Forming die for static contact of circuit breaker

Abstract

The utility model discloses a forming die for a static contact of a circuit breaker, and relates to the technical field of contacts. A forming die for a static contact of a circuit breaker comprises a lower die body, a plurality of shaping cavities are formed in the top of the lower die body, an ejection assembly is located on the lower die body and comprises a driving motor, a bidirectional threaded rod, two limiting rods and two moving frames, and an ejection cavity is formed in the bottom of the lower die body; and the driving motor is fixedly installed in the ejection cavity, the output end of the driving motor is fixedly connected with the bidirectional threaded rod, the bidirectional threaded rod is rotationally connected in the ejection cavity, and through cooperation of the ejection rod, the sliding plate, the connecting plate, the moving frame, the bidirectional threaded rod and the limiting rod, the ejection rod can be driven to rotate. The four connecting plates can drive the sliding plate to move upwards under the rotation of the two-way threaded rod, so that the formed static contacts can be ejected out by the ejection rods conveniently, the static contacts can be discharged conveniently, and the convenience of taking out the static contacts is further improved.

Description

Technical Field

[0001] This utility model relates to the field of contact technology, and in particular to a molding die for stationary contacts of circuit breakers. Background Technology

[0002] In power equipment and distribution systems, circuit breakers are crucial safety devices used to interrupt current in the event of overload, short circuit, or other faults, thereby protecting the circuit and equipment. The stationary contact is one of the key components of a circuit breaker, and its quality and performance directly affect the overall performance and reliability of the circuit breaker.

[0003] In the existing manufacturing process of circuit breaker stationary contacts, molding dies are indispensable tools. Molten metal material is injected into the mold through injection molding, and after cooling, the shape of the stationary contact is formed. However, after injection molding, the stationary contact is often tightly wrapped by the mold, requiring additional steps or tools to remove it from the mold. If the operation is not done properly, the surface or shape of the stationary contact can easily be damaged, affecting its quality and performance. Therefore, we propose a molding die for circuit breaker stationary contacts. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a molding die for the stationary contact of a circuit breaker. In the existing process of manufacturing stationary contacts of circuit breakers, the molding die is an indispensable tool. Molten metal material is injected into the mold by injection molding, and after cooling, the shape of the stationary contact is formed. However, after injection molding, the stationary contact is often tightly wrapped by the mold, and additional steps or tools are required to remove it from the mold. If the operation is not done properly, the surface or shape of the stationary contact can easily be damaged, affecting its quality and performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding die for a circuit breaker stationary contact, comprising:

[0006] The lower mold has multiple shaping cavities at its top;

[0007] Ejector assembly, located on the lower mold;

[0008] The ejection assembly includes a drive motor, a bidirectional threaded rod, two limit rods, and two movable frames. An ejection cavity is provided at the bottom of the lower mold. The drive motor is fixedly installed inside the ejection cavity, and the output end of the drive motor is fixedly connected to the bidirectional threaded rod. The bidirectional threaded rod is rotatably connected inside the ejection cavity. Both limit rods are fixedly connected inside the ejection cavity. Both movable frames are threaded onto the outer surface of the bidirectional threaded rod, and both movable frames are slidably connected to the outer surface of the two limit rods.

[0009] Preferably, the ejection assembly further includes four connecting plates, a sliding plate, and multiple ejection rods. The sliding plate is slidably connected inside the ejection cavity. The four connecting plates are rotatably connected to their respective movable frames. The ends of the four connecting plates away from their respective movable frames are rotatably connected to the bottom of the sliding plate. The multiple ejection rods are fixedly connected to the top of the sliding plate. The inner bottom walls of the multiple shaping cavities are provided with through holes, and the multiple ejection rods are slidably connected to their respective through holes.

[0010] Preferably, the top of the lower mold is fixedly connected to two mounting brackets, each mounting bracket has a sliding block slidably connected inside, and the opposite surfaces of the two sliding blocks are fixedly connected to mounting plates.

[0011] Preferably, an electric push rod is fixedly installed on the top of each of the two mounting brackets, and the telescopic ends of the two electric push rods slide into the corresponding mounting brackets and are fixedly connected to the corresponding sliding blocks.

[0012] Preferably, the bottom of the mounting plate is fixedly connected to multiple upper molds, each of which is adapted to a corresponding shaping cavity, and the top of the mounting plate is fixedly connected to multiple injection tubes, the bottom ends of which all penetrate the mounting plate.

[0013] Preferably, the lower mold has a cooling cavity inside, and connecting pipes are fixedly connected to both sides of the lower mold, with both connecting pipes communicating with the interior of the cooling cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The forming mold for the stationary contact of a circuit breaker, through the cooperation of the ejector rod, sliding plate, connecting plate, moving frame, bidirectional threaded rod and limiting rod, enables the four connecting plates to drive the sliding plate to move upward under the rotation of the bidirectional threaded rod, thereby facilitating the ejector rod to eject the formed stationary contact, making it easier to discharge multiple stationary contacts and further improving the convenience of removing the stationary contact. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the bidirectional threaded rod structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower mold of this utility model;

[0020] Figure 4This is a cross-sectional structural diagram of the mounting bracket of this utility model.

[0021] Reference numerals: 1. Lower mold; 2. Mounting bracket; 3. Electric push rod; 4. Mounting plate; 5. Injection tube; 6. Shaping cavity; 7. Connecting pipe; 8. Drive motor; 9. Moving frame; 10. Limiting rod; 11. Bidirectional threaded rod; 12. Ejection cavity; 13. Upper mold; 14. Through hole; 15. Connecting plate; 16. Ejection rod; 17. Cooling cavity; 18. Sliding plate; 19. Sliding block. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a molding die for a circuit breaker stationary contact, comprising:

[0027] The lower mold 1 has multiple shaping cavities 6 on its top.

[0028] Ejector assembly, located on lower mold 1;

[0029] The ejection assembly includes a drive motor 8, a bidirectional threaded rod 11, two limit rods 10, and two movable frames 9. The bottom of the lower mold 1 has an ejection cavity 12. The drive motor 8 is fixedly installed inside the ejection cavity 12. The output end of the drive motor 8 is fixedly connected to the bidirectional threaded rod 11. The bidirectional threaded rod 11 is rotatably connected inside the ejection cavity 12. The two limit rods 10 are both fixedly connected inside the ejection cavity 12. The two movable frames 9 are threaded onto the outer surface of the bidirectional threaded rod 11. The two movable frames 9 are slidably connected to the outer surface of the two limit rods 10.

[0030] The ejection assembly also includes four connecting plates 15, a sliding plate 18, and multiple ejection rods 16. The sliding plate 18 is slidably connected inside the ejection cavity 12. The four connecting plates 15 are rotatably connected to the corresponding movable frame 9. The ends of the four connecting plates 15 away from the corresponding movable frame 9 are rotatably connected to the bottom of the sliding plate 18. The multiple ejection rods 16 are fixedly connected to the top of the sliding plate 18. The inner bottom wall of the multiple shaping cavities 6 is provided with through holes 14, and the multiple ejection rods 16 are slidably connected to the corresponding through holes 14.

[0031] The top of the lower mold 1 is fixedly connected to two mounting brackets 2. Sliding blocks 19 are slidably connected inside the two mounting brackets 2. Mounting plates 4 are fixedly connected to the opposite surfaces of the two sliding blocks 19. Electric push rods 3 are fixedly installed on the top of the two mounting brackets 2. The telescopic ends of the two electric push rods 3 are slidably extended into the corresponding mounting brackets 2 and fixedly connected to the corresponding sliding blocks 19.

[0032] The bottom of the mounting plate 4 is fixedly connected to multiple upper molds 13, each of which is adapted to a corresponding shaping cavity 6. The top of the mounting plate 4 is fixedly connected to multiple injection tubes 5, the bottom ends of which all penetrate the mounting plate 4. The interior of the lower mold 1 is provided with a cooling cavity 17. Both sides of the lower mold 1 are fixedly connected to connecting pipes 7, and both connecting pipes 7 communicate with the interior of the cooling cavity 17.

[0033] Furthermore, when using this device, the tops of the multiple ejector rods 16 are aligned with the inner bottom wall of the corresponding shaping cavity 6. By connecting to an external power source, two electric push rods 3 are activated. The two electric push rods 3 drive the corresponding sliding blocks 19 to slide within the corresponding mounting bracket 2, allowing the two sliding blocks 19 to move the mounting plate 4 downwards. This facilitates the insertion of multiple upper molds 13 into the corresponding shaping cavity 6 and maintains a sealed state. Subsequently, by connecting external raw material pipes to multiple injection pipes 5, the molten metal material is discharged into the corresponding shaping cavity 6. Under the limitation of the upper mold 13, the stationary contact is shaped. Then, by connecting external pipes to two connecting pipes 7, coolant can enter the interior of the cooling cavity 17, thereby facilitating the cooling of the stationary contact in the shaping cavity 6.

[0034] Furthermore, when using this device, after the stationary contact has cooled and formed, the mounting plate 4 rises and resets. Then, by connecting an external power source, the drive motor 8 is started. The drive motor 8 drives the bidirectional threaded rod 11 to rotate. The rotation of the bidirectional threaded rod 11 drives the two moving frames 9 to move in opposite directions under the limitation of the two limiting rods 10. The movement of the two moving frames 9 drives the four connecting plates 15 to move and rotate simultaneously. The movement of the four connecting plates 15 will squeeze the sliding plate 18, causing the sliding plate 18 to drive multiple ejector rods 16 to move upward. The multiple ejector rods 16 will slide inside the corresponding through holes 14, thereby facilitating the ejection of the stationary contact in the multiple shaping cavities 6.

[0035] With the cooperation of ejector rod 16, sliding plate 18, connecting plate 15, moving frame 9, bidirectional threaded rod 11 and limiting rod 10, the four connecting plates 15 can drive the sliding plate 18 to move upward under the rotation of bidirectional threaded rod 11, so that multiple ejector rods 16 can eject the formed stationary contact, making it easier to discharge multiple stationary contacts and further improving the convenience of removing stationary contacts.

[0036] Structural Description: Ejector rod 16: Used to eject the stationary contact from the molding cavity after it has cooled and formed;

[0037] Shaping cavity 6: Provides the space and shape required for shaping the stationary contact;

[0038] Electric push rod 3: Provides lifting power to drive the lifting of the mounting plate and the upper mold;

[0039] Sliding block 19: Serves as a connector between the electric push rod and the mounting plate, transmitting lifting power;

[0040] Mounting plate 4: Supports the upper mold and moves up and down with the lifting and lowering of the electric push rod;

[0041] Upper mold 13: It fits with the shaping cavity to form the forming space of the stationary contact;

[0042] Injection tube 5: Used to inject molten metal material into the shaped cavity;

[0043] Connecting pipe 7: Connects the coolant pipe and the cooling cavity, allowing the coolant to enter and circulate;

[0044] Cooling cavity 17: Cools the stationary contacts in the molding cavity to promote rapid molding;

[0045] Drive motor 8: Provides power to drive the bidirectional threaded rod to rotate, which is used to start the ejection mechanism.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A molding die for a stationary contact of a circuit breaker, characterized in that, include: The lower mold (1) has multiple shaping cavities (6) on its top. Ejector assembly, the ejector assembly is located on the lower mold (1); The ejection assembly includes a drive motor (8), a bidirectional threaded rod (11), two limit rods (10) and two moving frames (9). The bottom of the lower mold (1) is provided with an ejection cavity (12), and the drive motor (8) is fixedly installed inside the ejection cavity (12). Among them, the output end of the drive motor (8) is fixedly connected to the bidirectional threaded rod (11), the bidirectional threaded rod (11) is rotatably connected inside the ejection cavity (12), and the two limit rods (10) are fixedly connected inside the ejection cavity (12); Both movable frames (9) are threaded onto the outer surface of the bidirectional threaded rod (11), and both movable frames (9) are slidably connected to the outer surface of the two limiting rods (10).

2. The molding die for a circuit breaker stationary contact according to claim 1, characterized in that: The ejection assembly also includes four connecting plates (15), a sliding plate (18), and multiple ejection rods (16). The sliding plate (18) is slidably connected inside the ejection cavity (12), and the four connecting plates (15) are rotatably connected inside the corresponding movable frame (9). Among them, the ends of the four connecting plates (15) away from the corresponding moving frame (9) are rotatably connected to the bottom of the sliding plate (18), the multiple ejector rods (16) are fixedly connected to the top of the sliding plate (18), the inner bottom walls of the multiple shaping cavities (6) are provided with through holes (14), and the multiple ejector rods (16) are slidably connected in the corresponding through holes (14).

3. A molding die for a stationary contact of a circuit breaker according to claim 1, characterized in that: The top of the lower mold (1) is fixedly connected to two mounting brackets (2), and the interior of each mounting bracket (2) is slidably connected to a sliding block (19). The opposite surfaces of the two sliding blocks (19) are fixedly connected to a mounting plate (4).

4. A molding die for a circuit breaker stationary contact according to claim 3, characterized in that: Electric push rods (3) are fixedly installed on the top of both mounting brackets (2). The telescopic ends of the two electric push rods (3) slide into the corresponding mounting brackets (2) and are fixedly connected to the corresponding sliding blocks (19).

5. A molding die for a stationary contact of a circuit breaker according to claim 3, characterized in that: The bottom of the mounting plate (4) is fixedly connected to multiple upper molds (13), each of which is adapted to the corresponding shaping cavity (6). The top of the mounting plate (4) is fixedly connected to multiple injection tubes (5), the bottom ends of which all penetrate the mounting plate (4).

6. A molding die for a stationary contact of a circuit breaker according to claim 1, characterized in that: The lower mold (1) has a cooling cavity (17) inside. Both sides of the lower mold (1) are fixedly connected to connecting pipes (7), and both connecting pipes (7) are connected to the interior of the cooling cavity (17).

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