punching device

Abstract

A punching device includes a fixed frame, a lower die holder, and an upper die holder. The lower die holder includes a lower base body, a cutting groove, and a stop seat. The lower base body has a narrow through groove, the cutting groove is located on the lower base body and connects to the narrow through groove, and the stop seat is located in the narrow through groove and faces the cutting groove. The upper die holder includes an upper base body and a punching die. The upper base body is vertically connected to the fixed frame, and the punching die is fixedly connected to the upper base body and aligned with the cutting groove for extending into the cutting groove and punching the sheet metal workpiece. The end of the punching die has a cutting edge, which is divided into a single inclined surface and a pressing plane. The pressing plane is adjacent to the single inclined surface and faces the stop seat. With the above structure, this invention can help improve the punching edge of the sheet metal workpiece, avoiding defects such as obvious tool marks, thereby effectively improving the edge smoothness and precision of the sheet metal workpiece.

Description

Technical Field

[0001] This utility model relates to a punching device, and more particularly to a punching device for improving the joint marks of the blade. Background Technology

[0002] In recent years, sheet metal manufacturers have typically used die-cutting tools to cut sheet metal workpieces by stamping, which cuts off the edge material of the workpiece.

[0003] However, manufacturers have found that after the sheet metal workpiece is cut, obvious tool marks (such as raised marks or burrs) are inevitably produced on the edges, which affects the smoothness and precision of the sheet metal workpiece's edges.

[0004] However, the aforementioned technologies still have inconveniences and shortcomings, requiring further improvement. Therefore, how to effectively solve these inconveniences and shortcomings is one of the important research and development topics at present, and has become a goal that urgently needs improvement in related fields. Utility Model Content

[0005] This invention proposes a punching device to solve the problems of the prior art.

[0006] According to one embodiment of the present invention, a punching device includes a fixed frame, a lower die holder, and an upper die holder. The lower die holder includes a lower base body, a cutting groove, and a stop seat. The lower base body has a narrow through groove, the cutting groove is located on the lower base body and connects to the narrow through groove, and the stop seat is located in the narrow through groove and faces the cutting groove. The upper die holder includes an upper base body and a punching die. The upper base body is vertically connected to the fixed frame, and the punching die is fixedly connected to the upper base body and aligned with the cutting groove. The end of the punching die has a cutting edge, which is divided into a single inclined surface and a pressing plane. The pressing plane is adjacent to the single inclined surface and faces the stop seat.

[0007] According to one or more embodiments of the present invention, in the above-mentioned punching device, the stop seat includes at least one fixed post, at least one buffer spring, and a top abutment. The fixed post is connected to the lower seat body. The buffer spring is sleeved on the fixed post. The top abutment is located in a narrow through groove and is connected to both the fixed post and the buffer spring.

[0008] According to one or more embodiments of the present invention, in the above-mentioned punching device, the top support portion has a top support surface, which is located on one side opposite to the buffer spring, parallel to and overlapping the pressing plane.

[0009] According to one or more embodiments of the present invention, in the above-mentioned punching device, the lower die base further includes a partition portion, which is located in the narrow through groove and separates the narrow through groove into a residual material channel and an opposing channel.

[0010] According to one or more embodiments of the present invention, in the above-mentioned punching device, the dividing part includes a body and a groove. The body is located in the narrow through groove, is fixedly connected to the lower seat, and divides the narrow through groove into a residual material channel and an opposite channel. The groove is formed on the side of the body facing the upper die seat, connects to the cutting groove, and partially accommodates the stop seat.

[0011] According to one or more embodiments of the present invention, in the above-mentioned punching device, the main body has a guide slope, which is connected to the top surface and faces the residual material channel.

[0012] According to one or more embodiments of the present invention, in the above-described punching device, the lower seat further includes a recess and a cover. The recess is formed on the side of the lower seat facing the upper die, and a narrow through-slot connects to the bottom surface of the recess. The cover is replaceably placed in the recess. A cutting groove penetrates the cover and connects to the residual material channel.

[0013] According to one or more embodiments of the present invention, in the above-described punching device, the upper die holder further includes a housing and an end cap. The housing has an internal space for accommodating the punching die. The end cap covers the housing and the internal space, and has a blade outlet that communicates with the internal space. The punching die is located inside the blade outlet, and the cutting edge is located outside the blade outlet.

[0014] According to one or more embodiments of the present invention, in the above-mentioned punching device, the upper die holder further includes a protective spring, which is located outside the internal space and connected to the housing.

[0015] According to one or more embodiments of the present invention, in the above-mentioned punching device, there is an acute angle between the pressing plane and the single inclined plane.

[0016] Thus, through the above structure, the punching device of this utility model can help improve the punching edge of the sheet metal workpiece, and avoid defects such as obvious tool marks, thereby effectively improving the smoothness and precision of the edge of the sheet metal workpiece.

[0017] The above description is only used to illustrate the problem that this utility model intends to solve, the technical means to solve the problem, and the effects it produces. The specific details of this utility model will be described in detail in the following embodiments and related drawings. Attached Figure Description

[0018] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the accompanying drawings are described below:

[0019] Figure 1 This is a perspective view of the lower die base of a punching device according to an embodiment of the present invention;

[0020] Figure 2 This is a perspective view of the upper die holder of the punching device in this embodiment;

[0021] Figure 3 for Figure 1 Exploded view of the lower mold base;

[0022] Figure 4 This is a cross-sectional schematic diagram of the punching device in this embodiment;

[0023] Figures 5A to 5C This is a schematic diagram of the continuous operation of the punching device in this embodiment.

[0024] [Symbol Explanation]

[0025] 10: Punching device

[0026] 100: Fixture

[0027] 200: Lower mold base

[0028] 210: lower body

[0029] 211: Top surface

[0030] 212: Bottom

[0031] 213: Depression

[0032] 213A: Bottom surface

[0033] 220: Tool Groove

[0034] 221: Narrow through groove

[0035] 222: Cover

[0036] 230: Stop seat

[0037] 231: Fixed Column

[0038] 232: Top and back part

[0039] 232A: Top and back surfaces

[0040] 233: Buffer spring

[0041] 240: Divider

[0042] 241:Ontology

[0043] 242: Groove

[0044] 243: Guiding slope

[0045] 300: Upper mold base

[0046] 310: Theta

[0047] 311: Chassis

[0048] 312: End Cap

[0049] 313: Cutting edge

[0050] 314: Interior Space

[0051] 330: Punching Die

[0052] 340: Blade section

[0053] 341: Single inclined plane

[0054] 342: Press-down plane

[0055] 350: Protective spring

[0056] 400: Sheet metal workpiece

[0057] 410: Cutting scraps

[0058] P1: Residual Material Channel

[0059] P2: Relative Channel

[0060] Z: Axis

[0061] θ: Acute angle Detailed Implementation

[0062] The following describes multiple embodiments of the present invention with reference to the accompanying drawings. For clarity, many practical details will be described in the following description. However, those skilled in the art should understand that these practical details are not essential in some embodiments of the present invention and therefore should not be used to limit the present invention. Furthermore, for the sake of simplicity, some conventional structures and components are shown in the drawings in a simplified schematic manner. Additionally, for ease of viewing, the dimensions of the components in the drawings are not drawn to scale.

[0063] Figure 1 This is a perspective view of the lower die base 200 of the punching device 10 according to an embodiment of the present invention. Figure 2 This is a perspective view of the upper die holder 300 of the punching device 10 in this embodiment. Figure 3 for Figure 1 An exploded view of the lower mold base 200. (See attached image.) Figures 1 to 3As shown, in this embodiment, a punching device 10 for improving tool marks includes a lower die holder 200 and an upper die holder 300. The lower die holder 200 includes a lower body 210, a cutting groove 220, and a stop seat 230. The lower body 210 has a top surface 211 and a bottom surface 212 facing each other. The top surface 211 of the lower body 210 faces the upper die holder 300. A narrow through groove 221 is further defined within the lower body 210. The narrow through groove 221 penetrates the lower body 210 and connects the top surface 211 and the bottom surface 212 of the lower body 210 respectively. The cutting groove 220 is located on the lower body 210 and connects to the narrow through groove 221. The stop seat 230 is located within the narrow through groove 221 and faces the cutting groove 220.

[0064] In addition, such as Figure 3 As shown, the lower seat 210 also includes a recess 213 and a cover 222. The recess 213 is formed on the side of the lower seat 210 facing the upper mold base 300, and a narrow through groove 221 connects to the bottom surface 213A of the recess 213. The cover 222 is replaceably placed in the recess 213. A cutting groove 220 penetrates the cover 222 and connects to the narrow through groove 221 below the recess 213.

[0065] The upper die holder 300 includes an upper body 310 and a punching die 330. The punching die 330 is fixedly connected to the upper body 310 and aligned with the cutting groove 220 for extending into the cutting groove 220. The end of the punching die 330 has a cutting edge 340. The cutting edge 340 is divided into a single inclined surface 341 and a pressing plane 342, the pressing plane 342 being adjacent to the single inclined surface 341 and facing the stop seat 230. More specifically, the punching die 330 is a non-joint cutting edge; and / or, the pressing plane 342 and the single inclined surface 341 have an acute angle θ, for example, 8° to 10°, however, the present invention is not limited thereto.

[0066] Figure 4 This is a cross-sectional schematic diagram of the punching device 10 in this embodiment. In this embodiment, as... Figure 3 and Figure 4As shown, more specifically, the upper body 310 is vertically and flexibly connected to a fixed frame 100, allowing the upper body 310 to move downwards in a vertical direction (e.g., the Z-axis) to the lower die holder 200, or return to its original position. For example, the fixed frame 100 can raise and lower the upper die holder 300 via a motor, cylinder, or robotic arm. The upper body 310 also includes a housing 311 and an end cap 312. The housing 311 has an internal space 314 for accommodating a punching die 330. The end cap 312 is locked to one side of the housing 311 and covers the housing 311 and the internal space 314. The end cap 312 has a cutting outlet 313 that communicates with the internal space 314. The punching die 330 is fixed within the internal space 314, and the cutting edge 340 of the punching die 330 extends out of the internal space 314 through the cutting outlet 313. The upper mold base 300 also includes a protective spring 350, which is located outside the internal space 314 and connected to the housing 311 to provide cushioning protection when the upper mold base 300 is pulled back to its original position. However, the present invention is not limited thereto.

[0067] like Figure 3 and Figure 4 As shown, the stop seat 230 includes a top abutment 232, two fixed posts 231, and two buffer springs 233. These fixed posts 231 are parallel to each other and fixed within a narrow through-slot 221, with their major axes parallel to a vertical direction (e.g., the Z-axis). This means that the ends of the fixed posts 231 facing the cutting die 330 are fixed within the narrow through-slot 221, while the remaining portions extend out of the narrow through-slot 221 along a vertical direction (e.g., the Z-axis). Each buffer spring 233 is sleeved on and surrounds one of the fixed posts 231, providing cushioning protection against the downward impact force of the cutting die 330. The top abutment 232 is, for example, inverted T-shaped, with one portion located within the narrow through-slot 221 and the other portion connecting the fixed post 231 and the buffer spring 233. The top abutment surface 232A is located at one end of the top abutment portion 232 opposite to the buffer spring 233, and the top abutment surface 232A is parallel to and overlaps the pressing plane 342 of the punching die 330.

[0068] Furthermore, the lower die holder 200 also includes a partition 240. The partition 240 is fixedly located within the elongated through groove 221 to hold a portion of the stop seat 230. The partition 240 divides the elongated through groove 221 into a waste material channel P1 and an opposing channel P2. In addition, the partition 240 has a guide ramp 243, which connects to the top abutment surface 232A and faces the waste material channel P1.

[0069] More specifically, the partition 240 includes a body 241 and a groove 242. The body 241 is fixed in the elongated through groove 221, connects to the lower seat 210, and separates the elongated through groove 221 into the residual material channel P1 and the opposite channel P2. The groove 242 is formed on the side of the body 241 facing the upper mold base 300, connects the elongated through groove 221 and the cutting groove 220, and accommodates a part of the stop seat 230 (i.e., the top abutment 232).

[0070] Figures 5A to 5C This is a schematic diagram illustrating the continuous operation of the punching device 10 in this embodiment. Figure 4 and Figure 5A As shown, when the upper die base 300 descends and the punching die 330 punches the sheet metal workpiece 400 on the lower die base 200 to a first depth, the punching die 330 presses a portion of the edge of the sheet metal workpiece 400 (hereinafter referred to as the cutting residue 410) into the narrow through groove 221 via the cutting groove 220.

[0071] More specifically, the cutting edge 340 of the punching die 330 extends into the cutting groove 220. The cutting edge 340, conforming to the shape of the cutting groove 220 (e.g., elongated), presses the cutting residue 410 of the sheet metal workpiece 400 into the narrow through groove 221 until the pressing plane 342 moves through the cutting residue 410 onto the top surface 232A of the stop seat 230. At this point, only one side of the cutting residue 410 remains connected to the sheet metal workpiece 400; the other sides are separated from the sheet metal workpiece 400. Figure 5A ).

[0072] like Figure 5B and Figure 5C As shown, next, when the sheet metal workpiece 400 is further pushed on the cover 222, causing the cut residue 410 of the sheet metal workpiece 400 to be pushed into the residue channel P1 by a certain length, the cutting edge 340 of the punching die 330 punches the cut residue 410 again to a second depth greater than the first depth, thereby completely separating the cut residue 410 from the sheet metal workpiece 400. More specifically, since the punching die 330 completely separates the cut residue 410 from the sheet metal workpiece 400, the cut residue 410 falls from the residue channel P1 into the recycling tank (not shown in the figure).

[0073] Thus, through the above structure, the punching device of this utility model can help improve the punching edge of the sheet metal workpiece, and avoid defects such as obvious tool marks, thereby effectively improving the smoothness and precision of the edge of the sheet metal workpiece.

[0074] Finally, the embodiments disclosed above are not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention, and all such modifications and refinements will be protected under the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A die cutting apparatus characterized by, include: A fixed frame; A lower mold base includes a lower base body, a cutting groove and a stop seat. The lower base body has a narrow through groove. The cutting groove is located on the lower base body and is connected to the narrow through groove. The stop seat is located in the narrow through groove and faces the cutting groove. as well as An upper die base includes an upper body and a punching die. The upper body is vertically and flexibly connected to the fixed frame. The punching die is fixedly connected to the upper body and aligned with the cutting groove. The end of the punching die has a cutting edge, which is divided into a single inclined surface and a pressing plane. The pressing plane is adjacent to the single inclined surface and faces the stop seat.

2. The die cutting apparatus of claim 1, wherein, The stop seat includes: At least one fixed post connects to the lower seat body; At least one buffer spring is sleeved on the fixed post; and A top support is located within the narrow through groove, connecting the fixed column and the buffer spring respectively.

3. The die cutting apparatus of claim 2, wherein, The top support portion has a top support surface, which is located on one side opposite to the buffer spring, parallel to and overlapping the downward pressure plane.

4. The die cutting apparatus of claim 3, wherein, The lower mold base also includes a partition portion located within the narrow through groove, which separates the narrow through groove into a residual material channel and an opposing channel.

5. The die cutting apparatus of claim 4, wherein, The partition includes a body and a groove. The body is located in the narrow through groove, is fixedly connected to the lower seat, and separates the narrow through groove into the residual material channel and the opposite channel. The groove is formed on the side of the body facing the upper mold seat, connects to the cutting groove, and partially accommodates the stop seat.

6. The die cutting apparatus of claim 5, wherein, The body has a guide ramp that connects to the top surface and faces the waste material channel.

7. The die cutting apparatus of claim 4, wherein, The lower seat also includes: A recess is formed on the side of the lower base facing the upper mold base, and the elongated through groove connects to the bottom surface of the recess; and A cover, which can be replaced and placed inside the recess. The groove penetrates the cover and connects to the waste material channel.

8. The die cutting apparatus of claim 1 wherein, The upper mold base also includes: A housing having an internal space for accommodating the punching die; and An end cap covers the housing and the internal space, and the end cap has a blade outlet that connects to the internal space. The punching die is located inside the exit opening, and the cutting edge is located outside the exit opening.

9. The die cutting apparatus of claim 8, wherein, The upper mold base also includes a protective spring, which is located outside the internal space and connected to the housing.

10. The die cutting apparatus of claim 1 wherein, The downward-pressing plane and the single inclined plane have an acute angle between them.

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