Feeding device for producing winding linear materials for large-diameter rubber pipes

Abstract

The utility model discloses a feeding device for producing a winding linear material for a large-diameter rubber pipe, and relates to the technical field of linear material pressurization. The utility model aims to solve the feeding and pressurizing problems of all linear materials such as full-specification pressurizing control from steel wire binding to steel wire armoring, pressurizing control of soft ropes, recovery and coiling and the like in the forming process of the large-diameter rubber tube. A first pressurizing device used for pressurizing a soft rope and a thin steel wire is installed on a working table top of a trolley, a second pressurizing device used for pressurizing a thick steel wire is installed at the top end of the first pressurizing device, and one side of the trolley is movably connected with a following trolley used for containing linear materials through a positioning plug pin. A grooved wheel set is installed on the first pressurizing device and is formed by connecting a plurality of V-shaped grooved wheels and a first brake in series through a transmission part. The device can accurately control the tension of the soft rope and the steel wire, the unique design of the V-shaped grooved wheel ensures that the tension meets the use requirement, the operation process of different specifications is clear, and the wire can be neatly arranged during rope winding.

Description

Technical Field

[0001] The utility model relates to the technical field of pressurizing linear materials, in particular to a feeding device for winding linear materials used in producing large-diameter rubber hoses. Background Art

[0002] In the process of hose forming, the soft rope is a crucial step, which has two important functions. On the one hand, it can pressurize and exhaust the wound film, curtain cloth and floating material, so that the materials can fit together more closely; on the other hand, after the hose is formed, the soft rope will be wrapped in the outermost layer of the hose (first wrapped with water cloth and then wrapped with soft rope), which plays a role in shaping and acting as an external model. Due to different manufacturing processes, the diameter of the soft rope is usually between 12 and 20 mm, and when the soft rope is pressurized, a certain controllable tension is required to ensure the quality and performance of the hose.

[0003] In addition, the steel wire also has two different functions in different types of hoses. For hoses with flanges, the steel wire needs to firmly bind the curtain and flange together; while for negative pressure hoses, the steel wire needs to be armored on the pipe body to enhance the strength and stability of the pipe body. The diameter of the binding steel wire is generally between 2 and 6 mm, and the diameter of the armored steel wire is usually around 8 to 20 mm. In actual work, in order to ensure that the steel wire can play an effective role, it is necessary to control the tension of the upper steel wire to make it adjustable to meet the production needs of different hoses.

[0004] For example, the patent with patent number 202022548461.6 discloses a technical solution for a steel wire device on a hose forming machine. This solution has shown many advantages to a certain extent. Through a specific structural design, the steel wire can be effectively positioned to ensure that the steel wire will not deviate from the established trajectory during the hose forming process, thereby ensuring production stability and product quality. At the same time, the device can also control the tension of the steel wire, so that the steel wire always maintains a suitable tension state during use, further improving the forming effect of the hose. However, the device is not suitable for all processes of winding linear materials in the hose forming process. In some processes, due to different working requirements and operating methods, the device has certain limitations. Utility Model Content

[0005] In order to solve the above-mentioned problem, that is, to solve the problem raised by the above-mentioned background technology, the utility model proposes a feeding device for producing winding linear materials for large-diameter rubber hoses, which includes a first pressurizing device with a pressurized soft rope and a thin steel wire installed on the working table of a trolley, and a second pressurizing device with a pressurized thick steel wire installed on the top of the first pressurizing device. One side of the trolley is movably connected to a following car containing linear materials through a positioning pin; a groove wheel group is installed on the first pressurizing device, and the groove wheel group is composed of a plurality of V-shaped groove wheels connected in series with a first brake through a transmission component.

[0006] The utility model is further configured as follows: a U-shaped wire support is provided on the outer side of the feed end of the first pressure device, a clamping roller is installed on the inner side close to the feed end, a detection roller is installed on the inner side close to the discharge end, and a first guide roller is provided on the top end of the discharge end.

[0007] The utility model is further configured as follows: a tension sensor is provided on one side of the detection roller.

[0008] The utility model is further configured as follows: a second supporting roller and a first positioning roller are provided at the feed end of the second pressurizing device, a loading arm is movably connected to the discharge end of the second pressurizing device via a pin shaft, a supporting roller group, a pressurizing roller and a floating pressurizing roller are installed in the cavity of the second pressurizing device, and an opening for auxiliary loading and unloading of the steel wire is opened on the side of the second pressurizing device.

[0009] The utility model is further configured as follows: the top ends of the pressure roller and the floating pressure roller are respectively connected with lifts, and a second hand wheel is installed on one side of the two lifts.

[0010] The utility model is further configured as follows: the loading arm includes a rotating arm and a telescopic arm, the rotating arm is sequentially mounted with a second pressure roller, a third guide roller, a second guide roller and a first hand wheel, the first hand wheel is connected to the telescopic arm through a transmission component, a first supporting roller is mounted at the end of the telescopic arm, and the telescopic arm is sequentially mounted with a first pressure roller and a second positioning roller.

[0011] The utility model is further configured as follows: the first brake is installed at one end side of the groove wheel group.

[0012] The utility model is further configured as follows: a universal wheel is installed at the bottom of the following vehicle.

[0013] The utility model is further configured as follows: the following vehicle comprises a steel wire following vehicle and a rope retracting and releasing vehicle, a tray is installed on the top of the vehicle body of the steel wire following vehicle through a slewing support, and a top cover is arranged on the top of the tray to prevent the steel wire from slipping out; a reduction motor, a wire arranger, an air-controlled valve group and a bracket are installed on the body of the rope retracting and releasing vehicle, the bracket is connected to a rope pulley through a safety chuck, a second brake is installed on one side of the safety chuck, a third sprocket is installed on the other side of the safety chuck, and a one-way bearing is installed in the third sprocket.

[0014] The utility model is further configured as follows: positioning pins are provided on one side of the body and the pallet of the steel wire following vehicle, the first sprocket on the second brake is connected to the second sprocket at the output end of the reduction motor by a chain, the third sprocket is connected to the fourth sprocket at the end of the rotating shaft of the wire arranging device by a chain, a traction roller is installed on the top of the wire arranging device, and the air-controlled valve group includes an electromagnetic reversing valve and a pressure regulating valve.

[0015] The beneficial technical effects of the utility model are as follows: the device can accurately control the tension of the soft rope and steel wire, the unique V-groove wheel design ensures that the tension meets the use requirements, the operation procedures of different specifications are clear, the wires can be neatly arranged when the ropes are collected, and the material storage of the processes such as rope laying, rope untying, thin steel wire laying and thick steel wire laying in the hose forming process is designed to follow the vehicle, which is flexible to use and reduces the space occupied by the trolley. The working tension of the soft rope and steel wire is large and the precision is high, the rope tension can reach more than 2000N, and the thin steel wire tension can reach more than 1000N. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the pressurizing device is shown.

[0017] Figure 2 A schematic diagram of the steel wire following vehicle structure is shown.

[0018] Figure 3 A schematic diagram of the structure of a rope-following vehicle is shown.

[0019] Figure 4 A schematic diagram of the upper rope of the utility model is shown.

[0020] Figure 5 A schematic diagram of untying a rope according to the utility model is shown.

[0021] Figure 6 A schematic diagram of the thin steel wire of the utility model is shown.

[0022] Figure 7 The schematic diagram of the thick steel wire of the utility model is shown.

[0023] Figure 8 A side view of a V-groove wheel is shown.

[0024] 1. The trolley is provided with a plurality of movable parts, and the movable parts are provided with a plurality of movable parts. The movable parts are provided with a plurality of movable parts. The movable parts are provided with a plurality of movable parts. DETAILED DESCRIPTION

[0025] Please refer to the attached Figure 1-8 Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] The utility model proposes a feeding device for producing winding wire materials for large-diameter rubber hoses, including a first pressurizing device 2 for pressurizing soft ropes and thin steel wires installed on the working table of a trolley 1, the diameter of the thin steel wire is ≤3mm, and a second pressurizing device 3 for pressurizing thick steel wires is installed on the top of the first pressurizing device 2, the diameter of the thick steel wire is >3mm. A follower vehicle for containing wire materials is movably connected to one side of the trolley 1 through a positioning pin, and the follower vehicle includes a steel wire follower vehicle 4 and a rope-retracting follower vehicle 5. The follower vehicle is used to store the required wire materials, and a suitable follower vehicle can be selected according to different processes. The rope-retracting follower vehicle 5 is carried when the soft rope is put on and released, and the steel wire follower vehicle 4 is carried when the steel wire is put on.

[0027] The feed end and the discharge end of the first pressurizing device 2 are designed as an open structure to facilitate the loading and unloading of linear materials; a U-shaped wire support 23 is arranged on the outside of the feed end, and a first guide roller 12 is arranged on the top of the discharge end. Both the U-shaped wire support 23 and the first guide roller 12 play a guiding role. A clamping roller 9 is installed on the inner side of the first pressurizing device 2 near the feed end, and a detection roller 11 is installed on the inner side near the discharge end. A sheave group is installed on the first pressurizing device 2. The sheave group consists of several V-shaped sheaves 10 connected in series with the first brake 13 through a transmission component. The transmission component can be a chain or a gear. The first brake 13 provides braking torque to the sheave group, and the sprocket and chain play a role in controlling the speed difference of the V-shaped sheave 10. The first brake 13 is installed on one side of the end of the sheave group, which can make the sheave group more stable during operation, and also facilitate the control and adjustment of the tension of the entire system.

[0028] The linear velocity of each V-groove wheel 10 of the sheave group in contact with the soft rope is different, so that the linear velocity of the soft rope increases when passing through each V-groove wheel 10, and the rate of increase of the linear velocity is related to the stretching rate of the soft rope. When the system is running, power is transmitted to each V-groove wheel 10 through the soft rope, so that the sheave group starts to rotate. Since the chain connects each V-groove wheel 10 with the first brake 13, when the tension needs to be adjusted, the braking torque of the first brake 13 is applied to each V-groove wheel 10 through the chain. This series connection method can achieve precise control of the sheave group and ensure the stable operation of the system under different tension conditions. For example, when the tension of the soft rope needs to be increased, it can be achieved by increasing the output torque of the first brake 13.

[0029] A tension sensor is provided on one side of the detection roller 11, and the tension value is displayed on the operating panel. The real-time tension is detected by the tension sensor and fed back to the controller, which controls the torque output of the first brake 13 and finally controls the tension of the soft rope.

[0030] The feeding end of the second pressure device 3 is provided with a second roller 32 and a first positioning roller 14. The first positioning roller 14 is composed of two vertical rollers, which are symmetrically opened and controlled by the forward and reverse screw rods. The cavity of the second pressure device 3 is equipped with a roller group 15, a pressure roller 16 and a floating pressure roller 17. The tops of the pressure roller 16 and the floating pressure roller 17 are respectively connected to the elevators 25. The second hand wheel 24 is installed on one side of the two elevators 25. The second hand wheel 24 outputs a rotational motion, and drives the pressure roller 16 and the floating pressure roller 17 to work through the elevator 25 to adjust the tension of the armored steel wire.

[0031] The discharge end of the second pressurizing device 3 is movably connected to a feeding arm through a pin shaft. A supporting component is screwed to the outer side of the first guide roller 12, which is used to support and adjust the angle of the rotating arm 18. By rotating the turntable at the bottom of the supporting component, the length of the top screw rod can change the angle of the rotating arm 18. A positioning pin is set on one side of the pin shaft. When the feeding arm is not needed, the positioning pin is used to lock the feeding arm. The length of the feeding arm is adjusted by the first hand wheel 20 driving the gear and rack. An opening for auxiliary loading and unloading of steel wire is opened on the side of the second pressurizing device 3 to facilitate the installation and removal of the steel wire.

[0032] The feeding arm includes a rotating arm 18 and a telescopic arm 19. The second pressure roller 36, the third guide roller 35, the second guide roller 34, and the first hand wheel 20 are installed on the rotating arm 18 in sequence. The second pressure roller 36, the third guide roller 35 and the second guide roller 34 all play a guiding and reinforcing role. The second pressure roller 36 is installed at the feed end close to the feeding wall, and the third guide roller 35 is installed on one side of the rotating arm 18. The first hand wheel 20 is connected to the telescopic arm 19 through a transmission component. The first hand wheel 20 is used to adjust the extension length of the telescopic arm 19. The transmission component can be a gear, a chain or a screw rod, etc. A positioning handle is provided on one side of the first hand wheel 20, and the positioning handle can lock and release the first hand wheel 20. A first support roller 22 is installed at the end of the telescopic arm 19, and a first pressure roller 33 and a second positioning roller 21 are installed on the telescopic arm 19 in sequence. The second positioning roller 21 is composed of two vertical rollers. An adjustment handle is provided on one side of the second positioning roller 21. The distance between the two vertical rollers can be adjusted by rotating the adjustment handle left and right, and the steel wire is fitted between the two vertical rollers.

[0033] A positioning pin is provided on one side of the body of the steel wire following vehicle 4, and the pin can be connected with the pin hole on the trolley 1. A tray 7 is installed on the top of the body of the steel wire following vehicle 4 through a slewing support 6, and a fence is installed on the tray 7. A top cover 8 is provided on the top of the tray 7 to prevent the steel wire from slipping out, and a positioning pin is provided on one side of the tray 7 to prevent the tray 7 from rotating. The positioning pin is inserted into the positioning hole of the vehicle body only when the trolley is manually pushed.

[0034] The body of the rope-collecting and releasing following vehicle 5 is equipped with a reduction motor 27, a cable arranging device 28, a gas-controlled valve group 29 and a bracket. The bracket is connected to a rope wheel 26 through a safety chuck 30. The rope wheel 26 is used to store the soft rope. The reduction motor 27 provides power for the rope collection. A second brake 31 is installed on one side of the safety chuck 30. The first sprocket on the second brake 31 is connected to the second sprocket at the output end of the reduction motor 27 through a chain to balance the rope-releasing speed of the main shaft. A third sprocket is installed on the other side of the safety chuck 30. A one-way bearing is installed in the third sprocket. The third sprocket is connected to the fourth sprocket at the end of the rotating shaft of the cable arranging device 28 through a chain. A traction roller is installed at the top of the cable arranging device 28 to guide the cable arranging.

[0035] The air control valve group 29 includes an electromagnetic reversing valve and a pressure regulating valve, which are used to control the tension of the soft rope between the first pressurizing device 2 and the rope wheel 26, and is also used to switch the different pressures supplied to the second brake 31. The high pressure is used for rope collection and parking, the low pressure is used for automatic rope release, and the zero pressure is used for manual rope release. The bus bundle port connecting the air control valve group 29 and the reduction motor 27 is installed on the outer wall of the first pressurizing device 2. The bus bundle provides control and power for the electromagnetic reversing valve, the pressure regulating valve, the reduction motor 27 and the second brake 31, and is connected to the molding machine control system through an aviation plug and a pneumatic quick-connect connector. Braking can be performed when releasing the rope, and there is power when collecting the rope. The power source is connected to the molding machine system through the bus.

[0036] The first pressurizing device 2 can accurately control the winding tension of the soft rope and thin steel wire. The unique V-groove wheel set design ensures that when the tension at the input end of the soft rope drops to zero, the tension value at the output end remains stable. The second pressurizing device 3 adjusts the tension of the thick steel wire through the second hand wheel 24. The whole set of equipment has clear operation procedures in different processes, the feeding tension is controllable, and the rope collection and wiring are neat. During the hose forming process, the storage of linear materials such as rope loading, rope untying, bundling steel wire and armored steel wire is designed in the form of a follower vehicle, which does not occupy equipment space, reduces the load of the trolley 1, and is connected when needed and disassembled when not needed. Universal wheels are installed at the bottom of the follower vehicle for easy movement.

[0037] When the soft rope passes through the V-groove wheel 10, the groove wheel group adopts a speed reduction design, that is, according to the opposite direction of the soft rope running, the linear speed of the equal width parts in the groove of the adjacent V-groove wheel 10 is reduced. When the soft rope wraps the V-groove wheel 10 and is pulled by the main shaft, the friction formed between the two sides of the soft rope and the V-groove wheel 10 will drive the V-groove wheel 10 to rotate. Due to the speed reduction, the soft rope will be stretched when passing through each V-groove wheel 10. While being stretched and thinned, the soft rope moves closer to the root of the V-groove wheel 10. The closer the V-shaped structure is to the root, the narrower the width. In this process, the closer the soft rope is to the root of the V-groove wheel 10, the greater the clamping force of the V-shaped surface on the soft rope, and the greater the friction between the soft rope and the V-groove wheel 10. However, the speed reduction ratio of the V-groove wheel 10 is not the greater the better. It has a certain relationship with the tensile deformation of the soft rope. If the ratio is too large, the soft rope and the V-groove wheel 10 will slip, which reduces the friction. The unique V-shaped structural design ensures that even when the soft rope leaves the rope wheel 26 and the tail is in a relaxed state, the tension between the main shaft and the pressure device decreases very slowly. When the torque of the first brake 13 is adjusted, the tension of the soft rope will change. Practice has proved that there is a certain proportional relationship between the output torque of the first brake 13 and the tension of the soft rope. By increasing the output torque of the first brake 13, the tension of the soft rope can reach 2000N.

[0038] like Figure 4 As shown, when the rope is being put on, the handle of the wire arranging device 28 is released and moved to one side, and the soft rope is led out from the rope wheel 26 on the rope following vehicle 5, and passes through the U-shaped wire support 23, the clamping roller 9, the V-shaped groove wheel 10, the detection roller 11 and the first guide roller 12 in sequence, and finally is wound onto the main shaft.

[0039] like Figure 5 As shown, when untying the rope, the output torque of the second brake 31 is removed, the handle of the cable arranging device 28 is lifted, and the soft rope is led out from the main shaft, passing through the first guide roller 12, part of the V-groove wheel 10, the clamping roller 9, the U-shaped wire support 23 and the traction roller of the cable arranging device 28 in sequence, and finally wound into the rope wheel 26.

[0040] like Figure 6 As shown, when the thin steel wire is being loaded, the loading arms of the first pressurizing device 2 and the second pressurizing device 3 are used, and the thin steel wire is led out from the tray 7 on the steel wire following vehicle 4, and passes through the U-shaped wire support 23, the clamping roller 9, a part of the V-shaped groove wheel 10, the detection roller 11, the first guide roller 12, the third guide roller 35, the second guide roller 34, the first pressure roller 33, the second positioning roller 21 and the first support roller 22 in sequence, and is finally wound onto the main shaft.

[0041] like Figure 7 As shown, when the upper thick steel wire is working, the second pressure device 3 is used, and the thick steel wire is led out from the tray 7 on the steel wire following car 4, and passes through the second roller 32, the first positioning roller 14, the pressure roller 16, the roller group 15, the floating pressure roller 17, the second pressure roller 36, the third guide roller 35, the second guide roller 34, the first pressure roller 33, the second positioning roller 21 and the first roller 22 in sequence, and is finally wound onto the main shaft.

[0042] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0043] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0046] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A feeding device for producing winding wire materials for large-diameter hoses, characterized in that: A first pressurizing device (2) for pressurizing soft ropes and thin steel wires is installed on the working surface of the trolley (1); a second pressurizing device (3) for pressurizing thick steel wires is installed on the top of the first pressurizing device (2); and a follower vehicle for containing linear materials is movably connected to one side of the trolley (1) via a positioning pin; The first pressurizing device (2) is provided with a sheave assembly, wherein the sheave assembly is composed of a plurality of V-shaped sheaves (10) connected in series with a first brake (13) via a transmission component.

2. A feeding device for producing winding wire materials for large-diameter hoses according to claim 1, characterized in that: A U-shaped wire support (23) is arranged on the outer side of the feed end of the first pressurizing device (2), a clamping roller (9) is installed on the inner side close to the feed end, a detection roller (11) is installed on the inner side close to the discharge end, and a first guide roller (12) is arranged on the top end of the discharge end.

3. A feeding device for producing winding wire materials for large-diameter hoses according to claim 2, characterized in that: A tension sensor is provided on one side of the detection roller (11).

4. A feeding device for winding wire materials for producing large-diameter hoses according to claim 1, characterized in that: The feeding end of the second pressurizing device (3) is provided with a second supporting roller (32) and a first positioning roller (14); the discharging end of the second pressurizing device (3) is movably connected to a loading arm via a pin shaft; a supporting roller group (15), a pressurizing roller (16) and a floating pressurizing roller (17) are installed in the cavity of the second pressurizing device (3); and an opening for assisting in loading and unloading a steel wire is provided on the side of the second pressurizing device (3).

5. A feeding device for producing winding wire materials for large-diameter hoses according to claim 4, characterized in that: The top ends of the pressure roller (16) and the floating pressure roller (17) are respectively connected to lifts (25), and a second hand wheel (24) is installed on one side of the two lifts (25).

6. A feeding device for producing winding wire materials for large-diameter hoses according to claim 4, characterized in that: The loading arm comprises a rotating arm (18) and a telescopic arm (19); a second pressure roller (36), a third guide roller (35), a second guide roller (34) and a first hand wheel (20) are sequentially mounted on the rotating arm (18); the first hand wheel (20) is connected to the telescopic arm (19) through a transmission component; a first supporting roller (22) is mounted at the end of the telescopic arm (19); and a first pressure roller (33) and a second positioning roller (21) are sequentially mounted on the telescopic arm (19).

7. The feeding device for winding wire materials for producing large-diameter hoses according to claim 1, characterized in that: The first brake (13) is installed on one end side of the sheave assembly.

8. The feeding device for winding wire materials for producing large-diameter hoses according to claim 1 is characterized in that: Universal wheels are installed at the bottom of the following vehicle.

9. The feeding device for winding wire materials for producing large-diameter hoses according to claim 1, characterized in that: The following vehicle comprises a steel wire following vehicle (4) and a retractable rope following vehicle (5); a tray (7) is installed on the top of the vehicle body of the steel wire following vehicle (4) via a slewing support (6); a top cover (8) is arranged on the top of the tray (7) to prevent the steel wire from slipping out; a reduction motor (27), a wire arranging device (28), an air control valve group (29) and a bracket are installed on the vehicle body of the retractable rope following vehicle (5); the bracket is connected to a rope wheel (26) via a safety chuck (30); a second brake (31) is installed on one side of the safety chuck (30); a third sprocket is installed on the other side of the safety chuck (30); a one-way bearing is installed in the third sprocket.

10. A feeding device for winding wire materials for producing large-diameter hoses according to claim 9, characterized in that: The body of the steel wire following vehicle (4) and one side of the tray (7) are both provided with positioning pins, the first sprocket on the second brake (31) is connected to the second sprocket at the output end of the reduction motor (27) through a chain, the third sprocket is connected to the fourth sprocket at the end of the rotating shaft of the wire arranging device (28) through a chain, a traction roller is installed at the top end of the wire arranging device (28), and the air control valve group (29) includes an electromagnetic reversing valve and a pressure regulating valve.

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