Injection molding mold for high-reliability molded case circuit breaker surface cover

Abstract

The utility model relates to a high-reliability injection molding mold of a molded case circuit breaker surface cover, which comprises a mold frame, a movable mold plate, a movable mold core, a static mold plate, a static mold core, a hot runner plate, a panel and a top plate assembly, a mold cavity used for injection molding of the surface cover is formed between the movable mold core and the static mold core, and a mold opening and closing counter is arranged on the movable mold plate. The static mold plate is provided with an induction piece matched with the mold opening and closing counter, one end of the induction piece is provided with a fixing part fixed to the static mold plate, and the other end of the induction piece is provided with an induction part matched with the mold opening and closing counter. And a sensing part of the sensing piece is close to a sensor of the mold opening and closing counter. The utility model has the advantages of simple structure, stable and reliable performance, high production efficiency and high reliability.

Description

Technical Field

[0001] This utility model relates to an injection molding mold, specifically to an injection molding mold for a high-reliability plastic case circuit breaker faceplate. Background Technology

[0002] Molded case circuit breakers (MCCBs) are widely used in industry, agriculture, transportation, mining, civil construction, and national defense, playing a significant role in power transmission and distribution and motor protection. They are among the most widely used low-voltage electrical products. An MCCB is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and also capable of closing, carrying, and interrupting current under abnormal circuit conditions (including short-circuit conditions) within a specified time. During production, the MCCB cover needs to be manufactured using injection molding molds. Existing injection molding molds for MCCB covers lack mold opening and closing counting functions, making it impossible to rationally schedule mold replacement and maintenance time. This makes it impossible to avoid production interruptions and product quality problems caused by mold wear, thus affecting production efficiency and equipment utilization. Summary of the Invention

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide an injection molding mold for a highly reliable molded case circuit breaker faceplate that is simple in structure, stable and reliable in performance, and has high production efficiency.

[0004] To achieve the above objectives, this utility model employs a highly reliable injection molding mold for a molded case circuit breaker faceplate, comprising a mold frame, a movable mold plate disposed on the mold frame, a movable mold core disposed within the movable mold plate, a stationary mold plate disposed on the movable mold plate, a stationary mold core disposed within the stationary mold plate, a hot runner plate disposed on the stationary mold plate, a panel disposed on the hot runner plate, and a top plate assembly slidably disposed within the mold frame. A mold cavity for injection molding the faceplate is formed between the movable mold core and the stationary mold core. An opening / closing counter is disposed on the movable mold plate, and a sensor that cooperates with the opening / closing counter is disposed on the stationary mold plate. One end of the sensor has a fixing part fixed to the stationary mold plate, and the other end of the sensor has a sensing part that cooperates with the opening / closing counter. When the movable mold plate and the stationary mold plate are closed, the sensing part of the sensor is close to the sensor of the opening / closing counter.

[0005] The beneficial effects of the above structure are as follows: An opening and closing counter, which works in conjunction with the sensing element of the stationary mold plate, is installed on the moving mold plate. This counter records the number of times the mold is used in real time, helping companies accurately grasp the mold's usage status, rationally schedule mold replacement and maintenance, and avoid production interruptions and product quality problems caused by mold wear. This improves production efficiency and equipment utilization. By monitoring the mold's usage status in real time, companies can adjust production plans and resource allocation promptly, reducing production costs. Precise counting and real-time monitoring ensure the mold operates in optimal condition, thereby improving product quality and stability. Therefore, this injection molding mold has the advantages of simple structure, stable and reliable performance, high production efficiency, and high reliability.

[0006] Specifically, the top plate assembly includes a bottom plate slidably disposed within the mold frame, a top plate linked to the bottom plate, and a plurality of ejector pins linked to the top plate. The ejector pins move with the top plate, and each ejector pin is inserted into the mold cavity and abuts against the molded top cover. The ejector pins' movement with the top plate and their insertion into the mold cavity, along with their contact with the molded top cover, facilitate demolding of the top cover, thereby improving the production efficiency of the injection molding mold.

[0007] Specifically, two guide pillars are symmetrically arranged within the mold frame. The bottom plate and top plate each have two guide holes that mate with the two guide pillars. The two guide pillars are inserted into the two guide holes, forming a sliding connection between the bottom plate / top plate and the two guide pillars. The two guide pillars guide the bottom plate / top plate, ensuring reliable operation and thus improving the reliability of the injection molding mold.

[0008] Specifically, the stationary template is rotatably equipped with a locking element, and the moving template is equipped with a locking bolt that mates with the locking element. The locking element is equipped with a locking groove that mates with the locking bolt. The locking groove engages with the locking bolt, forming a snap-fit ​​connection between the locking bolt and the locking element. After the moving and stationary templates are closed, the locking groove of the locking element engages with the locking bolt, thereby locking the moving and stationary templates and improving the mold closing reliability of the injection molding die.

[0009] Specifically, the panel contains a sprue cup, one end of which is inserted into the hot runner. The panel has a sprue port connected to the sprue cup, and a positioning ring is provided on the panel corresponding to the sprue port. The positioning ring on the panel, which mates with the injection molding machine, facilitates the installation of the injection mold and the injection molding machine, making installation more convenient. Attached Figure Description

[0010] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0011] Figure 2 This is a cross-sectional view of an embodiment of the present utility model.

[0012] Figure 3 This is an exploded view of an embodiment of the present utility model. Detailed Implementation

[0013] like Figures 1-3 As shown, this utility model embodiment is an injection molding mold for a high-reliability molded case circuit breaker faceplate, including a mold frame 10, a movable template 11 disposed on the mold frame 10, a movable mold core 12 disposed within the movable template 11, a stationary template 13 disposed on the movable template 11, a stationary mold core 14 disposed within the stationary template 13, a hot runner plate 15 disposed on the stationary template 13, a panel 16 disposed on the hot runner plate 15, and a top plate assembly 20 slidably disposed within the mold frame 10. The movable mold core 12 and the stationary mold core 14 form a mold for injection molding the faceplate. The model cavity 100 of 30 has an opening and closing mold counter 31 on the moving template 11 and a sensing element 32 that cooperates with the opening and closing mold counter 31 on the stationary template 13. One end of the sensing element 32 has a fixing part 321 fixed on the stationary template 13, and the other end of the sensing element 32 has a sensing part 322 that cooperates with the opening and closing mold counter 31. When the moving template 11 and the stationary template 13 are closed, the sensing part 322 of the sensing element 32 is close to the sensor 311 of the opening and closing mold counter 31.

[0014] like Figure 2 and 3As shown, the top plate assembly 20 includes a bottom plate 21 slidably disposed within the mold frame 10, a top plate 22 linkedly disposed on the bottom plate 21, and a plurality of ejector pins 23 linkedly disposed on the top plate 22. The plurality of ejector pins 23 move with the top plate 22, and are respectively inserted into the mold cavity 100 and abut against the top cover 30. The plurality of ejector pins move with the top plate and are inserted into the mold cavity, and abut against the molded top cover, thereby facilitating demolding of the top cover and improving the production efficiency of the injection molding mold. Two guide pillars 101 are symmetrically arranged within the mold frame 10. The bottom plate 21 and the top plate 22 are respectively provided with two guide holes 200 that cooperate with the two guide pillars 101. The two guide pillars 101 are inserted into the two guide holes 200, forming a sliding connection between the bottom plate 21, the top plate 22, and the two guide pillars 101. Two guide pillars guide the bottom and top plates, ensuring their reliable operation and thus improving the reliability of the injection mold. A locking element 17 is rotatably mounted on the stationary mold plate 13, and a locking bolt 18 mates with the locking element 17 on the moving mold plate 11. The locking element 17 has a locking groove 171 that engages with the locking bolt 18, forming a snap-fit ​​connection. After the moving and stationary mold plates are closed, the locking groove of the locking element engages with the locking bolt, locking the moving and stationary mold plates and further improving the mold closing reliability of the injection mold. The panel 16 contains a sprue cup 161, one end of which is inserted into the hot runner 151 of the hot runner 15. The panel 16 has a sprue 162 communicating with the sprue cup 161, and a positioning ring 19 is provided on the panel 16 corresponding to the sprue 162. The positioning ring on the panel, which mates with the injection molding machine, facilitates the installation of the injection mold and the injection molding machine, making installation more convenient.

[0015] An opening and closing counter is installed on the moving mold platen, which works in conjunction with the sensing element of the stationary mold platen. This counter records the number of times the mold is used in real time, helping companies accurately understand its usage and rationally schedule mold replacement and maintenance. This avoids production interruptions and product quality issues caused by mold wear, thereby improving production efficiency and equipment utilization. By monitoring the mold's usage status in real time, companies can adjust production plans and resource allocation promptly, reducing production costs. Precise counting and real-time monitoring ensure the mold operates in optimal condition, thus improving product quality and stability. Therefore, this injection molding mold has the advantages of simple structure, stable and reliable performance, high production efficiency, and high reliability.

Claims

1. An injection molding mold for a high-reliability molded case circuit breaker faceplate, characterized in that: The system includes a mold base, a movable mold plate mounted on the mold base, a movable mold core disposed within the movable mold plate, a stationary mold plate mounted on the movable mold plate, a stationary mold core disposed within the stationary mold plate, a hot runner plate mounted on the stationary mold plate, a panel disposed on the hot runner plate, and a top plate assembly slidably disposed within the mold base. The movable mold core and the stationary mold core form a mold cavity for injection molding a cover. The movable mold plate is equipped with an opening and closing counter, and the stationary mold plate is equipped with a sensor that cooperates with the opening and closing counter. One end of the sensor has a fixing part fixed to the stationary mold plate, and the other end of the sensor has a sensing part that cooperates with the opening and closing counter. When the movable mold plate and the stationary mold plate are closed, the sensing part of the sensor is close to the sensor of the opening and closing counter.

2. The injection molding mold for the high-reliability molded case circuit breaker cover according to claim 1, characterized in that: The top plate assembly includes a bottom plate slidably disposed within the mold frame, a top plate linked to the bottom plate, and multiple ejector pins linked to the top plate. The multiple ejector pins move with the top plate and are respectively inserted into the mold cavity and abut against the top cover.

3. The injection molding mold for the high-reliability molded case circuit breaker cover according to claim 2, characterized in that: The mold frame is symmetrically provided with two guide pillars. The bottom plate and the top plate are respectively provided with two guide holes that cooperate with the two guide pillars. The two guide pillars are inserted into the two guide holes and form a sliding connection between the bottom plate, the top plate and the two guide pillars.

4. The injection molding mold for the high-reliability molded case circuit breaker cover according to claim 1 or 2, characterized in that: The static template is rotatably equipped with a locking element, the moving template is equipped with a locking bolt that cooperates with the locking element, the locking element is equipped with a locking groove that cooperates with the locking bolt, the locking groove is engaged with the locking bolt, and a snap-fit ​​engagement is formed between the locking bolt and the locking element.

5. The injection molding mold for the high-reliability molded case circuit breaker faceplate according to claim 1 or 2, characterized in that: The panel is provided with a pouring cup, one end of which is inserted into the hot runner. The panel is provided with a pouring port that communicates with the pouring cup, and a positioning ring is provided on the panel corresponding to the pouring port.

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