Stamping die capable of preventing waste materials from jumping

Abstract

The stamping die comprises an upper die body and a lower die body, an upper clamping plate and a stripping part are sequentially arranged at the bottom of the upper die body and elastically connected, the upper clamping plate is perpendicularly connected with a punch, the punch perpendicularly penetrates through the stripping part, and a blanking hole matched with the punch is formed in the top of the lower die body. A blocking air pin is arranged in the stripping part and is parallel to the punch, the top of the blocking air pin is elastically connected with the stripping part, the bottom of the blocking air pin protrudes out of the stripping part in the mold opening state, the stripping part is further provided with an air flow channel, an air inlet of the air flow channel is formed in the side wall of the stripping part and used for being communicated with an air source, and the air flow channel flows through the blocking air pin. An air outlet of the airflow channel is close to the blanking hole, and the blocking air pin is configured to be capable of blocking the airflow channel in a mold opening state and capable of vertically moving towards the inner side of the stripping part to enable the airflow channel to be communicated in a mold closing state, so that waste materials can be prevented from jumping by blowing air, and the use of the air is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a waste material jumping prevention stamping die. Background Art

[0002] During the working process of the stamping die, in general, the waste should be clamped in the blanking cavity of the die, and under the push of the subsequent waste, the waste falls from the blanking hole of the die. However, when the adsorption force of the punch on the waste is greater than the clamping force of the blanking cavity of the die on the waste, the waste will jump to the surface of the die as the punch moves upward, which will cause the problem of jumping waste. For example, the surface of the stamped part will be bruised due to the waste, affecting the appearance of the product. For example, the mold may be damaged or the precision of the mold may be reduced due to the waste. In addition, the waste problem also leads to high maintenance frequency and low production efficiency.

[0003] In the prior art, conventional methods for preventing waste skipping include: changing the shape of the waste, changing the order of cutting the waste, etc.; all of the above methods require major changes to the production equipment or production line, and the cost of the transformation is high. Utility Model Content

[0004] The embodiment of the present application provides a waste jumping prevention stamping die, which can continuously blow air toward the blanking hole when the mold is closed to prevent waste jumping, and automatically disconnect the airflow and stop blowing when the mold is opened. It not only has a good anti-waste jumping effect, but also saves gas and can reduce the cost of anti-waste jumping.

[0005] The embodiment of the present application provides an anti-jump waste stamping die, including an upper die and a lower die that cooperate with each other up and down, wherein the bottom of the upper die is sequentially provided with an upper clamping plate and a stripping piece, the upper clamping plate and the stripping piece are elastically connected, the upper clamping plate is vertically connected with a punch, and the punch vertically penetrates the stripping piece, wherein the top of the lower die is provided with a blanking hole that cooperates with the punch, and a blocking air pin is provided in the stripping piece, the blocking air pin is parallel to the punch, the top of the blocking air pin is elastically connected to the stripping piece, and in the mold opening state, the bottom of the blocking air pin protrudes from the stripping piece, and the stripping piece is also provided with an air flow channel, the air inlet of the air flow channel is provided on the side wall of the stripping piece, the air flow channel flows through the blocking air pin, and the air outlet of the air flow channel is close to the blanking hole, and the blocking air pin is configured to: be able to block the air flow channel in the mold opening state, and be able to move vertically toward the inner side of the stripping piece in the mold closing state to connect the air flow channel.

[0006] In one possible implementation, the blocking air pin is a double-headed air pin, including a first end, a pin body and a second end coaxially connected, wherein the outer diameter of the first end is larger than the outer diameter of the second end, and the stripping piece is provided with a T-slot that matches the blocking air pin, wherein the horizontal portion of the T-slot matches the first end, the top of the first end is connected to the top wall of the horizontal portion through an elastic member, and the vertical portion of the T-slot matches the second end, and a first air passage for air passing is formed between the pin body and the vertical portion, and when in the mold closing state, the first end is separated from the bottom wall of the horizontal portion, and the gas flows to the air outlet via the air inlet, the first air passage and the horizontal portion in sequence.

[0007] In a possible implementation manner, the elastic member is implemented as a spring.

[0008] In a possible implementation, the stripping piece includes a back stripping plate and a stripping plate fixedly connected in parallel, wherein the back stripping plate and the upper clamping plate are elastically connected, the horizontal portion is located at the bottom of the back stripping plate, and the vertical portion penetrates the stripping plate in the thickness direction of the stripping plate.

[0009] In a possible implementation, an air die is installed in the stripping plate, and the air die is sleeved on the punch with a clearance fit. The air die is provided with an air outlet channel, and the air outlet channel extends along the axial direction of the punch. The air outlet is the bottom opening of the air outlet channel, and the back stripping plate is provided with a second air outlet channel connecting the horizontal portion and the air outlet channel.

[0010] In one possible implementation, the overpressure mold includes an upper module and a lower module connected up and down in a height direction, the upper module is provided with an L-shaped channel, the L-shaped channel includes an outer vertical groove opened on the outer edge of the upper module and a horizontal groove connected to the bottom end of the outer vertical groove, the top end of the outer vertical groove is connected to the horizontal portion, the lower module is provided with an inner vertical groove on the inner wall near the punch, the top end of the inner vertical groove is connected to the horizontal groove, the bottom end of the inner vertical groove is the air outlet, and the outer vertical groove, the horizontal groove and the inner vertical groove constitute the air outlet channel.

[0011] In a possible implementation, the air inlet is a conical opening, and the caliber of one end of the air inlet close to the blocking air pin is smaller than the caliber of the other end.

[0012] Beneficial effect: Compared with the prior art, the anti-waste jumping stamping die provided by the present application is provided with a blocking air pin that can move elastically in the stripping part, and an air flow channel is opened. When the mold is in the open state, the blocking air pin blocks the air flow channel, and when the mold is in the closed state, the air flow channel is connected. The gas is sprayed from the air outlet to the blanking hole, which can effectively prevent the waste jumping phenomenon, and at the same time can also save the blowing air and reduce the cost of preventing waste jumping.

[0013] These and other purposes, features and advantages of the present invention are fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The schematic diagram of the structure of the anti-jump waste stamping die of the present application when the die is opened is shown.

[0015] Figure 2 The schematic diagram of the structure of the anti-jump waste stamping die of the present application when the die is closed is shown.

[0016] Figure 3 A schematic cross-sectional structure diagram of the anti-jump waste stamping die of the present application is shown.

[0017] Figure 4 A partial three-dimensional structural schematic diagram of the anti-jump waste stamping die of the present application is shown. DETAILED DESCRIPTION

[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0019] Those skilled in the art should understand that, in the disclosure of the specification, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0020] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0021] refer to Figures 1 to 4 The embodiment of the present application provides an anti-jump waste stamping die, which includes an upper die 10 and a lower die 20 that match each other, wherein the bottom of the upper die 10 is sequentially provided with an upper clamping plate 11 and a stripping piece 12, and the upper clamping plate 11 and the stripping piece 12 are elastically connected, and the upper clamping plate 11 is vertically connected with a punch 13, wherein the punch 13 vertically penetrates the stripping piece 12, and correspondingly, the top of the lower die 20 is provided with a blanking hole 201 that matches the punch 13, so that when the die is closed, the stripping piece 12 can be closer to the upper clamping plate 11 and the punch 13 protrudes downward from the stripping piece 12, and the blanking hole 201 is cooperated to complete the stamping of the product, and the waste material punched out falls into the blanking hole 201;

[0022] The key is that a blocking air pin 14 is provided in the stripping piece 12. The blocking air pin 14 is parallel to the punch 13, and the top of the blocking air pin 14 is elastically connected to the stripping piece 12, and in the mold opening state, the bottom of the blocking air pin 14 protrudes from the stripping piece 12. In addition, the stripping piece 12 is also provided with an air flow channel 101, wherein the air inlet 1011 of the air flow channel 101 is provided on the side wall of the stripping piece 12, and the air flow channel 101 flows through the blocking air pin 14, wherein the air outlet 1012 of the air flow channel 101 is close to the blanking hole 201, and the blocking air pin 14 is configured to: block the air flow channel 101 in the mold opening state, and move vertically toward the inner side of the stripping piece 12 in the mold closing state to connect the air flow channel 101. In this way, by blocking the coordination between the air pin 14 and the air flow channel 101 and continuously blowing air toward the blanking hole 201 through the air outlet 1012 when the mold is closed, waste material can be prevented from jumping out. After the mold is opened, the air pin 14 is blocked to block the connection of the air flow channel 101, which can save gas usage and thereby reduce the cost of preventing waste material from jumping out. The air flow channel 101 is automatically blocked or connected by means of an elastic connection, which makes it more convenient to use.

[0023] In one embodiment, the blocking gas pin 14 is a double-headed gas pin, including a first end 141, a pin body 142 and a second end 143 that are coaxially connected, wherein the outer diameter of the first end 141 is larger than the outer diameter of the second end 143, and the stripping piece 12 is provided with a T-slot 102 that matches the blocking gas pin 14, wherein the horizontal portion 1021 of the T-slot 102 matches the first end 141, and the top of the first end 141 is connected to the top wall of the horizontal portion 1021 through an elastic member 144, wherein the elastic member 144 is preferably implemented as a spring, wherein the vertical portion 1022 of the T-slot 102 matches the second end 143, and at the same time, a first air passage 1023 for air passing is formed between the pin body 142 and the vertical portion 1022, that is, the outer diameter of the pin body 142 is smaller than the outer diameter of the second end 143. In the mold closing state, the spring is compressed in the reverse direction, the first end 141 is separated from the bottom wall of the horizontal part 1021, and the gas flows to the gas outlet 1012 through the gas inlet 1011, the first gas passage 1023 and the horizontal part 1021 in sequence, and blows air near the blanking port 201 to prevent waste from jumping out. In addition, the double-headed air pin structure can form part of the air flow channel 101 through the gap between the pin body 142 and the vertical part 1022, and the gap between the first end 141 and the horizontal part 1021, without the need for additional processing of air holes or air grooves, which is easy to use and can also ensure the structural strength of the blocking air pin 14 as much as possible, and has a long service life.

[0024] In one embodiment, the stripping member 12 includes a back stripping plate 121 and a stripping plate 122 which are fixedly connected in parallel, wherein the back stripping plate 121 and the upper clamping plate 11 are elastically connected, and the horizontal portion 1021 is located at the bottom of the back stripping plate 121, and the vertical portion 1022 penetrates the stripping plate 122 in the thickness direction of the stripping plate 122, thereby facilitating the processing and forming of the T-slot 102, and facilitating the installation and subsequent maintenance of the blocking air pin 14.

[0025] Further preferably, an air-passing die 15 is installed in the stripping plate 12, and the air-passing die 15 is sleeved on the punch 12 in a clearance fit manner, and the air-passing die 15 is provided with an air outlet channel 103, wherein the air outlet channel 103 extends along the axial direction of the punch 12, and the air outlet 1012 is the bottom opening of the air outlet channel 103, and the back stripping plate 121 is provided with a second air-passing channel 104 connecting the horizontal portion 1021 and the air outlet channel 103, so as to facilitate the processing and forming of the air outlet channel 103 on the air-passing die 15, and facilitate the maintenance of the air outlet channel 103, in addition, by additionally arranging the air-passing die 15 separately relative to the stripping plate 122, the local strength at the punch 12 can also be improved, thereby ensuring the stability and accuracy of the punch 12.

[0026] Further preferably, the overpressure mold 15 includes an upper module 151 and a lower module 152 connected up and down in the height direction. The upper module 151 is provided with an L-shaped channel. The L-shaped channel includes an outer vertical groove 1031 provided on the outer side of the upper module 151 and a horizontal groove 1032 connected to the bottom end of the outer vertical groove 1031, wherein the top end of the outer vertical groove 1031 is connected to the horizontal portion 1021, and the lower module 152 is provided with an inner vertical groove 1033 on the inner side wall near the punch 12, and the top end of the inner vertical groove 1033 is connected to the horizontal groove 1032, and the bottom end of the inner vertical groove 1033 is connected to the horizontal groove 1032. For the air outlet 1012, the outer vertical groove 1031, the horizontal groove 1032 and the inner vertical groove 1033 constitute the air outlet channel 103. In this way, by opening the outer vertical groove 1031 on the upper module 151 close to the upper side, the structural strength of the upper module 151 can be ensured as much as possible, and by opening the inner vertical groove 1033 on the lower module 152 close to the lower side, the air outlet 1012 can be ensured to be closer to the drop hole 201, which can effectively ensure the effect of preventing waste from jumping.

[0027] In one embodiment, the air inlet 1011 is a conical opening, wherein the diameter of one end of the air inlet 101 close to the blocking air pin 14 is smaller than the diameter of the other end, thereby facilitating the rapid and large-scale introduction of impact-blowing gas from the air source into the air flow channel 101.

[0028] It should be noted that the terms "first, second" in the present application are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0029] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Anti-jump waste stamping die, characterized in that: The cam is configured to have a plurality of camshafts, each of which is adapted to engage with the punch and to engage with the punch to engage with the stripping piece.

2. The anti-jump waste stamping die according to claim 1, characterized in that: The blocking gas pin is a double-headed gas pin, including a first end, a pin body and a second end that are coaxially connected, wherein the outer diameter of the first end is larger than the outer diameter of the second end, and the stripping piece is provided with a T-slot that matches the blocking gas pin, wherein the horizontal portion of the T-slot matches the first end, the top of the first end is connected to the top wall of the horizontal portion through an elastic member, and the vertical portion of the T-slot matches the second end, and a first air passage for air passing is formed between the pin body and the vertical portion, and when in the mold closing state, the first end is separated from the bottom wall of the horizontal portion, and the gas flows to the air outlet via the air inlet, the first air passage and the horizontal portion in sequence.

3. The anti-jump waste stamping die according to claim 2, characterized in that: The elastic element is embodied as a spring.

4. The anti-jump waste stamping die according to claim 2, characterized in that: The stripping piece includes a back stripping plate and a stripping plate which are fixedly connected in parallel, wherein the back stripping plate and the upper clamping plate are elastically connected, the horizontal portion is located at the bottom of the back stripping plate, and the vertical portion penetrates the stripping plate in the thickness direction of the stripping plate.

5. The anti-jump waste stamping die according to claim 4, characterized in that: An air-passing die is installed in the stripping plate, and the air-passing die is sleeved on the punch in a clearance fit manner. The air-passing die is provided with an air outlet channel, and the air outlet channel extends along the axial direction of the punch. The air outlet is the bottom opening of the air outlet channel, and the back stripping plate is provided with a second air-passing channel connecting the horizontal portion and the air outlet channel.

6. The anti-jump waste stamping die according to claim 5, characterized in that: The overpressure mold includes an upper module and a lower module connected up and down along the height direction, the upper module is provided with an L-shaped channel, the L-shaped channel includes an outer vertical groove opened on the outer side edge of the upper module and a horizontal groove connected to the bottom end of the outer vertical groove, the top end of the outer vertical groove is connected to the horizontal part, the lower module is provided with an inner vertical groove on the inner side wall near the punch, the top end of the inner vertical groove is connected to the horizontal groove, the bottom end of the inner vertical groove is the air outlet, and the outer vertical groove, the horizontal groove and the inner vertical groove constitute the air outlet channel.

7. The anti-jump waste stamping die according to claim 1, characterized in that: The air inlet is a conical opening, and the caliber of one end of the air inlet close to the blocking air pin is smaller than the caliber of the other end.

Images