Stamping die for producing U-shaped hanging plate

Abstract

The utility model relates to the technical field of electric power fittings, in particular to a stamping die for producing a U-shaped hanging plate. Comprising a lower die body and an upper die, a stamping head is arranged on the upper die, a forming groove with a semicircular cross section is formed in the middle of the top face of the lower die body, a jacking head structure used for demolding is further arranged on the lower die body, side pressing blocks are rotationally connected to the two sides, above the forming groove, of the lower die body, and one side of each side pressing block is a forming face. Blocking strips are arranged on the two sides of the forming face, a supporting plate is arranged at one end of the side pressing block, when the forming face is in a horizontal state, the lower end of the supporting plate makes contact with the top face of the lower die body, the punching head can press down the inner end of the forming face to enable the side pressing block to rotate, and therefore the two sides of the hanging plate can be formed. The die further comprises a reset structure enabling the forming face to automatically return to the horizontal state, and positioning plates are arranged on the two sides of the lower die body. The stamping stroke and the demolding stroke of the die can be small.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power hardware, in particular to a stamping die for producing U-shaped hanging plates. Background Art

[0002] Figure 6 The figure shows a U-shaped hanging plate 6, which is a commonly used electrical hardware. In production, it is formed by stamping. The current stamping die uses a deeper cavity on the lower die and a punch head on the upper die. When in use, the blank 5 (the shape of the blank 5 is as shown in FIG. 5 ) is pressed. Figure 4 As shown in the figure, the blank 5 is placed flat on the top surface of the lower mold, and then the punch head presses down to press the blank 5 into the cavity for molding. Due to the high height of the hanging plate 6, the punching stroke and the demoulding stroke are both large, which invisibly reduces the efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stamping die for producing U-shaped hanging plates in view of the above-mentioned technical deficiencies.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a stamping die for producing U-shaped hanging plates, comprising a lower die body and an upper die, a punching head is arranged on the upper die, a molding groove with a semicircular cross-section is arranged in the middle of the top surface of the lower die body, and a head structure for demoulding is also arranged on the lower die body, and side pressure blocks are rotatably connected on both sides of the lower die body above the molding groove, one side of the side pressure block is a molding surface, and baffles are arranged on both sides of the molding surface, and a support plate is arranged at one end of the side pressure block, and when the molding surface is in a horizontal state, the lower end of the support plate contacts with the top surface of the lower die body, and the punching head can press down the inner end of the molding surface to make the side pressure block rotate so as to form the two sides of the hanging plate, and also includes a reset structure for automatically returning the molding surface to a horizontal state, and positioning plates are arranged on both sides of the lower die body.

[0005] Preferably, columns are provided on both sides of the top surface of the lower mold body, shaft holes are provided on the columns, and rotating shafts for rotationally connecting with the shaft holes are provided on both sides of the side pressure block.

[0006] Preferably, accommodating grooves are provided on both sides of the lower mold body, a pull plate is provided on the outer side of the bottom of the accommodating groove, a hanging hole is provided on the pull plate, and a hanging hole is also provided on the support plate. The two ends of the tension spring are respectively connected to the two hanging holes to form a reset structure that automatically returns the molding surface to a horizontal state.

[0007] Preferably, an inclined surface is provided on the inner side of one end of the baffle away from the forming surface to facilitate placing the blank between the two baffles.

[0008] Preferably, an inclined surface is provided on the inner side of one end of the positioning plate away from the lower mold body to facilitate placing the blank between the two positioning plates.

[0009] Compared with the prior art, the utility model has the following advantages: a molding groove is provided on the lower mold body and side pressure blocks are rotatably connected on both sides above the lower mold body. When the punch head is pressed down, the side pressure blocks can be pushed to rotate so that both sides of the hanging plate can be molded. When the side pressure blocks are reset by the reset structure, the hanging plate lifted by the top head structure for a certain distance can be lifted up for demoulding. Therefore, the stamping stroke and the demoulding stroke can be smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a schematic diagram of the structure of a stamping die for producing U-shaped hanging plates.

[0011] Figure 2 Schematic diagram of the structure of the lower mold.

[0012] Figure 3 It is a schematic diagram of the structure of the side pressure block.

[0013] Figure 4 Schematic diagram of the structure when the blank is placed on the side pressure block in preparation for stamping.

[0014] Figure 5 It is a schematic diagram of the structure of the mold when the hanging plate is stamped.

[0015] Figure 6 This is a schematic diagram of the structure of the hanging board.

[0016] In the figure: 1. lower mold body; 11. column; 12. forming groove; 13. head structure; 14. accommodating groove; 15. pull plate; 2. positioning plate; 3. side pressure block; 31. support plate; 32. baffle; 33. rotating shaft; 4. punch head; 5. blank; 6. hanging plate. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0018] Specific implementation method: Combination Figure 1-5As shown, a stamping die for producing a U-shaped hanging plate comprises a lower die body 1 and an upper die, a punch head 4 is arranged on the upper die, a molding groove 12 with a semicircular cross section is arranged in the middle of the top surface of the lower die body 1, which is used to mold the semicircular part of the lower end of the hanging plate 6, and a head structure 13 for demoulding is also arranged on the lower die body 1, and the head structure 13 can lift the hanging plate 6 upward after the stamping is completed, and the lower die body 1 is rotatably connected with side pressure blocks 3 on both sides above the molding groove 12, one side of the side pressure block 3 is a molding surface, and baffles are arranged on both sides of the molding surface 32, the distance between the two baffles 32 is slightly larger than the width of the blank 5, a support plate 31 is provided at one end of the side pressure block 3, when the forming surface is in a horizontal state, the lower end of the support plate 31 contacts the top surface of the lower mold body 1, the punch head 4 can press the inner end of the forming surface down to rotate the side pressure block 3 so that the two sides of the hanging plate 6 can be formed, and also includes a reset structure that automatically restores the forming surface to a horizontal state, positioning plates 2 are provided on both sides of the lower mold body 1, the distance between the two positioning plates 2 is slightly larger than the length of the blank 5, and the two positioning plates 2 are symmetrically distributed about the forming groove 12.

[0019] Preferably, the pin structure 13 includes a pin, and the bottom surface of the molding groove 12 is provided with a step hole matching the pin. A pressure spring is provided between the pin and the bottom surface of the lower mold body 1 to lift the pin so that it protrudes from the bottom surface of the molding groove 12. During stamping, the pin can be pressed down.

[0020] Specifically, columns 11 are provided on both sides of the top surface of the lower mold body 1 , shaft holes are provided on the columns 11 , and rotating shafts 33 for rotationally connecting with the shaft holes are provided on both sides of the side pressure block 3 .

[0021] Preferably, the lower mold body 1 is provided with accommodating grooves 14 on both sides, and the accommodating grooves 14 are used to accommodate the tension springs. A pull plate 15 is provided on the outer side of the bottom of the accommodating grooves 14, and a hanging hole is provided on the pull plate 15. The support plate 31 is also provided with a hanging hole. The two ends of the tension spring (not shown in the figure) are respectively connected to the two hanging holes to form a reset structure that automatically returns the molding surface to a horizontal state. When no external force is applied, the tension spring can pull the support plate 31 downward to make it contact with the top surface of the lower mold body 1.

[0022] Preferably, the inner side of the end of the stop bar 32 away from the forming surface is provided with an inclined surface for facilitating the placement of the blank 5 between the two stop bars 32. The inner side of the end of the positioning plate 2 away from the lower mold body 1 is provided with an inclined surface for facilitating the placement of the blank 5 between the two positioning plates 2. This makes it easier to place the blank 5 at the position to be stamped.

[0023] When in use, the stamping die needs to be installed on the stamping equipment, wherein the lower die body is stationary, and the upper die can be driven by the stamping equipment to move up and down. The stamping die is initially in the state shown in FIG. 1, and then the blank 5 can be placed on the forming surface, and the blank 5 is located between the two stop bars 32 and the two positioning plates 2 to become Figure 4 The punch head 4 is then driven downward by the punching equipment until the blank 5 is punched and formed into Figure 5 After the punch head 4 is in contact with the blank 5, the side pressure block 3 will rotate. When the punch head 4 presses the blank 5 tightly in the forming groove 12 to form the semicircular part of the lower end of the hanging plate 6, the two sides of the hanging plate 6 are also pressed by the side pressure blocks 3 on the side of the punch head 4 to complete the forming. Since the middle and upper parts of the two sides of the hanging plate 6 are pressed and formed by the rotation of the side pressure blocks 3, the stroke of the punch head 4 is reduced; then the punch head 4 rises and returns to its original position, and the hanging plate 6 is lifted up a certain distance by the head under the action of the pressure spring, and then the side pressure block 3 automatically resets. During the resetting process of the side pressure block 3, its inner end supports the middle or lower part of the semicircular shape of the hanging plate 6 to lift the hanging plate 6 upward. Therefore, the stroke of the head structure 13 can also be much smaller than the stroke of demoulding in the prior art, and then the hanging plate 6 can be removed and a new blank 5 can be placed on it for the next round of stamping operation.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A stamping die for producing a U-shaped hanging plate, comprising a lower die body (1) and an upper die, wherein a stamping head (4) is arranged on the upper die, and characterized in that: A molding groove (12) with a semicircular cross-section is provided in the middle of the top surface of the lower mold body (1), and a head structure (13) for demoulding is also provided on the lower mold body (1). The lower mold body (1) is rotatably connected to side pressure blocks (3) on both sides above the molding groove (12), one side of the side pressure block (3) is a molding surface, and baffles (32) are provided on both sides of the molding surface. A support plate (31) is provided at one end of the side pressure block (3). When the molding surface is in a horizontal state, the lower end of the support plate (31) contacts the top surface of the lower mold body (1), and the punch head (4) can press down the inner end of the molding surface so that the side pressure block (3) rotates so as to mold the two sides of the hanging plate (6). It also includes a reset structure for automatically returning the molding surface to a horizontal state. Positioning plates (2) are provided on both sides of the lower mold body (1).

2. A stamping die for producing a U-shaped hanging plate according to claim 1, characterized in that: The top surface of the lower mold body (1) is provided with upright posts (11) on both sides, and the upright posts (11) are provided with shaft holes. The side pressure blocks (3) are provided with rotating shafts (33) for rotationally connecting with the shaft holes on both sides.

3. A stamping die for producing U-shaped hanging plates according to claim 1, characterized in that: The lower mold body (1) is provided with accommodating grooves (14) on both sides, a pull plate (15) is provided on the outer side of the bottom of the accommodating groove (14), the pull plate (15) is provided with a hanging hole, and the support plate (31) is also provided with a hanging hole, and the two ends of the tension spring are respectively connected to the two hanging holes to form a reset structure that automatically returns the molding surface to a horizontal state.

4. A stamping die for producing a U-shaped hanging plate according to any one of claims 1 to 3, characterized in that: An inclined surface is provided on the inner side of one end of the baffle (32) away from the forming surface, which facilitates placing the blank (5) between the two baffles (32).

5. A stamping die for producing U-shaped hanging plates according to any one of claims 1 to 3, characterized in that: An inclined surface is provided on the inner side of one end of the positioning plate (2) away from the lower mold body (1) to facilitate placing the blank (5) between the two positioning plates (2).

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