Automatic tarpaulin slitting equipment

Abstract

The utility model relates to the technical field of cloth processing, and discloses tarpaulin automatic slitting equipment which comprises a rack and a limiting supporting mechanism, a feeding device is arranged on the limiting supporting mechanism, a cloth passing roller and a longitudinal slitting mechanism are arranged between the feeding device and the limiting supporting mechanism, and a pressing device matched with the feeding device is arranged at the rear end of the rack. And a transverse cutting tool is arranged on the rack between the pressing device and the feeding device. The cloth feeding device is convenient to operate and capable of effectively improving working efficiency, the limiting supporting mechanism is arranged at the front end of the machine frame, the cloth roller can be effectively prevented from shaking left and right in the rotating process, the cloth passing roller is arranged on the machine frame between the feeding device and the limiting supporting mechanism, cloth can be effectively leveled, and the cloth feeding efficiency is improved. The longitudinal slitting mechanism can longitudinally cut the cloth automatically and accurately, the pressing device arranged on the rear side of the feeding device can fix the cloth, and accurate transverse cutting of the cloth is achieved in cooperation with the transverse cutting tool located between the pressing device and the feeding device.

Description

Technical Field

[0001] This utility model relates to the field of fabric processing technology, specifically to an automatic tarpaulin cutting device. Background Technology

[0002] In the tarpaulin manufacturing industry, the cutting process plays a crucial role. However, most tarpaulin cutting work still relies primarily on manual labor. This traditional method not only demands a high level of labor, requiring multiple workers to work together, thus increasing labor costs and limiting production efficiency, but also suffers from inconsistent cutting precision and quality due to the inconsistency inherent in manual operation, resulting in low product consistency and a low pass rate.

[0003] Furthermore, traditional cutting methods cannot be operated by a single person and require multiple people to work together, which further limits production flexibility and efficiency. Existing tarpaulin slitting equipment on the market has relatively limited functionality, especially in longitudinal slitting. The cutting angle of existing equipment cannot be uniformly adjusted, resulting in inconsistent cutting effects and affecting product quality. Therefore, blade adjustment still requires manual operation, failing to achieve automation and efficiency. At the same time, the blades for transverse cutting are usually fully exposed, posing a significant safety hazard to workers during the cutting process. Additionally, after transverse cutting, fabric easily gets stuck at the opening, causing accumulation and affecting subsequent cutting and installation efficiency.

[0004] Given the above shortcomings, there is an urgent need for an automated slitting device that can improve cutting accuracy, reduce labor, and enhance safety and production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tarpaulin cutting device that is simple to operate and highly efficient in addressing the above problems.

[0006] To achieve the above objectives, this utility model discloses an automatic tarpaulin slitting device, including a frame. Its structural features include a limiting support mechanism at the front end of the frame, a feeding device cooperating with the limiting support mechanism on the rear support of the limiting support mechanism, a fabric roller and a longitudinal slitting mechanism on the frame located between the feeding device and the limiting support mechanism, a pressing device cooperating with the feeding device at the rear end of the frame, and a transverse cutting blade on the frame between the pressing device and the feeding device.

[0007] With the above structure, a limiting support mechanism at the front of the frame enables precise positioning and conveying of the fabric roller, effectively preventing lateral swaying during rotation and ensuring fabric stability during conveying. Furthermore, a fabric roller mounted on the frame between the feeding device and the limiting support mechanism effectively flattens the fabric, providing a good foundation for subsequent longitudinal slitting and facilitating precise longitudinal cutting. A pressing device located behind the feeding device secures the fabric, working in conjunction with the transverse cutting blade to achieve precise transverse cutting.

[0008] Preferably, the frame is a shell structure composed of multiple sets of fixed beams and baffles, including an extension frame for mounting a limiting support mechanism and a main frame for mounting other devices. The extension frame is horizontally positioned at the lower front end of the main frame. The limiting support mechanism includes two fabric placement rollers spaced apart on the frame along its longitudinal direction. Two limiting baffles sliding along the length of the fabric placement rollers are provided on the support. A servo motor for driving the feeding device and the fabric placement rollers is installed inside the main frame. By setting the frame as a shell structure, the overall structure is stable and less prone to shaking. The two limiting baffles sliding along the length of the fabric placement rollers on the support allow for flexible adjustment according to different fabric specifications, improving the adaptability of the equipment. The servo motor inside the main frame drives the rotation of the feeding device and the fabric placement rollers, ensuring precise control and efficient operation of the cutting process.

[0009] Preferably, the feeding device includes two support seats vertically arranged on the left and right sides of the upper part of the bracket. A feeding roller and a pressing roller are vertically arranged between the two support seats. The feeding roller is located below the pressing roller, and a first control cylinder is provided at the upper end of the support seat to control the vertical movement of the pressing roller. A toothed sprocket that cooperates with a servo motor is provided on the feeding roller. By providing a first control cylinder at the upper end of the support seat, the vertical movement of the pressing roller can be precisely controlled, thereby achieving the pressing and releasing of the fabric, ensuring the stability of the cutting process, and adapting to fabrics of different thicknesses and materials. It has strong versatility and adaptability. The toothed sprocket on the feeding roller that cooperates with the servo motor achieves effective power transmission, ensuring the synchronization and efficiency of fabric conveying and cutting. At the same time, the precise pressing and conveying mechanism ensures the flatness and consistency of the fabric during the cutting process.

[0010] Preferably, a fabric guide roller is provided at the upper end of the main frame near the front side, which is arranged along the left and right direction of the main frame. The horizontal height of the fabric guide roller is adapted to the horizontal height of the fabric feeding roller and is parallel to the fabric placement roller. A displacement sensor that cooperates with the servo motor is provided on the frame below the fabric guide roller. The fabric guide roller can facilitate the flattening of the fabric, and the displacement sensor can facilitate the detection of the remaining fabric to prevent the conveying equipment from running idle.

[0011] Preferably, the longitudinal slitting mechanism includes a guide housing mounted on a frame between the fabric roller and the feeding device. Inside the guide housing, near the left and right sides, are two second control cylinders, each vertically aligned with a drive rod extending beyond the upper surface of the guide housing. The upper ends of the drive rods of the two second control cylinders are equipped with slitting cutters. Each slitting cutter includes an L-shaped mounting bracket mounted on the upper end of the drive rod, and two L-shaped mounting brackets are equipped with cutter positioning shafts. Multiple sets of adjustable cutters are spaced apart along the length of the shaft on the cutter positioning shafts. The horizontal upper surface of the guide housing facilitates further flattening of the fabric, and the second control cylinders, in conjunction with the cutter positioning shafts, can simultaneously control the raising and lowering of multiple sets of adjustable cutters.

[0012] Preferably, the adjustable cutter includes a cutter body positioning part, a blade positioning part, and a blade body that slides on the blade positioning part and extends beyond its lower end. The cutter body positioning part is a fixed sleeve with an inner diameter matching the cutter positioning shaft, and a positioning bolt extending into the fixed sleeve is screwed onto the outer wall of the fixed sleeve. The cutter positioning shaft is provided with a positioning groove that matches the positioning bolt, and the positioning groove is arranged along the length direction of the cutter positioning shaft. By cooperating with the positioning bolt and the positioning groove, the tilt angle of each set of adjustable cutters can be ensured to be consistent, effectively saving the adjustment time of the operator.

[0013] Preferably, the blade positioning part is fixedly installed on the rear side wall of the blade body positioning part and is inclined downwards and backwards. The blade positioning part consists of a left blade holder piece and a right blade holder piece with the same shape and fitted together. The connection between the upper end of the two blade holder pieces and the blade body positioning part is an arc-shaped notch structure that adapts to the curvature of the outer wall of the fixed sleeve, and the lower end surface of the two blade holder pieces is flush with the working plane where the fabric is fed. The inclined blade positioning part is fixedly installed to facilitate observation and adjustment by the operator, and also makes it easier to align with the working plane where the fabric is fed.

[0014] Preferably, the transverse cutting tool includes an anti-snagging housing mounted on the support along the left-right direction. The upper surface of the anti-snagging housing has a strip-shaped slit extending along its length. The horizontal plane of the plate in front of the strip-shaped slit is higher than the horizontal plane of the plate behind the strip-shaped slit. A cutting blade that slides along the strip-shaped slit is mounted on the frame below the anti-snagging housing. The higher horizontal plane in front of the strip-shaped slit helps guide the fabric smoothly through, reducing resistance and the risk of jamming. The sliding of the cutting blade along the strip-shaped slit enables continuous and uniform cutting, improving cutting quality and efficiency.

[0015] Preferably, the pressing device includes a third control cylinder disposed at the rear end of the anti-slip fabric housing and near the left and right inner walls. The third control cylinder is arranged vertically, and its drive rod extends out of the upper end face of the anti-slip fabric housing. Pressing rods with lengths adapted to the length of the anti-slip fabric housing are provided on the two drive rods. By providing pressing rods with lengths adapted to the length of the anti-slip fabric housing on the two drive rods, it can accommodate fabrics of different widths, exhibiting strong versatility and adaptability. This pressing device design can reduce slippage and displacement of the fabric during the cutting process.

[0016] Preferably, the cutting blade includes a slide rail horizontally mounted on a frame, a slider mounted on the slide rail, and a cutting blade holder mounted on the slider. The upper part of the cutting blade holder has a brushless electric scissor extending out to form a strip-shaped cutting kerf front baffle, and the middle part of the cutting blade holder is fixed to the slider. A drive device is mounted on the frame below the cutting blade holder to drive the cutting blade holder to slide along the slide rail. The cooperation between the slide rail and the slider ensures that the cutting blade holder can slide stably along the slide rail, improving cutting stability and precision. The brushless electric scissor design reduces the potential harm to the operator caused by traditional blades during cutting, improving operational safety. Simultaneously, the brushless electric scissor extending out to form a strip-shaped cutting kerf front baffle ensures accurate cutting positioning.

[0017] In summary, the beneficial effects of this utility model are as follows: This utility model is easy to operate and effectively improves work efficiency. By setting a limiting support mechanism at the front end of the frame, precise positioning and conveying of the fabric roller can be achieved, effectively preventing the fabric roller from swaying left and right during rotation, thus ensuring the stability of the fabric during conveying. Furthermore, the fabric roller installed on the frame between the feeding device and the limiting support mechanism can effectively flatten the fabric, providing a good foundation for subsequent automatic longitudinal slitting, facilitating the longitudinal slitting mechanism to automatically and accurately cut the fabric longitudinally. The pressing device located behind the feeding device can fix the fabric, and together with the transverse cutting blade located therein, achieves precise transverse cutting of the fabric. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation position of the cutting blade holder of this utility model;

[0021] Figure 4 for Figure 3 Enlarged structural diagram of the upper A-section cutting blade;

[0022] Figure 5 This is a schematic diagram of the mounting position structure of the servo motor of this utility model;

[0023] Figure 6 This is a schematic diagram of the adjustable cutting tool of this utility model.

[0024] In the diagram: 1. Frame; 2. Limiting support mechanism; 3. Feeding device; 4. Fabric guide roller; 5. Longitudinal slitting mechanism; 6. Pressing device; 7. Transverse cutting tool; 8. Main frame; 9. Extension frame; 10. Fabric placement roller; 11. Limiting baffle; 12. Servo motor; 13. Support base; 14. Feeding roller; 15. Pressing roller; 16. First control cylinder; 17. Displacement sensor; 18. Guide housing; 19. Second control cylinder; 20. Slitting tool; 21. L-shaped 22. Mounting bracket; 23. Cutter positioning shaft; 24. Adjustable cutter; 25. Blade positioning part; 26. Blade body; 27. Positioning bolt; 28. Positioning groove; 29. ​​Anti-jamming housing; 30. Strip-shaped cut; 31. Cutting blade body; 32. Third control cylinder; 33. Pressure bar; 34. Slide rail; 35. Cutting blade holder; 36. Brushless electric shears; 37. Drive unit; 38. Drive motor; 39. Tensioner wheel; 40. Synchronous belt; 41. Positioning plate. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0029] like Figure 1 , Figure 2 as well as Figure 5 As shown, this utility model includes a frame 1, a limiting support mechanism 2 set at the front end of the frame 1, and a feeding device 3 that cooperates with the limiting support mechanism 2 on the rear support of the limiting support mechanism 2. In the design, the frame 1 is a shell structure composed of multiple sets of fixed beams and baffles and includes an extension frame 9 for installing the limiting support mechanism 2 and a main frame 8 for installing other devices. The extension frame 9 is set at the lower part of the front end of the main frame 8 in a horizontal direction. The limiting support mechanism 2 includes two fabric placement rollers 10 that are spaced apart on the frame 1 in the front-rear direction. Two limiting baffles 11 that slide along the length direction of the fabric placement rollers 10 are set on the support. Usually, the limiting baffles 11 are also provided with fixing bolts to limit the sliding of the limiting baffles 11. Of course, the sliding and locking structure and installation method of the limiting baffles 11 are known structures and will not be described in detail here. During manufacturing, a servo motor 12 is installed inside the main frame 8 to drive the feeding device 3 and the fabric placement roller 10 to rotate. The servo motor 12 is usually fixed to the inner wall on the left side of the main frame 8 through a motor mounting bracket. The feeding device 3 and the fabric placement roller 10 are driven to rotate through the transmission chain, which can ensure precise control and efficient operation of the cutting process. By setting the frame 1 as a shell structure, the overall structure can be made stable and not easy to shake. At the same time, two limit baffles 11 that slide along the length of the fabric placement roller 10 are set on the bracket, which can be flexibly adjusted according to different specifications of fabric, improving the adaptability of the equipment.

[0030] like Figure 1 and Figure 2As shown, in a preferred embodiment of this utility model, the feeding device 3 includes two support seats 13 respectively arranged vertically on the left and right sides of the upper part of the bracket. A feeding roller 14 and a pressing roller 15 are arranged vertically between the two support seats 13. The feeding roller 14 is located below the pressing roller 15. A first control cylinder 16 is provided at the upper end of the support seat 13 to control the pressing roller 15 to move up and down vertically. At the same time, a toothed sprocket that cooperates with the servo motor 12 is provided on the feeding roller 14. In the design, the support seat 13 is a rectangular frame structure that is vertically fixed to the upper end face of the main frame 8, while the feeding roller 14 is installed horizontally at the lower part of the two support seats 13 through bearing seats. The pressure roller 15, located on the upper side of the feed roller 14, has shafts at both ends connected to the drive rod of the first control cylinder 16 via bearing seats. By setting the first control cylinder 16 at the upper end of the support base 13, the up and down movement of the pressure roller 15 can be precisely controlled, thereby achieving the pressing and releasing of the fabric, ensuring the stability of the cutting process, and adapting to fabrics of different thicknesses and materials. It has strong versatility and adaptability. The feed roller 14 is equipped with a toothed sprocket that cooperates with the servo motor 12, realizing the effective transmission of power, ensuring the synchronization and efficiency of fabric conveying and cutting. At the same time, the precise pressing and conveying mechanism ensures the flatness and consistency of the fabric during the cutting process.

[0031] like Figure 1 and Figure 2 as well as Figure 3 As shown, in another preferred embodiment of this utility model, a feed roller 4 and a longitudinal cutting mechanism 5 are provided on the frame 1 located between the feeding device 3 and the limiting support mechanism 2. In the design, a feed roller 4 is provided at the upper end of the main frame 8 near the front side, which is arranged in the left-right direction of the main frame 8. The horizontal height of the feed roller 4 is adapted to the horizontal height of the feeding roller 14 and is parallel to the fabric placement roller 10. In this way, the feed roller 4 can be used to easily flatten the fabric. A displacement sensor 17 is provided on the frame 1 below the feed roller 4, which cooperates with the servo motor 12. The displacement sensor 17 can be used to easily detect the remaining fabric, thereby preventing the conveying equipment from running idle. The displacement sensor 17 is a known structure and will not be described in detail here.

[0032] like Figure 1 and Figure 2 as well as Figure 3As shown, in a preferred embodiment of the present invention, the longitudinal slitting mechanism 5 includes a guide housing 18 disposed on a frame 1 between the fabric roller 4 and the feeding device 3. Second control cylinders 19, arranged vertically with their drive rods extending beyond the upper surface of the guide housing 18, are respectively disposed near the left and right sides of the guide housing 18. Slitting cutters 20 are also disposed at the upper ends of the drive rods of the two second control cylinders 19. In the design, the slitting cutter 20 includes an L-shaped mounting bracket 21 disposed on the upper end of the drive rod, and a cutter positioning shaft 22 is disposed on the two L-shaped mounting brackets 21. Multiple sets of adjustable cutters 23 are spaced apart along the length of the shaft on the cutter positioning shaft 22. Simultaneously, the guide housing 18 located behind the adjustable cutters 23... The guide housing 18 is designed with a strip-shaped opening that cooperates with the adjustable cutter 23. The guide housing 18 is a rectangular housing structure composed of multiple strip baffles, and the length of the rectangular housing is equal to the distance between the left and right side plates of the frame 1. The width of the rectangular housing is adapted to the distance between the fabric roller 4 and the feeding device 3, and the height of the rectangular housing is adapted to the height of the fabric roller 4. The length of the strip-shaped opening is adapted to the length of the guide housing 18. The horizontal top surface of the guide housing 18 facilitates further flattening of the fabric. The second control cylinder 19 cooperates with the cutter positioning shaft 22 to simultaneously control the lifting and lowering of multiple sets of adjustable cutters 23. At the same time, the strip-shaped opening is designed to prevent interference between the multiple sets of adjustable cutters 23 and the guide housing 18 when they are lifting and lowering.

[0033] like Figure 1 and Figure 2 as well as Figure 6As shown, in another preferred embodiment of the present invention, the adjustable cutter 23 includes a cutter body positioning part 24, a blade positioning part 25, and a blade body 26 that slides on the blade positioning part 25 and extends out of the lower end of the blade positioning part 25. The cutter body positioning part 24 is a fixed sleeve with an inner diameter matching the cutter positioning shaft 22. A positioning bolt 27 extending into the fixed sleeve is screwed onto the outer wall of the fixed sleeve. Simultaneously, a positioning groove 28 matching the positioning bolt 27 is provided on the cutter positioning shaft 22. In design, the positioning groove 28 is arranged along the length direction of the cutter positioning shaft 22. The blade positioning part 25 is fixedly installed on the rear side wall of the cutter body positioning part 24 and is inclined downwards and backwards. The blade positioning part 25 consists of a left blade holder and a right blade holder with the same shape and fitted together. The upper end of the two blade holders is connected to the blade body positioning part 24 with an arc-shaped notch structure that adapts to the curvature of the outer wall of the fixed sleeve. The lower end face of the two blade holders is flush with the working plane where the fabric is fed. In the actual manufacturing process, since the fixed sleeve is annular and the blade positioning part 25 is fixed at an angle on the outer wall of the fixed sleeve, in order to ensure the consistency of the tilt angle of each adjustable blade 23 and to facilitate the cutting of the fabric, usually, when ensuring that the blade body positioning part 24 and the blade positioning part 25 are consistent, the vertical plane where the center axis of the positioning bolt 27 is located is perpendicular to the horizontal plane where the lower edge of the blade holder is located, and the welding work can be carried out. During manufacturing, the two blade holders are riveted together to secure them. A slot for mounting a blade is provided on the inner wall of one of the blade holders, with the lower end of the slot penetrating the lower end face of the blade holder. The blade body 26 is inserted between the two blade holders through the slot. A recessed groove for fixing the blade is provided in the middle of the blade positioning part 25 along its length. A strip-shaped opening penetrating the blade positioning part 25 is provided within this recessed groove. A fixing bolt passing through the blade body 26 and the strip-shaped opening is provided at the recessed groove, and a fixing nut is provided on the fixing bolt for fixing the blade body 26. Thus, the blade body 26 can be adjusted by pushing the fixing bolt. 6. The length of the lower end of the blade holder can be extended and fixed by a fixing nut. Of course, during use, the operator can determine the number of adjustable blades 23 installed on the cutter positioning shaft 22 and the spacing between them according to the required width of the fabric. By adjusting the positioning bolts 27, the positioning bolts 27 on each set of adjustable blades 23 can be engaged in the positioning grooves 28, thereby ensuring that the tilt angle of each set of adjustable blades 23 is consistent, effectively saving the operator's adjustment time. The operator can also adjust the tilt angle of the adjustable blades 23 by controlling the up and down of the cutter positioning shaft 22 through the second control cylinder 19, thereby controlling whether the adjustable blades 23 perform cutting work.

[0034] like Figure 1 , Figure 3 as well as Figure 4As shown, a pressing device 6 that cooperates with the feeding device 3 is provided at the rear end of the frame 1, and a transverse cutting tool 7 is provided on the frame 1 between the pressing device 6 and the feeding device 3. In the design, the transverse cutting tool 7 includes an anti-snagging cloth housing 29 installed on the support along the left and right direction of the support. The upper end face of the anti-snagging cloth housing 29 is provided with a strip-shaped cut 30 arranged along the length direction of the anti-snagging cloth housing 29. The height of the horizontal plane of the plate on the front side of the strip-shaped cut 30 is higher than the height of the horizontal plane of the plate on the rear side of the strip-shaped cut 30. A cutting blade body 31 that slides along the strip-shaped cut 30 is also provided on the frame 1 below the anti-snagging cloth housing 29. In the design, the anti-clogging housing 29 is a rectangular box structure composed of multiple baffles, and the rectangular box is set along the left and right direction of the frame 1 and perpendicular to the fabric feeding direction. The aforementioned strip-shaped cut 30 is set along the length of the anti-clogging housing 29 at the middle position of the top plate of the anti-clogging housing 29. The baffle located in front of the strip-shaped cut 30 is higher than the baffle behind the strip-shaped cut 30, and the two baffles form a platform-like structure. In this way, the horizontal plane of the plate in front of the strip-shaped cut 30 is higher than that of the rear side. This design helps to guide the fabric to pass smoothly and reduce resistance and the risk of fabric jamming.

[0035] like Figure 1 - Figure 3 As shown, the aforementioned pressing device 6 includes a third control cylinder 32 located at the rear end of the anti-slip fabric housing 29 and near the left and right inner walls. The third control cylinder 32 is arranged vertically, and its drive rod extends out of the upper end face of the anti-slip fabric housing 29. Pressing rods 33 with a length adapted to the length of the anti-slip fabric housing 29 are provided on the two drive rods. In the initial state of the third control cylinders 32, the pressing rods 33 between the two third control cylinders 32 are set close to the top surface of the anti-slip fabric housing 29 behind the strip-shaped cut 30. The pressing rods 33 typically use a rectangular tube structure, which increases the contact area between the pressing rods 33 and the fabric when pressing down, thereby improving the stability of the fabric during cutting. Moreover, by providing pressing rods 33 with a length adapted to the length of the anti-slip fabric housing 29 on the two drive rods, it can adapt to fabrics of different widths, and has strong versatility and adaptability. The design of this pressing device 6 can also reduce the slippage and displacement of the fabric during the cutting process.

[0036] like Figure 3 and Figure 4As shown, the cutting blade body 31 includes a slide rail 34 horizontally mounted on the frame 1 below the anti-jamming housing 29. A slider is mounted on the slide rail 34, and a cutting blade holder 35 is mounted on the slider. The length of the slide rail 34 is adapted to the length of the strip-shaped cut 30. A brushless electric scissor 36 extending from the front baffle of the strip-shaped cut 30 is mounted on the upper part of the cutting blade holder 35. The middle part of the cutting blade holder 35 is fixed to the outer end face of the slider by bolts. At the same time, a drive device 37 is also mounted on the frame 1 below the cutting blade holder 35 to drive the cutting blade holder 35 to slide along the slide rail 34. Through the cooperation of the slide rail 34 and the slider, the cutting blade holder 35 can be stably slid along the slide rail 34, improving the stability and accuracy of cutting. The design of the brushless electric scissor 36 reduces the possible harm to the human body caused by traditional knives during cutting, improving operational safety. At the same time, the brushless electric scissor 36 extending from the front baffle of the strip-shaped cut 30 ensures the accuracy of the cutting position. During manufacturing, the aforementioned brushless electric scissors 36 are of a known structure, typically using the Bestwin brand ACWS-109 electric scissors. To prevent the portion of the brushless electric scissors 36 extending into the strip-shaped cut 30 from posing a safety hazard to workers, an L-shaped limiting plate extending into the strip-shaped cut 30 and cooperating with the brushless electric scissors 36 can be installed at the upper end of the cutting blade holder 35. The lower part of the vertical plate of the L-shaped limiting plate is fixed to the cutting blade holder 35, while the horizontal plate is located directly above the upper blade of the brushless electric scissors 36 and is set against the upper blade. This design, with the horizontal plate slightly higher than the front baffle of the strip-shaped cut 30, effectively prevents injury to workers and allows the upper end of the brushless electric scissors to complete the cutting work along the strip-shaped cut 30. Furthermore, by sliding the cutting blade 31 along the strip-shaped cut 30, continuous and uniform cutting can be achieved, improving cutting quality and efficiency.

[0037] like Figure 2 and Figure 3 As shown, the aforementioned drive device 37 includes a drive motor 38 located at the left end of the frame 1 and a tensioning wheel 39 located at the right end of the frame 1 corresponding to the drive motor 38. A synchronous belt 40 is provided between the drive shaft of the drive motor 38 and the tensioning wheel 39 to connect the two. In the design, a positioning plate 41 is provided at the lower part of the cutting blade holder 35, perpendicular to the cutting blade holder 35 and connected to the synchronous belt 40. A synchronous pulley that cooperates with the synchronous belt 40 is provided on the drive rod of the drive motor 38. The synchronous pulley realizes the transmission of power and the control of movement by meshing with the synchronous belt 40. The synchronous pulley is usually composed of two parts: a pulley and a synchronous belt 40. The pulley has a groove that matches the tooth shape on the synchronous belt 40. The transmission of power and the control of movement are realized by the meshing of the teeth and the groove. The positioning plate 41 is fixed to the synchronous belt 40 by bolts or clamps, thereby realizing the sliding of the cutting blade 31 along the strip cut 30, which can achieve continuous and uniform cutting.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic tarpaulin cutting device, comprising a frame (1), characterized in that: The frame (1) is provided with a limiting support mechanism (2) at the front end. The supporting bracket of the limiting support mechanism (2) is provided with a feeding device (3) that cooperates with the limiting support mechanism (2). The frame (1) located between the feeding device (3) and the limiting support mechanism (2) is provided with a cloth roller (4) and a longitudinal cutting mechanism (5). The frame (1) is provided with a pressing device (6) that cooperates with the feeding device (3) at the rear end. The frame (1) between the pressing device (6) and the feeding device (3) is provided with a transverse cutting tool (7).

2. The automatic tarpaulin cutting device as described in claim 1, characterized in that: The frame (1) is a shell structure composed of multiple fixed beams and baffles and includes an extension frame (9) for installing a limiting support mechanism (2) and a main frame (8) for installing other devices. The extension frame (9) is arranged horizontally at the lower part of the front end of the main frame (8). The limiting support mechanism (2) includes two fabric placement rollers (10) spaced apart on the frame (1) along the front-back direction. The support is provided with two limiting baffles (11) that slide along the length direction of the fabric placement rollers (10). The main frame (8) is provided with a servo motor (12) that drives the feeding device (3) and the fabric placement rollers (10) to rotate.

3. The automatic tarpaulin cutting device as described in claim 1, characterized in that: The feeding device (3) includes two support seats (13) respectively arranged on the left and right sides of the upper part of the support in the vertical direction. A feeding roller (14) and a pressing roller (15) are arranged between the two support seats (13) in the vertical direction. The feeding roller (14) is located below the pressing roller (15), and a first control cylinder (16) is provided at the upper end of the support seat (13) to control the pressing roller (15) to move up and down in the vertical direction. A toothed sprocket that cooperates with the servo motor (12) is provided on the feeding roller (14).

4. The automatic tarpaulin cutting device as described in claim 2, characterized in that: The upper end of the main frame (8) near the front side is provided with a fabric feed roller (4) arranged in the left and right direction of the main frame (8). The horizontal height of the fabric feed roller (4) is adapted to the horizontal height of the fabric feeding roller (14) and parallel to the fabric placement roller (10). A displacement sensor (17) cooperating with the servo motor (12) is provided on the frame (1) below the fabric feed roller (4).

5. The automatic tarpaulin cutting device as described in claim 1, characterized in that: The longitudinal slitting mechanism (5) includes a guide housing (18) set on the frame (1) between the cloth roller (4) and the feeding device (3). The guide housing (18) has a second control cylinder (19) set at the position near the left and right sides, which is arranged vertically and whose drive rod extends out of the upper end face of the guide housing (18). The upper end of the drive rod of the two second control cylinders (19) is provided with a slitting cutter (20). The slitting cutter (20) includes an L-shaped mounting bracket (21) set at the upper end of the drive rod and a cutter positioning shaft (22) set on the two L-shaped mounting brackets (21). The cutter positioning shaft (22) is provided with multiple sets of adjustable cutters (23) spaced apart along the length direction of the shaft.

6. The automatic tarpaulin cutting device as described in claim 5, characterized in that: The adjustable cutter (23) includes a cutter body positioning part (24) and a blade positioning part (25) and a blade body (26) that slides on the blade positioning part (25) and extends out of the lower end of the blade positioning part (25). The cutter body positioning part (24) is a fixed sleeve with an inner diameter that matches the cutter positioning shaft (22) and a positioning bolt (27) extending into the fixed sleeve is screwed on the outer wall of the fixed sleeve. The cutter positioning shaft (22) is provided with a positioning groove (28) that matches the positioning bolt (27) and the positioning groove (28) is provided along the length direction of the cutter positioning shaft (22).

7. The automatic tarpaulin cutting device as described in claim 6, characterized in that: The blade positioning part (25) is fixedly installed on the rear side wall of the blade body positioning part (24) and is inclined to the rear and downward. The blade positioning part (25) is a left blade holder piece and a right blade holder piece structure with the same shape and fitted together. The upper end of the two blade holder pieces is connected to the blade body positioning part (24) with an arc-shaped notch structure that adapts to the curvature of the outer wall of the fixed sleeve. The lower end face of the two blade holder pieces is flush with the working plane where the cloth is fed.

8. The automatic tarpaulin cutting device as described in claim 1, characterized in that: The transverse cutting tool (7) includes an anti-clogging housing (29) mounted on the support in the left-right direction. The upper end face of the anti-clogging housing (29) is provided with a strip-shaped cut (30) arranged along the length direction of the anti-clogging housing (29). The height of the horizontal plane of the plate on the front side of the strip-shaped cut (30) is higher than the height of the horizontal plane of the plate on the rear side of the strip-shaped cut (30). A cutting blade (31) that slides along the strip-shaped cut (30) is provided on the frame (1) below the anti-clogging housing (29).

9. The automatic tarpaulin cutting device as described in claim 1, characterized in that: The pressing device (6) includes a third control cylinder (32) located at the rear end of the anti-clogging housing (29) and close to the left and right inner walls. The third control cylinder (32) is arranged in a vertical direction and the drive rod extends out of the upper end face of the anti-clogging housing (29). The two drive rods are provided with pressing rods (33) with a length adapted to the length of the anti-clogging housing (29).

10. The automatic tarpaulin cutting device as described in claim 8, characterized in that: The cutting blade body (31) includes a slide rail (34) arranged horizontally on the frame (1), a slider is provided on the slide rail (34) and a cutting blade holder (35) is provided on the slider. A brushless electric scissor (36) extending out of the front baffle of the strip-shaped cut (30) is provided on the upper part of the cutting blade holder (35) and the middle part of the cutting blade holder (35) is fixed on the slider. A driving device (37) for driving the cutting blade holder (35) to slide along the slide rail (34) is provided on the frame (1) below the cutting blade holder (35).

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