Stranding equipment for polypropylene cable production

Abstract

The invention relates to the technical field of polypropylene cable production, in particular to a stranding device for polypropylene cable production, which comprises a bracket and an electric hollow pipe mounted on the bracket, a porous disc is fixedly sleeved on the electric hollow pipe, and limiting frames are rotatably connected to the porous disc at uniform intervals in the circumferential direction through dampers. The limiting device is used for limiting a coil of copper wires. A copper wire can be driven to rotate through a wire stranding disc, the copper wire is rotationally stranded on a central wire, a tensioning wheel can tension the copper wire for stranding, when the copper wire is broken due to tension, a limiting wheel can press and limit the left copper wire which is broken, and an electric lifting frame drives a placement roller to rotate through a rack and a one-way gear; and the placement roller rotates to wind the broken right copper wire, so that the phenomenon that subsequent use is affected due to the winding phenomenon of the broken copper wire caused by inertia swinging is prevented, and the subsequent stranding efficiency of the copper wire is improved.

Description

Technical Field

[0001] The invention relates to the technical field of polypropylene cable production, in particular to a stranding device for polypropylene cable production. Background Art

[0002] In the field of cable manufacturing, polypropylene is widely used as an insulation and sheath material for cables due to its excellent electrical properties, mechanical strength, and heat resistance. In the production process of polypropylene cables, multiple copper wires need to be twisted together with a central conductor to form a single cable.

[0003] The Chinese patent with the announcement number CN116665997B discloses a cable copper wire twisting device. In order to overcome the disadvantage that the copper wire is too tight or too loose during twisting, which leads to a decrease in cable quality. A cable copper wire twisting device includes a base frame, the base frame is fixed with a first fixed frame, the first fixed frame is slidably connected to a first sliding block, the first fixed frame is slidably connected to a first adjusting block, the first fixed frame and the first adjusting block are both rotatably connected to a first friction wheel, the first fixed frame is fixed with a pneumatic device, the pneumatic device is connected to a first connecting pipe, and the first connecting pipe is connected to a monitoring ring. Although the above patent can twist multiple copper wires together, in order to improve the quality of the twisted wire, it is necessary to make the steel wire have sufficient tension during the twisting process. If the tension is too large, it is easy to cause stress concentration of the copper wire under deformation such as bending, which is easy to cause the copper wire to break. Once the copper wire breaks, the copper wire is easily swung and entangled inside the twisting device under the action of inertia, resulting in the need for manual processing of the wound copper wire, affecting the subsequent twisting efficiency of the copper wire.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, a stranding device for polypropylene cable production is proposed, which can compress and guide broken copper wires and then reel them up to prevent entanglement and improve the subsequent stranding efficiency of the copper wires. Summary of the Invention

[0005] In order to overcome the disadvantage that excessive tension may easily lead to stress concentration in the copper wire under deformation such as bending, which may easily lead to the breakage of the copper wire, and once the copper wire breaks, the copper wire may be easily swung and entangled in the stranding device under the action of inertia, resulting in the need for manual processing of the wound copper wire, which affects the subsequent stranding efficiency of the copper wire. The present invention provides a stranding device for polypropylene cable production that can compress and guide the broken copper wire and then reel it up to prevent entanglement and improve the subsequent stranding efficiency of the copper wire.

[0006] The present invention is achieved through the following technical solutions: A stranding device for polypropylene cable production includes a bracket and an electric hollow tube mounted on the bracket. A porous disk is fixedly mounted on the electric hollow tube. The porous disk is connected to a limit frame through damping rotation at evenly spaced intervals along the circumference. L-shaped plates are fixedly connected to the porous disk at evenly spaced intervals along the circumference. A placement roller is rotatably connected to the L-shaped plate. A stranding drum is fixedly mounted on the electric hollow tube. A through hole is opened on the bracket. The device is characterized in that it also includes a conveying assembly arranged on the bracket for driving a single cable after stranding to move for conveying. A one-way gear is fixedly mounted on the placement roller. A fixed frame is fixedly connected to the outer side of the winding drum at uniform intervals along the circumferential direction, and an electric lifting frame is installed on the inner side of the fixed frame. A rack meshing with the one-way gear is fixed on the electric lifting frame. The electric lifting frame is used to drive the rack to move inward, and the rack drives the one-way gear to rotate. The rotation of the one-way gear drives the placement roller to rotate, so that the placement roller reels the broken copper wire. A sliding guide rod passing through the electric lifting frame is fixed to the L-shaped plate. A tensioning assembly is provided on the porous disk for tensioning the copper wire. A limiting assembly is provided on the electric lifting frame and the winding drum for pressing and limiting the broken copper wire.

[0007] Further explanation, the conveying assembly includes a horizontal plate symmetrically fixed to the bracket, the horizontal plate is located on both sides of the through hole, a movable frame is slidably connected to the horizontal plate, and an electric wheel is installed at the end of the movable frame to drive the single cable after twisting to move for transportation, and a connecting spring is connected between the movable frame and the horizontal plate.

[0008] Further explanation, the tensioning assembly includes a fixed plate fixed to the circumference of the porous disk at uniform intervals, and a guide wheel is rotatably connected to the fixed plate for guiding the copper wire. The outer side of the porous disk is fixed with a guide frame corresponding to the fixed plate at uniform intervals along the circumference, and an electric lifting plate is installed on the inner side of the guide frame. Pressure sensors are symmetrically installed on the electric lifting plate. The electric lifting frame, electric hollow tube and electric wheel are electrically connected to the pressure sensor through the control module. A pressure sensor is also installed on the fixed plate. The two outer pressure sensors are staggered with the inner pressure sensor. A tensioning wheel is installed on the pressure sensor for tensioning and guiding the copper wire.

[0009] Further explanation, the limit assembly includes contact plates fixed to the circumference of the wire drum at even intervals, the contact plates correspond to the circular holes of the wire drum, a vertical plate is slidably connected to the electric lifting frame, a compression spring is connected between the vertical plate and the electric lifting frame, and a limit wheel is rotatably connected to the vertical plate to compress and guide the broken copper wire.

[0010] Further explanation: the stranding equipment for polypropylene cable production also includes an adjustment component, which includes a horizontal frame fixed to the bracket, a slide slidingly connected to the inner side of the horizontal frame, a limit ring fixed to the slide for adjusting the stranding angle, the limit ring is located to the right of the through hole, a screw threadedly connected to the slide is rotatably passed through the horizontal frame, and a pulley is fixed on the end of the screw.

[0011] Further explanation, the stranding equipment for polypropylene cable production also includes a detection component, which includes a detection rod slidably connected to one of the horizontal plates to detect the twisting condition of the copper wire. A buffer spring is connected between the detection rod and one of the horizontal plates. A fixed block is fixed on the bracket, and a displacement sensor located directly above the detection rod is fixed on the fixed block. The electric wheel and the electric hollow tube are electrically connected to the displacement sensor through a control module.

[0012] Further explanation: the stranding equipment for polypropylene cable production also includes a ceramic ring fixed to the inner side of the circular hole of the stranding drum, which is used to protect the copper wire and the stranding drum.

[0013] To further illustrate, the stranding equipment for polypropylene cable production also includes an annular brush fixed to the circumference of the limiting ring for removing impurities on the copper wire.

[0014] The beneficial effects of the present invention are: 1. The stranding drum can drive the copper wire to rotate, and the copper wire is twisted on the central conductor, and the tensioning wheel can tighten the copper wire for twisting. When the copper wire breaks due to tension, the limiting wheel can press and limit the left copper wire where the break occurs. The electric lifting frame drives the placement roller to rotate through the rack and the one-way gear. The placement roller rotates to reel in the broken copper wire on the right side to prevent the broken copper wire from being entangled due to inertia and affecting subsequent use, thereby improving the subsequent stranding efficiency of the copper wire.

[0015] 2. Under the action of the detection rod, the twisting quality of a single cable can be detected, so that corresponding adjustments can be made in time according to the twisting quality, which can prevent the poor twisting quality of the copper wire from affecting the overall quality of the single cable, thereby ensuring the quality of the single cable.

[0016] 3. Under the action of the ceramic ring, the copper wire and the stranded wire drum can be guided and protected, which can prevent the strong friction between the copper wire and the stranded wire drum from causing damage, thereby ensuring the safety of the copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the porous disk and the stranded wire disk of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the conveying component, tensioning component and through hole of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting wheel and the one-way gear of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the compression spring of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the detection component of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the ceramic ring of the present invention.

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the annular brush of the present invention.

[0026] In the figure: 1. bracket, 2. electric hollow tube, 3. porous disk, 31. limit frame, 4. stranded wire drum, 5. through hole, 6. L-shaped plate, 7. placement roller, 8. horizontal plate, 81. movable frame, 82. connecting spring, 83. electric wheel, 9. fixed plate, 91. guide wheel, 92. guide frame, 93. electric lifting plate, 94. pressure sensor, 95. tensioning wheel, 10. fixed frame, 11. electric lifting frame, 12. guide rod, 14. rack, 15. one-way gear, 16. vertical plate, 161. limit wheel, 162. contact plate, 163. compression spring, 17. horizontal frame, 171. screw, 172. wheel disc, 173. slide plate, 174. limit ring, 18. detection rod, 181. buffer spring, 182. fixed block, 183. displacement sensor, 19. ceramic ring, 20. annular brush. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0028] Example: A stranding machine for producing polypropylene cables, see Figure 1-Figure 5As shown, it includes a bracket 1 and an electric hollow tube 2 installed on the upper right side of the bracket 1. A porous disk 3 is fixedly mounted on the right side of the outer side of the electric hollow tube 2. The right side of the porous disk 3 is evenly spaced along the circumference and connected to a limit frame 31 through damping rotation. The limit frame 31 can limit a roll of copper wire. Three L-shaped plates 6 are fixedly connected to the left side of the porous disk 3 at even intervals along the circumference. A placement roller 7 is rotatably connected on the L-shaped plate 6. The right end of the placement roller 7 is located in the hole of the porous disk 3. The placement roller 7 can realize the placement of copper wire. A winding drum 4 is fixedly sleeved on the left side of the outer side of the electric hollow tube 2. Three circular holes are opened on the winding drum 4 along the circumferential direction for the copper wire to pass through. A through hole 5 is opened at the center position of the upper left side of the bracket 1. It also includes a conveying component, a tensioning component, a fixed frame 10, an electric lifting frame 11, a guide rod 12, a rack 14, a one-way gear 15 and a limit component. A conveying component is provided on the left side of the bracket 1. When the conveying component is operated, the conveying component can drive the single cable after stranding to move to the left for transportation. The three placement rollers 7 are fixedly sleeved on the left side with a one-way gear 15. Three fixed frames 10 are fixedly connected to the outer side of the winding drum 4 at uniform intervals along the circumferential direction. An electric lifting frame 11 is installed on the inside of the fixed frame 10. A rack 14 is fixed on the right side of the electric lifting frame 11. The rack 14 is engaged with the one-way gear 15. The electric lifting frame 11 is used to drive the rack 14 to move inward, and the rack 14 drives the one-way gear 15 to rotate, and the one-way gear 15 rotates to drive the placement roller 7 rotates so that the placement roller 7 can reel in the broken copper wire. A guide rod 12 is fixed to the L-shaped plate 6. The guide rod 12 slides through the right side of the electric lifting frame 11. The guide rod 12 can guide the movement of the electric lifting frame 11. A tensioning assembly is provided on the porous disk 3. When the tensioning assembly is in operation, the tensioning assembly can tension the copper wire. A limiting assembly is provided on the electric lifting frame 11 and the stranding drum 4. When the limiting assembly is in operation, the limiting assembly can compress and limit the broken copper wire.

[0029] See also Figure 3 As shown, the conveying assembly includes a transverse plate 8, a movable frame 81, a connecting spring 82 and an electric wheel 83. The transverse plate 8 is symmetrically fixed to the upper and lower parts of the outer left side of the bracket 1. The transverse plate 8 is located on the upper and lower sides of the through hole 5. The left sides of the upper and lower transverse plates 8 are slidably connected with the movable frames 81. The ends of the upper and lower movable frames 81 close to each other are equipped with electric wheels 83. When the electric wheel 83 rotates, the electric wheel 83 can drive the single cable after twisting to move to the left for conveying. The upper and lower movable frames 81 are respectively connected to the left sides of the upper and lower transverse plates 8 with connecting springs 82.

[0030] See also Figure 3As shown, the tensioning assembly includes a fixed plate 9, a guide wheel 91, a guide frame 92, an electric lifting plate 93, a pressure sensor 94 and a tensioning wheel 95. Three fixed plates 9 are fixedly connected to the left side of the porous disk 3 at even intervals along the circumferential direction. The three fixed plates 9 are rotatably connected to the side away from each other, and the guide wheel 91 can guide the copper wire. Three guide frames 92 are fixedly connected to the outer side of the porous disk 3 at even intervals along the circumferential direction. The three guide frames 92 correspond to the three fixed plates 9 respectively. An electric lifting plate 93 is installed on the inner side of the guide frame 92. Pressure sensors 94 are symmetrically installed on the side where the three electric lifting plates 93 are close to each other. The electric lifting frame 11, the electric hollow tube 2 and the electric wheel 83 are all electrically connected to the pressure sensor 94 through the control module. A pressure sensor 94 is also installed on the left side of the fixed plate 9. The two outer pressure sensors 94 are staggered with the inner pressure sensor 94. A tensioning wheel 95 is installed on the pressure sensor 94. The tensioning wheel 95 can realize tensioning and guiding the copper wire.

[0031] See also Figure 4 and Figure 5 As shown, the limiting assembly includes a vertical plate 16, a limiting wheel 161, a contact plate 162 and a compression spring 163. Three contact plates 162 are fixedly connected to the right side of the winding drum 4 at even intervals along the circumferential direction. The three contact plates 162 respectively correspond to the three circular holes on the winding drum 4. The left sides of the three electric lifting frames 11 are all slidably connected to the vertical plates 16. A compression spring 163 is connected between the outer side of the vertical plates 16 and the left side of the electric lifting frame 11. The three vertical plates 16 are rotatably connected to the limiting wheels 161 near the contact plates 162. When the limiting wheels 161 move inward and contact the broken copper wire, the limiting wheels 161 can compress and guide the broken copper wire.

[0032] First, pass the center wire end through the electric hollow tube 2 and the through hole 5 between the upper and lower electric wheels 83, then pull the three limit frames 31 to swing to the right to open, then pass the three rolls of copper wire through the porous disk 3 and put them on the three placement rollers 7 respectively, pull the three limit frames 31 to swing to the left to reset and limit the placed copper wire, pull the copper wire head end around the top of the guide wheel 91 and the bottom of the inner tensioning wheel 95, and then make the copper wire head end pass through the circular hole of the stranding drum 4, the through hole 5 and the upper and lower electric wheels 83, and then start the electric lifting plate 93 to move inward. The electric lifting plate 93 moves inward and drives the outer tensioning wheel 95 to move inward through the pressure sensor 94. The outer tensioning wheel 95 moves inward and cooperates with the inner tensioning wheel 95 to tension the copper wire so that the copper wire reaches a sufficient tension. In order to obtain a high-quality stranding effect, the pressure sensor 94 detects the force of the steel wire tensioning through the tensioning wheel 95. When the force detected by the pressure sensor 94 reaches the required force, the electric lifting plate 93 is closed, the outer tensioning wheel 95 stops moving inward, and the electric hollow tube 2 is started to rotate. The electric hollow tube 2 drives the porous disk 3 to rotate, and the porous disk 3 drives the copper wire to rotate through the L-shaped plate 6 and the placement roller 7. At the same time, the electric hollow tube 2 also drives the winding drum 4 to rotate. The rotation of the winding drum 4 rotates synchronously with the porous disk 3. The rotation of the winding drum 4 drives the three copper wires to rotate and glue them on the central conductor to form a single cable. At this time, the upper and lower electric wheels 83 are started to rotate. The rotation of the upper and lower electric wheels 83 drives the single cable formed by the stranded wire to move to the left, and makes the center The wire continuously moves to the left and the twisted copper wire completes the twisting process. Due to the action of the connecting spring 82, the electric wheel 83 is in closer contact with the single cable for transportation. When the copper wire breaks due to tension during the twisting process, the force detected by the pressure sensor 94 through the tensioning wheel 95 deviates from the set force. The pressure sensor 94 controls the electric hollow tube 2 and the electric wheel 83 to be closed through the control module. The electric hollow tube 2 stops driving the porous disk 3 and the stranding disk 4 to rotate. At the same time, the pressure sensor 94 also controls the electric lifting frame 11 to move upward through the control module. The electric lifting frame 11 moves upward and drives the vertical plate 16 to move inward through the compression spring 163. The inward movement of the vertical plate 16 drives the limiting wheel 161 to move inward. The inward movement of the limiting wheel 161 is in line with the The contact plate 162 cooperates to press the broken left copper wire to a limit position, the limiting wheel 161 stops moving inward, and the electric lifting frame 11 continues to move upward to compress the compression spring 163. The electric lifting frame 11 moves upward and also drives the rack 14 to move upward. The rack 14 moves upward to drive the one-way gear 15 to rotate. The rotation of the one-way gear 15 drives the placement roller 7 to rotate. The placement roller 7 rotates to reel up the broken right copper wire to prevent the broken copper wire from being entangled due to inertia and affecting subsequent use, thereby improving the subsequent stranding efficiency of the copper wire. Then the electric lifting frame 11 is started to move downward and reset. The electric lifting frame 11 moves downward to reset the compression spring 163 first, and then the electric lifting frame 11 drives the vertical plate 16 to move downward through the compression spring 163.The vertical plate 16 drives the limiting wheel 161 downward, which releases the broken copper wire on the left side. The electric lifting frame 11 also drives the rack 14 downward. The rack 14 moves downward, causing the one-way gear 15 to idle. At this time, the placement roller 7 will not rotate. At the same time, the electric lifting plate 93 is activated to move outward and reset, driving the outer tensioning wheel 95 outward and reset through the outer pressure sensor 94. Then, the electric wheel 83 is activated to drive the copper wire on the left side to move left and disengage from the winding drum 4 and the through hole 5. The copper wire end on the placement roller 7 is then passed through the circular hole of the winding drum 4 and the through hole 5 according to the above operation and placed between the upper and lower electric wheels 83. The stranding operation can then be continued according to the above operation. Once all the copper wires are twisted together with the center conductor to form a single cable, the single cable can be used later.

[0033] See also Figure 6 As shown, the stranding equipment for polypropylene cable production also includes an adjustment component installed on the bracket 1, the adjustment component includes a horizontal frame 17, a screw 171, a pulley 172, a slide 173 and a limit ring 174, the horizontal frame 17 is fixedly connected to the upper left side of the bracket 1, the slide 173 is slidably connected to the inner side of the horizontal frame 17, and the top of the slide 173 is fixedly connected to the limit ring 174. When the limit ring 174 moves left and right, the limit ring 174 can adjust the stranding angle. The limit ring 174 is located on the right side of the through hole 5, and a screw 171 is rotatably connected to the horizontal frame 17. The screw 171 is threadedly connected to the lower part of the slide 173, and the left end of the screw 171 is fixedly sleeved with a pulley 172.

[0034] See also Figure 7 As shown, the stranding equipment for polypropylene cable production also includes a detection component installed between the bracket 1 and the horizontal plate 8, the detection component includes a detection rod 18, a buffer spring 181, a fixed block 182 and a displacement sensor 183, and the detection rod 18 is vertically slidably connected to the right side of the upper horizontal plate 8. The detection rod 18 can detect the twisting of the copper wire, and a buffer spring 181 is connected between the lower part of the detection rod 18 and the right side of the bottom of the upper horizontal plate 8. A fixed block 182 is fixedly connected to the left side of the top of the bracket 1, and a displacement sensor 183 is fixedly connected to the left side of the fixed block 182. The displacement sensor 183 is located directly above the detection rod 18, and the electric wheel 83 and the electric hollow tube 2 are electrically connected to the displacement sensor 183 through the control module.

[0035] When the end of the copper wire passes through the circular hole of the stranding drum 4, the end of the copper wire passes through the limit ring 174 and then passes through the through hole 5 and is between the upper and lower electric wheels 83. Then, the wheel plate 172 is twisted to rotate alternately forward and reverse. The wheel plate 172 rotates alternately forward and reverse to drive the screw 171 to rotate alternately forward and reverse. The screw 171 drives the slide plate 173 to move left and right. The slide plate 173 moves left and right to drive the limit ring 174 to move left and right. The limit ring 174 moves left and right to apply pressure on the copper wire, so that the angle between the copper wire and the center conductor changes. When the copper wire is adjusted to the required twisting angle, the wheel plate 172 is stopped from twisting, the wheel plate 172 stops driving the screw 171 to rotate, the screw 171 stops driving the slide plate 173 to move left and right, and the slide plate 173 stops driving the limit ring 174 to move left and right. Then, when the copper wire rotates and moves to the left for stranding, the limit ring 174 guides and limits the copper wire, so that the copper wire is stranded according to the required stranding angle. In this way, the copper wires can be twisted according to the required twisting angle, thereby improving adaptability.

[0036] When the copper wire and the center conductor are twisted into a single cable, the single cable moves to the left and contacts the detection rod 18. Since the single cable is twisted by copper wires, due to the action of the buffer spring 181, the single cable moves to the left and drives the detection rod 18 to move up and down. The displacement sensor 183 detects the distance the detection rod 18 moves up and down. The detection rod 18 detects the quality of the copper wire twisting on the single cable. When the distance the detection rod 18 moves up and down exceeds the value set by the displacement sensor 183, the displacement sensor 183 controls the electric wheel 83 and the electric hollow tube 2 to close through the control module. At this time, it means that the copper wire twisting effect is not good and needs to be adjusted. In this way, the poor quality of the copper wire twisting can be prevented from affecting the overall quality of the single cable, thereby ensuring the quality of the single cable.

[0037] See also Figure 8 As shown, the stranding equipment for polypropylene cable production further includes a ceramic ring 19 , which is fixedly connected to the inner side of the circular hole of the stranding drum 4 . The ceramic ring 19 can protect the copper wire and the stranding drum 4 .

[0038] See also Figure 9 As shown, the stranding equipment for polypropylene cable production also includes an annular brush 20. The right side of the limiting ring 174 is fixedly connected with the annular brush 20 along the circumferential direction. The annular brush 20 can remove impurities on the copper wire.

[0039] When the copper wire passes through the round hole of the stranding drum 4, the copper wire contacts the ceramic ring 19, and then when the copper wire moves to the left and rotates to be stranded, the ceramic ring 19 guides the copper wire. The ceramic ring 19 protects the copper wire and the stranding drum 4, thus preventing the strong friction between the copper wire and the stranding drum 4 from causing damage, thereby ensuring the safety of the copper wire.

[0040] When the copper wire passes through the limiting ring 174, the copper wire contacts the annular brush 20, and then when the copper wire moves to the left and rotates to be twisted, the annular brush 20 can remove impurities attached to the copper wire. In this way, a large amount of impurities attached to the copper wire can be prevented from affecting subsequent twisting, thereby further ensuring the quality of the copper wire twisting.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stranding device for polypropylene cable production, comprising a bracket (1) and an electric hollow tube (2) mounted on the bracket (1), a porous disk (3) fixedly mounted on the electric hollow tube (2), a limit frame (31) connected to the porous disk (3) at even intervals along the circumference through a damping rotation, an L-shaped plate (6) fixedly mounted on the porous disk (3) at even intervals along the circumference, a placement roller (7) rotatably connected to the L-shaped plate (6), a stranding drum (4) fixedly mounted on the electric hollow tube (2), and a through hole (5) opened on the bracket (1), characterized in that: The invention also includes a conveying assembly arranged on the bracket (1) for driving the single cable after stranding to move for conveying, a one-way gear (15) is fixedly mounted on the placement roller (7), a fixed frame (10) is fixedly connected to the outer side of the stranding drum (4) at uniform intervals along the circumferential direction, an electric lifting frame (11) is installed inside the fixed frame (10), a rack (14) meshing with the one-way gear (15) is fixedly connected to the electric lifting frame (11), and the electric lifting frame (11) is used to drive the rack ( 14) moves inward, the rack (14) drives the one-way gear (15) to rotate, and the rotation of the one-way gear (15) drives the placement roller (7) to rotate, so that the placement roller (7) can reel in the broken copper wire. A guide rod (12) that slides through the electric lifting frame (11) is fixed to the L-shaped plate (6). A tensioning assembly is provided on the porous disk (3) for tensioning the copper wire. A limiting assembly is provided on the electric lifting frame (11) and the stranding drum (4) for pressing and limiting the broken copper wire.

2. A stranding equipment for polypropylene cable production according to claim 1, characterized in that: The conveying assembly includes a transverse plate (8) symmetrically fixed to the bracket (1), the transverse plate (8) is located on both sides of the through hole (5), a movable frame (81) is slidably connected to the transverse plate (8), and an electric wheel (83) is installed at the end of the movable frame (81) for driving the single cable after twisting to move for conveying, and a connecting spring (82) is connected between the movable frame (81) and the transverse plate (8).

3. A stranding equipment for polypropylene cable production according to claim 2, characterized in that: The tensioning assembly includes a fixed plate (9) fixed to the circumference of the porous disk (3) at uniform intervals, a guide wheel (91) rotatably connected to the fixed plate (9) for guiding the copper wire, a guide frame (92) corresponding to the fixed plate (9) fixed to the outer side of the porous disk (3) at uniform intervals along the circumference, an electric lifting plate (93) is installed on the inner side of the guide frame (92), and a pressure sensor (94) is symmetrically installed on the electric lifting plate (93), the electric lifting frame (11), the electric hollow tube (2) and the electric wheel (83) are all electrically connected to the pressure sensor (94) through a control module, and a pressure sensor (94) is also installed on the fixed plate (9), and the two outer pressure sensors (94) are staggered with the inner pressure sensor (94), and a tensioning wheel (95) is installed on the pressure sensor (94) for tensioning and guiding the copper wire.

4. A stranding equipment for polypropylene cable production according to claim 3, characterized in that: The limiting assembly includes contact plates (162) fixed to the circumference of the winding drum (4) at uniform intervals, the contact plates (162) corresponding to the circular holes of the winding drum (4), a vertical plate (16) slidably connected to the electric lifting frame (11), a compression spring (163) connected between the vertical plate (16) and the electric lifting frame (11), and a limiting wheel (161) rotatably connected to the vertical plate (16) for pressing and guiding the broken copper wire.

5. A stranding equipment for producing polypropylene cables according to claim 4, characterized in that: The stranding equipment for polypropylene cable production also includes an adjustment component, which includes a horizontal frame (17) fixedly connected to the bracket (1), a slide plate (173) slidably connected to the inner side of the horizontal frame (17), a limit ring (174) fixedly connected to the slide plate (173) to adjust the angle of the stranded wire, the limit ring (174) is located on the right side of the through hole (5), a screw rod (171) threadedly connected to the slide plate (173) is rotatably passed through the horizontal frame (17), and a wheel disc (172) is fixedly sleeved on the end of the screw rod (171).

6. A stranding equipment for producing polypropylene cables according to claim 5, characterized in that: The stranding equipment for polypropylene cable production also includes a detection component, which includes a detection rod (18) slidably connected to one of the horizontal plates (8) to detect the twisting of the copper wires. A buffer spring (181) is connected between the detection rod (18) and one of the horizontal plates (8). A fixed block (182) is fixedly connected to the bracket (1). A displacement sensor (183) located directly above the detection rod (18) is fixedly connected to the fixed block (182). The electric wheel (83) and the electric hollow tube (2) are both electrically connected to the displacement sensor (183) through a control module.

7. A stranding equipment for producing polypropylene cables according to claim 6, characterized in that: The stranding equipment for producing polypropylene cables further comprises a ceramic ring (19) fixed to the inner side of a circular hole of a stranding drum (4) for protecting the copper wire and the stranding drum (4).

8. A stranding equipment for producing polypropylene cables according to claim 7, characterized in that: The stranding equipment for producing polypropylene cables further comprises an annular brush (20) fixed to the circumference of a limiting ring (174) for removing impurities on the copper wire.

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