Punching die for annular sheet part

Abstract

The utility model discloses a sheet annular part punching die which comprises an upper die and a lower die, the lower die is arranged on a base and comprises a plurality of conical surfaces which are vertically arranged, the diameters of the small ends of the conical surfaces are gradually increased, and a cutting blade part which annularly extends is formed between every two adjacent conical surfaces. At least one conical surface is connected with the adjacent conical surface in a manner of moving up and down, the upper die comprises a concave cavity matched with the conical surface, and the upper die is fixedly connected with the punch upwards and can move up and down under the action of the punch, so that the conical-surface-shaped workpiece is punched at the cutting blade part. The material taking device is reasonable in structure, facilitates material taking and facilitates improvement of production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping processing, in particular to a punching tool for thin-plate annular parts. Background Art

[0002] Punching metal sheets using a punching machine is suitable for mass production, and not only has high production efficiency but also good quality stability. However, when punching a conical thin plate into multiple ring-shaped parts, the workpiece undergoes plastic deformation at the cutting point, which often causes the punched ring-shaped parts to stick to the mold and be difficult to remove, causing certain production safety risks and hindering the improvement of production efficiency. Utility Model Content

[0003] The utility model discloses a die for punching thin-plate annular parts, which solves the technical problem in the prior art that the annular parts are difficult to remove due to plastic deformation after punching. It has a reasonable structure, convenient material removal, and is conducive to improving production efficiency. The technical solution adopted is as follows:

[0004] A thin plate annular part punching die, including an upper die and a lower die, the lower die is arranged on a base and includes a plurality of vertically arranged conical surfaces, the small end diameters of the plurality of conical surfaces gradually increase, and a ring-shaped extending cutting edge portion is formed between adjacent conical surfaces, at least one of the conical surfaces can be connected to the adjacent conical surfaces so as to be displaced up and down, the upper die includes a concave cavity that cooperates with the conical surface, the upper die is fixedly connected to the punch upward and can be displaced up and down under the action of the punch so that the conical workpiece is punched at the cutting edge portion.

[0005] Based on the above technical solution, the width of the cutting edge is 0.03~0.8mm.

[0006] Based on the above technical solution, the cutting edge portion extends horizontally outward.

[0007] Based on the above technical solution, the tapers of the plurality of conical surfaces are consistent.

[0008] On the basis of the above technical solution, a frustum is provided inside the conical surface at the top, and a ring-shaped extending cutting edge portion is formed between the conical surface at the top and the frustum, and the frustum is connected to the conical surface at the top so as to be displaceable up and down.

[0009] On the basis of the above technical solution, in the whole formed by the plurality of conical surfaces and frustums, the conical surfaces and frustums that can be displaced up and down are spaced apart from the fixed conical surfaces.

[0010] On the basis of the above technical solution, the cone surface and the frustum that can move up and down are connected to the elastic member downward.

[0011] On the basis of the above technical solution, two fixed seats are fixed on the base, and the fixed seats include a cutting edge. When the upper mold moves downward to the lower limit, the waste generated after the conical workpiece is punched can be pressed against the cutting edge to cause the annular waste to break and fall downward.

[0012] Based on the above technical solution, the height of the cutting edge is designed so that when the upper mold is displaced downward to the lower limit and a plurality of waste materials are accommodated between the upper mold and the cutting edge, the upper mold can press the lower layer of waste materials against the cutting edge to cause the lower layer of waste materials to break and fall downward.

[0013] Beneficial effects

[0014] The utility model has a reasonable structure, and multiple conical surfaces are arranged vertically. A cutting edge portion is formed between two adjacent conical surfaces, so that multiple annular parts can be cut by one punch, which is beneficial to greatly improve production efficiency. At least one conical surface can be connected to the adjacent conical surface by being displaced up and down. In this way, when the upper mold is moved up after punching, the annular part on the conical surface can be separated from the adjacent annular parts by moving the conical surface up, thereby facilitating material removal. In addition, in the utility model, a frustum that can be displaced up and down is provided in the top conical surface, which simplifies the steps for the continuous processing from circular plate-conical surface with bottom-multiple annular parts and improves production efficiency. That is, the bottom of the conical surface at the frustum can be punched out while obtaining multiple annular parts.

[0015] In the present invention, the cone surface and the truncated cone that can be displaced up and down are spaced apart from the fixed cone surface, which further improves the convenience of taking out materials. In addition, the cone surface and the truncated cone that can be displaced up and down are connected to the elastic member downward. In this way, when the upper mold is reset, the elastic member can push the corresponding cone surface and the truncated cone upward to separate the annular member at this position from the adjacent annular member. The structural design is reasonable.

[0016] The utility model also includes two fixing seats, the cutting edge of the fixing seats can divide the annular waste formed after punching into two length segments, that is, cut off the annular waste, so that the waste falls under the action of gravity, replacing manual waste removal, which is beneficial to improving production safety and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0018] Figure 1 : Schematic diagram of the three-dimensional structure of the thin plate conical surface part to be punched;

[0019] Figure 2 : Schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 3 : A structural diagram of the main view of the utility model;

[0021] Figure 4 : A schematic diagram of the partial cross-sectional structure of the upper mold in the utility model;

[0022] Figure 5 : Figure 4 A schematic diagram of the partially enlarged structure of the middle part; DETAILED DESCRIPTION

[0023] The following description and accompanying drawings sufficiently illustrate the specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, including all available equivalents thereof. Herein, the terms "first," "second," and the like are used solely to distinguish one element from another and do not require or imply any actual relationship or order between these elements. In practice, the first element can also be referred to as the second element, and vice versa. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a structure, device, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such structure, device, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the structure, device, or apparatus comprising the element. The various embodiments herein are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Similar or identical parts between the various embodiments can be referenced to each other.

[0024] The terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this document and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be mechanical or electrical connections, or they can be internal connections between two elements, they can be directly connected, or they can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0025] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0026] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0027] In this article, the term "and / or" is used to describe the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0028] like Figures 2 to 5 The die for punching thin-plate annular parts shown in the figure comprises an upper die 1 and a lower die 2. The lower die 2 is assembled on a base 4, which is fixedly arranged. The lower die 2 comprises a plurality of vertically arranged conical surfaces 51 / 52 / 53 / 54. The conicity of the plurality of conical surfaces 51 / 52 / 53 / 54 is consistent, and the diameters of the small ends of the plurality of conical surfaces 51 / 52 / 53 / 54 gradually increase. An annular extending cutting edge portion 7 is formed between two adjacent conical surfaces 51 / 52 / 53 / 54, as shown in FIG. Figure 5 As shown, the cutting edge portion 7 extends horizontally outward. In this embodiment, the width of the cutting edge portion 7 is 0.03-0.8 mm;

[0029] The cone 51 at the top is provided with a truncated cone 50, and a ring-shaped cutting edge portion 7 is formed between the top cone 51 and the truncated cone 50, and the truncated cone 50 is connected to the top cone 51 so as to be displaceable up and down, wherein the cone 52 / 54 is connected to the adjacent cone 53 / 51 so as to be displaceable up and down. In addition, in the whole formed by the plurality of cones 51 / 52 / 53 / 54 and the truncated cone 50, the cone 52 / 54 and the truncated cone 50 that can be displaced up and down are arranged at intervals from the fixed cone 51 / 53, as shown in FIG. Figure 4 shown.

[0030] The conical surface 52 / 54 and the frustum 50 that can be displaced vertically are connected to the elastic member downwardly. Specifically, the elastic member includes a rubber spring 100. The rubber spring 100 is sleeved outside the shaft 103. The lower end of the shaft 103 is fixed to the first plate 101. The first plate 101 is fixedly set. The rubber spring 100 abuts against the first plate 101 downwardly. The rubber spring 100 is fixed to the second plate 102 upwardly. The second plate 102 is set parallel to the first plate 101. The second plate 102 is fixed to the conical surface 52 / 54 and the frustum 50 that can be displaced vertically upwardly. The fixed conical surface 51 / 53 is fixed on the base 4.

[0031] The upper die 1 includes a concave cavity that cooperates with the conical surface 51 / 52 / 53 / 54 and the round table 50. The upper die 1 is fixedly connected to the punch 3 and can move up and down under the action of the punch 3 so that the conical workpiece is punched at the cutting edge. Figure 1 As shown, when the upper die 1 punches downward to cut the thin conical workpiece, the conical workpiece breaks into a circular plate and multiple concentric ring-shaped parts at the moment of punching. When the punch continues to move downward under the action of inertia, the rubber spring 100 is compressed. When the punch 3 returns upward, the compressed rubber spring 100 slightly pushes the punched ring part upward under the action of elastic force, so that the ring part can be separated from the adjacent ring parts, making it easier for workers to take out the material.

[0032] like Figure 2 and 3 As shown, in addition, the upper mold 1 and the punch 3 are fixedly connected through the mounting seat 9, and also include a guide column 10. The guide column 10 is fixedly connected to the base 4 downward, and the guide column 10 passes through the mounting seat 9 upward and is slidably connected to the mounting seat 9 up and down to play a guiding role.

[0033] Two fixed seats 8 are fixed on the base 4, and the fixed seats 8 include a cutting edge. When the upper mold 1 moves downward to the lower limit, that is, when the punch 3 continues to move downward to the lower limit after punching the conical workpiece, the waste generated after punching the conical workpiece can be pressed against the cutting edge to break the annular waste and fall downward. The design is ingenious and can realize automatic blanking.

[0034] Among them, the height of the cutting edge is designed so that when the upper mold 1 is displaced downward to the lower limit position and multiple waste materials are accommodated between the upper mold and the cutting edge, in this embodiment, when the upper mold 1 is displaced to the lower limit position, at most 3 to 6 pieces of waste materials can be accommodated between the upper mold and the cutting edge, which not only buffers the impact force of the upper mold 1 and has a shock-absorbing effect, but also the lower layer of waste materials is pressed against the cutting edge, causing the lower layer of waste materials to break at the cutting edge and fall downward.

[0035] Working process

[0036] First, a thin plate cone-shaped workpiece is prepared, such as Figure 1As shown, a thin circular plate is punched in a punching machine to obtain a thin conical workpiece with a bottom;

[0037] Afterwards, a thin conical workpiece is placed on the lower die 2, and the upper die 1 is driven downward to punch. At the moment of punching, the conical workpiece breaks into a circular plate and multiple concentric rings. When the punch continues to move downward under the action of inertia, the rubber spring 100 is compressed. When the punch 3 returns upward, the compressed rubber spring 100 slightly pushes the punched ring upward under the action of elastic force.

[0038] Afterwards, workers take the materials

[0039] This cycle repeats

[0040] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A die for punching thin-plate ring parts, characterized in that: The invention comprises an upper die (1) and a lower die (2), wherein the lower die (2) is arranged on a base (4) and comprises a plurality of conical surfaces (51, 52, 53, 54) arranged vertically, wherein the diameters of the small ends of the plurality of conical surfaces (51, 52, 53, 54) gradually increase, and a ring-shaped extending cutting edge portion (7) is formed between two adjacent conical surfaces (51, 52, 53, 54), and at least one of the conical surfaces (51, 52, 53, 54) is connected to the adjacent conical surfaces (51, 52, 53, 54) so ​​as to be displaceable up and down. The upper die (1) comprises a concave cavity matched with the conical surfaces (51, 52, 53, 54), and the upper die (1) is fixedly connected to the punch (3) upward and can be displaced up and down under the action of the punch (3), so that the conical workpiece is punched at the cutting edge portion (7).

2. The thin plate ring part punching die according to claim 1, characterized in that: The width of the cutting edge portion (7) is 0.03-0.8 mm.

3. The thin plate ring-shaped part punching die according to claim 2, characterized in that: The cutting edge portion (7) extends horizontally outward.

4. The thin plate ring-shaped part punching die according to claim 2, characterized in that: The tapers of the plurality of conical surfaces (51, 52, 53, 54) are consistent.

5. The die for punching thin-plate annular parts according to any one of claims 1 to 4, characterized in that: A truncated cone (50) is provided inside the conical surface (51) at the top, and a ring-shaped extending cutting edge portion (7) is formed between the conical surface (51) and the truncated cone (50), and the truncated cone (50) is connected to the conical surface (51) at the top so as to be displaceable up and down.

6. The thin plate ring-shaped part punching die according to claim 5, characterized in that: In the whole formed by the plurality of conical surfaces (51, 52, 53, 54) and the frustum (50), the conical surfaces (52, 54) and the frustum (50) that can move up and down are spaced apart from the fixed conical surfaces (51, 53).

7. The thin plate ring-shaped part punching die according to claim 6, characterized in that: The conical surfaces (52, 54) and the frustum (50) that can move up and down are connected downwardly to the elastic member.

8. The thin plate ring-shaped part punching die according to claim 6 or 7, characterized in that: Two fixing seats (8) are fixedly provided on the base (4), and the fixing seats (8) include a cutting edge portion. When the upper mold (1) moves downward to the lower limit position, the waste generated after the conical workpiece is punched can be pressed against the cutting edge portion, so that the annular waste is broken and falls downward.

9. The thin plate ring-shaped part punching die according to claim 8, characterized in that: The height of the cutting edge is designed such that when the upper mold (1) is displaced downward to the lower limit position and a plurality of waste materials are accommodated between the upper mold (1) and the cutting edge, the upper mold (1) can press the lower layer of waste materials against the cutting edge, so that the lower layer of waste materials breaks and falls downward.

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