CN220702710U

CN220702710U - Fabric winding device of textile machinery

Info

Publication number: CN220702710U
Application number: CN202321513293.4U
Authority: CN
Inventors: 张向阳
Original assignee: Fujian Dade Runcheng Industrial Co ltd
Current assignee: Fujian Dade Runcheng Industrial Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2024-04-02
Anticipated expiration: 2033-06-14

Abstract

The utility model relates to the technical field of fabric winding, in particular to a fabric winding device of textile machinery. The winding drum is arranged on the winding mounting frame at the right end of the underframe, the winding drum is rotatably arranged on the front end bearing and the rear end bearing of the side frames at the front side and the rear side of the winding mounting frame through the connecting shaft, the extension drum is fixedly arranged at the rear side of the inner ring of the rear end bearing, and when the fabric is wound, the connecting shaft is pulled out, so that the winding drum can be quickly taken down and replaced; through setting up the structure of making level at rolling mounting bracket top, wherein, the structure of making level includes the guide pulley case, and this guide pulley case bottom has set up from left to right to the guide pulley of middle part slope in proper order, and when the guide pulley was pasted with textile fabric, the rolling motor operation drove a rolling section of thick bamboo and will carry out the rolling to textile fabric when in reverse, and the guide pulley can be with the surface fabric stall in two directions around rotating the in-process, effectively avoids textile fabric to appear piling up and the circumstances of fold at the rolling in-process.

Description

Fabric winding device of textile machinery

Technical Field

The utility model relates to the technical field of fabric winding, in particular to a fabric winding device of textile machinery.

Background

Textile machinery when textile fabric, finished fabric is discharged from a discharge hole, the fabric is required to be rolled by using equipment, the rolling of the fabric is usually realized by using a rolling barrel, the rolling barrel is usually driven to rotate by a motor, the existing fabric rolling machine is commonly used in a structure that: one end of the winding shaft is rotatably arranged on the frame, the other end of the winding shaft is suspended, the winding shaft is sleeved on the winding shaft, the winding shaft is driven by a motor to perform winding action, and the winding shaft is taken down from the winding shaft after winding is completed, so that certain requirements are placed on the weight of fabric winding in the use process of the equipment, and the weight of the winding shaft and the weight of fabric directly acts on the connection part of the winding shaft and the frame, so that the winding shaft is excessively heavy, bending deformation of the winding shaft can be caused, and the fabric winding is seriously caused to have angle deviation;

and current textile fabric rolling equipment, in order to keep textile fabric's rolling quality in the rolling process, utilize the structure of sweeping to sweep the surface fabric of rolling generally, the structure of sweeping that commonly uses is usually carried out with elastic material, utilizes elastic material's elasticity extrusion surface fabric, plays the effect of sweeping, but, along with the thickness increase of surface fabric rolling, elastic material strengthens the effort that the surface fabric applyed, causes the surface fabric to be pressed excessively easily and causes the damage.

Therefore, a fabric winding device of a textile machine is provided for solving the problems.

Disclosure of Invention

The utility model aims to provide a fabric winding device of textile machinery, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the fabric winding device of the textile machinery comprises a chassis and a winding mechanism arranged at the right half area of the chassis, wherein the winding mechanism comprises a winding installation frame, a winding cylinder arranged on the winding installation frame and a connecting shaft for installing the winding cylinder on the winding installation frame;

the rolling mounting bracket top is provided with the structure of making level, the structure of making level is including setting up the crane that extends the frame and slide and set up on extending the frame front and back both sides slide bar, the crane below is provided with the guide pulley case, and both ends all are provided with the slip member that upwards runs through the crane perpendicularly around the guide pulley case to the spring is established to the cover between guide pulley case and crane on the slip member, and the symmetry is provided with two sets of guide pulley mounting grooves that incline to the middle part in proper order from left to right on the bottom panel of guide pulley case, and the guide pulley mounting groove rotation is provided with the guide pulley.

As a preferable scheme, front end bearings and rear end bearings are respectively arranged on the side frames on the front side and the rear side of the winding installation frame, an extension cylinder is fixedly arranged on the rear side of the inner ring of the rear end bearing, a driving belt pulley is fixedly arranged on the extension cylinder, a through groove is formed in the winding cylinder, clamping strips are arranged on the inner walls of the through groove, the front end bearings and the rear end bearings, clamping grooves of the clamping strips are opposite to the surfaces of the connecting shafts, and the connecting shafts sequentially penetrate through the inner rings of the winding cylinder and the rear end bearings after being inserted from the inner rings of the front end bearings.

As a preferable scheme, the front end and the rear end of the winding drum are both provided with baffles.

As a preferable scheme, the motor mounting frame is fixedly arranged at the bottom of the rear end of the winding mounting frame, the winding motor is fixedly arranged on the motor mounting frame, and a driving belt connected with the driving belt pulley is arranged on a motor shaft of the winding motor.

As a preferable scheme, the right end of the chassis is fixedly provided with a control box, a relay is arranged on a bottom plate inside the control box, a PLC (programmable logic controller) is arranged on the inner wall of the right side of the control box, a control signal access end of the relay is connected with a control signal output end of the PLC through an electric signal, and an electric energy access end of the winding motor is connected with an electric energy output end of the relay through a wire.

As a preferable scheme, a touch sensor is arranged on a top panel at the left end of the chassis, and a detection signal output end of the touch sensor is connected with a detection signal access end of the PLC through an electric signal.

As a preferred scheme, symmetrically provided with squeeze roll mounting bracket on the left side board of side bearer bottom around the rolling mounting bracket, and laminating is provided with two squeeze rolls between two sets of squeeze roll mounting brackets, and squeeze roll both ends are all installed between two sets of squeeze roll mounting brackets through the pivot rotation.

As a preferable scheme, both ends of the lifting frame are provided with sliding sleeves which are arranged on the sliding rods in a sliding way, an electric push rod is fixedly arranged in the middle of the extending frame, and the bottom of a piston rod of the electric push rod is fixedly connected with the lifting frame.

As a preferable scheme, the top panel of the lifting frame is fixedly provided with a mounting seat, the top of the mounting seat is fixedly provided with a touch sensor B, and the detection signal output end of the touch sensor B is connected with the detection signal access end of the PLC through an electric signal.

According to the technical scheme provided by the utility model, the fabric winding device of the textile machinery has the beneficial effects that:

1. the winding device is characterized in that a winding drum is arranged on a winding mounting frame at the right end of the underframe, the winding drum is rotatably mounted on a front end bearing and a rear end bearing of side frames at the front side and the rear side of the winding mounting frame through a connecting shaft, an extension drum is fixedly arranged at the rear side of an inner ring of the rear end bearing, a driving belt pulley is fixedly arranged on the extension drum, a through groove is formed in the winding drum, clamping strips are arranged on the inner walls of the through groove, the front end bearing and the rear end bearing, the surface of the connecting shaft is opposite to the clamping grooves of the clamping strips, the connecting shaft sequentially penetrates through the winding drum and the inner ring of the rear end bearing after being inserted from the inner ring of the front end bearing, the inner ring of the rear end bearing is driven by a winding motor to rotate, the winding drum can be synchronously driven to rotate, the winding of fabric is realized, and after the winding of the fabric is completed, the connecting shaft is drawn out, the winding drum can be quickly taken down and replaced, the winding device is high in structural stability, the winding drum cannot shake and the like in the high winding process, and the winding drum is convenient to detach;

2. through setting up the structure of making level at rolling mounting bracket top, wherein, the structure of making level includes the guide pulley case, this guide pulley case bottom has set up from left to right to the guide pulley of middle part slope in proper order, when guide pulley and textile fabric subsides, the rolling motor operation drives a rolling section of thick bamboo and will roll to textile fabric when in reverse, the guide pulley can be with the surface fabric shakeout two directions around rotating the in-process, effectively avoid textile fabric to appear piling up and the circumstances of fold at the rolling in-process, simultaneously, because the guide pulley case follows the crane and goes up and down, be convenient for adjust the pressure between guide pulley and the surface fabric, can effectively avoid the surface fabric to be pressed excessively and lead to the condition of damage.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a fabric winding device of a textile machine;

FIG. 2 is a schematic diagram of the internal structure of the control box according to the present utility model;

FIG. 3 is a schematic diagram of the installation structure of the rear end bearing and the winding motor in the utility model;

FIG. 4 is a schematic view of a leveling mechanism according to the present utility model;

FIG. 5 is a schematic view of a bottom panel of a guide box according to the present utility model.

In the figure: 1. a chassis; 11. winding the mounting frame; 12. extrusion roller mounting frame; 13. a squeeze roll; 14. a motor mounting rack; 2. a front end bearing; 21. a rear end bearing; 22. an extension cylinder; 23. a drive pulley; 24. a clamping strip; 3. winding up a winding drum; 31. a baffle; 32. a connecting shaft; 33. a clamping groove; 34. a winding motor; 35. a drive belt; 4. a touch sensor; 5. a control box; 51. a relay; 52. a PLC controller; 6. an extension frame; 61. a slide bar; 62. a sliding sleeve; 63. an electric push rod; 64. a lifting frame; 65. a guide wheel box; 651. a guide wheel mounting groove; 652. a guide wheel; 66. a sliding rod piece; 67. a spring; 68. a mounting base; 69. touching sensor B.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 1-5, an embodiment of the present utility model provides a fabric winding device of a textile machine, including a chassis 1 and a winding mechanism disposed at a right half area of the chassis 1, where the winding mechanism includes a winding mounting frame 11, a winding drum 3 disposed on the winding mounting frame 11, and a connecting shaft 32 for mounting the winding drum 3 on the winding mounting frame 11;

the rolling mounting bracket 11 top is provided with the structure of making level, the structure of making level is including setting up the crane 64 on the slide bar 61 of the both sides around the crane 6 of extension frame 6 and sliding setting, crane 64 below is provided with guide pulley case 65, and both ends all are provided with the slip member 66 that upwards runs through crane 64 perpendicularly around guide pulley case 65, and the cover establishes spring 67 between guide pulley case 65 and crane 64 on the slip member 66, the symmetry is provided with two sets of guide pulley mounting grooves 651 that follow left and right side and incline to the middle part in proper order on the bottom panel of guide pulley case 65, and the guide pulley mounting groove 651 internal rotation is provided with guide pulley 652.

In the device, front end bearing 2 and rear end bearing 21 are respectively arranged on the side frames on the front side and the rear side of rolling installation frame 11, extension cylinder 22 is fixedly arranged on the rear side of the inner ring of rear end bearing 21, driving belt pulley 23 is fixedly arranged on extension cylinder 22, through grooves are formed in rolling cylinder 3, clamping strips 24 are respectively arranged on the inner walls of through grooves, front end bearing 2 and rear end bearing 21, the surfaces of connecting shafts 32 are opposite to clamping grooves 33 of clamping strips 24, connecting shafts 32 sequentially penetrate through the inner rings of rolling cylinder 3 and rear end bearing 21 after being inserted from the inner ring of front end bearing 2, and baffle plates 31 are respectively arranged at the front end and the rear end of rolling cylinder 3.

In the device, a motor mounting frame 14 is fixedly arranged at the bottom of the rear end of a winding mounting frame 11, a winding motor 34 is fixedly arranged on the motor mounting frame 14, and a driving belt 35 connected with a driving belt pulley 23 is arranged on a motor shaft of the winding motor 34.

In the device, the right end of the chassis 1 is fixedly provided with the control box 5, a bottom plate in the control box 5 is provided with the relay 51, the right inner wall of the control box 5 is provided with the PLC controller 52, the control signal access end of the relay 51 is connected with the control signal output end of the PLC controller 52 through an electric signal, and the electric energy access end of the winding motor 34 is connected with the electric energy output end of the relay 51 through a wire.

In the above device, a touch sensor 4 is disposed on a top panel at the left end of the chassis 1, and a detection signal output end of the touch sensor 4 is connected to a detection signal access end of the PLC controller 52 through an electrical signal.

Among the above-mentioned device, the symmetry is provided with squeeze roll mounting bracket 12 on the left side board of side bearer bottom around the rolling mounting bracket 11, and the laminating is provided with two squeeze rolls 13 between two sets of squeeze roll mounting brackets 12, and squeeze roll 13 both ends are all installed between two sets of squeeze roll mounting brackets 12 through the pivot rotation.

In the device, sliding sleeves 62 which are arranged on the sliding rods 61 in a sliding manner are arranged at two ends of the lifting frame 64, an electric push rod 63 is fixedly arranged in the middle of the extending frame 6, and the bottom of a piston rod of the electric push rod 63 is fixedly connected with the lifting frame 64.

In the above device, the top panel of the lifting frame 64 is fixedly provided with the mounting seat 68, and the top of the mounting seat 68 is fixedly provided with the touch sensor B69, and the detection signal output end of the touch sensor B69 is connected with the detection signal access end of the PLC controller 52 through an electrical signal.

Embodiments of the present utility model will be described in further detail below with reference to the attached drawings:

referring to fig. 1-5, the device comprises a chassis 1 and a winding mechanism arranged at the right half area of the chassis 1, wherein the winding mechanism comprises a winding mounting frame 11, a winding drum 3 arranged on the winding mounting frame 11 and a connecting shaft 32 for mounting the winding drum 3 on the winding mounting frame 11;

the front end and the rear end of the winding drum 3 are respectively provided with a baffle 31, the right end of the chassis 1 is provided with a winding installation frame 11, front end bearings 2 and rear end bearings 21 are respectively arranged on the side frames of the front side and the rear side of the winding installation frame 11, the rear side of the inner ring of the rear end bearing 21 is fixedly provided with an extension drum 22, the extension drum 22 is fixedly provided with a driving belt pulley 23, the inside of the winding drum 3 is provided with a through groove, the inner walls of the through groove, the front end bearing 2 and the rear end bearing 21 are respectively provided with a clamping strip 24, the surfaces of the connecting shafts 32 are opposite to clamping grooves 33 of the clamping strips 24, the connecting shafts 32 sequentially penetrate through the inner rings of the winding drum 3 and the rear end bearing 21 after being inserted from the inner ring of the front end bearing 2, the rear end bottom of the winding installation frame 11 is fixedly provided with a motor installation frame 14, the motor installation frame 14 is fixedly provided with a winding motor 34, and a motor shaft of the winding motor 34 is provided with a driving belt 35 connected with the driving belt pulley 23;

wherein, through set up receipts reel 3 on the rolling mounting bracket 11 of chassis 1 right-hand member, this receipts reel 3 passes through connecting axle 32 rotation to be installed on the front end bearing 2 and the rear end bearing 21 of the both sides side bearer around the receipts reel mounting bracket 11, the inner circle rear side of rear end bearing 21 is fixed to be provided with extension section of thick bamboo 22, and fixedly be provided with drive pulley 23 on the extension section of thick bamboo 22, and the inside feed trough that is provided with of receipts section of thick bamboo 3, all be provided with screens strip 24 on the inner wall of feed trough, front end bearing and rear end bearing, connecting axle 32 surface is just to the draw-in groove 33 of screens strip, connecting axle 32 runs through receipts reel 3 and the inner circle of rear end bearing 21 in proper order after inserting from the inner circle of front end bearing 2, the inner circle of rear end bearing 21 rotates under the drive of rolling motor 34, can drive receipts reel 3 is rotatory in step, after the face material rolling is accomplished, take out connecting axle 32, can take off receipts reel 3 and change fast, this coiling device, high structural stability, the condition such as rocking can not appear in the high rolling section of thick bamboo in the rolling process, and it is convenient to dismantle.

Referring to fig. 1, 4 and 5, a leveling structure is arranged at the top of the winding installation frame 11, the leveling structure comprises an extension frame 6 arranged at the top of the winding installation frame 11 and a lifting frame 64 arranged on sliding rods 61 on the front side and the rear side of the extension frame 6 in a sliding manner, a guide wheel box 65 is arranged below the lifting frame 64, sliding rods 66 vertically penetrating through the lifting frame 64 upwards are arranged at the front end and the rear end of the guide wheel box 65, springs 67 are sleeved on the sliding rods 66 between the guide wheel box 65 and the lifting frame 64, two groups of guide wheel installation grooves 651 which are inclined from left to right to the middle in sequence are symmetrically arranged on a bottom panel of the guide wheel box 65, and guide wheels 652 are rotationally arranged in the guide wheel installation grooves 651;

further, sliding sleeves 62 which are arranged on the sliding rods 61 in a sliding manner are arranged at two ends of the lifting frame 64, an electric push rod 63 is fixedly arranged in the middle of the extension frame 6, the bottom of a piston rod of the electric push rod 63 is fixedly connected with the lifting frame 64, and the lifting frame 64 can be driven to move up and down on the sliding rods 61 by stretching of the electric push rod 63 so as to adjust the extrusion force of the guide wheels 652 on the textile fabric;

further, an installation seat 68 is fixedly arranged on the top panel of the lifting frame 64, a touch sensor B69 is fixedly arranged at the top of the installation seat 68, a detection signal output end of the touch sensor B69 is connected with a detection signal access end of the PLC 52 through an electric signal, when the touch sensor B69 touches the lifting frame 64, the extrusion force of the guide wheel 652 on the textile fabric reaches a peak value, the electric push rod 63 is shortened, and the lifting frame 64 is driven to rise;

through setting up the structure of making level at rolling mounting bracket top, wherein, the structure of making level includes the guide pulley case, and this guide pulley case bottom has set up from left to right to the guide pulley of middle part slope in proper order, and when the guide pulley was pasted with textile fabric, the rolling motor operation drove a rolling section of thick bamboo and will carry out the rolling to textile fabric when in reverse, and the guide pulley can be with the surface fabric stall in two directions around rotating the in-process, effectively avoids textile fabric to appear piling up and the circumstances of fold at the rolling in-process.

Referring to fig. 1 and 2, a control box 5 is fixedly arranged at the right end of the chassis 1, a relay 51 is arranged on a bottom plate inside the control box 5, a PLC controller 52 is arranged on the inner wall of the right side of the control box 5, a control signal access end of the relay 51 is connected with a control signal output end of the PLC controller 52 through an electric signal, and an electric energy access end of the winding motor 34 is connected with an electric energy output end of the relay 51 through a wire;

further, be provided with touch sensor 4 on the top panel of chassis 1 left end, touch sensor 4's detection signal output part passes through the detection signal access end of electrical signal connection PLC controller 52, when the fabric touch sensor 4, triggers the operation of rolling motor 34 a period of time, realizes the automatic rolling to the fabric.

Referring to fig. 1, squeeze roll mounting frames 12 are symmetrically arranged on left side panels of front and rear side frame bottoms of a winding mounting frame 11, two squeeze rolls 13 are arranged between the two squeeze roll mounting frames 12 in a laminating mode, two ends of each squeeze roll 13 are rotatably arranged between the two squeeze roll mounting frames 12 through rotating shafts, the two squeeze rolls 13 can squeeze fabric, the fabric is slightly pulled when the winding drum 3 winds the fabric, stretching and leveling of the fabric are achieved, and the fabric winding engineering is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fabric coiling mechanism of textile machine, includes chassis (1) and sets up the winding mechanism in chassis (1) right half district, its characterized in that: the winding mechanism comprises a winding installation frame (11), a winding drum (3) arranged on the winding installation frame (11) and a connecting shaft (32) for installing the winding drum (3) on the winding installation frame (11);

the utility model discloses a winding mounting bracket, including rolling mounting bracket (11), the winding mounting bracket is provided with the structure of making level, the structure of making level is including setting up extension frame (6) and the slip that sets up on extension frame (6) front and back both sides slide bar (61) lift frame (64), lift frame (64) below is provided with guide pulley case (65), and both ends all are provided with the slip member (66) that upwards runs through lift frame (64) perpendicularly around guide pulley case (65) to cover between guide pulley case (65) and lift frame (64) on slip member (66) establishes spring (67), the symmetry is provided with two sets of guide pulley mounting grooves (651) that follow left and right sides slope in proper order on the bottom panel of guide pulley case (65), and guide pulley mounting groove (651) rotation is provided with guide pulley (652).

2. The fabric winding device of a textile machine according to claim 1, wherein: front end bearing (2) and rear end bearing (21) are respectively arranged on the side frames of the front side and the rear side of the winding installation frame (11), an extension cylinder (22) is fixedly arranged on the rear side of the inner ring of the rear end bearing (21), a driving belt pulley (23) is fixedly arranged on the extension cylinder (22), a through groove is formed in the winding cylinder (3), clamping strips (24) are arranged on the inner walls of the through groove, the front end bearing (2) and the rear end bearing (21), clamping grooves (33) of the clamping strips (24) are opposite to the surface of a connecting shaft (32), and the connecting shaft (32) sequentially penetrates through the inner rings of the winding cylinder (3) and the rear end bearing (21) after being inserted from the inner ring of the front end bearing (2).

3. The fabric winding device of a textile machine according to claim 1, wherein: baffle plates (31) are arranged at the front end and the rear end of the winding drum (3).

4. The fabric winding device of a textile machine according to claim 1, wherein: the motor mounting frame (14) is fixedly arranged at the bottom of the rear end of the winding mounting frame (11), the winding motor (34) is fixedly arranged on the motor mounting frame (14), and a driving belt (35) connected with the driving belt pulley (23) is arranged on a motor shaft of the winding motor (34).

5. The fabric winding device of a textile machine according to claim 4, wherein: the novel winding device is characterized in that a control box (5) is fixedly arranged at the right end of the underframe (1), a relay (51) is arranged on a bottom plate inside the control box (5), a PLC (programmable logic controller) (52) is arranged on the right inner wall of the control box (5), a control signal access end of the relay (51) is connected with a control signal output end of the PLC (52) through an electric signal, and an electric energy access end of the winding motor (34) is connected with an electric energy output end of the relay (51) through a wire.

6. The fabric winding device of a textile machine according to claim 1, wherein: the top panel of chassis (1) left end is provided with touch sensor (4), the detection signal output of touch sensor (4) is through the detection signal access end of electric signal connection PLC controller (52).

7. The fabric winding device of a textile machine according to claim 1, wherein: the winding mounting frame (11) is characterized in that squeeze roll mounting frames (12) are symmetrically arranged on the left side panel at the bottom of the front and rear side frames, two squeeze rolls (13) are arranged between the two groups of squeeze roll mounting frames (12) in a laminating mode, and two ends of each squeeze roll (13) are rotatably arranged between the two groups of squeeze roll mounting frames (12) through rotating shafts.

8. The fabric winding device of a textile machine according to claim 1, wherein: both ends of the lifting frame (64) are provided with sliding sleeves (62) which are arranged on the sliding rods (61) in a sliding manner, an electric push rod (63) is fixedly arranged in the middle of the extending frame (6), and the bottom of a piston rod of the electric push rod (63) is fixedly connected with the lifting frame (64).

9. The fabric winding device of a textile machine according to claim 1, wherein: the top panel of the lifting frame (64) is fixedly provided with a mounting seat (68), the top of the mounting seat (68) is fixedly provided with a touch sensor B (69), and the detection signal output end of the touch sensor B (69) is connected with the detection signal access end of the PLC (52) through an electric signal.