Breaker shell riveting pipe one-die multi-piece flanging die

Abstract

The utility model discloses a one-die multi-piece flanging die for a riveting pipe of a circuit breaker shell, which is characterized in that a convex die (4) is fixed on a convex die fixing plate (2) and penetrates through a hole groove in the middle of a push plate (3), and the bottom end of the convex die (4) is a cone with a downward tip end; the female die (5) comprises a hole groove matched with the cone, a push rod (17) is arranged on the lower portion in the hole groove, and a spring ejector block (18) is arranged below the push rod (17). More than two male dies (4) are arranged on the male die fixing plate (2), and the number of the female dies (5) is equal to that of the male dies (4). Compared with the prior art, the flanging die has the advantages that the one-die multi-piece die is adopted, more than ten pieces can be simultaneously flanged at one time, the structures of the lower die, the upper die buffer and the lower die buffer are improved, and production practice proves that the process scheme is reasonable in design, the die structure is compact, the working process is reliable and safe, the operation is convenient and simple, the labor intensity of staff is reduced, and the production cost is saved.

Description

Technical Field

[0001] This utility model relates to a multi-piece flanging mold for rivet tubes of circuit breaker housings, belonging to the technical field of stamping flanging. Background Technology

[0002] The casing riveting tube is one of the key components of a circuit breaker. Its processing involves wire cutting to a certain length, followed by riveting at one end. Patent application number 202321412674.3 discloses a circuit breaker casing riveting tube flanging mold. The mold's punch is fixed to a punch fixing plate and passes through a slot in the middle of the unloading plate. The bottom end of the punch is a cone with its pointed end facing downwards. The die is a frustum formed by splicing two halves, with the upper diameter of the frustum being larger than the lower diameter. A slot is opened in the middle of the frustum to mate with the cone. A spring top block is placed at the lower end of the die, and the lower end of the spring top block elastically contacts a spring. This equipment can automatically flanging the circuit breaker casing riveting tube. However, the inventors found that this technology still has shortcomings: firstly, it can only clamp one piece at a time, resulting in low production efficiency and not meeting current processing requirements; secondly, cracking, bending, and bulging still occur, and the quality needs improvement. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides a multi-piece flanging mold for circuit breaker housing riveting tubes, aiming to solve the problems of low processing efficiency and low yield.

[0004] This utility model provides a multi-piece flanged mold for rivet tubes on circuit breaker housings.

[0005] The punch is fixed on the punch fixing plate and passes through the hole in the middle of the push plate. The bottom end of the punch is a cone with the tip pointing downwards.

[0006] The die includes a slot that mates with the cone, a push rod is provided below the slot, and a spring top block is provided below the push rod;

[0007] The punch fixing plate is provided with two or more punches, and the number of dies is equal to the number of punches.

[0008] The push plate is connected to the upper mold by fastening screws. The push plate is connected to the punch fixing plate, the upper pad plate and the upper mold in sequence from bottom to top by fastening screws. The die is embedded in the die positioning plate. The die positioning plate is connected to the positioning plate, the thickening plate, the lower pad plate and the lower mold in sequence from top to bottom by fastening pins. The upper mold and the lower mold are connected by guide pillars.

[0009] The punch fixing plate is provided with 8-16 punches.

[0010] The punch fixing plate is provided with 10-14 punches.

[0011] The die positioning plate is equipped with a limiting rod.

[0012] A buffer spring and a spring guide rod are provided between the upper mold and the push plate.

[0013] Due to the adoption of the above technical solution, the advantages of this utility model are as follows: It uses a multi-piece mold, realizing the simultaneous flanging of more than 10 pieces in one operation. The structure of the lower mold and the buffer between the upper and lower molds has been improved. Production practice has proven that this process design is reasonable, the mold structure is compact, the operation is reliable and safe, and the operation is convenient and simple. It reduces the labor intensity of employees, saves production costs, increases the yield from 85% to 98%, and improves production efficiency by 1-2 times (calculating the difference between loading and unloading time), resulting in significant economic benefits for the enterprise. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention.

[0015] The attached diagram shows the following components: upper pad 1, punch fixing plate 2, push plate 3, punch 4, die 5, die positioning plate 6, fastening pin 7, positioning plate 8, thickened plate 9, lower pad 10, lower die 11, upper die 12, guide post 13, fastening screw 14, buffer spring 15, spring guide rod 16, push rod 17, spring top block 18, and limit rod 19. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0017] like Figure 1 As shown, this utility model discloses a multi-piece flanged die for a circuit breaker housing riveting tube.

[0018] The punch 4 is fixed on the punch fixing plate 2 and passes through the hole in the middle of the push plate 3. The bottom end of the punch 4 is a cone with the tip pointing downwards.

[0019] The die 5 includes a slot that mates with the cone, and a push rod 17 is provided below the slot. A spring top block 18 is provided below the push rod 17. Using a complete slot as the die 5 provides better impact resistance, more accurate positioning, and more stable and reliable stamping.

[0020] The punch fixing plate 2 is provided with two or more punches 4, and the number of dies 5 is equal to that of the punches 4.

[0021] The push plate 3 is connected to the upper mold 12 by fastening screws 14. The push plate 3 is connected to the punch fixing plate 2, the upper pad plate 1 and the upper mold 12 in sequence from bottom to top by fastening screws 14. The die 5 is embedded in the die positioning plate 6. The die positioning plate 6 is connected to the positioning plate 8, the thickening plate 9, the lower pad plate 10 and the lower mold 11 in sequence from top to bottom by fastening pins 7. The upper mold 12 and the lower mold 11 are connected by guide posts 13.

[0022] The punch fixing plate 2 is provided with 8-16 punches 5.

[0023] Even better, the punch fixing plate 2 is provided with 10-14 punches 5.

[0024] The die positioning plate 6 is provided with a limiting rod 19.

[0025] A buffer spring 15 and a spring guide rod 16 are provided between the upper die 12 and the push plate 3, which can reduce the impact of the stamping force, adjust the stamping height, protect the punch, and extend the die life.

[0026] During stamping, the rivet tube is placed inside the die cavity 5. The upper die 12 and the punch fixing plate 2 slowly descend. The push plate 3 first presses down on the die cavity positioning plate 6, gradually pressing the die cavity 5 into the die cavity positioning plate 6. As the punch 4 continues to descend, the lower end of the cone of the punch 4 enters the middle of the rivet tube. As the upper pad plate 1 continuously applies pressure, the punch 5 flangs the rivet tube. After the flanging is completed, the upper pad plate 1 depresses and rises. The push plate 3 and the die cavity positioning plate 6 gradually rise. The spring top block 18 gradually rebounds and pushes the die cavity 5 out of the die cavity positioning plate 6, and the finished rivet tube can be taken out. Example

[0027] like Figure 1 As shown, this utility model discloses a multi-piece flanged die for a circuit breaker housing riveting tube.

[0028] The punch 4 is fixed on the punch fixing plate 2 and passes through the hole in the middle of the push plate 3. The bottom end of the punch 4 is a cone with the tip pointing downwards.

[0029] The die 5 includes a slot that mates with the cone, and a push rod 17 is provided below the slot. A spring top block 18 is provided below the push rod 17. Using a complete slot as the die 5 provides better impact resistance, more accurate positioning, and more stable and reliable stamping.

[0030] The punch fixing plate 2 is provided with 12 punches 4, and the number of concave dies 5 is equal to that of the punches 4.

[0031] The push plate 3 is connected to the upper mold 12 by fastening screws 14. The push plate 3 is connected to the punch fixing plate 2, the upper pad plate 1 and the upper mold 12 in sequence from bottom to top by fastening screws 14. The die 5 is embedded in the die positioning plate 6. The die positioning plate 6 is connected to the positioning plate 8, the thickening plate 9, the lower pad plate 10 and the lower mold 11 in sequence from top to bottom by fastening pins 7. The upper mold 12 and the lower mold 11 are connected by guide posts 13.

[0032] A buffer spring 15 and a spring guide rod 16 are provided between the upper mold 12 and the push plate 3.

[0033] The working process is the same as in Example 1.

Claims

1. A multi-piece flanged die for a circuit breaker housing riveting tube, characterized in that: The punch (4) is fixed on the punch fixing plate (2) and passes through the hole in the middle of the push plate (3). The bottom end of the punch (4) is a cone with the tip pointing downwards. The die (5) includes a slot that mates with the cone. A push rod (17) is provided below the slot, and a spring top block (18) is provided below the push rod (17). The die (5) is made of a complete slot. The punch fixing plate (2) is provided with two or more punches (4), and the number of dies (5) is equal to that of the punches (4); The push plate (3) is connected to the upper mold (12) by fastening screws (14). The push plate (3) is connected to the punch fixing plate (2), the upper pad plate (1) and the upper mold (12) from bottom to top by fastening screws (14). The die (5) is embedded in the die positioning plate (6). The die positioning plate (6) is connected to the positioning plate (8), the thickening plate (9), the lower pad plate (10) and the lower mold (11) from top to bottom by fastening pins (7). The upper mold (12) and the lower mold (11) are connected by guide pillars (13). The die positioning plate (6) is provided with a limiting rod (19); a buffer spring (15) and a spring guide rod (16) are provided between the upper die (12) and the push plate (3).

2. The multi-piece flanged die for circuit breaker housing riveting tubes according to claim 1, characterized in that: The punch fixing plate (2) is provided with 8-16 punches (4).

3. The multi-piece flanged die for circuit breaker housing riveting tubes according to claim 2, characterized in that: The punch fixing plate (2) is provided with 10-14 punches (4).

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