An automatic screwing machine

Abstract

The application relates to an automatic screw locking machine, comprising a machine table, a speed-up chain line body provided with a plurality of trays, the trays being provided with products to be assembled, a screw driving unit for driving screws on the products to be assembled on the trays, a jacking positioning unit arranged at a position opposite to the screw driving unit, and the jacking positioning unit being used for pushing the trays to separate the trays from the speed-up chain line body. The automatic screw locking machine can realize the screw locking function automatically, replace the traditional semi-automatic equipment, greatly improve the yield, and greatly improve the efficiency.

Description

Technical Field

[0001] This invention relates to the field of automation equipment technology, and in particular to an automatic screw fastening machine. Background Technology

[0002] Most products require a lot of screws for assembly and fixation. Currently, screwing is mostly done manually or by a single-axis screw-driving machine.

[0003] When this was done manually, the following problems were found during the production process: 1. Generally, it is necessary to use an electric screwdriver manually to tighten screws, which is time-consuming and labor-intensive. During operation, the axis of the electric screwdriver, the axis of the screw, and the axis of the threaded hole must be in a straight line to avoid skewing or shaking. Otherwise, it is easy to cause problems such as loose screws, stripped threads, bursting screws, and damaged screw heads. In addition, the torque for tightening screws should not be too large. This requires workers to have rich experience in order to complete the production task as required.

[0004] 2. The existing screw-driving method requires manual removal of parts, and operators need to press down one by one, which is inefficient; long-term repetitive operation is labor-intensive and operators are prone to fatigue; labor costs are high; and it is not conducive to large-scale and automated production.

[0005] 3. Manual operation can also lead to problems such as uneven tightening force, inconsistent operation, and unreliable product quality.

[0006] When using a single-axis screwdriver, the screw feeding is slow, and the electric or pneumatic screwdriver needs to move repeatedly between multiple screw holes. This results in low production efficiency for products with a large number of screws, which is not conducive to reducing production costs. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the operation of handheld electric screwdrivers or single-axis screwdrivers in the prior art is relatively complicated and inefficient when workers perform product assembly operations.

[0008] To solve the above-mentioned technical problems, the present invention provides an automatic screw fastening machine, comprising: a machine base; a double-speed chain conveyor with a plurality of trays mounted thereon, the double-speed chain conveyor driving the plurality of trays to move, the trays having products to be assembled on them; and at least one screw-driving unit mounted on the machine base, the screw-driving unit being used to drive screws onto the products to be assembled on the trays, the screw-driving units being arranged sequentially along the conveying direction of the double-speed chain conveyor; and a lifting and positioning unit being provided at the position of the machine base opposite to the screw-driving unit, the lifting and positioning unit being used to push the trays to separate the trays from the double-speed chain conveyor. The screw fastening unit includes a vibrating feeding tray, an X-axis moving mechanism, a tightening mechanism, a pressing mechanism, a side pushing mechanism, and a waste collection mechanism. The vibrating feeding tray and the X-axis moving mechanism are both mounted on the machine base. The tightening mechanism is mounted on the X-axis moving mechanism. The tightening mechanism is used to pick up screws from the vibrating feeding tray and transfer them to the products to be assembled on the tray, and to tighten the screws into the products. The pressing mechanism is used to press the products to be assembled on the tray. The side pushing mechanism is used to push the tray to the screw assembly position. The waste collection mechanism is used to collect defective screws. This automatic screw fastening machine achieves automatic screw feeding and automatic screw fastening, with good product positioning, an extremely low failure rate, and dual-station step-by-step fastening, which can significantly reduce cycle time. While significantly reducing costs, it also achieves fully automatic fastening and greatly increases production capacity.

[0009] In one embodiment of the present invention, the pallet includes a pallet base plate, a product positioning seat, and a product positioning pin. The pallet base plate is placed on the double-speed chain conveyor body. The product positioning seat is fixedly mounted on the pallet base plate and is used to position the product. The product positioning pin is mounted on the product positioning seat, and the positioning hole on the product is fitted onto the product positioning pin to achieve product positioning.

[0010] In one embodiment of the present invention, the lifting and positioning unit includes a fixed bracket, a lifting drive cylinder, a lifting push plate, a side push positioning column, several top blocks, and a lifting guide column. The fixed bracket is fixedly mounted on the machine base. The lifting drive cylinder is mounted on the fixed bracket. The lifting push plate is connected to the output end of the lifting drive cylinder. The side push positioning column and several top blocks are disposed on the upper surface of the lifting push plate. The upper end of the lifting guide column is connected to the lifting push plate. The fixed bracket is provided with a guide sleeve. The lifting guide column passes through the guide sleeve and can slide within the guide sleeve. The lifting drive cylinder drives the top blocks to move upward and contact the pallet bottom plate to drive the pallet bottom plate to separate from the double-speed chain line.

[0011] In one embodiment of the present invention, the side-push mechanism includes a side-push support, a side-push cylinder, and a side-push pad. The side-push support is fixedly installed on the machine base, the side-push cylinder is installed on the side-push support, the side-push pad is connected to the output end of the side-push cylinder, and the side-push cylinder drives the side-push pad to contact the side wall of the pallet bottom plate and push the pallet bottom plate to move.

[0012] In one embodiment of the present invention, the X-axis moving mechanism includes an X-axis support base, an X-axis cylinder, an X-axis guide rail, an X-axis slider, and an X-axis sliding plate. The X-axis support base is fixedly mounted on the machine base, the X-axis cylinder is mounted on the X-axis support base, the X-axis guide rail is disposed on the X-axis support base, the X-axis slider is mounted on the X-axis sliding plate, the X-axis sliding plate is connected to the output end of the X-axis cylinder, the X-axis slider is disposed on the X-axis guide rail and can slide along the X-axis guide rail, and the tightening mechanism is disposed on the X-axis sliding plate.

[0013] In one embodiment of the present invention, the tightening mechanism includes a cylinder, a longitudinal slide plate, a longitudinal guide rail, a longitudinal slider, a tightening module, and a screw-taking module. The cylinder and the longitudinal guide rail are both mounted on the X-axis slide plate. The output ends of the longitudinal slide plate and the cylinder are connected. The longitudinal slider is mounted on the longitudinal slide plate and is disposed on the longitudinal guide rail, and the longitudinal slider can slide along the longitudinal guide rail. The tightening module and the screw-taking module are both mounted on the longitudinal slide plate. The screw-taking module is used to pick up screws, and the tightening module is used to tighten screws.

[0014] In one embodiment of the present invention, the screw-picking module includes a slider, a suction nozzle bracket, a suction nozzle, and a spring. A longitudinal guide rail is provided on the longitudinal slide plate, the slider is disposed on the longitudinal guide rail and can slide along the longitudinal guide rail. The suction nozzle bracket is mounted on the slider and the suction nozzle is disposed on the suction nozzle bracket. One end of the spring is connected to the longitudinal slide plate and the other end of the spring is connected to the suction nozzle bracket. The suction nozzle is used to pick up screws.

[0015] In one embodiment of the present invention, the tightening module includes a second cylinder, a screw gun, a mounting bracket, a second slider, and a screw wrench. The second cylinder is mounted on a longitudinal slide plate, the mounting bracket is connected to the output end of the second cylinder, the screw gun is mounted on the mounting bracket, the second slider is connected to the mounting bracket, the second slider is disposed on a second longitudinal guide rail, and the second slider can slide along the second longitudinal guide rail. The screw wrench is disposed on the screw gun, and the screw gun drives the screw wrench to tighten screws.

[0016] In one embodiment of the present invention, the pressing mechanism includes a pressing support bracket, a pressing drive cylinder, a pressing guide rail, a pressing slider, and a pressing frame. The pressing support bracket is fixedly mounted on the machine base. The pressing drive cylinder and the pressing guide rail are disposed on the pressing support bracket. The pressing frame is connected to the output end of the pressing drive cylinder. The pressing drive cylinder drives the pressing frame to press the product on the tray. The pressing slider is connected to the pressing frame. The pressing slider is disposed on the pressing guide rail and can slide along the pressing guide rail.

[0017] In one embodiment of the present invention, the waste collection mechanism includes a cylinder mounting bracket, a waste receiving drive cylinder, and a waste box. The cylinder mounting bracket is fixedly mounted on a downward support bracket. The waste receiving drive cylinder is mounted on the cylinder mounting bracket. The waste box is connected to the output end of the waste receiving drive cylinder. The waste receiving drive cylinder drives the waste box to below the suction nozzle to collect defective screws.

[0018] Compared with the prior art, the above-described technical solution of the present invention has the following advantages: The automatic screw fastening machine of this invention uses a tray conveyed by a double-speed chain conveyor to the screw fastening unit. A lifting and positioning unit positions the tray, a side-pushing mechanism lifts the tray off the double-speed chain, and a pressing mechanism assists in tightening the product. Simultaneously, an automatic nail feeder continuously supplies nails. An X-axis moving mechanism first returns to its original position to pick up nails, then moves to the moving position, and finally, a tightening mechanism performs the automatic fastening action. This equipment is mainly used on automotive pump assembly lines, fully automating the screw fastening function and replacing traditional semi-automatic equipment (manual screw fastening). This significantly improves yield and efficiency. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of the automatic screw fastening machine in a preferred embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the automatic screw fastening machine in a preferred embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the pressing mechanism, the side pushing mechanism, and the waste collection mechanism in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the side-pushing mechanism, tray, and lifting and positioning unit in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the tray structure in a preferred embodiment of the present invention; Figure 6 This is a schematic diagram of the lifting and positioning unit in a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the screw-driving unit in a preferred embodiment of the present invention; Figure 8 This is a partial structural diagram of the screw-driving unit in a preferred embodiment of the present invention. Figure 1 ; Figure 9 This is a partial structural diagram of the screw-driving unit in a preferred embodiment of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the tightening mechanism and screw-removing module in a preferred embodiment of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the tightening mechanism and screw-removing module in a preferred embodiment of the present invention. Figure 2 ; Figure 12 This is a cross-sectional view of the suction nozzle in a preferred embodiment of the present invention; Figure 13 This is a schematic diagram of the pressing mechanism and the waste collection mechanism in a preferred embodiment of the present invention. Figure 1 ; Figure 14 This is a schematic diagram of the pressing mechanism and the waste collection mechanism in a preferred embodiment of the present invention. Figure 2 .

[0020] Instruction manual drawing reference numerals: 1. Machine base; 2. Speed-up conveyor; 3. Pallet; 3. Pallet base; 31. Side push positioning hole; 311. Product positioning seat; 32. Product positioning pin; 33. Screw-driving unit; 4. Vibrating feeder; 41. X-axis moving mechanism; 42. X-axis support seat; 421. X-axis cylinder; 422. X-axis guide rail; 423. X-axis slider; 424. X-axis slide plate; 425. Tightening mechanism; 43. Cylinder 1; 431. Longitudinal slide plate 1; 432. Longitudinal guide rail 1; 433. Longitudinal slider; 434. Tightening module; 435. Cylinder 2; 4351. Screw gun; 4352. Mounting bracket; 4353. Slide plate 2; 4354. Screw wrench; 4355. Screw removal mold. Group 436, slider 4361, suction nozzle bracket 4362, suction nozzle 4363, spring 4364, pressing mechanism 44, pressing support bracket 441, pressing drive cylinder 442, pressing guide rail 443, pressing slider 444, pressing frame 445, side push mechanism 45, side push support 451, side push cylinder 452, side push pad 453, waste collection mechanism 46, cylinder mounting bracket 461, waste collection drive cylinder 462, waste box 463, lifting and positioning unit 5, fixed bracket 51, lifting drive cylinder 52, lifting push plate 53, side push positioning column 54, several top blocks 55, lifting guide column 56, guide sleeve 57. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0022] Reference Figure 1 , 2 As shown, the automatic screw fastening machine of the present invention includes: a machine base 1; a double-speed chain conveyor 2 with a plurality of trays 3 mounted thereon, the double-speed chain conveyor 2 driving the plurality of trays 3 to move, the trays 3 having products to be assembled on them; and at least one screw-driving unit 4 mounted on the machine base 1, the screw-driving unit 4 being used to drive screws onto the products to be assembled on the trays 3, the screw-driving units 4 being arranged sequentially along the conveying direction of the double-speed chain conveyor 2, and a lifting and positioning unit 5 being provided at the position of the machine base 1 corresponding to the screw-driving unit 4, the lifting and positioning unit 5 being used to push the trays 3 to separate the trays 3 from the double-speed chain conveyor 2. When multiple screw-driving units 4 are provided, the multiple screw-driving units 4 are arranged along the conveying direction of the double-speed chain conveyor 2, so that when the double-speed chain conveyor 2 conveys the trays 3 to the position of the screw-driving unit 4, the trays 3 stop, and then the screw-driving unit 4 performs the screw-driving operation.

[0023] Reference Figure 7 As shown, the screw-driving unit 4 includes a vibrating feeding plate 41, an X-axis moving mechanism 42, a tightening mechanism 43, a pressing mechanism 44, a side-pushing mechanism 45, and a waste collection mechanism 46. The vibrating feeding plate 41 and the X-axis moving mechanism 42 are both mounted on the machine base 1. The tightening mechanism 43 is mounted on the X-axis moving mechanism 42. The tightening mechanism 43 is used to pick up the screws in the vibrating feeding plate 41 and transfer them to the products to be assembled on the tray 3. The tightening mechanism 43 is also used to tighten the screws into the products. The pressing mechanism 44 is used to press the products to be assembled on the tray 3. The side-pushing mechanism 45 is used to push the tray 3 to the screw assembly position. The waste collection mechanism 46 is used to collect defective screws.

[0024] Reference Figure 5 As shown, the pallet 3 includes a pallet base plate 31, a product positioning seat 32, and a product positioning pin 33. The pallet base plate 31 is placed on the double-speed chain body 2. The product positioning seat 32 is fixedly installed on the pallet base plate 31 and is used to position the product. The product positioning pin 33 is installed on the product positioning seat 32, and the positioning hole on the product is fitted onto the product positioning pin 33 to achieve product positioning.

[0025] Reference Figure 3 , 4As shown in Figure 6, the lifting and positioning unit 5 includes a fixed bracket 51, a lifting drive cylinder 52, a lifting push plate 53, a side push positioning column 54, several top blocks 55, and a lifting guide column 56. The fixed bracket 51 is fixedly mounted on the machine base 1. The lifting drive cylinder 52 is mounted on the fixed bracket 51. The lifting push plate 53 is connected to the output end of the lifting drive cylinder 52. The side push positioning column 54 and several top blocks 55 are disposed on the upper end surface of the lifting push plate 53. The upper end of the lifting guide column 56 is connected to the lifting push plate 53. The fixed bracket 51 is provided with a guide sleeve 57. The lifting guide column 56 passes through the guide sleeve 57 and can slide within the guide sleeve 57. The lifting drive cylinder 52 drives the top blocks 55 to move upward and contact the pallet bottom plate 31 to drive the pallet bottom plate 31 to separate from the double-speed chain line 2. A side-push positioning hole 311 is provided at the position directly opposite the side-push positioning post 54. The side-push positioning post 54 is a cylindrical shape with a hemispherical upper end. The side-push positioning hole 311 is a round hole, and the diameter of the side-push positioning hole 311 is larger than the diameter of the side-push positioning post 54. When the lifting drive cylinder 52 drives the top block 55 to move upward, the side-push positioning post 54 is inserted into the side-push positioning hole 311. Then, the side-push mechanism 45 pushes the pallet bottom plate 31 to move horizontally, so that the side-push positioning post 54 is pressed against the inner wall of the side-push positioning hole 311. Through this action, the pallet bottom plate 31 is moved to the screw assembly position.

[0026] Reference Figure 3 , 4 As shown, the side-pushing mechanism 45 includes a side-pushing support 451, a side-pushing cylinder 452, and a side-pushing pad 453. The side-pushing support 451 is fixedly installed on the machine base 1, and the side-pushing cylinder 452 is installed on the side-pushing support 451. The side-pushing pad 453 is connected to the output end of the side-pushing cylinder 452. The side-pushing cylinder 452 drives the side-pushing pad 453 to contact the side wall of the pallet bottom plate 31 and push the pallet bottom plate 31 to move.

[0027] Reference Figure 8 , 9 As shown, the X-axis moving mechanism 42 includes an X-axis support base 421, an X-axis cylinder 422, an X-axis guide rail 423, an X-axis slider 424, and an X-axis slide plate 425. The X-axis support base 421 is fixedly mounted on the machine base 1. The X-axis cylinder 422 is mounted on the X-axis support base 421. The X-axis guide rail 423 is disposed on the X-axis support base 421. The X-axis slider 424 is mounted on the X-axis slide plate 425. The X-axis slide plate 425 is connected to the output end of the X-axis cylinder 422. The X-axis slider 424 is disposed on the X-axis guide rail 423 and can slide along the X-axis guide rail 423. The tightening mechanism 43 is disposed on the X-axis slide plate 425.

[0028] Reference Figure 10-12 As shown, the tightening mechanism 43 includes a cylinder 431, a longitudinal slide plate 432, a longitudinal guide rail 433, a longitudinal slider 434, a tightening module 435, and a screw-taking module 436. The cylinder 431 and the longitudinal guide rail 433 are both mounted on the X-axis slide plate 425. The longitudinal slide plate 432 is connected to the output end of the cylinder 431. The longitudinal slider 434 is mounted on the longitudinal slide plate 432 and is disposed on the longitudinal guide rail 433. The longitudinal slider 434 can slide along the longitudinal guide rail 433. The tightening module 435 and the screw-taking module 436 are both mounted on the longitudinal slide plate 432. The screw-taking module 436 is used to pick up screws, and the tightening module 435 is used to tighten screws.

[0029] Reference Figure 10-12 As shown, the screw-picking module 436 includes a slider 4361, a suction nozzle bracket 4362, a suction nozzle 4363, and a spring 4364. The longitudinal slide plate 432 is provided with a longitudinal guide rail 436. The slider 4361 is disposed on the longitudinal guide rail 436 and can slide along the longitudinal guide rail 436. The suction nozzle bracket 4362 is mounted on the slider 4361, and the suction nozzle 4363 is disposed on the suction nozzle bracket 4362. One end of the spring 4364 is connected to the longitudinal slide plate 432, and the other end of the spring 4364 is connected to the suction nozzle bracket 4362. The suction nozzle 4363 is used to pick up screws.

[0030] Reference Figure 10-12As shown, the tightening module 435 includes a second cylinder 4351, a screw gun 4352, a mounting bracket 4353, a second slider 4354, and a screw wrench 4355. The second cylinder 4351 is mounted on a longitudinal sliding plate 432. The mounting bracket 4353 is connected to the output end of the second cylinder 4351. The screw gun 4352 is mounted on the mounting bracket 4353. The second slider 4354 is connected to the mounting bracket 4353. The second slider 4354 is disposed on a second longitudinal guide rail 435 and can slide along the second longitudinal guide rail 435. The screw wrench 4355 is disposed on the screw gun 4352, and the screw gun 4352 drives the screw wrench 4355 to tighten screws. When tightening screws, the suction nozzle 4363 has a through hole 4365 at its center. The cylinder 4351 drives the mounting bracket 4353 to move downwards, thereby moving the screwdriver 4352 and the screw wrench 4355 downwards until the screw wrench 4355 extends out from the lower end of the through hole 4365. After the screw wrench 4355 contacts the screw, the screwdriver 4352 drives the screw wrench 4355 to rotate, thus tightening the screw. When adsorbing screws, the cylinder 4351 drives the mounting bracket 4353 to move upwards, causing the screwdriver 4352 and the screw wrench 4355 to move upwards. The screw wrench 4355 retracts into the through hole 4365, leaving the lower end of the through hole 4365 free for adsorbing screws. The screwdriver 4352 is an ATLAS power tool QMC41, capable of automatically tightening screws.

[0031] Reference Figure 13 , 14 As shown, the pressing mechanism 44 includes a pressing support bracket 441, a pressing drive cylinder 442, a pressing guide rail 443, a pressing slider 444, and a pressing frame 445. The pressing support bracket 441 is fixedly installed on the machine base 1. The pressing drive cylinder 442 and the pressing guide rail 443 are arranged on the pressing support bracket 441. The pressing frame 445 is connected to the output end of the pressing drive cylinder 442. The pressing drive cylinder 442 drives the pressing frame 445 to press the product on the tray 3. The pressing slider 444 is connected to the pressing frame 445. The pressing slider 444 is arranged on the pressing guide rail 443 and can slide against the pressing guide rail 443.

[0032] Reference Figure 13 , 14As shown, the waste collection mechanism 46 includes a cylinder mounting bracket 461, a waste receiving drive cylinder 462, and a waste box 463. The cylinder mounting bracket 461 is fixedly mounted on the pressure support bracket 441. The waste receiving drive cylinder 462 is mounted on the cylinder mounting bracket 461. The waste box 463 is connected to the output end of the waste receiving drive cylinder 462. The waste receiving drive cylinder 462 drives the waste box 463 to below the suction nozzle 4363 to collect unqualified screws.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An automatic screw fastening machine, characterized in that, include: Machine tool; A high-speed chain conveyor with several trays on it, the high-speed chain conveyor driving the several trays to move, and the trays having products to be assembled on them; A screw-driving unit is provided on the machine base, at least one of which is used to drive screws on the products to be assembled on the pallet. The screw-driving units are arranged sequentially along the conveying direction of the double-speed chain conveyor. A lifting and positioning unit is provided at the position of the machine base and the screw-driving unit. The lifting and positioning unit is used to push the pallet to separate the pallet from the double-speed chain conveyor. The screw-driving unit includes a vibrating feeding tray, an X-axis moving mechanism, a tightening mechanism, a pressing mechanism, a side-pushing mechanism, and a waste collection mechanism. The vibrating feeding tray and the X-axis moving mechanism are both mounted on the machine base. The tightening mechanism is mounted on the X-axis moving mechanism. The tightening mechanism is used to pick up the screws from the vibrating feeding tray and transfer them to the products to be assembled on the tray. The tightening mechanism is also used to tighten the screws into the products. The pressing mechanism is used to press the products to be assembled on the tray. The side-pushing mechanism is used to push the tray to the screw assembly position. The waste collection mechanism is used to collect defective screws. The pallet includes a pallet base plate, a product positioning seat, and a product positioning pin. The pallet base plate is placed on the double-speed chain conveyor. The product positioning seat is fixedly mounted on the pallet base plate and is used to position the product. The product positioning pin is mounted on the product positioning seat, and the positioning hole on the product is fitted onto the product positioning pin to achieve product positioning. The lifting and positioning unit includes a fixed bracket, a lifting drive cylinder, a lifting push plate, a side-push positioning column, several top blocks, and a lifting guide column. The fixed bracket is fixedly mounted on the machine base. The lifting drive cylinder is mounted on the fixed bracket. The lifting push plate is connected to the output end of the lifting drive cylinder. The side-push positioning column and several top blocks... The block is set on the upper surface of the lifting push plate. The upper end of the lifting guide column is connected to the lifting push plate. The fixed bracket is provided with a guide sleeve. The lifting guide column passes through the guide sleeve and can slide within the guide sleeve. The lifting drive cylinder drives the top block to move upward and contact the pallet bottom plate to drive the pallet bottom plate to separate from the double-speed chain line. The side push mechanism includes a side push support, a side push cylinder and a side push pad. The side push support is fixedly installed on the machine base. The side push cylinder is installed on the side push support. The side push pad is connected to the output end of the side push cylinder. The side push cylinder drives the side push pad to contact the side wall of the pallet bottom plate and push the pallet bottom plate to move. The pressing mechanism includes a pressing support bracket, a pressing drive cylinder, a pressing guide rail, a pressing slider, and a pressing frame. The pressing support bracket is fixedly installed on the machine base. The pressing drive cylinder and the pressing guide rail are disposed on the pressing support bracket. The pressing frame is connected to the output end of the pressing drive cylinder. The pressing drive cylinder drives the pressing frame to press the product on the tray. The pressing slider is connected to the pressing frame and is disposed on the pressing guide rail. The pressing slider can slide down the pressing guide rail.

2. The automatic screw fastening machine according to claim 1, characterized in that: The X-axis moving mechanism includes an X-axis support base, an X-axis cylinder, an X-axis guide rail, an X-axis slider, and an X-axis sliding plate. The X-axis support base is fixedly mounted on the machine base. The X-axis cylinder is mounted on the X-axis support base. The X-axis guide rail is set on the X-axis support base. The X-axis slider is mounted on the X-axis sliding plate. The X-axis sliding plate is connected to the output end of the X-axis cylinder. The X-axis slider is set on the X-axis guide rail and can slide along the X-axis guide rail. The tightening mechanism is set on the X-axis sliding plate.

3. The automatic screw fastening machine according to claim 2, characterized in that: The tightening mechanism includes a cylinder, a longitudinal slide plate, a longitudinal guide rail, a longitudinal slider, a tightening module, and a screw-taking module. The cylinder and the longitudinal guide rail are both mounted on the X-axis slide plate. The output end of the longitudinal slide plate and the cylinder are connected. The longitudinal slider is mounted on the longitudinal slide plate and is located on the longitudinal guide rail, and the longitudinal slider can slide along the longitudinal guide rail. The tightening module and the screw-taking module are both mounted on the longitudinal slide plate. The screw-taking module is used to pick up the screw, and the tightening module is used to tighten the screw.

4. The automatic screw fastening machine according to claim 3, characterized in that: The screw-picking module includes a slider, a suction nozzle bracket, a suction nozzle, and a spring. A longitudinal guide rail is provided on the longitudinal slide plate, the slider is mounted on the longitudinal guide rail and can slide along the longitudinal guide rail. The suction nozzle bracket is mounted on the slider and the suction nozzle is mounted on the suction nozzle bracket. One end of the spring is connected to the longitudinal slide plate, and the other end of the spring is connected to the suction nozzle bracket. The suction nozzle is used to pick up screws.

5. The automatic screw fastening machine according to claim 4, characterized in that: The tightening module includes a second cylinder, a screw gun, a mounting bracket, a second slider, and a screw wrench. The second cylinder is mounted on a longitudinal slide plate, and the mounting bracket is connected to the output end of the second cylinder. The screw gun is mounted on the mounting bracket, and the second slider is connected to the mounting bracket. The second slider is disposed on a second longitudinal guide rail and can slide along the second longitudinal guide rail. The screw wrench is disposed on the screw gun, and the screw gun drives the screw wrench to tighten the screw.

6. The automatic screw fastening machine according to claim 5, characterized in that: The waste collection mechanism includes a cylinder mounting bracket, a waste receiving drive cylinder, and a waste box. The cylinder mounting bracket is fixedly mounted on a downward support bracket. The waste receiving drive cylinder is mounted on the cylinder mounting bracket. The waste box is connected to the output end of the waste receiving drive cylinder. The waste receiving drive cylinder drives the waste box to below the suction nozzle to collect defective screws.

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