Part stamping die convenient to demould

Abstract

The utility model relates to the technical field of stamping dies, in particular to a part stamping die convenient to demould, which comprises a base, a lower die is detachably mounted on the upper surface of the base, an ejection frame is arranged in the base in an up-down sliding manner, an ejection plate is fixedly connected to the upper end of the ejection frame, and the ejection plate is positioned below the lower die. A telescopic rod is fixedly mounted on the upper surface of the base, a movable seat is fixedly connected to the lower end of the telescopic rod, and an upper die is detachably mounted on the lower surface of the movable seat. The part stamping die convenient to demold can knock a formed workpiece, can demold conveniently and is worthy of popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping die for parts which is easy to demould. Background Art

[0002] Stamping dies are special process equipment used to process materials into parts during cold stamping. Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform the material, thereby obtaining the desired parts. After stamping, the workpiece will easily get stuck in the mold cavity and needs to be demolded. Generally, demolding is achieved by knocking on the outer wall of the mold, but this can easily damage the workpiece. Utility Model Content

[0003] The utility model aims to solve the defect in the prior art that knocking the outer wall of a mold for demoulding may damage a workpiece, and proposes a component stamping mold which is convenient for demoulding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A component stamping die that is easy to demould is designed, comprising a base, a lower die is detachably mounted on the upper surface of the base, an ejector frame is slidably arranged inside the base, a top plate is fixedly connected to the upper end of the ejector frame, the top plate is located below the lower die, a telescopic rod is fixedly mounted on the upper surface of the base, a movable seat is fixedly connected to the lower end of the telescopic rod, and an upper die is detachably mounted on the lower surface of the movable seat.

[0006] Preferably, a receiving cavity is provided inside the base, and a striking member is fixedly installed inside the receiving cavity.

[0007] Preferably, the knocking member includes a fixing plate, which is fixedly installed in the accommodating cavity, a striking rod is slidably arranged inside the fixing plate, an iron block is fixedly installed at the lower end of the striking rod, an electromagnet that can cooperate with the iron block is fixedly installed at the bottom of the accommodating cavity, a spring is sleeved on the outer side of the upper end of the striking rod, the upper end of the spring is fixedly connected to the upper end of the striking rod, and the lower end is fixedly connected to the fixing plate.

[0008] Preferably, the top plate further includes linkage members fixedly connected at both ends.

[0009] Preferably, the linkage part includes a knocking plate, a connecting block is fixedly installed on the end of the knocking plate, grooves are opened at both ends of the top plate, the end of the connecting block is rotatably set in the groove, a torsion spring is sleeved on the outer side of the end of the connecting block, one end of the torsion spring is fixedly connected to the outer surface of the end of the connecting block, and the other end is fixedly connected to the inner wall of the groove.

[0010] Preferably, a support block is fixedly mounted on surfaces of the top plate and the knock plate that are close to each other, and the support block is located below the connecting block.

[0011] Preferably, a flexible pad is fixedly mounted on surfaces of the top plate and the knock plate that are close to each other, and the flexible pad is located above the connecting block.

[0012] The utility model proposes a stamping die for parts that is easy to demould, and the beneficial effect is that during the working process, the stamping die for parts that is easy to demould can control the on and off of the power supply inside the electromagnet, so that the elastic action of the knock rod spring can be driven to continuously knock the top plate, and the top plate will transmit the knocking effect to the workpiece, so that a gap is generated between the workpiece and the inner wall of the lower die, resulting in separation, and the workpiece separated from the lower die can be easily ejected upward by the top plate, and will not cause damage to the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a stamping die for parts that is easy to demould, proposed by the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0015] Figure 3 This is a schematic structural diagram of a top plate and a connecting block in a component stamping die that is easy to demould, as proposed by the utility model;

[0016] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0017] Figure 5 The utility model discloses a structural schematic diagram of a striking piece in a component stamping die which is convenient for demoulding.

[0018] In the figure: 1, base; 2, lower mold; 3, movable seat; 4, upper mold; 5, telescopic rod; 6, top plate; 7, connecting block; 71, torsion spring; 8, knock plate; 81, groove; 9, ejector frame; 10, accommodating cavity; 11, fixed plate; 12, iron block; 13, electromagnet; 14, striking rod; 15, spring; 16, flexible pad; 17, support block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Example 1

[0021] Reference Figure 1-2 and Figure 5 A stamping die for parts that is easy to demould comprises a base 1, a lower die 2 is detachably mounted on the upper surface of the base 1, an ejector frame 9 is slidably mounted inside the base 1, the ejector frame 9 is connected to an external power device, and the ejector frame 9 can be driven to move by the external power device, a top plate 6 is fixedly connected to the upper end of the ejector frame 9, and the movement of the ejector frame 9 can drive the top plate 6 to move, the top plate 6 is located below the lower die 2, and the movement of the top plate 6 can eject the workpiece upward from the lower die 2. A telescopic rod 5 is fixedly mounted on the upper surface of the base 1, a movable seat 3 is fixedly connected to the lower end of the telescopic rod 5, and the movable seat 3 can be driven to move up and down by the telescopic rod 5, an upper die 4 is detachably mounted on the lower surface of the movable seat 3, and the upper die 4 can be driven to move up and down by the movement of the movable seat 3, and the upper die 4 and the lower die 2 are conveniently disassembled, so that different upper dies 4 and lower dies 2 can be replaced according to needs.

[0022] The base 1 has a receiving cavity 10, and a striking piece is fixedly installed inside the receiving cavity 10. The striking piece can strike the top plate 6, and the top plate 6 transmits the striking effect to the formed workpiece, so that a gap can be generated between the workpiece and the lower die 2, and the workpiece can be easily ejected from the lower die 2. The striking piece includes a fixed plate 11, and the fixed plate 11 is fixedly installed in the receiving cavity 10. A striking rod 14 is slidably arranged inside the fixed plate 11, and an iron block 12 is fixedly installed at the lower end of the striking rod 14. An electromagnet 13 that can cooperate with the iron block 12 is fixedly installed at the bottom of the receiving cavity 10. A spring 15 is sleeved on the outer side of the upper end of the striking rod 14. The upper end of the spring 15 is fixedly connected to the upper end of the striking rod 14, and the lower end is fixedly connected to the fixed plate 11. Under the elastic action of the spring 15, the striking rod 14 tends to move upward. When the power supply is turned on inside the electromagnet 13, the electromagnet 13 generates suction, the iron block 12 is attracted to the electromagnet 13, the striking rod 14 is away from the top plate 6, and the spring 15 is compressed. When the power supply is turned off inside the electromagnet 13, the suction inside the electromagnet 13 disappears, and the iron block 12 and the striking rod 14 will move quickly to one side of the top plate 6 under the elastic action of the spring 15, and the end of the striking rod 14 will knock on the top plate 6. The power supply inside the electromagnet 13 is repeatedly turned on and off, and the striking rod 14 will continuously knock on the top plate 6. The top plate 6 will transmit the knocking effect to the formed workpiece, so that when the workpiece is struck, a gap is generated between the outer surface of the workpiece and the inner wall of the lower mold 2, so that the workpiece can be easily ejected through the top plate 6.

[0023] Working principle: During the working process of the stamping die for parts that are easy to demould, the workpiece to be stamped is placed in the lower die 2, and the telescopic rod 5 is started to drive the movable seat 3 and the upper die 4 to move downward. The upper die 4 can stamp the workpiece to be impacted, and the formed workpiece will stay in the lower die 2. The power supply inside the electromagnet 13 is continuously connected and disconnected. The striking rod 14 will continuously knock the top plate 6 under the elastic action of the spring 15, and the top plate 6 will transfer the knocking effect to the workpiece, so that a gap is generated between the workpiece and the inner wall of the lower die 2 to separate them. Small-amplitude knocking will not cause damage to the workpiece. The external power device is started to drive the ejector frame 9 to move, and the movement of the ejector frame 9 will drive the top plate 6 to move. The movement of the top plate 6 will eject the formed workpiece upward from the lower die 2 to complete the demoulding work.

[0024] Example 2

[0025] When the knock rod 14 knocks the top plate 6, since the top plate 6 does not move, the top plate 6 may not be able to effectively transmit the knocking force of the knock rod 14 to the workpiece, resulting in the workpiece being unable to be effectively separated from the inner wall of the lower mold 2 after being knocked. For this reason, this embodiment is proposed. Figure 1-4 As another preferred embodiment of the utility model, on the basis of embodiment 1, the top plate 6 also includes a linkage member fixedly connected at both ends, the linkage member includes a knocking plate 8, a connecting block 7 is fixedly installed at the end of the knocking plate 8, grooves 81 are opened at both ends of the top plate 6, and the end of the connecting block 7 is rotatably set in the groove 81. The knocking plate 8 can rotate around the top plate 6 through the connecting block 7. A torsion spring 71 is sleeved on the outer side of the end of the connecting block 7. One end of the torsion spring 71 is fixedly connected to the outer surface of the end of the connecting block 7, and the other end is fixedly connected to the inner wall of the groove 81. Under the elastic action of the torsion spring 71, the knocking plate 8 will always have a tendency to move downward away from the lower mold 2.

[0026] A support block 17 is fixedly installed on the surface where the top plate 6 and the knock plate 8 are close to each other. The support block 17 is located below the connection block 7. The support block 17 can provide support between the top plate 6 and the knock plate 8, and can keep the knock plate 8 flush with the top plate 6 under the action of the torsion spring 71, so as to avoid affecting the flatness of the bottom of the workpiece. A flexible pad 16 is fixedly installed on the surface where the top plate 6 and the knock plate 8 are close to each other. The flexible pad 16 is located above the connection block 7. The flexible pad 16 can be compressed. The flexible pad 16 will deform during the squeezing process, but the flexible pad 16 will not deform when it is not compressed. Because the distance between the top plate 6 and the knock plate 8 is small and the thickness of the flexible pad 16 is thin, the rotation angle of the knock plate 8 will be relatively small due to restrictions, so that a small-amplitude knocking of the workpiece can be achieved, which can avoid damage to the workpiece and effectively separate the workpiece from the inner wall of the lower mold.

[0027] When the knocking rod 14 strikes, it will directly strike the knocking plate 8. At the moment the knocking plate 8 is struck, the torsion spring 71 will be deformed, and the knocking plate 8 will rotate toward the side close to the workpiece through the connecting block 7. The flexible pad 16 will be squeezed, and the support blocks 17 will be separated. However, the rotation angle of the knocking plate 8 is small. Then, when the knocking effect of the knocking rod 14 disappears, the knocking plate 8 will rotate toward the side away from the workpiece again under the elastic support of the torsion spring 71. The support blocks 17 are in contact with each other, and the flexible pad 16 is not squeezed. In this way, the knocking plate 8 can be used to repeatedly strike the workpiece with a small amplitude, so that the workpiece can be separated from the inner wall of the lower mold 2, making it convenient to eject the workpiece through the top plate 6.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stamping die for parts that is easy to demould, comprising a base (1), characterized in that: A lower mold (2) is detachably mounted on the upper surface of the base (1); an ejector frame (9) is slidably mounted inside the base (1); a top plate (6) is fixedly connected to the upper end of the ejector frame (9); the top plate (6) is located below the lower mold (2); a telescopic rod (5) is fixedly mounted on the upper surface of the base (1); a movable seat (3) is fixedly connected to the lower end of the telescopic rod (5); an upper mold (4) is detachably mounted on the lower surface of the movable seat (3); The base (1) has an accommodating chamber (10) formed inside, and a striking member is fixedly installed inside the accommodating chamber (10); The striking member comprises a fixing plate (11), the fixing plate (11) being fixedly mounted in the accommodating cavity (10), a striking rod (14) being slidably arranged inside the fixing plate (11), an iron block (12) being fixedly mounted at the lower end of the striking rod (14), an electromagnet (13) which can cooperate with the iron block (12) being fixedly mounted at the bottom of the accommodating cavity (10), a spring (15) being sleeved on the outer side of the upper end of the striking rod (14), the upper end of the spring (15) being fixedly connected to the upper end of the striking rod (14), and the lower end of the spring (15) being fixedly connected to the fixing plate (11).

2. The part stamping die for easy demoulding according to claim 1, characterized in that: The top plate (6) also includes linkage members fixedly connected at both ends.

3. The part stamping die for easy demoulding according to claim 2, characterized in that: The linkage member comprises a knock plate (8), a connecting block (7) is fixedly mounted on the end of the knock plate (8), grooves (81) are provided at both ends of the top plate (6), the end of the connecting block (7) is rotatably arranged in the groove (81), a torsion spring (71) is sleeved on the outer side of the end of the connecting block (7), one end of the torsion spring (71) is fixedly connected to the outer surface of the end of the connecting block (7), and the other end is fixedly connected to the inner wall of the groove (81).

4. The component stamping die for easy demoulding according to claim 3, characterized in that: A support block (17) is fixedly mounted on surfaces of the top plate (6) and the knock plate (8) that are close to each other, and the support block (17) is located below the connection block (7).

5. The component stamping die for easy demoulding according to claim 4, characterized in that: A flexible pad (16) is fixedly mounted on surfaces of the top plate (6) and the knock plate (8) that are close to each other, and the flexible pad (16) is located above the connecting block (7).

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