CN213350425U - Stamping die - Google Patents

Abstract

The utility model discloses a stamping die, the stamping die that is disclosed includes fixing base, punching pin and takes off the flitch, the punching pin is installed in the fixing base, the fixing base is provided with first step portion towards one end of taking off the flitch, take off the flitch and offer the via hole that supplies the punching pin to move, and with the removal space of via hole intercommunication, be provided with the second step portion with first step portion matched with in the removal space; the first step part and the second step part are both coated on part of the peripheral side surface of the punch; when the punch moves in the through hole, the first step part moves in the moving space and is matched with the second step part to support the punch together. The scheme can reduce the damage rate of the punch.

Description

Stamping die

Technical Field

The utility model relates to a stamping equipment technical field especially relates to a stamping die.

Background

In the existing stamping die, the stripper plate is usually provided with a punch through hole for the punch to move, and a fixing seat through hole for the punch fixing seat to move.

When the stamping die runs, the punch is in a frequent stamping state, and the exposed section of the punch is easy to be broken due to the concentrated internal stress because of the lack of support, so that the damage rate of the punch is undoubtedly high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a stamping die to reduce the spoilage of punching pin.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides a stamping die, which comprises a fixed seat, a punch and a stripper plate, wherein the punch is arranged on the fixed seat, one end of the fixed seat facing the stripper plate is provided with a first step part, the stripper plate is provided with a via hole for the punch to move, and a moving space communicated with the via hole, and a second step part matched with the first step part is arranged in the moving space;

the first step part and the second step part are both coated on part of the peripheral side surface of the punch; when the punch moves in the through hole, the first step part moves in the moving space and is matched with the second step part to support the punch together.

The utility model discloses a technical scheme can reach following beneficial effect:

the utility model discloses an among the stamping die, the fixing base orientation is taken off the one end of flitch and is provided with first step portion, takes off the flitch and offers the removal space with the via hole intercommunication, is provided with the second step portion with first step portion matched with in the removal space, and first step portion and the equal cladding of second step portion are in the part week side of punching pin, and when the punching pin removed in the via hole, first step portion removed in removing the space to support the punching pin jointly with the cooperation of second step portion. Under such setting, when the stamping die punches and opens the hole on the workpiece to be processed, the punch moves in the via hole, and no matter the stamping die is in the die opening state or the die closing state, the peripheral side surface of the punch is always coated by at least one of the first step part and the second step part, so that the punch is prevented from being in the completely exposed state.

Compared with the prior art, the utility model discloses a stamping die is when using, even if the punching pin is at punching process internal stress concentration, nevertheless because the week side of punching pin is in all the time by the supported state, consequently can avoid the punching pin to be damaged, and then reaches the effect that effectively reduces the punching pin spoilage.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 and fig. 2 are isometric views of a stamping die according to an embodiment of the present invention in an open die state and a closed die state, respectively;

FIG. 3 is a schematic view of the stamping die hidden stripper insert of FIG. 1;

FIG. 4 is a schematic view of the stamping die hidden stripper insert of FIG. 2;

fig. 5 and fig. 6 are cross-sectional views of a stamping die according to an embodiment of the present invention in an open state and a closed state, respectively;

fig. 7 is a diagram of the matching relationship among the punch, the fixing element and the supporting element according to the embodiment of the present invention;

description of reference numerals:

100-fixed seat, 110-first step part, 111-first connecting surface, 112-first step surface, 113-second step surface, 120-first installation space, 130-fixed element, 140-supporting element,

200-punch, 210-positioning groove,

300-stripping insert, 310-via hole, 320-moving space, 330-second step part, 331-second connecting surface, 332-third step surface, 333-fourth step surface,

400-edge insert, 410-edge,

500-parts to be processed.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 7, an embodiment of the present invention discloses a stamping die, which is suitable for stamping and punching a hole on a workpiece 500. In the present embodiment, the members 500 to be processed are of various types, such as various semi-finished tapes, parts, and the like. The disclosed stamping die includes a holder 100, a punch 200, and a stripper plate.

When the stamping die is used, the punch 200 performs a blanking effect on the workpiece 500 to be processed, and the punch penetrates through the workpiece 500 to be processed to form a hole in the workpiece 500 to be processed; the shape of the punch 200 is not limited in this embodiment, and can be selected according to the parameters of the hole to be drilled on the workpiece 500. In order to stably drive the punch 200, the punch 200 is usually installed on the fixing base 100, the fixing base 100 serves as an installation support base for the punch 200, and as described later, the punch 200 is partially embedded in the fixing base 100, so that the fixing base 100 also plays a certain role in protecting the punch 200.

The stripper plate is provided with a through hole 310 for the punch 200 to move, when the stamping die is used, the punch 200 keeps stretching action, that is, the punch 200 extends out of the through hole 310 or retracts into the through hole 310, because the workpiece 500 to be processed is generally sleeved on the punch 200 after being blanked by the punch 200, in the process of retracting the punch 200, the workpiece 500 to be processed is blocked by the stripper plate and is separated from the punch 200, and further, the workpiece 500 to be processed can continuously move to enable the area, which is not perforated, of the workpiece 500 to be processed to be opposite to the punch 200, so that the whole processing procedure can be ensured to be continuously carried out.

In general, in order to realize the punching fit with the punch 200, the punching die further includes a lower die, the lower die is provided with a cutting edge 410, and the cutting edge 410 is disposed opposite to the via hole 310. Specifically, when the stamping die is in the die opening state, the workpiece 500 to be processed is located between the stripper plate and the lower die, and the punch 200 is located in the via hole 310; when the workpiece 500 to be processed is moved to the processing station, the stamping die can be controlled to be in a closed die state, the punch 200 extends out of the through hole 310 and into the cutting edge 410, and in the process, the punch 200 punches the workpiece 500 to be processed and realizes hole opening on the workpiece 500 to be processed.

In the conventional stamping die, a safety gap is preset between the bottom end of the fixing seat 100 and the bottom surface of the through hole 310 of the fixing seat 100, and a part of the punch 200, which is completely exposed in the safety gap, is very easy to damage due to stress concentration inside the punch 200 due to lack of support during the frequent stamping action of the punch 200. Therefore, in order to solve the above problem, the fixing base 100 of the embodiment is provided with the first step portion 110 at one end facing the stripper plate, the stripper plate is provided with the moving space 320 communicated with the via hole 310, and the moving space 320 is provided with the second step portion 330 engaged with the first step portion 110, so that the first step portion 110 can move in the moving space 320 without interfering with the second step portion 330.

Meanwhile, the first stepped portion 110 and the second stepped portion 330 are both wrapped around part of the circumferential side surface of the punch 200, and when the punch 200 moves in the via hole 310, the first stepped portion 110 moves in the moving space 320 and cooperates with the second stepped portion 330 to support the punch 200 together. It should be noted that, since the punch 200 is fixedly disposed on the fixing base 100, the covering region of the first step portion 110 for the punch 200 is determined, and when the punch 200 moves relative to the second step portion 330, the first step portion 110 and the second step portion 330 also move relative to each other, but based on the above limitation, in this embodiment, the bottom end of the first step portion 110 cannot move to the top end of the second step portion 330.

Specifically, as shown in fig. 5, when the stamping die is in the open state, the punch 200 moves away from the workpiece 500, at this time, the first step portion 110 moves upward in the space between the second step portion 330 and the inner wall of the stripper plate, and the first step portion 110 and the second step portion 330 jointly cover part of the circumferential side surface of the punch 200 and support the punch 200; generally, a longer part of the lower portion of the first step portion 110 can be disposed in the space, and in this case, the area of the punch 200 covered by the first step portion 110 and the second step portion 330 is more, so that the protection effect on the punch 200 is better.

Of course, the bottom end of the first stepped portion 110 may be flush with the top end of the second stepped portion 330 in the limit, and at this time, the portion of the punch 200 relatively on the upper side is covered and supported by the first stepped portion 110, and the portion of the punch 200 relatively on the lower side is covered and supported by the second stepped portion 330, but it is still ensured that there is no completely exposed section of the punch 200.

As shown in fig. 6, when the stamping die is in the closed state, the punch 200 moves toward the workpiece 500, and at this time, the first step portion 110 moves downward in the space between the second step portion 330 and the inner wall of the stripper plate, and compared with the case that the stamping die is in the open state, the area of the punch 200 covered by both the first step portion 110 and the second step portion 330 is further increased, and the internal stress is most concentrated when the punch 200 punches the workpiece 500, so that the stamping die of this embodiment can also support the punch 200 more largely in the covering surface in the closed state, and further achieve a more effective damage prevention effect.

As can be seen from the above description, in the stamping die disclosed in the embodiment of the present invention, the fixing base 100 is provided with the first step portion 110 towards one end of the stripper plate, the stripper plate is provided with the moving space 320 communicated with the via hole 310, the second step portion 330 matched with the first step portion 110 is provided in the moving space 320, and the first step portion 110 and the second step portion 330 are both wrapped on the partial circumferential side of the punch 200, when the punch 200 moves in the via hole 310, the first step portion 110 moves in the moving space 320 and cooperates with the second step portion 330 to support the punch 200 together. With this arrangement, when the stamping die performs stamping and hole opening on the workpiece 500, the punch 200 moves in the via hole 310, and no matter the stamping die is in the open state or the closed state, the circumferential side surface of the punch 200 is always covered by at least one of the first step portion 110 and the second step portion 330, thereby preventing the punch 200 from being completely exposed.

Compared with the prior art, the embodiment of the utility model discloses a stamping die is when using, even if punch 200 is at the internal stress concentration of stamping process, nevertheless because the week side of punch 200 is in all the time by the supported state, consequently can avoid punch 200 to be damaged, and then reaches the effect that effectively reduces punch 200 spoilage.

The punch 200 of the present embodiment may be disposed on the fixing base 100 in various manners, for example, one end of the punch 200 away from the stripper plate is directly and fixedly connected to the surface of the fixing base 100, and specifically, the one end may be fixedly connected to the surface of the fixing base by welding, screwing, or the like. In order to improve the connection stability and reliability of the punch 200 on the fixing base 100, a first installation space 120 may be formed in the fixing base 100 of the embodiment, and the punch 200 is partially and fixedly embedded in the first installation space 120.

With such a configuration, the portion of the punch 200 in the first installation space 120 is also covered by the fixing seat 100, and the portion of the punch 200 can be supported in the circumferential direction, so that the stress failure due to the lack of support on one side can be avoided.

The first installation space 120 provides a receiving space for the punch 200, and the first installation space 120 may be a blind hole, for example, the punch 200 may be a blind hole, and the inner wall of the blind hole is in clearance fit with the punch 200, so that the punch 200 can be smoothly inserted into the blind hole. The second installation space and the third installation space, which will be described later, are not limited to the present embodiment.

In another specific embodiment, the first installation space 120 may penetrate through the fixing base 100, in this case, a wire cutting process device may be used to directly penetrate through the fixing base 100 when the first installation space 120 is processed, which is low in cost and simple in operation. The second and third installation spaces described later may also be formed by a wire cutting process.

In order to reliably fix the punch 200, a second installation space communicated with the outside may be further formed in the fixing base 100 of the embodiment, and the second installation space is communicated with the first installation space 120; a fixing element 130 is arranged in the second mounting space, a positioning groove 210 is formed in the side surface of the punch 200, the fixing element 130 is partially embedded in the positioning groove 210, and the punch 200 is fixed in the first mounting space 120; as shown in fig. 7.

When the assembly is specifically performed, an operator can firstly install the punch 200 into the first installation space 120, and make the positioning groove 210 of the punch 200 located in the communication area between the first installation space 120 and the second installation space, and then insert the fixing element 130 into the second installation space, and at this time, when the fixing element 130 extends into the communication area between the first installation space 120 and the second installation space, the fixing element can be smoothly inserted into the positioning groove 210; based on the mutual matching relationship between the fixing element 130 and the positioning slot 210, the fixing element 130 can limit the punch 200 through the positioning slot 210, when the punch 200 punches the workpiece 500 to be processed, the punch 200 itself will receive a reaction force and generate a tendency of moving upward in the first installation space 120, and meanwhile, the punch 200 will abut against the fixing element 130 through the positioning slot 210, so that the fixing element 130 can prevent the punch 200 from shifting, and further, the punch 200 can be reliably fixed in the fixing seat 100.

Meanwhile, the punch 200 is fixed by adopting the embodiment, and the punch 200 is convenient to replace.

Generally, for the convenience of molding the fixing element 130, the fixing element 130 may be provided as a regular rod, such as a cylindrical rod, a square rod, etc., but of course, the fixing element 130 may also be an irregular structural member on which a latch may be provided, and the latch may be inserted into the positioning groove 210.

In order to further improve the stability of the punch 200 during use, a third installation space communicated with the outside may be further formed in the fixing base 100 of the embodiment, and the third installation space is communicated with the first installation space 120; a supporting element 140 is arranged in the third installation space, and the punch 200 is positioned at the end part of the first installation space 120, is abutted against the supporting element 140 and is limited by the supporting element 140; as shown in fig. 7.

In one assembly mode, an operator can fix the punch 200 in the first installation space 120, and then insert the supporting element 140 into the third installation space, so that the supporting element 140 extends into a communication area between the first installation space 120 and the third installation space, and the end of the punch 200 is ensured to abut against the supporting element 140; when the punch 200 punches the workpiece 500 to be processed and receives a reaction force, because the end of the punch 200 is limited by the supporting element 140, the supporting element 140 can support the punch 200 to counteract the reaction force received by the punch 200 during punching the workpiece 500 to be processed, so that the tendency of the punch 200 to move upwards in the first installation space 120 can be weakened, and the stability of the punch 200 during use can be further improved.

In another assembly, the operator can install the supporting member 140 in the third installation space, and then place and fix the portion of the punch 200 in the first installation space 120.

Generally, the first step portion 110 may include a first connection surface 111, a first step surface 112 and a second step surface 113, where the first step surface 112 and the second step surface 113 are arranged in a height direction of the first step portion 110, that is, a height difference exists between the first step surface 112 and the second step surface 113, and the first step surface and the second step surface are connected through the first connection surface 111; the second step part 330 may include a second connection surface 331, a third step surface 332 and a fourth step surface 333, where the third step surface 332 and the fourth step surface 333 are arranged in a height direction of the second step part 330, that is, a height difference is formed between the third step surface 332 and the fourth step surface 333, and the third step surface 332 and the fourth step surface 333 are connected through the second connection surface 331.

Of course, the first step portion 110 and the second step portion 330 of the present embodiment have various arrangement manners, for example, the first connecting surface 111 and the second connecting surface 331 are both planes, and are arranged oppositely, the punch 200 is located between the first connecting surface 111 and the second connecting surface 331, and the peripheral side surface of the punch 200 abuts against the first connecting surface 111 and the second connecting surface 331, but the first step portion 110 and the second step portion 330 have poor covering effect on the punch 200 in this arrangement manner.

In order to optimize the supporting function of the punch 200 and enhance the protection effect of the punch 200, in the embodiment, the first connecting surface 111 is disposed toward the punch 200 and may be formed with a first receiving groove, and a part of the punch 200 is located in the first receiving groove; with this arrangement, the circumferential side surface of the punch 200 contacts the groove wall of the first accommodating groove, and the groove wall of the first accommodating groove surrounds a part of the circumferential side surface of the punch 200, which is equivalent to the first step portion 110 wrapping the part of the circumferential side surface of the punch 200 through the first accommodating groove.

Similarly, in the embodiment, the second connecting surface 331 is disposed toward the punch 200 and may have a second receiving groove, and the punch 200 is partially located in the second receiving groove; with this arrangement, the circumferential side surface of the punch 200 contacts the groove wall of the second receiving groove, and the groove wall of the second receiving groove surrounds a part of the circumferential side surface of the punch 200, which is equivalent to the second step portion 330 covering the part of the circumferential side surface of the punch 200 through the second receiving groove.

In combination, the punch 200 has a larger contact area with the first step portion 110 and the second step portion 330 on the first connection surface 111 and the second connection surface 331, respectively, so that the circumferential side surface of the punch 200 can be supported more uniformly, and a better protection effect is achieved. By changing the shape of the first receiving groove on the first step part 110 and the shape of the second receiving groove on the second step part 330, the first step part 110 and the second step part 330 can substantially completely cover the peripheral side surface of the punch 200, so that the uniform supporting effect is provided for the whole peripheral side surface of the punch 200, and the protection effect is undoubtedly the best at this time; however, it should be noted that a movable gap needs to be left between the first connection surface 111 and the second connection surface 331 to prevent the interference between the two surfaces from hindering the extending and retracting action of the punch 200.

In order to avoid the damage of the mold caused by the contact between the first step part 110 and the second step part 330 during use, in this embodiment, the first step surface 112 and the third step surface 332 are disposed opposite to each other, and the second step surface 113 and the fourth step surface 333 are disposed opposite to each other; when the press die is in the die closing state, gaps are provided between the first step surface 112 and the third step surface 332, and between the second step surface 113 and the fourth step surface 333.

It should be understood that when the stamping die is in the die closing state, gaps are respectively provided between the first step surface 112 and the third step surface 332, and between the second step surface 113 and the fourth step surface 333, that is, the punch 200 extends to the lowest position when the workpiece 500 to be machined is punched, and a gap is provided between the corresponding step surfaces, so that the two step surfaces are prevented from touching; in this case, in the process of switching the stamping die from the die closing state to the die opening state, the distance between the first step surface 112 and the third step surface 332 is further increased, and the distance between the second step surface 113 and the fourth step surface 333 is further increased, that is, the gap between the corresponding step surfaces is increased, and the two step surfaces are less likely to be in contact with each other.

If there is a gap between the peripheral side surface of the punch 200 and the first step portion 110 and the second step portion 330, the first step portion 110 and the second step portion 330 cannot support the punch 200 in time, and must be supported by being abutted against the first step portion 110 and the second step portion 330 when the punch 200 generates a slight swing after receiving a reaction force. Based on this, the punch 200 of the present embodiment may abut against both the first step portion 110 and the second step portion 330, that is, the circumferential side surface of the punch 200 is mounted abutting against the first step portion 110 and mounted abutting against the second step portion 330, in this case, when the punch 200 punches the workpiece 500 to be processed, the circumferential side surface of the punch 200 is supported by the first step portion 110 and the second step portion 330 from beginning to end, and the risk of the punch 200 being damaged may be further reduced.

In the above embodiment where the first stepped portion 110 has the first receiving groove and the second stepped portion 330 has the second receiving groove, the circumferential side surface of the punch 200 may be disposed to abut against the groove wall of the first receiving groove and abut against the groove wall of the second receiving groove.

After the stamping die is used for a long time, the stripper plate is rubbed by the punch 200 and the fixing base 100 in the areas such as the through hole 310 and the moving space 320 and is worn, so that the stripper plate needs to be replaced, and in order to reduce the operation difficulty and cost of replacement, the stripper plate of the embodiment may include the stripper insert 300, and the stripper insert 300 is provided with the through hole 310 and the moving space 320. So set up down, after stamping die used for a long time, can directly change taking off material mold insert 300, and need not take off the whole change of flitch, can simplify the change flow like this undoubtedly, and reduced the replacement cost.

Similarly, after the long-term use of the press mold, the lower mold may be frequently contacted with the punch in the region of the cutting edge 410 to cause wear, and in order to reduce the difficulty and cost of replacing the lower mold, the lower mold of this embodiment may also include the cutting edge insert 400, and the cutting edge 410 is opened on the cutting edge insert 400. With such a configuration, after the cutting edge 410 is damaged, the cutting edge insert 400 can be directly replaced without replacing the entire lower mold, which can simplify the replacement process and reduce the replacement cost.

The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The stamping die is characterized by comprising a fixed seat (100), a punch (200) and a stripper plate, wherein the punch (200) is mounted on the fixed seat (100), one end of the fixed seat (100) facing the stripper plate is provided with a first step part (110), the stripper plate is provided with a through hole (310) for the punch (200) to move, and a moving space (320) communicated with the through hole (310), and a second step part (330) matched with the first step part (110) is arranged in the moving space (320);

the first step part (110) and the second step part (330) are coated on partial peripheral side surfaces of the punch (200); when the punch (200) moves in the via hole (310), the first step part (110) moves in the moving space (320) and cooperates with the second step part (330) to support the punch (200) together.

2. The stamping die according to claim 1, wherein a first mounting space (120) is formed in the fixing seat (100), and the punch (200) is partially and fixedly embedded in the first mounting space (120).

3. Stamping die according to claim 2, characterized in that the first mounting space (120) penetrates the holder (100).

4. The stamping die according to claim 2, wherein a second mounting space communicated with the outside is further formed in the fixing seat (100), and the second mounting space is communicated with the first mounting space (120); a fixing element (130) is arranged in the second mounting space, a positioning groove (210) is formed in the side surface of the punch (200), the fixing element (130) is partially embedded in the positioning groove (210), and the punch (200) is fixed in the first mounting space (120).

5. The stamping die according to claim 2, wherein a third installation space communicated with the outside is further formed in the fixing seat (100), and the third installation space is communicated with the first installation space (120); a supporting element (140) is arranged in the third installation space, and the punch (200) is positioned at the end part of the first installation space (120), is abutted against the supporting element (140) and is limited by the supporting element (140).

6. The press die according to claim 1, wherein the first step portion (110) includes a first connecting surface (111), a first step surface (112), and a second step surface (113), the first step surface (112) and the second step surface (113) being arranged in a height direction of the first step portion (110) and being connected by the first connecting surface (111); the first connecting surface (111) is arranged towards the punch (200) and is provided with a first accommodating groove, and the punch (200) is partially positioned in the first accommodating groove;

the second step part (330) comprises a second connecting surface (331), a third step surface (332) and a fourth step surface (333), and the third step surface (332) and the fourth step surface (333) are arranged in the height direction of the second step part (330) and are connected through the second connecting surface (331); the second connecting surface (331) is arranged towards the punch (200) and is provided with a second accommodating groove, and the part of the punch (200) is positioned in the second accommodating groove.

7. The press die according to claim 6, wherein the first step face (112) is disposed opposite to the third step face (332), and the second step face (113) is disposed opposite to the fourth step face (333); when the stamping die is in a die closing state, gaps are reserved between the first step surface (112) and the third step surface (332) and between the second step surface (113) and the fourth step surface (333).

8. The stamping die of claim 1, wherein the punch (200) abuts both the first step portion (110) and the second step portion (330).

9. Stamping die according to claim 1, wherein the stripper plate comprises a stripper insert (300), the stripper insert (300) opening the through hole (310) and the moving space (320).

10. The stamping die according to claim 1, wherein the stamping die comprises a lower die, the lower die is provided with a cutting edge (410), the cutting edge (410) is arranged opposite to the via hole (310), and when the stamping die is in a die closing state, the punch (200) extends out of the via hole (310) and into the cutting edge (410).

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