Stamping die with positioning device

Abstract

The utility model relates to a stamping die with a positioning device, and belongs to the technical field of stamping dies. A forming face is arranged between the upper pressing plate and the lower insert and is in a step shape, a fixedly-connected positioning support is arranged on the lower die base, a hinged supporting piece is arranged in the upper end of the positioning support, the supporting piece is flush with the higher side of the forming face, a plurality of fixedly-connected positioners and positioning rods are arranged on the lower pressing plate, and fixing pieces capable of rotating are arranged on the positioners. In the scheme, the metal plate above the lower side of the forming surface slides to the supporting piece, so that the metal plate is kept in a horizontal placement state before being stamped, then the fixing piece on the positioner rotates to firmly press the metal plate, the position of the metal plate is fixed, in the downward pressing process of the upper pressing plate, one side of the metal plate is firstly pressed and does not move, and therefore the metal plate is prevented from moving. The metal plate can be stably placed on the forming face, and defective products caused by movement of the metal plate in the stamping process are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies and relates to a stamping die with a positioning device. Background Art

[0002] A stamping die is a device used to manufacture sheet metal products. A stamping die usually consists of an upper die base and a lower die base. Upper and lower pressure plates are set between the upper and lower die bases, and a forming surface for stamping the sheet metal is opened between the pressure plates. During the stamping process, the operator places the sheet metal on the forming surface. After starting the mold to close, the upper and lower sides of the sheet metal are pressed by the upper and lower pressure plates to form a structure corresponding to the forming surface. Then, the sheet metal product is removed from the mold, and the sheet metal can be quickly formed into the desired shape.

[0003] However, the stamping dies in the prior art still have some shortcomings. Due to the different requirements for the shapes of sheet metal products, the forming surface structures in each die are also different. For some sheet metal products with a larger curvature of the plate surface, the slope of the forming surface used for manufacturing is also larger. Therefore, in order to place the sheet metal stably in the mold, it is necessary to set a positioning structure in the mold to fix the position of the sheet metal on the forming surface. However, the traditional positioning structure is difficult to achieve a good positioning effect for the forming surface with a larger slope, which makes it easy for the position of the sheet metal to change during stamping, resulting in defective products in production. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the existing technology and propose a stamping die with a positioning device. The technical problem to be solved by this utility model is: how to optimize the positioning structure so that the sheet metal can be stably placed in the die.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a stamping die with a positioning device, comprising an upper die base and a lower die base, the bottom of the upper die base is provided with a fixed upper pressure plate, the lower die base is provided with a lower pressure plate that can move longitudinally, the lower pressure plate is provided with a lower insert, a forming surface is provided between the upper pressure plate and the lower insert, and the forming surface is stepped, and a fixed positioning bracket is provided on the lower die base, the positioning bracket is provided on the lower side close to the forming surface, and a hinged support is provided inside the upper end of the positioning bracket, and the support is flush with the higher side of the forming surface, and a number of fixed locators and positioning rods are provided on the lower pressure plate, the locators and positioning rods are respectively provided on the peripheral side of the lower insert, the tops of the locators and positioning rods are provided with guide slopes, and the locators are provided with rotatable fixing parts.

[0006] In this solution, the locator, positioning rod and positioning bracket are used to fix the position of the sheet metal on the forming surface, wherein the guide bevels on the top of the locator and the positioning rod guide the sheet metal. When the sheet metal contacts the guide bevels, it can slide to the inner bottom of the locator and the positioning rod, which can make it more convenient to place the sheet metal. The sheet metal above the lower side of the forming surface will slide onto the support, so that the sheet metal remains in a horizontal position before stamping. Then the fixing part on the locator rotates to press the sheet metal firmly, so that the position of the sheet metal is fixed. During the process of the upper pressure plate pressing down, one side of the sheet metal is first subjected to pressure and will not move. Through the above-mentioned positioning structure, the sheet metal can be stably placed on the forming surface, avoiding defective products caused by the movement of the sheet metal during the stamping process.

[0007] In the aforementioned stamping die with a positioning device, a pressing portion is provided at the bottom of the upper die base. This pressing portion is capable of abutting against the support member and pushing the support member to rotate. A return spring is connected to the side of the support member away from the forming surface, and the other end of the return spring is connected to the bottom of the positioning bracket. The pressing portion can press down on the support member to rotate downward, while simultaneously causing the sheet metal on the support member to bend downward. Because a spring is connected to the outside of the support member, after stamping is completed, the pressing portion moves upward, causing the end of the support member to lose its abutment and, pulled downward by the return spring, return to its initial position.

[0008] In the aforementioned stamping die with a positioning device, a stopper is provided at the top of the positioning bracket. When one end of the support member abuts the stopper, the support member remains horizontal. During the resetting process, when the support member is pulled horizontally, the top of the support member abuts the stopper, maintaining the support member in a horizontal position and facilitating the placement of one side of the sheet metal on the support member.

[0009] In the aforementioned stamping die with a positioning device, a cutting block is fixed to the lower die base. One end of the cutting block extends through the lower platen and lower insert to the bottom of the forming surface. The cutting block is located at the bottom of the lower insert. The upper platen pushes the lower platen and lower insert downward a distance, allowing the cutting block to extend from the bottom of the lower insert and cut the sheet metal.

[0010] In the aforementioned stamping die with a positioning device, nitrogen gas springs are installed between the lower platen and the lower die base, and shock absorbers are installed between the upper die base and the upper platen. These shock absorbers are topped with several fixed connecting plates. The nitrogen gas springs push the lower platen upward and back to its original position, while the shock absorbers act as a buffer, reducing stress between the upper die base and the upper platen and extending the life of the die.

[0011] In the aforementioned stamping die with a positioning device, the upper platen is detachably connected to the upper die base, and the lower insert is detachably connected to the lower platen. A forming surface is provided between the upper platen and the lower insert. By replacing the upper platen and the lower insert, the structure formed on the sheet metal can be changed, thereby reducing production costs.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. In this solution, the sheet metal above the lower side of the forming surface will slide onto the support, so that the sheet metal remains in a horizontal position before stamping. Then the fixing part on the locator rotates to press the sheet metal firmly, so that the position of the sheet metal is fixed. During the downward pressure of the upper platen, one side of the sheet metal is first subjected to pressure and will not move. The sheet metal can be stably placed on the forming surface, avoiding defective products caused by the movement of the sheet metal during the stamping process.

[0014] 2. In this solution, the pressing part can press down to push the support to rotate downward, and at the same time, the pressing part drives the sheet metal on the support to bend downward. Since a spring is connected to the outside of the support, the pressing part moves upward after the stamping is completed, and the end of the support loses its support. Under the downward pull of the reset spring, the support is pulled to a horizontal position. At this time, the top of the support is in contact with the top limit block, so that the support is always kept in a horizontal state, which is convenient for one side of the sheet metal to be placed on the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the lower die base of the utility model in the open state;

[0017] Figure 3 This is a schematic diagram of the half-section structure of the utility model;

[0018] Figure 4 yes Figure 3 Schematic diagram of the locally enlarged structure in .

[0019] In the figure, 1, upper die base; 1a, connecting plate; 1b, shock absorber; 1c, upper pressure plate; 1d, lower pressure part; 2, lower die base; 2a, lower pressure plate; 2a1, lower insert; 2b, cutting block; 2c, nitrogen spring; 3, positioning bracket; 3a, support member; 3b, limit block; 3c, return spring; 4, positioner; 4a, fixing member; 4b, guide slope; 5, positioning rod; 6, forming surface. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] Example

[0022] like Figure 1 Combine Figure 2 As shown, a stamping die with a positioning device includes an upper die base 1 and a lower die base 2, the top of the upper die base 1 is provided with a fixed connecting plate 1a, the lower die base 2 is provided with a fixed positioning bracket 3, the lower die base 2 is provided with a lower pressure plate 2a, the lower pressure plate 2a is provided with a detachable lower insert 2a1, the top of the lower pressure plate 2a is provided with a fixed locator 4 and a positioning rod 5, the top of the locator 4 and the positioning rod 5 are provided with a guide slope 4b, the locator 4 is provided with a rotatable fixing part 4a, and the locator 4 and the positioning rod 5 are respectively provided on the peripheral side of the lower insert 2a1.

[0023] like Figure 3 Combine Figure 4 As shown, a forming surface 6 is provided between the upper pressing plate 1c and the lower insert 2a1, and the forming surface 6 is stepped. A fixed shock absorber 1b is provided on the connecting plate 1a, and the bottom of the shock absorber 1b is connected to the upper pressing plate 1c. A nitrogen spring 2c is provided between the lower die base 2 and the lower pressing plate 2a. A fixed cutting block 2b is provided on the lower die base 2, and one end of the cutting block 2b extends through the lower pressing plate 2a and the lower insert 2a1 to the bottom of the forming surface 6. The positioning bracket 3 is provided on the lower side close to the forming surface 6, and the upper end of the positioning bracket 3 is provided. A hinged support member 3a is provided inside, and the support member 3a is flush with the higher side of the forming surface 6. A pressing portion 1d is provided at the bottom of the upper mold base 1, and the pressing portion 1d can abut against the support member 3a and push the support member 3a to rotate. A return spring 3c is connected to the side of the support member 3a away from the forming surface 6, and the other end of the return spring 3c is connected to the bottom of the positioning bracket 3. A limit block 3b is provided on the top of the positioning bracket 3. When one end of the support member 3a abuts against the limit block 3b, the support member 3a remains in a horizontal state.

[0024] The working principle of this scheme is as follows: Figure 1-4As shown, the locator 4, the positioning rod 5 and the positioning bracket 3 are used to fix the position of the sheet metal on the forming surface 6, wherein the guide slope 4b on the top of the locator 4 and the positioning rod 5 guides the sheet metal. When the sheet metal contacts the guide slope 4b, it can slide to the inner bottom of the locator 4 and the positioning rod 5, which can make it more convenient to place the sheet metal. The sheet metal above the lower side of the forming surface 6 will slide onto the support 3a, so that the sheet metal remains in a horizontal state before stamping. Then the fixing part 4a on the locator 4 rotates to press the sheet metal firmly, so that the position of the sheet metal is fixed. During the process of the upper pressing plate 1c pressing down, the pressing part 1d on the upper die seat 1 can press down and push the support 3a to rotate downward. At the same time, the pressing part 1d drives the sheet metal on the support 3a to bend downward. Since the other sides of the sheet metal are fixed by the locator 4, the sheet metal will not move when pressed down, avoiding defective products caused by the movement of the sheet metal during the stamping process, and improving the stability of the sheet metal placed in the mold.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0026] Although this article frequently uses terms such as 1. upper die base; 1a. connecting plate; 1b. shock absorber; 1c. upper pressure plate; 1d. lower pressure portion; 2. lower die base; 2a. lower pressure plate; 2a1. lower insert; 2b. cutting block; 2c. nitrogen spring; 3. positioning bracket; 3a. support member; 3b. limit block; 3c. return spring; 4. positioner; 4a. fixing member; 4b. guide slope; 5. positioning rod; 6. forming surface, the possibility of using other terms is not excluded. The use of these terms is merely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A stamping die with a positioning device, comprising an upper die base (1) and a lower die base (2), wherein the upper die base (1) is provided with a fixed upper pressing plate (1c) at the bottom, the lower die base (2) is provided with a lower pressing plate (2a) capable of longitudinal movement, the lower pressing plate (2a) is provided with a lower insert (2a1) therein, a forming surface (6) is provided between the upper pressing plate (1c) and the lower insert (2a1), and the forming surface (6) is stepped, characterized in that: The lower die base (2) is provided with a fixed positioning bracket (3), the positioning bracket (3) is provided on the lower side close to the forming surface (6), the upper end of the positioning bracket (3) is provided with a hinged support member (3a), the support member (3a) is flush with the higher side of the forming surface (6), the lower pressing plate (2a) is provided with a plurality of fixed positioners (4) and positioning rods (5), the positioners (4) and positioning rods (5) are respectively provided on the peripheral side of the lower insert (2a1), the tops of the positioners (4) and positioning rods (5) are provided with guiding inclined surfaces (4b), and the positioners (4) are provided with a rotatable fixing member (4a).

2. A stamping die with a positioning device according to claim 1, characterized in that: A pressing portion (1d) is provided at the bottom of the upper die seat (1), and the pressing portion (1d) can abut against the support member (3a) and push the support member (3a) to rotate. A return spring (3c) is connected to the side of the support member (3a) away from the forming surface (6), and the other end of the return spring (3c) is connected to the bottom of the positioning bracket (3).

3. A stamping die with a positioning device according to claim 2, characterized in that: A limiting block (3b) is provided on the top of the positioning bracket (3); when one end of the support member (3a) abuts against the limiting block (3b), the support member (3a) maintains a horizontal state.

4. The stamping die with a positioning device according to claim 1, characterized in that: A fixed cutting block (2b) is provided on the lower die base (2), and one end of the cutting block (2b) passes through the lower pressing plate (2a) and the lower insert (2a1) and extends to the bottom of the forming surface (6).

5. A stamping die with a positioning device according to claim 4, characterized in that: A plurality of nitrogen springs (2c) are provided between the lower pressure plate (2a) and the lower die base (2), a plurality of shock absorbers (1b) are provided between the upper die base (1) and the upper pressure plate (1c), and a plurality of fixed connection plates (1a) are provided on the top of the shock absorbers (1b).

6. The stamping die with a positioning device according to claim 1, characterized in that: The upper pressing plate (1c) is detachably connected to the upper die base (1), and the lower insert (2a1) is detachably connected to the lower pressing plate (2a).

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