Automatic screw and gasket machine

Abstract

An automatic screw-threading gasket machine comprises an electrical system and a mechanical system, wherein the electrical system comprises a power supply module, a control module, an execution module and a detection module, and the mechanical system comprises a screw positioning structure, a gasket positioning structure, a vibration plate fixing structure and a noise reduction structure; the execution module comprises a cylinder, a vibration plate and a direct vibration, and the vibration plate is connected to the direct vibration; the cylinder comprises three thin-walled cylinders, including a downward pressure cylinder, a horizontal push cylinder and a lifting cylinder; the present invention is simple and quick to operate, and the operator only needs to add screws and gaskets to the vibration plate on time, and can free up the remaining energy to do other work, which greatly improves the utilization rate of human resources; the production efficiency is high, and the design structure of the three cylinders' rapid linkage shortens the time for the equipment to thread a gasket once to about 0.5s, and the daily output is several times that of manual labor.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and specifically relates to an automatic screw-threading gasket machine. Background Art

[0002] Today's machinery industry is constantly developing. No matter which industry in the machinery, screws and washers will be used. More occasions also require screws to be threaded with washers. Traditionally, washers are installed on screws by workers manually, and washers need to be threaded on each screw. Since screws are produced in large quantities, a large number of workers are required to manually thread washers, which is slow and inefficient, increases labor costs, and is not suitable for large-scale production. In addition, effective positioning is required for screws to be threaded with washers. Traditional device positioning is prone to deviations and is not suitable for continuous production. At the same time, over-threading or missing threading may occur, and the quality does not meet uniform standards. The device must be frequently inspected. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automatic screw-threading and gasketing machine, which is specially designed for the assembly of engine screws and gaskets. It controls the linkage of multiple cylinders through a single-chip control board, completely replaces manual work, saves human resources, and improves production efficiency.

[0004] The technical solution adopted by the present invention is:

[0005] An automatic screw-threading gasket machine includes an electrical system and a mechanical system. The electrical system includes a power supply module, a control module, an execution module and a detection module. The mechanical system includes a screw positioning structure, a gasket positioning structure, a vibration plate fixing structure and a noise reduction structure. The execution module includes a cylinder, a vibration plate and a direct vibration. The vibration plate is connected to the direct vibration. The cylinder has three thin-walled cylinders, including a downward pressure cylinder, a horizontal push cylinder and a lifting cylinder.

[0006] The downward pressure cylinder is fixedly arranged at the front end of the screw push block through the downward pressure cylinder fixing plate, and a screw positioning block is arranged under the piston of the downward pressure cylinder; the other end of the screw push block is connected to the track of the screw push block, and the track of the screw push block is fixedly connected to the slide of the horizontal push cylinder; the horizontal push cylinder is fixed to the working plate through the horizontal push cylinder fixing plate, and the gasket positioning block is fixed to the working plate. The center of the gasket fixing block is hollow, and the bottom is connected to the piston of the jacking cylinder, and the working plate is fixed to the frame through a screw rod.

[0007] The screw positioning structure consists of three parts: a screw direct vibration, a downward pressure cylinder and a screw positioning block. The screw direct vibration is located on one side of the screw push block, the screw positioning block is located directly below the downward pressure cylinder, and the screw positioning block is fixed on the platform of the horizontal push cylinder and moves back and forth with the extension and retraction of the horizontal push cylinder.

[0008] The gasket positioning mechanism consists of four parts: a gasket direct vibration, a lifting cylinder, a gasket positioning block and a gasket pressing block. The gasket pressing block is fixed to the front end of the screw positioning block and moves back and forth with the screw positioning block. When the push cylinder is in a retracted state, the gasket pressing block is at the top of the gasket positioning block.

[0009] The vibration plate fixing structure comprises a screw vibration plate and a gasket vibration plate, which are separated and fixed in a spiral step-type manner, and the two vibration plates are respectively located on both sides of the entire device.

[0010] The noise reduction structure is located on the upper part of the equipment frame and surrounds the upper part of the equipment.

[0011] The beneficial effects of the present invention are as follows: the present invention is simple and quick to operate, and the operator only needs to add screws and gaskets to the vibration plate on time to free up the remaining energy for other work, which greatly improves the utilization rate of human resources; the production efficiency is high, and the design structure of the three cylinders quickly linked shortens the time for the equipment to wear the gasket once to about 0.5s, and the daily output is several times the manual output. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention.

[0013] Figure 2 The structure of the execution module of the present invention is shown in FIG. Figure 1 .

[0014] Figure 3 The structure of the execution module of the present invention is shown in FIG. Figure 2 .

[0015] Figure 4 It is a front view of the execution module of the present invention.

[0016] Figure 5 It is a rear view of the execution module of the present invention.

[0017] Figure 6 The structure of the screw push block of the present invention is schematically shown in FIG. Figure 1 .

[0018] Figure 7 The structure of the screw push block of the present invention is schematically shown in FIG. Figure 2 .

[0019] Figure 8 It is a structural schematic diagram of the gasket positioning block of the present invention.

[0020] Fig. 9 It is an operation flow chart of the present invention.

[0021] Fig.10 The present invention is a flow chart of the action of three cylinders working together to complete a single screw gasket threading.

[0022] Fig.11 It is a specific working principle diagram of the present invention.

[0023] In the figure, 1, gasket direct vibration, 2, gasket, 3, lifting cylinder, 4, gasket pressure block, 5, downward pressure cylinder fixing plate, 6, downward pressure cylinder, 7, track, 8, cylinder slide fixing block, 9, horizontal push cylinder slide, 10, horizontal push cylinder, 11, frame, 12, screw, 13, screw rod, 14, horizontal push cylinder fixing plate, 15, screw direct vibration, 16, screw push block, 17, screw positioning block, 18, gasket positioning block, 19, screw positioning slot, 20, downward pressure cylinder fixing part mounting hole, 21, blowing hole, 22, sensor detection opening slot, 23, gasket positioning slot, 24, screw vibration disk, 25, gasket vibration disk. DETAILED DESCRIPTION

[0024] like Figure 1 — Fig.11 As shown, an automatic screw-threading gasket machine includes an electrical system and a mechanical system, wherein the electrical system includes a power supply module, a control module, an execution module and a detection module, and the mechanical system includes a screw positioning structure, a gasket positioning structure, a vibration plate fixing structure and a noise reduction structure; the execution module includes three parts: a cylinder, a vibration plate and a direct vibration, and the vibration plate is connected to the direct vibration; the cylinder has three thin-walled cylinders, including a downward pressure cylinder 6, a horizontal push cylinder 10 and a lifting cylinder 3.

[0025] The downward pressure cylinder 6 is fixedly arranged at the front end of the screw push block 16 through the downward pressure cylinder fixing plate 5, and a screw positioning block 17 is arranged under the piston of the downward pressure cylinder 6; the other end of the screw push block 16 is connected to the track 7 of the screw push block 16, and the track 7 of the screw push block 16 is fixedly connected to the horizontal push cylinder slide 9; the horizontal push cylinder 10 is fixed to the working plate through the horizontal push cylinder fixing plate 14, and the gasket positioning block 18 is fixed to the working plate. The center of the gasket fixing block 18 is hollow, and the bottom is connected to the piston of the jacking cylinder 3, and the working plate is fixed to the frame 11 through the screw rod 13.

[0026] The screw positioning structure is composed of three parts: a screw direct vibration 15, a downward pressure cylinder 6 and a screw positioning block 17. The screw direct vibration 15 is located on one side of the screw push block 16, the screw positioning block 17 is located directly below the downward pressure cylinder 6, and the screw positioning block 17 is fixed on the platform of the horizontal push cylinder 10 and moves back and forth with the extension and retraction of the horizontal push cylinder 10.

[0027] The gasket positioning mechanism is composed of four parts: a gasket direct vibration 1, a lifting cylinder 3, a gasket positioning block 18 and a gasket pressing block 4. The gasket pressing block 4 is fixed to the front end of the screw positioning block 17 and moves back and forth with the screw positioning block 17. When the push cylinder 10 is in a retracted state, the gasket pressing block 4 is at the top of the gasket positioning block 18.

[0028] The vibration plate fixing structure includes a screw vibration plate 24 and a gasket vibration plate 25, which are separated and fixed in a spiral step-type manner, and the two vibration plates are respectively located on both sides of the entire device.

[0029] The noise reduction structure is located on the upper part of the equipment frame and surrounds the upper part of the equipment.

[0030] An automatic screw-threading and gasketing machine comprises an electrical system and a mechanical system. The electrical system comprises a power supply module, a control module, an execution module and a detection module. The mechanical system comprises a screw positioning structure, a gasket positioning structure, a vibration plate fixing structure and a noise reduction structure.

[0031] The power supply module includes two parts, DC and AC. The AC 220V is connected to the equipment through a three-pin plug, and provides 220V working voltage for the switching power supply, vibration plate controller and direct vibration controller through a 2P circuit breaker; the DC 24V 2A switching power supply provides power for the microcontroller, sensor and solenoid valve respectively.

[0032] The control module comprises five parts: a single chip control board, a solenoid valve, an emergency stop button, a three-position knob and a common button.

[0033] The single-chip microcomputer control board selected by the present invention has a simple structure and low cost. Its internal program can be programmed by a PC using Mitsubishi PLC programming software. It is simple and easy to operate and is very suitable for equipment with a small number of control points.

[0034] There are 4 solenoid valves in total, three of which are used to control the corresponding cylinder movements, and the last solenoid valve controls the blowing, which is used to blow the screws that have been penetrated by the gasket in the screw fixing block out of the positioning groove.

[0035] The function of the emergency stop button is to quickly cut off the power supply of the vibration plate controller and the direct vibration controller, and at the same time input a stop signal to the microcontroller control board.

[0036] The function of the three-position knob is to switch the equipment between single-action operation and automatic operation, and to control the single-action action of the push cylinder 10.

[0037] There are two ordinary buttons: start and stop, which control the operation and stop of the equipment respectively.

[0038] The execution module includes three parts: a cylinder, a vibration plate and a direct vibration; the cylinder has three thin-walled cylinders, a downward pressure cylinder 6, a horizontal push cylinder 10 and a lifting cylinder 3. The downward pressure cylinder 6 presses the vertical screws sent into place by the direct vibration to prevent the screws from tilting or shifting when the horizontal push cylinder 10 moves; the horizontal push cylinder 10 pushes the screws pressed by the downward pressure cylinder 6 to the position where the gasket is inserted; the lifting cylinder 3 pushes the screw gasket 2 sent into place by the gasket direct vibration 1 upwards, completing the action of the gasket 2 passing through the top of the screw 12.

[0039] The piston of the push cylinder 10 is connected to the push cylinder slide 9 by bolts, and the push cylinder slide 9 is fixed to the side of the track 7 by bolts and a cylinder slide fixing block 8.

[0040] The vibration plate is divided into a screw vibration plate 24 and a gasket vibration plate 25; the screw vibration plate 24 arranges the scattered screws 12 into a vertical row with the screw heads facing upward; the gasket vibration plate 25 arranges the scattered and irregular gaskets 2 into a horizontal row.

[0041] The direct vibration is divided into screw direct vibration 15 and gasket direct vibration 1. The direct vibration is a horizontal straight track connected to the vibration plate track but vibrates independently. A proximity sensor is installed in the middle of the direct vibration. Its function is that when a certain number of screws vibrated by the vibration plate enter the direct vibration track, the sensor outputs a signal to the vibration plate controller to stop the vibration of the vibration plate, thereby preventing the screws 12 from stacking in the screw positioning groove 19; the working principle of the gasket direct vibration 1 is the same as that of the screw direct vibration 15.

[0042] The detection module includes a sensor and an audible and visual alarm. The sensors include three types: a proximity sensor, a magnetic switch and a pressure sensor. The proximity sensor is divided into a screw sensor and a gasket sensor, which are respectively installed at the exit positions of the screw direct vibration and the gasket direct vibration. Their function is to detect whether the screws and gaskets are in place; a magnetic switch is installed on the upper side of the outer wall of the jacking cylinder to detect whether the gasket is in place; the pressure sensor detects the air pressure value on the air supply side. When the air pressure is less than the set 0.6MPa, an alarm signal is output to the single-chip microcomputer control board.

[0043] The audible and visual alarm will sound when an error occurs in the device.

[0044] The screw positioning structure is composed of three parts: a screw direct vibration 15, a downward pressure cylinder 6 and a screw positioning block 17. When the screw direct vibration 15 vibrates the screw 12 into the screw positioning block 17, the screw 12 entering the screw positioning block 17 will always be subjected to the horizontal thrust of the screw in the rear screw direct vibration 15. When the downward pressure cylinder 6 drives the pressure block at the top of the cylinder shaft to press the screw head, the entire screw positioning action is completed. Among them, the downward pressure cylinder 6 is fixed above the screw positioning block 17, and the screw positioning block 17 is fixed on the platform of the horizontal push cylinder 10, and can move forward and backward with the extension and retraction of the horizontal push cylinder 10.

[0045] The screw positioning block 17 is located at the end of the screw push block 16, and a screw positioning groove 19 is provided in the middle of the front side of the screw positioning block 17. The rear side of the screw positioning block 17 is provided with two downward pressure cylinder fixing part mounting holes 20 and a blowing hole 21, the blowing hole 21 is a through hole, and the downward pressure cylinder fixing part mounting hole 20 is not a through hole and has an internal thread.

[0046] The gasket positioning mechanism is composed of four parts: a gasket direct vibration 1, a lifting cylinder 3, a gasket positioning block 18 and a gasket pressing block 4. When the gasket direct vibration 1 vibrates the gasket 2 into the gasket positioning block 18, the gasket 2 entering the gasket positioning block 18 will always be subjected to the horizontal thrust of the gasket 2 in the gasket direct vibration 1 behind. The gasket pressing block 4 is fixed to the front end of the screw positioning block 17 and can move back and forth with the screw positioning block 17. When the horizontal push cylinder 10 is in a contracted state, the gasket pressing block 4 is at the top of the gasket positioning block 18 to prevent the gasket 2 from flipping over due to excessive horizontal thrust from behind, or even detaching from the gasket positioning groove 23.

[0047] A gasket positioning groove 23 is provided at the end of the gasket positioning block 18 , and a sensor detection opening groove 22 is provided on one side of the gasket positioning groove 23 .

[0048] The vibration plate fixing structure includes a screw vibration plate 24 and a gasket vibration plate 25, which are separated and fixed in a spiral step-by-step manner. The two vibration plates are respectively located on both sides of the entire device. The screw 12 and the gasket 2 are respectively moved into the positioning position through the matching direct vibration. This step-by-step separation and fixing structure can prevent the two vibration plates from interfering with each other and affecting the transmission effect.

[0049] The noise reduction structure is located on the upper part of the equipment frame 11, surrounding the upper part of the equipment. Since the two vibration plates generate relatively loud noise during operation, affecting the surrounding environment, the present invention designs a noise reduction structure, that is, a transparent wide latex pad is used to surround the upper part of the equipment to isolate most of the noise.

[0050] The present invention uses a single-chip microcomputer control board as the main control core, collects sensor signals and button input signals through the IO input port, controls the action of the solenoid valve through the IO output port, and displays the operating status of the equipment with indicator lights and buzzers. The PC can write and modify the internal program of the single-chip microcomputer control board through a dedicated download line. The specific working principle of the present invention is as follows Fig.11 shown.

[0051] The operation of the present invention is simple. Before starting, you only need to put the screws and gaskets into the corresponding vibration plate and start the equipment. The specific operation process is as follows: Fig. 9 As shown:

[0052] The action flow chart of three-cylinder linkage to complete a single screw gasket insertion is as follows Fig.10 shown.

[0053] 1. The two vibration plates and two direct vibrations work independently. When the equipment has an audible and visual alarm (for example, a screw is inserted into a non-standard gasket and causes a jam), the action of the three cylinders will stop immediately, but the vibration plates and direct vibrations are still working. Only when the operator manually presses the emergency stop button will all vibration plates and direct vibrations stop running immediately.

[0054] 2. When the air pressure of the air source supplying the equipment is lower than the 0.6MPa set by the pressure sensor, the three cylinders will stop working immediately and the sound and light alarm will be triggered.

[0055] 3. The three-cylinder linkage adopted in the present invention has rapid action. From the time the sensor detects that the screw and the gasket are in place to the completion of one gasket threading action, the total time is about 0.5s.

[0056] 4. During the normal operation of the equipment, if the vibration plate is short of material, you can add material directly into the vibration plate without stopping the machine.

[0057] 5. When the three-position knob is rotated to the single-action position, press the start button and the equipment will stop after completing one pad threading action.

[0058] Control module: The single-chip control board can be replaced by PLCs such as Mitsubishi, Panasonic, and Siemens.

[0059] Control module: The operating buttons can be replaced by a touch screen.

[0060] Actuator module: The three thin-walled cylinders can be replaced by a combination of a stepper motor and a roller screw.

Claims

1. An automatic screw and gasket machine, characterized in that: It comprises an electrical system and a mechanical system, wherein the electrical system comprises a power supply module, a control module, an execution module and a detection module, and the mechanical system comprises a screw positioning structure, a gasket positioning structure, a vibration plate fixing structure and a noise reduction structure; the execution module comprises a cylinder, a vibration plate and a direct vibration, wherein the vibration plate is connected to the direct vibration; the cylinder comprises three thin-walled cylinders, including a downward pressure cylinder (6), a horizontal push cylinder (10) and a lifting cylinder (3), wherein the downward pressure cylinder (6) is fixedly arranged on a screw push block (16) via a downward pressure cylinder fixing plate (5) A screw positioning block (17) is arranged at the front end of the push cylinder (6); the other end of the screw push block (16) is connected to the track (7) of the screw push block (16); the track (7) of the screw push block (16) is fixedly connected to the horizontal push cylinder slide (9); the horizontal push cylinder (10) is fixed to the working plate through the horizontal push cylinder fixing plate (14); the gasket positioning block (18) is fixed to the working plate; the center of the gasket fixing block (18) is hollow and the bottom is connected to the piston of the lifting cylinder (3); the working plate is fixed to the frame (11) through the screw rod (13); The screw positioning structure is composed of three parts: a screw direct vibration (15), a downward pressure cylinder (6) and a screw positioning block (17). The screw direct vibration (15) is located on one side of the screw push block (16), the screw positioning block (17) is located directly below the downward pressure cylinder (6), and the screw positioning block (17) is fixed on the platform of the horizontal push cylinder (10) and moves forward and backward with the extension and retraction of the horizontal push cylinder (10). The gasket positioning mechanism is composed of four parts: a gasket direct vibration (1), a lifting cylinder (3), a gasket positioning block (18) and a gasket pressing block (4). The gasket pressing block (4) is fixed to the front end of the screw positioning block (17) and moves forward and backward with the screw positioning block (17). When the horizontal push cylinder (10) is in a retracted state, the gasket pressing block (4) is located on the top of the gasket positioning block (18). The vibration plate fixing structure comprises a screw vibration plate (24) and a gasket vibration plate (25), which are separated and fixed in a spiral step-type manner, and the two vibration plates are respectively located on both sides of the entire device.

2. The automatic screw and gasket inserting machine according to claim 1, characterized in that: The noise reduction structure is located on the upper part of the equipment frame and surrounds the upper part of the equipment.

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