A compression molding die for a circuit breaker base and a compression molding process thereof

Abstract

The application discloses a compression injection mold for a circuit breaker base and a compression injection process thereof, relates to the compression injection technology field of the circuit breaker base, and aims to solve the technical problem of the lack of automatic material returning means of the compression injection mold for the circuit breaker base, and comprises a lower mold, the top of the lower mold is provided with an upper mold, and the bottom of the upper mold is fixedly provided with a compression injection mechanism; the compression injection mechanism comprises four limiting rods, a pouring unit and a material returning unit. Through the compression injection mechanism, when the upper mold and the lower mold are closed, a sealing space is formed through the template and the pouring hole, pouring can be carried out, when the upper mold moves upwards, the circuit breaker base can be moved out of the inside of the lower mold, meanwhile, through a pneumatic system, the effects of automatic material returning and the like are realized, the circuit breaker base can be cooled through water flow in the inside of the lower mold, the circuit breaker base forming time is shortened, and through the movement of the plate in the pouring hole, the inner wall of the pouring hole is scraped and cleaned through the scraping groove, so that the surface is kept smooth, and the circuit breaker base forming is facilitated.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker base injection technology, and more specifically, to an injection mold for circuit breaker bases and its injection process. Background Technology

[0002] The injection molding die for circuit breaker bases plays a crucial role in the production and manufacturing of circuit breakers. Its performance directly affects the quality of the base, and thus the overall performance and safety of the circuit breaker. The new type of circuit breaker base injection molding die, with its significant improvements in sealing, demolding, material removal, cooling, and cleaning, greatly enhances production efficiency and product quality while reducing production costs. It provides a more efficient and higher-quality solution for circuit breaker base production, powerfully promoting the development of the circuit breaker manufacturing industry.

[0003] Currently, the injection molding dies for circuit breaker bases lack automated unloading methods, often relying on manual separation of waste material and finished product from the flow channel. This is inefficient, labor-intensive, and prone to damaging the injection molded product during operation. In view of this, we propose an injection molding die for circuit breaker bases and its injection process. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for circuit breaker bases, so as to solve the technical problem of the lack of automated material unloading means for injection molds for circuit breaker bases.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an injection mold for a circuit breaker base, comprising a lower mold, an upper mold arranged on the top of the lower mold, and an injection mechanism fixedly provided at the bottom of the upper mold;

[0006] The injection mechanism includes four limiting rods, a casting unit, and a material ejection unit; the four limiting rods are symmetrically connected to the bottom of the upper mold and inserted into the upper hole of the lower mold; the casting unit is arranged at the top of the lower mold and the material ejection unit is arranged at the bottom of the upper mold.

[0007] The bottom of the four limiting rods is fixedly connected to a cross plate, and the top of the cross plate is fixedly connected to a template through a first insert rod. The top of the upper mold is fixedly connected to a connection port, and the bottom of the upper mold is fixedly connected to a sealing plate, which is in movable contact with the lower mold. The top of the lower mold is provided with a pouring hole, and the template is movably sleeved inside the pouring hole. By setting a pressure injection mechanism, when the upper mold and the lower mold are closed, a sealed space is formed by the template and the pouring hole, which can be used for pouring. When the upper mold moves upward, the circuit breaker base can be moved out from inside the lower mold. At the same time, the pneumatic system realizes the effect of automatic material ejection, and the water flow inside the lower mold can dissipate heat from the pressure-injected circuit breaker base, reducing the molding time of the circuit breaker base. Furthermore, by moving the plate inside the pouring hole, the inner wall of the pouring hole is scraped and cleaned by the scraper groove, keeping its surface smooth and facilitating the molding of the circuit breaker base.

[0008] Preferably, the side surface of the template has a plurality of scraping grooves arranged in a linear array, and the bottom of the template has a plurality of air vents arranged in a square array.

[0009] Preferably, the casting unit includes a casting pipe, which is inserted into the upper hole of the lower mold and communicates with the casting hole. A closed-loop groove is arranged on the top of the lower mold, and an oil delivery pipe is fixedly sleeved in another hole of the mold and communicates with the closed-loop groove.

[0010] Preferably, the inner wall of the casting hole is provided with a number of through holes in a square array, and the through holes are connected to the closed loop groove. Each through hole is movably fitted with a ball, and the ball is in contact with the template.

[0011] Preferably, the ejection unit includes an ejection rod, which is movably connected to the bottom of the upper mold. The bottom of the upper mold has two symmetrical grooves, and pneumatic sliders are slidably connected inside the two grooves. Two first telescopic rods are fixedly connected to the side of the two pneumatic sliders near the ejection rod.

[0012] Preferably, springs are movably sleeved on the side surfaces of the two first telescopic rods, and the opposite ends of the two first telescopic rods and the ejector rod are respectively movably connected by a hinge frame. Two limiting blocks are slidably connected inside the two slide grooves.

[0013] Preferably, two tension springs are fixedly connected to the bottom of the two limiting blocks, and the tension springs are fixedly connected to the hinge frame. The end surface of the ejector rod is fixedly connected with an ejector plate in a symmetrical structure. The sealing plate is arranged with two slots in a symmetrical structure, and the slots are adapted to the ejector plate.

[0014] An injection molding process for an injection mold used in a circuit breaker base includes the following steps:

[0015] S1. Mold preparation: Before use, check all parts of the injection mold to see if there is any wear, deformation and damage. Use a special cleaning agent to remove dust, oil and other impurities from the surface of the mold to ensure that the surface of the mold is clean. Then install the mold on the injection machine and connect it to the output end of the injection machine through the connection port.

[0016] S2, Circuit breaker base injection;

[0017] S2.1 Raw material preparation: Place the injection material to be used in the melting equipment to melt it, and inject clean water into the lower mold to cool the circuit breaker base. Then connect the oil supply pipe to the lubrication system containing lubricating oil on the injection machine for demolding the circuit breaker base.

[0018] S2.2 Injection Molding of Circuit Breaker Base: Through an external control system, the upper mold moves downward via a limiting rod. At this time, the sealing plate fits with the lower mold, and the template makes the pouring hole a sealed space. Then, through the external control system, the fluid material flows from the pouring pipe into the sealed space to form the circuit breaker base. The clean water in the lower mold flows into the template through the air vent to dissipate heat from the template and shorten the cooling time of the circuit breaker base. At the same time, when the circuit breaker base is continuously injected, the scraping groove on the template can scrape away impurities on the inner wall of the pouring hole, keeping it smooth and avoiding affecting the integrity of the injection molding of the circuit breaker base.

[0019] S2.3 Circuit Breaker Base Forming and Unloading: Through an external hydraulic system, the upper mold moves upward, and the template moves upward through the limit rod until it is flush with the top surface of the lower mold. The circuit breaker base moves out of the casting hole. At this time, through an external control system, the pneumatic slider moves in the groove. The movement of the pneumatic slider pushes the first telescopic rod, and through the traction of the tension spring, the unloading rod rotates at an angle. As the pneumatic slider continues to move and the spring applies force to the first telescopic rod, the unloading rod continues to tilt, and the unloading plate moves out of the groove, pushing out the circuit breaker base and achieving the automatic unloading effect.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention features an injection molding mechanism that creates a sealed space between the upper and lower molds and the casting hole, allowing for casting. As the upper mold moves upward, the circuit breaker base can be removed from the lower mold. Simultaneously, a pneumatic system enables automatic material removal. Water flow within the lower mold dissipates heat from the injection-molded circuit breaker base, reducing its molding time. Furthermore, a plate moves within the casting hole, and a scraper cleans the inner wall of the hole, ensuring a smooth surface and facilitating the molding of the circuit breaker base. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0024] Figure 3 This is a schematic diagram of a three-dimensional partial structure of the casting unit of the present invention;

[0025] Figure 4 This is a schematic diagram of a three-dimensional partial structure of the casting unit of the present invention, to show the three-dimensional structure of the closed-loop groove;

[0026] Figure 5 This is a three-dimensional structural diagram of the injection mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of a three-dimensional partial structure of the unloading unit of the present invention;

[0028] Figure 7 This is a three-dimensional enlarged structural diagram of the unloading unit of the present invention.

[0029] The following are the labeling instructions in the diagram: 1. Lower mold; 2. Upper mold; 3. Injection mechanism; 301. Limiting rod; 302. Cross plate; 303. Template; 303a. Groove; 303b. Air vent; 304. Connection port; 305. Sealing plate; 306. Pouring hole; 4. Pouring unit; 401. Pouring pipe; 402. Closed-loop groove; 403. Oil pipe; 404. Through hole; 405. Ball bearing; 5. Unloading unit; 501. Unloading rod; 502. Slide groove; 503. Pneumatic slider; 504. First telescopic rod; 505. Spring; 506. Hinge frame; 507. Limiting block; 508. Tension spring; 509. Unloading plate; 510. Groove. Detailed Implementation

[0030] like Figures 1 to 7 As shown, the present invention relates to an injection mold for a circuit breaker base, comprising a lower mold 1, an upper mold 2 arranged on the top of the lower mold 1, and an injection mechanism 3 fixedly provided at the bottom of the upper mold 2;

[0031] The injection mechanism 3 includes four limiting rods 301, a casting unit 4, and a material ejection unit 5; the four limiting rods 301 are symmetrically connected to the bottom of the upper mold 2, and the limiting rods 301 are inserted into the upper hole of the lower mold 1; the casting unit 4 is arranged at the top of the lower mold 1, and the material ejection unit 5 is arranged at the bottom of the upper mold 2.

[0032] Four limiting rods 301 are fixedly connected to cross plates 302 at their bottoms. A template 303 is fixedly connected to the top of the cross plates 302 via a first insert rod. A connection port 304 is fixedly connected to the top of the upper mold 2, and a sealing plate 305 is fixedly connected to the bottom of the upper mold 2, with the sealing plate 305 in movable contact with the lower mold 1. A pouring hole 306 is arranged at the top of the lower mold 1, and the template 303 is movably fitted inside the pouring hole 306. Several scraping grooves 303a are arranged in a linear array on the side surface of the template 303, and several air leakage ports 303b are arranged in a square array at the bottom of the template 303. This invention, through its design... The injection molding mechanism 3 is installed. When the upper mold 2 and the lower mold 1 are closed, a sealed space is formed between the template 303 and the pouring hole 306, which allows for pouring. When the upper mold 2 moves upward, the circuit breaker base can be moved out from inside the lower mold 1. At the same time, the pneumatic system achieves automatic material removal and other effects. The water flow inside the lower mold 1 can dissipate heat from the injection-molded circuit breaker base, reducing the molding time of the circuit breaker base. The plate 303 moves inside the pouring hole 306, and the scraper groove 303a scrapes and cleans the inner wall of the pouring hole 306, keeping its surface smooth and facilitating the molding of the circuit breaker base.

[0033] In an embodiment of the present invention, the casting unit 4 includes a casting pipe 401, which is inserted into the upper hole of the lower mold 1 and communicates with the casting hole 306. A closed-loop groove 402 is arranged on the top of the lower mold 1. An oil supply pipe 403 is fixedly sleeved in another hole of the mold 1 and communicates with the closed-loop groove 402. A plurality of through holes 404 are opened in a square array on the inner wall of the casting hole 306 and communicate with the closed-loop groove 402. A ball 405 is movably sleeved inside each through hole 404 and the ball 405 is in movable contact with the template 303.

[0034] In an embodiment of the present invention, the ejection unit 5 includes an ejection rod 501, which is movably connected to the bottom of the upper mold 2. The bottom of the upper mold 2 has two symmetrically arranged grooves 502. Pneumatic sliders 503 are slidably connected inside the two grooves 502. Two first telescopic rods 504 are fixedly connected to the side of the two pneumatic sliders 503 near the ejection rod 501. Springs 505 are movably sleeved on the side surfaces of the two first telescopic rods 504. The two first telescopic rods 504 and the ejection rod 501 are movably connected to each other through a hinge frame 506. Two limiting blocks 507 are slidably connected inside the two grooves 502. Two tension springs 508 are fixedly connected to the bottom of the two limiting blocks 507, and the tension springs 508 are fixedly connected to the hinge frame 506. An ejection plate 509 is fixedly connected to the end surface of the ejection rod 501 in a symmetrical structure. The sealing plate 305 has two slots 510 arranged in a symmetrical structure, and the slots 510 are adapted to the ejection plate 509.

[0035] Example 2: An injection molding process for an injection mold used for a circuit breaker base, comprising the following steps:

[0036] S1. Mold preparation: Before use, check all parts of the injection mold to see if there is any wear, deformation and damage. Use a special cleaning agent to remove dust, oil and other impurities from the surface of the mold to ensure that the surface of the mold is clean. Then install the mold on the injection machine and connect it to the output end of the injection machine through the connection port 304.

[0037] S2, Circuit breaker base injection;

[0038] S2.1 Raw material preparation: Place the injection material to be used in the melting equipment to melt it, and inject clean water into the lower mold 1 to cool the circuit breaker base. Then connect the oil pipe 403 to the lubrication system containing lubricating oil on the injection machine for demolding the circuit breaker base.

[0039] S2.2 Injection Molding of Circuit Breaker Base: Through an external control system, the upper mold 2 moves downward via the limiting rod 301. At this time, the sealing plate 305 fits with the lower mold 1, and the template 303 makes the casting hole 306 a sealed space. Then, through the external control system, the fluid material flows from the casting pipe 401 into the sealed space to form the circuit breaker base. The clean water in the lower mold 1 flows into the template 303 through the air vent 303b to dissipate heat from the template 303, shortening the cooling time of the circuit breaker base. At the same time, when the circuit breaker base is continuously injected, the scraping groove 303a on the template 303 can scrape away the impurities on the inner wall of the casting hole 306, keeping it smooth and avoiding affecting the integrity of the injection molding of the circuit breaker base.

[0040] S2.3 Circuit breaker base forming and unloading: Through an external hydraulic system, the upper mold 2 moves upward, and the template 303 moves upward through the limiting rod 301 to be flush with the top surface of the lower mold 1. The circuit breaker base moves out of the casting hole 306. At this time, through an external control system, the pneumatic slider 503 moves in the slide groove 502. The movement of the pneumatic slider 503 pushes the first telescopic rod 504, and through the traction of the tension spring 508, the unloading rod 501 rotates at an angle. As the pneumatic slider 503 moves continuously and the spring 505 applies force to the first telescopic rod 504, the unloading rod 501 tilts continuously, and the unloading plate 509 moves out of the slot 510, pushing out the circuit breaker base and achieving automatic unloading.

[0041] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A molding die for a circuit breaker base, characterized in that, It includes a lower mold (1), an upper mold (2) is arranged on the top of the lower mold (1), and an injection mechanism (3) is fixed at the bottom of the upper mold (2); The injection mechanism (3) includes four limiting rods (301), a casting unit (4), and a material ejection unit (5); the four limiting rods (301) are symmetrically connected to the bottom of the upper mold (2), and the limiting rods (301) are inserted into the upper hole of the lower mold (1); the casting unit (4) is arranged at the top of the lower mold (1), and the material ejection unit (5) is arranged at the bottom of the upper mold (2); The bottom of the four limiting rods (301) is fixedly connected to a cross plate (302), the top of the cross plate (302) is fixedly connected to a template (303) through a first insert rod, the top of the upper mold (2) is fixedly connected to a connection port (304), the bottom of the upper mold (2) is fixedly connected to a sealing plate (305), and the sealing plate (305) is in movable contact with the lower mold (1). The top of the lower mold (1) is provided with a pouring hole (306), and the template (303) is movably sleeved inside the pouring hole (306). The ejection unit (5) includes an ejection rod (501), which is movably connected to the bottom of the upper mold (2). The bottom of the upper mold (2) has two symmetrically arranged grooves (502). Pneumatic sliders (503) are slidably connected inside the two grooves (502). Two first telescopic rods (504) are fixedly connected to the side of the two pneumatic sliders (503) near the ejection rod (501). Springs (505) are movably sleeved on the side surfaces of the two first telescopic rods (504). The two first telescopic rods (504) are connected to the ejection rod (501). The material rod (501) is movably connected at one end by a hinge frame (506). Two limiting blocks (507) are slidably connected inside the two slide grooves (502). Two tension springs (508) are fixedly connected to the bottom of the two limiting blocks (507), and the tension springs (508) are fixedly connected to the hinge frame (506). The end surface of the ejector rod (501) is fixedly connected with an ejector plate (509) in a symmetrical structure. The sealing plate (305) has two slots (510) arranged in a symmetrical structure, and the slots (510) are adapted to the ejector plate (509).

2. The injection molding die for a circuit breaker base according to claim 1, characterized in that, The template (303) has a number of scraping grooves (303a) arranged in a linear array on its side surface, and a number of air leakage ports (303b) arranged in a square array on its bottom.

3. The injection molding die for a circuit breaker base according to claim 2, characterized in that, The casting unit (4) includes a casting pipe (401), which is inserted into the upper hole of the lower mold (1) and is connected to the casting hole (306). A closed-loop groove (402) is arranged on the top of the lower mold (1), and an oil delivery pipe (403) is fixedly sleeved in another hole of the lower mold (1) and is connected to the closed-loop groove (402).

4. The injection molding die for a circuit breaker base according to claim 3, characterized in that, The inner wall of the casting hole (306) is provided with a number of through holes (404) in a square array, and the through holes (404) are connected to the closed loop groove (402). Each through hole (404) is movably fitted with a ball (405), and the ball (405) is in contact with the template (303).

5. A casting process for a casting mold for a circuit breaker base, applicable to the casting mold for a circuit breaker base as described in claim 4, characterized in that, Includes the following steps: S1. Mold preparation: Before use, check all parts of the injection mold to see if there is any wear, deformation and damage. Use a special cleaning agent to remove dust, oil and other impurities from the surface of the mold to ensure that the surface of the mold is clean. Then install the mold on the injection machine and connect it to the output end of the injection machine through the connection port (304). S2, Circuit breaker base injection; S2.1, Raw material preparation: Place the injection material to be used in the melting equipment for melting, and inject clean water into the lower mold (1) to cool the circuit breaker base, and then connect the oil pipe (403) to the lubrication system containing lubricating oil on the injection machine for demolding the circuit breaker base; S2.2, Injection molding of circuit breaker base: Through the external control system, the upper mold (2) moves downward through the limiting rod (301). At this time, the sealing plate (305) is in contact with the lower mold (1), and the template (303) makes the casting hole (306) a sealed space. Then, through the external control system, the fluid material flows from the casting pipe (401) into the sealed space to form the circuit breaker base. The clean water in the lower mold (1) flows into the template (303) through the air vent (303b) to dissipate heat from the template (303) and shorten the cooling time of the circuit breaker base. At the same time, when the circuit breaker base is continuously injected, the impurities on the inner wall of the casting hole (306) can be scraped off through the scraping groove (303a) on the template (303) to keep it smooth and avoid affecting the integrity of the injection molding of the circuit breaker base. S2.3, Circuit Breaker Base Forming and Unloading: Through the external hydraulic system, the upper mold (2) moves upward, and the template (303) moves upward through the limiting rod (301) to be flush with the top surface of the lower mold (1). The circuit breaker base moves out of the casting hole (306). At this time, through the external control system, the pneumatic slider (503) moves in the slide groove (502). The movement of the pneumatic slider (503) pushes the first telescopic rod (504), and through the traction of the tension spring (508), the unloading rod (501) rotates at an angle. As the pneumatic slider (503) moves continuously and the spring (505) applies force to the first telescopic rod (504), the unloading rod (501) tilts continuously, and the unloading plate (509) moves out of the slot (510), pushing out the circuit breaker base and achieving automatic unloading effect.

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