CN214488490U - High-precision punching die - Google Patents

Abstract

The application relates to a cut-out press that precision is high, it includes mould and lower mould, it presses the flitch to be provided with between mould and the lower mould, it is provided with the connecting rod to go up the mould, press the flitch to pass through the connecting rod and be connected with last mould, it wears to be equipped with blanking spare to press the activity on the flitch, the upper surface of lower mould is provided with positioner, positioner's central line and the central line coincidence of blanking spare each other, the cover is equipped with the work piece on the positioner. The present application has the following effects: the punching position error caused by workpiece displacement in the punching process can be prevented, and the workpiece punching quality can be improved.

Description

High-precision punching die

Technical Field

The application relates to the field of dies, in particular to a punching die with high precision.

Background

Punching refers to punching various patterns on materials such as steel plates, leather, cloth, wood plates and the like to meet different requirements.

Many metal devices are now produced through a punching process, in which a punching die is a die for punching a metal material, but the metal material may be displaced during the punching process, resulting in positional deviation of the punched hole, and thus improvements are required.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a punching position is deviated due to the fact that a metal piece is possibly displaced in a punching process, the application provides a punching die with high precision.

The application provides a high-precision punching die adopts following technical scheme:

the utility model provides a cut-out press that precision is high which characterized in that: including last mould and lower mould, go up and be provided with the pressure flitch between mould and the lower mould, it is provided with the connecting rod to go up the mould, the pressure flitch passes through the connecting rod and is connected with last mould, blanking spare is worn to be equipped with in the activity on the pressure flitch, the upper surface of lower mould is provided with positioner, positioner's central line and the central line coincidence of blanking spare each other, the last cover of positioner is equipped with the work piece.

Through adopting above-mentioned technical scheme, the work piece cover that will punch a hole the process establishes on positioner, and the work piece is restricted by positioner this moment, and the work piece is difficult to take place to shift during punching a hole for the position of punching a hole is more accurate, and then has promoted the precision of mould.

Preferably, the positioning device comprises a positioning piece and a base, the positioning piece is connected to the upper surface of the base, the workpiece is sleeved on the positioning piece, a mounting groove is formed in the upper surface of the lower die, and the base is mounted in the mounting groove.

By adopting the technical scheme, the positioning device can be detached from the mounting groove of the lower die, different positioning devices can be selected according to different workpieces, and when different workpieces are processed, the original positioning device can be taken down and replaced by the positioning device corresponding to a new workpiece.

Preferably, the lower surface of the pressure plate is connected with a rubber block.

Through adopting above-mentioned technical scheme, when punching a hole, go up the mould and drive the pressure flitch and move down, the rubber block that presses under the flitch pastes tightly with the work piece earlier, because the rubber block is soft material slightly, when the rubber block compresses tightly on the work piece, the work piece is difficult to take place the skew.

Preferably, a plurality of anti-slip strips are arranged on the rubber block and arranged on the lower surface of the rubber block, and the anti-slip strips are uniformly distributed on the lower surface of the rubber block.

Through adopting above-mentioned technical scheme, antislip strip and work piece contact, the point contact can play better pressure material effect than the face contact, reduces the gliding possibility of work piece, promotes the quality of punching a hole.

Preferably, a first through hole is formed in the pressure plate, the blanking piece penetrates through the first through hole, a positioning groove is formed in the inner wall of the first through hole, a positioning strip is arranged on the outer wall of the blanking piece, and the positioning strip is mutually spliced and matched with the positioning groove.

Through adopting above-mentioned technical scheme, when blanking spare was installed on the pressure flitch, location strip and constant head tank were matchd each other, and blanking spare can't rotate this moment, and then has avoided the precision of punching a hole poor that leads to because blanking spare deflects at the in-process that punches a hole.

Preferably, go up the mould and be provided with a plurality of guide bars, each the upper end and the last mould of guide bar are connected, a plurality of second holes of stepping down have been seted up to the lower mould, the second hole of stepping down corresponds with the position of guide bar, each the lower extreme of guide bar can insert in the second hole of stepping down, each the guide bar all wears to locate the pressure flitch.

Through adopting above-mentioned technical scheme, the guide bar can play the effect of direction, and the in-process of punching a hole goes up the mould and can fall along the guide bar with the pressure flitch, can avoid the in-process of whereabouts to appear the deviation and lead to punching a hole the precision poor.

Preferably, each guide rod is sleeved with a spring, the spring is sleeved on the guide rod between the material pressing plate and the lower die plate, and the upper end of the spring is connected to the lower surface of the material pressing plate.

Through adopting above-mentioned technical scheme, accomplish the back that punches a hole, the pressure flitch can kick-back fast, has saved the required resilience power of traditional cut-out press, has also accelerated production efficiency.

Preferably, the lower end edge of each guide rod is arranged at a right-angled angle.

Through adopting above-mentioned technical scheme, the position of chamfer forms an inclined guide surface, and the lower extreme that can be convenient for the guide bar inserts and gives way downthehole.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) the punching position error caused by workpiece displacement in the punching process can be prevented;

(2) the punching quality of the workpiece can be improved.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is an exploded view of the present embodiment;

FIG. 3 is a schematic structural view of the present embodiment;

FIG. 4 is a schematic structural view of the present embodiment;

fig. 5 is a partial schematic view of the present embodiment.

Reference numerals: 1. an upper die; 2. a lower die; 3. a material pressing plate; 4. a positioning device; 5. a workpiece; 6. a rubber block; 7. blanking parts; 8. a guide bar; 9. a spring; 10. a connecting rod; 21. mounting grooves; 22. a second abdicating hole; 31. a first through hole; 32. positioning a groove; 33. a bell mouth; 41. a positioning member; 42. a base; 61. a first abdicating hole; 62. anti-slip strips; 71. and a positioning strip.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a high-precision punching die. Referring to fig. 1 and 2, a high-precision punching die comprises an upper die 1, a lower die 2 and a pressure plate 3, wherein the pressure plate 3 is connected with the upper die 1 through a connecting rod 10, the pressure plate 3 is arranged between the upper die 1 and the lower die 2, a positioning device 4 is arranged on the lower die 2, the positioning device 4 is arranged at the center of the lower die 2, the central line of the positioning device 4 and the central line of a blanking piece 7 coincide with each other, and a workpiece 5 needing punching is arranged on the positioning device 4.

Referring to fig. 1 and 2, the positioning device 4 is specifically a positioning element 41 and a base 42, the positioning element 41 can be provided with a plurality of different positioning elements 41 according to different shapes of the workpiece 5, each different positioning element 41 is connected to a different base 42, wherein the upper surface of the lower die 2 is provided with an installation groove 21, and the base 42 of the positioning device 4 is placed on the installation groove 21.

Referring to fig. 3, the bottom of pressure flitch 3 is provided with the rubber piece 6, and the rubber piece 6 is glued in pressure flitch 3 with powerful glue, and the middle part of rubber piece 6 has been seted up first hole 61 of stepping down, and first hole 61 of stepping down can supply the activity of blanking spare 7, and the lower surface of rubber piece 6 is provided with a plurality of antislip strip 62, and antislip strip 62 evenly distributed is in 6 lower surfaces of rubber piece, and antislip strip 62 and rubber piece 6 injection moulding as an organic whole.

Referring to fig. 4 and 5, a first through hole 31 is formed in the center of the pressure plate 3, a blanking part 7 penetrates through the first through hole 31, a positioning groove 32 is formed in the inner wall of the first through hole 31, a positioning strip 71 is arranged on the outer wall of the blanking part 7, the positioning strip 71 can be mutually inserted and matched with the positioning groove 32 to limit the rotation of the blanking part 7, the blanking part 7 can only move up and down when being installed in the first through hole 31, two guide surfaces are arranged on an opening of the positioning groove 32 communicated with the upper end face of the pressure plate 3, and the two guide surfaces enclose to form a horn mouth 33.

Referring to fig. 1 and 2, four corners of going up mould 1 all are provided with guide bar 8, four corners of pressure flitch 3 are worn to locate by guide bar 8, the lower extreme of guide bar 8 can with lower mould 2 phase-matches, specifically set up the second hole of stepping down 22 corresponding with guide bar 8 for four corners of lower mould 2, when punching a hole and going on, the lower extreme of guide bar 8 can insert in the second hole of stepping down 22, and the lower tip chamfer setting of guide bar 8, the lower extreme that makes guide bar 8 forms the spigot surface of an slope, be convenient for guide bar 8 to insert in the second hole of stepping down 22.

Referring to fig. 1 and 2, a section of the guide rod 8 located between the pressure plate 3 and the lower die 2 is sleeved with a spring 9, wherein an upper end of the spring 9 is fixedly connected (welded or otherwise) with a lower surface of the pressure plate 3, and a lower end of the spring 9 can abut against an upper surface of the lower die 2.

The implementation principle of the high-precision punching die in the embodiment of the application is as follows:

when punching, install work piece 5 on positioner 4, work piece 5 receives positioner 4's restriction this moment, and work piece 5 can not shift along the horizontal direction, can make the position of punching more accurate, and the precision is higher, and then promotes the quality of work piece 5.

And the base 42 of the positioning device 4 can be taken down from the mounting groove 21 of the lower die 2, different workpieces 5 can produce corresponding positioning devices 4, different positioning devices 4 can be selected according to different workpieces 5, and when different workpieces 5 are machined, the original positioning device 4 can be taken down and replaced by the positioning device 4 corresponding to a new workpiece 5.

During punching, the pressure flitch 3 at first compresses tightly work piece 5, because the pressure flitch 3 is connected with the rubber piece 6, the rubber piece 6 is compared the work piece 5 that the metal was made and is the object that is soft slightly, so the rubber piece 6 can be more abundant with the contact of work piece 5, and the 6 lower surfaces of rubber piece are provided with a plurality of antislip strips 62, enable the pressure flitch 3 and play better pressure material effect, avoid pressing the material inadequately and lead to work piece 5 to shift to promote the quality of punching a hole.

When the hole to be punched is an irregular hole, the rotational degree of freedom of the punching member 7 is restricted by the positioning groove 32 and the positioning bar 71, and the angle of the punched irregular hole on the workpiece 5 is difficult to deviate, thereby improving the quality of the workpiece 5.

After punching, the spring 9 sleeved on the guide rod 8 can accelerate the rebound speed of the upper die 1 and the material pressing plate 3, so that certain rebound power can be saved, and the production efficiency is accelerated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a cut-out press that precision is high which characterized in that: including last mould (1) and lower mould (2), it presses flitch (3) to be provided with between last mould (1) and lower mould (2), it is provided with connecting rod (10) to go up mould (1), press flitch (3) to be connected with last mould (1) through connecting rod (10), it wears to be equipped with blanking spare (7) to press flitch (3) to go up the activity, the upper surface of lower mould (2) is provided with positioner (4), the central line of positioner (4) and the central line coincidence of blanking spare (7) each other, the cover is equipped with work piece (5) on positioner (4).

2. A high-precision punching die according to claim 1, wherein: positioner (4) are including setting element (41) and base (42), base (42) upper surface is connected in setting element (41), work piece (5) cover is established on setting element (41), the upper surface of lower mould (2) is provided with mounting groove (21), base (42) are installed in mounting groove (21).

3. A high-precision punching die according to claim 1, wherein: the lower surface of the material pressing plate (3) is connected with a rubber block (6).

4. A high-precision punching die according to claim 3, wherein: the anti-skid rubber block is characterized in that a plurality of anti-skid strips (62) are arranged on the rubber block (6), the anti-skid strips (62) are arranged on the lower surface of the rubber block (6), and the anti-skid strips (62) are uniformly distributed on the lower surface of the rubber block (6).

5. A high-precision punching die according to claim 1, wherein: first through-hole (31) have been seted up on pressure flitch (3), blanking spare (7) are worn to locate in first through-hole (31), first through-hole (31) inner wall is provided with constant head tank (32), blanking spare (7) outer wall is provided with location strip (71), location strip (71) and constant head tank (32) are pegged graft each other and are matchd.

6. A high-precision punching die according to claim 1, wherein: go up mould (1) and be provided with a plurality of guide bars (8), each the upper end and last mould (1) of guide bar (8) are connected, a plurality of second holes of stepping down (22) have been seted up in lower mould (2), the second hole of stepping down (22) corresponds with the position of guide bar (8), each the lower extreme of guide bar (8) can insert in the second hole of stepping down (22), each guide bar (8) all wear to locate pressure flitch (3).

7. A high-precision punching die according to claim 6, wherein: each guide rod (8) is sleeved with a spring (9), the springs (9) are sleeved on the guide rods (8) between the pressure plate (3) and the lower die (2), and the upper ends of the springs (9) are connected to the lower surface of the pressure plate (3).

8. A high-precision punching die according to claim 6, wherein: the edges of the lower ends of the guide rods (8) are arranged in a reverse right angle mode.

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