CN219093362U

CN219093362U - Stamping die

Info

Publication number: CN219093362U
Application number: CN202223416930.4U
Authority: CN
Inventors: 肖航; 廖孟军; 戴月; 旷连虎
Original assignee: Beijing Chehejia Automobile Technology Co Ltd
Current assignee: Beijing Chehejia Automobile Technology Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-30
Anticipated expiration: 2032-12-20

Abstract

The application provides a stamping die for the punching press is processed the part, is processed the part and includes the through-hole, and stamping die includes mould and bed die. The upper die comprises a first positioning part, and the first positioning part comprises a positioning hole; the lower die comprises a bearing plate and a second positioning part arranged on the bearing plate, the second positioning part comprises a positioning piece and a second ejection pin, the positioning piece protrudes out of the bearing plate along the thickness direction of the bearing plate, and the second ejection pin is telescopic along the thickness direction. The upper die and the lower die are in a buckling state, the positioning piece can position the machined part and the upper die, the upper die and the lower die are in a separation state, the pressure acting on the second ejection pin disappears, the second ejection pin protrudes out of the bearing plate and can lift the machined part, and a certain gap is reserved between the machined part and the stamping surface of the lower die. The operator can separate the machined part and the lower die through the gap.

Description

Stamping die

Technical Field

The application relates to the technical field of vehicles, in particular to a stamping die.

Background

Stamping is a press working method in which a material is pressed at room temperature by a die mounted on a press to be separated or plastically deformed, thereby obtaining a desired part. The stamping die is a process equipment for processing a material into a part or a semi-finished product in cold stamping processing.

In the prior art stamping die, the upper die and the lower die are pressed together to stamp the part, and when the upper die and the lower die are separated to take out the part, it is difficult to take out the part from the lower die because the part is closely attached to the lower die at this time.

Based on this, the present application provides a stamping die.

Disclosure of Invention

The stamping die provided by the application can be used for conveniently demoulding the machined part.

An embodiment of an aspect of the present application provides a stamping die for stamping a part to be processed, the part to be processed including a through hole, the stamping die including: the upper die comprises a first positioning part, and the first positioning part comprises a positioning hole; the lower die comprises a bearing plate and a second positioning part arranged on the bearing plate, the second positioning part comprises a positioning piece and a second ejection pin, the positioning piece protrudes out of the bearing plate along the thickness direction of the bearing plate, and the second ejection pin is telescopic along the thickness direction; the upper die and the lower die can be switched between a buckling state and a separation state; in the buckling state, the second ejection pin is contracted into the bearing plate, and the positioning piece can pass through the through hole and is inserted into the positioning hole; in the separated state, the positioning piece is separated from the positioning hole, and the second ejection pin stretches out and protrudes out of the bearing plate, so that a gap is formed between the processed part and the bearing plate.

According to any one of the foregoing embodiments in one aspect of the present application, the positioning member includes a first connecting section and a second connecting section, the second connecting section is connected with the bearing plate and the first connecting section, respectively, along a thickness direction and toward a side facing away from the second connecting section, and a cross-sectional area of the first connecting section gradually decreases.

According to any one of the preceding embodiments in one aspect of the present application, the height of the second ejection pin is greater than the extension length of the second connection section and less than the extension lengths of the first connection section and the second connection section in the thickness direction.

According to any of the foregoing embodiments of one aspect of the present application, the first connecting section is a cone, the second connecting section is a cylinder, and a bottom surface of the cone is connected to a bottom surface of the cylinder.

According to any one of the foregoing embodiments in one aspect of the present application, the number of the first positioning portions is plural, the number of the second positioning portions is plural, the first positioning portions and the second positioning portions are disposed in one-to-one correspondence, one second positioning portion includes a plurality of second ejection pins, and the plurality of second ejection pins are disposed around the positioning member at intervals.

According to any one of the preceding embodiments in one aspect of the present application, the second positioning portion includes two or more second ejection pins, and the two or more second ejection pins are spaced around the positioning member.

According to any one of the foregoing embodiments, the first positioning portion further includes two or more first ejection pins, and the two or more first ejection pins are distributed at intervals around the positioning hole.

According to any one of the preceding embodiments in one aspect of the present application, the radial dimension of the first ejection pin is greater than the dimension of the second ejection pin in the thickness direction.

According to any one of the foregoing embodiments of the aspect of the present application, the bearing plate includes a main body portion and an extension portion that are connected, the thickness of the extension portion is smaller than that of the main body portion, the extension portion is flush with one side of the main body portion in the thickness direction thereof, and the second positioning portion is disposed on the extension portion.

According to any of the foregoing embodiments in one aspect of the present application, the surface of the second ejection pin for contacting the part to be machined is arcuate.

The stamping die is used for stamping a machined part, the machined part comprises a through hole, and the stamping die comprises an upper die and a lower die. The upper die comprises a first positioning part, and the first positioning part comprises a positioning hole; the lower die comprises a bearing plate and a second positioning part arranged on the bearing plate, the second positioning part comprises a positioning piece and a second ejection pin, the positioning piece protrudes out of the bearing plate along the thickness direction of the bearing plate, and the second ejection pin is telescopic along the thickness direction; the upper die and the lower die can be switched between a closed state and a separated state. In the buckling state, the positioning piece can position the machined part and the upper die, in the separation state, the pressure acting on the second ejection pin disappears, and the second ejection pin protrudes out of the bearing plate and can lift the machined part, so that a certain gap is formed between the machined part and the stamping surface of the lower die. The operator can separate the machined part and the lower die through the gap.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an upper mold according to an embodiment of the present application;

fig. 2 is a schematic structural view of a first positioning portion according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a lower mold according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a second positioning portion according to an embodiment of the present application.

Reference numerals illustrate:

1. an upper die; 11. a first positioning portion; 111. positioning holes; 112. a first ejection pin; 12. a pressing plate;

2. a lower die; 21. a pressure bearing plate; 211. a main body portion; 212. an extension;

22. a second positioning portion; 221. a positioning piece; 221a, a first connection section; 221b, a second connection section; 222. a second ejection pin; 23. a connection hole;

x, thickness direction of bearing plate.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For a better understanding of the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-4 together, fig. 1 is a schematic structural diagram of an upper mold according to an embodiment of the present application; fig. 2 is a schematic structural view of a first positioning portion according to an embodiment of the present application; fig. 3 is a schematic structural diagram of a lower mold according to an embodiment of the present disclosure; fig. 4 is a schematic structural diagram of a second positioning portion according to an embodiment of the present application.

In one aspect, an embodiment of the present application provides a stamping die for stamping a part to be processed, the part to be processed including a through hole, the stamping die including an upper die 1 and a lower die 2. The upper die 1 includes a first positioning portion 11, the first positioning portion 11 including a positioning hole 111; the lower die 2 comprises a bearing plate 21 and a second positioning part 22 arranged on the bearing plate 21, the second positioning part 22 comprises a positioning piece 221 and a second ejection pin 222, the positioning piece 221 protrudes out of the bearing plate 21 along the thickness direction X of the bearing plate 21, and the second ejection pin 222 is telescopic along the thickness direction X; the upper die 1 and the lower die 2 can be switched between a closed state and a separated state; in the buckled state, the second ejection pin 222 is contracted into the bearing plate 21, and the positioning piece 221 can pass through the through hole and be inserted into the positioning hole 111; in the separated state, the positioning piece 221 is separated from the positioning hole 111, and the second ejection pin 222 extends and protrudes from the bearing plate 21, so that the machined part forms a gap with the bearing plate 21.

In the fastened state, the part to be processed is placed between the upper die 1 and the lower die 2, and the positioning member 221 passes through the through hole and is inserted into the positioning hole 111 to position the part to be processed and the upper die 1. The operator applies pressure to the stamping die to stamp the part to be machined, and the second ejector pin 222 is contracted by the pressure into the pressure receiving plate 21.

After the punching is completed, the upper die 1 and the lower die 2 are separated, and at this time, the pressure acting on the second ejection pin 222 is lost, and the second ejection pin 222 lifts the part to be processed so that a certain gap is provided between the part to be processed and the punching surface of the lower die 2. In this way, in the separation state, the gap between the machined part and the lower die 2 can enable an operator to apply acting force to the machined part better, so that the machined part can be taken out of the lower die 2 more conveniently and rapidly, and the continuity of machining of the machined part by the stamping die is improved.

Optionally, the lower die 2 further includes a connection hole 23, and the second ejection pin 222 is disposed in the connection hole 23. The second ejection pin 222 may include an elastic member connected with a support rod for supporting the part to be processed, and in case that no punching force is applied, a portion of the second ejection pin 222 protrudes out of the connection hole 23, at this time, the part to be processed placed on the lower die 2 may abut against the support rod, and the elastic force of the elastic member may support the part to be processed and raise the part to be processed. When the operator presses the workpiece with pressure, the second ejection pin 222 is compressed into the connection hole 23 by the pressure.

Alternatively, the stamping die may be used to stamp the hood of a vehicle, and the shapes of the upper die 1 and the lower die 2 are adapted to the shape of the hood.

Alternatively, one second detent 22 may include one or more second ejection pins 222.

In some alternative embodiments, the positioning member 221 includes a first connection section 221a and a second connection section 221b, the second connection section 221b being connected to the bearing plate 21 and the first connection section 221a, respectively, and the cross-sectional area of the first connection section 221a gradually decreases along the thickness direction X and toward a side facing away from the second connection section 221 b.

In these alternative embodiments, the cross-sectional area of the first connecting section 221a decreases gradually in a direction away from the second connecting section 221b, and as the part to be processed passes through the first connecting section 221a, the first connecting section 221a may guide the part to be processed so that the part to be processed passes through the first connecting section 221a more smoothly and is sleeved on the second connecting section 221 b.

When the part to be machined is placed on the lower die 2, the part to be machined may be stuck on the first connecting section 221a, and thus the second connecting section 221b cannot efficiently position the part to be machined. In this case, the stamped part may deform or otherwise not meet the desired dimensional requirements.

In some alternative embodiments, the height of the second ejection pin 222 is greater than the extension length of the second connection section 221b and less than the extension lengths of the first connection section 221a and the second connection section 221b in the thickness direction X.

In these alternative embodiments, the second ejection pin 222 provides a supporting force to the part to be machined when the part to be machined is placed on the lower die 2, so that the part to be machined is disposed around the first connecting section 221a without jamming with the first connecting section 221 a. As the second ejection pin 222 is compressed by the pressing force, the machined part is effectively positioned at the second connecting section 221b, so that the precision of the machined part can be improved.

In some alternative embodiments, the first connection section 221a is a cone, and the second connection section 221b is a cylinder, and the bottom surface of the cone is connected to the bottom surface of the cylinder.

In these alternative embodiments, the part being machined may be moved onto the cylinder along the outer surface of the cone, the first connection section 221a may guide the part being machined, and the second connection section 221b may position the part being machined.

In some alternative embodiments, the number of the first positioning portions 11 is plural, the number of the second positioning portions 22 is plural, the first positioning portions 11 and the second positioning portions 22 are disposed in one-to-one correspondence, one second positioning portion 22 includes a plurality of second ejection pins 222, and the plurality of second ejection pins 222 are disposed around the positioning member 221 at intervals.

In these alternative embodiments, the first positioning portion 11 and the second positioning portion 22 are provided correspondingly to position the part to be machined, and the stamping accuracy of the stamping die to the part to be machined is improved. The plurality of second ejection pins 222 spaced around the positioning member 221 can improve the support force exerted by the second ejection pins 222 on the workpiece to be machined more uniformly.

In some alternative embodiments, the second positioning portion 22 includes two or more second ejection pins 222, the two or more second ejection pins 222 being spaced around the positioning member 221.

In these alternative embodiments, the number of the second ejection pins 222 may be two, and the two second ejection pins 222 are symmetrically distributed with respect to the positioning member 221, so that the supporting forces applied by the two second ejection pins 222 to the machined part may be more balanced.

In some alternative embodiments, the first positioning portion 11 further includes two or more first ejection pins 112, and the two or more first ejection pins 112 are spaced around the positioning hole 111.

In these alternative embodiments, the number of the first ejection pins 112 may be two, and the two first ejection pins 112 are symmetrically distributed with respect to the positioning hole 111, so that the acting force exerted by the first ejection pins 112 on the machined part may be more balanced.

Optionally, the upper die 1 further includes a pressing plate 12, the first positioning portion 11 is connected to the pressing plate 12, and when the upper die 1 and the lower die 2 are not pressed, two first ejection pins 112 protrude in a thickness direction of the pressing plate 12. When the upper die 1 is placed on a machined part, the first ejection pins 112 are abutted against the machined part before the pressing plate 12, the two first ejection pins 112 are arranged opposite to the two second ejection pins 222, the acting force applied by the first ejection pins 112 to the machined part is transmitted to the second ejection pins 222, and the second ejection pins 222 are compressed into the connecting holes 23. So that the part being machined is effectively positioned onto the positioning member 221. When the operator applies pressure to the press mold, the first ejector pin 112 is compressed when the upper mold 1 and the lower mold 2 are pressed together.

In some alternative embodiments, the radial dimension of the first ejection pin 112 is greater than the dimension of the second ejection pin 222 in the thickness direction X. As such, when the upper die 1 is placed on the lower die 2, the first ejection pin 112 may compress the second ejection pin 222.

Alternatively, the radial dimension of the first ejection pin 112 may be M16 and the radial dimension of the second ejection pin 222 may be M8.

In some alternative embodiments, the bearing plate 21 includes a main body 211 and an extension 212 connected to each other, the thickness of the extension 212 is smaller than that of the main body 211, the extension 212 is flush with one side of the main body 211 in the thickness direction thereof, and the second positioning portion 22 is disposed on the extension 212.

In these alternative embodiments, the part to be machined is pressed into contact with the main body 211 and the extension 212, so that the second positioning portion 22 provided on the extension 212 can position the part to be machined.

Alternatively, the extension 212 may be U-shaped.

In some alternative embodiments, the surface of the second ejection pin 222 that is used to contact the part being machined is arcuate. The arcuate surface reduces deformation of the second ejection pin 222 when it abuts the part being machined.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any equivalent modifications or substitutions will be apparent to those skilled in the art within the scope of the present application, and these modifications or substitutions should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A stamping die for stamping a part to be processed, the part to be processed including a through hole, the stamping die comprising:

the upper die comprises a first positioning part, wherein the first positioning part comprises a positioning hole;

the lower die comprises a bearing plate and a second positioning part arranged on the bearing plate, the second positioning part comprises a positioning piece and a second ejection pin, the positioning piece protrudes out of the bearing plate along the thickness direction of the bearing plate, and the second ejection pin is telescopic along the thickness direction;

the upper die and the lower die can be switched between a buckling state and a separation state;

in the buckling state, the second ejection pin is contracted into the bearing plate, and the positioning piece can pass through the through hole and is inserted into the positioning hole;

in the separated state, the positioning piece is separated from the positioning hole, and the second ejection pin stretches out and protrudes out of the bearing plate, so that a gap is formed between the machined part and the bearing plate.

2. The stamping die of claim 1, wherein the positioning member comprises a first connecting section and a second connecting section, the second connecting section being connected to the bearing plate and the first connecting section, respectively, the cross-sectional area of the first connecting section gradually decreasing along the thickness direction and toward a side facing away from the second connecting section.

3. The stamping die of claim 2, wherein a height of the second ejection pin is greater than an extension length of the second connecting section and less than an extension length of the first connecting section and the second connecting section in the thickness direction.

4. The stamping die of claim 2, wherein the first connecting section is a cone and the second connecting section is a cylinder, and wherein a bottom surface of the cone is connected to a bottom surface of the cylinder.

5. The stamping die of claim 1, wherein the number of first positioning portions is plural, the number of second positioning portions is plural, the first positioning portions and the second positioning portions are arranged in one-to-one correspondence, one of the second positioning portions includes a plurality of second ejection pins, and a plurality of second ejection pins are arranged around the positioning member at intervals.

6. The stamping die of claim 1, wherein the second locating portion comprises two or more of the second ejection pins spaced around the locating member.

7. The stamping die of claim 6, wherein the stamping die comprises a plurality of stamping dies,

the first positioning part further comprises more than two first ejection pins, and the more than two first ejection pins are distributed at intervals around the positioning holes.

8. The stamping die of claim 7, wherein a radial dimension of the first ejection pin is greater than a dimension of the second ejection pin in the thickness direction.

9. The stamping die of claim 1, wherein the bearing plate comprises a main body part and an extension part which are connected, the thickness of the extension part is smaller than that of the main body part, the extension part is flush with one side of the main body part in the thickness direction, and the second positioning part is arranged on the extension part.

10. The press die according to any one of claims 1 to 9, wherein a surface of the second ejection pin for contacting the part to be processed is an arcuate surface.