A tension adjustment device for conveyor belt of a marking machine

Abstract

This utility model belongs to the field of conveyor belt tensioning, specifically a tension adjustment device for a line marking machine conveyor belt, including a line marking machine body; a drive motor is fixedly connected to the side wall of the line marking machine body; the output end of the drive motor rotatably engages with a conveyor belt; the conveyor belt is rotatably connected in the middle of the line marking machine body; a pair of linear motors are fixedly connected to the side wall of the line marking machine body; a slide rail is provided in the middle of the linear motor; a rotating shaft is rotatably connected to the side wall of the linear motor; a groove is provided in the side wall of the rotating shaft; the groove is engaged with the middle of the conveyor belt; by synchronously starting the pair of linear motors, the rotating shaft is driven to slide along the slide rail and move towards the bottom of the line marking machine body, and the downward pressure of the rotating shaft on the bottom end of the conveyor belt pulls the conveyor belt, actively tightening the slack conveyor belt, so that the conveyor belt restores normal tension, reducing the problem of slippage caused by excessive tension when the drive motor drives the conveyor belt.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt tensioning, specifically a tension adjustment device for a line marking machine conveyor belt. Background Technology

[0002] A line marking machine is a device used to accurately draw straight lines, curves, scales, or markings on the surface of workpieces such as sheets, pipes, and profiles. It is commonly used in woodworking, metal processing, and building materials production. It can automatically complete the line drawing according to preset parameters, which is more efficient and accurate than manual line drawing, reduces errors, and is suitable for the needs of drawing uniform markings or processing baselines on the surface of workpieces in mass production.

[0003] When the line marking machine is working, the workpiece to be marked is first placed on the conveyor belt, and the conveyor belt transports the workpiece to the positioning area at a preset speed. Then, the positioning mechanism will calibrate and align the workpiece to ensure that the workpiece position is stable and does not deviate. Subsequently, when the workpiece is transported to the marking area, the control system drives the marking execution component to accurately draw lines on the surface of the workpiece according to the preset line parameters. Finally, the workpiece with the marked lines is transported to the discharge end by the conveyor belt.

[0004] After prolonged use, the conveyor belt of a line marking machine may become loose due to tension, causing slippage during operation and resulting in inaccurate conveying. Therefore, a tension adjustment device for the conveyor belt of a line marking machine is proposed to address this problem. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A tension adjustment device for a line marking machine conveyor belt, comprising a line marking machine body; a drive motor fixedly connected to the side wall of the line marking machine body; a conveyor belt rotatably engaged at the output end of the drive motor; the conveyor belt rotatably connected in the middle of the line marking machine body; a pair of linear motors fixedly connected to the side wall of the line marking machine body; the linear motors being positioned in the middle of the line marking machine body; a slide rail being provided in the middle of the linear motors; a rotating shaft rotatably connected to the side wall of the linear motors; a groove being provided in the side wall of the rotating shaft; the groove being engaged with the middle of the conveyor belt; a support plate fixedly connected to the top of the line marking machine body; by synchronously starting the pair of linear motors, the rotating shaft is driven to slide along the slide rail and move towards the bottom of the line marking machine body. The downward pressure exerted by the rotating shaft on the bottom of the conveyor belt pulls the conveyor belt, actively tightening the slack conveyor belt, restoring its normal tension, reducing the problem of slippage caused by excessive tension in the conveyor belt due to the drive motor driving the conveyor belt, ensuring stable engagement and transmission between the drive motor and the conveyor belt, and guaranteeing continuous line marking operations.

[0007] Preferably, a first fixing rod is slidably connected to the top of the marking machine body; a shielding cloth is fixedly connected to the side wall of the first fixing rod; a second fixing rod is fixedly connected to the side wall of the shielding cloth; the second fixing rod is slidably connected to the support plate; the second fixing rod can block the gaps at the four corners of the conveyor belt, forming a protective barrier to isolate pollutants outside the conveyor belt, reducing the intrusion of pollutants into the conveyor belt and their contact with the drive motor and grooves, thus reducing the interference of pollutants on the normal rotation of the conveyor belt after entering the conveyor belt.

[0008] Preferably, a cover plate is fixedly connected to the side wall of the linear motor; a bolt is threadedly connected to the side wall of the cover plate; the bolt is threadedly connected to the side wall of the linear motor; through the threaded sealing design of the cover plate and the bolt, the side of the linear motor can be covered, which can reduce the entry of surrounding objects into the slide rail when the shaft moves, causing the shaft to slide and jam, and further increase the safety protection of the surroundings when the shaft moves.

[0009] Preferably, a support rod is fixedly connected to the inner side wall of the marking machine body; the support rod is located below the conveyor belt; a pair of screws are threaded to the bottom end of the support rod; a fixing plate is rotatably connected to the top end of the screws; a cleaning block is fixedly connected to the top end of the fixing plate; the cleaning block can continuously wipe the surface of the conveyor belt while it is rotating, which can ensure that the surface of the conveyor belt is always clean, provide a flat conveying base for the items to be marked, and reduce the interference of contaminants on the marking.

[0010] Preferably, a water pump is fixedly connected to the inner side of the marking machine body; the water pump is connected to a support rod; multiple sets of nozzles are fixedly connected to the side wall of the support rod; the nozzles are inclined; the spray from the nozzles onto the surface of the conveyor belt can dissolve stubborn pollutants, and in conjunction with the wiping action of the cleaning block, surface residues can be further removed, thus improving the cleaning effect.

[0011] Preferably, a flexible scraper is fixed to the side wall of the fixed plate; the flexible scraper is inclined on the side wall of the fixed plate; by the inclined angle of the flexible scraper to fit the surface of the conveyor belt, and in coordination with the movement of the conveyor belt when it rotates, the hardened contaminants are peeled off from the surface of the conveyor belt, ensuring that there are no residual impurities on the surface of the conveyor belt, and further increasing the cleanliness of the surface of the conveyor belt.

[0012] The advantages of this utility model are:

[0013] 1. The tension adjustment device for the conveyor belt of the line marking machine described in this utility model synchronously starts a pair of linear motors, which drive the rotating shaft to slide along the slide rail and move towards the bottom of the line marking machine body. The rotating shaft uses downward pressure on the bottom of the conveyor belt to pull the conveyor belt, actively tightening the slack conveyor belt, so that the conveyor belt restores normal tension, reduces the problem of slippage caused by excessive tension in the conveyor belt driven by the drive motor, ensures that the drive motor and the conveyor belt are always stably engaged and transmitted, and ensures continuous line marking operation.

[0014] 2. The tension adjustment device for the conveyor belt of the marking machine described in this utility model can block the gaps at the four corners of the conveyor belt through the second fixed rod, forming a protective barrier to isolate pollutants outside the conveyor belt. This reduces the intrusion of pollutants into the conveyor belt and their contact with the drive motor and grooves, thus reducing the interference of pollutants on the normal operation of the conveyor belt after they enter the conveyor belt. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the rotating shaft in this utility model;

[0018] Figure 3 This is a schematic diagram of the cover plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the shielding cloth in this utility model;

[0020] Figure 5 This is a schematic diagram of the flexible scraper in this utility model.

[0021] In the diagram: 1. Marking machine body; 11. Drive motor; 12. Conveyor belt; 13. Linear motor; 14. Slide rail; 15. Rotating shaft; 16. Groove; 17. Support plate; 2. First fixing rod; 21. Covering cloth; 22. Second fixing rod; 3. Cover plate; 31. Bolt; 4. Support rod; 41. Screw; 42. Fixing plate; 43. Cleaning block; 5. Water pump; 51. Nozzle; 6. Flexible scraper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 5As shown in the embodiment of this utility model, a tension adjustment device for a line marking machine conveyor belt includes a line marking machine body 1; a drive motor 11 is fixedly connected to the side wall of the line marking machine body 1; a conveyor belt 12 is rotatably engaged at the output end of the drive motor 11; the conveyor belt 12 is rotatably connected in the middle of the line marking machine body 1; a pair of linear motors 13 are fixedly connected to the side wall of the line marking machine body 1; the linear motors 13 are located in the middle of the line marking machine body 1; a slide rail 14 is provided in the middle of the linear motors 13; the side wall of the linear motors 13 is rotatably connected to... The machine has a rotating shaft 15; a groove 16 is provided on the side wall of the rotating shaft 15; the groove 16 is engaged with the middle part of the conveyor belt 12; a support plate 17 is fixedly connected to the top of the marking machine body 1; during operation, the drive motor 11 is started and then the marking machine body 1 works. The drive motor 11 drives the conveyor belt 12 to rotate for a long time, and the conveyor belt 12 will generate tension. When the marking machine body 1 runs again, the rotation of the conveyor belt 12 and the drive motor 11 will slip. At this time, a pair of linear motors 13 can be started simultaneously, and then the linear motors 13 will drive the rotating shaft 15. 5 slides in the middle of the slide rail 14, and then the rotating shaft 15 moves towards the bottom of the marking machine body 1. The rotating shaft 15 will contact the bottom surface of the conveyor belt 12. The rotating shaft 15 can apply downward pressure to the bottom surface of the conveyor belt 12, so that the tension of the conveyor belt 12 is relaxed and pulled by the rotating shaft 15, which can tighten the tension of the conveyor belt 12. The groove 16 in the middle of the rotating shaft 15 can also contact the teeth on the inner side wall of the conveyor belt 12, so that the rotating shaft 15 and the conveyor belt 12 are in close contact. The drive motor 11 meshes with the teeth on the inner wall of the conveyor belt 12, which can further tighten the tension of the conveyor belt 12. The rotational engagement between the drive motor 11 and the drive motor 11 is tight; by synchronously starting a pair of linear motors 13, the rotating shaft 15 is driven to slide along the slide rail 14 and move towards the bottom of the line marking machine body 1. The downward pressure of the rotating shaft 15 on the bottom end of the conveyor belt 12 pulls the conveyor belt 12, actively tightening the slack conveyor belt 12, so that the conveyor belt 12 returns to normal tension, reducing the problem of slippage caused by excessive tension when the drive motor 11 drives the conveyor belt 12, ensuring that the drive motor 11 and the conveyor belt 12 are always stably meshed and transmitted, ensuring continuous line marking operation.

[0025] like Figure 1 and Figure 4As shown, a first fixing rod 2 is slidably connected to the top of the marking machine body 1; a shielding cloth 21 is fixedly connected to the side wall of the first fixing rod 2; a second fixing rod 22 is fixedly connected to the side wall of the shielding cloth 21; the second fixing rod 22 is slidably connected to the support plate 17; during operation, when the conveyor belt 12 is conveying items, contaminants and other items may enter the interior from the side of the conveyor belt 12. At this time, the first fixing rod 2 can be inserted into the top of the marking machine body 1, and then the second fixing rod 22 can be inserted into the side wall of the support plate 17, which can block the four corners of the conveyor belt 12, so that the items are blocked outside and will not enter the inner wall of the conveyor belt 12; the second fixing rod 22 can block the gaps at the four corners of the conveyor belt 12, forming a protective barrier, isolating contaminants outside the conveyor belt 12, reducing the intrusion of contaminants into the interior of the conveyor belt 12, and reducing contact between contaminants and the drive motor 11 and the groove 16, thus reducing the interference of contaminants with the normal rotation of the conveyor belt 12 after entering the interior of the conveyor belt 12.

[0026] like Figures 2 to 3 As shown, a cover plate 3 is fixedly connected to the side wall of the linear motor 13; a bolt 31 is threadedly connected to the side wall of the cover plate 3; the bolt 31 is threadedly connected to the side wall of the linear motor 13; during operation, when the linear motor 13 drives the rotating shaft 15 to slide in the middle of the slide rail 14, the cover plate 3 can be installed on the side of the linear motor 13, and then multiple sets of bolts 31 can be rotated to seal the side of the linear motor 13, which can prevent contaminants from entering the interior of the slide rail 14, and also make the rotating shaft 15 safe when sliding in the middle of the slide rail 14; through the threaded sealing design of the cover plate 3 and the bolts 31, the side of the linear motor 13 can be covered, which can reduce the entry of surrounding objects into the slide rail 14 when the rotating shaft 15 moves, causing the rotating shaft 15 to slide and jam, and further increase the safety protection of the surroundings when the rotating shaft 15 moves.

[0027] like Figure 5 As shown, a support rod 4 is fixedly connected to the inner wall of the marking machine body 1; the support rod 4 is positioned below the conveyor belt 12; a pair of screws 41 are threadedly connected to the bottom end of the support rod 4; a fixing plate 42 is rotatably connected to the top end of the screws 41; a cleaning block 43 is fixedly connected to the top end of the fixing plate 42; during operation, after prolonged use, the surface of the conveyor belt 12 will accumulate a lot of contaminants. At this time, the pair of screws 41 can be rotated, which will then drive the cleaning block 43 to contact the bottom end of the conveyor belt 12. As the conveyor belt 12 rotates, the cleaning block 43 can continuously clean and wipe the surface of the conveyor belt 12. The distance between the cleaning block 43 and the conveyor belt 12 can also be adjusted by rotating the screws 41; the cleaning block 43 can continuously wipe the surface of the conveyor belt 12 while it is rotating, ensuring that the surface of the conveyor belt 12 remains clean, providing a flat conveying base for the items to be marked, and reducing the interference of contaminants on the marking.

[0028] like Figure 5As shown, a water pump 5 is fixedly connected to the inner side of the line marking machine body 1; the water pump 5 is connected to the support rod 4; multiple sets of nozzles 51 are fixedly connected to the side wall of the support rod 4; the nozzles 51 are inclined; during operation, the water pump 5 can be connected to the cleaning solution, and then the water pump 5 is started. The cleaning solution will be sprayed from the nozzles 51 onto the surface of the conveyor belt 12, and will work with the cleaning block 43 to wipe it; the spray from the nozzles 51 onto the surface of the conveyor belt 12 can dissolve stubborn pollutants, and with the wiping action of the cleaning block 43, the surface residue can be further removed, thus improving the cleaning effect.

[0029] like Figure 5 As shown, a flexible scraper 6 is fixedly attached to the side wall of the fixed plate 42; the flexible scraper 6 is inclined on the side wall of the fixed plate 42; during operation, when the contaminants on the surface of the conveyor belt 12 are stubborn, the flexible scraper 6 can scrape the stubborn stains on the surface of the conveyor belt 12; by the inclined angle of the flexible scraper 6 adhering to the surface of the conveyor belt 12, and cooperating with the movement of the conveyor belt 12 when it rotates, the hardened contaminants are peeled off from the surface of the conveyor belt 12, ensuring that there are no residual impurities on the surface of the conveyor belt 12, and further increasing the cleanliness of the surface of the conveyor belt 12.

[0030] Working principle: After the drive motor 11 is started, the line marking machine body 1 begins to operate. The drive motor 11 continuously drives the conveyor belt 12 to rotate, generating tension. When the line marking machine body 1 resumes operation, slippage occurs between the conveyor belt 12 and the drive motor 11. At this point, a pair of linear motors 13 can be started simultaneously. The linear motors 13 then drive the rotating shaft 15 to slide in the middle of the slide rail 14. The rotating shaft 15 then moves towards the bottom of the line marking machine body 1, contacting the bottom surface of the conveyor belt 12. The rotating shaft 15 applies pressure to the bottom surface of the conveyor belt 12. Pressure causes the tension of the conveyor belt 12 to relax, which is then pulled by the rotating shaft 15, thus tightening the tension of the conveyor belt 12. The groove 16 in the middle of the rotating shaft 15 can also contact the teeth on the inner wall of the conveyor belt 12, making the rotating shaft 15 and the conveyor belt 12 in close contact. The drive motor 11 meshes with the teeth on the inner wall of the conveyor belt 12, which further makes the rotational engagement between the conveyor belt 12 and the drive motor 11 tight. When the conveyor belt 12 is transporting items, contaminants and other items may enter the interior from the side of the conveyor belt 12. At this time, the first fixing rod 2 can be inserted into the top of the marking machine body 1. Then, the second fixing rod 22 is inserted into the side wall of the support plate 17, which can block the four corners of the conveyor belt 12, so that the items are blocked outside and will not enter the inner wall of the conveyor belt 12. When the linear motor 13 drives the rotating shaft 15 to slide in the middle of the slide rail 14, the cover plate 3 can be installed on the side of the linear motor 13. Then, the multiple sets of bolts 31 are rotated to seal the side of the linear motor 13, which can prevent contaminants from entering the interior of the slide rail 14 and also make the rotating shaft 15 safe when sliding in the middle of the slide rail 14. After the conveyor belt 12 has been used for a long time, a lot of dirt will accumulate on its surface. When the contaminant is removed, a pair of screws 41 can be rotated, which will cause the cleaning block 43 to contact the bottom of the conveyor belt 12. As the conveyor belt 12 rotates, the cleaning block 43 can continuously clean and wipe the surface of the conveyor belt 12. The distance between the cleaning block 43 and the conveyor belt 12 can also be adjusted by rotating the screws 41. The water pump 5 can be connected to the cleaning solution, and then the water pump 5 can be started. The cleaning solution will be sprayed from the nozzle 51 onto the surface of the conveyor belt 12 and wiped in conjunction with the cleaning block 43. When the contaminants on the surface of the conveyor belt 12 are stubborn, the flexible scraper 6 can scrape the stubborn stains on the surface of the conveyor belt 12.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A line marking machine conveyor belt tension adjustment device, characterized by: The system includes a line marking machine body (1); a drive motor (11) is fixedly connected to the side wall of the line marking machine body (1); a conveyor belt (12) is rotatably engaged at the output end of the drive motor (11); the conveyor belt (12) is rotatably connected in the middle of the line marking machine body (1); a pair of linear motors (13) are fixedly connected to the side wall of the line marking machine body (1); the linear motors (13) are located in the middle of the line marking machine body (1); a slide rail (14) is provided in the middle of the linear motors (13); a rotating shaft (15) is rotatably connected to the side wall of the linear motors (13); a groove (16) is provided in the side wall of the rotating shaft (15); the groove (16) is engaged with the middle of the conveyor belt (12); and a support plate (17) is fixedly connected to the top of the line marking machine body (1).

2. The tension adjustment device for a line marking machine conveyor belt according to claim 1, characterized in that: The top of the line marking machine body (1) is slidably connected to a first fixing rod (2); a shielding cloth (21) is fixedly connected to the side wall of the first fixing rod (2); a second fixing rod (22) is fixedly connected to the side wall of the shielding cloth (21); the second fixing rod (22) is slidably connected to the support plate (17).

3. The tension adjustment device for a line marking machine conveyor belt according to claim 2, characterized in that: A cover plate (3) is fixed to the side wall of the linear motor (13); a bolt (31) is threaded to the side wall of the cover plate (3); the bolt (31) is threaded to the side wall of the linear motor (13).

4. The tension adjustment device for a line marking machine conveyor belt according to claim 3, characterized in that: A support rod (4) is fixedly connected to the inner wall of the line marking machine body (1); the support rod (4) is located below the conveyor belt (12); a pair of screws (41) are threadedly connected to the bottom end of the support rod (4); a fixing plate (42) is rotatably connected to the top end of the screws (41); a cleaning block (43) is fixedly connected to the top end of the fixing plate (42).

5. The tension adjustment device for a line marking machine conveyor belt according to claim 4, characterized in that: A water pump (5) is fixedly connected to the inner side of the line marking machine body (1); the water pump (5) is connected to the support rod (4); multiple sets of nozzles (51) are fixedly connected to the side wall of the support rod (4); the nozzles (51) are inclined.

6. The tension adjustment device for a line marking machine conveyor belt according to claim 5, characterized in that: A flexible scraper (6) is fixed to the side wall of the fixed plate (42); the flexible scraper (6) is inclined on the side wall of the fixed plate (42).

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