Pressing die of plastic shell for circuit breaker
By designing the heating components and mold structures of dynamic and static molds, the problems of limited output of single molds and difficult to control temperature uniformity in the press molding of circuit breakers are solved, and the quality improvement of multiple molding and finished products are achieved.
Patent Information
- Application Number
- CN202421068127.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The press molding of plastic shells for circuit breakers in the prior art has problems such as limited single mold yield and difficult to control the uniformity of mold temperature, resulting in poor dimensional accuracy, surface quality and mechanical properties of the finished product.
A pressing mold including a dynamic mold and a static mold is designed. The static mold and the static mold are opened and closed by the movement of the hydraulic press. The static mold and the static mold are each equipped with heating components to achieve uniform heating, and pass through multiple mold core components and mold cavity. The components are pressed into multiple plastic shells at one time, and the mold design supports automatic mold release.
The plastic shell for a single press-forming multi-piece circuit breaker is realized, ensuring the uniformity of plastic molding and the quality of the finished product, and improving the production efficiency and consistency of the finished product.
Smart Images
Figure CN222309555U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plastic product processing, and in particular relates to a pressing die for a plastic shell for a circuit breaker. Background Art
[0002] Plastic housings for circuit breakers are generally produced by thermosetting plastic injection molding or thermosetting plastic compression molding. Thermosetting plastic injection molding is an efficient mass production method that melts thermosetting plastics and quickly injects them into a closed mold under high pressure, while completing plastic molding and chemical curing and cross-linking. Thermosetting plastic compression molding is a simple and efficient molding process that applies a certain pressure to the preheated thermosetting plastic to fill the mold and form it. Finally, the finished product can be obtained after cooling and demolding.
[0003] Compared with injection molding, compression molding has low equipment investment, high production efficiency, high material utilization and low production cost. Most production lines use thermosetting plastic compression molding. However, the following problems are found in actual production:
[0004] First, the existing technology generally adopts a "one-out-one" production mode for pressing, and only one plastic housing for a circuit breaker can be produced in one pressing, and the output of a single mold is limited;
[0005] Second, it is difficult to control the uniformity of mold temperature during pressing with the existing technology. Pressing molding requires high uniformity of mold temperature. Uneven temperature will lead to different degrees of curing and shrinkage in different parts of the plastic shell for circuit breaker, resulting in internal stress and deformation, affecting the dimensional accuracy, surface quality and mechanical properties of the finished plastic shell for circuit breaker, and reducing the consistency and qualified rate of the finished product.
[0006] In view of the above problems existing in the existing pressing dies, it is urgent to develop a pressing die for a plastic housing for a circuit breaker to improve the production efficiency and the quality of the finished plastic housing for the circuit breaker. Utility Model Content
[0007] The utility model aims to provide a pressing die for a plastic housing for a circuit breaker, so as to solve the technical problems in the prior art mentioned in the above background technology that only one plastic housing for a circuit breaker can be produced by one pressing and it is difficult to control the uniformity of the mold temperature during pressing.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A pressing die for a plastic housing for a circuit breaker, comprising:
[0010] A movable die mounted on the moving crossbeam of a hydraulic press;
[0011] The static mold is located below the movable mold and installed on the workbench of the hydraulic press; the movable mold and the static mold are opened and closed by the movement of the hydraulic press; wherein:
[0012] The movable mold comprises a movable mold frame and a movable mold heating assembly; the bottom of the movable mold frame is connected to a plurality of mold core assemblies having the same inner contour as the plastic shell; the movable mold heating assembly comprises a movable mold vertical heating rod located inside the mold core assembly and a movable mold horizontal heating rod located above the mold core assembly; a movable mold ejection assembly is arranged on the movable mold frame, and an ejection hole for the movable mold ejection assembly to pass through is arranged on the mold core assembly;
[0013] The static mold includes a static mold frame and a static mold heating assembly; a plurality of cavity assemblies matching the mold core assembly are embedded on the top of the static mold frame, the static mold heating assembly includes a plurality of static mold horizontal heating rods arranged on the side and bottom of the cavity assembly, a static mold ejection assembly is arranged on the static mold frame, and an ejection hole for the static mold ejection assembly to pass through is arranged on the cavity assembly.
[0014] Preferably, four of the mold core assemblies are connected to the bottom of the movable mold frame, and four of the mold cavity assemblies are embedded in the top of the static mold frame; four plastic housings for circuit breakers can be produced by one pressing and molding.
[0015] Preferably, the core mold assembly and the cavity mold assembly are respectively installed on the movable mold and the static mold by bolt connection and / or clamp fixing; the detachable installation method of the core mold assembly and the cavity mold assembly facilitates the maintenance or replacement of the core mold assembly and the cavity mold assembly.
[0016] Preferably, six movable mold vertical heating rods are arranged in each mold core assembly, and the movable mold vertical heating rods can penetrate deep into the mold core to heat the inside and outside of the mold core evenly, thereby ensuring that the plastic is completely melted and formed.
[0017] Preferably, the movable mold horizontal heating rods include twelve mutually parallel heating rods, and the twelve heating rods are divided into eight movable mold long heating rods and four movable mold short heating rods; the arrangement of the long and short rods can cover the contact surface between the movable mold and the static mold to achieve comprehensive and uniform heating.
[0018] Preferably, the movable mold ejection assembly comprises two movable mold ejection oil cylinders, a movable mold ejection plate, a movable mold ejector plate and a plurality of movable mold ejector inserts; the movable mold ejection oil cylinders are respectively arranged on both sides of the movable mold frame, the movable mold ejection oil cylinders are connected to the movable mold ejector plates, the movable mold ejector plates are connected to the movable mold ejector plates located in the movable mold frame, a plurality of movable mold ejector inserts are arranged on the movable mold ejector plate, and the movable mold ejector inserts pass through the ejection holes arranged on the mold core assembly; the movable mold ejection assembly can eject the molded circuit breaker plastic shell out of the mold core assembly to achieve automatic demolding.
[0019] Preferably, the static mold heating assembly includes a static mold long heating rod and a static mold short heating rod that are perpendicular to each other; the long and short heating rods are arranged vertically to cover the entire area of the side and bottom of the mold cavity assembly to achieve comprehensive and uniform heating.
[0020] Preferably, the static mold long heating rods include eleven long heating rods parallel to each other, and the eleven long heating rods are divided into three long heating rods located on the side of the mold cavity assembly and eight long heating rods located on the bottom of the mold cavity assembly.
[0021] Preferably, the static mold short heating rods are divided into two groups, each group includes two short heating rods parallel to each other; the two groups of short heating rods are respectively located between adjacent mold cavity components.
[0022] Preferably, the static mold ejection assembly comprises two static mold ejection oil cylinders, a static mold ejection plate, a static mold ejector plate and a plurality of static mold ejector inserts; the static mold ejection oil cylinders are respectively arranged on both sides of the static mold frame, the static mold ejection oil cylinders are connected to the static mold ejection plates, the static mold ejection plates are connected to the static mold ejector plates located in the static mold frame, a plurality of static mold ejector inserts are arranged on the static mold ejector plate, and the static mold ejector inserts pass through the ejection holes arranged on the mold cavity assembly; the molded circuit breaker is ejected out of the mold cavity assembly with a plastic shell to achieve automatic demolding.
[0023] Compared with the prior art, the beneficial effects of the utility model are:
[0024] 1. The utility model solves the problem that only one plastic shell for a circuit breaker can be produced by one pressing in the prior art, the output of a single mold is limited, and the production efficiency is low by setting a plurality of mold core assemblies with the same inner contour as the plastic shell and a plurality of mold cavity assemblies matching the mold core assemblies, and realizes that multiple plastic shells for circuit breakers can be produced by one pressing; four mold core assemblies are connected to the bottom of the movable mold frame, and four mold cavity assemblies are embedded in the top of the static mold frame; four plastic shells for circuit breakers can be produced by one pressing; the mold core assembly and the mold cavity assembly are respectively installed on the movable mold and the static mold by bolt connection and / or clamp fixing; the detachable installation method of the mold core assembly and the mold cavity assembly is convenient for repairing or replacing the mold core assembly and the mold cavity assembly.
[0025] 2. The utility model solves the problem that it is difficult to control the uniformity of mold temperature during pressing in the prior art by arranging a dynamic mold heating assembly and a static mold heating assembly; the dynamic mold heating assembly comprises a dynamic mold vertical heating rod located inside the mold core assembly and a dynamic mold horizontal heating rod located above the mold core assembly, and six dynamic mold vertical heating rods are arranged in each mold core assembly, and the dynamic mold vertical heating rods can penetrate into the mold core to heat the inside and outside of the mold core evenly, ensuring that the plastic is completely melted and formed; the dynamic mold horizontal heating rods comprise twelve mutually parallel heating rods, and the twelve heating rods are divided into eight dynamic mold long heating rods and four dynamic mold short heating rods; the arrangement of the long and short rods can cover the contact surface between the dynamic mold and the static mold, and the dynamic mold horizontal heating rods can be arranged to ... The static mold heating assembly comprises a plurality of static mold horizontal heating rods arranged on the side and bottom of the cavity assembly, and the static mold heating assembly comprises a static mold long heating rod and a static mold short heating rod perpendicular to each other; the long and short heating rods are arranged vertically to cover the entire area of the side and bottom of the cavity assembly to achieve comprehensive and uniform heating; the static mold long heating rod comprises eleven long heating rods parallel to each other, and the eleven long heating rods are divided into three long heating rods located on the side of the cavity assembly and eight long heating rods located on the bottom of the cavity assembly; the static mold short heating rods are divided into two groups, each group comprises two short heating rods parallel to each other; the two groups of short heating rods are respectively located between adjacent cavity assemblies. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of a preferred embodiment of the utility model;
[0027] Figure 2 It is a schematic diagram of the separation state of the movable mold and the static mold in the preferred embodiment of the utility model;
[0028] Figure 3 It is a schematic diagram of the dynamic mold and the static mold in the pressed state of the preferred embodiment of the utility model;
[0029] Figure 4 An exploded view of a movable mold of a preferred embodiment of the utility model;
[0030] Figure 5 It is an exploded view of the static mold of the preferred embodiment of the utility model.
[0031] In the figure: 100, movable mold; 110, mold core assembly; 120, movable mold ejector assembly; 121, movable mold ejector oil cylinder; 122, movable mold ejector plate; 123, movable mold ejector pin plate; 124, movable mold ejector pin insert; 130, movable mold heating assembly; 131, movable mold horizontal heating rod; 132, movable mold vertical heating rod; 140, movable mold frame; 200, static mold; 210, mold cavity assembly; 220, static mold ejector assembly; 221, static mold ejector oil cylinder; 222, static mold ejector plate; 223, static mold ejector pin plate; 224, static mold ejector pin insert; 230, static mold heating assembly; 231, static mold horizontal heating rod; 240, static mold frame. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.
[0033] like Figure 1-Figure 5 As shown:
[0034] A pressing die for a plastic housing for a circuit breaker, comprising:
[0035] A movable die 100 mounted on a moving crossbeam of a hydraulic press;
[0036] The static mold 200 is located below the dynamic mold 100 and is installed on the workbench of the hydraulic press; the dynamic mold 100 and the static mold 200 are opened and closed by the movement of the hydraulic press; wherein:
[0037] The movable mold 100 includes a movable mold frame 140 and a movable mold heating assembly 130;
[0038] The bottom of the movable mold frame 140 is connected to a plurality of mold core assemblies 110 having the same inner contour as the plastic shell, and in this embodiment, there are specifically four mold core assemblies 110;
[0039] The movable mold heating assembly 130 includes a movable mold vertical heating rod 132 located inside the mold core assembly 110 and a movable mold horizontal heating rod 131 located above the mold core assembly 110; specifically, six movable mold vertical heating rods 132 are arranged in each mold core assembly 110, and the movable mold vertical heating rods 132 can penetrate into the mold core to evenly heat the inside and outside of the mold core to ensure that the plastic is completely melted and formed; the movable mold horizontal heating rod 131 includes twelve heating rods parallel to each other, and the twelve heating rods are divided into eight movable mold long heating rods and four movable mold short heating rods; the arrangement of the long and short rods can cover the contact surface between the movable mold 100 and the static mold 200 to achieve comprehensive and uniform heating.
[0040] A movable mold ejector assembly 120 is arranged on the movable mold frame 140; an ejection hole for the movable mold ejector assembly 120 to pass through is arranged on the mold core assembly 110; specifically, the movable mold ejector assembly 120 includes two movable mold ejector oil cylinders 121, a movable mold ejector plate 122, a movable mold ejector pin plate 123 and a plurality of movable mold ejector pin inserts 124; the movable mold ejector oil cylinders 121 are respectively arranged on both sides of the movable mold frame 140, and the movable mold ejector The oil cylinder 121 is connected to the movable mold ejector plate 122, and the movable mold ejector plate 122 is connected to the movable mold ejector plate 123 located in the movable mold frame 140. A plurality of movable mold ejector inserts 124 are arranged on the movable mold ejector plate 123, and the movable mold ejector inserts 124 pass through the ejection holes arranged on the mold core assembly 110; the movable mold ejector assembly 120 can eject the molded circuit breaker plastic shell out of the mold core assembly 110 to achieve automatic demolding.
[0041] The static mold 200 includes a static mold frame 240 and a static mold heating assembly 230;
[0042] A plurality of cavity assemblies 210 matching the core assembly 110 are embedded on the top of the static mold frame 240 . Specifically, there are four cavity assemblies 210 in this embodiment.
[0043] The static mold heating component 230 includes a plurality of static mold horizontal heating rods 231 arranged on the side and bottom of the mold cavity component 210; specifically, the static mold heating component 230 includes a static mold long heating rod and a static mold short heating rod that are perpendicular to each other; the long and short heating rods are arranged vertically to cover the entire area of the side and bottom of the mold cavity component 210 to achieve comprehensive and uniform heating; the static mold long heating rod includes eleven long heating rods parallel to each other, and the eleven long heating rods are divided into three long heating rods located on the side of the mold cavity component 210 and eight long heating rods located on the bottom of the mold cavity component 210; the static mold short heating rods are divided into two groups, each group includes two short heating rods parallel to each other; the two groups of short heating rods are respectively located between adjacent mold cavity components 210.
[0044] A static mold ejection assembly 220 is arranged on the static mold frame 240, and an ejection hole for the static mold ejection assembly 220 to pass through is arranged on the mold cavity assembly 210; specifically, the static mold ejection assembly 220 includes two static mold ejection oil cylinders 221, a static mold ejection plate 222, a static mold ejector plate 223 and a plurality of static mold ejector inserts 224; the static mold ejection oil cylinders 221 are respectively arranged on both sides of the static mold frame 240, the static mold ejection oil cylinders 221 are connected to the static mold ejection plates 222, the static mold ejection plates 222 are connected to the static mold ejector plates 223 located in the static mold frame 240, and a plurality of static mold ejector inserts 224 are arranged on the static mold ejector plate 223, and the static mold ejector inserts 224 pass through the ejection holes arranged on the mold cavity assembly 210; the molded circuit breaker plastic shell is ejected out of the mold cavity assembly 210 to achieve automatic demolding.
[0045] The core assembly 110 and the cavity assembly 210 are respectively installed on the movable mold 100 and the static mold 200 by bolt connection and / or clamp fixing; the detachable installation method of the core assembly 110 and the cavity assembly 210 facilitates the maintenance or replacement of the core assembly 110 and the cavity assembly 210.
[0046] The utility model is provided with a movable die 100 which is installed on a movable crossbeam of a hydraulic press and a static die 200 which is located below the movable die 100 and is installed on a working table of the hydraulic press. The movable mold 100 includes a movable mold frame 140 and a movable mold heating assembly 130; the bottom of the movable mold frame 140 is connected to a plurality of mold core assemblies 110 with the same contour as the inner contour of the plastic shell, and the movable mold heating assembly 130 includes a movable mold vertical heating rod 132 located inside the mold core assembly 110 and a movable mold horizontal heating rod 131 located above the mold core assembly 110, and six movable mold vertical heating rods 132 are arranged in each mold core assembly 110, and the movable mold vertical heating rods 132 can penetrate into the mold core to evenly heat the mold core inside and outside to ensure that the plastic is completely melted and formed; the movable mold horizontal heating rod 131 includes twelve heating rods parallel to each other, and the twelve heating rods are divided into eight movable mold long heating rods and four movable mold short heating rods; the arrangement of the long and short rods can cover the contact surface between the movable mold 100 and the static mold 200 to achieve comprehensive and uniform heating; a movable mold frame 140 is provided with a movable mold frame 140, and a movable mold frame 131 is provided with a movable mold frame 140, and a movable mold frame 132 is provided with a movable mold frame 130, and a movable mold frame 132 is provided with a movable mold frame 130, and a movable mold frame 130 ... A movable mold ejection assembly 120 is arranged, and an ejection hole for the movable mold ejection assembly 120 to pass through is arranged on the mold core assembly 110; the movable mold ejection assembly 120 includes two movable mold ejection oil cylinders 121, a movable mold ejection plate 122, a movable mold ejector plate 123 and a plurality of movable mold ejector inserts 124; the movable mold ejection oil cylinders 121 are respectively arranged on both sides of the movable mold frame 140, the movable mold ejection oil cylinders 121 are connected to the movable mold ejection plate 122, the movable mold ejection plate 122 is connected to the movable mold ejector plate 123 located in the movable mold frame 140, and a plurality of movable mold ejector inserts 124 are arranged on the movable mold ejector plate 123, and the movable mold ejector inserts 124 pass through the ejection hole arranged on the mold core assembly 110; the movable mold ejection assembly 120 can eject the molded circuit breaker plastic shell out of the mold core assembly 110 to achieve automatic demoulding.The static mold 200 includes a static mold frame 240 and a static mold heating assembly 230; a plurality of cavity assemblies 210 matching the mold core assembly 110 are embedded on the top of the static mold frame 240; the static mold heating assembly 230 includes a plurality of static mold horizontal heating rods 231 arranged on the side and bottom of the cavity assembly 210; the static mold heating assembly 230 includes static mold long heating rods and static mold short heating rods perpendicular to each other; the long and short heating rods are arranged vertically to cover the entire area of the side and bottom of the cavity assembly 210 to achieve comprehensive and uniform heating; the static mold long heating rods include eleven long heating rods parallel to each other, the eleven long heating rods are divided into three long heating rods located on the side of the cavity assembly 210 and eight long heating rods located on the bottom of the cavity assembly 210; the static mold short heating rods are divided into two groups, each group includes two short heating rods parallel to each other; the two groups of short heating rods are located respectively at the opposite The static mold ejection assembly 220 is arranged on the static mold frame 240, and the mold cavity assembly 210 is provided with an ejection hole for the static mold ejection assembly 220 to pass through. The static mold ejection assembly 220 includes two static mold ejection oil cylinders 221, a static mold ejection plate 222, a static mold ejector plate 223 and a plurality of static mold ejector inserts 224; the static mold ejection oil cylinders 221 are respectively arranged on the static mold frame 240 On both sides, the static mold ejection cylinder 221 is connected to the static mold ejection plate 222, and the static mold ejection plate 222 is connected to the static mold ejector plate 223 located in the static mold frame 240. A plurality of static mold ejector inserts 224 are arranged on the static mold ejector plate 223, and the static mold ejector inserts 224 pass through the ejection holes arranged on the mold cavity assembly 210; the molded circuit breaker plastic shell is ejected from the mold cavity assembly 210 to realize automatic demolding.
[0047] Working principle:
[0048] Step 1: Add raw materials:
[0049] The operator puts the pre-weighed raw materials (bulk molding compound) for pressing the plastic housing for the circuit breaker into the four cavity assemblies 210 on the static mold 200 respectively.
[0050] Step 2: Mold heating:
[0051] The operator turns on the switches of the dynamic mold heating assembly 130 and the static mold heating assembly 230. After the temperature of the heating rod increases, the heat is transferred to the mold core assembly 110 and the mold cavity assembly 210 respectively in contact with it through heat conduction, and the heating rods arranged in multiple dimensions realize comprehensive and uniform heating of the mold core assembly 110 and the mold cavity assembly 210. The temperature of the mold core assembly 110 and the mold cavity assembly 210 gradually increases, and the heat is transferred to their inner surfaces. When the temperature of the inner surface of the mold cavity assembly 210 reaches a certain value, the raw material begins to melt and is in a molten state. By controlling the temperature and time of the heating assembly, the raw material in the mold cavity can be completely melted;
[0052] After the operator turns on the switches of the movable mold heating component 130 and the static mold heating component 230, while the heating components are heated up, the operator operates the oil hydraulic press to move the movable mold 100 vertically downward to close the mold with the static mold 200; the operator starts the hydraulic system of the oil hydraulic press through the control system of the oil hydraulic press, and the hydraulic pump in the hydraulic system starts to work, and the hydraulic oil is transported from the oil storage tank to the hydraulic cylinder, so that the piston in the hydraulic cylinder is stressed. The movable mold 100 is connected to the hydraulic cylinder piston of the oil hydraulic press through a connecting mechanism. When the hydraulic cylinder piston is forced to move downward, it drives the movable mold 100 to move downward in the vertical direction. During the downward movement of the movable mold 100, the mold core assembly 110 on the movable mold 100 also moves downward. At the same time, the static mold 200 remains stationary. When the movable mold 100 moves downward to a certain position, the mold core assembly 110 on the movable mold 100 is accurately inserted into the mold cavity assembly 210 on the static mold 200 until the movable mold 100 and the static mold 200 are completely closed to form a complete mold cavity space. After the mold is closed, proceed to the next step.
[0053] Step 3: Pressure-maintaining and shaping:
[0054] The purpose of pressure holding is to offset the internal stress caused by shrinkage of the molten raw materials during the cooling and solidification process, and to prevent defects such as shrinkage cavities and deformation. The operator controls the hydraulic press to keep a certain pressure between the movable mold 100 and the static mold 200. Under high pressure, the molten plastic has a certain fluidity, which helps the plastic to be evenly filled in various parts of the mold, thereby improving the dimensional accuracy and surface quality of the plastic shell for the circuit breaker. Under continuous high temperature and pressure, the resin molecules begin to undergo chemical cross-linking reactions, which connect the resin molecules into a macromolecular network structure through covalent bonds, so that the material changes from a molten state to a solid state. The plastic shell for the circuit breaker is solidified inside the mold until it is completely solidified and formed, and then proceeds to the next step.
[0055] Step 4: Mold opening and demoulding:
[0056] The operator controls the hydraulic press to make the movable mold 100 move vertically upward and return to the mold opening fixed position; at the same time, the movable mold ejector assembly 120 starts to work, and the piston rod of the movable mold ejector cylinder 121 moves downward, pushing the movable mold ejector plate 122 to move downward. When the movable mold ejector plate 122 moves downward, it will drive the movable mold ejector plate 123 connected to it to move downward together. A plurality of movable mold ejector inserts 124 are installed on the movable mold ejector plate 123. The position and number of the movable mold ejector inserts 124 correspond to the position and number of the mold core assembly 110. The movable mold ejector insert 124 extends downward from the mold core assembly 110 through the ejection hole opened at the top of the mold core assembly 110, ejects and detaches the plastic shell of the circuit breaker from the mold core assembly 110, and the plastic shell of the circuit breaker is demolded from the movable mold 100 side;
[0057] After the movable mold 100 returns to the mold opening fixed position, the static mold ejection assembly 220 starts to work, and similarly to the movable mold ejection assembly 120, the circuit breaker plastic housing is ejected from the mold cavity assembly 210 of the static mold 200, and demolding is completed. The operator takes out the four molded circuit breaker plastic housings from the mold cavity assembly 210. One-time pressing production is completed.
[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A pressing die for a plastic housing for a circuit breaker, characterized in that: include: A movable die (100) mounted on a movable crossbeam of a hydraulic press; A static mold (200) is located below the movable mold (100) and is installed on a workbench of a hydraulic press; wherein: The movable mold (100) comprises a movable mold frame (140) and a movable mold heating assembly (130); the bottom of the movable mold frame (140) is connected to a plurality of mold core assemblies (110) having the same inner contour as the plastic shell; the movable mold heating assembly (130) comprises a movable mold vertical heating rod (132) located inside the mold core assembly (110) and a movable mold horizontal heating rod (131) located above the mold core assembly (110); a movable mold ejection assembly (120) is arranged on the movable mold frame (140); and an ejection hole for the movable mold ejection assembly (120) to pass through is arranged on the mold core assembly (110); The static mold (200) comprises a static mold frame (240) and a static mold heating assembly (230); a plurality of mold cavity assemblies (210) matching the mold core assembly (110) are embedded on the top of the static mold frame (240); the static mold heating assembly (230) comprises a plurality of static mold horizontal heating rods (231) arranged on the side and bottom surfaces of the mold cavity assembly (210); a static mold ejection assembly (220) is arranged on the static mold frame (240); and an ejection hole for the static mold ejection assembly (220) to pass through is arranged on the mold cavity assembly (210).
2. The pressing die for the plastic housing for circuit breaker according to claim 1, characterized in that: The bottom of the movable mold frame (140) is connected to four mold core assemblies (110), and the top of the static mold frame (240) is embedded with four mold cavity assemblies (210).
3. The pressing die for the plastic housing for circuit breaker according to claim 2, characterized in that: The mold core assembly (110) and the mold cavity assembly (210) are respectively mounted on the movable mold (100) and the static mold (200) by means of bolt connection and / or clamp fixing.
4. The pressing die for the plastic housing for circuit breaker according to claim 1, characterized in that: Six movable mold vertical heating rods (132) are arranged in each mold core assembly (110).
5. The pressing die for the plastic housing for a circuit breaker according to claim 1, characterized in that: The movable mold horizontal heating rods (131) include twelve mutually parallel heating rods, and the twelve heating rods are divided into eight movable mold long heating rods and four movable mold short heating rods.
6. The pressing die for the plastic housing for a circuit breaker according to claim 1, characterized in that: The movable mold ejection assembly (120) comprises two movable mold ejection oil cylinders (121), a movable mold ejection plate (122), a movable mold ejector plate (123) and a plurality of movable mold ejector inserts (124); the movable mold ejection oil cylinders (121) are respectively arranged on both sides of a movable mold frame (140); the movable mold ejection oil cylinders (121) are connected to the movable mold ejection plates (122); the movable mold ejection plates (122) are connected to the movable mold ejector plates (123) located in the movable mold frame (140); a plurality of movable mold ejector inserts (124) are arranged on the movable mold ejector plate (123); and the movable mold ejector inserts (124) pass through ejection holes arranged on the mold core assembly (110).
7. The pressing die for the plastic housing for a circuit breaker according to claim 1, characterized in that: The static mold heating assembly (230) comprises a static mold long heating rod and a static mold short heating rod which are perpendicular to each other.
8. The pressing die for the plastic housing for a circuit breaker according to claim 7, characterized in that: The static mold long heating rods include eleven long heating rods parallel to each other, and the eleven long heating rods are divided into three long heating rods located on the side of the mold cavity component (210) and eight long heating rods located on the bottom of the mold cavity component (210).
9. The pressing die for the plastic housing for a circuit breaker according to claim 7, characterized in that: The static mold short heating rods are divided into two groups, each group of static mold short heating rods includes two short heating rods parallel to each other; the two groups of short heating rods are respectively located between adjacent mold cavity components (210).
10. The pressing die for the plastic housing for circuit breaker according to claim 1, characterized in that: The static mold ejection assembly (220) comprises two static mold ejection oil cylinders (221), a static mold ejection plate (222), a static mold ejector pin plate (223) and a plurality of static mold ejector pin inserts (224); the static mold ejection oil cylinders (221) are respectively arranged on both sides of a static mold frame (240); the static mold ejection oil cylinders (221) are connected to the static mold ejection plates (222); the static mold ejection plates (222) are connected to the static mold ejector pin plates (223) located in the static mold frame (240); a plurality of static mold ejector pin inserts (224) are arranged on the static mold ejector pin plates (223); and the static mold ejector pin inserts (224) pass through ejection holes arranged on the mold cavity assembly (210).