Injection mold for a circuit breaker handle

Abstract

The utility model belongs to injection mold field, concretely relates to a kind of injection mold of circuit breaker handle, including movable mould frame and movable mould plate and movable mould core and static mould plate and static mould core and static mould seat plate, multiple model cavities are formed between movable mould core and static mould core, two slider mechanisms are set on movable mould plate corresponding multiple model cavities two sides, each slider mechanism includes slide and two pull plate and slider, two pull plate one end respectively has bending guide portion, two inclined guide holes that can be used for the bending guide portion of two pull plate to pass through are respectively provided on slide, slider is slidably arranged in movable mould core and is linked with slide cooperation, multiple limit grooves are respectively provided at the multiple model cavities of slider one side, and inclined surface is respectively provided at the two sides of multiple limit grooves;The slider mechanism of injection mold adopts double slider structure design, and the structure design is simple, and the number of parts is less, and assembly debugging is more convenient, slider mechanism follows the mold opening action of movable mould plate, realizes lateral core-pulling, and production efficiency is higher.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to an injection mold for a circuit breaker handle. Background Technology

[0002] Miniature circuit breakers, also known as micro circuit breakers, are suitable for overload and short-circuit protection of AC 50 / 60Hz lines with a rated voltage of 230 / 400V and a rated current up to 63A. They can also be used for infrequent switching of circuits under normal conditions. Miniature circuit breakers are mainly used in various places such as industrial, commercial, high-rise buildings, and residential buildings. A miniature circuit breaker includes a handle, operating mechanism, contact system, and arc-extinguishing system. In the manufacturing process, the handle of a miniature circuit breaker needs to be made using injection molding molds.

[0003] The existing injection mold for miniature circuit breaker handles has a complex slider mechanism design with a large number of parts. Assembly and debugging are cumbersome, and multiple parts need to be strictly matched. Assembly is time-consuming and relies on skilled technicians, resulting in low production efficiency of the injection mold. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide an injection mold for a circuit breaker handle.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An injection mold for a circuit breaker handle includes a moving mold frame, a moving template disposed on the moving mold frame, a moving mold core disposed within the moving template, a stationary template disposed on the moving template, a stationary mold core disposed within the stationary template, and a stationary mold base plate disposed on the stationary template. Multiple mold cavities are formed between the moving mold core and the stationary mold core. Two slider mechanisms are disposed on both sides of the moving template corresponding to the multiple mold cavities. Each slider mechanism includes a sliding plate disposed on the moving template, two pull plates disposed on the stationary template, and a slider. One end of each of the two pull plates has a bending guide portion. The sliding plate is provided with two oblique guide holes through which the bending guide portions of the two pull plates can pass. The slider is slidably disposed within the moving mold core and is linked with the sliding plate. Multiple limiting grooves are provided on one side of the slider corresponding to the multiple mold cavities. Guide slopes are provided on both sides of the multiple limiting grooves.

[0006] In some embodiments, the slide plate and the slider are connected by an "I"-shaped snap-fit ​​component. The slide plate is provided with a snap-fit ​​groove that engages with one end of the snap-fit ​​component, and the slider is provided with a snap-fit ​​groove that engages with the other end of the snap-fit ​​component.

[0007] In some embodiments, the moving template has two guide plates on both sides of the slide plate, and two guide grooves are formed between the two guide plates and the moving template. The slide plate has two guide protrusions that are slidably disposed in the two guide grooves on both sides.

[0008] In some embodiments, the other end of the two pull plates has a snap-fit ​​block, the stationary template is provided with limiting grooves that snap onto the snap-fit ​​blocks of the two pull plates, and the stationary template is provided with bolts that connect to the snap-fit ​​blocks.

[0009] In some embodiments, a sprue cup is provided on the stationary mold base plate, and a positioning ring is provided on the stationary mold base plate surrounding the sprue cup.

[0010] In some embodiments, a main runner connected to the sprue cup is provided between the moving mold core and the stationary mold core, and multiple branch runners are provided between the moving mold core and the stationary mold core, the multiple branch runners being connected between the main runner and multiple mold cavities.

[0011] In some embodiments, an ejector pin assembly is slidably disposed within the moving mold frame. The ejector pin assembly includes a push plate slidably disposed within the moving mold frame, an ejector pin plate linked to the push plate, and multiple ejector pins linked to the ejector pin plate. The ejector pin plate drives the multiple ejector pins to pass sequentially through the moving mold plate and the moving mold core, and to be inserted into multiple mold cavities respectively.

[0012] In some embodiments, the ejector plate is provided with multiple ejector rods in linkage, and the ejector plate drives the multiple ejector rods to pass through the moving template and the moving mold core in sequence and to be inserted into the main runner.

[0013] In some embodiments, the ejector plate is provided with multiple guide posts, the upper ends of which pass through the guide holes of the moving template. Multiple springs are respectively fitted on the multiple guide posts, and the two ends of the multiple springs abut against the ejector plate and the moving template.

[0014] In some embodiments, the moving mold core is provided with a plurality of positioning grooves in a rectangular array on the side facing the stationary mold core, and the stationary mold core is provided with a plurality of positioning protrusions that engage with the plurality of positioning grooves.

[0015] The beneficial effects of this utility model are as follows: The slider mechanism of this injection mold adopts a double slider structure design. The slider mechanism follows the mold opening action of the moving platen to achieve lateral core pulling, thereby effectively improving the production efficiency of the injection mold. The slider mechanism has a simple structural design, fewer parts, and is more convenient for assembly and debugging. During mold opening, the moving platen performs the mold opening action, and the bending guide part of the pull plate drives the slide plate to slide on the moving platen. The slide plate drives the slider to be pulled out, thereby realizing the lateral core pulling of the injection mold. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 This is an exploded view of an embodiment of the present utility model;

[0020] Figure 4 This is a perspective view of the static template according to an embodiment of the present utility model;

[0021] Figure 5 This is a perspective view of the pull plate in an embodiment of the present utility model;

[0022] Figure 6 This is a perspective view of the skateboard according to an embodiment of the present utility model. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0027] like Figure 1-6 As shown, an injection mold for a circuit breaker handle includes a moving mold frame 1, a moving template 2 disposed on the moving mold frame 1, a moving mold core 3 disposed within the moving template 2, a stationary template 4 disposed on the moving template 2, a stationary mold core 5 disposed within the stationary template 4, and a stationary mold base plate 6 disposed on the stationary template 4. Multiple mold cavities 100 are formed between the moving mold core 3 and the stationary mold core 5. Two slider mechanisms 7 are disposed on both sides of the multiple mold cavities 100 on the moving template 2. Each slider mechanism 7 includes a sliding plate 71 slidably disposed on the moving template 2, two pull plates 72 disposed on the stationary template 4, and a slider 73. One end of each of the two pull plates 72 has a bending guide portion 721. The sliding plate 71 is provided with two oblique guide holes 711 through which the bending guide portions 721 of the two pull plates 72 can pass. The slider 73 is slidably disposed within the moving mold core 3 and is linked with the sliding plate 71. Multiple limiting grooves 731 are provided on one side of the slider 73 corresponding to the multiple mold cavities 100, and guide slopes 732 are provided on both sides of the multiple limiting grooves 731.

[0028] like Figure 2 , 6 As shown, a "H"-shaped locking member 74 connects the slide plate 71 and the slider 73. The slide plate 71 has a locking groove 712 that engages with one end of the locking member 74, and the slider 73 has a locking groove 731 that engages with the other end of the locking member 74. The slide plate and slider are engaged by the locking member, facilitating their assembly and ensuring more reliable transmission. Two guide plates 75 are provided on the moving template 2 corresponding to both sides of the slide plate 71. Two guide grooves 751 are formed between the two guide plates 75 and the moving template 2. Two guide protrusions 713 are slidably disposed within the two guide grooves 751 on both sides of the slide plate 71. The two guide plates on the moving template guide the slide plate, ensuring reliable sliding of the slide plate within the moving template. The other end of each of the two pull plates 72 has a locking block 722. The stationary template 4 is provided with limiting grooves 41 that engage with the locking blocks 722 of the two pull plates 72. The stationary template 4 is provided with bolts 42 that connect with the locking blocks 722. The two pull plates are engaged in the limiting grooves of the stationary template through the locking blocks, which facilitates the assembly of the two pull plates with the stationary template.

[0029] like Figure 1-3 As shown, a sprue cup 61 is provided on the stationary mold base plate 6, and a positioning ring 62 is provided on the stationary mold base plate 6 surrounding the sprue cup 61. The positioning ring serves a positioning function, engaging with the injection molding machine, thus facilitating the installation of the injection mold and the injection molding machine, making installation more convenient. A main runner 101 connected to the sprue cup 61 is provided between the moving mold core 3 and the stationary mold core 5, and multiple branch runners 102 are provided between the moving mold core 3 and the stationary mold core 5, connecting the main runner 101 and multiple mold cavities 100. The injection mold adopts a multi-cavity structure design, which helps to improve the production efficiency of the injection mold.

[0030] like Figure 2 and 3 As shown, an ejector assembly 8 is slidably disposed within the moving mold base 1. The ejector assembly 8 includes a push plate 81 slidably disposed within the moving mold base 1, an ejector plate 82 linked to the push plate 81, and multiple ejector pins 83 linked to the ejector plate 82. The ejector plate 82 drives the multiple ejector pins 83 to pass sequentially through the moving mold plate 2 and the moving mold core 3, and to be inserted into multiple mold cavities 100 respectively. The ejector assembly can push the circuit breaker handle out of the mold cavity, thereby improving the demolding efficiency of the injection mold. Multiple ejector rods 84 are linkedly disposed on the ejector plate 82. The ejector plate 82 drives the multiple ejector rods 84 to pass sequentially through the moving mold plate 2 and the moving mold core 3, and to be inserted into the main runner 101 respectively. During mold opening, the ejector plate drives the multiple ejector rods to pass through the main runner, and the multiple ejector pins can eject the waste material in the main runner, thereby clearing the waste material from the main runner and improving the production efficiency of the injection mold. Multiple guide posts 85 are provided on the ejector plate 82. The upper ends of the guide posts 85 pass through the guide holes 21 of the moving template 2. Multiple springs 86 are respectively fitted on the guide posts 85, and the two ends of the springs 86 abut against the ejector plate 82 and the moving template 2. The multiple guide posts guide the ejector plate, and the multiple springs ensure that the ejector plate can reliably return to its original position.

[0031] like Figure 3 As shown, the moving mold core 3 has multiple positioning grooves 31 arranged in a rectangular array on the side facing the stationary mold core 5, and the stationary mold core 5 has multiple positioning protrusions 51 that engage with the multiple positioning grooves 31. The moving mold core engages with the multiple positioning protrusions of the stationary mold core through the multiple positioning grooves, thereby ensuring that the injection mold can reliably open and close.

[0032] The slider mechanism of this injection mold adopts a double-slider structure design. The slider mechanism follows the opening action of the moving platen to achieve lateral core pulling, thereby effectively improving the production efficiency of the injection mold. The slider mechanism has a simple structure, fewer parts, and is easier to assemble and debug. The guide slope on the slider acts as a guide, ensuring that the slider can reliably perform the core pulling action and ensuring reliable mold opening and closing. During mold opening, the moving platen performs the opening action, and the bending guide part of the pull plate drives the slide plate to slide on the moving platen. The slide plate drives the slider to pull out, thus achieving lateral core pulling of the injection mold.

[0033] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A plastic injection mold for a circuit breaker handle, comprising a movable mold frame, a movable mold plate arranged on the movable mold frame, a movable mold core arranged in the movable mold plate, a stationary mold plate arranged on the movable mold plate, a stationary mold core arranged in the stationary mold plate, and a stationary mold base plate arranged on the stationary mold plate, characterized in that: Multiple model cavities are formed between the moving mold core and the stationary mold core. Two slider mechanisms are provided on both sides of the moving mold core corresponding to the multiple model cavities. Each slider mechanism includes a sliding plate that is slidably disposed on the moving mold core and two pull plates and a slider disposed on the stationary mold core. One end of each of the two pull plates has a bending guide portion. The sliding plate is provided with two oblique guide holes through which the bending guide portions of the two pull plates can pass. The slider is slidably disposed in the moving mold core and is linked with the sliding plate. Multiple limiting grooves are provided on one side of the slider corresponding to the multiple model cavities. Guide slopes are provided on both sides of the multiple limiting grooves.

2. The injection mold for a circuit breaker handle of claim 1, wherein: The slide plate and the slider are connected by an "I"-shaped snap-fit ​​component. The slide plate is provided with a snap-fit ​​groove that engages with one end of the snap-fit ​​component, and the slider is provided with a snap-fit ​​groove that engages with the other end of the snap-fit ​​component.

3. The injection mold for a circuit breaker handle of claim 1 or 2, wherein: The moving template has two guide plates on both sides corresponding to the slide plate, and two guide grooves are formed between the two guide plates and the moving template. The slide plate has two guide protrusions that are slidably disposed in the two guide grooves on both sides.

4. The injection mold for a circuit breaker handle of claim 1 or 2, wherein: The other end of the two pull plates has a snap-fit ​​block, and the stationary template is respectively provided with a limiting groove that snaps into the snap-fit ​​block of the two pull plates. The stationary template is provided with a bolt that connects to the snap-fit ​​block.

5. The injection mold for a circuit breaker handle of claim 1, wherein: The stationary mold base plate is provided with a sprue cup, and the stationary mold base plate is provided with a positioning ring surrounding the sprue cup.

6. The injection mold for a circuit breaker handle of claim 5, wherein: A main runner connected to the sprue cup is provided between the moving mold core and the stationary mold core. Multiple branch runners are provided between the moving mold core and the stationary mold core, and the multiple branch runners are connected between the main runner and multiple mold cavities.

7. The injection mold for a circuit breaker handle of claim 6, wherein: The moving mold frame is slidably provided with an ejector pin assembly. The ejector pin assembly includes a push plate slidably provided in the moving mold frame, an ejector pin plate linked to the push plate, and multiple ejector pins linked to the ejector pin plate. The ejector pin plate drives the multiple ejector pins to pass through the moving mold plate and the moving mold core in sequence and to be inserted into multiple mold cavities respectively.

8. The injection mold for a circuit breaker handle of claim 7, wherein: The ejector plate is equipped with multiple ejector rods, which are driven by the ejector plate to pass through the moving template and the moving mold core in sequence and are respectively inserted into the main runner.

9. The injection mold for a circuit breaker handle of claim 7, wherein: The ejector plate is provided with multiple guide posts, the upper ends of which pass through the guide holes of the moving template. Multiple springs are respectively fitted on the multiple guide posts, and the two ends of the multiple springs abut against the ejector plate and the moving template.

10. The injection mold for a circuit breaker handle of claim 1, wherein: The moving mold core has multiple positioning grooves arranged in a rectangular array on the side facing the stationary mold core, and the stationary mold core has multiple positioning protrusions that engage with the multiple positioning grooves.

Images