Pin assembling mechanism of moving contact assembly

Abstract

The utility model belongs to the technical field of circuit breaker assembling equipment, and particularly relates to a pin assembling mechanism of a moving contact assembly, which comprises a workbench, an index plate, a pin assembling mechanism and an assembling jig, the pin assembling mechanism comprises a correcting mechanism, an assembling mechanism and a feeding mechanism, a vibration plate in the feeding mechanism is used for feeding pins, and the assembling jig is used for assembling the pins. The intermittent feeding mechanism achieves intermittent accurate feeding of the pins through parts such as a concentric-square-shaped block, a movable rod and a first air cylinder, the problems of pin stacking, abnormal supply and the like are avoided, the assembling precision and quality are improved, the defective rate is reduced, the correcting mechanism conducts fine adjustment on the positions and angles of the assembling holes through correcting rods which are matched with the pin assembling holes and have the guiding function, and the assembling efficiency is improved. According to the utility model, the defects of the existing moving contact assembly assembling equipment in feeding and assembling links are effectively overcome, the production efficiency and the product quality are improved, and the moving contact assembly pin inserting device has important practical value.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit breaker assembly equipment, specifically a pin assembly mechanism for a moving contact assembly. Background Technology

[0002] Circuit breakers are key control devices in power systems, used to close, carry, and interrupt current. They can automatically cut off abnormal currents, prevent circuit faults from escalating, and protect the power grid and equipment safety. They are widely used in power, communication, transportation, construction and other fields to protect electrical equipment and power grid safety. With the development of technology, circuit breakers will become more intelligent and automated, improving their protection performance. Among them, the moving contact assembly is an important component of the circuit breaker.

[0003] A circuit breaker includes components such as a housing and a moving contact assembly. The moving contact assembly includes copper parts, copper wires, iron parts, torsion springs, plastic parts, and pins. The various parts are assembled using moving contact assembly equipment.

[0004] Current technologies for assembling moving contact components have the following drawbacks: In the feeding stage, the common feeding method often adopts a continuous feeding mechanism. This method has revealed serious defects in practical applications. Because it is impossible to accurately control the number of pins delivered to the assembly position each time, it is easy for pins to accumulate in the assembly area, resulting in a high defect rate, increased production costs, and reduced market competitiveness of enterprises. Furthermore, during the pin assembly process, since the moving contact component is composed of multiple small components, the pin assembly holes on each component often have positional and angular deviations. Directly aligning the pins with the assembly holes for installation makes it difficult for the pins to be inserted into the assembly holes uniformly and accurately. Forced assembly will cause problems such as pin installation failure or instability. Therefore, a pin assembly mechanism for moving contact components is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing moving contact assembly equipment, a pin assembly mechanism for moving contact assemblies is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pin assembly mechanism of the moving contact assembly of this utility model includes a worktable, an indexing plate is rotatably mounted on the worktable, a pin assembly mechanism is arranged on the periphery of the indexing plate, an assembly fixture corresponding to the pin assembly mechanism is arranged on the periphery of the indexing plate, the pin assembly mechanism includes a correction mechanism for correcting the pin assembly hole on the moving contact assembly in the assembly fixture, an assembly mechanism for assembling the pin, and a feeding mechanism for feeding materials to the assembly mechanism.

[0007] The feeding mechanism includes a vibratory feeder for feeding pins and an intermittent feeding mechanism located at the discharge position of the vibratory feeder. The intermittent feeding mechanism includes a U-shaped block assembled on one side of the vibratory feeder. The top and bottom ends of the U-shaped block are respectively provided with a feed inlet and a discharge outlet, and their positions are staggered. A movable rod is slidably arranged inside the U-shaped block. The movable rod has a through hole for the pins to pass through, and a groove is provided on one side of the through hole. The feed inlet is connected to the discharge position of the vibratory feeder through a first conveying pipe. A first cylinder is provided at one end of the movable rod to drive its reciprocating motion.

[0008] Preferably, both the through hole and the inlet of the discharge port are provided with flared openings.

[0009] Preferably, the assembly mechanism includes a first slide cylinder mounted on a worktable, an assembly block mounted on the working end of the first slide cylinder, a receiving cavity for accommodating the pin in the assembly block, an inlet and an outlet on the assembly block, the inlet being connected to the discharge port through a second conveying pipe, a second cylinder mounted on one side of the assembly block, and a push rod mounted on the working end of the second cylinder for pushing the pin out of the receiving cavity for assembly.

[0010] Preferably, the inlet is inclined.

[0011] Preferably, the correction mechanism includes a second slide cylinder mounted on the worktable, the working end of the second slide cylinder is equipped with a mounting plate, and the mounting plate is equipped with a correction rod for correcting the pin mounting hole on the moving contact assembly.

[0012] Preferably, a limiting block is fixedly provided inside the U-shaped block, and a limiting groove that cooperates with the limiting block is provided on the movable rod.

[0013] The beneficial effects of this utility model are:

[0014] 1. The intermittent feeding mechanism of this utility model realizes the intermittent and precise feeding of pins. During the pin assembly process of the moving contact assembly, only one pin is needed for each assembly position. This precise feeding avoids the problems of pin accumulation, excessive or insufficient supply that may occur during continuous feeding. It ensures that the number and timing of the pins supplied each time are accurate, which greatly improves the precision and quality of pin assembly and effectively reduces the defect rate caused by feeding problems.

[0015] 2. The size and shape of the straightening rod in the straightening mechanism match the pin assembly hole and have a guiding function. When the pin is inserted into the assembly hole, its position and angle can be finely adjusted to correct any possible deviations. By straightening the pin assembly hole through the straightening mechanism, it is ensured that the pin can be accurately inserted into the assembly hole, which improves the accuracy and stability of the pin assembly, thereby improving the overall quality and reliability of the moving contact assembly. This makes the product more stable in actual use and reduces the probability of failure caused by assembly problems. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a cross-sectional view of the intermittent feeding mechanism of this utility model;

[0019] Figure 3 This is a sectional view of the assembly mechanism of this utility model;

[0020] Figure 4 yes Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 5 This is a three-dimensional structural view of the moving contact assembly of this utility model;

[0022] Legend:

[0023] 1. Workbench; 01. Pin assembly hole; 02. Pin; 2. Indexing plate; 3. Pin assembly mechanism; 4. Assembly fixture; 5. Correction mechanism; 501. Second slide cylinder; 502. Mounting plate; 503. Correction rod; 6. Assembly mechanism; 601. First slide cylinder; 602. Assembly block; 603. Receiving cavity; 604. Inlet; 605. Outlet; 606. Second cylinder; 607. Push rod; 608. Second conveying pipe; 7. Feeding mechanism; 701. Vibratory feeder; 702. Intermittent feeding mechanism; 7021. Recessed block; 7022. Feed inlet; 7023. Discharge outlet; 7024. Movable rod; 7025. Through hole; 7026. First conveying pipe; 7027. First cylinder; 7028. Limiting block; 7029. Limiting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1-5 The present invention discloses a pin assembly mechanism for a moving contact assembly, comprising a worktable 1, an indexing plate 2 rotatably mounted on the worktable 1, a pin assembly mechanism 3 located on the periphery of the indexing plate 2, an assembly fixture 4 corresponding to the pin assembly mechanism 3 located on the periphery of the indexing plate 2, the pin assembly mechanism 3 comprising a correction mechanism 5 for correcting the pin assembly hole 01 on the moving contact assembly within the assembly fixture 4, an assembly mechanism 6 for assembling the pin 02, and a feeding mechanism 7 for feeding the assembly mechanism 6.

[0027] The feeding mechanism 7 includes a vibratory feeder 701 for feeding the pins 02, and an intermittent feeding mechanism 702 located at the discharge position of the vibratory feeder 701. The intermittent feeding mechanism 702 includes a U-shaped block 7021 mounted on one side of the vibratory feeder 701. The top and bottom ends of the U-shaped block 7021 are respectively provided with a feed inlet 7022 and a discharge outlet 7023, and their positions are staggered. A movable rod 7024 is slidably arranged inside the U-shaped block 7021. The movable rod 7024 has a through hole 7 for the pins 02 to pass through. 025, a sliding groove 70251 is provided on one side of the through hole 7025, the feed port 7022 is connected to the discharge position of the vibratory plate 701 through the first conveying pipe 7026, a first cylinder 7027 for driving the reciprocating motion is provided at one end of the movable rod 7024, a flared mouth is provided at the inlet of both the through hole 7025 and the discharge port 7023, a limit block 7028 is fixedly provided in the return block 7021, and a limit groove 7029 that cooperates with the limit block 7028 is provided on the movable rod 7024;During operation, before the pin assembly begins, the assembly fixtures 4 on the indexing plate 2 have already had their moving contact components pre-assembled by other assembly mechanisms. At this time, the vibratory feeder 701 contains a large number of pins 02 to be assembled, waiting to enter the feeding process. The vibratory feeder 701 uses the force generated by vibration to move the pins 02 in an orderly manner. The pins 02 exiting from the discharge position of the vibratory feeder 701 are conveyed through the first conveying pipe 7026 to the feed inlet 7022 on the return block 7021. The inner diameter of the first conveying pipe 7026 is matched with the outer diameter of the pins 02 to ensure that the pins 02 can pass through smoothly. When the pins 02 enter the feed inlet 7021... After 22, it will fall into the through hole 7025 on the movable rod 7024. Since the positions of the feed port 7022 and the discharge port 7023 are staggered, the pin 02 cannot be directly discharged from the discharge port 7023. The first cylinder 7027 starts to work. Its piston rod is connected to the movable rod 7024. Through the extension and retraction of the piston rod, the movable rod 7024 is driven to make linear reciprocating motion in the return block 7021. When the pin 02 located in the through hole 7025 is moved, there are still other pins 02 in the feed port 7022 above it. After the movable rod 7024 moves, the pins 02 above will fall into the slide groove 70251. During the movement of the moving rod 7024, the limiting block 7028 and the limiting groove 7029 play a positioning role. When the moving rod 7024 moves to a specific position, the limiting block 7028 will be locked in the limiting groove 7029, thereby precisely limiting the moving distance and position of the moving rod 7024, ensuring that the through hole 7025 can accurately move to a position on the same central axis as the discharge port 7023. Then, the pin 02 in the through hole 7025 falls into the discharge port 7023 under the action of gravity, completing one intermittent feeding action. Subsequently, the first cylinder 7027 drives the moving rod 7024 back to the initial position. At this time, the pin 02 located in the slide groove 70251 The pin 02 will fall into the through hole 7025. A photoelectric sensor is installed at this initial position to detect whether the pin 02 has entered the through hole 7025. Only after the pin 02 is detected entering the through hole 7025 will the equipment proceed with subsequent feeding actions. This avoids feeding errors caused by the pin 02 not entering correctly, further improving the accuracy and efficiency of feeding, ensuring the continuous and stable operation of the production line, and waiting for the next pin 02 to fall from the feed inlet 7022 into the through hole 7025 to begin a new feeding cycle. The flared openings at the inlets of the through hole 7025 and the discharge outlet 7023 ensure that the pin 02 enters accurately.

[0028] Furthermore, the assembly mechanism 6 includes a first slide cylinder 601 mounted on the worktable 1. An assembly block 602 is mounted on the actuating end of the first slide cylinder 601. The assembly block 602 has a receiving cavity 603 for accommodating the pin 02. The assembly block 602 has an inlet 604 and an outlet 605. The inlet 604 is connected to the discharge port 7023 via a second conveying pipe 608. A second cylinder 606 is mounted on one side of the assembly block 602. The working end of the second cylinder 606 is equipped with a push rod 607 for pushing the pin 02 out of the receiving cavity 603. The push rod 607 slides into the receiving cavity 603. The inlet 604 is inclined. The correction mechanism 5 includes a second slide cylinder 501 mounted on the worktable 1. The working end of the second slide cylinder 501 is equipped with a mounting plate 502. The mounting plate 502 is equipped with a correction rod 503 for correcting the pin mounting hole 01 on the moving contact assembly.During operation, the pin 02 falling from the discharge port 7023 is conveyed through the second conveying pipe 608 to the inlet 604 of the assembly block 602. The inlet 604 is inclined, which utilizes gravity to allow the pin 02 to slide more smoothly into the receiving cavity 603 after entering the inlet 604. Before the pin 02 is ready for assembly, the pin assembly hole 01 on the moving contact assembly needs to be aligned to ensure that the pin 02 can be inserted accurately. The second slide cylinder 501 starts to work. Its piston rod is connected to the mounting plate 502. The extension and retraction of the piston rod drives the mounting plate 502 and the components mounted on it. The straightening rod 503 moves linearly. When the indexing plate 2 rotates the assembly fixture 4 to the straightening position, the second slide cylinder 501 pushes the straightening rod 503 towards the moving contact assembly inside the assembly fixture 4, causing the straightening rod 503 to insert into the pin assembly hole 01. The size and shape of the straightening rod 503 match the pin assembly hole 01 and have a certain guiding function. During the insertion process, the straightening rod 503 will finely adjust the position and angle of the pin assembly hole 01 to correct any possible deviations. If the pin assembly hole 01 has a slight offset or tilt, the straightening rod 503 will apply a certain force during the insertion process to make the assembly hole... After returning to the correct position and angle, and after correction, the second slide cylinder 501 drives the correction rod 503 out of the pin assembly hole 01, preparing for subsequent pin assembly. Once the assembly hole correction is complete, pin assembly begins. The second cylinder 606 activates, its piston rod connected to the push rod 607, pushing the push rod 607 towards the pin 02 in the receiving cavity 603. Simultaneously, the first slide cylinder 601 also begins operation; its working end is connected to the assembly block 602, driving the entire assembly block 602 closer to the assembly fixture 4. Under the push of the push rod 607, the pin 02 is ejected from the outlet 605 of the assembly block 602. Since the mounting hole has been calibrated previously, pin 02 can be accurately inserted into the pin mounting hole 01, completing the assembly of pin 02. During this process, the movement speed and stroke of the first slide cylinder 601 and the second cylinder 606 can be precisely controlled to ensure that pin 02 is inserted into the mounting hole with appropriate force and position, avoiding problems of excessive or shallow insertion. The calibration mechanism 5 calibrates the pin mounting hole 01 through the calibration rod 503, ensuring that pin 02 can be accurately inserted into the mounting hole, improving the accuracy and stability of pin assembly, and thus enhancing the overall quality and reliability of the moving contact assembly.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pin assembly mechanism for a moving contact assembly, characterized in that: The system includes a workbench (1), on which an indexing plate (2) is rotatably mounted. A pin assembly mechanism (3) is provided on the periphery of the indexing plate (2). An assembly fixture (4) corresponding to the pin assembly mechanism (3) is provided on the periphery of the indexing plate (2). The pin assembly mechanism (3) includes a correction mechanism (5) for correcting the pin assembly hole (01) on the moving contact assembly in the assembly fixture (4), an assembly mechanism (6) for assembling pins (02), and a feeding mechanism (7) for feeding materials to the assembly mechanism (6). The feeding mechanism (7) includes a vibratory feeder (701) for feeding pins (02) and an intermittent feeding mechanism (702) located at the discharge position of the vibratory feeder (701). The intermittent feeding mechanism (702) includes a spiral block (7021) mounted on one side of the vibratory feeder (701). The top and bottom ends of the spiral block (7021) are respectively provided with a feed inlet (7022) and a discharge outlet (7023), and the positions of the two are staggered. 21) has an internal sliding movable rod (7024), the movable rod (7024) has a through hole (7025) for the pin (02) to pass through, the through hole (7025) has a sliding groove (70251) on one side, the feed port (7022) is connected to the discharge position of the vibratory plate (701) through the first conveying pipe (7026), and one end of the movable rod (7024) is provided with a first cylinder (7027) for driving its reciprocating motion.

2. The pin assembly mechanism for a moving contact assembly according to claim 1, characterized in that: Both the through hole (7025) and the inlet of the discharge port (7023) are provided with flared openings.

3. The pin assembly mechanism for a moving contact assembly according to claim 1, characterized in that: The assembly mechanism (6) includes a first slide cylinder (601) mounted on a workbench (1). An assembly block (602) is mounted on the working end of the first slide cylinder (601). The assembly block (602) has a receiving cavity (603) for accommodating the pin (02). The assembly block (602) has an inlet (604) and an outlet (605). The inlet (604) is connected to the discharge port (7023) through a second conveying pipe (608). A second cylinder (606) is mounted on one side of the assembly block (602). The working end of the second cylinder (606) is equipped with a push rod (607) for pushing the pin (02) out of the receiving cavity (603) for assembly.

4. The pin assembly mechanism for a moving contact assembly according to claim 3, characterized in that: The entrance (604) is set at an angle.

5. The pin assembly mechanism for a moving contact assembly according to claim 1, characterized in that: The correction mechanism (5) includes a second slide cylinder (501) mounted on the worktable (1), the working end of the second slide cylinder (501) is equipped with a mounting plate (502), and the mounting plate (502) is equipped with a correction rod (503) for correcting the pin mounting hole (01) on the moving contact assembly.

6. The pin assembly mechanism for a moving contact assembly according to claim 1, characterized in that: A limiting block (7028) is fixedly installed inside the loop block (7021), and a limiting groove (7029) that cooperates with the limiting block (7028) is opened on the movable rod (7024).

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