A device for automatic feeding of flange bolts
By using an automatic feeding device and conveyor rollers, combined with servo motors, cylinders, and 3D printing guide devices, the problems of synchronous transfer and missing bolts of flange bolts were solved, achieving efficient and precise bolt assembly and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, the automated supply and precise assembly of flange bolts suffer from difficulties in the synchronous transfer of multiple bolts and the problem of missing bolts, resulting in low production efficiency and abnormal equipment alarms.
By employing an automatic feeding device and conveyor rollers, combined with servo motors, cylinders, and 3D printing guides, the system achieves precise counting, positioning, and efficient synchronous transfer of multiple flange bolts, ensuring accurate bolt assembly.
It improved production efficiency, reduced missing shipments, lowered labor costs, and ensured product quality and stable equipment operation.
Smart Images

Figure CN224390415U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transmission assembly technology, and in particular relates to a device for automatically conveying flange bolts. Background Technology
[0002] In the valve body assembly process of automobiles, machinery, and other fields, the automated supply and precise assembly of flange bolts are critical processes. Traditional assembly methods mainly rely on manual operation or semi-automatic equipment, which has the following significant drawbacks:
[0003] 1. Difficulty in synchronous transfer of multiple bolts: Valve body assembly usually requires the simultaneous insertion of multiple bolts (such as 22 bolts). Existing robotic gripping solutions are difficult to achieve high-precision synchronous positioning, and bolt tilting and falling off are prone to occur.
[0004] 2. Missing bolts issue: During the operation, it is easy to miss bolts when manually placing and installing 22 bolts. This takes 58 seconds, which is time-consuming and affects production efficiency.
[0005] Therefore, there is an urgent need to develop a fully automatic flange bolt supply device with precise counting and limiting, efficient multi-bolt synchronous transfer and adaptive guiding capabilities to improve assembly efficiency and reliability. Summary of the Invention
[0006] This invention aims to solve the problem of missing flange bolts during the conveying process of transmissions. It uses an automatic feeding device and conveyor rollers to assemble flange bolts, ensuring product quality, reducing manual operation, improving efficiency, and reducing costs.
[0007] The technical solution adopted by this utility model is:
[0008] A device for automatically supplying flange bolts includes a front-end conveying mechanism, a transfer mechanism, and a guiding mechanism connected in sequence.
[0009] The transfer mechanism includes a servo motor, a turntable, cylinders two, three, and four, a positioning plate, a conveying pipe seat, and multiple conveying pipes. The turntable is mounted on the output shaft of the servo motor and is horizontally connected to the rear side of the conveying slide. Cylinder two is connected to the servo motor and is used to drive the servo motor and the turntable to move up and down. Cylinder three is connected to cylinder two and is used to drive cylinder two, the servo motor, and the turntable to move back and forth. Multiple conveying pipes are mounted on the positioning plate through the conveying pipe seat and are connected to the middle hole of the positioning plate. Cylinder four is connected to the positioning plate and is used to drive the positioning plate to move back and forth.
[0010] Compared with the prior art, the present invention has the following advantages:
[0011] This invention effectively solves the problem of equipment malfunctions and damage to the housing and tightening head caused by the easy omission of flange bolts during manual installation. It eliminates rework due to missing bolts, improves production cycle time, ensures product quality, reduces manual operation, increases production efficiency, and saves labor costs. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the conveyor slide of this utility model;
[0014] Figure 3 This is a schematic diagram of the turntable and positioning plate of this utility model;
[0015] Figure 4 This is a schematic diagram of the 3D printing guiding device of this utility model;
[0016] Figure 5 This is a schematic diagram of the 3D printing positioning device of this utility model;
[0017] The components include: 1. Feeder; 2. Conveyor slide; 3. Sensor; 4. Cylinder 1; 5. Limiting plate; 6. Servo motor; 7. Cylinder 2; 8. Cylinder 3; 9. Cylinder 4; 10. Positioning plate; 11. Conveyor tube seat; 12. Conveyor tube; 13. 3D printing guide device; 14. Cylinder 5; 15. Lateral movement cylinder; 16. 3D printing positioning device; 17. Turntable; 18. Bolt; 21. Long strip notch; 101. Central hole; 131. Guide hole; 132. Guide cylinder; 161. Positioning hole; 1611. Positioning oblong hole; 1612. Positioning circular hole; 171. Limiting hole; 1711. Limiting oblong hole; 1712. Limiting circular hole. Detailed Implementation
[0018] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.
[0019] like Figure 1 As shown, this utility model provides a device for automatic supply of flange bolts, including a front-end conveying mechanism, a transfer mechanism and a guiding mechanism connected in sequence.
[0020] like Figure 1 , Figure 2As shown, the front-end conveying mechanism includes a feeder 1, a conveying slide 2, a sensor 3, a cylinder 4, and a limiting plate 5; the output end of the feeder 1 is connected to the conveying slide 2, the output end of the conveying slide 2 is provided with a sensor 3, and the limiting plate 5 is located above the conveying end of the conveying slide 2 and fixed on the cylinder 4, and its lifting and lowering are controlled by the cylinder 4.
[0021] Feeder 1 is a vibratory feeder that stores bolts 18 and arranges them in the required orientation by vibration, continuously supplying bolts 18.
[0022] The conveyor chute 2 is used to connect the feeder 1 and the turntable 17 on the servo motor 6, to convey the bolts 18 forward in sequence to the turntable 17, and to store a certain amount of bolts 18 in front for the next use.
[0023] Sensor 3 is used to sense the signal after bolt 18 is in place and transmit the signal to the PLC. It also sends a count to the PLC counter and controls cylinder 4 to open limit plate 5. After a sufficient number of bolts 18 have passed, limit plate 5 is closed.
[0024] Cylinder 4 is used to receive PLC signals and start the telescopic function, thereby controlling the opening and closing of the limit plate 5.
[0025] The limit plate 5 prevents the bolts 18 from accidentally entering the limit hole 171 of the turntable 17 when there are too many bolts 18, thus preventing damage to the equipment.
[0026] like Figure 3 As shown, a long notch 21 is provided in the middle of the conveying slide 2 for overlapping bolts 18.
[0027] like Figure 1 , Figure 3 As shown, the transfer mechanism includes a servo motor 6, a turntable 17, cylinder 2 7, cylinder 3 8, cylinder 4 9, a positioning plate 10, a conveying pipe seat 11, and multiple conveying pipes 12. The turntable 17 is mounted on the output shaft of the servo motor 6 and is horizontally connected to the rear side of the conveying slide 2. Cylinder 2 7 is connected to the servo motor 6 and is used to drive the servo motor 6 and the turntable 17 to move up and down. Cylinder 3 8 is connected to cylinder 2 7 and is used to drive cylinder 2 7, the servo motor 6, and the turntable 17 to move back and forth. Multiple conveying pipes 12 are mounted on the positioning plate 10 through the conveying pipe seat 11 and are connected to the middle hole 101 of the positioning plate 10. Cylinder 4 9 is connected to the positioning plate 10 and is used to drive the positioning plate 10 to move back and forth.
[0028] A ring of limiting holes 171 is provided on the outer edge of the turntable 17, and the limiting holes 171 are composed of a limiting elongated hole 1711 and a limiting circular hole 1712. The diameter of the limiting elongated hole 1711 is smaller than the head diameter of the bolt 18, which can support the bolt 18 that falls from the conveying slide 2. The diameter of the limiting circular hole 1712 is larger than the head diameter of the bolt 18, so that when the positioning plate 10 moves horizontally, it drives the bolt 18 inserted into the middle hole 101 to move from the limiting elongated hole 1711 to the limiting circular hole 1712, and then it can fall.
[0029] Multiple limiting elongated holes 1711 are arranged in a circumferential array, and corresponding limiting circular holes 1712 are arranged on the rear side of the limiting elongated holes 1711.
[0030] The servo motor 6 precisely controls the turntable 17 to cooperate with the conveyor slide 2 at a certain position and angle to remove 22 bolts 18.
[0031] Cylinder 2 7 is used to lift or lower the servo motor 6 and the turntable 17, and its purpose is to move the 22 bolts 18 in the upper limit hole 171 of the turntable 17.
[0032] Cylinder 3, 8, is used to move the servo motor 6 and turntable 17 to the position of the positioning plate 10 in parallel.
[0033] Cylinder 49 is used to slide the 22 bolts 18, which are fixed in position, from the turntable 17 into the connected delivery pipe 12 on the positioning plate 10, so that the bolts 18 can slide down smoothly.
[0034] The positioning plate 10 is used to connect 22 conveying pipes 12 and serves to position and guide them.
[0035] The conveying pipe seat 11 is used to connect the conveying pipe 12 to the conveying bolt 18.
[0036] The delivery pipe 12 supplies bolts 18 to the 3D printing guide device 13 for tightening the pre-assembled equipment.
[0037] like Figure 1 , Figure 4 , Figure 5 As shown, the guiding mechanism includes a 3D printing guiding device 13, a cylinder 14, a transverse cylinder 15, and a 3D printing positioning device 16. The 3D printing guiding device 13 is supported by the cylinder 14. The 3D printing guiding device 13 has multiple guide holes 131, and the multiple guide holes 131 are connected to multiple delivery pipes 12 in a one-to-one correspondence. The 3D printing positioning device 16 is located below the 3D printing guiding device 13 and is mounted on the transverse cylinder 15. It is driven to move horizontally by the transverse cylinder 15. The 3D printing positioning device 16 has multiple positioning holes 161, and the multiple positioning holes 161 are connected to the multiple guide holes 131 in a one-to-one correspondence.
[0038] like Figure 4 As shown, the 3D printing guide device 13 is a plate-shaped structure with multiple guide holes 131 on it, and guide cylinders 132 are provided on the guide holes 131 to facilitate connection with the delivery pipe 12.
[0039] like Figure 5 As shown, the 3D printing positioning device 16 is a plate-shaped structure with multiple positioning holes 161. Each positioning hole 161 consists of an elongated positioning hole 1611 and a circular positioning hole 1612. The diameter of the elongated positioning hole 1611 is smaller than the head of the bolt 18, which can support the bolt 18 that falls from the 3D printing guide device 13. The diameter of the circular positioning hole 1612 is larger than the head of the bolt 18, so that when the 3D printing guide device 13 moves, the bolt 18 can fall when it moves from the elongated positioning hole 1611 to the circular positioning hole 1612.
[0040] The 3D-printed guide device 13 is used to precisely reposition the bolts 18 delivered from the delivery pipe 12, so that each bolt 18 can be aligned with the bolt hole 18 on the valve body.
[0041] Cylinder 514 is used to fix and support the feeding 3D printing guide device 13, and extends into the valve body pinhole to wait for the equipment to automatically tighten.
[0042] The transverse cylinder 15 is connected to the 3D printing positioning device 16 so that it can move left and right. The purpose is to retract the 3D printing positioning device 16 that has been sent into the nail hole of the valve body.
[0043] The 3D printing positioning device 16 is used to smoothly and accurately lower the 22 bolts 18 in the 3D printing special guide device into the valve body.
[0044] Work process:
[0045] After the valve body is assembled, the bolt 18 is placed into the feeder 1 and enters the conveying slide 2 through the vibration of the feeder 1. The bolt 18 overlaps the long slot 21 of the conveying slide 2 and slides along it. When the bolt 18 passes through, the sensor 3 senses the bolt 18 and triggers the PLC to send a signal to the solenoid valve, so that the cylinder 4 opens and starts counting (22 times). The cylinder 4 is closed, and at the same time the PLC drives the servo motor 6 to drive the turntable 17 to rotate to the corresponding position to receive the bolt 18 falling from the long slot 21. After the servo motor 6 rotates once, the limiting hole 171 on the turntable 17 is filled with bolts 18. Then, the PLC triggers cylinder 2 7 to lift it. After reaching the position, cylinder 3 8 is triggered to pull it back, moving the turntable 17 to the upper end of the positioning plate 10. At this time, the bolts 18 correspond one-to-one with the middle hole 101 of the positioning plate 10 below. After cylinder 3 8 extends and retracts to the position, cylinder 2 7 extends, allowing the bolts 18 to be inserted into the corresponding middle hole 101. Then, cylinder 4 9 is activated, and the positioning plate 10 is moved horizontally, causing the bolts 18 inside to move. The bolts 18 fall from the turntable 17 into the corresponding middle hole 101 of the positioning plate 10 and slide down along the 22 conveying pipes 12 onto the 3D printing guide device 13. All the above actions return to the origin to wait for the next work. Then, it falls onto the 3D printing positioning device 16, and the cylinder 14 moves the 3D printing positioning device 16 down into the valve body bolt hole. Then, the transverse cylinder 15 drives the 3D printing positioning device 16 to move horizontally, so that the bolt 18 falls from the positioning hole 161 into the valve body bolt hole for the tightening machine to tighten. Then, the 3D printing positioning device 16 is withdrawn and returns to its original position, completing one work cycle. After the turntable 17 on the production line is triggered again, the next work cycle begins.
[0046] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A device for automatically supplying flange bolts, characterized in that: This includes a front-end conveying mechanism, a transfer mechanism, and a guiding mechanism that are connected in sequence. The transfer mechanism includes a servo motor (6), a turntable (17), cylinder two (7), cylinder three (8), cylinder four (9), a positioning plate (10), a conveying pipe seat (11), and multiple conveying pipes (12). The turntable (17) is mounted on the output shaft of the servo motor (6) and is horizontally connected to the rear side of the conveying slide (2). Cylinder two (7) is connected to the servo motor (6) and is used to drive the servo motor (6) and the turntable (17) to move up and down. Cylinder three (8) is connected to cylinder two (7) and is used to drive cylinder two (7), the servo motor (6), and the turntable (17) to move back and forth. Multiple conveying pipes (12) are mounted on the positioning plate (10) through the conveying pipe seat (11) and are connected to the middle hole (101) of the positioning plate (10). Cylinder four (9) is connected to the positioning plate (10) and is used to drive the positioning plate (10) to move back and forth.
2. The device for automatic supply of flange bolts according to claim 1, characterized in that: The turntable (17) has a ring of limiting holes (171) on its outer edge. The limiting holes (171) are composed of a limiting elongated hole (1711) and a limiting circular hole (1712). The diameter of the limiting elongated hole (1711) is smaller than the head diameter of the bolt (18) so that it can support the bolt (18) that falls from the conveying slide (2). The diameter of the limiting circular hole (1712) is larger than the head diameter of the bolt (18) so that when the positioning plate (10) moves, it drives the bolt (18) inserted into the middle hole (101) to move from the limiting elongated hole (1711) to the limiting circular hole (1712) and then fall.
3. The device for automatic supply of flange bolts according to claim 1, characterized in that: The guiding mechanism includes a 3D printing guiding device (13), a cylinder five (14), a transverse cylinder (15), and a 3D printing positioning device (16). The 3D printing guiding device (13) is supported by the cylinder five (14). Multiple guide holes (131) are opened on the 3D printing guiding device (13), and the multiple guide holes (131) are connected to multiple delivery pipes (12) one by one. The 3D printing positioning device (16) is set below the 3D printing guiding device (13) and installed on the transverse cylinder (15). It is driven to move horizontally by the transverse cylinder (15). Multiple positioning holes (161) are opened on the 3D printing positioning device (16), and the multiple positioning holes (161) are connected to the multiple guide holes (131) one by one.
4. The device for automatic supply of flange bolts according to claim 3, characterized in that: A guide cylinder (132) is provided on the guide hole (131).
5. The device for automatic supply of flange bolts according to claim 3, characterized in that: Each of the positioning holes (161) consists of a positioning elongated hole (1611) and a positioning circular hole (1612). The diameter of the positioning elongated hole (1611) is smaller than that of the head of the bolt (18) so that it can support the bolt (18) that falls off by the 3D printing guide device (13). The diameter of the positioning circular hole (1612) is larger than that of the head of the bolt (18) so that when the 3D printing guide device (13) moves, the bolt (18) can fall when it moves from the positioning elongated hole (1611) to the positioning circular hole (1612).
6. The device for automatic supply of flange bolts according to claim 1, characterized in that: The front-end conveying mechanism includes a feeder (1), a conveying slide (2), a sensor (3), a cylinder (4), and a limiting plate (5); the output end of the feeder (1) is connected to the conveying slide (2), the output end of the conveying slide (2) is provided with a sensor (3), and the limiting plate (5) is located above the conveying end of the conveying slide (2) and fixed on the cylinder (4), and its lifting and lowering are controlled by the cylinder (4).
7. The device for automatic supply of flange bolts according to claim 6, characterized in that: The conveying slide (2) has a long notch (21) in the middle for connecting bolts (18).