A cutting device for roller bar stock of a motorcycle chain link

Abstract

The present invention relates to the technical field of bar cutting, and discloses a roller bar cutting device for motorcycle chain links, including a bottom plate, and further including: a U-shaped frame fixedly installed on the top of the bottom plate; a feeding assembly arranged on the top of the bottom plate for conveying the bar; a cutting assembly arranged at the bottom of the horizontal side of the U-shaped frame for cutting the bar; a fixed-length detection assembly for detecting the length of the bar conveyed by the feeding assembly. The present invention can automatically detect the conveyed length when conveying the bar, and can automatically make the cutting disc cut the bar after the bar reaches the specified length, ensuring the consistency and quickness of the length of the cut bar, avoiding the situation of low efficiency of manual measurement, and thus improving the use efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of bar cutting, in particular to a roller bar cutting device for a motorcycle chain link. Background Art

[0002] The roller bar stock of motorcycle chain refers to the raw material used to manufacture the rolling part of the chain. The chain is an indispensable and important component in the motorcycle transmission system, especially the transmission part used to connect the engine and the rear wheel to provide power transmission function. The motorcycle chain is usually composed of chain links, pins, rollers, outer link plates and inner link plates. Among them, the roller is an important moving part in the chain, which is responsible for reducing friction and enhancing durability. Cutting equipment is required during the production of the roller bar stock of motorcycle chain links.

[0003] Although the current roller bar cutting device for motorcycle chain links can cut the bar, it usually needs to be cut into fixed lengths. Before cutting, it needs to be measured manually to a fixed length, and continuous cutting cannot be performed, which greatly reduces the cutting efficiency. In addition, the manual measurement error is large, which reduces the use effect. Therefore, it is urgent to design a roller bar cutting device for motorcycle chain links. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a roller bar cutting device for motorcycle chain links.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A roller bar cutting device for a motorcycle chain link comprises a bottom plate, a feeding trough is provided on the top of the bottom plate, a feeding box is fixed on the bottom of the bottom plate and arranged below the feeding trough, and further comprises:

[0007] U-shaped frame, the U-shaped frame is fixedly installed on the top of the bottom plate;

[0008] A feeding assembly is arranged on the top of the bottom plate and is used to transport the bar material;

[0009] A cutting assembly is arranged at the bottom of the horizontal side of the U-shaped frame and is used to cut the bar material;

[0010] The fixed-length detection component is arranged on the top of the base plate, and the fixed-length detection component is also connected to the cutting component. The fixed-length detection component is used to detect the length of the bar material conveyed by the feeding component.

[0011] As a further technical solution of the present invention, the cutting assembly includes: a connecting plate, which is horizontally arranged below the horizontal side of the U-shaped frame. Two symmetrically arranged first spring rods are vertically fixed on the top of the connecting plate, and the fixed ends of the two first spring rods are fixedly installed at the bottom of the horizontal side of the U-shaped frame. Two symmetrically arranged second spring rods are vertically fixed on the bottom of the connecting plate, and the telescopic ends of the two second spring rods are fixedly installed with a U-shaped plate. A cutting disc is rotatably installed between the two vertical sides of the U-shaped plate, and a second motor is installed on the outer side of the vertical side of the U-shaped plate. The output end of the second motor is fixedly installed at the center of the side of the cutting disc.

[0012] As a further technical solution of the present invention, the fixed-length detection assembly includes: a detection plate and a control mechanism. One end of the top of the bottom plate is vertically fixedly installed with a limiting plate, and two symmetrically arranged fifth spring rods are fixed on the side of the limiting plate. The side of the detection plate is fixedly installed at the telescopic ends of the two fifth spring rods, and the detection plate is vertically arranged. The control mechanism is arranged between the detection plate and the limiting plate, and the control mechanism is used to control the conveying assembly.

[0013] As a further technical solution of the present invention, a driving plate is horizontally fixedly installed at the top end of the side of the detection plate close to the U-shaped frame. The bottom of the driving plate slides between the top of the connecting plate, and a ramp block is fixedly installed at the bottom end of the driving plate away from the detection plate. The ramp on the ramp block slides between the connecting plate, and a push plate is also fixedly installed at the bottom of the driving plate.

[0014] As a further technical solution of the present invention, horizontal grooves are respectively opened on the opposite sides of the two vertical sides of the U-shaped frame, and a T-shaped plate is horizontally arranged between the two horizontal grooves. The two ends of the long side of the T-shaped plate are respectively slidably installed inside the two horizontal grooves, and third spring rods are fixedly installed at the inner ends of the two horizontal grooves. The telescopic ends of the third spring rods are fixedly installed on the side of the T-shaped plate.

[0015] As a further technical solution of the present invention, a baffle is vertically fixedly installed on the top of the T-shaped plate, and the top of the baffle slides with the bottom of the driving plate. A fixed block is fixedly installed on the side of the U-shaped plate. The short side of the T-shaped plate is located at the bottom of the fixed block, and the short side of the T-shaped plate slides with the fixed block. An inclined surface is opened at the bottom of the short side of the T-shaped plate.

[0016] As a further technical solution of the present invention, Z-shaped grooves are respectively opened on both sides of the detection plate, and sliding rods are slidably installed inside the Z-shaped grooves. Two symmetrically arranged first telescopic rods are fixed on the side of the U-shaped plate, and the telescopic ends of the two first telescopic rods are rotatably installed at the ends of the two sliding rods.

[0017] As a further technical solution of the present invention, the control mechanism includes: a control board, which is horizontally and fixedly installed inside the limit board. An isosceles trapezoidal groove is formed on the side of the control board, and an inner groove located at the end is further formed inside the isosceles trapezoidal groove. A slope is formed at the end of the inner groove. A sliding column is slidably installed inside the isosceles trapezoidal groove. A circular groove is formed at the end of the sliding column, and a fourth spring rod is fixedly installed inside the circular groove. The telescopic end of the fourth spring rod is adapted to the inner groove.

[0018] As a further technical solution of the present invention, a copper block is rotatably installed at the end of the sliding column, and a fixed rod is horizontally and fixedly installed on the end face of the copper block. A vertical groove is vertically formed on the side of the detection board. A slider is slidably installed inside the vertical groove, and a sixth spring rod connected to the bottom of the slider is fixed at the inner end of the vertical groove. The other end of the fixed rod is fixedly installed on the side of the slider. A copper plate is horizontally and fixedly installed on the side of the control board.

[0019] As a further technical solution of the present invention, the feeding assembly includes: four vertical plates, which are all vertically and fixedly installed on the top of the vertical plate. The four vertical plates are divided into two groups, and two conveying rollers are rotatably installed up and down between each group of vertical plates. Four belt pulleys connected to the conveying rollers are rotatably installed on the sides of the corresponding two vertical plates. A belt is sleeved on the surfaces of the corresponding two belt pulleys. Two first motors connected to the conveying rollers are installed on the sides of the corresponding vertical plates. The rotation directions of the two first motors are opposite, and both of the two first motors are electrically connected to the copper plate and the copper block.

[0020] The beneficial effects of the present invention are as follows:

[0021] First, in the present invention, through the settings of the feeding assembly, the cutting assembly and the fixed-length detection assembly, it is possible to automatically detect the length of the conveyed bar stock during the conveyance of the bar stock, and the cutting disc can automatically cut the bar stock after the bar stock reaches the specified length, ensuring the consistency and quickness of the cutting length of the bar stock, avoiding the low efficiency of manual measurement, and thus improving the use efficiency of the device;

[0022] Second, in the present invention, through the settings of the fixed-length detection assembly, the feeding assembly and the control mechanism, it is possible to automatically control the feeding assembly to stop working after the bar stock conveyed by the feeding assembly reaches the specified length. In addition, the feeding assembly can be automatically started to continue conveying the bar stock after the cutting is completed, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a cutting device for a roller bar stock of a motorcycle chain link proposed by the present invention;

[0024] Figure 2 is a rear view structural diagram of a cutting device for a roller bar stock of a motorcycle chain link proposed by the present invention;

[0025] Figure 3Schematic structural diagram of the U-shaped frame of a roller bar stock cutting device for motorcycle chain links proposed by the present invention;

[0026] Figure 4 For Figure 3 Enlarged schematic diagram of part A in;

[0027] Figure 5 Bottom view structural schematic diagram of the U-shaped frame of a roller bar stock cutting device for motorcycle chain links proposed by the present invention;

[0028] Figure 6 For Figure 5 Enlarged schematic diagram of part B in;

[0029] Figure 7 Schematic structural diagram of the roller bar stock cutting device for motorcycle chain links proposed by the present invention after removing the U-shaped frame;

[0030] Figure 8 For Figure 7 Enlarged schematic diagram of part C in;

[0031] Figure 9 Schematic structural diagram of the cross-section of the sliding column of the roller bar stock cutting device for motorcycle chain links proposed by the present invention after separation from the isosceles trapezoidal groove and the sliding column.

[0032] In the figure: 1, bottom plate; 2, U-shaped frame; 3, conveying roller; 4, first motor; 5, belt; 6, vertical plate; 7, limiting plate; 8, U-shaped plate; 9, cutting disc; 10, second motor; 11, blanking box; 12, fifth spring rod; 13, detection plate; 14, control plate; 15, connecting plate; 16, first spring rod; 17, second spring rod; 18, driving plate; 19, T-shaped plate; 20, baffle; 21, pushing plate; 22, Z-shaped groove; 23, sliding rod; 24, first telescopic rod; 25, fixed block; 26, ramp block; 27, transverse groove; 28, third spring rod; 29, fixed rod; 30, isosceles trapezoidal groove; 31, inner groove; 32, copper plate; 33, copper block; 34, sliding column; 35, fourth spring rod; 36, vertical groove. Detailed implementation manners

[0033] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to the attached Figure 1 -Attached Figure 9 A roller bar cutting device for a motorcycle chain link comprises a bottom plate 1, a feeding trough is provided on the top of the bottom plate 1, and a feeding box 11 arranged below the feeding trough is fixed at the bottom of the bottom plate 1, and further comprises: a U-shaped frame 2, a feeding assembly, a cutting assembly and a fixed length detection assembly, wherein the U-shaped frame 2 is fixedly mounted on the top of the bottom plate 1, the feeding assembly is arranged on the top of the bottom plate 1, the feeding assembly is used to convey the bar, the cutting assembly is arranged at the bottom of the horizontal side of the U-shaped frame 2, the cutting assembly is used to cut the bar, the fixed length detection assembly is arranged on the top of the bottom plate 1, and the fixed length detection assembly is also connected to the cutting assembly, and the fixed length detection assembly is used to detect the length of the bar conveyed by the feeding assembly;

[0036] As described above, the conveying length of the bar material can be automatically detected when conveying the bar material, and the cutting disc 9 can automatically cut the bar material after the bar material reaches the specified length, thereby ensuring the consistency and speed of cutting the bar material length.

[0037] Please refer to the attached Figure 1 -Attached Figure 3 In a preferred embodiment, the cutting assembly includes: a connecting plate 15, the connecting plate 15 is horizontally arranged below the horizontal side of the U-shaped frame 2, two symmetrically arranged first spring rods 16 are vertically fixed to the top of the connecting plate 15, and the fixed ends of the two first spring rods 16 are fixedly installed at the bottom of the horizontal side of the U-shaped frame 2, two symmetrically arranged second spring rods 17 are vertically fixed to the bottom of the connecting plate 15, and the telescopic ends of the two second spring rods 17 are fixedly installed with the U-shaped plate 8, a cutting disc 9 is rotatably installed between the two vertical sides of the U-shaped plate 8, and a second motor 10 is installed on the outer side of the vertical side of the U-shaped plate 8, and the output end of the second motor 10 is fixedly installed at the center of the side of the cutting disc 9;

[0038] Specifically, the second motor 10 drives the cutting disc 9 to rotate, so that the rotating cutting disc 9 contacts the bar material and cuts the bar material.

[0039] Please refer to the attached Figure 1 -Attached Figure 9, in a preferred embodiment, the fixed-length detection component includes: a detection plate 13 and a control mechanism. One end of the top of the bottom plate 1 is vertically and fixedly installed with a limit plate 7, and two symmetrically arranged fifth spring rods 12 are fixed on the side of the limit plate 7. The side of the detection plate 13 is fixedly installed at the telescopic ends of the two fifth spring rods 12, and the detection plate 13 is vertically arranged. The control mechanism is arranged between the detection plate 13 and the limit plate 7, and the control mechanism is used to control the conveying component. A driving plate 18 is horizontally and fixedly installed at the top end of the side of the detection plate 13 close to the U-shaped frame 2. The bottom of the driving plate 18 slides with the top of the connecting plate 15, and a ramp block 26 is fixedly installed at the bottom end of the driving plate 18 away from the detection plate 13. The ramp on the ramp block 26 slides with the connecting plate 15, and a push plate 21 is also fixedly installed at the bottom of the driving plate 18. Horizontal grooves 27 are opened on the opposite sides of the two vertical sides of the U-shaped frame 2, and a T-shaped plate 19 is horizontally arranged between the two horizontal grooves 27. The two long ends of the T-shaped plate 19 are respectively slidably installed inside the two horizontal grooves 27, and third spring rods 28 are fixedly installed at the inner ends of the two horizontal grooves 27. The telescopic ends of the third spring rods 28 are fixedly installed on the side of the T-shaped plate 19. A baffle 20 is vertically and fixedly installed at the top of the T-shaped plate 19, and the top of the baffle 20 slides with the bottom of the driving plate 18. A fixed block 25 is fixedly installed on the side of the U-shaped plate 8. The short side of the T-shaped plate 19 is located at the bottom of the fixed block 25, and the short side of the T-shaped plate 19 slides with the fixed block 25. An inclined surface is opened at the bottom of the short side of the T-shaped plate 19. Z-shaped grooves 22 are opened on both sides of the detection plate 13, and slide rods 23 are slidably installed inside the Z-shaped grooves 22. Two symmetrically arranged first telescopic rods 24 are fixed on the side of the U-shaped plate 8, and the telescopic ends of the two first telescopic rods 24 are rotatably installed at the ends of the two slide rods 23;

[0040] Preferably, through the movement of the detection plate 13, when the fixed block 25 and the T-shaped plate 19 are separated and unlocked, at this time, the copper plate 32 and the copper block 33 are separated, and the feeding component stops working, which indicates that the preset feeding length is reached, and the bar stock can be automatically cut.

[0041] Please refer to the attached Figure 2 - attached Figure 9, in a preferred embodiment, the control mechanism includes: a control board 14, which is horizontally and fixedly installed inside the limit board 7. An isosceles trapezoidal groove 30 is formed on the side of the control board 14, and an inner groove 31 located at the end is further formed inside the isosceles trapezoidal groove 30. A slope is formed at the end of the inner groove 31. A sliding column 34 is slidably installed inside the isosceles trapezoidal groove 30. A circular groove is formed at the end of the sliding column 34, and a fourth spring rod 35 is fixedly installed inside the circular groove. The telescopic end of the fourth spring rod 35 is adapted to the inner groove 31. A copper block 33 is rotatably installed at the end of the sliding column 34, and a fixed rod 29 is horizontally and fixedly installed on the end face of the copper block 33. A vertical groove 36 is vertically formed on the side of the detection board 13. A slider is slidably installed inside the vertical groove 36, and a sixth spring rod connected to the bottom of the slider is fixed at the inner end of the vertical groove 36. The other end of the fixed rod 29 is fixedly installed on the side of the slider. A copper plate 32 is horizontally and fixedly installed on the side of the control board 14;

[0042] Further, the copper block 33 moves along the path of the isosceles trapezoidal groove 30 to ensure that the copper block 33 does not contact the copper plate 32 during the return journey, further controlling the feeding assembly.

[0043] Please refer to the appendix Figure 1 , in a preferred embodiment, the feeding assembly includes: four vertical plates 6, which are all vertically and fixedly installed on the top of the vertical plates 6. The four vertical plates 6 are divided into two groups. Two conveying rollers 3 are rotatably installed up and down between each group of vertical plates 6. Four belt pulleys connected to the conveying rollers 3 are rotatably installed on the sides of the corresponding two vertical plates 6. A belt 5 is sleeved on the surfaces of the corresponding two belt pulleys. Two first motors 4 connected to the conveying rollers 3 are installed on the sides of the corresponding vertical plates 6. The rotation directions of the two first motors 4 are opposite, and both of the two first motors 4 are electrically connected to the copper plate 32 and the copper block 33;

[0044] As described above, the two first motors 4 work to drive the four conveying rollers 3 through the belt 5 and the belt pulleys to drive the bar stock for conveying.

[0045] The working principle of the present invention: First, place the roller bar stock of the motorcycle chain link between the four conveying rollers 3, and then energize the two first motors 4. At this time, the copper plate 32 and the copper block 33 are in contact, and the two first motors 4 work to drive the four conveying rollers 3 through the belt 5 and the belt pulleys to drive the bar stock for conveying;

[0046] When the bar stock contacts the detection plate 13, it will push the detection plate 13 to move. The movement of the detection plate 13 drives the fixed rod 29, the sliding rod 23 and the driving plate 18 to move and causes the fifth spring rod 12 to generate elastic force, then the first telescopic rod 24 will extend. The movement of the driving plate 18 drives the ramp block 26 to move. After the ramp block 26 contacts the connecting plate 15, it will cause the connecting plate 15 to move downward. Due to the limiting effect of the T-shaped plate 19 on the fixed block 25, the U-shaped plate 8 will not move downward at this time. Then the second spring rod 17 generates elastic force and the first spring rod 16 generates tensile force. The movement of the fixed rod 29 drives the copper block 33 and the sliding column 34 to move. At this time, the copper block 33 and the copper plate 32 are always in contact and the feeding assembly keeps working. When the sliding column 34 moves to the end of the isosceles trapezoidal groove 30, at this time, the telescopic end of the fourth spring rod 35 is located inside the inner groove 31, and the copper block 33 and the copper plate 32 are also separated and no longer in contact, then the first motor 4 stops working, and the push plate 21 will also contact the baffle 20 and push the baffle 20 to move. The movement of the baffle 20 drives the T-shaped plate 19 to move and causes the third spring rod 28 to generate elastic force. At this time, the T-shaped plate 19 no longer limits the fixed plate, then the elastic force generated by the second spring rod 17 will cause the U-shaped plate 8 and its connecting components to move downward together, and further the cutting disc 9 will contact the bar stock and cut the bar stock;

[0047] The downward movement of the U-shaped plate 8 will also drive the first telescopic rod 24 to move downward. The downward movement of the first telescopic rod 24 drives the sliding rod 23 to move downward. As the cutting disc 9 moves downward, when the cutting of the bar stock by the cutting disc 9 is completed, the sliding rod 23 will enter the inclined section of the Z-shaped groove 22. It should be noted that the sliding rod 23 will not enter the end of the Z-shaped groove 22, so that the detection plate 13 continues to move a certain distance away from the U-shaped frame 2 to enable the cut bar stock to smoothly fall into the blanking box 11 through the blanking groove;

[0048] After the cut bar stock is blanked, the elastic force generated by the fifth spring rod 12 will cause the detection plate 13 to reset and move toward the U-shaped frame 2. The movement of the detection plate 13 drives the fixed rod 29, the driving plate 18 and the sliding rod 23 to move and reset. The movement of the driving plate 18 will cause the ramp block 26 and the connecting plate 15 to separate, then the tensile force generated by the first spring rod 16 will cause the U-shaped plate 8 and its connecting components to move upward together, and the elastic force generated by the third spring rod 28 will also cause the T-shaped plate 19 to reset, and continue to limit the U-shaped plate 8 through the fixed block 25. Due to the setting of the inner groove 31, when the fixed rod 29 drives the copper block 33 to reset, it will first move obliquely downward along the inner groove 31 to ensure that the copper block 33 will not contact the copper plate 32 during reset. When the sliding column 34 moves and resets to the end of the isosceles trapezoidal groove 30, the elastic force generated by the sixth spring rod will make the sliding column 34 placed at the corresponding top of the isosceles trapezoidal groove 30. At this time, the copper plate 32 and the copper block 33 are in contact and the feeding mechanism continues to work to convey the bar stock;

[0049] In summary, by repeating the above steps in sequence, the bar stock can be automatically and continuously cut, thereby improving the cutting efficiency of the equipment.

[0050] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roller bar cutting device for a motorcycle chain link, comprising a bottom plate (1), a feeding trough penetrating the top of the bottom plate (1), and a feeding box (11) arranged below the feeding trough fixed to the bottom of the bottom plate (1), characterized in that: Further included are: a U-shaped frame (2), which is fixedly installed on the top of the bottom plate (1); a feeding component, which is arranged on the top of the bottom plate (1) and is used for conveying the bar stock; a cutting component, which is arranged at the bottom of the horizontal side of the U-shaped frame (2) and is used for cutting the bar stock; Fixed-length detection component, the fixed-length detection component is arranged on the top of the bottom plate (1), and the fixed-length detection component is also connected to the cutting component. The fixed-length detection component is used to detect the length of the rod material conveyed by the feeding component. The cutting component includes: a connecting plate (15), the connecting plate (15) is horizontally arranged under the horizontal side of the U-shaped frame (2), two symmetrically arranged first spring rods (16) are vertically fixed on the top of the connecting plate (15), and the fixed ends of the two first spring rods (16) are fixedly installed on the bottom of the horizontal side of the U-shaped frame (2). Two symmetrically arranged second spring rods (17) are vertically fixed on the bottom of the connecting plate (15), and a U-shaped plate (8) is fixedly installed at the telescopic ends of the two second spring rods (17). A cutting disc (9) is rotatably installed between the two vertical sides of the U-shaped plate (8), and a second motor (10) is installed on the outer side of the vertical side of the U-shaped plate (8). The output end of the second motor (10) is fixedly installed at the center of the side of the cutting disc (9). The fixed-length detection component includes: a detection plate (13) and a control mechanism. One end of the top of the bottom plate (1) is vertically fixedly installed with a limiting plate (7), and two symmetrically arranged fifth spring rods (12) are fixed on the side of the limiting plate (7). The side of the detection plate (13) is fixedly installed at the telescopic ends of the two fifth spring rods (12), and the detection plate (13) is vertically arranged. The control mechanism is arranged between the detection plate (13) and the limiting plate (7), and the control mechanism is used to control the conveying component. A driving plate (18) is horizontally fixedly installed at the top end of the side of the detection plate (13) close to the U-shaped frame (2). The bottom of the driving plate (18) slides between the top of the connecting plate (15), and a ramp block (26) is fixedly installed at the bottom end of the driving plate (18) away from the detection plate (13). The ramp on the ramp block (26) slides between the connecting plate (15), and a push plate (21) is also fixedly installed at the bottom of the driving plate (18). Horizontal grooves (27) are opened on the opposite sides of the two vertical sides of the U-shaped frame (2), and a T-shaped plate (19) is horizontally arranged between the two horizontal grooves (27). The two long ends of the T-shaped plate (19) are respectively slidably installed inside the two horizontal grooves (27), and third spring rods (28) are fixedly installed at the inner ends of the two horizontal grooves (27). The telescopic ends of the third spring rods (28) are fixedly installed on the side of the T-shaped plate (19). A baffle (20) is vertically fixedly installed on the top of the T-shaped plate (19), and the top of the baffle (20) slides with the bottom of the driving plate (18). A fixed block (25) is fixedly installed on the side of the U-shaped plate (8). The short side of the T-shaped plate (19) is located at the bottom of the fixed block (25), and the short side of the T-shaped plate (19) slides with the fixed block (25). An inclined surface is opened at the bottom of the short side of the T-shaped plate (19). Z-shaped grooves (22) are opened on both sides of the detection plate (13), and sliding rods (23) are slidably installed inside the Z-shaped grooves (22). Two symmetrically arranged first telescopic rods (24) are fixed on the side of the U-shaped plate (8), and the telescopic ends of the two first telescopic rods (24) are rotatably installed at the ends of the two sliding rods (23).The control mechanism includes: a control board (14), the control board (14) is horizontally and fixedly installed inside the limit board (7), an isosceles trapezoidal groove (30) is formed on the side of the control board (14), and an inner groove (31) located at the end is further formed inside the isosceles trapezoidal groove (30), a slope is formed at the end of the inner groove (31), a sliding column (34) is slidably installed inside the isosceles trapezoidal groove (30), a circular groove is formed at the end of the sliding column (34), and a fourth spring rod (35) is fixedly installed inside the circular groove, and the telescopic end of the fourth spring rod (35) is adapted to the inner groove (31).

2. The roller bar stock cutting device for a motorcycle chain link according to claim 1, characterized in that a copper block (33) is rotatably installed at the end of the sliding column (34), and a fixing rod (29) is horizontally fixedly installed on the end face of the copper block (33). A vertical groove (36) is vertically formed on the side face of the detection plate (13). A slider is slidably installed inside the vertical groove (36), and a sixth spring rod connected to the bottom of the slider is fixed at the inner end of the vertical groove (36). The other end of the fixing rod (29) is fixedly installed on the side face of the slider. A copper plate (32) is horizontally fixedly installed on the side face of the control plate (14).

3. A roller bar stock cutting device for a motorcycle link according to claim 1, characterized in that, The feeding component includes: vertical plates (6). There are four vertical plates (6), and the four vertical plates (6) are all vertically and fixedly installed on the top of the vertical plates (6). The four vertical plates (6) are divided into two groups. Two conveying rollers (3) are rotatably installed up and down between each group of vertical plates (6). Four belt pulleys connected to the conveying rollers (3) are rotatably installed on the side faces of the corresponding two vertical plates (6). A belt (5) is sleeved on the surfaces of the corresponding two belt pulleys. Two first motors (4) connected to the conveying rollers (3) are installed on the side faces of the corresponding vertical plates (6). The rotation directions of the two first motors (4) are opposite, and the two first motors (4) are both electrically connected to the copper plate (32) and the copper block (33).

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