A stripping device for cable recycling

Abstract

The present invention discloses a stripping device for cable recycling, which belongs to the technical field of cable recycling, and includes a plurality of crushing cylinders, a motor gear set and a plurality of crushing knives. The plurality of crushing cylinders are arranged along the direction of travel of the cable, and the crushing cylinder includes a frame and a rotating shaft. The rotating shaft is rotatably connected to the inner ring of the frame, and the motor gear set is transmission-connected to the plurality of rotating shafts. The plurality of crushing knives are arranged circumferentially along the inner ring of the rotating shaft, and a plurality of ultrasonic cutting knives are arranged at the front end of the crushing knives. The ultrasonic cutting knives crush the outer rubber of the cable by the ultrasonic principle, without considering the insufficient strength and wear effects caused by the use of traditional blades. The rotation of the rotating shaft drives the plurality of ultrasonic cutting knives to operate continuously, so as to achieve a large-area continuous crushing effect of the rubber and to cause it to fall off. And by controlling the parameters of the ultrasonic cutting knives on the plurality of crushing cylinders, the crushing thickness can be continuously deepened, and the crushing depth can be precisely controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of cable recycling, in particular to a stripping device for cable recycling processing. Background Art

[0002] Cables are important carriers of modern power and communication transmission. With the advancement of technology and the upgrading of equipment, a large number of waste cables are gradually being eliminated. Waste cables contain a large amount of metals and plastics. If they are not treated, they will cause serious pollution to the environment. Cables contain a large amount of high-value metals such as copper and aluminum. By recycling waste cables, we can not only save resources, but also reduce dependence on mineral resources and reduce the environmental impact of mining and smelting.

[0003] Mechanical recycling is one of the most commonly used cable recycling methods. Commonly used mechanical recycling equipment includes shears, pulverizers, separators, etc. This method mainly uses mechanical equipment to cut the cable into pieces, and then separates the cable core and insulation layer through physical sorting technology. The cable core is mainly copper core, and other metal and non-metal materials are also included depending on the purpose of the cable.

[0004] The pulverizer pulverizes the entire cable and separates the outer rubber fragments from the inner cable core powder through separation equipment for recycling. However, excessive pulverization of the cable core can easily lead to oxidation of the copper material, reducing the recycling value of the copper material. It is difficult to separate copper from other substances in the pulverized cable core, which increases the difficulty of reprocessing. In addition, it is difficult to separate the pulverized rubber and copper powder, and the purity of the separated copper is low, and the recovery rate is not high.

[0005] The shearing machine is a device that uses a blade to cut the cable rubber in a certain direction to expose the internal cable core to separate the cable core from the rubber. However, this device requires manual advancement of the cable, especially for large-diameter cables. After the cable is cut, the rubber still needs to be peeled off the cable core manually, which is a cumbersome process. In addition, with the continuous emergence of special cables, the cable diameter has increased, and the thickness and strength of the rubber layer that matches it have also continued to increase, which places higher and higher requirements on the blade used for cutting. The blade needs to increase in length or outer diameter to adapt to the thickness of the rubber, and the blade needs to have higher strength to prevent breakage or wear, which significantly increases the cost of use. Summary of the invention

[0006] The object of the present invention is to provide a cable stripping device for cable recycling processing to solve the problems raised in the above-mentioned prior art.

[0007] Provided is a cable stripping device for cable recycling processing, comprising:

[0008] A plurality of crushing barrels, wherein the crushing barrels are arranged along the traveling direction of the cable, and the crushing barrels include a frame and a rotating shaft, wherein the rotating shaft is rotatably connected to the inner ring of the frame;

[0009] A motor gear set, wherein the motor gear set is drivingly connected to a plurality of rotating shafts;

[0010] A plurality of crushing knives are arranged along the circumference of the inner ring of the rotating shaft, and a plurality of ultrasonic cutting knives are arranged at the front end of the crushing knives.

[0011] As a further embodiment of the present invention: the crushing knife includes a fixed sleeve and a telescopic inner shaft, the telescopic inner shaft is slidably connected to the fixed sleeve, and the blade body of the plurality of ultrasonic cutting knives is arranged inside the telescopic inner shaft and the blade head is located outside the telescopic inner shaft. By sliding the telescopic inner shaft in the fixed sleeve, the action range of the ultrasonic cutting knives arranged circumferentially on the inner ring of the rotating shaft can be controlled, and thus the crushing form of the cable can be flexibly selected.

[0012] As a further embodiment of the present invention: the crushing knife also includes a drive shaft and a coupling, the coupling is rotatably connected to the crushing knife, and several of the ultrasonic cutting knives are connected to the drive shaft of the actuator through the coupling, and several of the ultrasonic cutting knives can be driven by the drive shaft to rotate around the central axis of the crushing knife. The coupling is used to fix several ultrasonic cutting knives together so that the drive shaft acts on several ultrasonic cutting knives at the same time through the coupling. The drive shaft is driven to rotate by the actuator, and the actuator can be set inside the crushing knife or inside the rotating shaft. Through this structure, several ultrasonic cutting knives can be used to crush the outer layer of the cable in a rotating state, thereby increasing the area of ​​action and improving the crushing efficiency.

[0013] As a further embodiment of the present invention: the central axis of the plurality of ultrasonic cutting knives and the crushing knives forms an angle of β degrees, and the angle β is 0° to 30°. The plurality of ultrasonic cutting knives are spaced apart from each other relative to the central axis of the coupling, and the crushing range of a single crushing knife can be increased and the crushing efficiency can be improved while ensuring that the blade head of the ultrasonic cutting knife does not interfere with the surrounding limiting structure.

[0014] As a further embodiment of the present invention: the central axes of the plurality of ultrasonic cutting knives and the crushing knives form an angle of β degrees, and the angle β is 5° to 15°, thereby increasing the action range of the ultrasonic cutting knives and reducing the additional stress of the ultrasonic cutting knives.

[0015] As a further embodiment of the present invention: a ball joint connection structure is formed between the coupling and the crushing knife, the driving shaft includes a connecting shaft and an eccentric shaft, the connecting shaft is connected to the actuator and can complete rotation and translation movements on the driving rotation center of the actuator, one end of the eccentric shaft is hinged to the connecting shaft, and the other end of the eccentric shaft and the coupling have a rotational freedom in a direction away from one of the ultrasonic cutting knives.

[0016] The ball joint connection structure not only enables the coupling to rotate around the central axis of the crushing knife, but also enables the coupling to rotate in the radial direction of the crushing knife. When the crushing knife performs normal rotational crushing work, the connecting shaft retreats to one end of the actuator, and the connecting shaft and the eccentric shaft are in a coaxial or approximately coaxial state, and the coupling is driven to rotate around the central axis through the transmission of the eccentric shaft. When the crushing knife performs unidirectional cutting work, it is necessary to adjust the central axis of one of the ultrasonic cutting knives on the crushing knife to be coaxial or approximately coaxial with the connecting shaft, so that the ultrasonic cutting knife can cut the cable in a vertical or approximately vertical state, thereby improving the rationality of the force. At this time, the connecting shaft can cause the eccentric shaft to rotate around the connecting shaft through a forward motion. Under the interference of the eccentric shaft, the coupling rotates relative to the eccentric shaft, so that the ultrasonic cutting knife can rotate to a certain angle around a specific direction to complete the state change.

[0017] As a further embodiment of the present invention: an angle of α is formed between the eccentric shaft and the connecting shaft, and the angle α is 1° to 3°. When the connecting shaft moves forward relative to the eccentric shaft, in order to ensure that the eccentric shaft can rotate around a specific direction under the action of the hinge, a certain angle can be formed between the connecting shaft and the eccentric shaft, so that the eccentric shaft has a tendency to rotate in a specific direction, thereby preventing structural interference.

[0018] As a further embodiment of the present invention: the coupling and the eccentric shaft are hinged to form a hinge joint, and the hinge joint has a rotational freedom in one direction. The hinge joint is a hinge structure, which can transmit the torque from the eccentric shaft to the coupling. Under normal conditions, the hinge has rotational freedom in two directions, and a limit structure can be set between the coupling and the eccentric shaft to ensure that both have only one rotational freedom.

[0019] As a further embodiment of the present invention: a ball joint is provided at the end of the eccentric shaft, and a plurality of keys are provided on the periphery of the ball joint. The ball joint is spline-connected to the coupling and has a degree of freedom of rotation in one of the key directions. The ball joint can transmit the torque of the eccentric shaft to the coupling through the key. At the same time, since the ball joint and the key and the coupling are in an arc-shaped contact structure, the ball joint can rotate radially relative to the coupling in the arc direction of the key, and the limiting structure can ensure that the coupling and the eccentric shaft have only one degree of freedom of rotation in one direction.

[0020] As a further embodiment of the present invention: both ends of the inner ring of the rotating shaft are chamfered, and a certain distance is set between the plurality of crushing barrels to form a material drop zone. The chamfer can guide the crushed rubber toward the material drop zone to prevent waste from accumulating on the rotating shaft and affecting the operation of the ultrasonic cutter. A material drop zone is formed between each crushing barrel to prevent waste from accumulating between two adjacent crushing barrels.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The ultrasonic cutter cuts and crushes the outer rubber of the cable through the principle of ultrasonic vibration. There is no need to consider the insufficient strength and wear caused by the use of traditional blades, which increases the service life of the cutter head. The rotation of the rotating shaft drives several ultrasonic cutters to work continuously. On the basis of reducing the volume of the blades, the rubber can be continuously crushed and removed over a large area, avoiding the need for manual peeling operations. And by controlling the parameters of the ultrasonic cutters on several crushing barrels, the crushing thickness can be continuously deepened, and the crushing depth can be precisely controlled, which can reduce the damage to the internal cable core and maintain the integrity of the cable core to the greatest extent. The stripping device provided by the present invention has a good stripping effect on cables, and is particularly suitable for cables with large diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of a stripping device for cable recycling;

[0025] Figure 2 for Figure 1 A magnified image of area A;

[0026] Figure 3 A schematic diagram of the structure of the crushing knife provided by the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of Example 5 of the present invention.

[0029] In the figure: 1. crushing cylinder; 11. frame; 12. rotating shaft; 121. chamfer; 2. motor gear set; 3. crushing knife; 31. ultrasonic cutting knife; 32. fixing sleeve; 33. telescopic inner shaft; 34. driving shaft; 341. connecting shaft; 342. eccentric shaft; 3421. ball joint; 3422. key; 35. coupling. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0031] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as the content disclosed in this application is insufficient.

[0032] However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0033] See also Figure 1-2 As shown, the cable recycling and processing stripping device in the embodiment of the present invention comprises a plurality of crushing drums 1, a motor gear set 2 and a plurality of crushing knives 3. The plurality of crushing drums 1 are arranged along the traveling direction of the cable. The crushing drum 1 comprises a frame 11 and a rotating shaft 12. The rotating shaft 12 is rotatably connected to the inner ring of the frame 11. The motor gear set 2 is transmission-connected to the plurality of rotating shafts 12. The plurality of crushing knives 3 are circumferentially arranged along the inner ring of the rotating shaft 12. The front end of the crushing knife 3 is provided with a plurality of ultrasonic cutting knives 31.

[0034] Several crushing barrels 1 are arranged along the conveying direction of the cable, and the continuous area formed inside is the crushing zone, which crushes the outer sheath of the cable. Roller brackets are set at both ends of the crushing zone to actively convey the cable, avoiding the need to manually push the cable. The motor gear set 2 includes a driving motor and a gear set. The driving direction of the driving motor is changed by the gear set so that each rotating shaft 12 can rotate inside the frame 11. A reducer can also be set in the motor gear set 2 to control the rotation speed of each rotating shaft 12 separately to achieve different crushing effects. When the cable enters the crushing barrel 1 through the conveyance of the roller bracket, the rotating shaft 12 drives the several crushing knives 3 to rotate and contact the cable. The crushing knife 3 crushes the surface of the cable through several ultrasonic cutting knives 31.

[0035] The ultrasonic cutting knife 31 cuts the surface of the workpiece through the combined action of ultrasonic vibration and mechanical pressure. Specifically, the blade device of the ultrasonic cutting knife 31 contains an ultrasonic transducer, which converts electrical energy into high-frequency mechanical vibration through electromagnetic or piezoelectric effect. On the basis of ultrasonic vibration, the blade tool applies a certain mechanical pressure to cause the surface of the workpiece to undergo plastic deformation under the combined action of vibration and pressure. Ultrasonic vibration reduces the friction between the tool and the material, reduces the force required during the cutting process, and prolongs the life of the tool. Due to the high-frequency and low-amplitude characteristics of the vibration, ultrasonic cutting can achieve high-precision cutting operations. When the ultrasonic cutting knife 31 cuts to the cable core, it can stop in time to reduce damage to the cable core. Since the structural working principle of the ultrasonic cutting knife 31 is a conventional technical means, the specific structure of the ultrasonic cutting knife 31 will not be described in detail here.

[0036] See also Figure 1 and Figure 2 As shown, the crushing knife 3 includes a fixed sleeve 32 and a telescopic inner shaft 33. The fixed sleeve 32 has a driving function for executing the guide rail and can drive the telescopic inner shaft 33 to slide inside the fixed sleeve 32. The blade body parts of the three ultrasonic cutting knives 31 are arranged inside the telescopic inner shaft 33 and the blade head parts are located outside the telescopic inner shaft 33. When the crushing knife 3 rotates driven by the rotating shaft 12, the ultrasonic cutting knife 31 can be driven to extend and retract through the fixed sleeve 32 and the telescopic inner shaft 33, thereby expanding the range of action of a single crushing knife 3.

[0037] Since the ultrasonic cutter 31 is small in size, a single crushing cannot penetrate the entire thickness range of the rubber. Therefore, through the rotation of the rotating shaft 12 and the expansion and contraction of the telescopic inner shaft 33, a single ultrasonic cutter 31 can repeatedly process part of the cable area, gradually deepening the processing depth. Or a crushing gradient is formed in the direction of several crushing barrels 1, and the processing depth is gradually deepened along the direction of several crushing barrels 1. Or the two crushing schemes are combined, while the crushing depth steps are formed in the direction of several crushing barrels 1, each crushing barrel 1 performs multiple rounds of crushing processing on a specific part of the cable until the cable exposes the bottom cable core structure. Through the expansion and contraction of the telescopic inner shaft 33, it can also adapt to cables with different initial diameters, improving the versatility of the equipment.

[0038] See also Figure 1 and Figure 3 As shown, the crushing knife 3 also includes a drive shaft 34 and a coupling 35. The drive shaft 34 is connected to an actuator, and the actuator can complete the rotation action and drive the coupling 35 to rotate synchronously. The actuator can be directly arranged inside the crushing knife 3, or inside the rotating shaft 12. The coupling 35 can rotate inside the crushing knife 3, and a plurality of ultrasonic cutting knives 31 are connected to the drive shaft 34 through the coupling 35. The plurality of ultrasonic cutting knives 31 can rotate around the central axis of the crushing knife 3 through the drive shaft 34.

[0039] Through this structure, the ultrasonic cutting knife 31 can rotate relative to the central axis of the crushing knife 3 under the drive of the driving shaft 34, and the coupling 35 is used to fix the plurality of ultrasonic cutting knives 31 as a whole, so that the driving shaft 34 can synchronously drive the plurality of ultrasonic cutting knives 31 at the same time. The coupling 35 also plays a sealing role to prevent the waste materials and metal debris after crushing from entering the crushing knife 3. The action range of a single ultrasonic cutting knife 31 is small, while multiple ultrasonic cutting knives 31 can form a certain range of crushing and cutting areas by rotating, so that the action range is increased, and the number of ultrasonic cutting knives 31 is preferably three.

[0040] See also Figure 1-Figure 3 As shown, this solution integrates the solution with a fixed sleeve 32 and a telescopic inner shaft 33 and the solution with a driving shaft 34 and a coupling 35, so that the crushing knife 3 has the telescopic function and also has the function of rotating several ultrasonic cutting knives 31, thereby maximizing the crushing and cutting effect.

[0041] Specifically, a plurality of ultrasonic cutting knives 31 are fixed on the coupling 35. The fixed sleeve 32 has a driving function for executing the guide rail, and can drive the telescopic inner shaft 33 to slide inside the fixed sleeve 32. The coupling 35 is rotatably connected to the telescopic inner shaft 33. The driving shaft 34 is connected to the actuator, and the actuator can complete the rotation and translation action on the driving rotation center of the actuator. The actuator can be directly set inside the telescopic inner shaft 33, or set inside the rotating shaft 12, and the driving shaft 34 is movably passed through the telescopic inner shaft 33 and connected to the coupling 35.

[0042] The ultrasonic cutting blade 31 can rotate relative to the central axis of the crushing blade 3 under the drive of the driving shaft 34. When the actuator is arranged inside the rotating shaft 12 and the telescopic inner shaft 33 is extended, the driving shaft 34 can extend relative to the actuator while rotating to adapt to the extension length of the telescopic inner shaft 33. Through this structure, the crushing blade 3 has both the rotating and telescopic functions.

[0043] For further information, see Figure 1 and Figure 3 As shown, a plurality of ultrasonic cutting knives 31 and the central axis of the crushing knife 3 form an angle of β degrees, and the angle β is 0° to 30°. The blade heads of the plurality of ultrasonic cutting knives 31 are spaced apart from each other relative to the central axis of the coupling 35. Under the condition that the blade heads of the ultrasonic cutting knives 31 do not interfere with the surrounding limiting structures, the crushing range of a single crushing knife 3 can be increased by rotation, thereby improving the crushing efficiency. The inclination angle of the ultrasonic cutting knives 31 cannot be too large. If it is too large, it will increase the action angle between the ultrasonic cutting knives 31 and the cable, subjecting the ultrasonic cutting knives 31 to excessive local stress and additional stress, thus affecting the service life of the ultrasonic cutting knives 31.

[0044] For further information, see Figure 1 and Figure 4 As shown, the coupling 35 and the crushing blade 3 are connected by a ball joint structure, so that the coupling 35 and the crushing blade 3 can rotate relative to each other in the axial direction and in the radial direction. The driving shaft 34 includes a connecting shaft 341 and an eccentric shaft 342. The connecting shaft 341 is connected to the actuator and can complete the rotation and translation action on the driving rotation center of the actuator. One end of the eccentric shaft 342 is hinged to the connecting shaft 341, and the other end of the eccentric shaft 342 and the coupling 35 have a rotational freedom in a direction away from one of the ultrasonic cutting blades 31.

[0045] When the connecting shaft 341 translates to the end of the stroke at one end of the actuator, the connecting shaft 341 and the eccentric shaft 342 are coaxial or approximately coaxial. In this state, the connecting shaft 341 drives the eccentric shaft 342 and then drives the coupling 35 to rotate, so that the plurality of ultrasonic cutting knives 31 rotate and work. At this time, the crushing knife 3 is in a crushing state.

[0046] In some cases, it is necessary to perform directional cutting or circumferential cutting on the cable. At this time, the connecting shaft 341 extends a certain distance relative to the actuator and stops rotating. The eccentric shaft 342 rotates a certain angle relative to the connecting shaft 341 under the interference of the coupling 35, and the coupling 35 also rotates a certain angle under the action of the eccentric shaft 342, so that one of the ultrasonic cutting knives 31 is rotated to a state coaxial or approximately coaxial with the connecting shaft 341. At this time, except for the ultrasonic cutting knives 31 located at the axis of the connecting shaft 341, the other ultrasonic cutting knives 31 are separated from the working surface. Through the movement of the cable and the rotation of the rotating shaft 12, the ultrasonic cutting knives 31 at the axis can perform axial cutting or circumferential cutting on the cable sheath.

[0047] Furthermore, an angle of α is formed between the eccentric shaft 342 and the connecting shaft 341, and the angle α is 1° to 3°. When the connecting shaft 341 moves forward relative to the eccentric shaft 342, in order to ensure that the eccentric shaft 342 can rotate around a specific direction under the action of the hinge, a certain angle can be formed between the connecting shaft 341 and the eccentric shaft 342, so that the eccentric shaft 342 has a tendency to rotate in a specific direction to prevent structural interference. When the eccentric shaft 342 is slightly eccentric and transmits torque to the coupling 35, the coupling 35 will also rotate slightly eccentrically. Therefore, the angle α cannot be too large to reduce the impact of the eccentric rotation on the ultrasonic cutting knife 31, and the angle α cannot be too small, so that the eccentric shaft 342 can have sufficient rotation tendency to rotate in a specific direction.

[0048] See also Figure 4 As shown, in this solution, the coupling 35 and the eccentric shaft 342 are hinged to form a hinge joint, and the hinge joint has a rotational freedom in one direction. The hinge joint is a hinge structure, which can transmit the torque from the eccentric shaft 342 to the coupling 35. Under normal conditions, the hinge has rotational freedom in two directions, and a limiting structure can be set between the coupling 35 and the eccentric shaft 342 to ensure that the two have only one rotational freedom.

[0049] See also Figure 5 As shown, in this scheme, a ball joint 3421 is provided at the end of the eccentric shaft 342, and a plurality of keys 3422 are provided on the periphery of the ball joint 3421. The ball joint 3421 is spline-connected with the coupling 35 and has a degree of freedom of rotation in the direction of one of the keys 3422. The ball joint 3421 can transmit the torque of the eccentric shaft 342 to the coupling 35 through the key 3422. At the same time, since the ball joint 3421 and the key 3422 are in an arc contact structure with the coupling 35, the ball joint 3421 can rotate radially relative to the coupling 35 in the arc direction of the key 3422, and the limiting structure can make the coupling 35 and the eccentric shaft 342 have only one degree of freedom of rotation in one direction.

[0050] In one embodiment, see Figure 1 As shown, chamfers 121 are formed at both ends of the inner ring of the rotating shaft 12, and a certain distance is set between the plurality of crushing barrels 1 to form a material drop zone. The chamfers 121 can guide the crushed rubber toward the material drop zone to prevent waste from accumulating on the rotating shaft 12 and affecting the operation of the ultrasonic cutting knife 31. A material drop zone is formed between each crushing barrel 1 to prevent waste from accumulating between two adjacent crushing barrels 1.

[0051] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A cable stripping device for cable recycling, characterized in that: include: A plurality of crushing cylinders (1), wherein the plurality of crushing cylinders (1) are arranged along the direction of travel of the cable, wherein the crushing cylinder (1) comprises a frame (11) and a rotating shaft (12), wherein the rotating shaft (12) is rotatably connected to the inner ring of the frame (11); A motor gear set (2), wherein the motor gear set (2) is drivingly connected to a plurality of rotating shafts (12); A plurality of crushing knives (3), wherein the plurality of crushing knives (3) are arranged along the inner circumference of the rotating shaft (12), a plurality of ultrasonic cutting knives (31) are arranged at the front end of the crushing knives (3), the crushing knives (3) include a fixed sleeve (32) and a telescopic inner shaft (33), the telescopic inner shaft (33) is slidably connected to the fixed sleeve (32), the blade body parts of the plurality of ultrasonic cutting knives (31) are arranged inside the telescopic inner shaft (33) and the blade head parts are located outside the telescopic inner shaft (33); The crushing knife (3) further comprises a driving shaft (34) and a coupling (35), wherein the coupling (35) is rotatably connected to the crushing knife (3), and the plurality of ultrasonic cutting knives (31) are connected to the driving shaft (34) of the actuator through the coupling (35), and the plurality of ultrasonic cutting knives (31) can be driven by the driving shaft (34) to rotate around the central axis of the crushing knife (3); The central axes of the ultrasonic cutting knives (31) and the crushing knives (3) form an angle of β degrees, and the angle β is 0° to 30°. The coupling (35) and the crushing knives (3) are connected by a ball joint structure. The driving shaft (34) includes a connecting shaft (341) and an eccentric shaft (342). The connecting shaft (341) is connected to the actuator and can complete rotation and translation movements on the driving rotation center of the actuator. One end of the eccentric shaft (342) is hinged to the connecting shaft (341), and the other end of the eccentric shaft (342) and the coupling (35) have a degree of rotational freedom in a direction away from one of the ultrasonic cutting knives (31).

2. A cable stripping device for recycling processing according to claim 1, characterized in that: An included angle of α degrees is formed between the eccentric shaft (342) and the connecting shaft (341), and the angle α is 1° to 3°.

3. A cable stripping device for recycling processing according to claim 1, characterized in that: The coupling (35) and the eccentric shaft (342) are hinged to form a hinge joint, and the hinge joint has a rotational freedom in one direction.

4. A cable stripping device for recycling processing according to claim 1, characterized in that: A ball joint (3421) is provided at the end of the eccentric shaft (342), and a plurality of keys (3422) are provided on the periphery of the ball joint (3421). The ball joint (3421) is spline-connected to the coupling (35) and has a degree of freedom of rotation in the direction of one of the keys (3422).

5. A cable stripping device for recycling processing according to any one of claims 1 to 4, characterized in that: Chamfers (121) are formed at both ends of the inner ring of the rotating shaft (12), and a certain distance is provided between the plurality of crushing barrels (1) to form a material dropping area.

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