Relay contact 90 degree stamping station and progressive die

Abstract

This utility model discloses a 90-degree stamping station and progressive die for relay contacts that is less likely to scratch the surface of the workpiece or damage its internal metallographic structure. The technical solution includes: a 90-degree stamping station, which includes a fixed core and movable cores that stamp towards both sides of the fixed core. The fixed core is fixed to the lower template and has at least a square support portion at its upper end for fixing the relay contact. The movable core is oppositely arranged on the upper template and has rollers on its lower inner side. When the movable core stamps downward, the rollers first contact the relay contact.

Description

Technical Field

[0001] This utility model belongs to the field of stamping dies, and in particular relates to a relay contact progressive die. Background Technology

[0002] The structure of traditional relay contacts (moving or stationary contacts) is typically as follows: Figure 4 As shown, the contact piece has two 90-degree bends in the middle, typically formed by die stamping. A traditional relay contact progressive die includes an upper die and a lower die, with 90-degree bend stations within both. These 90-degree bend stations consist of a fixed core in the lower die and a movable core in the upper die. During stamping, the workpiece is automatically or manually placed on top of the fixed core. Then, the upper die presses down, causing the movable core to press against both ends of the workpiece, forming a 90-degree bend. The disadvantage is that the collision between the movable core and the workpiece is rigid, easily causing scratches on the workpiece surface and damage to the internal metallographic structure, thus affecting the workpiece's appearance, strength, and conductivity. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a 90-degree stamping station and progressive die for relay contacts that is not easy to scratch the surface of the workpiece or damage the internal metallographic structure of the workpiece.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a 90-degree punching station, wherein the 90-degree punching station includes a fixed core and a movable core punching towards both sides of the fixed core. The fixed core is fixed on the lower template and has at least a square support portion at its upper end for fixing the relay contact piece. The movable core is oppositely arranged on the upper template and has a roller on its lower inner side. When the movable core punches downward, the roller first contacts the relay contact piece.

[0005] The lower inner side of the movable core is provided with a stamping groove, and the upper end of the stamping groove is provided with an arc-shaped surface. The roller is rotatably disposed at the lower end of the stamping groove.

[0006] The square support section has positioning grooves on both sides.

[0007] The fixed core and the movable core are provided with pin grooves.

[0008] A progressive die includes an upper template and a lower template, wherein the upper template and the lower template are provided with the aforementioned relay contact progressive die.

[0009] The advantages of the 90-degree stamping station and progressive die for relay contacts of this utility model are: when the moving core is stamped downwards, the roller contacts the relay contact first, changing the rigid collision to sliding pressure, which can effectively avoid scratches on the surface of the workpiece and damage to the internal metallographic structure.

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the 90-degree stamping station of the relay contact of this utility model; Figure 2 This is a schematic diagram of the structure of the movable core of this utility model; Figure 3 This is a schematic diagram of the progressive die of this utility model; Figure 4 This is a schematic diagram of the structure of the relay contact of this utility model. Detailed Implementation

[0012] Example 1: like Figure 1-4 As shown, the relay contact 90-degree stamping station of this utility model includes a 90-degree stamping station 3, which includes a fixed core 4 and movable cores 5 stamped towards both sides of the fixed core 4. The fixed core 4 is fixed to the lower template 2, and its upper end is provided with a square support part 7 for fixing the relay contact 6. The movable core 5 is disposed opposite to the upper template 1, and a roller 8 is provided on the inner side of the lower end of the movable core 5. The length of the roller 8 is the same as or slightly longer than the width of the relay contact 6. When the movable core 5 is stamped downward, the surface of the roller 8 first contacts the relay contact 6, so that the roller 8 rolls while applying pressure to the relay contact 6. The relay contact 6 can be a moving contact or a stationary contact of a three-phase relay.

[0013] Preferably, the lower inner side of the movable core 5 is provided with a stamping groove 9, and the upper end of the stamping groove 9 is provided with an arc-shaped surface 10. The roller 8 is rotatably disposed at the lower end of the stamping groove 9. When the stamping is in place, the arc-shaped surface 10 at the upper end of the stamping groove 9 applies pressure to the bend of the relay contact 6, so that the bend forms a more complete arc angle.

[0014] Preferably, the square support portion 7 is provided with positioning grooves 11 on both sides for positioning the relay contact 6 after both ends are bent into place.

[0015] Preferably, the fixed core 4 and the movable core 5 are provided with pin grooves 12. By inserting a fixing pin into the pin groove 12, the fixed core 4 and the movable core 5 can be fixed to the lower template 2 and the upper template 1, respectively.

[0016] Example 2: like Figure 1-4As shown, the progressive die of this utility model includes an upper template 1 and a lower template 2, and the upper template 1 and the lower template 2 are provided with the relay contact progressive die described in embodiment 1. Specifically: the fixed core 4 and the movable core 5 are respectively embedded into the core holes of the upper template 1 and the lower template 2, and fixed by fixing pins.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A 90-degree stamping station for relay contacts, comprising a 90-degree stamping station (3), characterized in that: The 90-degree stamping station (3) includes a fixed core (4) and a movable core (5) that is stamped on both sides of the fixed core (4). The fixed core (4) is fixed on the lower template (2) and has at least a square support part (7) for fixing the relay contact (6) at the upper end. The movable core (5) is arranged opposite to the upper template (1) and has a roller (8) on the inner side of the lower end. When the movable core (5) is stamped downward, the roller (8) first contacts the relay contact (6).

2. The 90-degree stamping station for relay contacts according to claim 1, characterized in that: The lower inner side of the movable core (5) is provided with a stamping groove (9), and the upper end of the stamping groove (9) is provided with an arc-shaped surface (10). The roller (8) is rotatably provided at the lower end of the stamping groove (9).

3. The 90-degree stamping station for relay contacts according to claim 1, characterized in that: The square support part (7) is provided with positioning grooves (11) on both sides.

4. The 90-degree stamping station for relay contacts according to claim 1, characterized in that: The fixed core (4) and the movable core (5) are provided with pin grooves (12).

5. A progressive die, comprising an upper die plate (1) and a lower die plate (2), characterized in that: The upper template (1) and lower template (2) are provided with a 90-degree stamping station for the relay contact as described in any one of claims 1-4.

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