Self-detection segmented connection carton chain type conveying belt and method

Abstract

The invention discloses a self-detection sectional connection carton chain type conveying belt and method, and relates to the field of conveying equipment. The conveying belt comprises a rack, a transmission chain, a base and a transverse strip, the base is in static friction fastening with the connecting part of the transverse strip through an insertion roller, and tooth grooves in the two sides of the transverse strip are matched in a staggered insertion mode. A first sensing mechanism and a second sensing mechanism are arranged below the lower-layer transmission chain and detect the distance between the gap of the transverse strip and the supporting part respectively, and an indicator lamp changes color for prompting when abnormity occurs. In the operation process, the transmission chain drives the base and the transverse strips to convey cartons, the sensing mechanism monitors in real time, positioning maintenance can be conducted when abnormity occurs, and only the single transverse strip needs to be replaced. The problems that traditional transmission equipment is low in transmission efficiency, high in maintenance cost and difficult in fault positioning are solved, and transmission stability and production benefits are improved.

Description

Technical Field

[0001] The present invention relates to the field of transmission equipment, and in particular to a carton chain transmission belt and method for self-detecting segmented connection. Background Art

[0002] In the modern logistics and packaging industry, carton transmission is a key link in the production process. Its transmission efficiency and the convenience of equipment maintenance directly affect the overall production efficiency. Traditional carton transmission equipment generally uses rollers to drive belts to rotate. This transmission method has exposed the following significant defects in long-term operation: 1. Transmission efficiency attenuation problem: As a core transmission component, the belt will experience significant wear and deformation due to friction during continuous load operation. As the belt is used for a long time, the surface roughness of the belt decreases, resulting in a decrease in friction between the belt and the roller, which in turn causes slippage. This will not only reduce the stability of the transmission speed, but may also cause a lag in the transmission of carton parts, seriously affecting the coordination of upstream and downstream processes, resulting in a decrease in the overall efficiency of the production line.

[0003] Second, the maintenance cost is high and time-consuming: When traditional transmission equipment fails, the entire transmission system needs to be shut down and disassembled. Since the belt is usually a continuous integral structure, even if only a local abnormality occurs (such as a certain section is worn or broken), the entire belt needs to be dismantled and replaced, resulting in a waste of production costs. Moreover, this process is not only cumbersome to operate, but also consumes a lot of manpower and time costs, and will also cause the production line to stagnate for a long time, resulting in significant economic losses.

[0004] In addition, the traditional transmission system lacks real-time detection and fault location mechanisms. When transmission anomalies occur, it is difficult for operators to quickly determine the location and type of the fault. Manual inspection is often required section by section, further extending downtime and reducing production continuity.

[0005] In summary, the existing carton transmission technology has obvious deficiencies in transmission efficiency, maintenance convenience, cost control, etc. How to achieve efficient and stable operation of the conveyor belt, rapid fault detection and precise maintenance, while reducing unnecessary waste of resources has become a technical problem that needs to be solved in this field. Summary of the invention

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention provides a carton chain conveyor belt with self-detecting segmented connections, comprising a frame and a transmission chain wound around the frame, the transmission chain being provided with a plurality of equally spaced bases, the base comprising a transverse plate located above the transmission chain, a group of shafts being fixedly installed above the transverse plate, and rollers being rotatably installed on the periphery of the shafts.

[0007] A horizontal strip is installed on the upper sides of two adjacent bases. The horizontal strip includes a support part for supporting the carton parts and two connecting parts located below the support part. Among them, one connecting part of the horizontal strip is fixedly connected to the inserting roller of one base, and the other connecting part of the horizontal strip is fixedly connected to the adjacent inserting roller of the adjacent base.

[0008] First side tooth grooves are arranged at equal intervals on one side of the horizontal strip, and second side tooth grooves are arranged at equal intervals on the other side. The first side tooth grooves of the horizontal strip are inserted and matched with the second side tooth grooves of the adjacent horizontal strip in a staggered manner.

[0009] A first sensing mechanism and a second sensing mechanism for detecting the lower horizontal strip are arranged below the lower transmission chain. The first sensing mechanism is provided with two optoelectronic signal probes for detecting the gap between adjacent horizontal strips, and the second sensing mechanism is provided with a distance probe facing the support part. Both the first sensing mechanism and the second sensing mechanism are independently provided with indicator lights.

[0010] As a preferred technical solution of the conveyor belt of the present invention: Chain connecting plates for cooperating with the transmission chain are arranged on both sides of the bottom surface of the cross plate, and the transmission chain is located in the inner surrounding area of the chain connecting plates on both sides of the bottom surface of the cross plate.

[0011] As a preferred technical solution of the conveyor belt of the present invention: A group of first side plates are arranged on one side of the top surface of the cross plate, and a group of second side plates aligned with the first side plates are arranged on the other side. The first side plates are provided with cap embedding slot holes, and the second side plates are provided with rod through holes. One end of the shaft rod is provided with an end cap, and a threaded part is arranged on the circumferential side of the rod body at the other end. The shaft rod passes through the cap embedding slot holes and the rod through holes and is installed with nuts. The inserting roller is rotatably installed between the first side plates and the second side plates with aligned positions.

[0012] As a preferred technical solution of the conveyor belt of the present invention: A rod hole is opened at the horizontal axis position of the inserting roller, and the shaft rod movably passes through the rod hole of the inserting roller.

[0013] As a preferred technical solution of the conveyor belt of the present invention: The connecting part is provided with a horizontal slot, and the inner wall surface of the horizontal slot is a rough surface. The outer circumferential surface of the inserting roller is a rough circumferential surface, and the inserting roller is pressed and inserted into the horizontal slot of the connecting part to form a static friction connection.

[0014] As a preferred technical solution of the conveyor belt of the present invention: The first side tooth grooves and the second side tooth grooves of the horizontal strip have the same width dimension.

[0015] As a preferred technical solution of the conveyor belt of the present invention: The two optoelectronic signal probes of the first sensing mechanism are closely attached and installed, and the horizontal distance dimension of the optoelectronic signals emitted vertically upward by the two optoelectronic signal probes is greater than the assembly gap error between adjacent two horizontal strips.

[0016] The present invention provides a using method of a carton chain conveyor belt, including the following contents: In the first link, a transmission chain is wound around a frame and rotates, and a plurality of equally spaced bases installed on the transmission chain move together with the transmission chain.

[0017] In the second step, the outer periphery of the shaft fixedly installed above the horizontal plate of the base is rotatably installed with an insert roller, and the upper sides of the two adjacent bases are tightly connected with the connecting part of the horizontal strip through the insert roller, so that the horizontal strip moves with the base.

[0018] In the third stage, multiple tightly connected horizontal belts move along the direction of movement of the transmission chain to transport the carton parts.

[0019] In step four, the first sensor mechanism below the lower transmission chain detects the gaps between adjacent lower horizontal strips through two photoelectric signal probes to determine whether the transmission chain or the base is abnormally loose or whether the horizontal strips are misaligned.

[0020] In step five, the second sensor mechanism below the lower transmission chain detects the distance to the lower base support part through the distance probe to determine whether there is any abnormality in the transmission chain, base or horizontal strip.

[0021] Step six: when the first sensor mechanism or the second sensor mechanism detects an abnormal signal, the corresponding indicator light changes from green to red and the system issues a prompt.

[0022] In step seven, after the system detects an abnormal signal on the conveyor belt, the conveyor belt continues to work. When it is ready for maintenance, the maintenance personnel presses the maintenance button on the control panel and the conveyor belt rotates again.

[0023] Step eight: When the system detects an abnormal signal again through the first sensor mechanism or the second sensor mechanism, the conveyor belt stops moving, and the maintenance personnel quickly find the abnormal position of the horizontal strip according to the indicator light prompts, and perform corresponding maintenance or disassemble and replace the worn or deformed horizontal strip.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a combination of a transmission chain and a segmented horizontal belt, and the static friction between the insert roller and the connection part of the horizontal belt is fastened to avoid the slipping problem caused by overall wear of the traditional belt. The first side tooth groove and the second side tooth groove of the horizontal belt are staggered and inserted to ensure seamless connection between adjacent horizontal belts. Even when the transmission chain turns, no extrusion or friction will occur, which improves the transmission stability; and the insert roller can rotate freely relative to the shaft rod, and the insert roller and the connection part of the horizontal belt are tightly connected, so that the friction force when the horizontal belt moves is mainly borne by the rotation of the insert roller, reducing the direct wear of the connection part and extending the service life of the horizontal belt.

[0025] 2. In the present invention, the horizontal strip is independently connected to the base through the insertion roller. When a certain section of the horizontal strip is worn or deformed, only a single horizontal strip needs to be disassembled and replaced, without the need to stop the machine to disassemble the entire conveyor belt, greatly reducing the maintenance time and waste of resources.

[0026] 3. Through the gap detection mode of the first sensing mechanism and the distance detection mode of the second sensing mechanism in the present invention, the comprehensiveness of the detection of each component of the conveyor belt is improved. And through the dynamic cooperation of the indicator lights, the fault location can be quickly located, avoiding manual section-by-section troubleshooting and shortening the downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the chain conveyor belt of the present invention.

[0028] Figure 2 is Figure 1 a partially enlarged schematic diagram of the structure at A in

[0029] Figure 3 It is a schematic diagram of the connection structure of the base and the horizontal strip in the present invention.

[0030] Figure 4 is Figure 3 a bottom-side upward view of the structure.

[0031] Figure 5 It is a disassembled and separated schematic diagram of the base, the horizontal strip and related components in the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the horizontal strip in the present invention.

[0033] Figure 7 It is a top view of the staggered distribution of the first side tooth grooves and the second side tooth grooves of the horizontal strip.

[0034] Wherein: 1-frame; 2-driving chain; 3-base, 301-horizontal plate, 302a-first side plate, 302b-second side plate, 3021-cap groove hole, 3022-rod perforation, 3023-nut, 303-chain connecting plate; 4-horizontal strip, 401-supporting part, 402-connecting part, 403-horizontal slot, 404-first side tooth groove, 405-second side tooth groove; 5-insertion roller, 501-rough toroidal surface, 502-rod hole; 6-shaft rod, 601-end cap, 602-threaded part; 7-first sensing mechanism; 8-second sensing mechanism; 9-optical signal probe; 10-distance probe; 11-indicator light; 12-cardboard box part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Embodiment 1. The present invention designs a carton chain conveyor belt with self-detection and segmented connection, as shown in Figure 1 , Figure 2 , Figure 5 , which includes components such as a frame 1, a drive chain 2, a base 3, a cross strip 4, an insertion roller 5, a shaft rod 6, a first sensing mechanism 7, a second sensing mechanism 8, etc. The specific structural configuration is as follows: As shown in Figure 1 , the frame 1 serves as the support frame of the conveyor belt and is used to install components such as the drive chain 2. The drive chain 2 is wound around the frame 1 and drives the base 3 to move by rotation, which is the core drive component of the conveyor belt.

[0037] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , the base 3 is installed on the drive chain 2 and is evenly distributed. It includes a cross plate 301, a first side plate 302a, and a chain connection plate 303. The cross plate 301 is located above the drive chain 2 and serves as the main support structure of the base 3. The first side plate 302a is a group of side plates provided on one side of the top surface of the cross plate 301 and is provided with a cap groove hole 3021. The second side plate 302b is a group of side plates provided on the other side of the top surface of the cross plate 301, aligned with the first side plate 302a, and is provided with a rod through hole 3022. The chain connection plate 303 is fixedly connected to both sides of the bottom surface of the cross plate 301. The chain connection plate 303 is cooperatively installed with the drive chain 2, and the drive chain 2 is located inside it to prevent the drive chain 2 from being exposed.

[0038] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 6 , the cross strip 4 spans across the upper sides of two adjacent bases 3. The cross strip 4 includes a support portion 401, a connection portion 402, a cross slot 403, a first side tooth groove 404, and a second side tooth groove 405. The support portion 401 is located on the upper side of the cross strip 4 and is used to support the carton part 12. The connection portion 402 is located on the lower side of the support portion 401. Each cross strip 4 has a connection portion 402 at both ends and is fixedly connected to the base 3 through the insertion roller 5. Combining Figure 7 , the first side tooth groove 404 is evenly arranged on one side of the cross strip 4, and the second side tooth groove 405 is evenly arranged on the other side of the cross strip 4. The first side tooth groove 404 of the cross strip 4 is inserted and cooperated with the second side tooth groove 405 of the adjacent cross strip 4 in a staggered manner. Among them, the widths of the first side tooth groove 404 and the second side tooth groove 405 are the same.

[0039] like Figure 3 , Figure 5 The inserting roller 5 is rotatably mounted on the outer periphery of the shaft 6 of the base 3, and is provided with a rough annular surface 501 and a rod hole 502. The rough annular surface 501 is located on the outer annular surface of the inserting roller 5, and cooperates with the rough surface of the inner wall of the transverse slot 403 to form a static friction connection. The rod hole 502 is provided at the transverse axis of the inserting roller 5, and the shaft 6 passes through it, so that the inserting roller 5 can rotate freely relative to the shaft 6.

[0040] like Figure 4 , Figure 5 The shaft 6 is fixedly mounted above the horizontal plate 301 of the base 3, and is used to rotatably support the inserting roller 5, and includes an end cap 601 and a threaded portion 602. The end cap 601 is a hexagonal cap at one end of the shaft 6, and is embedded in the cap insertion slot 3021 of the first side plate 302a. The other end of the shaft 6 is provided with a threaded portion 602, and the threaded portion 602 passes through the rod through hole 3022 of the second side plate 302b and is fixed by a nut 3023.

[0041] like Figure 1 , Figure 2 The first sensor mechanism 7 is located below the lower transmission chain 2 and is used to detect the gap between adjacent horizontal strips 4. The first sensor mechanism 7 is provided with two photoelectric signal probes 9. The two photoelectric signal probes 9 are closely fitted and emit photoelectric signals vertically upward. The spacing between the two photoelectric signal probes 9 for emitting photoelectric signals upward is greater than the assembly gap error of adjacent horizontal strips 4. The first sensor mechanism 7 is provided with an indicator light 11, which changes from green to red when an abnormality is detected.

[0042] like Figure 1 , Figure 2 The second sensor mechanism 8 is located below the lower transmission chain 2, facing the support portion 401 of the horizontal strip 4. The second sensor mechanism 8 is provided with a distance probe 10 for detecting the distance of the support portion 401 and determining whether the component shape is abnormal. The second sensor mechanism 8 is also provided with an indicator light 11, which changes from green to red when an abnormality is detected.

[0043] Embodiment 2: The assembly method of the main components of the transmission belt of the present invention is as follows: First, align the connecting portion 402 on one side of the horizontal strip 4 with the inserting roller 5 of the base 3, and insert the inserting roller 5 into the horizontal slot 403 of the connecting portion 402 by extrusion. The outer ring surface of the inserting roller 5 is a rough ring surface 501, and the inner wall surface of the horizontal slot 403 is a rough surface. The two are fastened together by static friction to ensure that the inserting roller 5 and the connecting portion 402 cannot rotate freely.

[0044] Then, place the connecting portion 402 of the horizontal strip 4, which has been preliminarily connected to the insertion roller 5, between the first side plate 302a and the second side plate 302b above the base 3. The first side plate 302a is provided with an insertion cap groove hole 3021, and the second side plate 302b is provided with a rod through hole 3022. It is necessary to ensure that the positions of the insertion cap groove hole 3021, the rod hole 502 of the insertion roller 5, and the rod through hole 3022 are aligned. Insert the shaft rod 6 from one side of the insertion cap groove hole 3021, so that the shaft rod 6 sequentially passes through the insertion cap groove hole 3021, the rod hole 502, and the rod through hole 3022. One end of the shaft rod 6 is an internal hexagonal end cap 601, which is embedded in the insertion cap groove hole 3021; the other end is a threaded portion 602, which after passing through the rod through hole 3022, is fixed by a nut 3023, enabling the insertion roller 5 to rotate freely around the shaft rod 6.

[0045] Finally, along the movement direction of the drive chain 2, repeat the above steps to install the subsequent horizontal strips 4, ensuring that the second side tooth grooves 405 of the previous horizontal strip 4 and the first side tooth grooves 404 of the subsequent horizontal strip 4 are interlaced and inserted.

[0046] Through the above steps, modular assembly of the base 3, the insertion roller 5, the shaft rod 6, and the horizontal strip 4 can be achieved. Utilizing static friction connection and interlaced tooth groove cooperation ensures the stable structure and smooth transmission of the conveyor belt, and at the same time facilitates the disassembly and replacement of a single horizontal strip 4 in the later stage.

[0047] Embodiment 3. The operation, detection, and maintenance methods of the chain conveyor belt of the present invention are as follows: I. Operation process Power transmission: The drive chain 2 is wound around the frame 1 and rotates, driving the bases 3 distributed at equal intervals to move synchronously.

[0048] Horizontal strip linkage: The base 3 is firmly connected to the connecting portion 402 of the horizontal strip 4 through the insertion roller 5, causing the horizontal strip 4 to move along with the base 3 in the movement direction of the drive chain 2, forming a continuous transmission surface to support and convey the carton parts 12.

[0049] II. Detection mechanism (I) The first sensing mechanism 7 (gap detection) Function: Monitor the gap between adjacent horizontal strips 4 to determine whether the drive chain 2 and the base 3 are abnormally loose or whether the horizontal strip 4 is misaligned.

[0050] Structure: Two closely attached optoelectronic signal probes 9 emit optoelectronic signals vertically upward. The horizontal distance of the optoelectronic signals is greater than the assembly gap error between adjacent horizontal strips 4 to avoid misjudgment.

[0051] Normal state: The horizontal strips 4 are closely connected, the optoelectronic signals are blocked by the horizontal strips 4, and the indicator light 11 is green.

[0052] Abnormal state: If the gap is detected by both probes simultaneously (the signal is not blocked), it indicates looseness or misalignment. The indicator light 11 turns red, and the system gives an abnormal prompt.

[0053] (2) The second sensing mechanism 8 (distance detection) Function: Monitor the distance of the support part 401 of the horizontal strip 4 to determine whether abnormal conditions such as deformation or wear occur in the drive chain 2, the base 3, or the horizontal strip 4.

[0054] Structure: A distance probe 10 facing the support part 401. The distance probe 10 can use laser ranging or an infrared sensor.

[0055] Normal state: When the distance of the support part 401 is within the preset range, the indicator light 11 is green.

[0056] Abnormal state: If the distance exceeds the standard, such as the support part 401 sinking or protruding, it indicates that the component is abnormal. The indicator light 11 turns red, and the system gives an abnormal prompt.

[0057] III. Maintenance process When the system detects an abnormal signal, the conveyor belt continues to run without stopping immediately to avoid affecting the continuity of the production line. The corresponding indicator light 11 changes from green to red, prompting the operator that there is a fault. However, the system retains the abnormal record and requires manual reset.

[0058] After the maintenance personnel confirm that it is okay to stop the machine, press the "maintenance button" on the control panel. The conveyor belt continues to rotate until it automatically stops when an abnormal signal is detected again. After the conveyor belt stops, quickly locate the position of the abnormal horizontal strip 4 according to the prompt of the indicator light 11. If it is slightly loose or misaligned, adjust the connection of the base 3 or the drive chain 2. If the horizontal strip 4 is severely worn or deformed, directly disassemble the single abnormal horizontal strip 4 and replace it with a new part without disassembling the entire conveyor belt.

[0059] After the maintenance is completed, manually reset the abnormal signal of the system. The indicator light 11 returns to green, and the conveyor belt resumes operation.

[0060] Through the segmented chain drive structure, dual-sensor real-time detection, and modular maintenance design, the present invention systematically solves the problems of low transmission efficiency, high maintenance cost, and difficult fault location of traditional transmission equipment, significantly improving the stability, intelligent level, and production efficiency of carton transmission, meeting the requirements of the modern logistics and packaging industries for high-efficiency and low-cost equipment.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self - detecting segmented - connected carton chain conveyor belt, including a frame (1) and a drive chain (2) wound around the frame (1), characterized in that: A plurality of bases (3) are installed on the drive chain (2) at equally - spaced intervals; The base (3) includes a cross - plate (301) located above the drive chain (2). A set of shaft rods (6) are fixedly installed above the cross - plate (301), and plug rollers (5) are rotatably installed around the shaft rods (6); A cross - strip (4) is installed on the upper sides of two adjacent bases (3). The cross - strip (4) includes a support portion (401) for supporting the carton piece (12) and two connecting portions (402) located below the support portion (401). Among them, one connecting portion (402) of the cross - strip (4) is fixedly connected to the plug roller (5) of a base (3), and the other connecting portion (402) of the cross - strip (4) is fixedly connected to the adjacent plug roller (5) of the adjacent base (3); A first side tooth groove (404) is provided at equally - spaced intervals on one side of the cross - strip (4), and a second side tooth groove (405) is provided at equally - spaced intervals on the other side. The first side tooth groove (404) of the cross - strip (4) is inserted and fitted with the second side tooth groove (405) of the adjacent cross - strip (4) in a staggered manner; A first sensing mechanism (7) and a second sensing mechanism (8) for detecting the lower - layer cross - strip (4) are arranged below the lower - layer drive chain (2). The first sensing mechanism (7) is provided with two photoelectric signal probes (9), the second sensing mechanism (8) is provided with a distance probe (10), and the first sensing mechanism (7) and the second sensing mechanism (8) are both independently provided with indicator lights (11).

2. The self - detecting segmented - connected carton chain conveyor belt according to claim 1, characterized in that: Chain connecting plates (303) for cooperating with the drive chain (2) are provided on both sides of the bottom surface of the cross - plate (301), and the drive chain (2) is located in the inner - perimeter area of the chain connecting plates (303) on both sides of the bottom surface of the cross - plate (301).

3. The self - detecting segmented - connected carton chain conveyor belt according to claim 1, characterized in that: A set of first side plates (302a) are provided on one side of the top surface of the cross - plate (301), and a set of second side plates (302b) aligned with the first side plates (302a) are provided on the other side; The first side plate (302a) is provided with a cap - embedding slot hole (3021), and the second side plate (302b) is provided with a rod - passing hole (3022); One end of the shaft rod (6) is provided with an end cap (601), and a threaded portion (602) is provided on the circumferential side of the rod body at the other end. The shaft rod (6) passes through the cap - embedding slot hole (3021) and the rod - passing hole (3022) and is installed with a nut (3023); The plug roller (5) is rotatably installed between the first side plates (302a) and the second side plates (302b) with positions aligned.

4. The self - detecting segmented - connected carton chain conveyor belt according to claim 1, characterized in that: A rod hole (502) is opened at the horizontal axis center position of the plug roller (5), and the shaft rod (6) movably passes through the rod hole (502) of the plug roller (5).

5. A self-detecting segmented-connected carton chain conveyor belt according to claim 1, characterized in that: The connecting part (402) is provided with a horizontal slot (403), and the inner wall surface of the horizontal slot (403) is a rough surface; The outer ring surface of the plug roller (5) is a rough ring surface (501), and the plug roller (5) is squeezed and inserted into the horizontal slot (403) of the connecting part (402) to form a static friction connection.

6. A self-detecting segmented-connected carton chain conveyor belt according to claim 1, characterized in that: The first side tooth groove (404) and the second side tooth groove (405) of the horizontal strip (4) have the same width dimension.

7. A self-detecting segmented-connected carton chain conveyor belt according to claim 1, characterized in that: The two photoelectric signal probes (9) of the first sensing mechanism (7) are closely attached and installed, and the horizontal spacing dimension of the photoelectric signals emitted vertically upward by the two photoelectric signal probes (9) is greater than the assembly gap error between adjacent horizontal strips (4).

8. A method for using a carton chain conveyor belt, applied to a self-detecting segmented-connected carton chain conveyor belt according to any one of claims 1 to 7, characterized in that: In step one, the drive chain (2) is wound around the frame (1) and rotated, and a plurality of equally spaced bases (3) installed on the drive chain (2) move together with the drive chain (2); In step two, a plug roller (5) is rotatably installed around the outer periphery of a shaft rod (6) fixedly installed above the horizontal plate (301) of the base (3), and the upper sides of adjacent two bases (3) are tightly connected to the connecting part (402) of the horizontal strip (4) through the plug roller (5), so that the horizontal strip (4) moves with the base (3); In step three, a plurality of tightly connected horizontal strips (4) move along the moving direction of the drive chain (2) to convey the carton parts (12); In step four, the first sensing mechanism (7) below the lower drive chain (2) detects the gap between adjacent lower horizontal strips (4) through two photoelectric signal probes (9) to judge whether the drive chain (2), the base (3) is abnormally loose or whether the horizontal strip (4) is misaligned; In step five, the second sensing mechanism (8) below the lower drive chain (2) detects the distance of the support part (401) of the lower base (3) through the distance probe (10) to judge whether there is an abnormality in the drive chain (2), the base (3) or the horizontal strip (4); In step six, when the first sensing mechanism (7) or the second sensing mechanism (8) detects an abnormal signal, the corresponding indicator light (11) changes from green to red, and the system gives a prompt; In step seven, after the system detects an abnormal signal in the conveyor belt, the conveyor belt continues to work. When maintenance can be carried out, the maintenance personnel press the maintenance button on the control panel, and the conveyor belt rotates again; In step eight, when the system detects an abnormal signal again through the first sensing mechanism (7) or the second sensing mechanism (8), the conveyor belt stops moving, and the maintenance personnel quickly find the abnormal position of the horizontal strip (4) according to the prompt of the indicator light (11), and perform corresponding maintenance or disassemble and replace the worn or deformed horizontal strip (4).

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