A conveying mechanism for screw tightening

Abstract

This application relates to a conveying mechanism for screw tightening, belonging to the field of automated processing technology. It includes: a frame supporting the conveying mechanism; a screw tightener mounted on the frame for loading and tightening bolts; a conveying assembly mounted on the frame for conveying the equipment; and a positioning assembly mounted on the frame for positioning the equipment. This application eliminates the need for manual installation and disassembly of each piece of equipment, improving the tightening and unloading efficiency of screws.

Description

Technical Field

[0001] This application relates to the field of automated processing technology, and in particular to a conveying mechanism for screw tightening. Background Technology

[0002] Currently, screw tightening machines are industrial devices used for automated or semi-automated screw tightening. They consist of a power source (electric, pneumatic, or hydraulic), a control system, a tightening head, and sensors. By precisely controlling torque, angle, and speed, they ensure the quality of screw tightening and are widely used in automotive manufacturing, electronic assembly, and home appliance production. Types include handheld, stationary, and robotic integrated models. They offer advantages such as high efficiency (3-5 times faster than manual tightening), high precision (pass rate exceeding 99.9%), and data traceability. They support intelligent compensation, error-proofing detection, and IoT connectivity, and are suitable for various screw sizes (e.g., M2-M30) and stringent production standards (e.g., ISO 5393). They are key equipment for improving assembly efficiency and reliability.

[0003] A Chinese patent with publication number CN103447813B discloses an automatic screw and nut tightening machine, including a screw conveying device, a nut conveying device, a screw tightening device, a positioning device for automatic assembly of screws and nuts, and a circuit control system. The screw conveying device includes a storage cylinder and a conveying guide rail, and the nut conveying device includes a storage cylinder and a conveying guide rail. The screw tightening device is set above the positioning device. The screw tightening device and the positioning device are respectively connected to the programmable control circuit through wiring. An automatic discharge channel for the assembly is set at the bottom of the positioning device.

[0004] In related technologies, the equipment to be processed is fixed on a frame, and screws are fed to the screw tightening mechanism via a vibratory feeder. The screw tightening mechanism then tightens the screws onto the equipment, and the equipment is removed from the frame after the screws are tightened.

[0005] Regarding the aforementioned technologies, the inventors believe that the need to position the equipment each time screws are tightened, and the repeated installation and disassembly of the equipment, reduce the efficiency of screw tightening. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a conveying mechanism for screw tightening, which solves the technical problem that the equipment needs to be positioned every time it is tightened and that the screw tightening efficiency is reduced every time the equipment is installed and disassembled.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A conveying mechanism for screw tightening includes: a frame for supporting the conveying mechanism; a screw tightener mounted on the frame for feeding and tightening bolts; a conveying assembly mounted on the frame for conveying the equipment; and a positioning assembly mounted on the frame for positioning the equipment.

[0009] Furthermore, the conveying assembly includes a conveyor frame that passes under the screw tightener. The conveyor frame is equipped with a drive roller and a driven roller, and a conveyor belt is fitted onto the drive roller and the driven roller. The conveyor frame is equipped with a drive motor, and the output shaft of the drive motor is connected to the drive roller.

[0010] Furthermore, the positioning component includes a positioning frame located on both sides of the conveyor frame. The positioning frame is provided with a first positioning cylinder and a positioning plate. The first positioning cylinder is horizontally mounted on the positioning frame, and the piston rod of the first positioning cylinder faces the side closer to the conveyor frame. The positioning plate is mounted on the piston rod of the first positioning cylinder.

[0011] Furthermore, the positioning plate is provided with a guide rod, one end of which is connected to the positioning plate and the other end passes through the positioning frame, and the guide rod slides in cooperation with the positioning frame.

[0012] Furthermore, a first base plate and a second base plate are provided on one side of the frame located on the conveyor frame. The first base plate is mounted on the frame, and the second base plate is arranged parallel to and spaced apart from the first base plate. A lifting cylinder is mounted on the first base plate, and one end of the piston rod of the lifting cylinder passes through the first base plate and is connected to the second base plate.

[0013] Furthermore, a positioning seat is installed on the side of the frame near the first base plate, a positioning block is rotatably mounted on the positioning seat, and a second positioning cylinder is installed on the positioning seat, with one end of the piston rod of the second positioning cylinder abutting against the positioning block.

[0014] Furthermore, a positioning sensor is provided on the side of the frame near the first substrate, and a positioning switch is provided on the positioning sensor. The positioning switch is rotatably mounted on the positioning sensor, and a positioning contact is provided on the positioning sensor. One end of the positioning contact is pressed against the positioning switch.

[0015] In summary, this application includes at least one of the following beneficial technical effects of a conveying mechanism for screw tightening:

[0016] 1. When in use, place the equipment to be operated on the conveying assembly of the frame. After the equipment moves under the screw tightener, the positioning assembly positions the equipment, and then the screw tightener tightens the screw. After the screw is tightened on the equipment, the conveying assembly outputs the equipment from the bottom of the screw tightener, thus eliminating the need for manual installation and disassembly of each piece of equipment and improving the screw tightening and unloading efficiency.

[0017] 2. The first positioning cylinder and positioning plate on the positioning frame, as well as the positioning block and second positioning cylinder on the positioning seat, improve the stability of the equipment when tightening screws.

[0018] 3. By using positioning sensors and lifting cylinders to connect with the first and second base plates, the ease of conveying the equipment on the conveyor belt is improved. Attached Figure Description

[0019] Figure 1 This application mainly provides a schematic diagram of the overall structure of a conveying mechanism for screw tightening;

[0020] Figure 2 This is a schematic diagram of the main conveyor structure provided in this application;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the first substrate and the second substrate, which are the main components of this application;

[0022] Figure 4 This is a schematic diagram of the positioning seat structure mainly provided in this application;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the positioning sensor that is the main feature of this application.

[0024] Reference numerals: 1. Frame; 11. Screw tightener; 2. Conveying assembly; 21. Conveying frame; 22. Driving roller; 23. Driven roller; 24. Conveyor belt; 25. Drive motor; 3. Positioning assembly; 31. Positioning frame; 32. First positioning cylinder; 33. Positioning plate; 34. Guide rod; 4. First base plate; 41. Second base plate; 42. Lifting cylinder; 5. Positioning sensor; 51. Positioning switch; 52. Positioning contact; 53. Support spring; 6. Positioning seat; 61. Positioning block; 62. Second positioning cylinder. Detailed Implementation

[0025] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] This application discloses a conveying mechanism for screw tightening.

[0028] Reference Figure 1 A conveying mechanism for screw tightening includes a frame 1, on which a screw tightener 11 is mounted. The screw tightener 11 conveys screws to the frame 1 and tightens them onto the workpiece. The frame 1 is equipped with a conveying assembly 2 and a positioning assembly 3. The conveying assembly 2 conveys the workpiece below the screw tightener 11, the positioning assembly 3 positions the workpiece, and then the screw tightener 11 tightens the screws onto the workpiece.

[0029] Reference Figure 2 The conveying assembly 2 includes a conveyor frame 21, with two sets of conveyor frames 21 spaced apart on the frame 1, arranged in parallel. In use, the equipment is placed on the conveyor frames 21 on both sides. To improve the ease of transporting the equipment on the conveyor frames 21, a drive roller 22 and a driven roller 23 are rotatably mounted on the conveyor frame 21. A conveyor belt 24 is fitted onto the drive roller 22 and the driven roller 23. Furthermore, a drive motor 25 is mounted on the conveyor frame 21, and the output shaft of the drive motor 25 is connected to the drive roller 22. In use, the drive motor 25 drives the drive roller 22 to rotate. As the drive roller 22 rotates, the conveyor belt 24 rotates on the conveyor frame 21. When the equipment is placed on the conveyor frame 21, the bottom of the equipment rubs against the conveyor belt 24, thus enabling the equipment to be transported on the conveyor frame 21.

[0030] To improve the stability of the equipment on the conveyor frame 21 when the screw tightener 11 is operating, a positioning component 3 is provided on each side of the two sets of conveyor frames 21, and the two sets of positioning components 3 are arranged opposite each other. Since the structure and function of the two sets of positioning components 3 are the same, only one set of positioning components 3 will be described below.

[0031] The positioning assembly 3 includes a positioning frame 31, which is mounted on the frame 1. A first positioning cylinder 32 is mounted on the positioning frame 31. The first positioning cylinder 32 is horizontally mounted on the positioning frame 31, with its piston rod facing towards the side closest to the conveyor frame 21. One end of the piston rod passes through the positioning frame 31. A positioning plate 33 is mounted on the end of the piston rod that passes through the positioning frame 31. The positioning plate 33 is rectangular in shape and horizontally positioned along its length. When the equipment moves between the two positioning plates 33, the first positioning cylinder 32 drives the positioning plate 33 to press against the equipment.

[0032] To improve the stability of the positioning plate 33 against the equipment, guide rods 34 are provided on the positioning plate 33. Two sets of guide rods 34 are provided on each side of the positioning plate 33 along its length. One end of each set of guide rods 34 is connected to the positioning plate 33, and the other end passes through the positioning frame 31. The guide rods 34 and the positioning frame 31 are slidably engaged. During use, the guide rods 34 guide the positioning plate 33, thereby improving the stability of the positioning plate 33 against the equipment.

[0033] Reference Figure 3 During the tightening of screws, in order to allow other equipment to be transported on the conveyor frame 21, a first base plate 4 and a second base plate 41 are arranged between the two sets of conveyor frames 21, with the first base plate 4 and the second base plate 41 arranged parallel and spaced apart. The first base plate 4 is mounted on the frame 1, and the second base plate 41 is located above the first base plate 4. A lifting cylinder 42 is provided on one side of the first base plate 4, and the lifting cylinder 42 is mounted on the first base plate 4, with one end of the piston rod of the lifting cylinder 42 passing through the first base plate 4 and connecting to the second base plate 41.

[0034] In use, the device moves under the drive of the conveyor belt 24 to the lower position of the screw tightener 11. Then, the lifting cylinder 42 drives the second base plate 41 to lift the device. Afterward, the first positioning cylinder 32 drives the positioning plate 33 to press against the device. Because the device is lifted, subsequent devices can be transported on the conveyor frame 21. After the screws on the device are tightened, the second base plate 41 is placed back onto the conveyor frame 21 under the action of the lifting cylinder 42. Then, the device is transported away from the screw tightener 11 by the conveyor belt 24. At the same time, subsequent devices move back above the second base plate 41, and the second base plate 41 lifts the device again.

[0035] Reference Figure 4During the conveying process, in order to ensure that the lifting cylinder 42 can accurately lift the equipment, a positioning sensor 5 is installed on one side of the conveyor frame 21. A positioning switch 51 is rotatably mounted on the positioning sensor 5. Furthermore, a positioning contact 52 is provided on the positioning sensor 5. One end of the positioning contact 52 is connected to the positioning sensor 5, and the other end is pressed against the positioning switch 51. A support spring 53 is provided between the positioning contact 52 and the positioning sensor 5, pressing against the positioning contact 52 and the positioning sensor 5. When the equipment moves to the side of the positioning sensor 5 under the conveyor frame 21, and as the equipment is driven by the conveyor belt 24, the equipment is pressed against the positioning switch 51, causing the positioning switch 51 to rotate towards the side closer to the positioning contact 52. The positioning switch 51 presses the positioning contact 52 into the positioning sensor 5. At this time, the support spring 53 is in a compressed state. Furthermore, when the equipment is separated from the positioning switch 51 under the drive of the conveyor belt 24, the positioning switch 51 loses the pressure of the equipment, and the positioning contact 52 lifts the positioning switch 51 under the action of the support spring 53. At this time, the lifting cylinder 42 lifts the equipment through the second base plate 41.

[0036] Reference Figure 5 To further improve the stability of the equipment operating on the second substrate 41, a positioning seat 6 is provided between the two conveyor frames 21 in the frame 1. A positioning block 61 is provided on the positioning seat 6, and the positioning block 61 is rotatably mounted on the positioning seat 6. Furthermore, a second positioning cylinder 62 is installed on the frame 1. One end of the piston rod of the second positioning cylinder 62 passes through the positioning seat 6 and abuts against the positioning block 61. In use, one end of the piston rod of the second positioning cylinder 62 abuts against the positioning block 61, causing the positioning block 61 to rotate towards the side closer to the equipment. The positioning block 61 abuts against the equipment. Through the positioning of the positioning block 61, the displacement of the equipment during the processing can be reduced.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A conveying mechanism for screw tightening, characterized in that, include: A frame (1) is provided for supporting the conveying mechanism; Screw tightener (11), the screw tightener (11) is installed on the frame (1), the screw tightener (11) is used to complete the feeding and tightening of bolts; A conveying assembly (2) is mounted on the frame (1) and is used to convey the equipment. Positioning component (3) is mounted on the frame (1) and is used to position the equipment.

2. The conveying mechanism for screw tightening according to claim 1, characterized in that, The conveying assembly (2) includes a conveying frame (21) that passes under the screw tightener (11). The conveying frame (21) is provided with a drive roller (22) and a driven roller (23). A conveyor belt (24) is fitted on the drive roller (22) and the driven roller (23). The conveying frame (21) is provided with a drive motor (25), and the output shaft of the drive motor (25) is connected to the drive roller (22).

3. The conveying mechanism for screw tightening according to claim 2, characterized in that, The positioning component (3) includes a positioning frame (31) located on both sides of the conveyor frame (21). A first positioning cylinder (32) and a positioning plate (33) are provided on the positioning frame (31). The first positioning cylinder (32) is horizontally mounted on the positioning frame (31). The piston rod of the first positioning cylinder (32) faces the side closer to the conveyor frame (21). The positioning plate (33) is mounted on the piston rod of the first positioning cylinder (32).

4. A conveying mechanism for screw tightening according to claim 3, characterized in that, The positioning plate (33) is provided with a guide rod (34), one end of which is connected to the positioning plate (33) and the other end passes through the positioning frame (31). The guide rod (34) and the positioning frame (31) slide together.

5. A conveying mechanism for screw tightening according to claim 2, characterized in that, The frame (1) is provided with a first base plate (4) and a second base plate (41) on one side of the conveyor frame (21). The first base plate (4) is mounted on the frame (1), and the second base plate (41) is arranged parallel to and spaced apart from the first base plate (4). A lifting cylinder (42) is mounted on the first base plate (4), and one end of the piston rod of the lifting cylinder (42) passes through the first base plate (4) and is connected to the second base plate.

6. A conveying mechanism for screw tightening according to claim 5, characterized in that, A positioning seat (6) is installed on the side of the frame (1) near the first base plate (4). A positioning block (61) is rotatably installed on the positioning seat (6). A second positioning cylinder (62) is installed on the positioning seat (6). One end of the piston rod of the second positioning cylinder (62) abuts against the positioning block (61).

7. A conveying mechanism for screw tightening according to claim 5, characterized in that, A positioning sensor (5) is provided on the side of the frame (1) near the first substrate (4). A positioning switch (51) is provided on the positioning sensor (5). The positioning switch (51) is rotatably mounted on the positioning sensor (5). A positioning contact (52) is provided on the positioning sensor (5). One end of the positioning contact (52) abuts against the positioning switch (51).

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