CN217798439U

CN217798439U - Stamping die with pre-pressing function

Info

Publication number: CN217798439U
Application number: CN202220739456.XU
Authority: CN
Inventors: 岳伟; 周俊杰
Original assignee: Ningbo Yinqiu Technology Co ltd
Current assignee: Ningbo Yinqiu Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-11-15
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a die with pre-compaction function belongs to stamping die technical field. It comprises the following steps: the punch cover is provided with a cavity and a first through hole, and the first through hole is arranged at the end part of the punch cover and communicated with the cavity; the prepressing head is positioned in the cavity, penetrates through the first through hole and then extends outwards, and is provided with a second through hole; the punch head extends into the cavity and is connected with the punch head cover, and the punching end of the punch head is inserted into the prepressing head and extends out of the second through hole; and two ends of the compression spring are respectively abutted with the punch and the pre-pressing head. The prepressing head can accurately position the to-be-stamped parts during stamping, the whole stamping process is ensured, the to-be-stamped parts cannot shift all the time, the qualification rate of products is improved, materials are saved, and after the stamping is finished, when the punch leaves the surface of a workpiece, the prepressing head is still pressed on the workpiece, so that the workpiece is prevented from moving upwards along with the punch, the workpiece is not required to be manually taken down from the punch, and the working efficiency is improved.

Description

Stamping die with prepressing function

Technical Field

The utility model belongs to the technical field of stamping die, concretely relates to die with pre-compaction function.

Background

When the existing punching die is used for punching, due to the lack of a pre-pressing function, the workpiece after punching has the problem of low qualification rate due to the fact that the workpiece cannot be accurately positioned in the punching process, and the workpiece is required to be manually taken down along with the punch after punching to influence the working efficiency.

Disclosure of Invention

The utility model discloses an to the above-mentioned problem that prior art exists, provided one kind and can treated stamping workpiece accurate positioning, avoided the work after the punching press along with the punch rebound die with pre-compaction function.

The utility model discloses the accessible is realized by following technical scheme:

a die having a pre-pressing function, comprising:

the punch cover is provided with a cavity and a first through hole, and the first through hole is arranged at the end part of the punch cover and is communicated with the cavity;

the pre-pressing head is positioned in the cavity, penetrates through the first through hole and then extends outwards, and is provided with a second through hole;

the punch head extends into the cavity and is connected with the punch head cover, and the punching end of the punch head is inserted into the prepressing head and extends out of the second through hole;

and two ends of the compression spring are respectively abutted with the punch and the pre-pressing head.

As a further improvement of the present invention, the cavity includes a first cavity and a second cavity, the first through hole communicates with the first cavity and the second cavity in sequence, the diameter of the first cavity is smaller than that of the second cavity.

As a further improvement, the pre-pressing head includes first connecting portion and pre-pressing portion, first connecting portion with pre-pressing portion connects and forms the turriform structure, first connecting portion are located in the first cavity and with the inner wall clearance fit of punching head lid, pre-pressing portion is followed first through-hole department outwards stretches out.

As a further improvement, the first connecting portion is kept away from the terminal surface of splenium one end is equipped with the chamfer in advance.

As the utility model discloses a further improvement, the drift is the setting of step shaft column structure and including the second connecting portion, transition portion and the punching press portion that connect gradually, the second connecting portion are located in the second cavity and with the inner wall threaded connection of drift lid, the transition portion inserts in the head of prepressing, punching press portion passes the second through-hole is outwards stretched out.

As a further improvement of the utility model, first connecting portion with leave the clearance between the second connecting portion, first connecting portion are equipped with a plurality of blind holes, compression spring installs in the blind hole just compression spring's both ends respectively with first connecting portion and second connecting portion butt.

As a further improvement of the present invention, the transition portion is in transition with through the conical surface between the punching press portion, be equipped with in the prepressing portion with conical surface matched with annular inclined plane.

As a further improvement of the utility model, be equipped with the screw hole that is used for connecting outside press in the second connecting portion.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the pre-pressing head can accurately position the to-be-stamped parts during stamping, so that the to-be-stamped parts can not shift and keep the position accuracy of the to-be-stamped parts all the time in the whole stamping process, the qualification rate of products is improved, and materials are saved.

2. After the punching operation is finished, when the whole punching die is reset upwards, only the punching head and the punching head cover move upwards in the first section of stroke, and the prepressing head is popped downwards under the action of the spring force, namely, when the punching head leaves the surface of a workpiece, the prepressing head is still pressed on the workpiece, so that the workpiece is prevented from moving upwards along with the punching head, the workpiece is not required to be manually taken down from the punching head, and the working efficiency is improved.

3. Transition through the circular conical surface between transition portion and the punching press portion, be equipped with in the pre-compaction portion with circular conical surface matched with annular inclined plane, avoid the punching press in-process from this, because the problem that bumps and damage takes place between the transition portion of drift and the pre-compaction portion of pre-compaction head ensures that punching press work goes on smoothly to the life of die has been improved.

Drawings

Fig. 1 is a schematic structural diagram of the die with the pre-pressing function of the present invention.

In the figure, 100, the punch cover; 110. a first through hole; 120. a first cavity; 130. a second cavity; 200. pre-pressing a head; 210. a second through hole; 220. a first connection portion; 221. chamfering; 222. a gap; 223. blind holes; 230. a prepressing section; 300. a punch; 310. a second connecting portion; 311. a threaded hole; 320. a transition portion; 330. a punching part; 400. compressing the spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the utility model provides a die with pre-compaction function, include:

a punch cover 100 provided with a cavity and a first through-hole 110, the first through-hole 110 being provided at an end of the punch cover 100 and communicating with the cavity.

The pre-pressing head 200 is positioned in the cavity and extends outwards after passing through the first through hole 110, and the pre-pressing head 200 is provided with a second through hole 210.

And a punch 300 extending into the cavity and connected to the punch cover 100, wherein a punching end of the punch 300 is inserted into the pre-pressing head 200 and extends outward from the second through hole 210.

The two ends of the compression spring 400 are respectively abutted against the punch 300 and the prepressing head 200, specifically, when punching is performed, an external press machine pushes the whole punching die to press down, at the moment, the prepressing head 200 slides downwards between the punch cover 100 and the punch 300 under the pushing of the compression spring 400, the lower end of the prepressing head 200 is firstly contacted with a part to be punched and presses down the part to be punched, the part to be punched is firstly positioned, and prepressing force is applied to the positioned part to be punched, so that the part to be punched in the whole punching process is always kept at a fixed position, and the due position precision is further kept; then the punch 300 continues to move downwards and protrudes out of the pre-pressing head 200 to press the part to be pressed, and at the moment, the compression spring 400 is compressed to be the shortest and the pre-pressing force is the largest; after the punching is finished, the whole prepressing die is moved upwards, at the moment, the compression spring 400 is gradually extended, the prepressing force of the part to be punched is gradually reduced, a certain pressure is still kept on the punched part, the part to be punched is prevented from moving upwards along with the prepressing die, namely, the prepressing head can be separated from the part to be punched later than the punching head 300 under the action of the compression spring 400, and therefore the prepressing function of the whole punching die is achieved;

in the embodiment, the punching die has the pre-pressing function, so that the pre-pressing head 200 can accurately position the to-be-punched piece during punching, and the to-be-punched piece is ensured not to shift all the time in the whole punching process, thereby improving the qualification rate of products and saving materials;

in addition, because the compression spring 400 is in a compressed state in the punching process, when the whole die is reset upwards after the punching operation is finished, only the punch 300 and the punch cover 100 move upwards in the first stroke, and the prepressing head 200 is popped downwards under the action of the spring force, that is, when the punch 300 leaves the surface of the workpiece, the prepressing head 200 is still pressed on the workpiece, so that the situation that the workpiece moves upwards along with the punch 300 is avoided, the workpiece is not required to be manually taken down from the punch 300, and the working efficiency is improved.

Preferably, the cavity includes a first cavity 120 and a second cavity 130, the first through hole 110, the first cavity 120 and the second cavity 130 are sequentially communicated, and the diameter of the first cavity 120 is smaller than that of the second cavity 130.

Preferably, the pre-pressing head 200 includes a first connection portion 220 and a pre-pressing portion 230, the first connection portion 220 is connected with the pre-pressing portion 230 and forms a tower-shaped structure, the first connection portion 220 is located in the first cavity 120 and is in clearance fit with an inner wall 222 of the punch cover 100, and the pre-pressing portion 230 protrudes outwards from the first through hole 110, wherein the pre-pressing portion 230 is used for pre-pressing the to-be-pressed piece in place during the punching process, and in an initial stage of the upward resetting of the die, the to-be-pressed piece is still pre-pressed, so that the to-be-pressed piece is prevented from moving upwards along with the punch 300.

Preferably, the end surface of the first connecting portion 220, which is far from the end of the prepressing portion 230, is provided with a chamfer 221, and the chamfer 221 is used for guiding the punch 300 during installation, so that the punch 300 can be smoothly inserted into the prepressing head 200.

Preferably, the punch 300 is arranged in a stepped shaft-shaped structure and includes a second connecting portion 310, a transition portion 320 and a punching portion 330, which are connected in sequence, the second connecting portion 310 is located in the second cavity 130 and is in threaded connection with the inner wall of the punch cover 100, the transition portion 320 is inserted into the pre-pressing head 200, and the punching portion 330 passes through the second through hole 210 and extends outwards, wherein the transition portion 320 and the pre-pressing head 200 are in clearance 222 fit, and simultaneously, because the pre-pressing head 200 and the inner wall of the punch cover 100 are also in clearance 222 fit, the pre-pressing head 200 can move up and down, and the foremost end of the punching portion 330 is the punching end of the whole punch 300, and the punching end is formed by combining a top end arc and a conical surface, so as to rivet the shaft.

Preferably, a gap 222 for the vertical movement of the pre-pressing head 200 is left between the upper end surface of the first connecting portion 220 and the lower end surface of the second connecting portion 310, the first connecting portion 220 is provided with a plurality of blind holes 223, the compression spring 400 is installed in the blind holes 223, and two ends of the compression spring 400 are respectively abutted against the first connecting portion 220 and the second connecting portion 310, so that when the pre-pressing head 200 performs pre-pressing, the pre-pressing head 200 can vertically move in the gap 222 and compress the compression spring 400, thereby realizing the pre-pressing function of the whole die.

Preferably, the transition part 320 and the punching part 330 are in transition through a conical surface, and an annular inclined surface matched with the conical surface is arranged in the prepressing part 230, so that the problem that the transition part 320 of the punch 300 and the prepressing part 230 of the prepressing head 200 are damaged due to collision in the punching process is avoided, the smooth punching operation is ensured, and the service life of the die is prolonged.

Preferably, a screw hole 311 for connecting an external press is provided in the second connecting portion 310, and the press is connected to the punch 300 through the screw hole 311, thereby performing a subsequent pressing operation.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics. The above is a detailed implementation manner of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions of the embodiments as "first," "second," "a," etc. in this disclosure are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of the indicated features is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A die having a pre-pressing function, comprising:

the punch cover is provided with a cavity and a first through hole, and the first through hole is arranged at the end part of the punch cover and communicated with the cavity;

2. The die with the pre-pressing function as claimed in claim 1, wherein the cavity includes a first cavity and a second cavity, the first through hole, the first cavity and the second cavity are sequentially communicated, and a diameter of the first cavity is smaller than a diameter of the second cavity.

3. The die with the prepressing function according to claim 2, wherein the prepressing head comprises a first connecting part and a prepressing part, the first connecting part is connected with the prepressing part and forms a tower-shaped structure, the first connecting part is positioned in the first cavity and is in clearance fit with the inner wall of the punch cover, and the prepressing part extends out of the first through hole.

4. The die with the prepressing function according to claim 3, wherein an end face of the first connecting part, which is far away from the prepressing part, is provided with a chamfer.

5. The die with the pre-pressing function as claimed in claim 3, wherein the punch is arranged in a stepped shaft-like structure and includes a second connecting portion, a transition portion and a punching portion, the second connecting portion is located in the second cavity and is in threaded connection with an inner wall of the punch cover, the transition portion is inserted into the pre-pressing head, and the punching portion passes through the second through hole and protrudes outwards.

6. The die with the pre-pressing function as claimed in claim 5, wherein a gap is left between the first connecting portion and the second connecting portion, the first connecting portion is provided with a plurality of blind holes, the compression spring is installed in the blind holes, and two ends of the compression spring abut against the first connecting portion and the second connecting portion respectively.

7. The die with the pre-pressing function as claimed in claim 5, wherein the transition portion and the punching portion are transitioned through a conical surface, and an annular inclined surface matched with the conical surface is arranged in the pre-pressing portion.

8. The die with the pre-pressing function as claimed in claim 7, wherein a threaded hole for connecting an external press is formed in the second connecting portion.