Relay contact 90 degree correction device and progressive die

Abstract

The utility model discloses a relay contact patch 90 degree correction device and a progressive die. Adopted technical scheme includes: 90 degree correction work position, 90 degree correction work position includes lower fixed core, upper fixed core, rotates core, stamping core and reset spring, the square support part for fixing relay contact patch is equipped with on the lower fixed core upper end, two upper fixed cores are oppositely arranged on the upper side of the lower fixed core, the rotating core is rotatably arranged in the lower end of the upper fixed core through the upper end pivot, the protruding part for pressing fixed relay contact patch is equipped with on the lower end inner side of the oblique face of stamping of rotating core upper end outside, the stamping core is used for the first stamping oblique face of the rotating core.

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 5 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 the two ends of the workpiece, thus forming a 90-degree bend. A drawback is that, due to the elasticity of the copper contact piece, it is difficult to achieve a precise 90-degree angle using a traditional single-bend method. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a 90-degree correction device for relay contacts and a progressive die.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a 90-degree correction station, which includes a lower fixed core, an upper fixed core, a rotating core, a stamping core, and a return spring. The upper end of the lower fixed core is provided with a square support for fixing the relay contact. Two upper fixed cores are arranged opposite each other on the upper sides of the lower fixed core. The rotating core is rotatably disposed at the lower end of the upper fixed core via a rotating shaft at the upper end. The outer side of the upper end of the rotating core is provided with a stamping inclined surface, and the inner side of the lower end is provided with a protrusion for applying pressure to fix the relay contact. The stamping core is used to stamp the first stamping inclined surface of the rotating core. The return spring is disposed between the rotating core and the upper fixed core.

[0005] The square support part has a negative corner clearance groove on its side.

[0006] The negative angle clearance groove is -1° to -3°.

[0007] The upper fixed core is provided with a slot, and the stamped core is inserted into the slot.

[0008] A spring groove is provided between the rotating core and the upper fixed core, and the reset spring is disposed in the spring groove.

[0009] The lower inner side of the stamping core is provided with a second stamping inclined surface that cooperates with the first stamping inclined surface.

[0010] The stamped core and the lower fixed core are provided with pin grooves.

[0011] A progressive die includes an upper die and a lower die, wherein the upper die and the lower die are provided with the aforementioned relay contact 90-degree correction device.

[0012] Advantages of the relay contact 90-degree correction device and progressive die of this utility model: After the progressive die performs a 90-degree bend stamping on the relay contact at the 90-degree stamping station, it continues to pass through this 90-degree correction station structure to correct the 90-degree bend of the fixed relay contact, thereby improving the stamping accuracy; in addition, this 90-degree correction station structure has good stability, simple structure, and is easy to install.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the 90-degree correction device for relay contact of this utility model; Figure 2 This is a schematic diagram of the rotating core of this utility model; Figure 3 This is a schematic diagram of the structure of the stamped core of this utility model; Figure 4 This is a schematic diagram of the progressive die of this utility model; Figure 5 This is a schematic diagram of the structure of the relay contact of this utility model. Detailed Implementation Example 1:

[0015] like Figure 1-5 As shown, the relay contact 90-degree correction device of this utility model includes a 90-degree correction station 1, which includes a lower fixed core 2, an upper fixed core 3, a rotating core 4, a stamping core 5, and a return spring 6. The upper end of the lower fixed core 2 is provided with a square support portion 8 for fixing the relay contact 7. Two upper fixed cores 3 are arranged opposite each other on the upper sides of the lower fixed core 2. The rotating core 4 is rotatably disposed at the lower end of the upper fixed core 3 via a rotating shaft 9 at its upper end. The outer side of the upper end of the rotating core 4 is provided with a stamping inclined surface 10, and the inner side of the lower end of the rotating core 4 is provided with a protrusion 11 for applying pressure to fix the relay contact 7. The stamping core 5 is used to stamp the first stamping inclined surface 10 of the rotating core 4, and the return spring 6 is disposed between the rotating core 4 and the upper fixed core 3. After the bent relay contact 7 is placed on the square support part 8, the stamping core 5 presses down, driving the rotating core 4 to rotate, so that the protrusion 11 applies pressure to both ends of the relay contact 7 to complete the correction work.

[0016] Preferably, the square support portion 8 has a negative angle relief groove 12 on its side. The negative angle relief groove 12 is -1° to -3°, ideally 2°. By setting the negative angle relief groove 12, during stamping, the relay contact 7 can be bent to 91-93 degrees first, and then restored to 90 degrees or infinitely close to 90 degrees by the relay contact 7 itself, so as to achieve the purpose of precise stamping.

[0017] Preferably, the upper fixing core 3 is provided with a slot 13, and the stamping core 5 is inserted into the slot 13. This makes the stamping of the stamping core 5 more stable and precise.

[0018] Preferably, a spring groove 14 is provided between the rotating core 4 and the upper fixed core 3, and the return spring 6 is disposed within the spring groove 14 to improve the stability of the return spring 6.

[0019] Preferably, the lower inner side of the stamping core 5 is provided with a second stamping inclined surface 15 that cooperates with the first stamping inclined surface 10, so as to facilitate stamping.

[0020] Preferably, the stamping core 5 and the lower fixed core 2 are provided with pin grooves 16. By inserting a fixing pin into the pin groove 16, the stamping core 5 and the lower fixed core 2 can be stably fixed on the template. Example 2:

[0021] like Figure 1-5 As shown, the progressive die of this utility model includes an upper die plate 17 and a lower die plate 18. The upper die plate 17 and lower die plate 18 are equipped with the relay contact 90-degree correction device described in Embodiment 1. Specifically, the lower fixing core 2 and the upper fixing core 3 are respectively fixed to the lower die plate 18 and the upper die plate 17, and the stamping core 5 is fixed to the pressure plate 19 above the upper die plate 17. The stamping power of the upper die plate 17 and the lower die plate 18 is provided by a punch press, which is known technology and will not be described in detail here.

[0022] 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 relay contact 90-degree correction device, comprising a 90-degree correction station (1), characterized in that: The 90-degree correction station (1) includes a lower fixed core (2), an upper fixed core (3), a rotating core (4), a stamping core (5), and a return spring (6). The upper end of the lower fixed core (2) is provided with a square support part (8) for fixing the relay contact (7). Two upper fixed cores (3) are arranged opposite to each other on the upper sides of the lower fixed core (2). The rotating core (4) is rotatably provided at the lower end of the upper fixed core (3) via the upper rotating shaft (9). The outer side of the upper end of the rotating core (4) is provided with a stamping inclined surface (10), and the inner side of the lower end is provided with a protrusion (11) for applying pressure to fix the relay contact (7). The stamping core (5) is used to stamp the first stamping inclined surface (10) of the rotating core (4). The return spring (6) is arranged between the rotating core (4) and the upper fixed core (3).

2. The relay contact 90-degree correction device according to claim 1, characterized in that: The square support part (8) is provided with a negative angle relief groove (12) on its side.

3. The relay contact 90-degree correction device according to claim 2, characterized in that: The negative angle relief groove (12) is negative 1°-3°.

4. The relay contact 90-degree correction device according to claim 1, characterized in that: The upper fixed core (3) is provided with a slot (13), and the stamped core (5) is inserted into the slot (13).

5. The relay contact 90-degree correction device according to claim 1, characterized in that: A spring groove (14) is provided between the rotating core (4) and the upper fixed core (3), and the reset spring (6) is disposed in the spring groove (14).

6. The relay contact 90-degree correction device according to claim 1, characterized in that: The lower inner side of the stamping core (5) is provided with a second stamping inclined surface (15) that cooperates with the first stamping inclined surface (10).

7. The relay contact 90-degree correction device according to claim 1, characterized in that: The stamping core (5) and the lower fixed core (2) are provided with pin grooves (16).

8. A progressive die, comprising an upper die plate (17) and a lower die plate (18), characterized in that: The upper template (17) and lower template (18) are provided with a relay contact 90-degree correction device as described in any one of claims 1-7.

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