Stripping structure of sizing die

Abstract

The sizing die stripping structure comprises an upper die base, a female die, a lower die plate and a lower die base, the female die is connected to the bottom of the upper die base, a sizing cavity is formed in the bottom of the female die, square limiting cavities are symmetrically formed in the two sides of the sizing cavity, elastic swing blocks are arranged in the limiting cavities, and in the initial state, the elastic swing blocks extend in the vertical direction; the upper portion of the elastic swing block is kept hinged to the female die, the lower portion of the elastic swing block elastically abuts against the inner side wall of the limiting cavity in a pressed mode, and a stripping hook extending towards the inner side is arranged at the bottom of the elastic swing block. The lower die plate is connected to the top of the lower die base, a shaping punch matched with the shaping cavity is installed in the lower die plate, a stripping block capable of directionally moving up and down is arranged on the outer side, protruding out of the lower die plate, of the shaping punch, a boss matched with the stripping hook is arranged on the top of the stripping block, and the bottom of the stripping block is connected with the lower die plate through an equal-height piece. And the upward moving stroke of the stripping block is limited. The stripping structure of the sizing die is simple in structure and easy to debug and install on site.

Description

Technical Field

[0001] The utility model relates to the technical field of stripping structures, in particular to a stripping structure for a shaping die. Background Art

[0002] Shaping refers to using a shaping die to press the inaccurate parts of a bent or stretched part into an accurate shape; or for stamping parts that require surface flatness, using a leveling die to flatten flat stamping parts with arches and warps. That is, relying on the flow of materials, the shape and size of the process parts are slightly changed to ensure the accuracy of the workpiece, which belongs to the forming process of stamping parts.

[0003] After rough stretching, the stretched parts need to be reshaped by a shaping die to improve the shape and size of the product. Conventional shaping dies require the main spring of the upper die to first press the stripper plate down, so that the shaping punch is introduced into the product cavity, and then closed with the concave die to achieve the effect of shaping the product.

[0004] In order to ensure that the punch is introduced into the product cavity first and the die does not damage the product during the pressing process of the upper die, this kind of mold structure needs to arrange a main spring in the upper die and a stripping spring in the lower die. The elastic force of the upper die main spring needs to be greater than the elastic force of the lower die stripping spring. The structure is relatively complex and it is difficult to adjust the mold on site. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the utility model provides a shaping die stripping structure, comprising an upper die seat, a concave die, a lower die plate and a lower die seat, wherein the concave die is fixedly connected to the bottom of the upper die seat, the concave die is provided with a shaping cavity at the bottom, and square limit cavities are symmetrically provided on both sides of the shaping cavity, an elastic swing block is provided in the limit cavity, in an initial state, the elastic swing block extends in a vertical direction, the upper part of the elastic swing block is hinged with the concave die through a side away from the shaping cavity, the lower part of the elastic swing block elastically abuts against a side of the limit cavity close to the shaping cavity in a compressed manner, and a stripping hook extending toward a side close to the shaping cavity is provided at the bottom of the elastic swing block;

[0006] The lower template is fixedly connected to the top of the lower die base, and a shaping punch matching the shaping cavity is installed in the lower template. The shaping punch is provided with a stripping block that can be directed to move up and down on the outer side protruding from the lower template. The top of the stripping block is surrounded by a boss matching the stripping hook on the outer peripheral side, and the bottom of the stripping block is connected to the lower template by an equal height part to limit the upward movement of the stripping block.

[0007] According to an embodiment of the utility model, the horizontal cross-section of the shaping cavity is a rectangle, there are four limiting cavities, and every two limiting cavities are symmetrically distributed on both sides of the length direction of the shaping cavity.

[0008] According to an embodiment of the utility model, a limit block is fixedly installed in the limit cavity, a hinge protrusion is arranged on the upper part of the limit block on a side close to the shaping cavity, a hinge groove matching with the hinge protrusion is arranged on the upper part of the elastic swing block, and a avoidance notch is arranged on a side of the elastic swing block close to the shaping cavity, and in the horizontal direction, the avoidance notch is located above the hinge groove;

[0009] A spring is installed in the limiting cavity below the hinge protrusion, and the spring is horizontally elastically connected between the outer side wall of the elastic pendulum block and the side wall of the limiting cavity away from the shaping cavity in a compressed manner.

[0010] According to an embodiment of the utility model, the spring horizontally penetrates the limit block in a clearance fit manner.

[0011] According to one embodiment of the utility model, the contour part includes a guide portion and a limiting portion arranged at the lower portion of the guide portion and protruding circumferentially, the lower mold plate is provided with a guide channel for the guide portion to move up and down, the limiting portion is located below the lower mold plate and protrudes circumferentially from the guide channel, and a travel space for the limiting portion to move up and down is provided in the lower mold base.

[0012] According to one embodiment of the utility model, the contour part includes a screw threadedly connected to the shaping punch and a T-shaped contour sleeve fixedly sleeved on the surface of the screw, the sleeve of the T-shaped contour sleeve constitutes the guide portion, and the sleeve abuts against the bottom of the lower template at one end and against the nut of the screw at the other end, and the limit head of the T-shaped contour sleeve constitutes the limit portion.

[0013] Beneficial effect: In the shaping mold stripping structure provided by the present application, the elastic swing block will overcome the elastic extrusion force during the mold closing process to make the stripping hook pass over the boss on the stripping block, and then reset again under the elastic action. When the shaping is completed and the mold is opened, the elastic force will continue to squeeze the lower part of the elastic swing block, so that the stripping hook of the elastic swing block will hook the boss in the circumferential direction and drive the stripping block to move upward, completing automatic stripping. The upward movement of the stripping block is limited by equal height parts, so that the stripping hook can be separated from the stripping block, and then the stripping block falls back to the initial position due to its own weight. The overall structure is simple, which can not only complete automatic stripping, but also facilitate on-site debugging and installation.

[0014] These and other purposes, features and advantages of the present invention are fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic cross-sectional view of a shaping die stripping structure according to a preferred embodiment of the present application is shown.

[0016] Figure 2 A schematic cross-sectional view of a stripping structure of a shaping mold in a preferred embodiment of the present application during mold closing is shown.

[0017] Figure 3 A partial structural schematic diagram of a shaping mold stripping structure according to a preferred embodiment of the present application is shown.

[0018] Figure 4 A schematic diagram of the structure of the concave mold in the present application is shown as seen from above. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] refer to Figures 1 to 4, a shaping die stripping structure according to a preferred embodiment of the utility model will be described in detail below, wherein the shaping die stripping structure includes an upper die base 10, a die 20, a lower die plate 30 and a lower die base 40, wherein the die 20 is fixedly connected to the bottom of the upper die base 10, and the die 20 is provided with a shaping cavity 201 at the bottom, and square limiting cavities 202 are symmetrically provided on both sides of the shaping cavity 201. Preferably, the horizontal cross-section of the shaping cavity 201 is rectangular, and there are four limiting cavities 202, and every two limiting cavities 202 are symmetrically distributed on both sides of the length direction of the shaping cavity 201, that is, there are two on each side, and the limiting cavities 202 on both sides are symmetrically distributed with each other, and the limiting cavities 202 on the same side are also symmetrically distributed. An elastic pendulum block 50 is arranged in the limiting cavity 202. In the initial state, the elastic pendulum block 50 extends in the vertical direction. At the same time, the upper part of the elastic pendulum block 50 is hinged to the die 20 through the side away from the shaping cavity 201, and the lower part of the elastic pendulum block 50 elastically abuts against the side of the limiting cavity 202 close to the shaping cavity 201 in a compressed manner, so that the elastic pendulum block 50 can swing toward or away from the shaping cavity 201 at the lower part with the hinge point of the upper part as the rotation center, and is always subjected to the effect of elastic pressing force. In addition, a stripping hook 51 extending toward the side close to the shaping cavity 201 is arranged at the bottom of the elastic pendulum block 50;

[0023] The lower mold plate 30 is fixedly connected to the top of the lower mold base 40 , and a shaping punch 31 matching the shaping cavity 201 is installed in the lower mold plate 30 , which is used to carry the product 32 to be shaped and can complete the shaping of the product 32 when it rises into the shaping cavity 201 . In addition, the shaping punch 31 is provided with a stripping block 33 that can be directional and move up and down on the outer side of the protruding lower template 30, and at the same time, the top of the stripping block 33 is surrounded by a boss 331 that cooperates with the stripping hook 51 on the outer peripheral side, and the bottom of the stripping block 33 is connected to the lower template 30 through an equal height part 60 to limit the upward movement of the stripping block 33. In this way, during the mold closing process, the upper mold base 10 drives the die 20 to move downward, and when the stripping hook 51 moves to the boss 331 of the stripping block 33, the elastic extrusion force of the lower part of the elastic pendulum block 50 is overcome, and the stripping hook 51 gradually passes over the boss 331 until the force is reset to the position again under the action of elasticity. The stripping block 33 is moved upward to the vertically extended state, and then continues to move downward, and the shaping of the product 32 is completed with the help of the shaping punch 31 and the shaping cavity 201. Thereafter, in the process of mold opening, the die 20 drives the stripping hook 51 to move upward, and the stripping hook 51 drives the stripping block 33 to move upward through the boss 331, while the shaping punch 31 is fixed, so the automatic stripping of the product 32 can be completed with the help of the stripping block 33. When the stripping block 33 moves up to the stroke limit position of the equal height part 60, the stripping block 33 no longer moves up, and the die 20 continues to move upward, and it will automatically overcome the elastic force of the lower part of the elastic pendulum block 50 to make the stripping hook 51 separate from the boss 331, and then the stripping block 33 falls back and resets under the action of its own weight.

[0024] The shaping die stripping structure provided in the present application is not only simple in overall structure, but can also complete automatic stripping work, and is convenient for on-site debugging and installation during use, and is easy to use.

[0025] In one embodiment, a limit block 70 is fixedly installed in the limit cavity 202. The upper part of the limit block 70 is provided with a hinge protrusion 71 on the side close to the shaping cavity 201, and the upper part of the elastic swing block 50 is provided with a hinge groove 501 matched with the hinge protrusion 71, and the side of the elastic swing block 50 close to the shaping cavity 201 is provided with a avoidance notch 502, and in the horizontal direction, the avoidance notch 502 is located above the hinge groove 501, so that the lower part of the elastic swing block 50 can swing outward through the cooperation of the hinge protrusion 71 and the hinge groove 501;

[0026] A spring 80 is installed in the limiting cavity 202 below the hinge protrusion 71, and the spring 80 is horizontally elastically connected between the outer wall of the elastic pendulum block 50 and the side wall of the limiting cavity 202 away from the shaping cavity 201 in a compressed manner.

[0027] Further preferably, the spring 80 horizontally passes through the limit block 70 in a clearance fit manner, so that the limit block 70 can be used to guide the limit spring 80, so that the spring 80 can only be extended and retracted in the horizontal direction, while also facilitating the installation of the spring 80.

[0028] In one embodiment, the contour part 60 includes a guide portion 61 and a limiting portion 62 arranged at the lower portion of the guide portion 61 and protruding circumferentially. At the same time, the lower mold plate 30 is provided with a guide channel 301 for the guide portion 61 to move up and down, and the limiting portion 62 is located below the lower mold plate 30 and protrudes circumferentially from the guide channel 301. In addition, a travel space 401 is provided in the lower mold base 40 for the limiting portion 62 to move up and down. During the up and down movement of the stripping block 33, the guide portion 61 cooperates with the guide channel 301, and the stripping block 33 cooperates with the shaping punch 31 on the inner side, which can ensure the accuracy of the up and down movement of the stripping block 33. When the stripping block 33 moves up a certain distance so that the limit portion 62 abuts against the bottom of the lower template 30, the limit portion 62 will limit the stripping block 33 from continuing to move up. At this time, the stripping hook 51 will overcome the elastic force of the spring 80 and swing outward, and gradually separate from the stripping block 33, so that the stripping block 33 separated from the stripping hook 51 can fall back and reset under its own weight.

[0029] Further preferably, the contour part 60 includes a screw threadedly connected to the shaping punch 31 and a T-shaped contour sleeve fixedly sleeved on the surface of the screw, wherein the sleeve of the T-shaped contour sleeve constitutes the guide portion 61, and the sleeve abuts against the bottom of the lower template 30 at one end and against the nut of the screw at the other end, wherein the limit head of the T-shaped contour sleeve constitutes the limit portion 62, so that the contour part 60 is easy to manufacture and form, and it only needs to put the T-shaped contour sleeve of the same specification on the screw of the same specification and abut against the nut of the screw at the same time. The overall structure is simple and convenient for later maintenance.

[0030] 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. The shaping mold stripping structure is characterized by: It comprises an upper die base, a concave die, a lower die plate and a lower die base, wherein the concave die is fixedly connected to the bottom of the upper die base, the concave die is provided with a shaping cavity at the bottom, and square limit cavities are symmetrically provided on both sides of the shaping cavity, an elastic pendulum block is provided in the limit cavity, in an initial state, the elastic pendulum block extends in a vertical direction, the upper part of the elastic pendulum block is hinged to the concave die through a side away from the shaping cavity, the lower part of the elastic pendulum block elastically abuts against a side of the limit cavity close to the shaping cavity in a compressed manner, and a stripping hook extending toward a side close to the shaping cavity is provided at the bottom of the elastic pendulum block; The lower template is fixedly connected to the top of the lower die base, and a shaping punch matching the shaping cavity is installed in the lower template. The shaping punch is provided with a stripping block that can be directed to move up and down on the outer side protruding from the lower template. The top of the stripping block is surrounded by a boss matching the stripping hook on the outer peripheral side, and the bottom of the stripping block is connected to the lower template by an equal height part to limit the upward movement of the stripping block.

2. The shaping mold stripping structure according to claim 1, characterized in that: The horizontal cross-section of the shaping cavity is a rectangle, there are four limiting cavities, and every two limiting cavities are symmetrically distributed on both sides of the length direction of the shaping cavity.

3. The shaping mold stripping structure according to claim 1, characterized in that: A limit block is fixedly installed in the limit cavity, a hinge protrusion is arranged on the upper part of the limit block at a side close to the shaping cavity, a hinge groove matched with the hinge protrusion is arranged on the upper part of the elastic swing block, and a position avoidance notch is arranged on the side of the elastic swing block close to the shaping cavity, and in the horizontal direction, the position avoidance notch is located above the hinge groove; A spring is installed in the limiting cavity below the hinge protrusion, and the spring is horizontally elastically connected between the outer side wall of the elastic pendulum block and the side wall of the limiting cavity away from the shaping cavity in a compressed manner.

4. The shaping mold stripping structure according to claim 3, characterized in that: The spring horizontally penetrates the limiting block in a clearance-fitting manner.

5. The shaping mold stripping structure according to claim 3 or 4, characterized in that: The contour part includes a guide portion and a limiting portion arranged at the lower part of the guide portion and protruding circumferentially. The lower mold plate is provided with a guide channel for the guide portion to move up and down. The limiting portion is located below the lower mold plate and protrudes circumferentially from the guide channel. A travel space for the limiting portion to move up and down is provided in the lower mold base.

6. The shaping mold stripping structure according to claim 5, characterized in that: The contour part includes a screw threadedly connected to the shaping punch and a T-shaped contour sleeve fixedly sleeved on the surface of the screw, the sleeve of the T-shaped contour sleeve constitutes the guide part, and the sleeve abuts against the bottom of the lower template at one end and against the nut of the screw at the other end, and the limit head of the T-shaped contour sleeve constitutes the limit part.

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