Plate-type chain straightening and cutting-off equipment and production process

Abstract

The invention relates to the technical field of cutting-off equipment, in particular to plate type chain straightening and cutting-off equipment and a production technology.The plate type chain straightening and cutting-off equipment comprises a machine table, a straightening mechanism, a conveying mechanism and a cutting-off mechanism, guide frames distributed in an arc shape are arranged on the machine table, and an elbow guide plate and a cutting-off channel composed of an outer blocking base and an inner blocking base are installed on the machine table; the elbow guide plate is matched with the guide roller to guide the chain to enter the cut-off channel; the conveying mechanism comprises a conveying gear driven by a servo motor, and the conveying gear rotates to convey the chain to the cut-off channel in a fixed-length mode. The cutting mechanism comprises a hydraulically-driven lifting seat and a rod type pressing head, and a magnetic seat is connected to the lifting seat to drive a magnetic control assembly; tensioning structures are symmetrically arranged in the inner blocking base and comprise sliding bases capable of sliding transversely, inserting rods are installed in the sliding bases through magnetic control assemblies, and the inserting rods can be inserted into chain gaps before cutting and tensioned towards the two sides through pressure springs. The purposes of accurately cutting off the chain and guaranteeing the machining quality are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, in particular to a plate chain straightening and cutting equipment and a production process. Background Art

[0002] Plate chain is a traction component composed of chain plates and pins. It has the characteristics of strong load-bearing capacity, smooth operation, and wear resistance. It is widely used in food processing, packaging machinery, logistics transportation, mining equipment and other fields. Chain manufacturing is usually produced in standard coils or long sections, and needs to be cut into final products according to customer needs. At present, the cutting equipment usually generates pressure through a hydraulic mechanism, which acts on the pin of the plate chain to disengage the pin to complete the cutting. However, since the chain is prone to bending and twisting when it is transported to the cutting position, it needs to be straightened to ensure that the pressure of the cutting mechanism accurately acts on the pin that needs to be cut.

[0003] In current cutting equipment, the chain is generally guided and conveyed by a multi-roller mechanism to move under the cutting mechanism. The cutting equipment usually determines the cutting position through a visual detection structure and dynamically adjusts the cutting mechanism to ensure the accuracy of the cutting. Its structure is complex and depends on the coordination between the visual detection mechanism and the conveying mechanism, which is prone to errors. If the positioning is only based on the fixed fixture, if there is residual stress or slight deformation in the chain, it may cause the incision position to shift, affecting the quality of the chain. In addition, the fixed fixture usually leaves an outlet for the cut surplus material, and the gap generated at the outlet is likely to affect the accuracy of the straightening and positioning. Summary of the invention

[0004] The purpose of the present invention is to provide a plate chain straightening and cutting device and a production process to achieve the purpose of accurately cutting the chain and ensuring the processing quality, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plate chain straightening and cutting device, comprising a machine platform, a straightening mechanism, a conveying mechanism and a cutting mechanism, the machine platform is provided with an arc-shaped guide frame, and an elbow guide plate and a cutting channel composed of an outer stop seat and an inner stop seat are installed on the machine platform, the elbow guide plate cooperates with a guide roller to guide the chain to turn and enter the cutting channel;

[0006] The conveying mechanism includes a conveying gear driven by a servo motor, and the conveying gear conveys the chain to a cutting channel at a fixed length by rotating;

[0007] The cutting mechanism includes a hydraulically driven lifting seat and a rod-type pressure head, the pressure head can be aligned with the chain pin, and the lifting seat is connected to a magnetic seat to drive the magnetic control component;

[0008] A tensioning structure is symmetrically arranged in the inner stopper, including a sliding seat that can slide laterally, in which a plunger is installed through a magnetic control component, and the plunger can be inserted into the gap of the chain before cutting and tensioned to both sides through a pressure spring to straighten the chain;

[0009] The machine is also provided with a pushing structure, including an electric push rod, a top plate and a rotating plate with linkage control. The rotating plate is kept in a vertical state by a torsion spring and locked by a spring pin. The top plate releases the spring pin through a wedge block and pushes the residual material out.

[0010] Preferably, the inner stopper adopts a hollow structure, in which the slide seat is installed through a guide groove, and the slide seat is limited by an elastic member;

[0011] The slide seat adopts a hollow structure, a magnetic plate is slidably installed in the slide seat, and an insertion rod and a return spring are fixedly connected to the magnetic plate. The elastic force of the return spring causes the insertion rod to retract into the slide seat.

[0012] Preferably, the magnetic seat can generate magnetic repulsion on the magnetic plate, and the magnetic plate drives the plug rod to extend from the slide seat;

[0013] Two slide seats are symmetrically arranged in the inner stop seat, and a cone head is fixedly installed at the bottom of the magnetic plate, the cone head is located below the slide seat, a pressure spring is fixedly installed in the inner stop seat, and a push head is fixedly installed at the end of the pressure spring.

[0014] Preferably, a downward telescopic rod is fixedly connected to the lifting seat, and the telescopic rod is an elastic telescopic member, and a magnetic seat is fixedly installed at the bottom end of the telescopic rod.

[0015] Preferably, the pushing structure is arranged on the outer stop seat, and the pushing structure also includes a limit seat fixedly mounted on the machine platform, a spring rod is slidably mounted in the limit seat, and the end of the spring rod is fixedly connected to a pushing plate, so that the pushing plate is kept filled in the gap of the outer stop seat by elastic force.

[0016] Preferably, the electric push rod is installed on the machine platform, and the top plate is fixedly installed on the telescopic part of the electric push rod. The movement of the top plate can generate pressure on the push plate, and the remaining material after the chain is cut off is pushed through the movement of the push plate.

[0017] Preferably, a through hole for the remaining material after cutting is provided in the middle of the inner stop seat, and the rotating plate is rotatably installed in the through hole through a rotating shaft, and a torsion spring is installed on the rotating shaft.

[0018] Preferably, a spring pin is movably installed on the inner stop seat, and the spring pin can be inserted into the positioning hole of the rotating shaft for limiting, and a wedge block is installed on the side of the spring pin;

[0019] A top frame is fixedly installed on the top plate, and the wedge block is pushed upward by the top frame.

[0020] Preferably, the cutting mechanism is located above the inner stopper and the outer stopper, and the cutting mechanism comprises a support, on which a hydraulic rod and a guide rail are fixedly mounted, a lifting seat is slidably mounted on the guide rail, and a pressure head is mounted on the bottom surface of the lifting seat.

[0021] A production process of a plate chain straightening and cutting device, the production process comprising the following steps:

[0022] S1, feeding and fixed-length conveying, the chain is guided into the cutting channel by the arc guide frame and the elbow guide plate, the conveying gear engages the chain and measures the number of rotations, and the chain is conveyed to the cutting position between the inner block seat and the outer block seat at a fixed length;

[0023] S2, magnetic control tensioning and straightening, the lifting seat descends, the magnetic control component is triggered by the telescopic rod, the insertion rod is inserted into the chain gap, and the chain is tensioned symmetrically on both sides by the pressure spring to eliminate bending deformation;

[0024] S3, hydraulic cutting, after the straightening is completed, the hydraulic driving pressure head is aligned with the axis of the chain pin shaft and pressurized to press the pin shaft out to complete the cutting;

[0025] S4, residual material cleaning, the electric push rod drives the top plate to move, lifts the wedge block to release the lock of the rotating plate by the spring pin, and the push plate pushes the residual material, which in turn pushes the rotating plate to rotate and open the through port to discharge the residual material.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention uses a magnetically controlled plunger to perform bidirectional symmetrical tensioning on the chain before cutting, which completely eliminates chain bending and residual stress, ensures that the incision position is accurately aligned with the pin axis, and ensures the cutting effect. The straightening action and the cutting process are triggered by the lifting seat in conjunction, which can avoid the error accumulation caused by secondary positioning.

[0028] 2. The straightening, cutting and residual material cleaning of the present invention are carried out automatically. The conveying gear driven by the servo motor controls the chain conveying length by the number of turns, and then the final positioning of the cutting position is carried out through the tensioning structure. It is simpler and more effective than the existing visual inspection scheme, and the tensioning force of the inserted rod is flexibly controlled by the pressure spring to prevent overload from damaging the chain link structure.

[0029] 3. The present invention can perform self-cleaning of residual materials. Through the linkage design of the pushing structure and the rotating plate, the residual materials are automatically discharged after cutting and the guide channel is reset, avoiding the risk of downtime caused by manual intervention. When the residual material cleaning work has not started, it does not affect the integrity of the guide channel, ensuring that the chain can be transported in a straight line and ensuring the accuracy of cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the first schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a second schematic diagram of the overall structure of the present invention.

[0032] Figure 3 It is a schematic diagram of the cutting mechanism and the conveying mechanism.

[0033] Figure 4 It is a schematic diagram of the conveying mechanism of the present invention.

[0034] Figure 5 It is a schematic diagram of the push plate structure of the present invention.

[0035] Figure 6 It is a schematic diagram of the inner stopper structure of the present invention.

[0036] Figure 7 It is a schematic diagram of the internal structure of the inner stopper of the present invention.

[0037] Figure 8 It is a schematic diagram of the slide structure of the present invention.

[0038] Fig. 9 It is a schematic diagram of the cutting mechanism of the present invention.

[0039] Fig.10 It is a schematic diagram of the hydraulic rod and pressure head structure of the present invention.

[0040] In the figure: 1, machine table; 2, guide frame; 3, guide roller; 4, elbow guide plate; 5, conveying gear; 6, outer block seat; 7, inner block seat; 8, support; 9, hydraulic rod; 10, lifting seat; 11, guide rail; 12, pressure head; 13, push plate; 14, limit seat; 15, spring rod; 16, electric push rod; 17, top plate; 18, top frame; 19, rotating plate; 20, rotating shaft; 21, torsion spring; 22, spring pin; 23, wedge block; 24, guide groove; 25, slide seat; 26, elastic member; 27, plug rod; 28, magnetic plate; 29, reset spring; 30, cone head; 31, pressure spring; 32, push head; 33, telescopic rod; 34, magnetic seat; 35, protective cover. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 10The present invention provides a technical solution: a plate chain straightening and cutting device, which can straighten and transport the plate chain to a fixed length, and cut it by applying pressure using a hydraulic mechanism.

[0043] The equipment takes the machine 1 as the main body, and installs the relevant power device and driving device. The top of the machine 1 is the working table, on which a straightening mechanism is arranged. A guide frame 2 is installed on the machine 1 in an arc arrangement to guide the plate chain so that it enters the working table from the storage device. Guide rollers 3 and elbow guide plates 4 are also installed on the working table, so that the plate chain can enter the restriction of the elbow guide plate 4 from the guide frame 2, and finally enter the cutting position through the guidance of the elbow guide plate 4. At the cutting position of the present invention, a channel is formed by the horizontal outer block seat 6 and the inner block seat 7, and at the elbow guide plate 4, a conveying gear 5 is rotatably installed. The conveying gear 5 is driven by a servo motor and can mesh with the plate chain to convey the plate chain when rotating, and the conveying gear 5 has the ability to count rotations. The length of the conveyed plate chain is calculated by the number of rotations, so that the part of the chain that needs to be cut is moved between the inner block seat 7 and the outer block seat 6 for hydraulic cutting.

[0044] A cutting mechanism is installed on the machine 1, and the cutting mechanism is above the inner block seat 7 and the outer block seat 6. The cutting mechanism includes a support 8, on which a hydraulic rod 9 and a guide rail 11 are fixedly installed. A lifting seat 10 is slidably installed on the guide rail 11, and the lifting seat 10 is lifted and driven by the hydraulic rod 9. At the same time, a pressure head 12 is fixedly installed on the bottom surface of the lifting seat 10. The pressure head 12 is a rod-type structure, which can press the pin shaft of the plate chain out through pressure and fall it under the machine 1 to complete the cutting work.

[0045] The machine 1 is also equipped with a pusher structure, which is integrated on the outer stopper 6. Under normal circumstances, the pusher structure can have a consistent guide plane with the outer stopper 6 to avoid affecting the conveying of the plate chain. After the cutting work is completed, it can act on the remaining chain parts to push them out of the chain conveying channel to carry out the next step of chain cutting. The pusher structure includes a limit seat 14 fixedly installed on the machine 1, a spring rod 15 is slidably installed in the limit seat 14, and a pusher plate 13 is fixedly connected to the end of the spring rod 15. The elastic force of the spring can make the pusher plate 13 fit on the limit seat 14. At this time, the pusher plate 13 can fill in the gap of the outer stopper 6 to ensure its limiting effect. The pusher structure also includes an electric push rod 16 installed on the machine 1. A top plate 17 is fixedly installed on the telescopic part of the electric push rod 16. The movement of the top plate 17 generates pressure on the pusher plate 13, so that it moves to push the remaining material.

[0046] A through hole for excess material is provided in the middle of the inner block seat 7. In order to prevent the through hole from affecting the limiting and guiding effect of the inner block seat 7, a rotating plate 19 is rotatably installed on the inner block seat 7 through a rotating shaft 20. A torsion spring 21 is installed on the rotating shaft 20. Through the action of the torsion spring 21, the rotating plate 19 can be kept in a vertical state. At this time, the rotating plate 19 can fill the through hole of the inner block seat 7. Furthermore, a spring pin 22 is also installed on the inner block seat 7. The spring pin 22 can be inserted into the positioning hole of the rotating shaft 20 to maintain the stability of the rotating shaft 20 and the rotating plate 19, so that it can have a limiting effect on the plate chain and ensure It cuts off accurately. At the same time, a wedge block 23 is installed on the side of the spring pin 22, and a top frame 18 is fixedly installed on the top plate 17. There is a certain gap between the top plate 17 and the push plate 13. When the top plate 17 moves, it first drives the top frame 18 to move. The top frame 18 can act on the wedge block 23, so that the wedge block 23 moves up, driving the spring pin 22 to be pulled out from the rotating shaft 20, so that the rotating plate 19 has mobility, and then the top plate 17 pushes the push plate 13, and the remaining material of the chain can make the rotating plate 19 rotate, thereby moving out from the through-port of the inner block seat 7, automatically clearing the conveying channel of the plate chain.

[0047] The inner stopper 7 of the present invention is also provided with a tensioning structure, which can generate the same pulling force from the cutting position to both sides of the plate chain conveyed between the inner stopper 7 and the outer stopper 6, so as to calibrate the cutting position so that the cutting position is located directly below the pressure head 12. The inner stopper 7 adopts a hollow structure, in which a guide groove 24 is provided, and the slide 25 is installed through the guide groove 24, and the slide 25 is limited by the elastic member 26 in the inner stopper 7. The slide 25 also adopts a hollow structure, in which a magnetic plate 28 is slidably installed, and a plunger 27 and a return spring 29 are fixedly connected to the magnetic plate 28. The plunger 27 can be retracted in the slide 25 by the elastic force of the return spring 29 to avoid affecting the conveying of the chain, and when the magnetic plate 28 is subjected to the magnetic force, the plunger 27 can be driven from the slide The slide 25 extends out from the seat 25, and the insertion rod 27 can be inserted into the gap of the plate chain, and two slide seats 25 are symmetrically arranged in the inner stop seat 7. The chain can be tensioned to both sides by the two insertion rods 27 inserted into the chain to keep it in a straightened state for straightening and cutting, and the tensioning of the insertion rod 27 can be carried out automatically. A cone head 30 is fixedly installed at the bottom of the magnetic plate 28, and the cone head 30 is located below the slide seat 25. At the same time, a pressure spring 31 is fixedly installed in the inner stop seat 7, and a push head 32 is fixedly installed at the end of the pressure spring 31. When the magnetic seat 34 drives the insertion rod 27 to extend, the cone head 30 can move to the position of the push head 32, and the cone head 30 is pushed sideways by the elastic force generated by the pressure spring 31, thereby causing the slide seat 25 to move sideways, so as to tension the chain to both sides through the insertion rod 27.

[0048] The movement of the insertion rod 27 is automatically controlled with the movement of the lifting seat 10 and the pressure head 12. The lifting seat 10 is fixedly connected to the downward telescopic rod 33. The telescopic rod 33 is an elastic telescopic part that can retract when under pressure. The bottom end of the telescopic rod 33 is fixedly installed with a magnetic seat 34. When the lifting seat 10 drives the pressure head 12 to cut, before it contacts the chain, the telescopic rod 33 first drives the magnetic seat 34 to move downward and moves it to the side of the inner stop seat 7. The magnetic seat 34 generates a magnetic repulsion force on the magnetic plate 28, thereby making the insertion rod 27 extend into the chain. Before the pressure head 12 performs the cutting work, the chain is first straightened to ensure that the cutting work is accurately carried out. The magnetic seat 34 can be blocked by the machine 1. At this time, the telescopic rod 33 can retract and will not affect the descent of the lifting seat 10.

[0049] The support 8 is equipped with a protective cover 35, which can shield the cutting position to prevent parts from splashing during cutting and protect the staff.

[0050] When the present invention is used, it is carried out according to the following steps:

[0051] 1. Guided feeding stage

[0052] Chain conveying: The plate chain enters the equipment from the storage device and is guided to the work surface through the arc guide frame 2. The chain direction is further constrained by the elbow guide plate 4 and the guide roller 3 to ensure that it enters the cutting station smoothly.

[0053] Length measurement:

[0054] The conveying gear 5 is driven by a servo motor to mesh with the chain and accurately convey the chain. The conveying length is calculated by the number of rotations to ensure that the cut-off part of the chain accurately moves to the cut-off position between the inner stop seat 7 and the outer stop seat 6.

[0055] 2. Straightening stage

[0056] Tensioning and straightening:

[0057] When the chain reaches the cutting position, the conveying stops, the lifting seat 10 descends, and the telescopic rod 33 at the bottom contacts the machine 1 first, driving the magnetic seat 34 to move downward. The magnetic seat 34 generates a magnetic repulsion force, pushing the magnetic plate 28 in the inner stop seat 7 to move, so that the insertion rod 27 extends and inserts into the gap of the chain. Under the action of the pressure spring 31, the two groups of insertion rods 27 arranged symmetrically pull the chain to both sides, eliminating bending deformation and ensuring accurate centering of the cutting position.

[0058] 3. Cutting off stage

[0059] Hydraulic pressure cut-off:

[0060] After the straightening is completed, the lifting seat 10 continues to descend, and the pressure head 12 applies pressure to the chain pin. The hydraulic rod 9 drives the pressure head 12 to press the pin out, and the chain is cut off in a tensioned state, and the cut is flat and without deformation.

[0061] 4. Residue cleaning stage

[0062] Pushing structure action:

[0063] The electric push rod 16 starts to push the top plate 17 to move. The top frame 18 on the top plate 17 first contacts the wedge block 23, so that the spring pin 22 is separated from the rotating shaft 20, and the lock on the rotating plate 19 is released. The remaining material pushes the rotating plate 19 to rotate and is discharged from the through port. At the same time, the top plate 17 continues to move forward, pushing the push plate 13 to push the remaining chain parts out of the conveying channel to ensure that the next section of the chain can enter smoothly.

[0064] Reset:

[0065] The electric push rod 16 retracts, the push plate 13 is reset under the action of the spring rod 15, the rotating plate 19 is pulled back to the vertical position by the torsion spring 21, and the spring pin 22 is re-locked to restore the guiding function.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate chain straightening and cutting device, comprising a machine platform, a straightening mechanism, a conveying mechanism and a cutting mechanism, characterized in that: The machine platform is provided with an arc-shaped guide frame, and an elbow guide plate and a cutting channel composed of an outer stop seat and an inner stop seat are installed on the machine platform. The elbow guide plate cooperates with the guide roller to guide the chain to turn and enter the cutting channel; The conveying mechanism includes a conveying gear driven by a servo motor, and the conveying gear conveys the chain to a cutting channel at a fixed length by rotating; The cutting mechanism includes a hydraulically driven lifting seat and a rod-type pressure head, the pressure head can be aligned with the chain pin, and the lifting seat is connected to a magnetic seat to drive the magnetic control component; The inner stopper is symmetrically provided with a tensioning structure, including a sliding seat that can slide laterally, in which a plunger is installed through a magnetic control component, and the plunger can be inserted into the gap of the chain before cutting and tensioned to both sides through a pressure spring to straighten the chain; The machine is also provided with a material pushing structure, including an electric push rod, a top plate and a rotating plate with linkage control. The rotating plate is kept in a vertical state by a torsion spring and locked by a spring pin. The top plate releases the spring pin through a wedge block and pushes the residual material to be discharged.

2. The plate chain straightening and cutting device according to claim 1, characterized in that: The inner stopper adopts a hollow structure, in which the slide seat is installed through a guide groove, and the slide seat is limited by an elastic member; The slide seat adopts a hollow structure, a magnetic plate is slidably installed in the slide seat, and an insertion rod and a return spring are fixedly connected to the magnetic plate, and the insertion rod is retracted into the slide seat by the elastic force of the return spring.

3. The plate chain straightening and cutting device according to claim 2, characterized in that: The magnetic seat can generate magnetic repulsion on the magnetic plate, and drive the plug rod to extend from the slide seat through the magnetic plate; Two slide seats are symmetrically arranged in the inner stop seat, and a cone head is fixedly installed at the bottom of the magnetic plate, and the cone head is located below the slide seat. The pressure spring is fixedly installed in the inner stop seat, and a push head is fixedly installed at the end of the pressure spring.

4. The plate chain straightening and cutting device according to claim 3 is characterized in that: The lifting seat is fixedly connected with a downward telescopic rod, and the telescopic rod is an elastic telescopic part. The bottom end of the telescopic rod is fixedly installed with a magnetic seat.

5. The plate chain straightening and cutting device according to claim 4, characterized in that: The pushing structure is arranged on the outer stop seat, and the pushing structure also includes a limit seat fixedly installed on the machine platform, a spring rod is slidably installed in the limit seat, and the end of the spring rod is fixedly connected to a pushing plate, so that the pushing plate is kept filled in the gap of the outer stop seat by elastic force.

6. The plate chain straightening and cutting device according to claim 5, characterized in that: The electric push rod is installed on the machine platform, and the top plate is fixedly installed on the telescopic part of the electric push rod. The movement of the top plate can generate pressure on the push plate, and the remaining material after the chain is cut off is pushed through the movement of the push plate.

7. The plate chain straightening and cutting device according to claim 6, characterized in that: The middle part of the inner stopper is provided with a through hole for the remaining material after cutting, and the rotating plate is rotatably installed in the through hole through a rotating shaft, and a torsion spring is installed on the rotating shaft.

8. The plate chain straightening and cutting device according to claim 7, characterized in that: A spring pin is movably installed on the inner stop seat, and the spring pin can be inserted into the positioning hole of the rotating shaft for limiting, and a wedge block is installed on the side of the spring pin.

9. The plate chain straightening and cutting device according to claim 8, characterized in that: A top frame is fixedly mounted on the top plate, and the wedge block is pushed upward by the top frame.

10. The plate chain straightening and cutting device according to claim 9, characterized in that: The cutting mechanism is located above the inner block seat and the outer block seat, and the cutting mechanism comprises a support, a hydraulic rod and a guide rail are fixedly mounted on the support, the lifting seat is slidably mounted on the guide rail, and the pressure head is mounted on the bottom surface of the lifting seat.

11. A production process for the plate chain straightening and cutting device according to claim 10, characterized in that: The production process includes the following steps: S1, feeding and fixed-length conveying, the chain is guided into the cutting channel by the arc guide frame and the elbow guide plate, the conveying gear engages the chain and measures the number of rotations, and the chain is conveyed to the cutting position between the inner block and the outer block at a fixed length; S2, magnetic control tensioning and straightening, the lifting seat descends, the magnetic control component is triggered by the telescopic rod, the insertion rod is inserted into the chain gap, and the chain is tensioned symmetrically on both sides by the pressure spring to eliminate bending deformation; S3, hydraulic cutting, after the straightening is completed, the hydraulic driving pressure head is aligned with the axis of the chain pin shaft and pressurized to press the pin shaft out to complete the cutting; S4, residual material cleaning, the electric push rod drives the top plate to move, lifts the wedge block to release the lock of the rotating plate by the spring pin, and the push plate pushes the residual material, which in turn pushes the rotating plate to rotate and open the through port to discharge the residual material.

Images