CN213915685U

CN213915685U - Punch and stamping die

Info

Publication number: CN213915685U
Application number: CN202021826897.0U
Authority: CN
Inventors: 樊成权; 赵欣刚; 郭忠海; 曹建荣
Original assignee: Beijing Blue Light Precision Machinery Co ltd
Current assignee: Beijing Blue Light Precision Machinery Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-08-10
Anticipated expiration: 2030-08-27

Abstract

The embodiment of the application provides a drift and stamping die, belongs to valve block processing technology field. The punch is provided with an arc-shaped cutting edge, and the cutting edge is used for punching the valve plate; the height difference is arranged between the two ends of the cutting edge, and the horizontal height from one end of the cutting edge to the other end of the cutting edge is gradually increased or decreased. Use a drift and stamping die that this application provided, not only can process out the valve block and be curved hole, also can reduce the blade and be the impact strength that the plane blanking brought, and then increased the intensity of blade.

Description

Punch and stamping die

Technical Field

The embodiment of the application relates to the technical field of valve plate machining, in particular to a punch and a stamping die comprising the punch.

Background

The valve plate is a device for controlling the liquid to pass through so as to reduce the pressure of the liquid or change the flow rate and the flow direction of the liquid.

When machining the valve sheet, it is generally necessary to machine the valve sheet through a punch. The punch is a mechanical tool which is arranged on a stamping die and is used for continuously blanking and stamping the valve plate so that the valve plate is deformed or separated.

However, if the valve plate is required to be provided with the arc-shaped hole, the arc-shaped hole cannot be punched by the conventional punch.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a punch and a stamping die, and aims to solve the problem that an arc-shaped hole cannot be punched by a conventional punch.

A first aspect of the embodiments of the present application provides a punch, where the punch has an arc-shaped cutting edge, and the cutting edge is used to punch a valve plate;

the height difference is arranged between the two ends of the cutting edge, and the horizontal height from one end of the cutting edge to the other end of the cutting edge is gradually increased or decreased.

Optionally, the height difference between the two ends of the cutting edge is between 0.3mm and 0.4 mm.

A second aspect of the embodiments of the present application provides a stamping die, including a punch as provided in the first aspect of the embodiments of the present application, further including: an upper die and a lower die;

the upper die is arranged above the lower die, and moves towards the direction close to or away from the lower die under the action of external force; the punch is mounted on the upper die and is in sliding fit with the upper die;

the lower die is parallel to the upper die and used for supporting the valve plate;

the lower die is provided with an arc-shaped groove, the arc-shaped groove is aligned with the punch, and the arc-shaped groove is used for accommodating the punch;

and the upper die continues to move after being attached to the lower die, so that the punch is punched out and extends into the arc-shaped groove to punch the valve plate on the lower die.

Optionally, the upper mold includes: a main pushing part and a sub pushing part;

the main pushing part is positioned above the sub pushing part, and the punch is arranged on the main pushing part;

the sub-pushing part is parallel to the main pushing part, a sliding groove is formed in the sub-pushing part, and the sliding groove is in sliding fit with the punch;

a gap exists between the main pushing part and the sub pushing part;

and the upper die and the lower die continue to move after being attached, and the gap between the main pushing part and the sub pushing part is eliminated, so that the punch is punched out from the bottom of the sliding chute.

Optionally, a sheath is arranged on the punch, and an accommodating groove is arranged on the sub-pushing part;

the sheath is connected with the main pushing part and is positioned on the outer wall of the punch;

the holding tank with the spout intercommunication for hold the sheath with the drift, the holding tank with sheath sliding fit.

Optionally, there is a gap between the sheath and the receiving groove.

Optionally, the pushing device further comprises a pushing member, wherein an accommodating cavity is formed in the main pushing part and is used for accommodating the pushing member;

the ejector includes: a connecting part and a spring;

one end of the connecting part is provided with a boss which is connected with the spring, and the other end of the connecting part extends out of the accommodating cavity and is connected with the sub pushing part;

one end of the spring, which is far away from the connecting part, is connected with the top of the accommodating cavity;

and the upper die and the lower die continue to move after being attached, so that the boss moves upwards, the spring is compressed, and a gap between the main pushing part and the sub pushing part is eliminated.

Optionally, a blanking punch is arranged on the upper die;

and the upper die and the lower die continue to move after being attached, so that the punch and the blanking punch can be simultaneously punched out, and the valve plates on the lower die are simultaneously machined.

Optionally, the upper die is provided with a guide post, and the lower die is provided with a guide groove;

when the upper die and the lower die continue to move after being attached, the guide column moves along the length direction of the guide groove.

Has the advantages that:

according to the punch and the stamping die, the arc-shaped cutting edge is arranged on the punch, so that the punch can continuously move after the upper die and the lower die are attached to each other, and an arc-shaped hole is machined in the valve plate; and through the difference in height between the blade both ends, can be so that the blade is the slope form, can reduce the blade and be the impact strength that the plane blanking brought when blanking the valve block, and then increased the intensity of blade.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic side view of a punch according to an embodiment of the present application;

fig. 2 is a schematic top view of a punch according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a stamping die according to yet another embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3 according to yet another embodiment of the present application;

FIG. 5 is a top view of a lower die according to yet another embodiment of the present application;

fig. 6 is a schematic view of a strip valve sheet simultaneously processed by a punch and a blanking punch according to still another embodiment of the present application.

Description of reference numerals: 1. a punch; 11. cutting edges; 2. an upper die; 21. a main pushing portion; 211. a sheath; 212. an accommodating chamber; 22. a sub-pushing part; 221. a chute; 222. accommodating grooves; 3. a lower die; 31. An arc-shaped slot; 32. a guide groove; 4. pushing out the piece; 41. a connecting portion; 411. a boss; 42. a spring; 5. Blanking punch; 6. a guide post; 7. a strip valve plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

Example one

Referring to fig. 1 and 2, the punch 1 is provided with an arc-shaped cutting edge 11, and the cutting edge 11 is used for blanking a valve plate;

the two ends of the cutting edge 11 have a height difference, and the horizontal height from one end of the cutting edge 11 to the other end of the cutting edge is gradually increased or decreased.

The shape of the cutting edge 11 is a quarter-circle shape, and the shape of the punch 1 can be the same as the shape of the cutting edge 11, that is, the punch 1 is also a quarter-circle shape.

Wherein, the height difference between the two ends of the cutting edge 11 is between 0.3mm and 0.4 mm.

In the embodiment, as the punch 1 is provided with the arc-shaped cutting edge 11, the punch can continuously move after the upper die 2 and the lower die 3 are attached, and the valve plate is processed into the arc-shaped hole; and through the difference in height between 11 both ends of blade, can be so that blade 11 is the slope form, can reduce blade 11 and be the impact strength that the plane blanking brought when blanking the valve block, and then increased blade 11's intensity.

Example two

Referring to fig. 3, a stamping die includes a punch 1 according to the first embodiment, and further includes: an upper die 2 and a lower die 3;

the upper die 2 is arranged above the lower die 3, and the upper die 2 moves towards the direction close to or away from the lower die 3 under the action of external force; the punch 1 is arranged on the upper die 2 and is in sliding fit with the upper die 2;

the lower die 3 is parallel to the upper die 2 and used for supporting a valve plate;

referring to fig. 6, the lower mold 3 has an arc-shaped groove 31 thereon; referring to fig. 3, the arc-shaped slot 31 is aligned with the punch 1, and the arc-shaped slot 31 is used for accommodating the punch 1;

and the upper die 2 and the lower die 3 continue to move after being attached so that the punch 1 punches out and extends into the arc-shaped groove 31 to punch the valve plate on the lower die 3.

Referring to fig. 5, the valve plate is a strip valve plate 7, and the whole strip valve plate 7 is placed on the lower die 3; the inner bottom wall of the arc-shaped groove 31 is inclined in the arc direction thereof for abutting against the punch 1.

Referring to fig. 3 and 6, the working process of the stamping die is as follows: firstly, the valve plate is placed on the lower die 3 and is positioned right above the arc-shaped groove 31; applying a downward acting force to the upper die 2 to enable the upper die 2 to move towards the lower die 3, wherein when the upper die 2 moves to be attached to the lower die 3, the punch 1 is not punched out of the upper die 2; and then driving the upper die 2 to move towards the direction deep into the lower die 3, wherein in the moving process, the punch 1 gradually punches out from the upper die 2 and extends into the arc-shaped groove 31, and because the valve plate is positioned right above the arc-shaped groove 31, when the punch 1 extends into the arc-shaped groove 31, the cutting edge 11 on the punch 1 can punch the valve plate.

Based on the stamping die, the following specific examples are provided, and the examples can be combined arbitrarily to form a new stamping die without mutual conflict.

With reference to fig. 3, in a possible embodiment, the upper die 2 comprises: a main pushing part 21 and a sub-pushing part 22;

the main pushing part 21 is positioned above the sub pushing part 22, and the punch 1 is arranged on the main pushing part 21;

the sub-pushing part 22 is parallel to the main pushing part 21, a sliding groove 221 is arranged on the sub-pushing part 22, and the sliding groove 221 is in sliding fit with the punch 1;

a gap exists between the main pushing part 21 and the sub pushing part 22;

after the upper die 2 and the lower die 3 are attached to each other, the upper die continues to move, and the gap between the main pushing portion 21 and the sub pushing portion 22 is eliminated, so that the punch 1 is punched out from the bottom of the sliding groove 221.

The working process of the main pushing part 21 and the sub pushing part 22 is as follows: when the upper die 2 and the lower die 3 are not attached or the upper die 2 and the lower die 3 are just attached to each other, the punch 1 is positioned in the sliding groove 221, and a gap exists between the main pushing part 21 and the sub pushing part 22; after the upper die 2 and the lower die 3 are attached to each other, the main pushing portion 21 still receives an acting force and moves in a direction close to the sub pushing portion 22, and the main pushing portion 21 drives the punch 1 to punch out from the sliding groove 221, and meanwhile, a gap between the main pushing portion 21 and the sub pushing portion 22 is eliminated.

Through

spout

221 and 1 sliding fit's of drift setting, spout 221 can play limiting displacement to drift 1 to avoid drift 1 to remove the in-process to rock.

In this embodiment, the punch 1 is provided with a sheath 211, and the sub pushing portion 22 is provided with an accommodating groove 222;

the sheath 211 is connected with the main pushing part 21, and the sheath 211 is positioned on the outer wall of the punch 1;

the receiving groove 222 communicates with the slide groove 221 for receiving the sheath 211 and the punch 1, and the receiving groove 222 is slidably fitted to the sheath 211.

Wherein, the sheath 211 is fixed to the bottom of the main pushing part 21 by a pin or a screw and is located on the outer wall of the punch 1.

By providing the sheath 211, the punch 1 can be isolated from the inner wall of the housing groove 222, and the punch 1 can be protected when the punch 1 performs blanking.

Wherein, a part of the punch 1 is located in the accommodating groove 222 and connected with the sheath 211, another part of the punch 1 is in sliding fit with the sliding groove 221, and a gap exists between the sheath 211 and the side wall of the accommodating groove 222, and when the punch 1 is punched out of the sliding groove 221, a gap still exists between the sheath 211 and the bottom wall of the accommodating groove 222.

Through having gapped setting between sheath 211 and the holding tank 222, the staff can stretch into the staff from the clearance between main promotion portion 21 and the sub promotion portion 22, pour lubricating oil into in the clearance between sheath 211 and the holding tank 222, lubricating oil passes through the clearance between sheath 211 and the holding tank 222, flow in again to between drift 1 and the spout 221, play lubricated effect and cooling effect to drift 1, prevent that drift 1 from because of high-speed blanking, the condition that produces the friction and be heated and lead to drift 1 to warp takes place.

In addition, in order to save the material of the sheath 211, the sheath 211 can be arranged at the middle position of the punch 1 or at the two ends of the punch 1, so that the part of the punch 1 provided with the sheath 211 is limited by the accommodating groove 222, and the part without the sheath 211 can not contact with the inner side wall of the accommodating groove 222 based on the thickness of the sheath 211, and the punch 1 can also be protected.

Referring to fig. 3 and 4, in a possible embodiment, the device further includes an ejector 4, and an accommodating cavity 212 is provided on the main pushing portion 21, and the accommodating cavity 212 is used for accommodating the ejector 4;

the ejector 4 comprises: the connecting portion 41 and the spring 42;

one end of the connecting part 41 is provided with a boss 411, the boss 411 is connected with the spring 42, and the other end of the connecting part 41 extends out of the accommodating cavity 212 and is connected with the sub pushing part 22;

one end of the spring 42 away from the connecting part 41 is connected with the top of the accommodating cavity 212;

after the upper die 2 and the lower die 3 are attached to each other, the upper die continues to move, so that the boss 411 moves upwards, the spring 42 is compressed, and a gap between the main pushing part 21 and the sub pushing part 22 is eliminated.

Referring to fig. 3, the accommodating cavity 212 has a protruding portion therein, so that the protrusion 411 can abut against the protruding portion, and thus the connecting portion 41 connected to the protrusion 411 and the indirectly connected sub-pushing portion 22 can be fixed to each other by the interference between the protrusion 411 and the protruding portion, and the sub-pushing portion 22 cannot be completely separated from the main pushing portion 21. And when the boss 411 abuts on the protruding portion, a gap exists between the main pushing portion 21 and the sub pushing portion 22.

The working process of the ejection part 4 is as follows: when the upper die 2 and the lower die 3 are not attached or the upper die 2 and the lower die 3 are just attached to each other, a gap exists between the main pushing part 21 and the sub pushing part 22, the boss 411 is clamped on a convex part in the accommodating cavity 212, the spring 42 is in a natural state, and the punch 1 is not punched out; after the upper die 2 moves to be attached to the lower die 3, the sub pushing portion 22 moves upward relative to the main pushing portion 21, the gap between the main pushing portion 21 and the sub pushing portion 22 is eliminated, the boss 411 moves upward, that is, moves in a direction away from the protruding portion in the accommodating cavity 212, the spring 42 is compressed, and the punch 1 punches out.

Through the arrangement of the pushing-out piece 4, a gap existing between the main pushing part 21 and the sub pushing part 22 can be eliminated, and when the gap exists between the main pushing part 21 and the sub pushing part 22, the main pushing part 21 and the sub pushing part 22 can be connected.

With reference to fig. 3, in a possible embodiment, the upper die 2 is provided with a blanking punch 5;

and the upper die 2 and the lower die 3 continue to move after being attached, so that the punch 1 and the blanking punch 5 punch out simultaneously, and valve plates on the lower die 3 are processed simultaneously.

The processing process of the processing mould comprises the following steps: when the upper die 2 and the lower die 3 continue to move after being attached, the punch 1 and the blanking punch 5 punch out simultaneously, and strip valve plates 7 on the lower die 3 are processed at different stations. Wherein, the strip valve plate 7 is formed by mutually connecting a plurality of valve plates.

The punch 1 and the blanking punch 5 punch out simultaneously, so that two different valve plates can be processed in different steps at the same time; when the next processing step is carried out, the strip valve plate 7 is directly moved, so that the strip valve plate 7 is processed in a progressive manner, and the processing efficiency of the processing die is improved.

Referring to fig. 2, in a possible embodiment, the upper die 2 is provided with a guide post 6, and the lower die 3 is provided with a guide groove 32;

when the upper mold 2 and the lower mold 3 are attached to each other and then move, the guide post 6 moves along the longitudinal direction of the guide groove 32.

When the upper die 2 and the lower die 3 are attached and then move continuously, the guide column 6 moves towards the direction deep into the guide groove 32, and the guide groove 32 limits the guide column 6, so that the condition that the upper die 2 is not aligned with the lower die 3 after moving is avoided.

It should be understood that while the present specification has described preferred embodiments of the present application, additional variations and modifications of those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

The punch and the stamping die provided by the present application are described in detail above, and specific examples are applied herein to illustrate the principle and the implementation of the present application, and the description of the above examples is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The punch is characterized in that an arc-shaped cutting edge (11) is arranged on the punch (1), and the cutting edge (11) is used for blanking a valve plate so as to machine an arc-shaped hole in the valve plate;

the height difference is arranged between two ends of the cutting edge (11), the cutting edge (11) is inclined, and the horizontal height from one end of the cutting edge (11) to the other end of the cutting edge is gradually increased or decreased.

2. The punch as claimed in claim 1, characterised in that the difference in height between the two ends of the cutting edge (11) is between 0.3mm and 0.4 mm.

3. A press die comprising a punch as claimed in claim 1 or 2, and further comprising: an upper die (2) and a lower die (3);

the upper die (2) is arranged above the lower die (3), and the upper die (2) moves towards the direction close to or away from the lower die (3) under the action of external force; the punch (1) is arranged on the upper die (2) and is in sliding fit with the upper die (2);

the lower die (3) is parallel to the upper die (2) and is used for supporting the valve plate;

the lower die (3) is provided with an arc-shaped groove (31), the arc-shaped groove (31) is aligned with the punch (1), and the arc-shaped groove (31) is used for accommodating the punch (1);

and the upper die (2) and the lower die (3) continue to move after being attached, so that the punch (1) punches out and extends into the arc-shaped groove (31) to punch the valve plate on the lower die (3).

4. Stamping die according to claim 3, characterized in that the upper die (2) comprises: a main pushing part (21) and a sub-pushing part (22);

the main pushing part (21) is positioned above the sub pushing part (22), and the punch (1) is arranged on the main pushing part (21);

the sub-pushing part (22) is parallel to the main pushing part (21), a sliding groove (221) is formed in the sub-pushing part (22), and the sliding groove (221) is in sliding fit with the punch (1);

a gap exists between the main pushing part (21) and the sub pushing part (22);

and the upper die (2) and the lower die (3) continue to move after being attached, and the gap between the main pushing part (21) and the sub pushing part (22) is eliminated, so that the punch (1) is punched out from the bottom of the sliding groove (221).

5. The stamping die according to claim 4, wherein the punch (1) is provided with a sheath (211) and the sub-pushing part (22) is provided with a receiving groove (222);

the sheath (211) is connected with the main pushing part (21), and the sheath (211) is positioned on the outer wall of the punch (1);

the accommodating groove (222) is communicated with the sliding groove (221) and is used for accommodating the sheath (211) and the punch (1), and the accommodating groove (222) is in sliding fit with the sheath (211).

6. The stamping die of claim 5, wherein a gap exists between the sheath (211) and the receiving slot (222).

7. The stamping die according to claim 4, further comprising an ejector (4), wherein the main pushing part (21) is provided with a containing cavity (212), and the containing cavity (212) is used for containing the ejector (4);

the ejector (4) comprises: a connecting portion (41) and a spring (42);

one end of the connecting part (41) is provided with a boss (411), the boss (411) is connected with the spring (42), and the other end of the connecting part (41) extends out of the accommodating cavity (212) and is connected with the sub-pushing part (22);

one end of the spring (42) far away from the connecting part (41) is connected with the top of the accommodating cavity (212);

and the upper die (2) and the lower die (3) continue to move after being attached, so that the boss (411) moves upwards, the spring (42) is compressed, and a gap between the main pushing part (21) and the sub pushing part (22) is eliminated.

8. A stamping die according to claim 3, characterized in that the upper die (2) is provided with a blanking punch (5);

and the upper die (2) and the lower die (3) continue to move after being attached, so that the punch (1) and the blanking punch (5) punch out simultaneously, and valve plates on the lower die (3) are processed simultaneously.

9. The stamping die according to claim 3, wherein the upper die (2) is provided with a guide post (6), and the lower die (3) is provided with a guide groove (32);

when the upper die (2) and the lower die (3) continue to move after being attached, the guide column (6) moves along the length direction of the guide groove (32).