Semi-automatic lock washer machine

Abstract

This utility model relates to the field of mechanical manufacturing and automation technology, specifically disclosing a semi-automatic gasket locking machine, including a horizontal worktable and a vertical support. The horizontal worktable is equipped with a circular vibratory feeder, a vertical vibratory table, and a positioning plate. The vertical vibratory table has a guide rail fixed by bolts, and its track groove is covered with grounding pads. The positioning plate is equipped with a photoelectric sensor to snap onto a top cover product. The top cover product has a column, a three-pronged positioning column, and an L-shaped screw hole plate. The positioning plate has corresponding positioning holes, and the L-shaped screw hole plate rests on the top of the positioning plate. A slide rail bracket is mounted on the vertical support, on which a cylinder is mounted. An L-shaped mounting seat is slidably mounted on the slide rail. An electric screwdriver is mounted on the horizontal end of the L-shaped mounting seat, and the cylinder push rod is connected to the top of the electric screwdriver. A screw suction device is located on the back of the vertical support, with the output end located directly above the screw hole. A PLC controller is located on one side of the positioning plate. The cylinder is connected to a four-way solenoid regulating valve via a pipe. All components are electrically connected to the PLC controller, realizing the semi-automatic gasket locking function of the top cover product.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and automation technology, specifically to a semi-automatic gasket locking machine. Background Technology

[0002] Currently, in the manufacturing fields of electronics, electrical, and automotive parts, top cover products often require the installation of grounding washers to ensure electrical safety and performance stability. Traditional assembly methods largely rely on manual operation. During manual assembly, the grounding washer must first be manually placed in the designated position on the top cover product, and then screws are picked up one by one and screwdrivers or other tools are used to screw the screws into the washer and the screw hole on the top cover product to achieve a lock. This work mode has many drawbacks: on the one hand, it is difficult to ensure accurate alignment every time the washers and screws are placed manually, easily leading to washer misalignment, screw misalignment, etc., resulting in unstable assembly quality and a high product defect rate; on the other hand, manual operation speed is limited, making it difficult to meet the high-efficiency production rhythm in large-scale production scenarios, resulting in low production efficiency. Furthermore, repetitive fine assembly actions over a long period of time can easily cause worker fatigue, further affecting assembly accuracy and efficiency, and may also lead to occupational health problems. With the development of industrial automation technology, although some automated assembly equipment has appeared on the market, some equipment has limited functionality and cannot complete the entire set of actions such as washer alignment, screw placement, and tightening in one go; others have complex structures, high costs, and high requirements for the operating environment and technical personnel. Therefore, developing a device with a reasonable structure, moderate cost, and the ability to achieve semi-automatic locking of gaskets in top cover products is of great practical significance. Utility Model Content

[0003] In view of the above-mentioned technical problems in related technologies, this utility model provides a semi-automatic gasket locking machine, which can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: This semi-automatic gasket locking machine includes a horizontal worktable and a vertical support. A circular vibrating plate, a vertical vibrating table, and a positioning plate are fixedly mounted on the surface of the horizontal worktable. A guide rail is bolted to the vibrating end face of the top of the vertical vibrating table. Grounding pads are laid on the surface of the guide rail's groove. A photoelectric sensor is installed through the positioning plate, which holds a top cover product. A column, a three-pronged positioning post, and an L-shaped screw hole plate are fixedly mounted on the surface of the top cover product. The positioning plate has positioning holes that fit into the column and the three-pronged positioning post. The L-shaped screw hole plate overlaps the top surface of the positioning plate. A slide rail bracket is fixedly mounted on the vertical support, and a cylinder is fixedly mounted on the surface of the slide rail bracket. The slide rail bracket has an L-shaped mounting base that is slidably mounted on its slide rail. An electric screwdriver is fixedly mounted on the horizontal end of the L-shaped mounting base. The electric screwdriver includes a motor and a cross-head screw rod directly connected to the motor shaft. The cylinder push rod is connected to the top of the electric screwdriver. A screw suction device is installed on the back of the vertical bracket. The screw suction device includes a screw feeder, a screw suction pipe, and an air compressor. The output end of the screw suction pipe is located directly above the screw hole of the L-shaped screw hole plate. A PLC controller is fixedly mounted on one side of the positioning plate. The cylinder is connected to a four-way solenoid regulating valve through a pipe. The four-way solenoid regulating valve, the electric screwdriver, the vertical vibration table, and the photoelectric sensor are all electrically connected to the PLC controller.

[0005] Furthermore, the discharge port of the circular vibratory feeder is located directly above the track groove of the guide rail. The top of the positioning plate has a groove for the L-shaped screw hole plate to overlap. The horizontal plate of the L-shaped screw hole plate has a screw hole that mates with the grounding pad. When the horizontal plate of the L-shaped screw hole plate overlaps the groove at the top of the positioning plate, the horizontal plate of the L-shaped screw hole plate is aligned with the end of the track groove of the guide rail.

[0006] Furthermore, the slide rail of the slide rail bracket has a T-shaped cross-section, and the back of the L-shaped mounting base is provided with a T-shaped groove that slides and engages with the slide rail.

[0007] The beneficial effects of this utility model are as follows: The device of this application detects the product placed in the top cover by a sensor, and automatically starts the vertical vibration table, screw suction device, cylinder and electric screwdriver by a PLC controller. This realizes the alignment of the grounding pad with the L-shaped screw hole of the top cover, the placement of the screw, and the screw being screwed into the screw hole of the grounding pad and the L-shaped screw hole by the electric screwdriver, thus realizing the function of semi-automatic locking of the top cover pad. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] The present invention will now be described in further detail with reference to the accompanying drawings.

[0010] Figure 1 This is a structural diagram of a semi-automatic gasket locking machine; Figure 2 This is a detailed enlarged view of the cross screw head, L-shaped screw hole plate, and grounding pad of a semi-automatic gasket locking machine; Figure 3 This is a structural diagram of the top cover product.

[0011] In the picture: 1. Cylinder; 2. Screw suction pipe; 3. Electric screwdriver; 301. Phillips head screw; 4. Circular vibratory feeder; 5. Guide rail; 6. Straight vibrating table; 7. Top cover product; 701. Column; 702. Three-pronged positioning column; 703. L-shaped screw hole plate; 8. Photoelectric sensor; 9. Positioning plate; 10. Grounding pad; 11. Slide rail bracket; 12. L-shaped mounting base. Detailed Implementation

[0012] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0013] like Figure 1-3 As shown, this utility model discloses a semi-automatic gasket locking machine, including a horizontal worktable and a vertical support. A circular vibrating plate 4, a vertical vibrating table 6, and a positioning plate 9 are fixedly installed on the surface of the horizontal worktable. A guide rail 5 is fixedly installed on the vibrating end face of the top of the vertical vibrating table 6 by bolts. A grounding pad 10 is laid on the surface of the track groove of the guide rail 5. A photoelectric sensor 8 is installed through the positioning plate 9. A top cover product 7 is snapped onto the positioning plate 9. A column 701, a three-pronged positioning column 702, and an L-shaped screw hole piece 703 are fixedly installed on the surface of the top cover product 7. The positioning plate 9 has positioning holes that fit into the column 701 and the three-pronged positioning column 702. The L-shaped screw hole piece 703 overlaps the top surface of the positioning plate 9. A slide rail bracket 11 is fixedly installed on the vertical support. A cylinder 1 is fixedly mounted on the surface of the frame 11. An L-shaped mounting base 12 is slidably mounted on the slide rail of the slide rail bracket 11. An electric screwdriver 3 is fixedly mounted on the horizontal end of the L-shaped mounting base 12. The electric screwdriver 3 includes a motor and a cross screw rod 301 directly connected to the motor shaft. The push rod of the cylinder 1 is connected to the top of the electric screwdriver 3. A screw suction device is provided on the back of the vertical bracket. The screw suction device includes a screw feeder, a screw suction pipe 2 and an air compressor. The output end of the screw suction pipe 2 is located directly above the screw hole of the L-shaped screw hole plate 703. A PLC controller is fixedly mounted on one side of the positioning plate 9. The cylinder 1 is connected to a four-way solenoid regulating valve through a pipe. The four-way solenoid regulating valve, the electric screwdriver 3, the vertical vibration table 6 and the photoelectric sensor 8 are all electrically connected to the PLC controller.

[0014] Example 1: I. Overall Structure and Layout of the Equipment This semi-automatic gasket locking machine includes a horizontal worktable, a vertical support frame, and the following core functional modules: The feeding module consists of a circular vibratory plate 4, a vertical vibrating table 6, and a guide rail 5, which realizes the automatic directional conveying of the grounding pad 10. Positioning module: Composed of positioning plate 9, photoelectric sensor 8 and top cover product 7, it realizes precise positioning of parts and detection of assembly status; Locking module: Composed of cylinder 1, slide rail bracket 11, L-shaped mounting base 12 and electric screwdriver 3, it completes the automatic screw picking and tightening action; Screw feeding module: It consists of a screw feeder, a screw suction pipe 2 and an air compressor, which realizes the continuous supply of screws; The control module consists of a PLC controller, a four-way solenoid regulating valve, and a human-machine interface such as a touch screen, which coordinates the timing of the actions of each component.

[0015] II. Detailed Structure and Connection Relationships of Each Module 1. Feeding module Circular vibratory plate 4: Fixed on the left side of the horizontal workbench, it generates high-frequency vibration through an electromagnet, causing the grounding pad 10 to rise along the spiral track to the discharge port; The linear vibrating table 6 is installed on the right side of the circular vibrating plate 4. Its vibrating end face is fastened to the guide rail 5 by bolts, and the grounding pad 10 is conveyed to the end of the positioning plate 9 through linear vibration. Guide rail 5: The width of the track groove matches the outer diameter of the grounding pad 10, and the end is aligned with the groove of the positioning plate 9 to ensure accurate positioning of the pad.

[0016] 2. Positioning module Positioning plate 9: Fixed to the center of the horizontal worktable, with the following structure on its surface: Positioning holes: These holes are fitted into the pillars 701 and the three-pronged positioning pins 702 of the top cover product 7 to achieve positioning in the X / Y directions. Groove: A horizontal plate that supports the L-shaped screw hole plate 703. Its depth is consistent with the thickness of the washer to ensure axial alignment of the screw holes; Photoelectric sensor 8: Embedded on the side of the positioning plate 9, it detects whether the top cover product 7 is in place and feeds the signal back to the PLC controller.

[0017] 3. Locking Module Cylinder 1: Vertically mounted on the top of the vertical bracket, the push rod is connected to the electric screwdriver 3 through a floating joint to provide downward pressure; Slide rail bracket 11: Fixed to the front of the vertical bracket, its T-shaped slide rail is engaged with the T-shaped slide groove of the L-shaped mounting base 12, restricting the movement direction to vertical lifting; Electric screwdriver 3: Drives the cross screw rod 301 to rotate via a motor. The speed and torque are adjustable. It is installed on the horizontal end of the L-shaped mounting base 12. The axis of the cross screw rod 301 coincides with the center of the screw hole of the L-shaped screw hole plate 703.

[0018] 4. Screw feeding module Screw feeder: It has a built-in vibratory feeder and a feeding mechanism to arrange screws into the inlet of screw suction pipe 2; Screw suction tube 2: It adopts a flexible vacuum tube, with the output end fixed to the side of the slide rail bracket 11. Its outlet is directly above the screw hole of the L-shaped screw hole plate 703. The negative pressure is generated by the air compressor to adsorb the screw.

[0019] 5. Control Module PLC controller: Receives signals from photoelectric sensor 8, controls the extension and retraction of cylinder 1, the start and stop of electric screwdriver 3, and the vibration frequency of vertical vibration table 6; Four-way solenoid regulating valve: connects cylinder 1 to air source, adjusts air pressure through PLC output signal, and controls the pressing speed and force of electric screwdriver 3.

[0020] III. Equipment Workflow 1. Initial state Cylinder 1 is in the retracted position, and electric screwdriver 3 is in the highest position; The circular vibratory plate 4 and the straight vibrating table 6 are started, continuously conveying the grounding pad 10 to the end of the guide rail 5; The screw feeder has pre-stored screws, and the screw suction pipe 2 is in standby mode.

[0021] 2. Part positioning and inspection The operator inserts the column 701 and the three-pronged positioning column 702 of the top cover product 7 into the positioning hole of the positioning plate 9, and the L-shaped screw hole plate 703 is horizontally overlapped in the groove. The photoelectric sensor 8 detects the arrival signal of the top cover product 7 and sends it back to the PLC controller. The vertical vibration table 6 vibrates briefly, pushing the single grounding pad 10 below the horizontal plate of the L-shaped screw hole plate 703, thus completing the axial alignment of the pad and the screw hole.

[0022] 3. Screw fastening After receiving the positioning completion signal, the PLC controller performs the following actions: Screw adsorption: When the air compressor is started, the screw suction pipe 2 adsorbs the screw and keeps it in a vertical position; Electric screwdriver descent: Cylinder 1 push rod extends, driving L-shaped mounting base 12 to descend along slide rail, electric screwdriver 3 cross screw rod 301 inserts into screw head; Tighten the screw: The electric screwdriver 3 motor starts, and at the same time the cylinder 1 maintains downward pressure, and the screw is screwed into the screw hole of the grounding washer 10 and the L-shaped screw hole plate 703; Reset Waiting: After the set torque is reached, the electric screwdriver 3 stops, the cylinder 1 retracts, and the equipment returns to its initial state, waiting for the next operation.

[0023] IV. Key Technical Features and Innovations Precise positioning structure: The six degrees of freedom constraint of the top cover product 7 is achieved by the interlocking of the column 701, the three-pronged positioning column 702 and the positioning hole, with a positioning accuracy of ±0.05mm. The photoelectric sensor 8 and the groove structure provide dual detection to ensure that the L-shaped screw hole piece 703 is assembled in place.

[0024] High-efficiency material feeding system: A combination of 4 circular vibratory feeders and 6 linear vibratory tables allows for a conveying speed of 30-50 pieces / minute. The screw suction tube 2 uses a vacuum suction method to prevent the screw from falling off or getting stuck.

[0025] Flexible locking control: The PLC controller automatically adjusts the speed of electric screwdriver 3 (500-3000 rpm) and the pressure of cylinder 1 (0.2-0.6 MPa) according to the screw specifications. The T-shaped slide rail of the slide rail bracket 11 cooperates with the T-shaped slide groove of the L-shaped mounting base 12 to eliminate movement wobble and ensure that the screw is inserted vertically into the hole.

[0026] In the preferred technical solution, the discharge port of the circular vibratory plate 4 is located directly above the track groove of the guide rail 5. The top of the positioning plate 9 is provided with a groove for the L-shaped screw hole plate 703 to overlap. The horizontal plate of the L-shaped screw hole plate 703 is provided with a screw hole that mates with the grounding pad 10. When the horizontal plate of the L-shaped screw hole plate 703 overlaps with the top groove of the positioning plate 9, the horizontal plate of the L-shaped screw hole plate 703 is aligned with the end of the track groove of the guide rail 5. When the horizontal plate of the L-shaped screw hole plate 703 overlaps with the top groove of the positioning plate 9, the horizontal plate of the L-shaped screw hole plate 703 is flush with the end plane of the track groove of the guide rail 5, so that the grounding pad 10 and the horizontal plate of the L-shaped screw hole plate 703 can be vertically stacked and aligned. The track groove of the guide rail 5 is filled with grounding pads 10, and the grounding pads 10 are conveyed by vibration.

[0027] In the preferred technical solution, the slide rail of the slide rail bracket 11 has a T-shaped cross section, and the back of the L-shaped mounting base 12 is provided with a T-shaped groove that slides and engages with the slide rail, so that the L-shaped mounting base 12 can move vertically only on the slide rail of the slide rail bracket 11.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A semi-automatic lock washer machine characterized by, The system includes a horizontal worktable and a vertical support. A circular vibratory plate (4), a vertical vibratory table (6), and a positioning plate (9) are fixedly mounted on the surface of the horizontal worktable. A guide rail (5) is fixedly mounted on the vibrating end face of the top of the vertical vibratory table (6) by bolts. A grounding pad (10) is laid on the surface of the track groove of the guide rail (5). A photoelectric sensor (8) is installed through the positioning plate (9). A top cover product (7) is snapped onto the positioning plate (9). A column (701), a three-pronged positioning column (702), and an L-shaped screw hole plate (703) are fixedly mounted on the surface of the top cover product (7). The positioning plate (9) has positioning holes that fit into the column (701) and the three-pronged positioning column (702). The L-shaped screw hole plate (703) overlaps the top surface of the positioning plate (9). A slide rail bracket (11) is fixedly mounted on the vertical support. A cylinder (1) is fixedly mounted on the surface. An L-shaped mounting base (12) is slidably mounted on the slide rail of the slide rail bracket (11). An electric screwdriver (3) is fixedly mounted on the horizontal end of the L-shaped mounting base (12). The electric screwdriver (3) includes a motor and a cross screw rod directly connected to the motor shaft of the motor. The push rod of the cylinder (1) is connected to the top of the electric screwdriver (3). A screw suction device is provided on the back of the vertical bracket. The screw suction device includes a screw feeder, a screw suction pipe (2), and an air compressor. The output end of the screw suction pipe (2) is located directly above the screw hole of the L-shaped screw hole plate (703). A PLC controller is fixedly mounted on one side of the positioning plate (9). The cylinder (1) is connected to a four-way electromagnetic regulating valve through a pipe. The four-way electromagnetic regulating valve, the electric screwdriver (3), the vertical vibration table (6), and the photoelectric sensor (8) are all electrically connected to the PLC controller.

2. The semi-automatic lock pad machine of claim 1, wherein, The discharge port of the circular vibratory plate (4) is located directly above the track groove of the guide rail (5). The top of the positioning plate (9) is provided with a groove for the L-shaped screw hole plate (703) to overlap. The horizontal plate of the L-shaped screw hole plate (703) is provided with a screw hole that cooperates with the grounding pad (10). When the horizontal plate of the L-shaped screw hole plate (703) overlaps with the groove at the top of the positioning plate (9), the horizontal plate of the L-shaped screw hole plate (703) is connected to the end of the track groove of the guide rail (5).

3. The semi-automatic lock pad machine of claim 1, wherein, The slide rail of the slide rail bracket (11) has a T-shaped cross section, and the back of the L-shaped mounting base (12) is provided with a T-shaped groove that is slidably fitted with the slide rail.

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