Full-automatic mesh wire weaving equipment

Abstract

The invention discloses full-automatic net wire weaving equipment which comprises a rack, a wire spool is rotationally connected to the rack, and net wires are wound on the wire spool; a working platform is arranged in front of the machine frame, a straightening mechanism, a wire feeding mechanism, a cutting mechanism, a pressing mechanism, an unloading mechanism, a bending mechanism and a twisting mechanism are sequentially arranged on the working platform from back to front, the straightening mechanism is used for leading in and straightening net wires of a wire spool, and the wire feeding mechanism is used for conveying the straightened net wires forwards to form net wire sections with a certain length. The cutting mechanism is used for cutting the rear end of the net wire section, the bending mechanism is used for bending the front end of the net wire section backwards, the pressing mechanism is used for pressing the front end and the rear end of the net wire section, the twisting mechanism is used for fixing the middle of the net wire section and rotating the net wire section by a certain number of turns, and the unloading mechanism is used for unloading woven net wires. The equipment can be used for continuously weaving, so that the time required for weaving the netting wires is greatly shortened, the overall working efficiency is improved, and the efficient operation of underground operation is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of networking wire weaving, and in particular relates to a fully automatic networking wire weaving device. Background Art

[0002] At present, a large amount of mesh wire is needed for networking in the construction work and tunnel maintenance of coal mine excavation teams. In the actual production process underground in coal mines, mesh wire networking operations face many difficulties. On the one hand, the team cannot draw special personnel from the well to carry out mesh wire weaving work, which results in the task of mesh wire weaving having to be performed by underground workers. The underground operation itself is arduous and labor-intensive. After completing normal excavation or tunnel maintenance work in each shift, the workers need to use their off-duty time to go to the big class room to weave mesh wires, which greatly extends their working hours. On the other hand, manual weaving of mesh wires is a time-consuming and labor-intensive task. The traditional manual weaving method requires the workers to manually weave, bend, twist and other operations of the mesh wires one by one, which is not only inefficient, but also with the increasing number of networking wires used underground, the time and labor costs of manual weaving are also increasing, which seriously affects the overall work progress and the enthusiasm of employees. Summary of the invention

[0003] The purpose of the present invention is to provide a fully automatic mesh weaving device, which can replace the traditional manual weaving method, realize the fully automatic and rapid weaving of mesh wires, and greatly improve the efficiency and quality of mesh weaving.

[0004] The technical solution adopted by the present invention is: a fully automatic weaving network wire equipment, including a frame, a winding disk is rotatably connected to the frame, and the winding disk is wound with mesh wire; a working platform is arranged in front of the frame, and a straightening mechanism, a wire feeding mechanism, a cutting mechanism, a pressing mechanism, an unloading mechanism, a bending mechanism and a twisting mechanism are arranged on the working platform from back to front in sequence, the straightening mechanism is used to introduce and straighten the mesh wire of the winding disk, the wire feeding mechanism is used to convey the straightened mesh wire forward to a mesh wire segment of a certain length, the cutting mechanism is used to cut off the rear end of the mesh wire segment, the bending mechanism is used to bend the front end of the mesh wire segment backward, the pressing mechanism is used to press the front and rear ends of the mesh wire segment, the twisting mechanism is used to fix the middle part of the mesh wire segment and rotate it a certain number of times, and the unloading mechanism is used to unload the woven mesh wire.

[0005] Furthermore, a guide plate is provided at the front end of the frame, and a guide hole is provided on the guide plate for the mesh to pass through. The straightening mechanism includes a bracket, and a front mounting seat and a rear mounting seat are respectively provided on the bracket, and guide tubes are provided in front of the front mounting seat and behind the rear mounting seat. Two rows of rollers are installed on the inner side surface of the front mounting seat and the upper side surface of the rear mounting seat. The two rows of rollers are alternately arranged and provided with grooves, so that the mesh can be flattened in two directions perpendicular to each other.

[0006] Furthermore, the cutting mechanism includes a first fixed seat, a vertical plate is provided on the upper rear side of the first fixed seat, a connecting pipe is provided behind the vertical plate, a knife seat is provided in front of the vertical plate, a knife head is provided in the knife seat, a cutting cylinder is provided in the first fixed seat, and the telescopic rod of the cutting cylinder is connected to the knife head to cut the mesh.

[0007] Furthermore, the clamping mechanism includes a support seat, a rubber pad is fixed on the top of the support seat, a second fixed seat is arranged on the left side of the support seat, the middle part of the second fixed seat is rotatably connected to the pressure block, a clamping cylinder is arranged in the second fixed seat, the telescopic rod of the clamping cylinder is hingedly connected to the left end of the pressure block, and the mesh is pressed against the rubber pad by rotating the pressure block.

[0008] Furthermore, the unloading mechanism includes a third fixed seat, in which an unloading cylinder is arranged, the upper end of the telescopic rod of the unloading cylinder is hingedly connected to the middle part of the unloading frame, the left side of the third fixed seat is rotatably connected to the lower end of the connecting rod, the upper end of the connecting rod is rotatably connected to the left end side of the unloading frame, and an unloading panel is arranged on the unloading frame, the left side of the unloading panel is connected to a baffle extending upward, and the right side of the unloading panel is connected to an inclined plate inclined obliquely downward.

[0009] Furthermore, the bending mechanism includes a rotating cylinder, an output shaft of the rotating cylinder is connected to the vertical shaft, the upper end of the vertical shaft is connected to one end of a horizontally arranged connecting plate, and a push rod extending downward is arranged at the other end of the connecting plate.

[0010] Furthermore, the torsion mechanism includes a fixed frame, the rear of which is rotatably connected to a bracket, the top of the bracket is a plane, the plane is provided with a groove on the rotation trajectory of the push rod, a baffle rod is vertically provided on the rear side of the plane, the push rod pushes the mesh to bend at the baffle rod, and a torsion motor that is transmission-connected to the bracket is provided in front of the fixed frame.

[0011] Furthermore, it includes a control system, which controls the actions of various mechanisms to automatically complete the weaving of networked wires, including a PLC control unit, the PLC control unit is electrically connected to the solenoid valve through an intermediate relay, the solenoid valve is connected to the cutting cylinder, the clamping cylinder, the unloading cylinder and the rotating cylinder, the wire feeding mechanism is driven by a servo motor, the servo motor is electrically connected to the PLC control unit through a servo driver, the torsion motor is a stepper motor, the stepper motor is electrically connected to the PLC control unit through a stepper driver, and the PLC control unit is connected to a touch screen display for displaying the operating status and adjusting the operating parameters.

[0012] Furthermore, the touch display screen is used to set the wire feeding length, speed, and number of twisting turns. The wire feeding mechanism automatically stops after feeding the mesh wire to the set length. The bending mechanism bends the mesh wire and the clamping mechanism clamps the mesh wire. Then the cutting mechanism and the twisting mechanism operate at the same time. After the twisting is completed, the clamping mechanism is released, the unloading mechanism operates to complete the unloading, and then the wire feeding mechanism operates to start the next round of production.

[0013] Furthermore, a photosensor for detecting the mesh is arranged at the guide tube behind the rear mounting seat, and a pressure sensor for detecting the air pressure is arranged on the air pipe providing the power air source. The photosensor and the pressure sensor are electrically connected to the PLC control unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. It adopts an integrated mechanical structure, including straightening mechanism, wire feeding mechanism, cutting mechanism, pressing mechanism, bending mechanism and twisting mechanism. Each mechanism works together to realize the fully automatic mesh weaving process and improve work efficiency.

[0015] 2. The unloading mechanism is designed to realize automatic unloading of the mesh after weaving, further improving the automation of the equipment and reducing manual intervention.

[0016] 3. Compressed air is used as the power source, and it is matched with cylinders, solenoid valves and other components to provide stable power for the mechanical mechanism, which can ensure the smooth operation of the equipment.

[0017] 4. The unique control system design is combined with PLC control unit, touch screen, servo motor, stepper motor and other equipment to achieve precise control and convenient operation, and can flexibly set parameters such as wire feeding, bending, and twisting. At the same time, the touch screen operation interface is convenient and fast, and the operator can flexibly adjust the braiding parameters according to actual needs, which further improves work efficiency and ensures that underground networking operations can be completed in a timely and efficient manner.

[0018] 5. It is equipped with a complete sensor system, such as photosensitive sensors, pressure sensors, etc., which can monitor the equipment operation status in real time, and can promptly feedback and display equipment status and fault information (such as emergency stop fault, air pressure fault, wire missing fault, etc.), which is convenient for equipment maintenance and troubleshooting.

[0019] 6. This equipment can quickly and accurately complete a series of operations such as wire feeding, bending, twisting, and cutting of the mesh according to preset parameters, and can perform weaving work continuously, which greatly shortens the time required for mesh weaving and solves the problems of high labor intensity and low efficiency in manual mesh weaving. It can effectively shorten the working hours of employees, improve overall work efficiency, and ensure efficient underground operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the straightening mechanism of the present invention; Figure 3 It is a structural schematic diagram of the wire feeding mechanism of the present invention; Figure 4 It is a structural schematic diagram of the cutting mechanism of the present invention; Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention; Figure 6 is a side view of the clamping mechanism of the present invention; Figure 7 is a side view of the unloading mechanism of the present invention; Figure 8 It is a structural schematic diagram of the bending mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the torsion mechanism of the present invention; Fig.10 It is the control principle diagram of the present invention.

[0021] In the figure: 1, winding drum; 11, guide plate; 2, straightening mechanism; 21, bracket; 22, front mounting seat; 23, rear mounting seat; 24, guide tube; 25, roller; 3, wire feeding mechanism; 31, mounting frame; 32, rubber wheel; 4, cutting mechanism; 41, first fixing seat; 42, vertical plate; 43, connecting pipe; 44, knife seat; 45, cutting cylinder; 5, clamping mechanism; 51, supporting seat; 52, rubber pad; 53, second fixing seat; 54, pressing block ; 55. Clamping cylinder; 6. Unloading mechanism; 61. Third fixed seat; 62. Unloading cylinder; 63. Unloading frame; 64. Connecting rod; 65. Unloading panel; 66. Baffle plate; 67. Inclined plate; 7. Bending mechanism; 71. Rotating cylinder; 72. Vertical axis; 73. Connecting plate; 74. Push rod; 8. Twisting mechanism; 81. Fixed frame; 82. Bracket; 83. Groove; 84. Baffle rod; 85. Twisting motor; 9. Air compressor; 10. Control box. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a fully automatic weaving networking wire device of the present invention in conjunction with the accompanying drawings.

[0023] like Figure 1 As shown, a fully automatic weaving network wire equipment comprises a frame, on which a winding drum 1 is rotatably connected, and mesh wire is wound on the winding drum 1; a working platform is arranged in front of the frame, and a straightening mechanism 2, a wire feeding mechanism 3, a cutting mechanism 4, a pressing mechanism 5, an unloading mechanism 6, a bending mechanism 7 and a twisting mechanism 8 are arranged on the working platform in sequence from back to front, the straightening mechanism 2 introduces and straightens the mesh wire of the winding drum 1, the wire feeding mechanism 3 conveys the straightened mesh wire forward to a mesh wire segment of a certain length, the cutting mechanism 4 cuts off the rear end of the mesh wire segment, the bending mechanism 7 bends the front end of the mesh wire segment backward, the pressing mechanism 5 presses the front and rear ends of the mesh wire segment, the twisting mechanism 8 fixes the middle part of the mesh wire segment and rotates a certain number of times, then the pressing mechanism 5 releases the pressing of the mesh wire segment, and the unloading mechanism 6 unloads the woven mesh wire.

[0024] like Figure 1 and Figure 2 As shown, an air compressor 9 is arranged under the frame, and the mechanical part uses compressed air as power. Two winding drums 1 are arranged above the frame, one in front and one in the back. A guide plate 11 is arranged at the front end of the frame, and a guide hole is arranged on the guide plate 11. The mesh wires on the two winding drums 1 pass through the guide hole to the front at the same time. The straightening mechanism 2 includes a bracket 21. A front mounting seat 22 and a rear mounting seat 23 are arranged on the bracket 21, one in front and one in the back, respectively. A guide tube 24 is arranged in front of the front mounting seat 22 and in the back of the rear mounting seat 23. Two rows of rollers 25 are installed on the inner side surface of the front mounting seat 22 and the upper side surface of the rear mounting seat 23. The two rows of rollers 25 are arranged alternately and have grooves, which can flatten the mesh wire in two directions perpendicular to each other.

[0025] like Figure 3 As shown, the wire feeding mechanism 3 includes a mounting frame 31, and guide holes are arranged on the front and rear sides of the mounting frame 31. Two groups of rubber wheels 32 for pressing the mesh wire are arranged side by side on the inner side surface of the mounting frame 31, wherein the upper rubber wheel 32 is a driving wheel, and the driving wheel transmission is connected to the reducer and driving motor arranged on the outer side surface of the mounting frame.

[0026] like Figure 4 As shown, the cutting mechanism 4 includes a first fixed seat 41, a vertical plate 42 is provided on the upper rear side of the first fixed seat 41, a connecting pipe 43 is provided at the rear of the vertical plate 42 to connect with the guide hole of the mounting frame 31, a knife seat 44 is provided in front of the vertical plate 42, a knife head is provided in the knife seat 44, a cutting cylinder 45 is provided in the first fixed seat 41, and the telescopic rod of the cutting cylinder 45 is connected to the knife head to cut the mesh.

[0027] like Figure 5 and Figure 6 As shown, the clamping mechanism 5 includes a support seat 51, a rubber pad 52 is fixed on the top of the support seat 51, a second fixed seat 53 is arranged on the left side of the support seat 51, the second fixed seat 53 is rotatably connected to the middle part of the pressing block 54, a clamping cylinder 55 is arranged in the second fixed seat 53, and the telescopic rod of the clamping cylinder 55 is hingedly connected to the left end of the pressing block 54, and the mesh is pressed onto the rubber pad 52 by rotating the pressing block 54.

[0028] like Figure 7 As shown, the unloading mechanism 6 includes a third fixed seat 61, in which an unloading cylinder 62 is arranged, and the upper end of the telescopic rod of the unloading cylinder 62 is hingedly connected to the middle part of the unloading frame 63, and the left side of the third fixed seat 61 is rotatably connected to the lower end of the connecting rod 64, and the upper end of the connecting rod 64 is rotatably connected to the left end side of the unloading frame 63. The hinged connecting rod 64 enables the unloading frame 63 to flip at a large angle within the shorter stroke range of the unloading cylinder 62, and an unloading panel 65 is arranged on the unloading frame 63, and the left side of the unloading panel 65 is connected to a baffle 66 extending upward, and the right side of the unloading panel 65 is connected to an inclined plate 67 inclined obliquely downward.

[0029] like Figure 8 As shown, the bending mechanism 7 includes a rotating cylinder 71, the output shaft of the rotating cylinder 71 is connected to a vertical shaft 72, the upper end of the vertical shaft 72 is connected to one end of a horizontally arranged connecting plate 73, and the other end of the connecting plate 73 is provided with a push rod 74 extending downward.

[0030] like Fig. 9 As shown, the torsion mechanism 8 includes a fixed frame 81, and a bracket 82 is rotatably connected to the rear of the fixed frame 81. The upper surface of the bracket 82 is a plane, and a groove 83 is provided on the rotation trajectory of the push rod. A blocking rod 84 is vertically provided on the rear side of the plane. The push rod 74 pushes the mesh to bend at the blocking rod 84. A torsion motor 85 that transmits and connects the bracket 82 is fixedly connected to the front of the fixed frame 81.

[0031] like Figure 1 and Fig.10 As shown, a control box 10 is arranged on the left side of the rack, and a control system is arranged in the control box 10. Fig.10 As shown, the control system includes a PLC control unit, which adopts Siemens s7-200smartPLC, and the PLC control unit is electrically connected to the solenoid valve through an intermediate relay, and the solenoid valve is connected to the cut-off cylinder 45, the pressing cylinder 55, the unloading cylinder 62 and the rotating cylinder 71. The driving motor adopts a Panasonic servo motor, which is electrically connected to the PLC control unit through a servo driver, and the torsion motor 85 adopts a Renault stepper motor, which is electrically connected to the PLC control unit through a stepper driver. A photosensitive sensor for detecting the mesh is set at the guide tube 24 behind the rear mounting seat 23, and a pressure sensor for detecting the air pressure is set on the air pipe of the air compressor 9, and the photosensitive sensor and the pressure sensor are electrically connected to the PLC control unit.

[0032] The PLC control unit is connected to the touch screen display. The touch screen display adopts Kunlun Tongtai touch screen to display the operating status and adjust the operating parameters. The touch screen displays the equipment status, parameter settings, equipment debugging and operating instructions. In the equipment status, the current equipment operating status and the number of networked wire weaving, emergency stop fault, air pressure fault and wire shortage fault can be displayed. In the parameter setting, the wire feeding length, wire feeding speed and number of twisting circles can be set. In the equipment debugging and maintenance state, each mechanism can be controlled individually. The operating instructions mainly describe the equipment operation method.

[0033] The control system uses 220V AC power, which is connected to a 24V regulated power supply. The 24V regulated power supply powers the PLC control unit and the stepper motor. The 220V AC power is connected to a filter to power the servo motor.

[0034] The designed program is imported into the control system to realize the tool to weave the mesh wire fully automatically. When in use, the whole mesh wire is installed on the frame, and the mesh wire is passed through the straightening mechanism 2, the wire feeding mechanism 3, the cutting mechanism 4, the pressing mechanism 5, the unloading mechanism 6 and the bending mechanism 7 in sequence. After connecting the power, press the start button on the control panel of the control box 10 for 3 seconds to start the equipment. The wire feeding length, speed, number of twisting circles and other parameters can be set on the touch display screen. The wire feeding mechanism 3 automatically stops after feeding the mesh wire to the set length, the bending mechanism 7 bends the mesh wire and the pressing mechanism 5 presses the mesh wire, and then the cutting mechanism 4 and the twisting mechanism 8 act at the same time. After the twisting is completed, the pressing mechanism 5 is released, and the unloading mechanism 6 acts to complete the unloading, and then the wire feeding mechanism 3 acts to start the next round of production.

[0035] Traditional manual weaving of mesh wires requires operators to repeatedly bend over for a long time, perform delicate hand operations and other high-intensity movements, which can easily lead to physical fatigue and injury to operators. After using this equipment, operators only need to perform simple equipment operations and parameter settings, and most of the heavy physical labor is completed automatically by the equipment. The fully automatic weaving process is much faster than manual weaving, which greatly reduces the labor intensity of operators, improves the working environment, and reduces occupational health problems caused by excessive labor intensity.

[0036] This equipment can completely replace manual mesh weaving work, freeing operators from heavy manual weaving labor, allowing them to devote more energy to core underground operations such as tunneling and support, effectively improving labor utilization efficiency and solving the problem of labor shortage underground.

[0037] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A fully automatic weaving networking wire equipment, characterized in that: The machine comprises a frame, on which a winding reel is rotatably connected, and on which mesh wire is wound; a working platform is arranged in front of the frame, on which a straightening mechanism, a wire feeding mechanism, a cutting mechanism, a pressing mechanism, an unloading mechanism, a bending mechanism and a twisting mechanism are arranged in sequence from back to front, the straightening mechanism is used to introduce and straighten the mesh wire of the winding reel, the wire feeding mechanism is used to convey the straightened mesh wire forward by a mesh wire segment of a certain length, the cutting mechanism is used to cut off the rear end of the mesh wire segment, the bending mechanism is used to bend the front end of the mesh wire segment backward, the pressing mechanism is used to press the front and rear ends of the mesh wire segment, the twisting mechanism is used to fix the middle part of the mesh wire segment and rotate it a certain number of times, and the unloading mechanism is used to unload the woven mesh wire.

2. The fully automatic weaving network wire equipment according to claim 1 is characterized in that: A guide plate is provided at the front end of the frame, and a guide hole is provided on the guide plate for the mesh to pass through. The straightening mechanism includes a bracket, and a front mounting seat and a rear mounting seat are respectively provided on the bracket, and guide tubes are provided in front of the front mounting seat and behind the rear mounting seat. Two rows of rollers are installed on the inner side surface of the front mounting seat and the upper side surface of the rear mounting seat. The two rows of rollers are alternately arranged and provided with grooves, so that the mesh can be flattened in two directions perpendicular to each other.

3. The fully automatic weaving network wire equipment according to claim 1 is characterized in that: The cutting mechanism includes a first fixed seat, a vertical plate is provided on the upper rear side of the first fixed seat, a connecting pipe is provided behind the vertical plate, a knife seat is provided in front of the vertical plate, a knife head is provided in the knife seat, a cutting cylinder is provided in the first fixed seat, and the telescopic rod of the cutting cylinder is connected to the knife head to cut the mesh.

4. The fully automatic weaving network wire equipment according to claim 3 is characterized in that: The clamping mechanism includes a support seat, a rubber pad is fixed on the top of the support seat, a second fixed seat is arranged on the left side of the support seat, the middle part of the second fixed seat is rotatably connected to the pressing block, a clamping cylinder is arranged in the second fixed seat, the telescopic rod of the clamping cylinder is hingedly connected to the left end of the pressing block, and the mesh is pressed against the rubber pad by rotating the pressing block.

5. The fully automatic weaving network wire equipment according to claim 4 is characterized in that: The unloading mechanism includes a third fixed seat, in which an unloading cylinder is arranged, the upper end of the telescopic rod of the unloading cylinder is hingedly connected to the middle part of the unloading frame, the left side of the third fixed seat is rotatably connected to the lower end of the connecting rod, the upper end of the connecting rod is rotatably connected to the left end side of the unloading frame, an unloading panel is arranged on the unloading frame, the left side of the unloading panel is connected to a baffle extending upward, and the right side of the unloading panel is connected to an inclined plate inclined obliquely downward.

6. The fully automatic weaving network wire equipment according to claim 5, characterized in that: The bending mechanism comprises a rotary cylinder, the output shaft of the rotary cylinder is connected to the vertical shaft, the upper end of the vertical shaft is connected to one end of a horizontally arranged connecting plate, and the other end of the connecting plate is provided with a push rod extending downward.

7. The fully automatic weaving network wire equipment according to claim 6, characterized in that: The torsion mechanism includes a fixed frame, the rear of which is rotatably connected to a bracket, the top of the bracket is a plane, the plane is provided with a groove on the rotation track of the push rod, a baffle rod is vertically provided on the rear side of the plane, the push rod pushes the mesh to bend at the baffle rod, and a torsion motor that is transmission-connected to the bracket is provided in front of the fixed frame.

8. The fully automatic weaving network wire equipment according to claim 7, characterized in that: It includes a control system, which controls the actions of various mechanisms to automatically complete the weaving of networked wires, including a PLC control unit, the PLC control unit is electrically connected to the solenoid valve through an intermediate relay, the solenoid valve is connected to a cutting cylinder, a clamping cylinder, an unloading cylinder and a rotating cylinder, the wire feeding mechanism is driven by a servo motor, the servo motor is electrically connected to the PLC control unit through a servo driver, the torsion motor is a stepper motor, the stepper motor is electrically connected to the PLC control unit through a stepper driver, and the PLC control unit is connected to a touch screen display for displaying the operating status and adjusting the operating parameters.

9. The fully automatic weaving networking wire equipment according to claim 8, characterized in that: The wire feeding length, speed, and number of twisting turns are set on the touch screen. The wire feeding mechanism automatically stops after feeding the mesh wire to the set length. The bending mechanism bends the mesh wire and the clamping mechanism clamps the mesh wire. Then the cutting mechanism and the twisting mechanism act at the same time. After the twisting is completed, the clamping mechanism is released, the unloading mechanism acts to complete the unloading, and then the wire feeding mechanism acts to start the next round of production.

10. The fully automatic weaving network wire equipment according to claim 8 or 9, characterized in that: A photosensitive sensor for detecting the mesh is arranged at the guide pipe behind the rear mounting seat, and a pressure sensor for detecting air pressure is arranged on the air pipe providing the power air source. The photosensitive sensor and the pressure sensor are electrically connected to the PLC control unit.

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