CN102136324B - Horizontal winding machine - Google Patents

Abstract

The invention relates to a production equipment of cables and wires, in particular to a winding machine used for winding and tape-wrapping in the production of ultra-fine coaxial cables. It includes back-twisting pay-off machine (1), plain wire pay-off machine (2), incoming line splitter board (3), die eye (4), conductor tape device (5), insulation Taping device (6), drawing machine (9) and coiling machine (10), described untwisting pay-off machine (1), plain wire pay-off machine (2), incoming line splitter board (3), mold The centerlines of the eye (4), the conductor tape device (5), the insulation tape device (6), the drawing machine (9) and the coiler (10) are on the same horizontal line, and the conductor tape device (5) A first tape unwinding device (7) is arranged below, and a second tape unwinding device (8) is arranged below the insulating tape device (6). The horizontal winding machine of the present invention has the advantages of convenient operation, stable plain thread pay-off, adjustable take-up row spacing, simultaneous completion of two processes of oblique wrapping and winding, and high production efficiency.

Description

A horizontal winding machine

technical field

The invention relates to a production equipment of cables and wires, in particular to a winding machine used for winding and tape-wrapping in the production of ultra-fine coaxial cables. the

Background technique

Ultra-thin coaxial cable is a kind of tiny wire with excellent bending resistance and twist resistance. It is suitable for the connection of rotating, folding and other parts of portable equipment. It has good high-speed signal transmission and good shielding function. With the innovation of the market, the miniaturization of electronic products, the integration of signal transmission, etc., the enhancement of anti-interference, and the requirements of environmental resistance, the products of ultra-thin coaxial cables are more and more favored by the market. Recently, micro-coaxial cables have been widely used in notebook computers, medical equipment, digital cameras, and mobile phones. Ultra-thin coaxial cable products can guarantee high-speed data transmission in the range below 60GHz, and its bending resistance is 7~10 times that of FFC products. It is believed that ultra-fine coaxial cable products will completely replace FFC products and enter the market in the near future. market.

Before the present invention was made, the winding machines currently used for the production of ultra-fine coaxial cables had the following disadvantages:

1. The existing winding machine is a vertical structure, the operating space is small, and it is inconvenient for the operator to operate due to height restrictions.

2. The existing winding machine pays off by rotating the reel to achieve untwisting. The core wire is easily affected by centrifugal force, resulting in unstable pay-off tension. The pay-off speed of the winding machine is limited, thus affecting the production of ultra-fine coaxial cables efficiency.

3. The pay-off tension of the existing winding machine will change with the size of the coil on the reel during the pay-off process.

changes, resulting in instability of the plain line pay-off process.

4. The coiler of the existing winding machine adopts a wire arranging device to take up the wire, the row distance cannot be adjusted, and the take-up speed is not stable.

It can be too high, otherwise the ultra-thin coaxial cable moves back and forth on the cable arrangement at high speed, which will cause unstable tension of the take-up line

As a result, the winding effect is not good, which limits the improvement of the production efficiency of the ultra-fine coaxial cable.

5. The existing winding machine must first wind the ultra-fine coaxial line before performing the oblique wrapping process. The winding and oblique

Package is finished by two mechanical equipments, and equipment cost is higher, and production efficiency is low.

Contents of the invention

The purpose of the present invention is to overcome the above disadvantages, to provide an easy-to-operate, stable wire pay-off process, adjustable take-up row distance, can complete two processes of winding and oblique wrapping at the same time, and can effectively improve the production of ultra-fine coaxial wires. High efficiency horizontal winding machine.

The purpose of the present invention is achieved in this way: a horizontal winding machine, which is characterized in that it includes a back-twisting pay-off machine, a plain wire pay-off machine, an incoming line splitter plate, a die eye, a conductor Taping device, insulating tape device, drawing machine and coiling machine, the untwisting pay-off machine, plain wire pay-off machine, incoming line splitter board, die eye, conductor tape device, insulating tape device, drawing-out The centerlines of the machine and the coiler are on the same horizontal line, a first tape unwinding device is provided below the conductor tape device, and a second tape unwind device is provided below the insulating tape device.

The back-twisting pay-off machine includes a protective cover, bearing blocks I are arranged at both ends of the protective cover, a main shaft is respectively arranged on the two bearing seats I, and a pulley and an external conductive ring are respectively arranged on the outer ends of the two main shafts, and the pulley The outer conductive ring and the outer conductive ring are located outside the protective cover. A cradle frame fixing seat is arranged at the inner end of the two main shafts. A cradle frame is connected between the two cradle frame fixing seats. A guide wheel II is arranged in the middle of the two main shafts. There is the bow fixing seat I, the bow fixing seat II is provided with the guide wheel I, and the other main shaft is also provided with the bow fixing seat II and the inner conductive ring, and the inner conductive ring is located at the bow fixing seat II and the inner end of the cradle Between the fixed seats, there is a twisted bow connected between the twisted bow fixed seat I and the twisted bow fixed seat II. There are multiple wire-passing magnetic eyes on the twisted bow. The cable reel clamping device and magnetic powder brake are installed on the cradle frame. A cable tray is arranged on the clamping device, and a photoelectric sensor is arranged inside the protective cover. the

The plain thread pay-off machine includes a plain thread pay-off stand and several plain thread pay-off loading devices, the plain thread pay-off loading device includes a pay-off stand, one side of the pay-off stand is provided with a base, and the top of the base is A screw is provided, the bottom of the screw is connected with a spring I, the middle part of the base is provided with a rotary seat, and a bearing I is arranged inside the rotary seat, one end of a rotary shaft is installed on the rotary seat through the bearing I, the other end of the rotary shaft is a cantilever structure, and the rotary shaft The upper sleeve is equipped with a thread guide roller and a tension rod, the bottom of the spring I is connected with the tension rod, the lower part of the base is provided with a bearing seat II, and the inner part of the bearing seat II is provided with a bearing II, and the end of the cable shaft is installed on the bearing seat through the bearing II On II, the other end of the spool shaft is in a cantilever structure. The spool shaft is equipped with induction iron sheets, brake discs, rubber pads, sliding sleeves and locking plates in sequence. The brake disc and tension rod are connected by a brake belt, and the sliding sleeve A collet and a spring II are arranged, and an induction switch seat is arranged on the other side of the pay-off frame, the induction switch seat is located under the bearing seat II, and an induction switch is arranged on the induction switch seat.

The coiler includes a reel moving device, and the reel moving device includes a box wall I and a box wall II, and a shaft support is respectively arranged on the same horizontal line of the box body wall I and the box body wall II, and between the two shaft supports A mandrel II is arranged between them, and two linear bearings are arranged on the mandrel II, and a flat plate is arranged on the two linear bearings, a bracket II and a bearing seat III are arranged on the flat plate, a clutch is arranged on the bracket II, and a clutch is arranged on the bearing seat III. A coupling is connected between the rotating shaft, the clutch and the rotating shaft, a thimble and a wire reel lock are arranged on the rotating shaft, a take-up reel is arranged between the thimble and the reel lock, and a bracket I is arranged on the lower part of the box wall II, and one end of the bracket I is fixed On the box wall II, the other end of the bracket I is fixedly connected with a fixed plate, the fixed plate is provided with a motor, the motor is located under the bracket I, the output end of the motor is provided with a pulley II, and the bracket I is provided with two supports. The two supports are respectively located on both sides of the support I, the two supports are provided with a mandrel I, one end of the mandrel I passes through a seat, and the end of the mandrel I is provided with a pulley I, and the mandrel I is provided with a row The cable puller is located between the two supports, the pulley II and the pulley I are connected by a belt, and a connecting rod is fixedly connected between the cable puller and a linear bearing.

Compared with prior art, the beneficial effect of the present invention is:

1. A horizontal winding machine platform of the present invention is arranged in a horizontal structure, which has a larger operating space and is more convenient to operate.

2. The untwisting pay-off machine of a horizontal winding machine of the present invention realizes the untwisting of the core wire in the way of twisting bow rotation, the pay-off tension is relatively stable, the pay-off speed can be further improved, and it is beneficial to improve production efficiency.

3. The plain thread pay-off loading device of a horizontal winding machine of the present invention is equipped with a tension balance mechanism, the plain thread pay-off process is relatively stable, and the winding effect is better.

4. The coiler of a horizontal winding machine of the present invention realizes the wire arrangement by reciprocating movement of the wire reel when taking up the wire. The row distance is adjustable and the take-up tension is stable. The take-up speed can be further improved, which is conducive to improving production efficiency .

5. A horizontal winding machine of the present invention can complete the two processes of oblique wrapping and winding at the same time, the equipment cost is low, and the production efficiency is high.

Description of drawings

Fig. 1 is a schematic view of the front structure of a horizontal winding machine of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the untwisting pay-off machine of the present invention.

Fig. 3 is a front view of the plain wire pay-off device of the present invention.

Fig. 4 is a right side view of Fig. 3 .

Fig. 5 is a structural schematic diagram of the wire reel moving device of the coiler of the present invention.

in:

Back-twisting pay-off machine 1, plain wire pay-off machine 2, incoming line splitter plate 3, die eye 4, conductor tape device 5, insulation tape device 6, first tape unwinding device 7, second tape Unwinding device 8, pulling machine 9, coiling machine 10, pulley 101, bearing seat I102, guide wheel I103, winch bow fixing seat I104, wire passing magnetic eye 105, wire reel clamping device 106, wire reel 107, winch bow 108, cradle frame fixing seat 109, external conductive ring 110, internal conductive ring 111, cradle frame 112, magnetic powder brake 113, photoelectric sensor 114, main shaft 115, protective cover 116, guide wheel II117, twisted bow fixing seat II118, screw 201 , Tension adjustment nut 202, base 203, spring I204, thread guide roller 205, slewing seat 206, slewing shaft 207, bearing I208, tension rod 209, induction iron sheet 210, brake band 211, spool shaft 212, bearing II213 , bearing seat II214, induction switch 215, induction switch seat 216, brake disc 217, rubber pad 218, sliding sleeve 219, chuck 220, spring II221, locking piece 222, pay-off frame 223, box wall I301, fixed plate 302, motor 303, support I304, support 305, box wall II306, shaft support 307, mandrel I308, cable arrangement 309, flat plate 310, connecting rod 311, mandrel II312, linear bearing 313, support II314, clutch 315, coupling 316, bearing block III317, thimble 318, take-up reel 319, cantilever 320, reel lock 321, cradle frame 322, pulley I323, belt 324, pulley II325, bearing block IV326, rotating shaft 327.

Detailed ways

Referring to Fig. 1, a kind of horizontal winding machine that the present invention relates to, it comprises untwisting wire pay-off machine 1, plain wire pay-off machine 2, incoming wire splitter board 3, die hole 4, conductor wrapping machine arranged in sequence along the horizontal direction Tape device 5, insulating taping device 6, drawing machine 9 and coiling machine 10, said untwisting pay-off machine 1, plain wire pay-off machine 2, incoming line splitter plate 3, die eye 4, conductor taping device 5. The centerlines of the insulating tape device 6, the drawing machine 9 and the coiler 10 are on the same horizontal line, a first tape unwinding device 7 is arranged below the conductor tape device 5, and a first tape unwinding device 7 is arranged below the insulating tape device 6. A second tape unwinding device 8 is arranged. The core wire of the ultra-fine coaxial line is rotated under the action of the drawing machine 9, and the untwisted pay-off machine 1 passes the untwisted core wire through the plain wire pay-off machine 2 in the horizontal direction, and connects with the plain wire pay-off machine The plain wires on the multiple wire reels on the 2 enter the line distribution board 3 together, and the core wires and multiple plain wires gather together at the die hole 4 and are entangled together under the rotation of the core wires to form a wire harness. After passing through the die hole 4, under the action of the conductor tape device 5 and the insulation tape device 6, the periphery of the wire harness is covered with a layer of conductor layer and insulation layer. Wire reel.

Referring to Fig. 2 , the twist-back pay-off machine 1 includes a protective cover 116, bearing seats I102 are arranged at both ends of the protective cover 116, and a main shaft 115 is arranged on each of the two bearing seats I102, and the main shaft 115 is opened along the axial direction. There is a central hole, and the outer ends of the two main shafts 115 are respectively provided with a pulley 101 and an external conductive ring 110, and the pulley 101 and the external conductive ring 110 are located outside the protective cover 116, and a cradle frame fixing seat 109 is provided at the inner ends of the two main shafts 115, A cradle frame 112 is connected between the two cradle frame fixing seats 109, a guide wheel II117 is arranged between the two main shafts 115, and a twisting bow fixing seat I104 is arranged on one of the main shafts 115, and a guiding wheel I103 is arranged on the twisting bow fixing seat II104 , the other main shaft 115 is also provided with a twisted bow fixing seat II118 and an internal conductive ring 111, the inner conductive ring 111 is located between the twisted bow fixing seat II118 and the inner end cradle frame fixing seat 109, the twisted bow fixing seat I104 and the twisted bow are fixed A twisted bow 108 is connected between the seats II118, and a plurality of wire-passing magnetic eyes 105 are arranged on the twisted bow 108. A cable reel clamping device 106 and a magnetic powder brake 113 are arranged on the cradle frame 112, and a cable reel clamping device 106 is provided with a cable reel 107 , a photoelectric sensor 114 is further provided inside the protective cover 116 . After the core wire comes out from the reel, it passes through the center hole of a main shaft 115, the guide wheel II117 on the first main shaft 115, the multiple wire passing magnetic eyes 10 on the twisted bow 108, the guide wheel I103, and the guide wheel on the other main shaft 115. II117, the center hole of another main shaft 115, finally passes through the center hole and reaches the outside of the pay-off machine. The core wire rotates around the main shaft 115 together with the twist bow 108 on the twist bow 108 to realize the untwisting of the core wire. Because the core wire is bound to the twist bow 108 through a plurality of wire-passing magnetic eyes 105, its centrifugal force can be effectively controlled, so The pay-off speed can be further improved, so as to achieve the purpose of improving production efficiency.

The plain thread pay-off machine 2 includes a plain thread pay-off rack and several plain thread pay-off loading devices, and the plain thread pay-off loading devices are evenly distributed on the plain thread pay-off rack according to inner and outer circles. Referring to Fig. 3 and Fig. 4, the said plain thread pay-off loading device includes a pay-off frame 223, and a base 203 is arranged on one side of the pay-off frame 223,

The top of the base 203 is provided with a screw 201, the screw 201 is fixed on the base 203 by a tension adjustment nut 202, the bottom of the screw 201 is connected with a spring I204, and the middle part of the base 203 is provided with a swivel seat 206,

A bearing I208 is arranged inside the revolving base 206, and one end of a revolving shaft 207 is installed on the revolving base 206 through the bearing I208. The other end of the revolving shaft 207 is in a cantilever structure. The bottom of I204 is connected with the tension rod 209, the lower part of the base 203 is provided with a bearing seat II214, and the inner part of the bearing seat II214 is provided with a bearing II213, and one end of the cable reel shaft 212 is installed on the bearing seat II214 through the bearing II213, and the other end of the reel shaft 212 It is a cantilever structure, and the reel shaft 212 is provided with an induction iron plate 210, a brake disc 217, a rubber pad 218, a sliding sleeve 219 and a locking plate 222 in sequence. 219 is provided with collet 220 and spring II221, and the other side of pay-off rack 223 is provided with induction switch seat 216, and induction switch seat 216 is positioned at bearing seat II214 below, and induction switch seat 216 is provided with induction switch 215. When the plain thread is unwound, the wire has a pulling force on the wire passing guide roller 205, and the pulling force is transmitted to the tension rod 209 through the wire passing guide roller 205, and the tension rod 209 is also subjected to the reverse pulling force of the spring I204. When the wire pulling force distance is greater than the initial state During the reverse torque of the spring I204, the tension rod 209 will pull the spring I204 to rotate a certain angle along the direction of the wire rod tension, and now the brake band 211 releases the brake disc 217, and the wire rod pulls the reel to rotate and starts to pay off normally. During the pay-off process, as the coil on the reel gradually decreases, the tension of the wire will gradually increase. At this time, the tension distance will gradually increase. The spring I204 will provide a force that is always balanced with the tension distance of the wire as the tension distance increases. The reverse torque ensures that the pay-off process is always stable.

Referring to Fig. 5, the coiler 10 includes a reel moving device, the reel moving device includes a box wall I301 and a box wall II306, the upper part of the box wall I301 is provided with a bearing seat IV326, and a cradle frame is provided on the bearing seat IV326 322, a cantilever 320 is provided on the cradle frame 322, a shaft support 307 is respectively arranged on the same horizontal line of the box body wall I301 and the box body wall II306, and a mandrel II312 is arranged between the two shaft supports 307, and two shafts II312 are arranged on the mandrel II312. A linear bearing 313, two linear bearings 313 are provided with a plate 310, a bracket II314 and a bearing seat III317 are provided on the plate 310, a clutch 315 is provided on the support II314, a rotating shaft 327 is provided on the bearing seat III317, the clutch 315 and the rotating shaft 327 A shaft coupling 316 is connected between them, a thimble 318 and a reel lock 321 are arranged on the rotating shaft 327, a take-up reel 319 is arranged between the thimble 318 and the reel lock 321, a bracket I304 is provided on the lower part of the box wall II306, and a bracket I304 One end is fixed on the box wall II306 by bolts, the other end of the bracket I304 is fixedly connected with a fixed plate 302, the fixed plate 302 is provided with a motor 303, the motor 303 is located under the bracket I304, the output end of the motor 303 is provided with a pulley II325, and the bracket I304 Two supports 305 are arranged on it, and the two supports are respectively located on both sides of the support I304. The two supports 305 are provided with a mandrel I308. One end of the mandrel I308 passes through a support 305, and the end of the mandrel I308 passes through a set There is a pulley I323, and the mandrel I308 is provided with a cable deflector 309, the cable deflector 309 is located between two bearings 305, the pulley II325 and the pulley I323 are connected by a belt 324, the cable deflector 309 and the A connecting rod 311 is fixedly connected between the line bearings 313 . When the coiler 10 takes up the wire, the cradle frame 322 drives the cantilever 320 to rotate so that the wire is wound onto the take-up reel 319, and at the same time, the motor 303 drives the wire deflector 309 to move back and forth on the mandrel I308 through a belt transmission, and the wire deflector 309 passes through The connecting rod 311 drives the linear bearing 313 to move synchronously on the mandrel II312, thereby realizing the reel 319 to move back and forth to complete the cable arrangement.

Claims (4)

1. A horizontal winding machine, characterized in that: it includes a back-twisting pay-off machine (1), a plain wire pay-off machine (2), an incoming line splitter plate (3), and a die eye arranged in sequence along the horizontal direction. (4), conductor taping device (5), insulating taping device (6), drawing machine (9) and coiler (10), described untwisting pay-off machine (1), plain wire pay-off machine ( 2), the center lines of the incoming line distribution board (3), the die eye (4), the conductor tape device (5), the insulation tape device (6), the drawing machine (9) and the coiling machine (10) are at On the same horizontal line, a first tape unwinding device (7) is provided below the conductor tape device (5), and a second tape unwind device (8) is provided below the insulating tape device (6). The untwisting pay-off machine (1) includes a protective cover (116), and bearing seats I (102) are arranged at both ends of the protective cover (116), and a main shaft (115) is respectively arranged on the two bearing seats I (102), The outer ends of the two main shafts (115) are respectively provided with pulleys (101) and external conductive rings (110). A cradle frame holder (109) is arranged at each end, a cradle frame (112) is connected between the two cradle frame holders (109), a guide wheel II (117) is arranged in the middle of the two main shafts (115), and one of the main shafts ( 115) is also provided with the twisted bow holder I (104), the twisted bow holder I (104) is provided with the guide wheel I (103), and the other main shaft (115) is also provided with the twisted bow holder II (118 ) and the inner conductive ring (111), the inner conductive ring (111) is located between the twisted bow holder II (118) and the inner end cradle stand holder (109), the twisted bow holder I (104) and the twisted bow holder A twisted bow (108) is connected between the IIs (118), and multiple wire-passing magnetic eyes (105) are arranged on the twisted bow (108), and a cable reel clamping device (106) and a magnetic powder brake are arranged on the cradle frame (112) (113), the wire reel clamping device (106) is provided with a wire reel (107), and the inner side of the protective cover (116) is also provided with a photoelectric sensor (114). 2. A kind of horizontal winding machine according to claim 1, characterized in that: the plain thread pay-off machine (2) comprises a plain thread pay-off frame and several plain thread pay-off loading devices, the plain thread The wire pay-off loading device comprises a pay-off rack (223), a base (203) is arranged on one side of the pay-off rack (223), a screw rod (201) is arranged on the top of the base (203), and a spring is connected to the bottom of the screw rod (201). I (204), the middle part of the base (203) is provided with a swivel seat (206), and the interior of the swivel seat (206) is provided with a bearing I (208), and one end of a rotary shaft (207) is installed on the swivel seat through the bearing I (208) (206), the other end of the rotary shaft (207) is a cantilever structure, and the rotary shaft (207) is covered with a thread guide roller (205) and a tension rod (209), and the spring I (204) bottom and the tension rod (209) The lower part of the base (203) is provided with a bearing seat II (214), and the inner part of the bearing seat II (214) is provided with a bearing II (213), and one end of the cable shaft (212) is installed on the bearing On the seat II (214), the other end of the reel shaft (212) is in a cantilever structure, and the reel shaft (212) is successively provided with an induction iron sheet (210), a brake disc (217), a rubber pad (218), and a sliding sleeve (219) and locking plate (222), the brake disc (217) is connected with the tension bar (209) through the brake band (211), and the chuck (220) and spring II (221) are arranged on the sliding sleeve (219) , the other side of the pay-off frame (223) is provided with an induction switch seat (216), the induction switch seat (216) is located below the bearing seat II (214), and the induction switch seat (216) is provided with an induction switch (215). 3. A kind of horizontal winding machine according to claim 1, is characterized in that: described coiler (10) comprises wire reel moving device, and wire reel moving device comprises box body wall 1 (301) and box body wall II (306), the box wall I (301) and the box wall II (306) are respectively provided with a shaft support (307) on the same horizontal line, and a mandrel II (312) is arranged between the two shaft supports (307), The spindle II (312) is provided with two linear bearings (313), the two linear bearings (313) are provided with a flat plate (310), and the flat plate (310) is provided with a bracket II (314) and a bearing seat III (317). ), a clutch (315) is arranged on the bracket II (314), a rotating shaft (327) is arranged on the bearing seat III (317), a coupling (316) is connected between the clutch (315) and the rotating shaft (327), and the rotating shaft (327) is provided with thimble (318) and wire reel lock (321), is provided with take-up reel (319) between thimble (318) and wire reel lock (321), and box body wall II (306) bottom is provided with Support I (304), one end of support I (304) is fixed on the casing wall II (306), and the other end of support I (304) is fixedly connected with a fixed plate (302), and the fixed plate (302) is provided with a motor (303 ), the motor (303) is located below the bracket I (304), the output end of the motor (303) is provided with a pulley II (325), and the bracket I (304) is provided with two supports (305), and the two supports are respectively Located on both sides of the support I (304), the two supports (305) are provided with a mandrel I (308), one end of the mandrel I (308) passes through a support (305), and the mandrel I (308) passes through one end Belt pulley I (323) is arranged on the top, and cable puller (309) is arranged on the mandrel I (308), and cable pulley (309) is positioned between two supports (305), and pulley II (325) and The pulleys 1 (323) are connected by a belt (324), and a connecting rod (311) is fixedly connected between the cable puller (309) and the linear bearing (313). the 4. A kind of horizontal winding machine according to claim 2, is characterized in that: described coiler (10) comprises wire reel moving device, and wire reel moving device comprises box body wall 1 (301) and box body wall II (306), the box wall I (301) and the box wall II (306) are respectively provided with a shaft support (307) on the same horizontal line, and a mandrel II (312) is arranged between the two shaft supports (307), The spindle II (312) is provided with two linear bearings (313), the two linear bearings (313) are provided with a flat plate (310), and the flat plate (310) is provided with a bracket II (314) and a bearing seat III (317). ), a clutch (315) is arranged on the bracket II (314), a rotating shaft (327) is arranged on the bearing seat III (317), a coupling (316) is connected between the clutch (315) and the rotating shaft (327), and the rotating shaft (327) is provided with thimble (318) and wire reel lock (321), is provided with take-up reel (319) between thimble (318) and wire reel lock (321), and box body wall II (306) bottom is provided with Support I (304), one end of support I (304) is fixed on the casing wall II (306), and the other end of support I (304) is fixedly connected with a fixed plate (302), and the fixed plate (302) is provided with a motor (303 ), the motor (303) is located below the bracket I (304), the output end of the motor (303) is provided with a pulley II (325), and the bracket I (304) is provided with two supports (305), and the two supports are respectively Located on both sides of the support I (304), the two supports (305) are provided with a mandrel I (308), one end of the mandrel I (308) passes through a support (305), and the mandrel I (308) passes through one end Belt pulley I (323) is arranged on the top, and cable puller (309) is arranged on the mandrel I (308), and cable pulley (309) is positioned between two supports (305), and pulley II (325) and The pulleys 1 (323) are connected by a belt (324), and a connecting rod (311) is fixedly connected between the cable puller (309) and the linear bearing (313).

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