A waste cable cutting device

Abstract

The present invention relates to the field of cable cutting, and specifically relates to a waste cable truncating device, which comprises a frame, a cutting device, a driving device and a clamping device. The cutting device includes an annular bracket, a cutting knife and a transmission control mechanism. The annular bracket is rotatably arranged, the cutting knife is slidably arranged radially on the annular bracket, and the transmission control mechanism is used to control the radial movement of the cutting knife. When cutting in the present invention, as the cutting progresses, the cutting knives are first retracted pairwise successively until one cutting knife is retracted when only two cutting knives remain, and only one cutting knife is retained to complete the final cutting work. While improving the cutting efficiency, it avoids the situation of multiple cutting knives colliding in the final stage of cutting. At the same time, as the cutting knives are retracted, the total friction force between the side surface of the cutting knife and the cable cutting section gradually decreases, avoiding the cable cross-section being distorted due to the friction force between the side surface of the cutting knife and the cable cutting section, and ensuring the flatness of the cutting section.

Description

Technical Field

[0001] The present invention relates to the field of cable cutting, and particularly to a device for truncating waste cables. Background Art

[0002] Existing cable truncating devices often adopt a straight up and down cutting method when cutting cables. This method easily causes uneven stress on the cables, resulting in the extrusion of the cable cross-section and a decline in cutting quality. For example, the Chinese patent document with the authorization announcement number CN 110571701 B discloses a cable cutting device, which adopts a straight up and down cutting method. There are also some existing technologies that use a circumferential cutting method for cable cutting. For example, the Chinese patent document with the authorization announcement number CN 112427579 B discloses a cutting device for the production of optoelectronic fiber composite cables. The circumferential cutting of the cable is achieved through the rotation and feeding of the cutting blade. Although this device can improve the cable cross-section to a certain extent, it uses a single blade for cutting, and the tool heats up and wears severely when cutting cables with a larger diameter, resulting in low efficiency.

[0003] To improve efficiency, some existing technologies adopt a multi-blade synchronous working method. However, when the multi-blades work simultaneously, the tool heads will collide at the final cutting moment, making it impossible to achieve direct cutting. At the same time, when the cutting blades are working, due to the large number of tools, the two side surfaces of the cutting blades will generate large friction with the cable cutting cross-section, resulting in a gradually increasing torsion force on the cable cutting cross-section, and finally leading to the distortion of the cable cutting cross-section and low flatness of the cross-section. Summary of the Invention

[0004] According to the deficiencies of the existing technology, the present invention proposes a device for truncating waste cables to solve the problems that the existing multi-blade circumferential cutting devices are prone to tool head collision and have low flatness of the cutting cross-section.

[0005] A device for truncating waste cables of the present invention adopts the following technical solution: It includes a frame, a cutting device, a driving device, and a clamping device; the frame includes a base and a support cylinder arranged on the base, the axis of the support cylinder extends horizontally, and the cable passes through the support cylinder coaxially;

[0006] The cutting device includes an annular bracket, a cutting blade, and a transmission control mechanism. A ring groove is provided in the middle of the support cylinder, the ring groove penetrates the inner and outer peripheral wall surfaces of the support cylinder, the annular bracket is located at the ring groove and is rotatably connected to the support cylinder coaxially, the cutting blade is slidably arranged on the annular bracket along the radial direction, and the number of cutting blades is an even number and they are evenly distributed along the circumferential direction;

[0007] The transmission control mechanism is used to control the radial movement of the cutting knives. The cutting knives rotate with the annular bracket and move radially to perform a circumferential cut on the cable. The transmission control mechanism is configured to control all the cutting knives to move synchronously towards the cable during the cutting process. When there are two cutting knives, when cutting to a first preset depth, one of the cutting knives is controlled to retract, and after the cutting is completed, the other cutting knife is controlled to retract; when there are more than two cutting knives, every time the second preset depth is cut, two cutting knives located on the same radial line are controlled to retract, until there are finally two cutting knives left, then one of the two cutting knives is controlled to retract, and after the cutting is completed, the last cutting knife is controlled to retract;

[0008] The driving device is arranged on the base and is in transmission connection with the annular bracket. The driving device is used to control the rotation of the annular bracket; the clamping device is arranged on the support cylinder and on both sides of the annular bracket. The clamping device is used to provide a preset clamping force to clamp the cable.

[0009] Optionally, the transmission control mechanism includes a plurality of transmission units evenly distributed along the circumference. Each transmission unit controls one cutting knife; each transmission unit includes a transmission cam, a connecting block and a hinge frame. The transmission cam is rotatably arranged on the annular bracket through a first through hole thereon, and the rotation axis of the transmission cam is parallel to the axis of the annular bracket. An indexing motor for driving the transmission cam to rotate is arranged on the annular bracket; the connecting block is slidably arranged radially on the annular bracket. The cutting knife is inserted into the inner end of the connecting block. A second through hole is arranged at the high point of the transmission cam. The outer end of the hinge frame is hinged to the transmission cam through the second through hole, and the inner end is hinged to the outer end of the connecting block;

[0010] Among all the transmission units, the connection line between the center of the first through hole and the center of the second through hole of the transmission cam of one of the transmission units is the longest. This transmission unit is named the first transmission unit; the transmission unit on the same radial line as the first transmission unit is named the second transmission unit, and the connection line between the center of the first through hole and the center of the second through hole of the transmission cam of the second transmission unit is the second longest; among the remaining transmission units, two transmission units on the same radial line are in a group. The transmission cams in each group of transmission units have the same structure, and among all groups of transmission units, the lengths of the connection lines between the center of the first through hole and the center of the second through hole of the transmission cams decrease in sequence;

[0011] The rotational speeds of the transmission cams in the first transmission unit, the second transmission unit and each of the remaining groups of transmission units increase in sequence and are configured to make the feed amounts of all the cutting knives the same within the same time; the relative positions of all the cutting knives and the connecting blocks are initially configured such that the cutting edges of the cutting knives are in contact with the outer peripheral wall of the cable.

[0012] Optionally, the driving device includes a driving motor and a synchronous belt. The driving motor is arranged on the base. The output shaft of the driving motor is connected with a pulley, and the synchronous belt is sleeved on the pulley and the annular bracket.

[0013] Optionally, multiple groups of support structures are provided on the outer peripheral wall of the annular bracket, and the multiple groups of support mechanisms are evenly distributed along the circumferential direction of the annular bracket;

[0014] Each group of support structures includes a telescopic adjusting rod and a support wheel. There are two telescopic adjusting rods which are arranged at intervals along the axial direction of the annular bracket. The outer rod of the telescopic adjusting rod extends radially and is fixedly connected to the annular bracket. The inner rod of the telescopic adjusting rod is slidably inserted into its outer rod. The support wheel is connected to the outer ends of the inner rods of the two telescopic adjusting rods. The synchronous belt is wound around the support wheel and the belt pulley; The inner rod of the telescopic adjusting rod of one group of support structures passes through the annular bracket and its inner end is hinged to the connecting block of the first transmission unit. The remaining telescopic adjusting rods elastically expand and contract and are initially in the extended state; A rotatable and axially slidable synchronous ring is sleeved on the support cylinder. The synchronous ring is located on one side of the annular bracket. Each support wheel and the synchronous ring are hinged and connected through a hinge plate;

[0015] A moving block movable along the extending direction of the synchronous belt is provided on the base. The driving motor is installed on the moving block. The moving block and the base are connected through an elastic telescopic rod. Initially, the elastic telescopic rod urges the moving block to move away from the annular bracket.

[0016] Optionally, the clamping device includes a first fixing ring and a second fixing ring. The first fixing ring and the second fixing ring are both coaxially and fixedly arranged inside the support cylinder and are arranged on both sides of the annular bracket; A plurality of first hydraulic cylinders are evenly distributed along the circumferential direction on the inner peripheral wall of the first fixing ring, and the first hydraulic cylinders extend radially; A plurality of second hydraulic cylinders are evenly distributed along the circumferential direction on the inner peripheral wall of the second fixing ring, and the second hydraulic cylinders extend radially.

[0017] Optionally, the cutting knife is slidably connected to the connecting block and can be relatively locked.

[0018] Optionally, four cutting knives are provided, and correspondingly four transmission units are provided.

[0019] The beneficial effects of the present invention are as follows: Multiple cutting knives are provided in a waste cable cutting device of the present invention, and the circumferential cutting of the cable is realized through the rotation and radial feed of the cutting knives. At the same time, the number of cutting knives is even and evenly distributed along the circumferential direction. During cutting, as the cutting progresses, the cutting knives are first retracted in pairs one by one until one cutting knife is retracted when there are two remaining cutting knives, and only one cutting knife is left to complete the final cutting work. While improving the cutting efficiency, the situation of collision of multiple cutting knives in the final stage of cutting is avoided. At the same time, as the cutting knives are retracted, the total friction force between the side surface of the cutting knife and the cable cutting section gradually decreases, avoiding the situation that the cable section is distorted due to the friction force between the side surface of the cutting knife and the cable cutting section, and ensuring the flatness of the cutting section.

[0020] As the cutting of the cutting tool gradually deepens, the rotation speed of the annular bracket is gradually increased by changing the transmission ratio of the belt drive, so that the cutting tool always maintains a stable cutting force, further improving the flatness of the cutting surface. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0022] Figure 1 It is a schematic diagram of the overall structure of a waste cable cutting device of the present invention;

[0023] Figure 2 It is an exploded view of a waste cable cutting device of the present invention;

[0024] Figure 3 It is an exploded view of some components in the present invention;

[0025] Figure 4 It is a side view of the annular bracket and some parts thereon in the present invention;

[0026] Figure 5 It is Figure 4 the sectional view taken along A-A in

[0027] Figure 6 It is an exploded view of the first transmission unit and its corresponding support structure, etc. in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the annular bracket in the present invention.

[0029] In the figure: 100, base; 101, chute; 102, sleeve; 103, annular groove; 104, support cylinder; 105, bottom plate; 106, support plate; 200, moving block; 201, connecting column; 300, driving motor; 400, synchronous belt; 500, cable; 600, synchronous ring; 601, connecting groove; 700, annular bracket; 702, articulated short shaft; 703, mounting seat; 800, first fixing ring; 801, first hydraulic cylinder; 900, second fixing ring; 901, second hydraulic cylinder; 110, telescopic adjusting rod; 111, articulated ring; 112, support wheel; 113, inner rod; 114, outer rod; 120, articulated plate; 130, connecting seat; 140, transmission cam; 141, first through hole; 142, second through hole; 150, articulated frame; 160, connecting block; 161, connecting shaft; 170, cutting tool. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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.

[0031] like Figures 1 to 7 As shown, a waste cable cutting device of the present invention comprises a frame, a cutting device, a driving device and a clamping device. The frame comprises a base 100 and a support tube 104 arranged on the base 100, the axis of the support tube 104 extends horizontally, and the cable 500 coaxially passes through the support tube 104.

[0032] The cutting device includes an annular bracket 700, a cutting knife 170 and a transmission control mechanism. An annular groove 103 is provided in the middle of the support tube 104. The annular groove 103 passes through the inner and outer circumferential walls of the support tube 104. The annular bracket 700 is located at the annular groove 103 and is coaxially rotatably connected to the support tube 104. The cutting knife 170 is radially slidably arranged on the annular bracket 700. There are an even number of cutting knives 170 and they are evenly distributed along the circumferential direction. The transmission control mechanism is used to control the radial movement of the cutting knife 170. The cutting knife 170 moves radially while rotating with the annular bracket 700 to perform circular cutting on the cable 500. The transmission control mechanism is configured to control all the cutting knives 170 to move synchronously in the direction close to the cable 500 during the cutting process. When there are two cutting knives 170, when cutting the first preset depth, one of the cutting knives 170 is controlled to be retracted, and the other cutting knives 170 is controlled to be retracted after the cutting is completed. When there are more than two cutting knives 170, when cutting the second preset depth, two cutting knives 170 located on the same radial line are controlled to be retracted, until the last two cutting knives 170 are left, one of the two cutting knives 170 is controlled to be retracted, and the last cutting knives 170 is controlled to be retracted after the cutting is completed. The first preset depth and the second preset depth can be set according to the cable diameter.

[0033] The driving device is arranged on the base 100 and is transmission-connected to the annular bracket 700 , and the driving device is used to control the rotation of the annular bracket 700 ; the clamping device is arranged on the support tube 104 and is located on both sides of the annular bracket 700 , and the clamping device is used to provide a preset clamping force to clamp the cable 500 .

[0034] In the present invention, multiple cutting blades 170 are provided. During the cutting process, as the cutting progresses, the cutting blades 170 are first retracted in pairs successively until only two cutting blades 170 remain. Then, one of them is retracted, and only one cutting blade 170 is left to complete the final cutting work. This not only improves the cutting efficiency but also avoids the collision of multiple cutting blades 170 in the final cutting stage. At the same time, as the cutting work progresses, the retraction of the cutting blades 170 causes the total frictional force between the side surfaces of the cutting blades 170 and the cutting cross-section of the cable 500 (here referring to the total frictional force caused by all cutting blades 170 on the cable 500) to gradually decrease. As a result, the total frictional force will not exceed the frictional force generated by the clamping device clamping the cable 500, avoiding the situation where the cross-section of the cable 500 is distorted due to the frictional force between the side surfaces of the cutting blades 170 and the cutting cross-section of the cable 500, and ensuring the flatness of the cutting cross-section.

[0035] For the convenience of installing the support cylinder 104, as Figure 1 、 Figure 2 shown, the base 100 has a bottom plate 105 and a support plate 106 provided on the bottom plate 105. There are two support plates 106, which are arranged in parallel at intervals along the axial direction of the support cylinder 104. The lower ends of the two support plates 106 are connected by a connecting plate. The support cylinder 104 has a first cylinder body and a second cylinder body. There is a gap between the first cylinder body and the second cylinder body to form an annular groove 103. The first cylinder body and the second cylinder body are respectively supported by one of the two support plates 106, and the second cylinder body is integrally formed with the corresponding support plate 106.

[0036] In a further embodiment, as Figure 3 、 Figure 5 and Figure 6 shown, the transmission control mechanism includes a plurality of transmission units evenly distributed along the circumference, and each transmission unit controls one cutting blade 170. Each transmission unit includes a transmission cam 140, a connecting block 160, and a hinge frame 150. The transmission cam 140 is rotatably arranged on the annular bracket 700 through a first through hole 141 thereon, and the rotation axis of the transmission cam 140 is parallel to the axis of the annular bracket 700. An indexing motor (not shown in the figure) is provided on the annular bracket 700, and the indexing motor is used to drive the transmission cam 140 to rotate.

[0037] The connecting block 160 is slidably arranged on the annular bracket 700 in the radial direction. The cutting blade 170 is inserted into the inner end of the connecting block 160 (close to the center of the annular bracket 700 is the inner side, and far from the center of the annular bracket 700 is the outer side). A second through hole 142 is provided at the high point of the transmission cam 140. The outer end of the hinge frame 150 is hinged to the transmission cam 140 through the second through hole 142, and the inner end is hinged to the outer end of the connecting block 160.

[0038] Among all the transmission units, the connecting line between the center of the first through hole 141 and the center of the second through hole 142 of the transmission cam 140 of one of the transmission units is the longest, and this transmission unit is named the first transmission unit; the transmission unit on the same radial line as the first transmission unit is named the second transmission unit, and the connecting line between the center of the first through hole 141 and the center of the second through hole 142 of the transmission cam 140 of the second transmission unit is the second longest; among the remaining transmission units, two transmission units on the same radial line are taken as a group, the structures of the transmission cams 140 in each group of transmission units are the same, and among all groups of transmission units, the lengths of the connecting lines between the center of the first through hole 141 and the center of the second through hole 142 of the transmission cams 140 decrease in sequence.

[0039] The rotational speeds of the transmission cams 140 in the first transmission unit, the second transmission unit, and each of the remaining groups of transmission units increase in sequence and are configured to make the feed amounts of all the cutting knives 170 the same within the same time; initially, the relative positions of all the cutting knives 170 and the connecting block 160 are configured such that the cutting edges of the cutting knives 170 are in contact with the outer peripheral wall of the cable 500.

[0040] Exemplarily, four cutting knives 170 are provided, and correspondingly four transmission units are provided. For the convenience of description, the transmission cam 140 of the first transmission unit is named the first cam, the transmission cam 140 of the second transmission unit is named the second cam, except for the first transmission unit and the second transmission unit, the remaining group of transmission units is named the third transmission unit, and the transmission cam 140 of the third transmission unit is named the third cam.

[0041] Initially, the high points of all the transmission cams 140 are installed pointing in the same direction, and the angles between all the transmission cams 140 and the corresponding connecting blocks 160 are the same. When cutting, the driving device drives the annular bracket 700 to rotate, and at the same time, all the feed motors are synchronously started. The positive rotation of the feed motors drives the corresponding transmission cams 140 to rotate in the direction of making their high points gradually move inward, and the rotation of the transmission cams 140 pushes the connecting block 160 to move towards the cable 500 through the articulated frame 150, thereby driving the cutting knives 170 to radially feed. The cutting knives 170 rotate circumferentially with the annular bracket 700 and at the same time cooperate with their radial feed to achieve the circumferential cutting of the cable 500.

[0042] During the cutting process, the third cam rotates at the fastest speed. The third cam rotates first until it is collinear with the corresponding connecting block 160 (i.e., collinear with the corresponding cutting tool 170). When the third cam rotates to be collinear with the connecting block 160, its stroke reaches the maximum. Then, with the operation of the feed motor, the first cam and the second cam continue to rotate towards the direction close to the cable 500, while the third cam swings back towards the return stroke and drives the corresponding cutting tool 170 to retract. When the third cam swings back to the limit position (the direction of the third cam is opposite to the initial direction and reaches the initial angle with the connecting block 160), the feed motor controlling the third cam stops rotating. Then, the second cam rotates until it is collinear with the corresponding connecting block 160 (i.e., collinear with the corresponding cutting tool 170). When the second cam rotates to be collinear with the connecting block 160, its stroke reaches the maximum. Then, with the operation of the feed motor, the first cam continues to rotate towards the direction close to the cable 500, while the second cam swings back towards the return stroke and drives the corresponding cutting tool 170 to retract. When the second cam swings back to the limit position (the direction of the second cam is opposite to the initial direction and reaches the initial angle with the connecting block 160), the feed motor controlling the second cam stops rotating. After that, the first cam controls the corresponding last cutting tool 170 to cut the cable 500. As the first cam rotates to be collinear with the corresponding connecting block 160, the stroke of the first cam reaches the maximum. The feed motor continues to operate to control the first cam to swing back, thereby driving the last cutting tool 170 to retract. When the first cam swings back to the limit position (the direction of the first cam is opposite to the initial direction and reaches the initial angle with the connecting block 160), the feed motor controlling the first cam stops rotating. After that, if cutting is required again, control the feed motor to reverse. After cutting is completed, the driving cam 140 swings to the initial position, and so on.

[0043] It should be noted that the cutting tool 170 is slidably connected to the connecting block 160 and can be relatively locked. When cutting cables 500 with different diameters, the relative position of the cutting tool 170 and the connecting block 160 can be adjusted. After adjusting the position, lock the cutting tool 170 and the connecting block 160. The extended length of the cutting tool 170 changes to match the diameter of the cable 500.

[0044] In a further embodiment, as Figure 1 and Figure 2 shown, the driving device includes a driving motor 300 and a synchronous belt 400. The driving motor 300 is arranged on the base 100. A pulley is connected to the output shaft of the driving motor 300. The synchronous belt 400 is sleeved on the pulley and the annular bracket 700. The driving motor 300 drives the pulley to rotate, and then drives the annular bracket 700 to rotate through the synchronous belt 400.

[0045] In a further embodiment, as Figure 3 、 Figure 5 、 Figure 6 and Figure 7As shown, multiple groups of support structures are provided on the outer peripheral wall of the annular support 700, and the multiple groups of support mechanisms are evenly distributed along the circumferential direction of the annular support 700.

[0046] Each group of support structures includes a telescopic adjusting rod 110 and a support wheel 112. There are two telescopic adjusting rods 110 which are arranged at intervals along the axial direction of the annular support 700. The outer rod 114 of the telescopic adjusting rod 110 extends radially and is fixedly connected to the outer peripheral wall of the annular support 700. The inner rod 113 of the telescopic adjusting rod 110 is slidably inserted into its outer rod 114. The support wheel 112 is connected to the outer ends of the inner rods 113 of the two telescopic adjusting rods 110. The synchronous belt 400 is wound around the support wheel 112 and the belt pulley. The inner rod 113 of the telescopic adjusting rod 110 of one group of support structures passes through the annular support 700 and its inner end is hinged to the connecting block 160 of the first transmission unit. The remaining telescopic adjusting rods 110 are elastically telescopic and are initially in the extended state.

[0047] A rotatable and axially slidable synchronous ring 600 is sleeved on the support cylinder 104. The synchronous ring 600 is located on one side of the annular support 700. Each support wheel 112 and the synchronous ring 600 are hingedly connected through a hinge plate 120. A moving block 200 that can move along the extending direction of the synchronous belt 400 is provided on the base 100. The driving motor 300 is installed on the moving block 200. The moving block 200 and the base 100 are connected through an elastic telescopic rod. Initially, the elastic telescopic rod urges the moving block 200 to move away from the annular support 700, so that the synchronous belt 400 is in a tensioned state.

[0048] During the cutting process, as the cutting progresses, the connecting block 160 of the first transmission unit drives the inner rod 113 of the corresponding telescopic adjusting rod 110 to move inward, thereby causing the telescopic adjusting rod 110 to contract. The contraction of the telescopic adjusting rod 110 pushes the synchronous ring 600 to move away from the annular support 700 through the support wheel 112 and the hinge plate 120. The movement of the synchronous ring 600 drives the contraction of all the remaining telescopic adjusting rods 110, thereby causing the support wheels 112 to move inward synchronously. After the support wheels 112 move inward synchronously, the transmission ratio of the belt drive is changed. As the cutting of the cutting tool 170 gradually deepens, the rotational speed of the annular support 700 gradually increases, so that the cutting tool 170 always maintains a stable cutting force (the deeper the cutting, the greater the friction and the greater the cutting resistance, and the cutting force is increased by increasing the rotational speed), further improving the flatness of the cutting surface.

[0049] Preferred embodiment. For the convenience of installing the hinge plate 120, a plurality of connecting grooves 601 are provided on the synchronous ring 600, and connecting seats 130 are arranged in the connecting grooves 601. On one side of each supporting wheel 112 close to the synchronous ring 600, a hinge seat is provided. The outer end of the hinge plate 120 is hinged to the hinge seat, and the inner end is hinged to the connecting seat 130. For the convenience of installing the connecting block 160, a mounting seat 703 is provided on the annular bracket 700, and the connecting block 160 is slidably arranged in the mounting seat 703. For the convenience of installing the transmission cam 140, a hinge short shaft 702 is provided on the annular bracket 700, and the transmission cam 140 is fixedly connected to the hinge short shaft 702 through the first through hole 141, and the hinge short shaft 702 can rotate driven by the feeding motor. As Figure 6 shown, for the convenience of connecting the inner rod 113 of the telescopic adjusting rod 110 of the first transmission unit to the corresponding connecting block 160, a hinge ring 111 is provided at the inner end of the inner rod 113 of the telescopic adjusting rod 110 of the first transmission unit, and a connecting shaft 161 is provided on the connecting block 160 of the first transmission unit, and the hinge ring 111 is hinged to the connecting shaft 161.

[0050] Preferred embodiment, as Figure 2 shown, a sliding groove 101 is provided on the bottom plate 105, the moving block 200 is slidably arranged in the sliding groove 101, a sleeve 102 is provided on the support plate 106, a connecting column 201 is provided on the moving block 200, the connecting column 201 and the sleeve 102 are slidably inserted and connected by a connecting spring, and the sleeve 102, the connecting column 201 and the connecting spring inside thereof form the above-mentioned elastic telescopic rod.

[0051] Preferred embodiment. The clamping device includes a first fixing ring 800 and a second fixing ring 900. The first fixing ring 800 and the second fixing ring 900 are both coaxially and fixedly arranged inside the support cylinder 104 and are arranged on both sides of the annular bracket 700; a plurality of first hydraulic cylinders 801 are evenly distributed along the circumferential direction on the inner peripheral wall of the first fixing ring 800, and the first hydraulic cylinders 801 extend radially; a plurality of second hydraulic cylinders 901 are evenly distributed along the circumferential direction on the inner peripheral wall of the second fixing ring 900, and the second hydraulic cylinders 901 extend radially; when the cable 500 needs to be cut, control the first hydraulic cylinders 801 and the second hydraulic cylinders 901 to extend to provide a preset clamping force to the cable 500, and then the cable 500 can be cut in a circular shape.

[0052] It should be noted that the present invention can be used as one of the processes in the production of the cable 500, and cooperate with a conveying device (not shown in the figure) to cut the cable 500 during the pulling process of the cable 500. Naturally, the present invention can also be used alone.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waste cable cutting device, characterized in that: It includes a frame, a cutting device, a driving device and a clamping device; the frame includes a base and a supporting cylinder arranged on the base, the axis of the supporting cylinder extends horizontally, and the cable coaxially passes through the supporting cylinder; The cutting device comprises an annular support, a cutting knife and a transmission control mechanism. An annular groove is arranged in the middle of the support tube, and the annular groove penetrates the inner and outer peripheral walls of the support tube. The annular support is located at the annular groove and is coaxially rotatably connected with the support tube. The cutting knife is slidably arranged on the annular support in the radial direction. There are an even number of cutting knives and they are evenly distributed in the circumferential direction. The transmission control mechanism is used to control the radial movement of the cutting knife. The cutting knife rotates and moves radially with the annular support to perform circular cutting on the cable. The transmission control mechanism is configured to control all the cutting knives to move synchronously in the direction close to the cable during the cutting process, and when there are two cutting knives, one of the cutting knives is controlled to be retracted when cutting the first preset depth, and the other cutting knife is controlled to be retracted after the cutting is completed; when there are more than two cutting knives, two cutting knives located on the same radial line are controlled to be retracted each time the second preset depth is cut, until the last two cutting knives are left, one of the two cutting knives is controlled to be retracted, and the last cutting knife is controlled to be retracted after the cutting is completed; The driving device is arranged on the base and is transmission-connected to the annular bracket, and the driving device is used to control the rotation of the annular bracket; the clamping device is arranged on the supporting tube and is located on both sides of the annular bracket, and the clamping device is used to provide a preset clamping force to clamp the cable.

2. A waste cable cutting device according to claim 1, characterized in that: The transmission control mechanism includes a plurality of transmission units evenly distributed along the circumference, each transmission unit controls a cutting knife; each transmission unit includes a transmission cam, a connecting block and an articulated frame, the transmission cam is rotatably arranged on the annular bracket through a first through hole thereon, and the rotation axis of the transmission cam is parallel to the axis of the annular bracket, and a feed motor for driving the transmission cam to rotate is arranged on the annular bracket; the connecting block can be radially slidably arranged on the annular bracket, the cutting knife is inserted into the inner end of the connecting block, a second through hole is arranged at the high point of the transmission cam, the outer end of the articulated frame is hinged to the transmission cam through the second through hole, and the inner end is hinged to the outer end of the connecting block.

3. A waste cable cutting device according to claim 2, characterized in that: The line connecting the center of the first through hole and the center of the second through hole of the transmission cam of one transmission unit is the longest, and the transmission unit is named the first transmission unit; the transmission unit on the same radial line as the first transmission unit is named the second transmission unit, and the line connecting the center of the first through hole and the center of the second through hole of the transmission cam of the second transmission unit is the second longest; in the remaining transmission units, two transmission units on the same radial line are grouped together, the transmission cams in each group of transmission units have the same structure, and in all groups of transmission units, the length of the line connecting the center of the first through hole and the center of the second through hole of the transmission cam decreases successively; The rotation speed of the transmission cams in the first transmission unit, the second transmission unit and each of the remaining transmission units increases successively and is configured to make the feed amount of all cutting knives the same within the same time; initially, the relative positions of all cutting knives and the connecting blocks are configured so that the cutting edges of the cutting knives contact the outer peripheral wall of the cable.

4. A waste cable cutting device according to claim 3, characterized in that: The driving device comprises a driving motor and a synchronous belt. The driving motor is arranged on the base. The output shaft of the driving motor is connected with a pulley. The synchronous belt is sleeved on the pulley and the annular bracket.

5. A waste cable cutting device according to claim 4, characterized in that: The outer peripheral wall of the annular bracket is provided with multiple groups of supporting structures, and the multiple groups of supporting structures are evenly distributed along the circumferential direction of the annular bracket.

6. A waste cable cutting device according to claim 5, characterized in that: The supporting structure includes a telescopic adjustment rod and a supporting wheel. Two telescopic adjustment rods are provided and are spaced apart along the axial direction of the annular bracket. The outer rod of the telescopic adjustment rod extends radially and is fixedly connected to the annular bracket. The inner rod of the telescopic adjustment rod is slidably inserted into the outer rod. The supporting wheel is connected to the outer ends of the inner rods of the two telescopic adjustment rods. The synchronous belt is wound around the supporting wheel and the pulley. The inner rod of the telescopic adjustment rod of one group of the supporting structure passes through the annular bracket and the inner end thereof is hinged to the connecting block of the first transmission unit, and the remaining telescopic adjustment rods are elastically retractable and initially in an extended state. A rotatable synchronous ring that can slide along the axial direction of the support tube is sleeved on the supporting tube. The synchronous ring is located on one side of the annular bracket, and each supporting wheel and the synchronous ring are hingedly connected by a hinge plate.

7. A waste cable cutting device according to claim 6, characterized in that: A moving block movable along the extension direction of the synchronous belt is arranged on the base, a driving motor is installed on the moving block, the moving block and the base are connected by an elastic telescopic rod, and the initial elastic telescopic rod prompts the moving block to move away from the annular bracket.

8. The waste cable cutting device according to claim 1, characterized in that: The clamping device includes a first fixing ring and a second fixing ring, which are coaxially fixed inside the support tube and arranged on both sides of the annular bracket; the inner circumferential wall of the first fixing ring is evenly distributed with a plurality of first hydraulic cylinders along the circumferential direction, and the first hydraulic cylinders extend radially; the inner circumferential wall of the second fixing ring is evenly distributed with a plurality of second hydraulic cylinders along the circumferential direction, and the second hydraulic cylinders extend radially.

9. The waste cable cutting device according to claim 3, characterized in that: The cutting knife and the connecting block can be slidably connected and can be relatively locked.

10. The waste cable cutting device according to claim 3, characterized in that: Four cutting knives are provided, and four corresponding transmission units are provided.

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