Modular plastic conveyor belt

Abstract

The invention relates to the technical field of conveying belts, in particular to a modular plastic conveying belt which comprises a rack, a driving gear and a plurality of chain links, the driving gear is rotationally installed on the rack, the chain links are arranged on the driving gear, the multiple chain links are rotationally connected in sequence, and the driving gear is used for driving the chain links to move; a bearing plate is fixedly mounted on each chain link, and the bearing plates are used for bearing articles; a detection device and a repair device are arranged on the bearing plate and the rack, metal bristles for detecting the damage of the bearing plate in an insertion mode are arranged in the detection device, and a repair plate for repairing the damage of the bearing plate in a hot melting mode is arranged in the repair device. According to the invention, the reliability of the modular plastic conveyor belt when bearing heavy weight is improved.

Description

Technical Field

[0001] The invention relates to the technical field of conveyor belts, in particular to a modular plastic conveyor belt. Background Art

[0002] A modular conveyor belt is a conveyor belt that splits the entire conveyor belt into multiple single modules. When in use, multiple modules can be assembled to form a complete conveyor belt, so that the layout length of the transmission belt can be flexibly adjusted to adapt to different logistics scenarios, making up for the disadvantage that the traditional integral conveyor belt is difficult to adjust the length.

[0003] Existing conveyor belts are usually divided into two types: plastic conveyor belts and metal conveyor belts. The difference between the two lies mainly in the load capacity and weight. Among them, the weight of plastic conveyor belts is lighter, so the load of the power source of the conveyor belt is lower, which is conducive to saving energy and extending the service life of the equipment. In addition, plastic has a certain rigidity and considerable elasticity, which is conducive to the modular design of conveyor belts. For example, the patent number: CN110546087B, the patent name: Modular conveyor belt with integrated high-density roller array, shows a modular plastic conveyor belt.

[0004] However, the structural strength and mechanical properties of plastic conveyor belts are relatively poor. When plastic conveyor belts are used to transport heavy objects, such as medium-sized metal parts, the belt surface of the plastic conveyor belt may be scratched by the shape of the objects and damaged. Especially when placing objects on the conveyor belt, since the conveyor belt itself is in motion, while the objects are stationary at the moment of placement, and the friction coefficient of the plastic surface is small, the objects will inevitably slip a little at this time, and these slips will more easily cause damage to the surface of the conveyor belt.

[0005] When the damage on the belt surface of a plastic conveyor belt gradually accumulates with long-term use of the conveyor belt, the mechanical properties of a single conveyor belt module will be reduced and its stress condition will also deteriorate, making it more likely to be damaged and fail under the pressure of the weight of the item the next time it bears the weight of the item, thereby affecting the overall logistics capacity of the conveyor belt.

[0006] For this purpose, a modular plastic conveyor belt is proposed. Summary of the invention

[0007] The object of the present invention is to provide a modular plastic conveyor belt to improve the reliability of the modular plastic conveyor belt when carrying a large weight.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A modular plastic conveyor belt comprises a frame, a driving gear and a plurality of chain links, wherein the driving gear is rotatably mounted on the frame, the chain links are arranged on the driving gear, the plurality of chain links are rotatably connected in sequence, and the driving gear is used to drive the chain links to move; a bearing plate is fixedly mounted on each of the chain links, and the bearing plate is used to carry articles; a detection device and a repair device are arranged on the bearing plate and the frame.

[0010] The detection device includes a wire 1 fixedly installed in a carrier plate, an end of the wire 1 extending out of the carrier plate, a wire 2 fixedly installed on the end of the wire 1 extending out of the carrier plate, a brush fixedly installed on the frame, the brush abutting against the wire 2; a spring sheet fixedly installed on the frame, a plurality of metal bristles fixedly installed on the spring sheet; the metal bristles and the brush are both electrically connected to the computer system.

[0011] The repair device includes a push spring fixedly installed on a frame, a steel repair plate is rotatably installed on the frame, the other end of the push spring is fixedly installed on the repair plate, and a heating wire is fixedly installed inside the repair plate; an electromagnet is fixedly installed on the frame, the electromagnet is electrically connected to the computer system, and the electromagnet is arranged opposite to the repair plate.

[0012] Based on this solution, the present invention forms a single conveyor belt unit with the chain link and the bearing plate thereon as the main components. Therefore, in the assembly process of the present invention, a complete conveyor belt of any length can be formed by combining the chain links to adapt to different working scenes. At the same time, the driving gear is connected to the external motor, and the driving gear can be driven to rotate by the motor, thereby driving the assembled and complete conveyor belt to move with the help of the driving gear to realize the logistics function.

[0013] During the working process of the present invention, when the bearing plate is not damaged, the electromagnet remains in the activated state, thereby sucking the repair plate to prevent the repair plate from contacting the bearing plate. At the same time, the heating wire is powered off, and the push spring is compressed.

[0014] When the load plate is scratched and damaged by heavier goods, cracks will appear on the surface of the load plate due to the scratches. As the cracks worsen due to scratches and other reasons during the subsequent use of the conveyor belt, the depth of the cracks will deepen. When the depth of the cracks reaches a certain level, the wire 1 set in the load plate will be exposed. At this time, the damaged conveyor belt unit will be moved to the detection device as the conveyor belt moves. At this time, the metal bristles on the detection device will be inserted into the cracks of the damaged load plate, so the metal bristles overlap with the wire 1, and the wire 1 is connected to the wire 2. Because the metal bristles and the brush are electrically connected to the external computer system, after the metal bristles overlap with the wire 1, an electrical signal will be sent to the computer system. After the computer system receives the electrical signal, it will control the electromagnet to close and also start the heating wire.

[0015] At this time, the repair plate will be pushed toward the carrier plate under the action of the push spring, so that the repair plate will be against the surface of the carrier plate. At the same time, the activated heating wire will gradually heat the repair plate to the set temperature. After that, the damaged carrier plate will leave the position where the metal bristles are located as the conveyor belt moves as a whole, and continue to move to pass through the part where the repair plate is located, and will be against the repair plate in the process of passing the repair plate, and will be heated by the repair plate. As a result, the heated carrier plate will melt, including the part where the crack is located. Moreover, under the extrusion force of the repair plate, the melted part of the surface of the carrier plate will fuse and adhere to the adjacent molten material. As a result, the cracks on the carrier plate can be repaired, so that the mechanical properties of the carrier plate are restored, and at the same time, the stress concentration phenomenon caused by the existence of cracks is eliminated, so that the reliability of the carrier plate is guaranteed, thereby improving the reliability of the conveyor belt as a whole.

[0016] It is worth adding that when the brush and the metal bristles are connected to the circuit where the computer system is located, the brush can be connected to the neutral line, so that the carrier plate can remain uncharged when the detection device is not triggered, which is conducive to reducing the safety risk caused by the long-term charging of the entire conveyor belt. Correspondingly, the metal bristles are connected to the live wire. Considering that the position of the metal bristles on the frame is relatively fixed, the area where they are located can be well insulated, which is conducive to improving the safety of the present invention.

[0017] In addition, a protrusion can be provided in the middle of the repair plate to protrude in the direction of the carrier plate, and the protruding part of the protrusion is an arc-shaped surface. Therefore, when the push spring pushes the repair plate in the direction of the carrier plate, the repair plate will abut against the carrier plate through the protrusion. Because the protrusion is in the middle of the repair plate, after the electric heating wire heats the repair plate, the adjacent parts of the protrusion are all high-temperature areas, which increases the difficulty of heat dissipation of the protrusion, so it is more conducive to the rapid heating of the protrusion to quickly perform the operation of repairing the carrier plate. The response speed of the present invention is improved.

[0018] Preferably, the first conductor includes a connecting portion and a plurality of detecting portions, and the plurality of detecting portions are connected in parallel via the connecting portion; the detecting portion is sheet-shaped, and the sheet-shaped structure of the detecting portion is arranged vertically, and the plurality of detecting portions are evenly arranged in a horizontal direction.

[0019] By setting up the vertical arrangement of the detection part, it is difficult for the detection part to bend along the normal direction of the surface of the load-bearing plate, which is conducive to preventing the detection part from being damaged during the process of the load-bearing plate carrying goods, and helps to improve the reliability of the present invention. In addition, this can also improve the bending resistance of the load-bearing plate when carrying goods. At the same time, by connecting multiple detection parts in parallel through the connecting part, any detection part can form a circuit loop after being exposed by the crack and contacting the metal bristles, ensuring that the detection device can accurately send an electrical signal to the computer system, which is conducive to improving the reliability of the present invention and the accuracy of detection.

[0020] Preferably, a mounting film is fixedly mounted on the spring sheet, an adhesive portion is fixedly mounted on the mounting film, and the plurality of metal bristles are fixedly mounted on the adhesive portion.

[0021] Through this arrangement, the metal bristles are bonded and fixed to the mounting film using the adhesive portion, which can ensure the soft deformation ability of the metal bristles while limiting the way in which they deform, reducing the degree of outward diffusion of the metal bristles when deformed, which is conducive to limiting the metal bristles within a specific working area. Specifically, during the detection process of the detection device, the ends of the metal bristles will always be able to brush over the surface of the carrier plate, and the ends of some of the metal bristles will not fall outside the surface of the carrier plate due to the outward diffusion of the metal bristles, thereby improving the reliability of the present invention.

[0022] At the same time, thanks to this, the utilization rate of the metal bristles can also be improved, so the arrangement density of the metal bristles can be reduced, thereby further reducing the possibility of the metal bristles spreading outward.

[0023] Preferably, the outer sides of all the metal bristles are coated with an insulating layer, and the ends of the metal bristles extend out of the insulating layer; the multiple metal bristles are divided into long bristles and short bristles according to their own lengths, and the long bristles and short bristles are arranged alternately on the mounting film; the insulating layer is fixedly connected to the adhesive part.

[0024] In the present invention, in order to ensure that the detection device can provide accurate detection results when detecting damage to the carrier plate, the metal bristles will be expected to be placed in the most compact arrangement for transverse arrangement, so that the ends of these metal bristles can fully cover the surface area of ​​the carrier plate. When the carrier plate has cracks due to scratches, if the position of the crack is not directly opposite to the end of any metal bristle, it means that the metal bristle closest to the crack needs to be deformed laterally when trying to insert into the crack to perform the detection operation. However, at this time, multiple metal bristles are closely arranged, so even if the metal bristle tries to insert into the crack, it will be blocked by other adjacent metal bristles and difficult to insert, resulting in difficulty in detecting the crack. For this reason, an insulating layer, long bristles and short bristles are provided, and the long bristles and short bristles are arranged alternately.

[0025] At this time, because the short bristles of the metal bristles all extend out of their corresponding insulating layers, and because the long bristles and the short bristles are arranged in a staggered manner, when the detection device detects cracks on the surface of the carrier plate, when the metal bristles brush over the surface of the carrier plate, the ends of the long bristles and the ends of the short bristles will be connected into two straight lines, that is, the ends of the long bristles and the ends of the short bristles are not on the same straight line. Therefore, on the above two straight lines, the arrangement density of the metal bristles is reduced, so that each metal bristle has a certain amount of activity space in its peripheral part.

[0026] Therefore, each metal bristle can have a larger deformation space, so when the position of the crack on the carrier plate is not directly opposite to the end of any metal bristle, the metal bristle closest to the crack can also be inserted into the crack by bending and deforming horizontally to detect the crack, thereby enabling the repair device to repair the crack. This improves the reliability and detection accuracy of the present invention.

[0027] On this basis, a curved portion that bends toward the carrier plate can be provided at the end of each metal bristle, so that the end of the metal bristle can directly point to the surface of the carrier plate. Then, when the end of the metal bristle passes through a crack on the carrier plate, the end of the metal bristle will first contact the crack, so that it can be directly inserted into the crack to detect the crack. In contrast, if no curved portion is provided, when the metal bristle brushes over the surface of the carrier plate, the metal bristle will brush over the carrier plate with its side. At this time, if the crack is arranged obliquely on the carrier plate, the metal bristle may cross the crack and cause inaccurate detection. Therefore, providing a curved portion is conducive to improving the detection accuracy of the present invention.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. By setting up the detection device and the repair device, during the working process of the present invention, when the load plate is damaged and cracks are generated, the metal bristles on the detection device will be inserted into the cracks of the damaged load plate and send an electrical signal to the computer system, so that the computer system controls the repair plate and the heating wire to start. Thereafter, the cracked part on the damaged load plate is heated and melted by the repair plate, and is fused and adhered with the adjacent molten material. In this way, the crack is repaired, the mechanical properties of the load plate are restored, and the overall reliability of the conveyor belt is improved.

[0030] 2. By setting up the vertical arrangement of the detection part, it is difficult for the detection part to bend along the normal direction of the surface of the load-bearing plate, which is conducive to preventing the detection part from being damaged in the process of the load-bearing plate carrying goods, and helps to improve the reliability of the present invention. In addition, this can also improve the bending resistance of the load-bearing plate when carrying goods. At the same time, by connecting multiple detection parts in parallel through the connecting part, any detection part can form a circuit loop after being exposed by the crack and contacting the metal bristles, ensuring that the detection device can accurately send an electrical signal to the computer system, which is conducive to improving the reliability of the present invention and the accuracy of detection.

[0031] 3. By setting the adhesive part, the metal bristles can be bonded and fixed on the mounting film, which can ensure the soft deformation ability of the metal bristles while limiting the way they deform, reducing the degree of outward diffusion of the metal bristles when deformed, which is conducive to limiting the metal bristles within a specific working area. Specifically, during the detection process of the detection device, the ends of the metal bristles will always be able to brush over the surface of the carrier plate, and the ends of some metal bristles will not fall outside the surface of the carrier plate due to the outward diffusion of the metal bristles, thereby improving the reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 for Figure 1 A schematic diagram of a top view of the section A;

[0034] Figure 3 It is a schematic diagram of the planar main view structure of the present invention;

[0035] Figure 4 for Figure 3 A partial enlarged schematic diagram of part B;

[0036] Figure 5 for Figure 4 A partial enlarged schematic diagram of part C in the middle;

[0037] Figure 6 It is a schematic diagram of the structural relationship between the metal bristles and the mounting membrane;

[0038] Figure 7 It is a schematic diagram of the structural state when the repair plate and the bearing plate are against each other;

[0039] Figure 8 It is a schematic diagram of the coordination relationship between the metal bristles and the detection part after the bearing plate is damaged.

[0040] In the figure: 1. frame; 2. load-bearing plate; 3. chain link; 4. brush; 5. crack caused by scratch; 11. repair plate; 12. electromagnet; 13. push spring; 14. heating wire; 15. spring; 21. wire one; 22. metal bristles; 23. insulating layer; 24. mounting film; 31. driving gear; 111. protrusion; 211. detection part; 212. connecting part; 213. wire two; 221. long bristles; 222. short bristles; 223. bending part. DETAILED DESCRIPTION

[0041] The following content will use the drawings listed in the aforementioned "Description of Drawings" section to clearly explain the specific implementation methods of the present invention, in the hope that readers can have a more complete and objective understanding of the working principle of the present invention and the corresponding technical effects.

[0042] like Figures 1 to 8 FIG. 1 shows a specific embodiment of the present invention.

[0043] When the present invention is installed, first take out the frame 1, the driving gear 31 and the multiple chain links 3, the driving gear 31 is rotatably installed on the frame 1, the chain links 3 are set on the driving gear 31, the multiple chain links 3 are rotatably connected in sequence, and the driving gear 31 is used to drive the chain links 3 to move; each chain link 3 is fixedly installed with a bearing plate 2, and the bearing plate 2 is used to carry items; the bearing plate 2 and the frame 1 are provided with a detection device and a repair device.

[0044] Among them, the detection device includes a wire 21 fixedly installed in the carrier plate 2, the end of the wire 21 extends out of the carrier plate 2, and a wire 213 is fixedly installed on the end of the wire 21 extending out of the carrier plate 2. A brush 4 is fixedly installed on the frame 1, and the brush 4 is against the wire 213; a spring 15 is fixedly installed on the frame 1, and a plurality of metal bristles 22 are fixedly installed on the spring 15; the metal bristles 22 and the brush 4 are electrically connected to the computer system.

[0045] The repair device includes a push spring 13 fixedly installed on the frame 1, and a steel repair plate 11 is rotatably installed on the frame 1. The other end of the push spring 13 is fixedly installed on the repair plate 11. A heating wire 14 is fixedly installed inside the repair plate 11, and the heating wire 14 is electrically connected to the computer system; an electromagnet 12 is fixedly installed on the frame 1, and the electromagnet 12 is electrically connected to the computer system. The electromagnet 12 and the repair plate 11 are arranged opposite to each other.

[0046] In addition, the wire 1 21 includes a connecting portion 212 and a plurality of detection portions 211, and the plurality of detection portions 211 are connected in parallel through the connecting portion 212; the detection portion 211 is sheet-shaped, and the sheet-shaped structure of the detection portion 211 is arranged vertically, and the plurality of detection portions 211 are arranged uniformly in the horizontal direction. A mounting film 24 is fixedly mounted on the spring sheet 15, and an adhesive portion is fixedly mounted on the mounting film 24, and a plurality of metal bristles 22 are fixedly mounted on the adhesive portion. A protrusion 111 is provided at the middle portion of the repair plate 11, and the protrusion 111 protrudes toward the direction of the carrier plate 2, and the protruding surface of the protrusion 111 is an arc-shaped surface. The outer sides of all the metal bristles 22 are covered with an insulating layer 23, and the ends of the metal bristles 22 extend out of the insulating layer 23; the multiple metal bristles 22 are divided into long bristles 221 and short bristles 222 according to their own lengths, and the long bristles 221 and the short bristles 222 are arranged alternately on the mounting film 24; the insulating layer 23 is fixedly connected to the adhesive part. A bending part 223 is provided on the end of the metal bristle 22, and the bending part 223 is bent toward the direction of the carrier plate 2.

[0047] When the present invention is working, the present invention forms a single conveyor belt unit with the chain link 3 and the bearing plate 2 thereon as the main components. Therefore, in the assembly process of the present invention, a complete conveyor belt of any length can be formed by combining the chain links 3, so as to adapt to different working scenes. At the same time, the driving gear 31 is connected to an external motor, and the driving gear 31 can be driven to rotate by the motor, so that the assembled and complete conveyor belt is driven to move with the help of the driving gear 31 to realize the logistics function.

[0048] During the working process of the present invention, when the supporting plate 2 is not damaged, the electromagnet 12 remains in the activated state, thereby sucking the repair plate 11 to prevent the repair plate 11 from contacting the supporting plate 2. At the same time, the heating wire 14 is powered off, and the push spring 13 is compressed.

[0049] When the load plate 2 is scratched and damaged by heavier goods, cracks will be generated on the surface of the load plate 2 due to the scratches. As the cracks deteriorate due to scratches and other reasons during the subsequent use of the conveyor belt, the depth of the cracks will deepen. When the depth of the cracks reaches a certain level, the wire 1 21 set in the load plate 2 will be exposed. At this time, the damaged conveyor belt unit will be moved to the detection device as the conveyor belt moves. At this time, the metal bristles 22 on the detection device will be inserted into the cracks of the damaged load plate 2, so the metal bristles 22 overlap with the wire 1 21, and the wire 1 21 is connected to the wire 2 213. Because the metal bristles 22 and the brush 4 are both electrically connected to the external computer system, after the metal bristles 22 overlap with the wire 1 21, an electrical signal will be sent to the computer system. After the computer system receives the electrical signal, it will control the electromagnet 12 to be turned off, and the heating wire 14 will also be started.

[0050] At this time, the repair plate 11 will be pushed toward the carrier plate 2 under the action of the push spring 13, so that the repair plate 11 will be against the surface of the carrier plate 2, and at the same time, the activated heating wire 14 will gradually heat the repair plate 11 to the set temperature. After that, the damaged carrier plate 2 will leave the position where the metal bristles 22 are located as the conveyor belt moves as a whole, and continue to move to pass through the part where the repair plate 11 is located, and will be against the repair plate 11 in the process of passing through the repair plate 11, and will be heated by the repair plate 11. As a result, the heated carrier plate 2 will melt, including the part where the crack is located. Moreover, under the extrusion force of the repair plate 11, the melted part of the surface of the carrier plate 2 will fuse and adhere to the adjacent molten material. As a result, the cracks on the carrier plate 2 can be repaired, so that the mechanical properties of the carrier plate 2 are restored, and at the same time, the stress concentration phenomenon caused by the existence of the cracks is eliminated, so that the reliability of the carrier plate 2 is guaranteed, thereby improving the reliability of the conveyor belt as a whole.

[0051] It is worth adding that when the brush 4 and the metal bristles 22 are connected to the circuit where the computer system is located, the brush 4 can be connected to the neutral line, so that the carrier plate 2 can remain uncharged when the detection device is not triggered, which is conducive to reducing the safety risk caused by the long-term charging of the entire conveyor belt. Correspondingly, the metal bristles 22 are connected to the live wire. Considering that the position of the metal bristles 22 on the frame 1 is relatively fixed, the area where they are located can be well insulated, which is conducive to improving the safety of the present invention.

[0052] In addition, a protrusion 111 can be provided at the middle part of the repair plate 11 to protrude in the direction of the carrier plate 2, and the protruding part of the protrusion 111 is an arc-shaped surface. Therefore, when the push spring 13 pushes the repair plate 11 in the direction of the carrier plate 2, the repair plate 11 will abut against the carrier plate 2 through the protrusion 111. Because the protrusion 111 is at the middle part of the repair plate 11, after the electric heating wire 14 heats the repair plate 11, the adjacent parts of the protrusion 111 are all high-temperature areas, thereby increasing the heat dissipation difficulty of the protrusion 111, so it is more conducive to the rapid heating of the protrusion 111 to quickly perform the operation of repairing the carrier plate 2. Improve the response speed of the present invention.

[0053] It is worth noting that by setting the detection part 211 to be arranged vertically, it is difficult for the detection part 211 to bend along the normal direction of the surface of the load-bearing plate 2, which is conducive to preventing the detection part 211 from being damaged in the process of the load-bearing plate 2 carrying goods, and helps to improve the reliability of the present invention. In addition, this can also improve the bending resistance of the load-bearing plate 2 when carrying goods. At the same time, by connecting multiple detection parts 211 in parallel through the connecting part 212, any detection part 211 can form a circuit loop after being exposed by the crack and contacting the metal bristles 22, ensuring that the detection device can accurately send an electrical signal to the computer system, which is conducive to improving the reliability of the present invention and the accuracy of detection.

[0054] It should be emphasized that, based on the contents recorded in the above text, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific implementation methods have been provided for this purpose, ordinary technicians in this field can still make conventional substitutions, deformations, etc. based on the given technical solutions without creative labor to achieve the same technical effects, based on the full understanding of the working principle of the present invention, but this should not be considered to exceed the scope of the present invention. Specifically, the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A modular plastic conveyor belt, comprising a frame (1), a driving gear (31) and a plurality of chain links (3), wherein the driving gear (31) is rotatably mounted on the frame (1), the chain links (3) are arranged on the driving gear (31), the plurality of chain links (3) are rotatably connected in sequence, and the driving gear (31) is used to drive the chain links (3) to move; a bearing plate (2) is fixedly mounted on each of the chain links (3), and the bearing plate (2) is used to carry articles; characterized in that: The carrier plate (2) and the frame (1) are provided with a detection device and a repair device, wherein the detection device is provided with metal bristles (22) for detecting damage to the carrier plate (2) in an insertion manner, and the repair device is provided with a repair plate (11) for repairing damage to the carrier plate (2) in a hot-melt manner.

2. A modular plastic conveyor belt according to claim 1, characterized in that: The detection device comprises a first conductor (21) fixedly mounted in a carrier plate (2), an end of the first conductor (21) extending out of the carrier plate (2), a second conductor (213) fixedly mounted on one end of the first conductor (21) extending out of the carrier plate (2), a brush (4) fixedly mounted on the frame (1), the brush (4) abutting against the second conductor (213); a spring sheet (15) fixedly mounted on the frame (1), a plurality of metal bristles (22) fixedly mounted on the spring sheet (15); the metal bristles (22) and the brush (4) are both electrically connected to a computer system.

3. A modular plastic conveyor belt according to claim 2, characterized in that: The repair device comprises a push spring (13) fixedly mounted on a frame (1); a steel repair plate (11) is rotatably mounted on the frame (1); the other end of the push spring (13) is fixedly mounted on the repair plate (11); a heating wire (14) is fixedly mounted inside the repair plate (11); the heating wire (14) is electrically connected to a computer system; an electromagnet (12) is fixedly mounted on the frame (1); the electromagnet (12) is electrically connected to the computer system; the electromagnet (12) and the repair plate (11) are arranged opposite to each other.

4. A modular plastic conveyor belt according to claim 3, characterized in that: The wire 1 (21) comprises a connecting portion (212) and a plurality of detection portions (211), wherein the plurality of detection portions (211) are connected in parallel via the connecting portion (212); the detection portion (211) is sheet-shaped, and the sheet-shaped structure of the detection portion (211) is arranged vertically, and the plurality of detection portions (211) are evenly arranged in a horizontal direction.

5. A modular plastic conveyor belt according to claim 2, characterized in that: A mounting film (24) is fixedly mounted on the spring sheet (15), an adhesive portion is fixedly mounted on the mounting film (24), and a plurality of metal bristles (22) are fixedly mounted on the adhesive portion.

6. A modular plastic conveyor belt according to claim 3, characterized in that: A protruding portion (111) is provided at the middle portion of the repair plate (11), the protruding portion (111) protrudes towards the bearing plate (2), and the protruding surface of the protruding portion (111) is an arc-shaped surface.

7. A modular plastic conveyor belt according to claim 5, characterized in that: The outer sides of all the metal bristles (22) are coated with an insulating layer (23), and the ends of the metal bristles (22) extend out of the insulating layer (23); the plurality of metal bristles (22) are divided into long bristles (221) and short bristles (222) according to their own lengths, and the long bristles (221) and the short bristles (222) are arranged alternately on the mounting film (24); and the insulating layer (23) is fixedly connected to the adhesive portion.

8. A modular plastic conveyor belt according to claim 7, characterized in that: A bent portion (223) is provided on the end of the metal bristle (22), and the bent portion (223) bends in the direction of the carrying plate (2).

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