Multi-material-belt plate traction device

Abstract

The utility model relates to a plate conveying technology, in particular to a multi-material-belt plate traction device which comprises a box body structure, and a transverse material guide assembly, a longitudinal material guide assembly and a connector recognition mechanism are sequentially arranged at the top of the box body structure. The two sides of the connector recognition mechanism are each provided with a layered material supporting structure, and one layered material supporting structure is arranged between the connector recognition mechanism and the longitudinal material guiding assembly. The transverse material guiding assembly is used for being matched with the layered material supporting structure, and the multiple sets of plate strips are horizontally arranged into multiple rows at equal intervals. The longitudinal material guiding assembly is used for arranging the plate strips horizontally arranged into multiple rows into one row in the vertical direction and pulling the multiple sets of plate strips to move. The joint identification mechanism is used for identifying the thickness of the thickest group of plate strips in the plurality of groups of plate strips; the top of the box body structure is further provided with a control structure, and the control structure communicates with the longitudinal material guiding assembly and the connector recognition mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of plate conveying technology, specifically a kind of multi-material band plate traction device. BACKGROUND

[0002] Steel strip is also known as steel band. Steel band can be used for many different purposes, and the following are some common uses:

[0003] 1. Packaging and binding: Steel band can be used to bind goods, keeping them fixed and safe.

[0004] 2. Construction and structure: Steel band can be used to reinforce and strengthen buildings and structures, such as in concrete structures.

[0005] 3. Transportation and logistics: Steel band can be used to make shelves and pallets for goods, making transportation and storage easier.

[0006] 4. Chemical and manufacturing industries: Steel band can be used to manufacture chemical and mechanical parts in manufacturing industries, with high strength and corrosion resistance.

[0007] 5. Power and energy industries: Steel band can be used to manufacture protective layers for power transmission lines and electrical cables.

[0008] 6. Agriculture and rural areas: Steel band can be used to make agricultural tools and equipment, such as parts of agricultural machinery.

[0009] During the production process of steel band, in order to prevent corrosion, it is usually necessary to carry out rust prevention treatment, such as electroplating treatment. In the electroplating process, the steel band needs to be pulled through the electroplating tank. In this process, if the width of the steel band changes, it needs to be reminded in time to replace the material disc.

[0010] Currently, in the industry, the replacement of the material disc is usually controlled by workers through visual observation. When the steel band is completely transported, the machine needs to be stopped in time to replace the material disc, but sometimes the workers may not pay attention and the machine may not stop in time. INVENTION CONTENTS

[0011] The utility model aims to provide a kind of multi-material band plate traction device to solve the problems raised in the above background.

[0012] To achieve the above purpose, the utility model provides the following technical solutions:

[0013] A kind of multi-material band plate traction device, including box structure, the top of the box structure is sequentially provided with horizontal material guiding assembly, longitudinal material guiding assembly and joint identification mechanism;

[0014] A plurality of layered material supporting structures are arranged on both sides of the joint identifying mechanism, one of which is arranged between the joint identifying mechanism and the longitudinal material guiding assembly;

[0015] The horizontal material guiding assembly is used to cooperate with the layered material supporting structures to horizontally divide the plurality of plate strips into multiple rows with equal intervals; the longitudinal material guiding assembly is used to arrange the horizontally divided plate strips into a row in the vertical direction and to pull the plurality of plate strips to move; and the joint identifying mechanism is used to identify the thickness of the thickest plate strip among the plurality of plate strips.

[0016] The box structure further comprises a control structure arranged on the top of the box structure, which is in communication with the longitudinal material guiding assembly and the joint identifying mechanism.

[0017] The multi-plate-strip plate material pulling device comprises a box structure, a horizontal material guiding assembly, a longitudinal material guiding assembly, a joint identifying mechanism, and a control structure.

[0018] The box plate is arranged on the front, back, left, right, and bottom of the frame, and the horizontal material guiding assembly, the longitudinal material guiding assembly, the layered material supporting structures, and the joint identifying mechanism are arranged on the top plate.

[0019] The horizontal material guiding assembly comprises two stands fixed on the top plate, the two stands are oppositely arranged, a plurality of horizontal shafts are horizontally arranged between the two stands, the intervals of the plurality of horizontal shafts are equal, and flat rollers are rotatably arranged outside the horizontal shafts.

[0020] The longitudinal material guiding assembly comprises a portal frame arranged on the top plate, a main vertical roller is rotatably arranged on the portal frame, a motor is arranged below the top plate, and an output end of the motor is connected to one end of the main vertical roller.

[0021] A driven roller is arranged on one side of the main vertical roller, and both ends of the driven roller are rotatably connected to both ends of an inner frame.

[0022] An inner side of the portal frame is provided with a sliding rail, the inner frame is slidably connected to the sliding rail, one side of the portal frame is threadedly connected to an adjusting lead screw, one end of the adjusting lead screw is fixedly connected to a hand wheel, and the other end of the adjusting lead screw is rotatably connected to the inner frame.

[0023] The layered material supporting structure comprises a mounting frame arranged on the top plate, a plurality of grooves are vertically arranged on the mounting frame, a flat shaft is embedded in each groove, and the heights of the flat shafts embedded in the plurality of grooves correspond to the heights of the plurality of horizontal shafts.

[0024] The flat shaft is provided with a separating wheel and is fixed on the mounting frame by screws.

[0025] The joint identification mechanism comprises a bottom plate, and a fixed clamping roller and a movable clamping roller are arranged vertically and parallel on the bottom plate.

[0026] The fixed clamping roller is rotatably arranged on a fixed wheel shaft through a bearing, and one end of the fixed wheel shaft is arranged on the bottom plate; the movable clamping roller is rotatably arranged on a movable wheel shaft through another bearing, and one end of the movable wheel shaft is mounted on a movable structure.

[0027] The movable structure is connected with a reset assembly arranged on the bottom plate, and the reset assembly gives the movable structure a deflection force, so that the movable wheel shaft on the movable structure has a tendency to approach the fixed wheel shaft.

[0028] The bottom plate is further provided with a sensing structure, which cooperates with the movable structure and alarms through the movable structure to amplify the interval change amount when the interval between the movable wheel shaft and the fixed wheel shaft changes.

[0029] The control structure comprises a control panel mounted on the top plate through a support pipe, and a main machine built-in the control panel is connected with the sensing structure and the motor.

[0030] Compared with the prior art, the beneficial effects of the utility model are that: the transverse material guiding assembly cooperates with the layered material supporting structure to stably divide the multiple groups of plate strips into multiple rows with equal intervals, so that interference of the multiple groups of plate strips during movement is avoided. The longitudinal material guiding assembly is used to vertically arrange the multiple rows of plate strips into one row, so that dislocation and disorder are avoided, and subsequent material collection is facilitated. In addition, the joint identification mechanism is used to monitor the movement of the current plate strip in real time, if the current plate strip has been completely conveyed from the joint identification mechanism, the joint identification mechanism moves, sends an alarm signal to the control structure, the control structure receives the alarm signal and then transmits it to the longitudinal material guiding assembly, stops traction, and reminds the staff to replace the plate in time. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic view of the multiple plate strip plate material traction device.

[0032] Figure 2 It is a structural schematic view of the multiple plate strip plate material traction device from another aspect.

[0033] Figure 3 It is a structural schematic view of the multiple plate strip plate material traction device after the box plate is removed.

[0034] Figure 4Structure schematic view of the multiple material strip plate traction device after removing the frame, the box plate and the transverse material guiding assembly.

[0035] Figure 5 For Figure 4 Structure schematic view from another perspective.

[0036] Figure 6 Structure schematic view of the joint identification mechanism.

[0037] Figure 7 Structure schematic view of the multiple material strip plate traction device after removing the frame, the box plate and the transverse material guiding assembly. Figure 5

[0038] In the figure:

[0039] 101 - skeleton; 102 - box plate; 103 - top plate;

[0040] 201 - stand; 202 - horizontal shaft; 203 - flat roller;

[0041] 301 - portal frame; 302 - main vertical roller; 303 - driven roller; 304 - inner frame; 305 - adjusting screw; 306 - sliding rail; 307 - motor;

[0042] 401 - mounting frame; 402 - horizontal shaft; 403 - partition wheel;

[0043] 501 - base; 502 - material supporting wheel; 503 - adjusting plate; 504 - supporting rod; 505 - adjusting jaw; 506 - fixed plate; 507 - adjusting knob; 508 - fixed wheel shaft; 509 - bearing; 510 - fixed clamping roller; 511 - movable wheel shaft; 512 - movable clamping roller; 513 - rotating shaft; 514 - rotating arm; 515 - reset arm; 516 - micro switch; 517 - reset fixed block; 518 - spring plunger; 519 - screw rod; 520 - bottom plate; 521 - material supporting wheel fixed block;

[0044] 601 - supporting pipe; 602 - control panel. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0046] Please refer to Figures 1-7 As an embodiment of the present application, the multiple material strip plate traction device comprises a box body structure, and the top of the box body structure is sequentially provided with a transverse material guiding assembly, a longitudinal material guiding assembly and a joint identification mechanism.

[0047] ​A set of layered material supporting structures is arranged on both sides of the joint identification mechanism, and one set of layered material supporting structures is arranged between the joint identification mechanism and the longitudinal material guiding assembly;

[0048] The horizontal material guiding assembly is used to cooperate with the layered material supporting structures to horizontally divide the multiple sets of plate strips into multiple rows with equal intervals, the longitudinal material guiding assembly is used to arrange the multiple rows of plate strips into a row in the vertical direction and to pull the multiple sets of plate strips to move, and the joint identification mechanism is used to identify the thickness of the thickest set of plate strips in the multiple sets of plate strips.

[0049] The top of the box structure is further provided with a control structure, and the control structure is in communication with the longitudinal material guiding assembly and the joint identification mechanism.

[0050] In this embodiment, the multiple sets of plate strips are stably divided into multiple rows with equal intervals through the cooperation of the horizontal material guiding assembly and the layered material supporting structures, so that interference of the multiple sets of plate strips during movement is avoided. The multiple rows of plate strips are arranged into a row in the vertical direction through the longitudinal material guiding assembly, so that dislocation and disorder of the plate strips are avoided, and subsequent material collection is facilitated. In addition, the joint identification mechanism is used to monitor the movement of the current plate strips in real time, if the current plate strips have been completely conveyed from the joint identification mechanism, the joint identification mechanism moves, sends an alarm signal to the control structure, and the control structure receives the alarm signal and then transmits the alarm signal to the longitudinal material guiding assembly to stop traction, so as to remind the worker to replace the plate strips in time.

[0051] As a further scheme of the utility model, the box structure comprises a frame formed by a plurality of skeletons 101 fixed at the head and tail, a box plate 102, and a top plate 103 installed on the top of the frame.

[0052] The box plate 102 is installed on the front and back, left and right, and bottom of the frame, and the horizontal material guiding assembly, the longitudinal material guiding assembly, the layered material supporting structure, and the joint identification mechanism are all installed on the top plate 103.

[0053] In this embodiment, the box plate 102 is installed on the front and back, left and right, and bottom of the frame, and the top plate 103 is installed on the top of the frame to form a closed box, so as to install the related power supply and control modules in the box.

[0054] As a further scheme of the utility model, the horizontal material guiding assembly comprises two stands 201 fixed on the top plate 103, the two stands 201 are oppositely arranged, a plurality of horizontal shafts 202 are horizontally installed between the two stands 201, the multiple sets of horizontal shafts 202 have equal intervals, and flat rollers 203 are rotatably installed outside the horizontal shafts 202.

[0055] In the embodiment, the multiple groups of flat rollers 203 arranged at equal intervals by rotating can cooperate with the layered material supporting structure to divide the multiple groups of plate strips into multiple rows at equal intervals, so that the multiple groups of plate strips are prevented from interfering with each other during traction.

[0056] As a further scheme of the utility model, the longitudinal material guiding assembly comprises a gate-shaped frame 301 installed on the top plate 103, a main vertical roller 302 is vertically rotatably installed on the gate-shaped frame 301, a motor 307 is installed below the top plate 103, and an output end of the motor 307 is connected with one end of the main vertical roller 302.

[0057] A driven roller 303 is parallelly arranged on one side of the main vertical roller 302, and two ends of the driven roller 303 are rotatably connected with two ends of an inner frame 304 respectively.

[0058] An inner side of the gate-shaped frame 301 is provided with a sliding rail 306, the inner frame 304 is in sliding cooperation with the sliding rail 306, an adjusting screw rod 305 is threadedly connected with one side of the gate-shaped frame 301, a hand wheel is fixed to one end of the adjusting screw rod 305, and the other end of the adjusting screw rod 305 is rotatably connected with the inner frame 304.

[0059] In the embodiment, the adjusting screw rod 305 can be driven to rotate by rotating the hand wheel, the inner frame 304 is further driven to slide along the sliding rail 306, and finally the driven roller 303 is driven to move close to or away from the main vertical roller 302, so as to adapt to plate strips of different thicknesses. The main vertical roller 302 is driven to rotate by the motor 307, and when the plate strip passes through the gap between the main vertical roller 302 and the driven roller 303, the rotating main vertical roller 302 can drive the plate strip to move.

[0060] As a further scheme of the utility model, the layered material supporting structure comprises a mounting frame 401 arranged on the top plate 103, a plurality of grooves are vertically arranged on the mounting frame 401, a flat shaft 402 is embedded in each groove, and the heights of the flat shafts 402 embedded in the grooves correspond to the heights of the multiple horizontal shafts 202 one by one.

[0061] A separation wheel 403 is rotatably arranged on the flat shaft 402, and the flat shaft 402 is fixed on the mounting frame 401 by screws.

[0062] In the embodiment, since the mounting frame 401 is provided with a plurality of vertical grooves, the height of each flat shaft 402 can be adjusted, and the height difference between adjacent two flat shafts 402 is kept equal, so that the height difference between adjacent two separation wheels 403 is relatively ensured, so as to keep one side of the plate strip horizontally divided into multiple rows at equal intervals, and the other side of the plate strip is divided into multiple rows at corresponding equal intervals by the multiple groups of flat rollers 203.

[0063] As a further scheme of the utility model, the joint identification mechanism comprises a bottom plate 520, the bottom plate 520 is vertically provided with a fixed clamp roller 510 and a movable clamp roller 512 in parallel,

[0064] The fixed clamp roller 510 is rotatably arranged on a fixed wheel shaft 508 through a bearing 509, and one end of the fixed wheel shaft 508 is arranged on the bottom plate 520; the movable clamp roller 512 is rotatably arranged on a movable wheel shaft 511 through another bearing 509, and one end of the movable wheel shaft 511 is mounted on a movable structure;

[0065] The movable structure is connected with a reset assembly arranged on the bottom plate 520, and the reset assembly gives the movable structure a deflection force, so that the movable wheel shaft 511 on the movable structure has a tendency to approach the fixed wheel shaft 508;

[0066] The bottom plate 520 is further provided with a sensing structure, the sensing structure cooperates with the movable structure, and when the spacing between the movable wheel shaft 511 and the fixed wheel shaft 508 changes, the spacing change value is amplified by the movable structure and an alarm is given.

[0067] In this embodiment, since the spacing between the movable wheel shaft 511 and the fixed wheel shaft 508 can be adaptively changed, the fixed clamp roller 510 and the movable clamp roller 512 can adapt to different plate thickness conditions; when the spacing between the fixed clamp roller 510 and the movable clamp roller 512 changes, the spacing change value between the two is amplified by the movable structure and transmitted to the sensing structure, and finally an alarm is given through the sensing structure, so as to achieve the prompting and reminding effect.

[0068] As a further scheme of the utility model, the movable structure comprises a rotating arm 514 rotatably arranged on the bottom plate 520 through a rotating shaft 513, and a reset arm 515 arranged on the rotating arm 514;

[0069] The rotating arm 514 comprises a first flat section and a second flat section, and the first flat section and the second flat section form an "L" shape; the rotating shaft 513 is connected to the junction of the first flat section and the second flat section;

[0070] The movable wheel shaft 511 is fixed to one end of the first flat section away from the second flat section, and the reset assembly and the sensing structure are both matched with the second flat section.

[0071] In this embodiment, when the spacing between the fixed clamp roller 510 and the movable clamp roller 512 changes, the movable wheel shaft 511 drives the rotating arm 514 to rotate around the rotating shaft 513, and then the second flat section presses the reset assembly and triggers the sensing structure. The rotating arm 514 and the rotating shaft 513 of the "L" shape utilize the lever principle to amplify the spacing change value between the fixed clamp roller 510 and the movable clamp roller 512, that is, to amplify the thickness change value of the plate.

[0072] As a further scheme of the utility model, the reset assembly comprises a reset fixing block 517 mounted on the bottom plate 520, and a spring plunger 518 mounted on the reset fixing block 517 and protruding towards the second straight section;

[0073] One end of the spring plunger 518 is in contact with the reset arm 515.

[0074] In detail, the spring plunger 518 comprises a plunger sleeve arranged on the reset fixing block 517, and a plunger rod in sliding fit with the plunger sleeve, one end of the plunger rod extending into the plunger sleeve, and the end of the plunger rod extending into the plunger sleeve being in contact with the inner wall of the plunger sleeve through a spring, and the other end of the plunger rod extending out of the plunger sleeve and being in contact with the reset arm 515.

[0075] In this embodiment, the elastic and retractable feature of the spring plunger is utilized, so that when the distance between the fixed clamping roller 510 and the movable clamping roller 512 increases, the reset arm 515 is pressed by the second straight section to make the plunger rod retract into the plunger sleeve to further compress the built-in spring, and the force of the spring on the plunger rod towards the second straight section makes the movable roller shaft 511 have a tendency to approach the fixed roller shaft 508.

[0076] As a further scheme of the utility model, the sensing structure comprises a screw rod 519 mounted on the rotating arm 514, and a micro switch 516 mounted on the bottom plate 520;

[0077] The screw rod 519 penetrates the second straight section and is in threaded connection with the second straight section, and one end of the screw rod 519 is in contact with the micro switch 516.

[0078] In this embodiment, when the distance between the fixed clamping roller 510 and the movable clamping roller 512 increases, the second straight section can drive the screw rod 519 to approach the micro switch 516 to trigger the micro switch 516, and in addition, since the screw rod 516 is in threaded connection with the second straight section, the position of the end of the screw rod 516 can be adjusted according to the thickness of the plate strip before use of the device, so that the device can be adapted to different working conditions of different plate thicknesses.

[0079] As a further scheme of the utility model, a feeding channel is formed between the fixed clamping roller 510 and the movable clamping roller 512, one material supporting wheel 502 is arranged before and after the feeding channel, and the two material supporting wheels 502 have the same height;

[0080] The material supporting wheel 502 is rotatably mounted on a material supporting wheel fixing block 521 through a wheel shaft, and the material supporting wheel fixing block 521 is mounted on the bottom plate 520.

[0081] In this embodiment, the plate strip passing through the feeding channel is supported by two material supporting wheels 502 arranged in front of and behind each other, so as to avoid the direct sliding friction contact between the plate strip and the bottom plate 520, reduce the conveying resistance of the plate strip, and also protect the plate strip from being scratched.

[0082] As a further scheme of the present application, the bottom plate 520 is provided below with a base 501, the base 501 is provided with a support rod 504 parallel to the fixed wheel shaft 508 and the movable wheel shaft 511, and the top end of the support rod 504 is provided with a fixed plate 506.

[0083] One side of the bottom plate 520 is fixedly connected with an adjusting plate 503, the support rod 504 and the adjusting plate 503 are in sliding fit, and an adjusting structure connected with the adjusting plate 503 is further arranged between the base 501 and the fixed plate 506.

[0084] In this embodiment, the adjusting structure can drive the adjusting plate 503 to slide up and down along the support rod 504, so as to adjust the height of the bottom plate 520 from the base 501.

[0085] As a further scheme of the present application, the adjusting structure comprises an adjusting tooth rod 505 rotatably connected with the fixed plate 506, the adjusting tooth rod 505 is in threaded fit with the adjusting plate 503, and the top end of the adjusting tooth rod 505 is provided with an adjusting knob 507.

[0086] In this embodiment, the adjusting knob 507 is rotated to drive the adjusting tooth rod 505 to rotate, so as to drive the adjusting plate 503 to slide up or down along the support rod 504, and then drive the bottom plate 520 to move up or down through the adjusting plate 503, so as to adjust the height.

[0087] As a further scheme of the present application, the control structure comprises a control panel 602 installed on the top plate 103 through a support pipe 601, a host computer built in the control panel 602 is in communication with the micro switch 516 in the sensing structure, and the host computer is further connected with the motor 307.

[0088] In this embodiment, when the plate strip conveying is completed, the micro switch 516 is triggered to send a signal to the host computer, and the host computer receives the signal to send an alarm signal to the motor 307 to stop working; after the staff replaces the material disc, the motor 307 is controlled on the control panel 602 to continue working to pull and convey the next batch of plate strip.

[0089] The above examples are exemplary rather than limiting, and the technical solutions of the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application, and are therefore encompassed within the scope of the present application.

Claims

1. A multi-strand plate material pulling device comprising a box structure, characterized in that, The top of the box structure is sequentially provided with a horizontal material guiding assembly, a longitudinal material guiding assembly, and a joint identification mechanism; Each side of the joint identification mechanism is provided with a set of layered material supporting structures, and one set of layered material supporting structures is arranged between the joint identification mechanism and the longitudinal material guiding assembly; The horizontal material guiding assembly is used to cooperate with the layered material supporting structures to horizontally divide a plurality of groups of plate strips into multiple rows with equal spacing; the longitudinal material guiding assembly is used to arrange the plate strips horizontally divided into multiple rows into a row in the vertical direction and pull a plurality of groups of the plate strips to move; and the joint identification mechanism is used to identify the thickness of the thickest group of plate strips in the plurality of groups of plate strips. A control structure is further installed on the top of the box structure, and the control structure communicates with the longitudinal material guiding assembly and the joint identification mechanism.

2. A multi-bale plate hauling apparatus according to claim 1, wherein, The box structure comprises a frame formed by a plurality of skeletons (101) fixed end to end, a box plate (102), and a top plate (103) installed on the top of the frame; The box plate (102) is installed on the front and back, left and right, and bottom of the frame, and the horizontal material guiding assembly, the longitudinal material guiding assembly, the layered material supporting structure, and the joint identification mechanism are all installed on the top plate (103).

3. A multi-strand plate material pulling device according to claim 2, characterized in that The horizontal material guiding assembly comprises two stands (201) fixed on the top plate (103), the two stands (201) are oppositely arranged, a plurality of horizontal shafts (202) are horizontally installed between the two stands (201), the spacing of the plurality of horizontal shafts (202) is equal, and a flat roller (203) is rotatably installed outside the horizontal shaft (202).

4. A multi-strand plate material pulling device according to claim 2, characterized in that The longitudinal material guiding assembly comprises a gate-shaped frame (301) installed on the top plate (103), a main vertical roller (302) is vertically rotatably installed on the gate-shaped frame (301), a motor (307) is installed below the top plate (103), and an output end of the motor (307) is connected to one end of the main vertical roller (302); A driven roller (303) is parallelly arranged on one side of the main vertical roller (302), and both ends of the driven roller (303) are rotatably connected to both ends of an inner frame (304); An inner side of the gate-shaped frame (301) is provided with a slide rail (306), the inner frame (304) is slidably connected to the slide rail (306), one side of the gate-shaped frame (301) is threadedly connected with an adjusting lead screw (305), one end of the adjusting lead screw (305) is fixed with a hand wheel, and the other end of the adjusting lead screw (305) is rotatably connected to the inner frame (304).

5. A multi-strand plate material pulling device according to claim 3, characterized in that The layered material supporting structure comprises a mounting frame (401) arranged on the top plate (103), a plurality of grooves are vertically formed in the mounting frame (401), a flat shaft (402) is embedded in each groove, and the heights of the flat shafts (402) embedded in the grooves correspond to the heights of the horizontal shafts (202) one by one; The flat shaft (402) is rotatably provided with a partition wheel (403), and the flat shaft (402) is fixed to the mounting frame (401) by screws.

6. A multi-strand plate material pulling device according to claim 4, characterized in that The joint recognition mechanism comprises a bottom plate (520), and a fixed clamping roller (510) and a movable clamping roller (512) are arranged vertically and in parallel on the bottom plate (520); The fixed clamping roller (510) is rotatably arranged on a fixed roller shaft (508) through a bearing (509), and one end of the fixed roller shaft (508) is arranged on the bottom plate (520); the movable clamping roller (512) is rotatably arranged on a movable roller shaft (511) through another bearing (509), and one end of the movable roller shaft (511) is mounted on a movable structure; The movable structure is connected with a reset component arranged on the bottom plate (520), the reset component gives the movable structure a deflection force, so that the movable roller shaft (511) on the movable structure has a tendency to approach the fixed roller shaft (508); The bottom plate (520) is further provided with a sensing structure, the sensing structure is matched with the movable structure, and when the spacing between the movable roller shaft (511) and the fixed roller shaft (508) changes, the spacing change amount is amplified through the movable structure to alarm.

7. A multi-strand plate material pulling device according to claim 6, characterized in that The control structure comprises a control panel (602) mounted on the top plate (103) through a support pipe (601), and a main machine built-in the control panel (602) is in communication with the sensing structure respectively, and the main machine is further connected with the motor (307).

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