Classified recycling treatment device for new energy batteries

Abstract

The utility model relates to a new energy battery classification recovery processing device which comprises a material conveying unit, and a positioning guide conveying unit is connected with a discharging port of the material conveying unit. The clamping and dismounting unit is connected with a discharge hole of the positioning and guiding unit; the turning unit is arranged beside the clamping and dismounting unit and is used for cutting the waste battery shell; the material guiding unit is used for guiding out the cut battery shell and the cut battery cell, the turning unit is used for turning the waste battery shell, so that an annular notch is formed in the waste battery shell, the waste battery shell and the battery cell are separated, and the separated battery shell and the separated battery cell are respectively guided out through the material guiding unit; according to the treatment device, the shell of the cylindrical battery and the winding type battery cell can be detached and separated, the cylindrical battery can be classified and recycled in a targeted mode, and the pollution problem generated in the existing actual recycling process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery recycling, in particular to a new energy battery classification recycling and processing device. Background Art

[0002] With the widespread adoption of new energy batteries in the automotive market, recycling has been a major technical challenge plaguing the sector, requiring overcoming key technical challenges such as pollution. New energy batteries primarily include wound cells and laminated cells. Wound cells consist of a cylindrical structure consisting of electrode sheets and a separator wound together. Tabs and a cylindrical casing are located at each end of the wound cell. This structure is then packaged and filled with electrolyte to complete the wound cylindrical battery. For example, the dimensions of cylindrical cells, such as ternary lithium batteries, vary depending on their specifications. Common 18650 specifications have a diameter of 18 mm and a length of 65 mm, while 26650 specifications have a diameter of 26 mm and a length of 65 mm. Existing recycling processes for these cylindrical cells typically require crushing, pyrolysis, and sorting. Crushing involves disassembling batteries for subsequent processing. Pyrolysis primarily removes impurities such as separators and electrolytes from scrap batteries. Sorting primarily separates and collects mixed metals and raw materials such as graphite. After these processing steps, the useful materials in the scrap lithium batteries are separated and recovered. Recycled metal materials may include lithium, cobalt, and nickel. These metals can be used to produce new batteries or other products. In addition, organic compounds can be recovered for other industrial applications. Existing recycling of scrap battery cells requires pulverizing the entire cell and then chemically treating the pulverized material with chemicals. This leads to significant pollution issues when recovering metals from actual batteries, making actual battery recycling operations less targeted. Utility Model Content

[0003] The purpose of this utility model is to provide a new energy battery classification, recycling and processing device, which can disassemble and separate the outer shell and wound battery core of the cylindrical battery, and can classify and recycle the cylindrical batteries in a targeted manner, thereby reducing the pollution problems caused by existing actual recycling.

[0004] The following technical solutions are used to solve the technical problems in this utility model:

[0005] A new energy battery classification and recycling device, comprising

[0006] Material conveying unit, used to guide and arrange waste batteries;

[0007] A positioning and guiding unit is connected to the discharge port of the material conveying unit and is used to position and guide a single waste battery;

[0008] a clamping and disassembling unit, connected to the discharge port of the positioning and guiding unit, for clamping both ends of the waste battery and separating the shell and the battery cell of the waste battery;

[0009] A turning unit is provided beside the clamping and disassembling unit and is used to cut the waste battery shell so as to form an annular cutout on the waste battery shell;

[0010] The material guide unit is used to guide the cut battery casing and battery cells out.

[0011] The utility model also has the following technical features:

[0012] In one embodiment of the present invention, the material guiding unit includes at least a first discharge hopper and a second discharge hopper, the first discharge hopper is used to discharge the battery casing, and the second discharge hopper is used to discharge the battery cell.

[0013] In one embodiment of the present invention, the material conveying unit includes a vibrating plate, the discharge port of the vibrating plate is connected with the feed port of the discharge channel, the discharge port of the discharge channel is connected with the feed port of the feed hopper, the discharge port of the feed hopper is connected with the feed port of the guide slide, and the outlet of the guide slide is connected with the feed port of the positioning guide unit.

[0014] In one embodiment of the present invention, a channel is provided at the outlet position of the material guide slide, and the positioning and guiding unit includes a lower positioning slot plate and an upper positioning slot plate, the slots of the lower positioning slot plate and the upper positioning slot plate are V-shaped, and the area between the lower positioning slot plate and the upper positioning slot plate constitutes a slot cavity for accommodating the waste batteries, and the two ends of the waste batteries are combined with the slots of the lower positioning slot plate and the upper positioning slot plate, and the power unit drives the lower positioning slot plate and the upper positioning slot plate to move closer or farther away synchronously.

[0015] In one embodiment of the present invention, the lower positioning slot plate is vertically extended with a first rack, the upper positioning slot plate is vertically extended with a second rack, vertical rails are provided on the sides of the lower positioning slot plate and the upper positioning slot plate, and meshing teeth are rotatably provided on the vertical rails, and the meshing teeth are respectively engaged with the first rack and the second rack, the power unit includes a vertically arranged first driving cylinder, the piston rod of the first driving cylinder is connected to the upper positioning slot plate, the vertical rail is horizontally provided on a horizontal rail, and a second driving cylinder is provided at one end of the horizontal rail, the second driving cylinder is horizontal and the piston rod is connected to the vertical rail, and the second driving cylinder drives the vertical rail to be close to or away from the clamping and disassembly unit.

[0016] In one embodiment of the present invention, the clamping and disassembly unit includes a clamping manipulator arranged on both sides of the moving path of the positioning and guiding unit, the clamping manipulator is connected to the clamping drive unit, the clamping drive unit drives the clamping manipulator to clamp one end of the waste battery shell, the clamping drive unit is installed on the rotation drive unit, the rotation drive unit rotates the clamping manipulator, the rotation drive unit is installed on the horizontal sliding unit, the horizontal sliding unit drives the clamping manipulator horizontally and moves closer to or away from one end of the waste battery shell.

[0017] In one embodiment of the present utility model, the clamping robot includes an intermediate connecting arm, and the intermediate connecting arm is provided with multiple groups of clamping claws in the circumferential direction. One end of the clamping claw is hinged to the intermediate connecting arm, and the clamping drive unit includes a driving connecting rod hingedly arranged in the middle position of the clamping claw, and the other end of the driving connecting rod is hinged to one end of the pulling rod, and the pulling rod is horizontal and connected to the piston rod of the clamping cylinder.

[0018] In one embodiment of the present invention, the rotation drive unit includes a rotary motor, the pulling rod is rotationally connected to the piston rod of the clamping cylinder, the rotary motor is slidably installed on the horizontal sliding track through a slider, and the horizontal sliding unit includes a sliding nut arranged on the slider, a sliding screw is arranged in the sliding nut, and one end of the sliding screw is connected to the motor.

[0019] In one embodiment of the present invention, the turning unit includes a cutting head, the cutting head is mounted on a turning tool guide rod, the turning tool guide rod is arranged on a turning slider, the turning slider is slidably arranged on a turning track, a turning nut is provided on the turning tool guide rod, the turning nut cooperates with a turning screw, and the turning screw is connected to a turning motor.

[0020] In one embodiment of the present invention, a turning guide wheel is provided on the side of the cutting head, and the turning guide wheel is rotatably mounted on a guide arm. One end of the guide arm is hinged to the turning tool guide rod, and a torsion spring is provided at the hinged end of the guide arm.

[0021] Compared with the existing technology, the beneficial effects of the present invention are reflected in that: when the device recycles and processes waste batteries, it uses the material conveying unit to automatically arrange the waste batteries, so that the waste batteries are individually guided into the positioning and guiding unit, and the positioning and guiding unit is used to position the individual waste batteries and guide them into the clamping and disassembly unit, and the clamping and disassembly unit is used to clamp the two ends of the waste battery, and the turning unit is used to turn the shell of the waste battery so that a ring-shaped incision is formed on the shell of the waste battery, and the shell and the battery cell of the waste battery are separated, and the separated battery shell and battery cell are respectively guided out through the material guiding unit to realize the separation of the battery cell and the shell. The processing device can disassemble and separate the shell and the wound battery cell of the cylindrical battery, and can carry out classified recycling of the cylindrical batteries in a targeted manner, reducing the pollution problems caused by the existing actual recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 and Figure 2 They are schematic structural diagrams from two perspectives of a new energy battery classification, recycling and processing device in one embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of the new energy battery classification and recycling processing device in one embodiment of the present invention after the material conveying unit and the rack are removed;

[0024] Figure 4 This is a structural diagram of a frame and a conveyor belt of a new energy battery classification and recycling processing device in one embodiment of the present invention;

[0025] Figure 5 This is a structural diagram of a positioning and guiding unit in a new energy battery classification and recycling processing device in one embodiment of the present invention;

[0026] Figure 6 This is a structural schematic diagram from another perspective of the positioning and guiding unit in the new energy battery classification and recycling processing device in one embodiment of the present invention;

[0027] Figure 7 This is a structural diagram of a clamping and disassembly unit in a new energy battery classification and recycling processing device in one embodiment of the present invention;

[0028] Figure 8 It is a structural schematic diagram of a turning unit in a new energy battery classification, recycling and processing device in one embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0030] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0031] A new energy battery classification, recycling and processing device includes a material conveying unit 10, which is used to guide and arrange waste batteries; a positioning and guiding unit 20, which is connected to the discharge port of the material conveying unit 10 and is used to position and guide a single waste battery; a clamping and disassembly unit 30, which is connected to the discharge port of the positioning and guiding unit 20 and is used to clamp the two ends of the waste battery and separate the shell and battery cell of the waste battery; a turning unit 40, which is arranged next to the clamping and disassembly unit 30 and is used to cut the waste battery shell so that the waste battery shell forms an annular incision; a material guiding unit, which is used to guide the cut battery shell and battery cell.

[0032] In one embodiment, the material conveying unit 10 is capable of discharging and guiding the cylindrical waste batteries so that the cylindrical waste batteries are arranged one by one, which facilitates the subsequent clamping of the two ends of the cylindrical waste batteries to ensure the cutting of the battery shell.

[0033] In one embodiment, after the waste batteries are led into the clamping and disassembling unit 30 individually, the clamping and disassembling unit 30 can effectively clamp and position both ends of the cylindrical waste batteries.

[0034] In one embodiment, the turning unit 40 is arranged at the side of the clamping and disassembly unit 30. By rotating the cylindrical waste battery, an annular incision can be cut out of the shell of the waste battery, which is convenient for separating the shell of the waste battery from the battery cell to facilitate subsequent further processing.

[0035] In one embodiment, the material guiding unit includes at least a first discharge hopper 51 and a second discharge hopper 52 , wherein the first discharge hopper 51 is used to discharge the battery casing, and the second discharge hopper 52 is used to discharge the battery cell.

[0036] In one embodiment, the first discharge hopper 51 and the second discharge hopper 52 are arranged below the clamping and disassembly unit 30. When the clamping and disassembly unit 30 separates the shell and the battery cell of a single cylindrical waste battery, the shell falls into the first discharge hopper 51 and is discharged, and the battery cell falls into the second discharge hopper 52 and is discharged, which can reliably realize the disassembly and classification of the waste batteries.

[0037] In one embodiment, the first discharge hopper 51 and the second discharge hopper 52 are respectively located above the first conveyor belt 53 and the second conveyor belt 54, so that waste products removed from the waste batteries can be sorted.

[0038] In one embodiment, in order to arrange and guide the waste batteries, the material conveying unit 10 includes a vibration plate 11, the discharge port of the vibration plate 11 is connected with the feed port of the discharge channel 12, the discharge port of the discharge channel 12 is connected with the feed port of the feed hopper 13, the discharge port of the feed hopper 13 is connected with the feed port of the guide chute 14, and the outlet of the guide chute 14 is connected with the feed port of the positioning and guiding unit 20.

[0039] In one embodiment, the vibration plate 11 can implement a vibration arrangement for the waste batteries so that the waste batteries are discharged into the discharge channel 12, and the waste batteries are discharged into the feed hopper 13 in an arranged manner, and are introduced into the guide chute 14 through the feed hopper 13, and then discharged to the feed port position of the positioning guide unit 20 for the next step of processing.

[0040] In one embodiment, in order to implement the positioning of the waste batteries and accurately find the center of the waste batteries, a channel is provided at the outlet position of the guide slide 14, and the positioning and guiding unit 20 includes a lower positioning slot plate 21 and an upper positioning slot plate 22. The slots of the lower positioning slot plate 21 and the upper positioning slot plate 22 are "V"-shaped. The area between the lower positioning slot plate 21 and the upper positioning slot plate 22 constitutes a slot cavity for accommodating the waste batteries. The two ends of the waste batteries are combined with the slots of the lower positioning slot plate 21 and the upper positioning slot plate 22. The power unit drives the lower positioning slot plate 21 and the upper positioning slot plate 22 to move closer or farther away synchronously.

[0041] In one embodiment, after the waste batteries are guided to the discharge port of the guide chute 14 in a single arrangement, the power unit is started to synchronize the lower positioning slot plate 21 and the upper positioning slot plate 22 to approach each other. The slots of the lower positioning slot plate 21 and the upper positioning slot plate 22 can be used to effectively find the center of the waste battery, so that the two ends of the waste battery can be clamped by the clamping and disassembly unit 30, thereby ensuring the reliability of the positioning of the two ends of the shell of the waste battery.

[0042] In one embodiment, the lower positioning slot plate 21 vertically extends with a first rack 211, and the upper positioning slot plate 22 vertically extends with a second rack 221. A vertical track 23 is provided on the sides of the lower positioning slot plate 21 and the upper positioning slot plate 22. The vertical track 23 is rotatably provided with meshing teeth 24, and the meshing teeth 24 are respectively engaged with the first rack 211 and the second rack 221. The power unit includes a vertically arranged first driving cylinder 25, and the piston rod of the first driving cylinder 25 is connected to the upper positioning slot plate 22. The vertical track 23 is horizontally provided with a horizontal track 26, and a second driving cylinder 27 is provided at one end of the horizontal track 26. The second driving cylinder 27 is horizontal and the piston rod is connected to the vertical track 23. The second driving cylinder 27 drives the vertical track 23 to be close to or away from the clamping and disassembly unit 30.

[0043] In one embodiment, by starting the first driving cylinder 25, the upper positioning slot plate 22 moves downward, and the meshing teeth 24 are rotated by the second rack 221, and the first rack 211 is linked, and then the lower positioning slot plate 21 and the upper positioning slot plate 22 are linked to slide on the vertical track 23, thereby realizing the positioning of the waste battery, so as to accurately find the center of the waste battery and ensure that the subsequent clamping and disassembly unit 30 can effectively implement the positioning and clamping of the two ends of the waste battery.

[0044] In one embodiment, the clamping and disassembly unit 30 includes a clamping robot 31 arranged on both sides of the moving path of the positioning and guiding unit 20, and the clamping robot 31 is connected to the clamping drive unit, and the clamping drive unit drives the clamping robot 31 to clamp one end of the waste battery shell. The clamping drive unit is installed on a rotation drive unit, and the rotation drive unit rotates the clamping robot 31. The rotation drive unit is installed on a horizontal sliding unit, and the horizontal sliding unit drives the clamping robot 31 horizontally and moves closer to or away from one end of the waste battery shell.

[0045] In one embodiment, when disassembling the waste battery, the second driving cylinder 27 of the positioning and guiding unit 20 is started to guide the positioned waste battery to the position of the clamping and disassembly unit 30, and the horizontal sliding unit is started to make the clamping manipulator 31 move horizontally toward each other and clamp the two ends of the waste battery. The rotation driving unit is started to rotate the clamping manipulator 31, and then the waste battery is rotated. The turning unit 40 can cut an annular opening on the rotating waste battery shell. By starting the horizontal sliding unit, the two clamping manipulators 31 are separated, so that the shell of the waste battery is separated from the battery cell, completing the disassembly of the single waste battery, and then the shell and the battery cell of the waste battery are respectively guided out through the first discharge hopper 51 and the second discharge hopper 52.

[0046] In one embodiment, only one group of the first discharge hopper 51 is provided, and the battery shells on one group of the clamping robots 31 can directly fall onto the first discharge hopper 51 and be discharged, and the battery shells on the other group can be moved toward each other by the clamping robots 31 to receive half of the shells on the clamping robots 31, completing the "hand-to-hand" material receiving operation and discharging the waste shells.

[0047] In one embodiment, in order to clamp the two ends of the battery shell, the clamping robot 31 includes an intermediate connecting arm 311, and the intermediate connecting arm 311 is provided with multiple groups of clamping claws 312 in the circumferential direction. One end of the clamping claw 312 is hinged to the intermediate connecting arm 311, and the clamping drive unit includes a driving connecting rod 313 hingedly arranged in the middle position of the clamping claw 312, and the other end of the driving connecting rod 313 is hinged to one end of the pulling rod 314, and the pulling rod 314 is horizontal and connected to the piston rod of the clamping cylinder 315.

[0048] In one embodiment, in order to rotate the waste battery so that an annular groove is formed in the waste battery shell, the rotation drive unit includes a rotation motor 32. In order not to interfere with the clamping action of the battery shell, the pulling rod 314 is rotationally connected to the piston rod of the clamping cylinder 315.

[0049] In one embodiment, in order to clamp the two ends of the waste battery shell, the rotating motor 32 is slidably installed on the horizontal sliding track 33 through a slider. The horizontal sliding unit includes a sliding nut arranged on the slider, and a sliding screw is arranged in the sliding nut. One end of the sliding screw is connected to the motor 34.

[0050] In one embodiment, the turning unit 40 includes a cutting head 41, the cutting head 41 is mounted on a turning tool guide rod 42, the turning tool guide rod 42 is arranged on a turning slider, the turning slider is slidably arranged on a turning track 43, a turning nut is provided on the turning tool guide rod 42, the turning nut cooperates with the turning screw, and the turning screw is connected to the turning motor 44.

[0051] In one embodiment, a turning guide wheel 45 is provided beside the cutting head 41. The turning guide wheel 45 is rotatably mounted on a guide arm. One end of the guide arm is hinged to the turning tool guide rod 42. A torsion spring is provided at the hinged end of the guide arm.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0053] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A new energy battery classification and recycling device, characterized by: include A material conveying unit (10) is used to guide and arrange waste batteries; A positioning and guiding unit (20) is connected to the discharge port of the material conveying unit (10) and is used to position and guide a single waste battery; A clamping and disassembling unit (30) is connected to the discharge port of the positioning and guiding unit (20) and is used to clamp the two ends of the waste battery and separate the shell and the battery core of the waste battery; A turning unit (40) is provided beside the clamping and disassembling unit (30) and is used to cut the waste battery shell so as to form an annular cutout on the waste battery shell; The material guide unit is used to guide the cut battery casing and battery cells.

2. The new energy battery classification and recycling device according to claim 1 is characterized in that: The material guiding unit comprises at least a first discharge hopper (51) and a second discharge hopper (52), wherein the first discharge hopper (51) is used to guide out the battery casing, and the second discharge hopper (52) is used to guide out the battery core.

3. The new energy battery classification and recycling device according to claim 1 is characterized in that: The material conveying unit (10) includes a vibrating plate (11), the discharge port of the vibrating plate (11) is connected to the feed port of the discharge channel (12), the discharge port of the discharge channel (12) is connected to the feed port of the feed hopper (13), the discharge port of the feed hopper (13) is connected to the feed port of the guide chute (14), and the outlet of the guide chute (14) is connected to the feed port of the positioning guide unit (20).

4. The new energy battery classification and recycling device according to claim 3 is characterized by: A channel is provided at the outlet of the guide slideway (14), and the positioning and guiding unit (20) comprises a lower positioning slot plate (21) and an upper positioning slot plate (22), wherein the slots of the lower positioning slot plate (21) and the upper positioning slot plate (22) are V-shaped, and the area between the lower positioning slot plate (21) and the upper positioning slot plate (22) constitutes a slot cavity for accommodating the waste battery, and the two ends of the waste battery are combined with the slots of the lower positioning slot plate (21) and the upper positioning slot plate (22), and a power unit drives the lower positioning slot plate (21) and the upper positioning slot plate (22) to move closer to or farther away from each other synchronously.

5. The new energy battery classification and recycling device according to claim 4 is characterized in that: The lower positioning slot plate (21) is vertically extended with a first rack (211), the upper positioning slot plate (22) is vertically extended with a second rack (221), vertical rails (23) are provided on the sides of the lower positioning slot plate (21) and the upper positioning slot plate (22), and meshing teeth (24) are rotatably provided on the vertical rails (23), and the meshing teeth (24) are respectively meshed with the first rack (211) and the second rack (221), and the power unit includes a vertically arranged first rack (211) and a second rack (221). A driving cylinder (25), wherein the piston rod of the first driving cylinder (25) is connected to the upper positioning slot plate (22), the vertical track (23) is horizontally arranged on a horizontal track (26), and a second driving cylinder (27) is arranged at one end of the horizontal track (26), the second driving cylinder (27) is horizontal and the piston rod is connected to the vertical track (23), and the second driving cylinder (27) drives the vertical track (23) to be located close to or away from the clamping and disassembly unit (30).

6. The new energy battery classification and recycling device according to claim 5 is characterized in that: The clamping and disassembling unit (30) includes a clamping manipulator (31) arranged on both sides of the moving path of the positioning and guiding unit (20), the clamping manipulator (31) is connected to a clamping drive unit, the clamping drive unit drives the clamping manipulator (31) to clamp one end of the waste battery shell, the clamping drive unit is installed on a rotation drive unit, the rotation drive unit rotates the clamping manipulator (31), and the rotation drive unit is installed on a horizontal sliding unit, the horizontal sliding unit drives the clamping manipulator (31) horizontally and moves closer to or farther away from one end of the waste battery shell.

7. The new energy battery classification and recycling device according to claim 6 is characterized in that: The clamping manipulator (31) includes an intermediate connecting arm (311), and the intermediate connecting arm (311) is provided with multiple groups of clamping claws (312) in the circumferential direction. One end of the clamping claw (312) is hinged to the intermediate connecting arm (311). The clamping drive unit includes a driving connecting rod (313) hingedly arranged at the middle position of the clamping claw (312), and the other end of the driving connecting rod (313) is hinged to one end of a pulling rod (314). The pulling rod (314) is horizontal and connected to the piston rod of the clamping cylinder (315).

8. The new energy battery classification and recycling device according to claim 7 is characterized in that: The rotary drive unit includes a rotary motor (32), the pulling rod (314) is rotationally connected to the piston rod of the clamping cylinder (315), the rotary motor (32) is slidably mounted on a horizontal sliding track (33) via a slider, and the horizontal sliding unit includes a sliding nut arranged on the slider, a sliding screw is arranged in the sliding nut, and one end of the sliding screw is connected to the motor (34).

9. The new energy battery classification and recycling device according to claim 1, characterized in that: The turning unit (40) comprises a cutting head (41), the cutting head (41) being mounted on a turning tool guide rod (42), the turning tool guide rod (42) being arranged on a turning slide, the turning slide being slidably arranged on a turning track (43), a turning nut being arranged on the turning tool guide rod (42), the turning nut being matched with a turning screw, and the turning screw being connected to a turning motor (44).

10. The new energy battery classification and recycling device according to claim 9, characterized in that: A turning guide wheel (45) is provided on the side of the cutting tool head (41), and the turning guide wheel (45) is rotatably mounted on a guide arm. One end of the guide arm is hinged to the turning tool guide rod (42), and a torsion spring is provided at the hinged end of the guide arm.

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