Die for stamping thin plate

Abstract

The utility model discloses a die for sheet stamping, which comprises an upper die and a lower die, the upper die is fixedly connected with a punch and can move up and down under the action of the punch, the lower die is fixedly arranged on a base, the upper die and the lower die can enclose to form a die pressing cavity, the upper die is provided with an upper through hole for communicating the die pressing cavity with the outside, and the lower die is provided with a lower through hole for communicating the die pressing cavity with the outside. And a lower through hole is formed in the lower mold to communicate the mold pressing cavity with the outside. The stamping die is reasonable in structure, stamping parts are not prone to damage, and stamping quality can be improved.

Description

Technical Field

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

[0002] Stamping is a metalworking method commonly used in mass production. It utilizes dies and a punch to plastically deform a flat material (usually a metal sheet) into the desired shape. When the stamped part is made of thin sheet material, such as 0.5mm thick annealed copper sheet, the stamping process often experiences significant pressure fluctuations due to the material's high ductility, leading to breakage at weak points in the sheet. This results in a low yield rate and uneven thickness in the finished product, hindering quality. Utility Model Content

[0003] The utility model discloses a die for thin plate stamping, which solves the technical problems of easy breakage and uneven thickness of finished products in the prior art of thin plate stamping. It has a reasonable structure, the stamping parts are not easy to be damaged, and the technical effects of improving the stamping quality are as follows. The technical solution adopted is as follows:

[0004] A die for thin plate stamping includes an upper die and a lower die. The upper die is fixedly connected to a punch and can move up and down under the action of the punch. The lower die is fixedly arranged on a base. The upper die and the lower die can enclose and form a molding cavity. The upper die is provided with an upper through hole to connect the molding cavity with the outside world. The lower die is provided with a lower through hole to connect the tube molding cavity with the outside world.

[0005] On the basis of the above technical solution, the outer edge of the molding cavity extends horizontally outward to form an annular area, so that the upper mold and the lower mold can jointly press and clamp the edge area of ​​the thin plate stamping part.

[0006] On the basis of the above technical solution, the end of the lower through hole is connected to the first fan, and under the action of the first fan, the air flow can be discharged outward through the lower through hole.

[0007] On the basis of the above technical solution, the end of the upper through hole is connected to the second fan, and under the action of the second fan, the air flow enters the molding cavity through the upper through hole.

[0008] On the basis of the above technical solution, the air inlet of the first fan is communicated with the end of the lower through hole, and the air outlet of the first fan is communicated with the end of the upper through hole.

[0009] On the basis of the above technical solution, a controller is further included. The punch moves up and down under the action of the driving unit, and the controller is electrically connected to the driving unit and the first fan respectively.

[0010] Based on the above technical solution, the end surface of the upper mold facing the lower mold includes a convex portion. When the upper mold and the lower mold are combined to form a molding cavity, the convex portion extends into the annular groove of the lower mold and fits in the gap with the annular groove.

[0011] On the basis of the above technical solution, the end surface of the lower mold facing the upper mold is provided with a plurality of pressure sensors arranged circumferentially, and the pressure sensors are electrically connected to the controller and can send signals to the controller.

[0012] On the basis of the above technical solution, the controller is further electrically connected to an alarm. When the difference between the signals sent by any two pressure sensors reaches a set range value, the controller controls the alarm to send out an alarm signal.

[0013] Beneficial effects

[0014] The utility model has a reasonable structure. An upper through hole is provided on the upper mold, and a lower through hole is provided on the lower mold. During stamping, gas can be discharged outwards through the upper through hole and the lower through hole in the process of forming the mold cavity. This can reduce the impact of air pressure changes at the stamping parts on the stamping parts, reduce the damage of the stamping parts, and at the same time make the thickness of the workpiece after stamping more uniform, which is conducive to improving the stamping quality.

[0015] In the utility model, the first fan is connected to the lower through hole, the second fan is connected to the upper through hole, and the first fan, the second fan and the stamping drive unit are respectively connected to the controller. In this way, when the punch is moved, the first fan and the second fan are linked to make the stamping parts better fit the upper mold or the lower mold under the action of air pressure, which is beneficial to improving the molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 : Schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 : A schematic structural diagram of the main view of the utility model;

[0019] Figure 3 : A partial cross-sectional structural diagram of the main view of the utility model; DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0023] 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.

[0024] 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.

[0025] like Figures 1-3The die shown is a die for thin plate stamping, comprising an upper die 1 and a lower die 2. The upper die 1 is fixedly connected to the punch 3 and can be displaced up and down under the action of the punch 3. The upper die 1 is fixedly connected to the mounting seat 8, and the lower die 2 is fixedly mounted on the base 4. The base 4 is also provided with a guide column 7. The upper end of the guide column 7 passes through the mounting seat 8 and is slidably connected to the mounting seat 8 up and down. A linear bearing is sleeved at the sliding connection between the guide column 7 and the mounting seat 8, and a spring is provided on the outer sleeve of the guide column 7 between the lower end surface of the linear bearing and the base to cushion the impact force of the punch 3 pressing down.

[0026] like Figure 3 As shown, the upper mold 1 and the lower mold 2 can enclose to form a molding cavity 5, and the outer edge of the molding cavity 5 extends horizontally outward to form an annular area, so that the upper mold 1 and the lower mold 2 can jointly press and clamp the edge area of ​​the thin plate stamping part to avoid displacement of the stamping part during the stamping plastic deformation process.

[0027] The upper mold 1 includes a conical cavity, and an upper through hole 11 is provided on the inner top surface of the conical cavity. The upper through hole 11 extends vertically to connect the molding cavity 5 with the outside world. The end of the upper through hole 11 is connected to a second fan (not shown). The second fan is fixed on the mounting base 8. Under the action of the second fan, the air flow enters the molding cavity 5 through the upper through hole 11. The second fan is existing technology and can be selected by ordinary technicians in this field according to needs.

[0028] The lower mold 2 includes a conical body adapted to the conical cavity. A lower through hole 21 is provided on the top surface of the conical body. The lower through hole 21 extends vertically to connect the tube molding cavity 5 with the outside world. The end of the lower through hole 21 is connected to a first fan (not shown). The first fan is fixed on the base 4. Under the action of the first fan, the air flow can be discharged outward through the lower through hole 21.

[0029] In addition, the end face of the upper mold 1 facing the lower mold 2 includes a protrusion 6. When the upper mold 1 and the lower mold 2 are enclosed to form the molding cavity 5, the protrusion 6 can extend into the groove of the lower mold 2 and fit with the gap of the groove, so that the upper mold 1 can be guided, so that the upper mold 11 has a higher displacement accuracy.

[0030] The end surface of the lower mold 2 facing the upper mold 1 is provided with several pressure sensors (not shown) arranged circumferentially. The pressure sensors are electrically connected to the controller and can send signals to the controller. The controller is also electrically connected to an alarm. When the difference in the signals sent by any two pressure sensors reaches the set range value, it indicates that the upper mold 1 has flipped at a certain angle, which will cause uneven thickness of the stamping part. At this time, the controller controls the alarm to send an alarm signal to remind the staff to carry out maintenance.

[0031] The punch 3 moves up and down under the action of the driving unit, and the controller is also electrically connected to the driving unit, the first fan and the second fan respectively to improve the degree of processing automation.

[0032] 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 sheet metal stamping, characterized in that: The invention comprises an upper die (1) and a lower die (2), wherein the upper die (1) is fixedly connected to a punch (3) and can move up and down under the action of the punch (3), and the lower die (2) is fixedly arranged on a base (4). The upper die (1) and the lower die (2) can enclose and form a molding cavity (5), and the upper die (1) is provided with an upper through hole (11) to connect the molding cavity (5) with the outside world, and the lower die (2) is provided with a lower through hole (21) to connect the tube molding cavity (5) with the outside world.

2. The sheet metal stamping die according to claim 1, wherein: The outer edge of the die pressing cavity (5) extends horizontally outward to form an annular area, so that the upper die (1) and the lower die (2) can jointly press and clamp the edge area of ​​the thin plate stamping part.

3. The sheet metal stamping die according to claim 1 or 2, wherein: The end of the lower through hole (21) is communicated with a first fan, and under the action of the first fan, air flow can be discharged outward through the lower through hole (21).

4. The sheet metal stamping die according to claim 3, wherein: The end of the upper through hole (11) is connected to the second fan, and under the action of the second fan, the air flow enters the molding cavity (5) through the upper through hole (11).

5. The sheet metal stamping die according to claim 3, wherein: The air inlet of the first fan is in communication with the end of the lower through hole (21), and the air outlet of the first fan is in communication with the end of the upper through hole (11).

6. The sheet metal stamping die according to claim 4 or 5, wherein: It also includes a controller, the punch (3) moves up and down under the action of the drive unit, and the controller is electrically connected to the drive unit and the first fan respectively.

7. The sheet metal stamping die according to claim 6, wherein: The end surface of the upper mold (1) facing the lower mold (2) includes a convex portion (6). When the upper mold (1) and the lower mold (2) enclose a molding cavity (5), the convex portion (6) extends into the annular groove of the lower mold (2) and is in clearance fit with the annular groove.

8. The sheet metal stamping die according to claim 7, wherein: The end surface of the lower mold (2) facing the upper mold (1) is provided with a plurality of pressure sensors arranged circumferentially, and the pressure sensors are electrically connected to the controller and can send signals to the controller.

9. The sheet metal stamping die according to claim 8, wherein: The controller is also electrically connected to an alarm. When the difference between the signals sent by any two pressure sensors reaches a set range, the controller controls the alarm to send out an alarm signal.

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