Waste cable cutting device

Abstract

The invention relates to the field of cable cutting, in particular to a waste cable cutting device which comprises a rack, a cutting device, a driving device and a clamping device, the cutting device comprises an annular support, a cutting knife and a transmission control mechanism, the annular support is rotatably arranged, and the cutting knife is slidably arranged on the annular support in the radial direction; the transmission control mechanism is used for controlling the cutter to move radially. During cutting, along with deep cutting, the cutting knives are firstly and gradually withdrawn in pairs, one cutting knife is withdrawn until the other two cutting knives are withdrawn, only one cutting knife is reserved to complete the final cutting work, the cutting efficiency is improved, meanwhile, the situation that multiple cutting knives collide in the final stage of cutting is avoided, and meanwhile, along with withdrawing of the cutting knives, the cutting efficiency is improved. The total friction force between the side surface of the cutter and the cable cutting section is gradually reduced, so that the cable section is prevented from being twisted due to the friction force between the side surface of the cutter and the cable cutting section, and the flatness of the cutting section is ensured.

Description

Technical Field

[0001] The invention relates to the field of cable cutting, and in particular to a waste cable cutting device. Background Art

[0002] Existing cable cutting devices often use a straight-up and straight-down cutting method when cutting cables. This method easily causes uneven force on the cable, resulting in the cable section being squeezed and causing the cutting quality to decrease. For example, the Chinese patent document with the authorization announcement number CN 110571701 B discloses a cable cutting device, which uses a straight-up and straight-down cutting method. Some existing technologies use a ring cutting method to cut cables. For example, the Chinese patent document with the authorization announcement number CN 112427579 B discloses a cutting device for the production of optoelectronic optical fiber integrated cables. The ring cutting of the cable is achieved by rotating and feeding the cutting blade. Although the device can improve the cross section of the cable to a certain extent, the device uses a single-blade cutting method. When cutting cables with larger diameters, the tool suffers from severe thermal wear and low efficiency.

[0003] In order to improve efficiency, some existing technologies adopt the method of multi-knife synchronous operation. However, when multiple knives work simultaneously, the knife heads may collide at the final cutting moment, and direct cutting cannot be achieved. At the same time, when the cutting knife is working, due to the large number of knives, the two sides of the cutting knife will produce greater friction with the cable cutting section, which will cause the cut section of the cable to be subjected to gradually increasing torque, and finally cause the cable cutting section to be distorted and the cross-sectional flatness to be low. Summary of the invention

[0004] According to the inadequacies of the prior art, the present invention proposes a waste cable cutting device to solve the problem that the existing multi-knife circular cutting device is prone to knife collision and the cutting section has low flatness.

[0005] The waste cable cutting device of the present invention adopts the following technical scheme: it comprises a frame, a cutting device, a driving device and a clamping device; the frame comprises a base and a supporting cylinder arranged on the base, the axis of the supporting cylinder extends horizontally, and the cable passes through the supporting cylinder coaxially; 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.

[0006] Optionally, 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 is 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; Among all the transmission units, 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 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 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; among the remaining transmission units, two transmission units on the same radial line are grouped together, and 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.

[0007] 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 to a pulley, and the synchronous belt is sleeved on the pulley and the annular bracket.

[0008] Optionally, the outer peripheral wall of the annular bracket is provided with a plurality of groups of supporting structures, and the plurality of groups of supporting structures are evenly distributed along the circumferential direction of the annular bracket; Each group of supporting structures comprises 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 supporting structures passes through the annular bracket and its inner end is hinged to the connecting block of the first transmission unit. 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 cylinder is sleeved on the supporting cylinder. The synchronous ring is located on one side of the annular bracket. Each supporting wheel and the synchronous ring are hingedly connected through a hinge plate. 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.

[0009] Optionally, 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.

[0010] Optionally, the cutting knife and the connecting block can be slidably connected and can be locked relative to each other.

[0011] Optionally, four cutting knives are provided and four corresponding transmission units are provided.

[0012] The beneficial effects of the present invention are as follows: a plurality of cutting knives are arranged in a waste cable cutting device of the present invention, and the circular cutting of the cable is realized by the rotation and radial feeding of the cutting knives. At the same time, the number of the cutting knives is an even number and is evenly distributed along the circumferential direction. When cutting, as the cutting goes deeper, the cutting knives are first withdrawn in pairs one by one, until one of the two cutting knives is withdrawn, and only one cutting knives is retained to complete the final cutting work, thereby improving the cutting efficiency and avoiding the collision of multiple cutting knives in the final stage of cutting. At the same time, as the cutting knives are withdrawn, the total friction between the side of the cutting knives and the cutting section of the cable gradually decreases, thereby avoiding the distortion of the cable section due to the friction between the side of the cutting knives and the cutting section of the cable, and ensuring the flatness of the cutting section.

[0013] As the cutting knife cuts deeper, the rotation speed of the annular bracket is gradually increased by changing the transmission ratio of the belt drive, so that the cutting knife always maintains a stable cutting force, further improving the flatness of the cutting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the overall structure of a waste cable cutting device of the present invention; Figure 2 An exploded view of a waste cable cutting device according to the present invention; Figure 3 It is an exploded view of some parts in the present invention; Figure 4 It is a side view of the annular support and its upper parts in the present invention; Figure 5 for Figure 4 Middle AA section view; Figure 6 An exploded view of the first transmission unit and the corresponding supporting structure in the present invention; Figure 7 It is a schematic diagram of the structure of the annular bracket in the present invention.

[0016] In the figure: 100, base; 101, slide; 102, sleeve; 103, ring groove; 104, support tube; 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, ring bracket; 702, articulated short shaft; 703, mounting seat; 800, first fixed ring ;801, first hydraulic cylinder;900, second fixed ring;901, second hydraulic cylinder;110, telescopic adjustment rod;111, hinge ring;112, support wheel;113, inner rod;114, outer rod;120, hinge 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 knife. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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 .

[0021] The present invention is provided with a plurality of cutting knives 170. During the cutting process, as the cutting progresses, the cutting knives 170 are first withdrawn in pairs one by one, until only two cutting knives 170 are left, and then one is withdrawn, leaving only one cutting knives 170 to complete the final cutting work, thereby improving the cutting efficiency and avoiding the collision of the plurality of cutting knives 170 in the final stage of cutting. At the same time, as the cutting work proceeds, the withdrawal of the cutting knives 170 gradually reduces the total friction force between the side of the cutting knives 170 and the cutting section of the cable 500 (here, the total friction force caused by all the cutting knives 170 on the cable 500), thereby preventing the total friction force from exceeding the friction force generated by the clamping device clamping the cable 500, thereby avoiding the situation where the cable 500 section is twisted due to the friction force between the side of the cutting knives 170 and the cutting section of the cable 500, and ensuring the flatness of the cutting section.

[0022] To facilitate the installation of the support tube 104, Figure 1 , Figure 2 As shown, the base 100 has a bottom plate 105 and a support plate 106 arranged on the bottom plate 105, two support plates 106 are provided and are arranged in parallel and spaced apart along the axial direction of the support tube 104, the lower ends of the two support plates 106 are connected by a connecting plate, the support tube 104 has a first cylinder body and a second cylinder body, a gap is provided 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.

[0023] In a further embodiment, Figure 3 , Figure 5 and Figure 6 As shown, the transmission control mechanism includes a plurality of transmission units evenly distributed along the circumference, and each transmission unit controls a cutting knife 170. The transmission units each include a transmission cam 140, a connecting block 160, and a hinge frame 150. The transmission cam 140 is rotatably disposed 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. A feeding motor (not shown in the figure) is disposed on the annular bracket 700, and the feeding motor is used to drive the transmission cam 140 to rotate.

[0024] The connecting block 160 can be radially slidably arranged on the annular bracket 700, and the cutting knife 170 is inserted into the inner end of the connecting block 160 (the inner end is close to the center of the annular bracket 700 and the outer end is far from the center of the annular bracket 700). A second through hole 142 is provided at the high point of the transmission cam 140, and the outer end of the articulated 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.

[0025] Among all the transmission units, the line connecting the center of the first through hole 141 and the center of the second through hole 142 of the transmission cam 140 of one transmission unit 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 line connecting 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 grouped together, and the transmission cam 140 in each group of transmission units has the same structure, and among all groups of transmission units, the length of the line connecting the center of the first through hole 141 and the center of the second through hole 142 of the transmission cam 140 decreases successively.

[0026] The rotation speed of the transmission cam 140 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 170 the same within the same time; initially, the relative positions of all cutting knives 170 and the connecting block 160 are configured so that the cutting edge of the cutting knife 170 contacts the outer peripheral wall of the cable 500.

[0027] For example, 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 as the first cam, and the transmission cam 140 of the second transmission unit is named as the second cam. In addition to the first transmission unit and the second transmission unit, the remaining group of transmission units is named as the third transmission unit, and the transmission cam 140 of the third transmission unit is named as the third cam.

[0028] Initially, all the transmission cams 140 are installed with their high points pointing in the same direction, and all the transmission cams 140 are at the same angle with the corresponding connection blocks 160. When cutting, the driving device drives the annular bracket 700 to rotate, and all the feeding motors are started synchronously at the same time. The feeding motor rotates forward to drive the corresponding transmission cam 140 to rotate in a direction that gradually moves its high point inward. The rotation of the transmission cam 140 pushes the connection block 160 to move toward the direction close to the cable 500 through the hinge frame 150, thereby driving the cutting knife 170 to feed radially. The cutting knife 170 rotates in a circle with the annular bracket 700, and at the same time cooperates with its radial feeding to realize circular cutting of the cable 500.

[0029] During the cutting process, the third cam rotates at the fastest speed, and the third cam first rotates to be in line with the corresponding connection block 160 (that is, in line with the corresponding cutting knife 170). When the third cam rotates to be in line with the connection 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 in the direction close to the cable 500, and the third cam swings back to the return stroke and drives the corresponding cutting knife 170 to retract, and the third cam swings back to the limit position (the direction of the third cam is opposite to the initial position and reaches the initial angle with the connection block 160), and the feed motor of the third cam is controlled to stop. Then, the second cam rotates to be in line with the corresponding connection block 160 (that is, in line with the corresponding cutting knife 170), and the second cam rotates to be in line with the connection block 160, and its stroke reaches the maximum. Then, with the operation of the feed motor, the first cam continues to rotate in the direction close to the cable 500, and the second cam swings back to the return stroke and drives the corresponding cutting knife 170 to retract, and the second cam swings back to the limit position (the direction of the second cam is opposite to the initial position and reaches the initial angle with the connection block 160), and the feed motor of the second cam is controlled to stop. After that, the first cam controls the corresponding last cutting knife 170 to cut the cable 500. As the first cam rotates to be in line with the corresponding connecting block 160, the stroke of the first cam reaches the maximum, and the feed motor continues to operate to control the first cam to swing back, thereby driving the last cutting knife 170 to retract, and the first cam swings back to the extreme position (the direction of the first cam is opposite to the initial position and reaches the initial angle with the connecting block 160), and the feed motor of the first cam is controlled to stop. If cutting is required again, the feed motor is controlled to reverse, and after the cutting is completed, the transmission cam 140 swings to the initial position, and the cycle repeats.

[0030] It should be noted that the cutting knife 170 and the connecting block 160 can be slidably connected and can be relatively locked. When it is necessary to cut cables 500 of different diameters, the relative position of the cutting knife 170 and the connecting block 160 can be adjusted. After adjusting the position, the cutting knife 170 and the connecting block 160 are locked, and the extended length of the cutting knife 170 is changed to match the diameter of the cable 500.

[0031] In a further embodiment, Figure 1 and Figure 2 As shown, the driving device includes a driving motor 300 and a synchronous belt 400. The driving motor 300 is arranged on the base 100. The output shaft of the driving motor 300 is connected to a pulley, and 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.

[0032] In a further embodiment, Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, the outer peripheral wall of the annular bracket 700 is provided with multiple groups of support structures, and the multiple groups of support structures are evenly distributed along the circumferential direction of the annular bracket 700.

[0033] Each group of supporting structures includes a telescopic adjustment rod 110 and a support wheel 112. Two telescopic adjustment rods 110 are provided and are spaced apart along the axial direction of the annular bracket 700. The outer rod 114 of the telescopic adjustment rod 110 extends radially and is fixedly connected to the outer peripheral wall of the annular bracket 700. The inner rod 113 of the telescopic adjustment 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 adjustment rods 110. The synchronous belt 400 is wound around the support wheel 112 and the pulley; the inner rod 113 of the telescopic adjustment rod 110 of one group of supporting structures passes through the annular bracket 700 and its inner end is hinged to the connecting block 160 of the first transmission unit, and the remaining telescopic adjustment rods 110 are elastically retractable and initially in an extended state.

[0034] The support tube 104 is provided with a rotatable synchronous ring 600 that can slide along the axial direction of the support tube 104. The synchronous ring 600 is located on one side of the annular bracket 700. Each support wheel 112 and the synchronous ring 600 are hingedly connected via a hinge plate 120. The base 100 is provided with a moving block 200 that can move along the extension direction of the synchronous belt 400. The driving motor 300 is installed on the moving block 200. The moving block 200 and the base 100 are connected via an elastic telescopic rod. The initial elastic telescopic rod causes the moving block 200 to move away from the annular bracket 700, thereby making the synchronous belt 400 in a tensioned state.

[0035] 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 adjustment rod 110 to move inward, thereby causing the telescopic adjustment rod 110 to contract. The contraction of the telescopic adjustment rod 110 pushes the synchronization ring 600 to move away from the annular bracket 700 through the support wheel 112 and the hinge plate 120. The movement of the synchronization ring 600 drives all other telescopic adjustment rods 110 to contract, thereby causing the support wheel 112 to move inward synchronously. After the support wheel 112 moves inward synchronously, the transmission ratio of the belt drive is changed. As the cutting knife 170 gradually cuts deeper, the rotation speed of the annular bracket 700 gradually increases, so that the cutting knife 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 rotation speed), further improving the flatness of the cutting surface.

[0036] In a preferred embodiment, to facilitate the installation of the hinged plate 120, a plurality of connection grooves 601 are provided on the synchronization ring 600, and a connection seat 130 is provided in the connection grooves 601. A hinge seat is provided on the side of each support wheel 112 close to the synchronization ring 600, and the outer end of the hinged plate 120 is hinged to the hinge seat, and the inner end is hinged to the connection seat 130. To facilitate the installation of the connection block 160, a mounting seat 703 is provided on the annular bracket 700, and the connection block 160 can be radially slidably arranged on the mounting seat 703. To facilitate the installation of the transmission cam 140, a hinged short shaft 702 is provided on the annular bracket 700, and the transmission cam 140 is fixedly connected to the hinged short shaft 702 through the first through hole 141, and the hinged short shaft 702 can rotate under the drive of the feed motor. Figure 6 As shown, in order to facilitate the connection between the inner rod 113 of the telescopic adjustment rod 110 of the first transmission unit and the corresponding connecting block 160, a hinge ring 111 is provided at the inner end of the inner rod 113 of the telescopic adjustment 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.

[0037] Preferred embodiments, such as Figure 2 As shown, a slide groove 101 is provided on the bottom plate 105, and the moving block 200 can be slidably provided in the slide groove 101. A sleeve 102 is provided on the support plate 106, and 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. The sleeve 102, the connecting column 201 and the connecting spring therein constitute the above-mentioned elastic telescopic rod.

[0038] In a preferred embodiment, the clamping device includes a first fixing ring 800 and a second fixing ring 900, which are both coaxially fixed inside the support tube 104 and arranged on both sides of the annular bracket 700; the inner circumferential wall of the first fixing ring 800 is evenly distributed with a plurality of first hydraulic cylinders 801 along the circumferential direction, and the first hydraulic cylinders 801 extend radially; the inner circumferential wall of the second fixing ring 900 is evenly distributed with a plurality of second hydraulic cylinders 901 along the circumferential direction, and the second hydraulic cylinders 901 extend radially; when it is necessary to cut the cable 500, the first hydraulic cylinder 801 and the second hydraulic cylinder 901 are controlled to extend to provide a preset clamping force to the cable 500, and then the cable 500 can be circularly cut.

[0039] It should be noted that the present invention can be used as one of the processes in the production of the cable 500, and cooperates 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.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in 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 support tube arranged on the base, the axis of the support tube extends horizontally, and the cable coaxially passes through the support tube; 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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