Automatic bolt production line

Abstract

The present invention relates to an automated bolt production line, comprising a frame and a chamfering machine, a rod shrinking machine, a thread rolling device, a forming device and a heat treatment device arranged in sequence, the frame is provided with a conveying device, the conveying device comprises a first conveying mechanism and a second conveying mechanism arranged at both ends of the frame and in opposite conveying directions, the first conveying mechanism and the second conveying mechanism are arranged in parallel, the chamfering machine, the rod shrinking machine and the thread rolling device are arranged on one side of the first conveying mechanism, the first conveying mechanism is provided with a plurality of first transfer racks, the second conveying mechanism is provided with a plurality of second transfer racks, a bidirectional pushing mechanism is provided on the top of the frame, the chamfering machine, the rod shrinking machine and the thread rolling device are respectively facing a bidirectional pushing mechanism, and a U-turn transfer mechanism is provided on one end of the frame close to the thread rolling device. The automated bolt production line of the present invention can realize the U-turn of steel bars and improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bolt production equipment, and in particular to an automated bolt production line. Background Art

[0002] The traditional U-bolt production method is more of an operator-assisted production: the operator team first uses tools to straighten and cut the round steel, then puts it in the turnover area, and then transfers it to the next process. The next operator performs thread rolling on the semi-finished product, and then transfers it to the next process for stamping. The entire production process has many production processes, and the semi-finished product logistics runs many times. U-bolts need to be chamfered, reduced, and rolled during production. The semi-finished product of the U-bolt is a straight rod, and both ends of the straight rod need to be processed by the above processes. The equipment for these processes can only process one end of the semi-finished product, so when processing U-bolts, the straight rod needs to be turned many times so that both ends enter the equipment in turn. This process requires manual operation, which reduces production efficiency. Summary of the invention

[0003] In order to overcome the technical defects of the prior art, the present invention provides an automated bolt production line, which can realize the turning of steel bars and improve production efficiency.

[0004] The technical solution adopted by the present invention is: an automated bolt production line, including a frame and a chamfering machine, a rod shrinking machine, a thread rolling device, a forming device and a heat treatment device arranged in sequence, the frame is provided with a conveying device, the conveying device includes a first conveying mechanism and a second conveying mechanism arranged at both ends of the frame and in opposite conveying directions, the first conveying mechanism and the second conveying mechanism are arranged in parallel, the chamfering machine, the rod shrinking machine and the thread rolling device are arranged on one side of the first conveying mechanism, the first conveying mechanism is provided with a plurality of first transfer racks, the second conveying mechanism is provided with a plurality of second transfer racks, the top of the frame is provided with a bidirectional pushing mechanism, the chamfering machine, the rod shrinking machine and the thread rolling device are respectively opposite to a bidirectional pushing mechanism, and a U-turn transfer mechanism is provided at one end of the frame close to the thread rolling device;

[0005] The pushing mechanism comprises a sliding guide rod arranged at the top of the frame and a pushing driving mechanism mounted above the sliding guide rod, the pushing driving mechanism comprises a mounting frame, a slide slidably matched at the lower end of the mounting frame, and a first driving mechanism mounted on the mounting frame to drive the slide to move, the mounting frame is arranged just above the sliding guide rod, a rotating matching assembly and a clamping assembly are mounted at the lower end of the slide, the rotating matching assembly and the clamping assembly are arranged along the length direction of the sliding guide rod, a sliding groove is arranged at the top of the sliding guide rod, a roller conveying mechanism is arranged at the bottom of the sliding groove, and a conveying direction of the roller conveying mechanism is parallel to a moving direction of the slide;

[0006] The first transfer frame includes a first mounting plate, a first supporting plate, a first column and a first buffer spring. The first mounting plate is transmission-connected to the first conveying mechanism. The first column is fixedly connected to the first mounting plate. The lower end of the first supporting plate is fixedly connected to the first mounting plate through a plurality of first buffer springs. The end of the upper end of the first supporting plate away from the thread rolling device is connected to the upper end of the first column through the first buffer spring.

[0007] Preferably, the rotating cooperation component includes a first lifting drive cylinder and a wheel frame, the cylinder body of the first lifting drive cylinder is fixed on the slide frame and its piston rod is arranged downward, the end of the piston rod of the first lifting drive cylinder is installed with a wheel frame, and a plurality of rollers are rotatably installed on the wheel frame, the axes of the plurality of rollers are parallel to the axis of the sliding guide rod, and the axes of the plurality of rollers are on the same circumference.

[0008] Preferably, the clamping assembly includes a second lifting drive cylinder and a pressing block, the cylinder body of the second lifting drive cylinder is fixed on the slide and its piston rod is arranged downward, and the pressing block is fixedly connected to the end of the piston rod of the second lifting drive cylinder.

[0009] Preferably, a mounting groove is provided at the bottom of the sliding groove, and the roller conveying mechanism includes a mounting seat arranged in the mounting groove and a plurality of rotating shafts rotatably mounted on the mounting seat, each of the rotating shafts is sleeved and fixedly connected with a rubber roller sleeve, and the plurality of rotating shafts are divided into two rows, the two rows of rotating shafts are inclined and symmetrically arranged in a V shape, and the low ends of the two rows of rotating shafts are staggered, and the mounting seat is connected to the frame through a compression spring.

[0010] Preferably, the mounting base comprises two separately arranged frames, each frame is provided with a row of rotating shafts, and each frame is connected to the frame via a compression spring.

[0011] Preferably, both ends of the sliding guide rod are provided with straight segments, the height of the top end surface of the straight segment is lower than the height of the top end surface of the sliding guide rod, and both ends of the roller conveying mechanism extend to the straight segments respectively.

[0012] Preferably, a supporting groove is provided at the top end of the first supporting plate, and a trumpet-shaped guide groove is provided on the side of the first supporting plate facing the pushing mechanism, and the trumpet-shaped guide groove is connected to the supporting groove and is coaxially arranged with the supporting groove.

[0013] Preferably, the U-turn and transfer mechanism includes a rotating motor, a connecting frame, a finger cylinder and a guide device. The rotating motor is fixedly connected to the frame, and the output end of the rotating motor is arranged upward. The connecting frame is transmission-connected to the output end of the rotating motor. The cylinder body of the finger cylinder is installed at the end of the connecting frame. The two clamping arms of the finger cylinder are provided with clamping plates with arc-shaped cross-sections. The guide device includes a fan-shaped guide plate. The two radii of the fan-shaped guide plate are connected to the frame. The connecting frame moves on the fan-shaped guide plate under the drive of the rotating motor. The top surface of the fan-shaped guide plate is provided with a plurality of rollers, and the plurality of rollers are arranged in a fan shape.

[0014] Preferably, the forming device includes a high-frequency heating device and a bending mechanism which are arranged in sequence, and the bending mechanism includes a machine platform, a hydraulic tooling and a top block. The top block and the hydraulic tooling are both fixed on the top of the machine platform, the piston end of the hydraulic tooling is arranged opposite to the top block, and two push blocks are provided at the end of the piston rod of the hydraulic tooling.

[0015] The beneficial effects of the present invention are as follows: the conveying device of the automated bolt production line of the present embodiment is suitable for transferring semi-finished products of U-shaped screws. During the production process, the steel bar raw material is placed on the first transfer rack, and the first conveying mechanism drives the first transfer rack to align with the feed ports of the chamfering machine, the rod shrinking machine, and the thread rolling device in turn. The pushing mechanism pushes the steel bar raw material into the processing equipment. After the processing is completed, the pushing mechanism pulls the semi-finished product back to the first transfer rack, and the first conveying rack transfers the transfer rack and the semi-finished product to the next equipment. When the second end of the steel bar needs to be processed, the U-turn transfer mechanism turns the steel bar with one end processed one hundred and eighty degrees and transfers it to the second transfer rack on the second conveying mechanism. The first conveying mechanism drives the second transfer rack to move in the direction of the chamfering device. After the steel bar is aligned with the chamfering device, the pushing device on the frame aligned with the chamfering device transfers the steel bar to the first transfer rack on the first conveying mechanism. The first transfer mechanism can process the unprocessed second end of the steel bar, and the second end of the steel bar is processed in sequence by the three devices. When the automated bolt production line of the present invention is in operation, the steel bar can be turned around, which avoids complicated manual operations and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the automated bolt production line of the present invention.

[0017] Figure 2 The usage status of the push mechanism of the present invention is referenced Figure 1 .

[0018] Figure 3 The first transfer rack of the present invention is used in the push mechanism reference state Figure 1 The structural view of the time.

[0019] Figure 4The usage status of the push mechanism of the present invention is referenced Figure 2 .

[0020] Figure 5 The first transfer rack of the present invention is used in the push mechanism reference state Figure 1 The structural view of the time.

[0021] Figure 6 It is a cross-sectional view of the pushing mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the assembly of the splint of the present invention.

[0023] Description of reference numerals: 1, frame; 101, first conveying mechanism; 1011, first transfer frame; 10111, first mounting plate; 10112, first supporting plate; 10113, first column; 10114, first buffer spring; 10115, trumpet-shaped guide groove; 102, second conveying mechanism; 1021, second transfer frame;

[0024] 103, pushing mechanism; 1031, sliding guide rod; 1032, mounting frame; 10321, slide rail; 1033, slide frame; 10341, first lifting drive cylinder; 10342, wheel frame; 10343, roller; 10351, second lifting drive cylinder; 10352, pressing block; 1036, roller conveying mechanism; 103611, frame; 10362, rotating shaft; 10363, compression spring; 1037, mounting groove; 1038, sliding groove; 1039, straight segment;

[0025] 104, U-turn transfer mechanism; 1041, rotating motor; 1042, connecting frame; 1043, finger cylinder; 1044, fan-shaped guide plate; 1045, clamping plate;

[0026] 2. Chamfering machine; 3. Rod shrinking machine; 4. Thread rolling device;

[0027] 5. Forming device; 501. High-frequency heating device; 502. Bending mechanism; 5021. Machine platform; 5022. Hydraulic tooling; 5023. Ejector block; 5024. Pusher block. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] like Figures 1 to 7As shown, this embodiment provides an automated bolt production line, which includes a frame 1 and a chamfering machine 2, a rod shrinking machine 3, a thread rolling device 4, a forming device 5 and a heat treatment device arranged in sequence. The frame 1 is provided with a conveying device, and the conveying device includes a first conveying mechanism 101 and a second conveying mechanism 102 which are arranged at both ends of the frame 1 and have opposite conveying directions. The first conveying mechanism 101 and the second conveying mechanism 102 are arranged in parallel, and the chamfering machine 2, the rod shrinking machine 3 and the thread rolling device 4 are arranged on one side of the first conveying mechanism 101. The first conveying mechanism 101 is provided with a plurality of A transfer rack 1011, a plurality of second transfer racks 1021 are arranged on the second conveying mechanism 102, a bidirectional pushing mechanism 103 is arranged on the top of the frame 1, the chamfering machine 2, the rod shrinking machine 3 and the thread rolling device 4 are respectively facing a bidirectional pushing mechanism 103, and a turning transfer mechanism 104 is arranged on the end of the frame 1 close to the thread rolling device 4. When the automated bolt production line of this embodiment is in operation, the steel bars to be processed are placed on the first conveying mechanism 101, and the first conveying mechanism 101 transfers the steel bars to each processing position in turn, and finally the steel bars are turned around by the turning transfer mechanism 104.

[0030] In this embodiment, the pushing mechanism 103 includes a sliding guide rod 1031 arranged on the top of the frame 1 and a pushing drive mechanism mounted above the sliding guide rod 1031, the pushing drive mechanism includes a mounting frame 1032, a slide 1033 slidingly matched on the mounting frame 1032, and a first driving mechanism mounted on the mounting frame 1032 to drive the slide 1033 to move, the upper end of the mounting frame 1032 is connected to a slide rail 10321, the lower end of the slide rail 10321 is provided with a slide groove, the slide 1033 slides in the slide groove, the mounting frame 1032 is arranged directly above the sliding guide rod 1031, and the lower end of the slide 1033 is installed with a rotation matching component and a clamping component. The combining assembly and the clamping assembly are arranged along the length direction of the sliding guide rod 1031. A sliding groove 1038 is provided on the top of the sliding guide rod 1031. A roller conveying mechanism 1036 is provided at the bottom of the sliding groove 1038. The conveying direction of the roller conveying mechanism 1036 is parallel to the moving direction of the slide 1033. The pushing mechanism 103 can perform bidirectional pushing. The steel bars after turning around are continuously conveyed by the second conveying mechanism 102. When the second conveying mechanism 102 conveys the steel bars to the position corresponding to the feed port of the chamfering machine 2, the pushing mechanism 103 transfers the steel bars to its sliding guide rod 1031, and further transfers them to the first transfer frame 1011 on the first conveying mechanism 101, so that the second end of the steel bars can be processed.

[0031] In the present embodiment, the first transfer frame 1011 includes a first mounting plate 10111, a first supporting plate 10112, a first column 10113 and a first buffer spring 10114. The first mounting plate 10111 is transmission-connected to the first conveying mechanism 101. The first column 10113 is fixedly connected to the first mounting plate 10111. The lower end of the first supporting plate 10112 is fixedly connected to the first mounting plate 10111 via a plurality of first buffer springs 10114. The upper end of the first supporting plate 10112, which is away from the thread rolling device 4, is connected to the upper end of the first column 10113 via the first buffer spring 10114. The top of the first supporting plate 10112 is provided with a supporting groove. A trumpet-shaped guide groove 10115 is provided on one side of the plate 10112 facing the pushing mechanism 103. The trumpet-shaped guide groove 10115 is connected to the supporting groove and is coaxially arranged with the supporting groove. When the steel bars on the pushing mechanism 103 are transferred to the first conveying mechanism 101, the ends of the steel bars abut against the trumpet-shaped guide groove 10115, and the steel bars continue to be pushed. Under the guidance of the trumpet-shaped guide groove 10115, the steel bars reach the supporting groove, so that the first supporting plate 10112 is separated from the column. After the steel bars are processed, they are withdrawn in the direction of the pushing mechanism 103, and the clamping assembly releases the steel bars. Under the action of multiple first buffer springs 10114, the first supporting plate 10112 and the first column 10113 clamp the steel bars and convey them. The automated bolt production line of this embodiment can realize automatic reversal of steel bar raw materials during operation, saving a lot of manpower.

[0032] In this embodiment, the rotational matching assembly includes a first lifting drive cylinder 10341 and a wheel frame 10342. The cylinder body of the first lifting drive cylinder 10341 is fixed on the slide 1033 and its piston rod is arranged downward. The end of the piston rod of the first lifting drive cylinder 10341 is installed with a wheel frame 10342. A plurality of rollers 10343 are rotatably mounted on the wheel frame 10342. The axes of the plurality of rollers 10343 are parallel to the axis of the sliding guide rod 1031, and the axes of the plurality of rollers 10343 are on the same circumference. When the thread rolling device 4 is used for the steel bar, the steel bar needs to be rotated. At this time, the steel bar is pressed onto the sliding guide rod 1031 through the rotational matching assembly, and the steel bar and the roller 10343 are rotationally matched.

[0033] In this embodiment, the clamping assembly includes a second lifting drive cylinder 10351 and a pressing block 10352. The cylinder body of the second lifting drive cylinder 10351 is fixed on the slide 1033 and its piston rod is set downward. The pressing block 10352 is fixedly connected to the end of the piston rod of the second lifting drive cylinder 10351. The clamping assembly is used to fix the steel bars. When chamfering and rod shrinking operations are performed, the steel bars need to be fixed. The second lifting drive cylinder 10351 drives the pressing block 10352 to descend, and the pressing block 10352 presses the steel bars on the sliding guide rod 1031 to prevent them from rotating.

[0034] In this embodiment, a mounting groove 1037 is provided at the bottom of the sliding groove 1038, and the roller conveying mechanism 1036 includes a mounting seat provided in the mounting groove 1037 and a plurality of rotating shafts 10362 rotatably mounted on the mounting seat, each of the rotating shafts 10362 is sleeved and fixedly connected with a rubber roller sleeve, and the plurality of rotating shafts 10362 are divided into two rows, and the two rows of rotating shafts 10362 are inclinedly arranged in a V-shaped symmetrical arrangement, and the low ends of the two rows of rotating shafts 10362 are staggered, and the mounting seat is connected to the frame 1 through a compression spring 10363, and the mounting seat includes two separately arranged frames 103611, each frame 103611 is provided with a row of rotating shafts 10362, and each frame 103611 is connected to the frame 1 through a compression spring 10363.

[0035] Both ends of the sliding guide rod 1031 are provided with straight segments 1039, the top end surface of the straight segments 1039 is lower than the top end surface of the sliding guide rod 1031, and both ends of the roller conveying mechanism 1036 extend to the straight segments 1039. When the steel bar is transported on the first conveying mechanism 101 or the second conveying mechanism 102, both ends thereof pass over the straight segments 1039, so that when the pressing block 10352 is pressed downward, one end of the steel bar can be pressed on the straight segment 1039, so that the steel bar can roll with the roller mechanism, and when the pressing block 10352 moves, the steel bar can roll on the roller mechanism and reach the sliding groove 1038.

[0036] In this embodiment, the forming device 5 includes a high-frequency heating device 501 and a bending mechanism 502 which are arranged in sequence. The bending mechanism 502 includes a machine platform 5021, a hydraulic tooling 5022 and a top block 5023. The top block 5023 and the hydraulic tooling 5022 are both fixed on the top of the machine platform 5021. The piston end of the hydraulic tooling 5022 is arranged opposite to the top block 5023. Two push blocks 5024 are provided at the end of the piston rod of the hydraulic tooling 5022. When the forming device 5 is working, the middle part of the steel bar after thread rolling is first heated by the high-frequency heating device 501, and then the steel bar is placed on the machine platform 5021. The middle part of the steel bar is abutted against the top block 5023, and the piston rod of the hydraulic tooling 5022 is extended to push the two ends of the steel bar in the same direction, so that the steel bar can be bent into a U-shaped bolt.

[0037] In this embodiment, the U-turn transfer mechanism 104 includes a rotating motor 1041, a connecting frame 1042, a finger cylinder 1043 and a guiding device. The rotating motor 1041 is fixedly connected to the frame 1, and the output end of the rotating motor 1041 is arranged upward. The connecting frame 1042 is transmission-connected to the output end of the rotating motor 1041. The cylinder body of the finger cylinder 1043 is installed at the end of the connecting frame 1042. The two clamping arms of the finger cylinder 1043 are provided with a clamping plate 1045 with an arc-shaped cross-section. The guiding device includes a fan-shaped guide plate 1044, and the two radii of the fan-shaped guide plate 1044 are connected to the frame 1. The connecting frame 1042 moves on the fan-shaped guide plate 1044 under the drive of the rotating motor 1041. The top surface of the fan-shaped guide plate 1044 is provided with a plurality of rollers, and the plurality of rollers are arranged in a fan shape.

[0038] When the automated bolt production machine of this embodiment is working, the unprocessed steel bar raw material is placed on the first transfer rack 1011, and the first conveying mechanism 101 drives the first transfer rack 1011 to align with the feed ports of the chamfering machine 2, the rod shrinking machine 3, and the thread rolling device 4 in turn, and the pushing mechanism 103 pushes the steel bar raw material into the processing equipment. After the processing is completed, the pushing mechanism 103 pulls the semi-finished product back to the first transfer rack 1011, and the first conveying rack transfers the transfer rack and the semi-finished product to the next equipment. When the second end of the steel bar needs to be processed, the U-turn transfer mechanism 104 turns the steel bar processed at one end 180 degrees and transfers it to the loading end on the second conveying mechanism 102, and makes it snap-fit ​​into the second transfer rack 1 021, the first conveying mechanism 101 drives the second transfer frame 1021 to move toward the chamfering device. After the steel bar is aligned with the chamfering device, the pushing device on the frame 1 aligned with the chamfering device transfers the steel bar to the first transfer frame 1011 on the first conveying mechanism 101, and the first transfer mechanism can process the unprocessed second end of the steel bar. The second end of the steel bar is processed in sequence by three devices. The steel bar with both ends processed can be removed when it runs to the end of the first conveying mechanism 101. The removed steel bar is transported to the forming device 5 to be completely U-shaped, and the formed U-shaped bolts are then transported to the heat treatment device for quenching and tempering. The heat treatment device adopts existing equipment and methods, which are not repeated here.

[0039] When the automated bolt production line of this embodiment is in operation, after both ends of the first steel bars of the first batch placed on the first conveying mechanism 101 are processed, the user can perform loading operations at the loading end of the second conveying mechanism 102: the unprocessed steel bars are sequentially clamped into the second transfer frame 1021 of the second conveying mechanism 102, the unprocessed steel bars are transported by the second conveying mechanism 102 and pushed into the chamfering machine 2 by the pushing drive mechanism for operation, and further transported by the first conveying mechanism 101 to other processing mechanisms for processing; in addition, the first batch of steel bars can also be placed on the second conveying mechanism 102, and each second transfer frame 1021 is placed with a steel bar, and the pushing mechanism 103 transfers the steel bars to the first conveying mechanism 101, and the subsequent loading operations are all performed by the loading end of the second conveying mechanism 102, and loading is performed once each batch of steel bars is processed.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Automated bolt production line, characterized by: It comprises a frame and a chamfering machine, a rod shrinking machine, a thread rolling device, a forming device and a heat treatment device arranged in sequence, the frame is provided with a conveying device, the conveying device comprises a first conveying mechanism and a second conveying mechanism which are arranged at both ends of the frame and have opposite conveying directions, the first conveying mechanism and the second conveying mechanism are arranged in parallel, the chamfering machine, the rod shrinking machine and the thread rolling device are arranged on one side of the first conveying mechanism, the first conveying mechanism is provided with a plurality of first transfer racks, the second conveying mechanism is provided with a plurality of second transfer racks, a bidirectional pushing mechanism is provided on the top of the frame, the chamfering machine, the rod shrinking machine and the thread rolling device are respectively opposite to a bidirectional pushing mechanism, and a U-turn transfer mechanism is provided on one end of the frame close to the thread rolling device; The two-way pushing mechanism comprises a sliding guide rod arranged at the top of the frame and a pushing driving mechanism mounted above the sliding guide rod, the pushing driving mechanism comprises a mounting frame, a slide slidably matched at the lower end of the mounting frame, and a first driving mechanism mounted on the mounting frame to drive the slide to move, the mounting frame is arranged just above the sliding guide rod, a rotating matching assembly and a clamping assembly are mounted at the lower end of the slide, the rotating matching assembly and the clamping assembly are arranged along the length direction of the sliding guide rod, a sliding groove is arranged at the top of the sliding guide rod, a roller conveying mechanism is arranged at the bottom of the sliding groove, and a conveying direction of the roller conveying mechanism is parallel to a moving direction of the slide; The first transfer frame includes a first mounting plate, a first supporting plate, a first column and a first buffer spring, the first mounting plate is transmission-connected to the first conveying mechanism, the first column is fixedly connected to the first mounting plate, the lower end of the first supporting plate is fixedly connected to the first mounting plate via a plurality of first buffer springs, and the end of the upper end of the first supporting plate away from the thread rolling device is connected to the upper end of the first column via the first buffer spring; The rotation matching assembly includes a first lifting drive cylinder and a wheel frame, wherein the cylinder body of the first lifting drive cylinder is fixed on the slide frame and the piston rod thereof is arranged downward, the end of the piston rod of the first lifting drive cylinder is installed with a wheel frame, and a plurality of rollers are rotatably installed on the wheel frame, the axes of the plurality of rollers are parallel to the axis of the sliding guide rod, and the axes of the plurality of rollers are on the same circumference; The clamping assembly includes a second lifting drive cylinder and a press block. The cylinder body of the second lifting drive cylinder is fixed on the slide and its piston rod is arranged downward. The press block is fixedly connected to the end of the piston rod of the second lifting drive cylinder.

2. The automated bolt production line according to claim 1 is characterized in that: A mounting groove is provided at the bottom of the sliding groove, and the roller conveying mechanism includes a mounting seat arranged in the mounting groove and a plurality of rotating shafts rotatably mounted on the mounting seat, each of the rotating shafts is sleeved and fixedly connected with a rubber roller sleeve, and the plurality of rotating shafts are divided into two rows, the two rows of rotating shafts are tilted and symmetrically arranged in a V shape, and the low ends of the two rows of rotating shafts are staggered, and the mounting seat is connected to the frame through a compression spring.

3. The automated bolt production line according to claim 2 is characterized in that: The mounting seat comprises two separately arranged frames, each frame is provided with a row of rotating shafts, and each frame is connected to the frame through a compression spring.

4. The automated bolt production line according to claim 1 is characterized in that: Both ends of the sliding guide rod are provided with straight sections, the height of the top end surface of the straight section is lower than the height of the top end surface of the sliding guide rod, and both ends of the roller conveying mechanism extend to the straight sections respectively.

5. The automated bolt production line according to claim 1 is characterized in that: A supporting groove is provided at the top of the first supporting plate, and a trumpet-shaped guide groove is provided on one side of the first supporting plate facing the bidirectional pushing mechanism. The trumpet-shaped guide groove is connected to the supporting groove and is coaxially arranged with the supporting groove.

6. The automated bolt production line according to claim 1 is characterized in that: The U-turn transfer mechanism includes a rotating motor, a connecting frame, a finger cylinder and a guide device. The rotating motor is fixedly connected to the frame, and the output end of the rotating motor is arranged upward. The connecting frame is transmission-connected to the output end of the rotating motor. The cylinder body of the finger cylinder is installed at the end of the connecting frame. The two clamping arms of the finger cylinder are provided with clamping plates with arc-shaped cross-sections. The guide device includes a fan-shaped guide plate. The two radii of the fan-shaped guide plate are connected to the frame. The connecting frame moves on the fan-shaped guide plate under the drive of the rotating motor. The top surface of the fan-shaped guide plate is provided with a plurality of rollers, and the plurality of rollers are arranged in a fan shape.

7. The automated bolt production line according to any one of claims 1 to 6, characterized in that: The forming device includes a high-frequency heating device and a bending mechanism which are arranged in sequence. The bending mechanism includes a machine platform, a hydraulic tooling and a top block. The top block and the hydraulic tooling are both fixed on the top of the machine platform. The piston end of the hydraulic tooling is arranged opposite to the top block. Two push blocks are arranged at the end of the piston rod of the hydraulic tooling.

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