shoe.

According to the structure, the special application has the following advantages:

1. the bottom of the punch is designed in a step shape and is fixed by a pressing plate, so that the punch is very convenient to replace;

2. the problem of T type structure because of the punching press is unloaded frequently, the fracture is drawn in the atress is solved.

3. According to the thickness of the track plate, the lengths of the multiple punches are different, so that a stepped punching process is realized, and the vibration to the die in the punching process is reduced;

4. the die plate, the insert and the punching sleeve are split, the problem of punching deflection caused by die staggering of the die is solved, and the replacement of a damaged part of the die assembly is very convenient.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A punching die, comprising:

a lower die table (10);

the mould assembling device comprises an upper mould table (20), wherein an upper base plate (80) is arranged on the upper mould table (20);

punch subassembly (30), set up on upper padding plate (80), punch subassembly (30) include punch fixing plate (31), drift (32) and clamp plate (33), wherein, punch fixing plate (31) set up on upper padding plate (80), drift (32) are by setting up from last down on punch fixing plate (31), clamp plate (33) cover is established punch (32) are gone up and are set up on punch fixing plate (31).

2. The punching die according to claim 1, wherein the punch (32) includes a large diameter section (321), a small diameter section (322), and a step surface connecting the large diameter section (321) and the small diameter section (322), the punch holder plate (31) is provided with a first mounting hole in which the large diameter section (321) is mounted, the pressing plate (33) is provided with a second mounting hole in which the small diameter section (322) is mounted, and the pressing plate (33) abuts against the step surface.

3. The punching die according to claim 1 or 2, wherein the pressure plate (33) is fixed to the punch retainer plate (31) by a first fastener.

4. The punching die according to claim 1, wherein the punch retainer plate (31) is secured to the upper backing plate (80) by a third fastener.

5. The punching die according to claim 1 or 2, wherein said punch (32) is plural, and a plurality of said punches (32) are different in length.

6. The punching die according to claim 1 or 2, further comprising a die assembly (40), the die assembly (40) being disposed on the lower die table (10), the die assembly (40) comprising a die plate (41) and an insert (42), the die plate (41) being provided with a receiving recess, the insert (42) being disposed in the receiving recess, and the insert (42) and the receiving recess being in clearance fit, the insert (42) being provided with a punch sleeve (43), the punch sleeve (43) being adapted to cooperate with the punch (32).

7. The punching die according to claim 6, wherein the die assembly (40) further comprises a hold-down block (44), the hold-down block (44) cooperating with the insert (42), the hold-down block (44) being adapted to secure the insert (42).

8. The punch die of claim 7 wherein the hold down block (44) and the insert (42) are in ramped abutting engagement.

9. The punching die according to claim 7, wherein the pressing block (44) is connected to the cavity plate (41) by a second fastener (45).

10. The punching die according to claim 1, wherein a guide structure (50) is provided between the upper die table (20) and the lower die table (10).

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