Woven bag special-shaped shearing and punching combined device

Abstract

The utility model relates to the technical field of shearing and punching and discloses a woven bag special-shaped shearing and punching combined device, including two support plates, two support plates are left and right correspondence setting, be provided with shearing and punching combined assembly on two support plates, shearing and punching combined assembly includes concave frame, concave frame fixed connection is at two support plates'surface, pay-off roll uniform speed feed, second conveying mechanism is responsible for conveying raw material to shearing station, after shearing, by first conveying mechanism is transferred to punching station, realizes once feeding, continuous processing, shearing and punching integration, solves the process dispersion, the low production efficiency problem that traditional two independent equipment respectively process results in thoroughly, simultaneously, the accurate location of spacing roller, fixed pressing plate, the burr -free shearing of sawtooth blade, the orifice heat sealing treatment of annular hot melt silk, all ensured the precision and quality of woven bag special-shaped processing, promoted overall production efficiency and product qualification rate.

Description

Technical Field

[0001] The utility model relates to the technical field of shearing and punching, in particular to a combined special-shaped shearing and punching device for woven bags. Background Art

[0002] Woven bags (such as chemical fertilizer bags, building material packaging bags, and storage bags) often require special-shaped shearing (such as trapezoidal and arc-shaped cuts) and punching (such as hanging holes and ventilation holes) during production to meet the requirements of subsequent use and assembly. Such processing has high requirements on process continuity and precision: the shearing must be burr-free, the fiber at the hole opening must not be loose after punching, and the relative position deviation between shearing and punching must be controlled within a very small range. However, at present, most of the existing processing methods in the industry adopt a step-by-step processing mode with independent equipment: the special-shaped shearing is first completed by a special shearing machine, and then the sheared woven bag is manually transferred to a punching machine for punching. This mode does not design a continuous cooperative structure of unrolling, conveying, shearing and finally punching according to the processing characteristics of woven bags. The equipment has single function and lacks linkage control. Manual intervention is required for unrolling and feeding, transfer between processes and secondary positioning. There is neither a unified conveying limit mechanism to ensure the smooth movement of materials, nor an integrated processing unit to complete two processes through one-time feeding, thereby reducing the processing efficiency. Contents of the Utility Model

[0003] (I) Technical Problems to be Solved In view of the deficiencies of the prior art, the utility model provides a combined special-shaped shearing and punching device for woven bags, which solves the problem that at present, most existing processing methods in the industry adopt a step-by-step processing mode with independent equipment: the special-shaped shearing is first completed by a special shearing machine, and then the sheared woven bag is manually transferred to a punching machine for punching. This mode does not design a continuous cooperative structure of unrolling-conveying-shearing-punching according to the processing characteristics of woven bags. The equipment has single function and lacks linkage control. Manual intervention is required for unrolling and feeding, transfer between processes and secondary positioning. There is neither a unified conveying limit mechanism to ensure the smooth movement of materials, nor an integrated processing unit to complete two processes through one-time feeding, thereby reducing the processing efficiency.

[0004] (II) Technical Solution To achieve the above objective, the utility model provides the following technical solution: a combined special-shaped shearing and punching device for woven bags, comprising two support plates, the two support plates are arranged correspondingly left and right, a combined shearing and punching assembly is arranged on the two support plates, the combined shearing and punching assembly comprises a concave frame, the concave frame is fixedly connected to the rear surfaces of the two support plates, and the left and right inner walls of the concave part of the concave frame are rotatably connected with fixed mounting rods; wherein, opposite surfaces of the two fixed mounting rods are fixedly provided with fixing flanges, and an unrolling roller is fixedly installed on the opposite surfaces of the two fixed mounting rods through the fixing flanges; Among them, the left end of the fixed mounting rod on the left side rotates through the left side of the concave frame, and a servo motor is fixedly installed on the left side of the concave frame. The output end of the servo motor is fixedly connected to the left end of the fixed mounting rod on the left side. Among them, two inclined mounting plates are fixedly connected to the front surface of the concave frame, and auxiliary rods are rotatably connected to the opposite surfaces of the two inclined mounting plates; The two support plates are fixedly mounted with a second conveying mechanism on their opposite sides, and the second conveying mechanism is located on the front side of the concave frame.

[0005] Preferably, a first cylinder is fixedly installed on both the left and right sides of the two support plates, a lifting plate is fixedly connected to the telescopic ends of the two first cylinders, an mounting plate is fixedly connected to the lower surface of the lifting plate, and a concave plate is fixedly connected to the lower surface of the mounting plate. The concave plate and the second conveying mechanism are arranged vertically and vertically. Multiple limiting rollers are rotatably connected to the concave part of the concave plate, and the multiple limiting rollers are used to limit the upper surface of the woven bag.

[0006] Preferably, a concave support plate is fixedly installed on the opposite surfaces of the two support plates. The concave support plate is located in front of the second conveying mechanism. A placement plate is fixedly connected to the left and right inner walls of the concave support plate. The upper surface of the placement plate is parallel to the upper surface of the first conveying mechanism. The upper surface of the placement plate has a cutting groove.

[0007] Preferably, L-shaped fixing plates are fixedly connected to both the left and right sides of the concave support plate, and a second cylinder is fixedly installed on the upper surface of the two L-shaped fixing plates. A lifting plate is fixedly connected to the telescopic ends of the two second cylinders. The lower surface of the lifting plate is fixedly connected to a tool mounting plate, and the lower surface of the tool mounting plate is fixedly installed with a serrated blade. The serrated blade and the cutting groove are arranged vertically in correspondence.

[0008] Preferably, a rectangular sleeve is fixedly connected to the opposite surfaces of the two L-shaped fixing plates, and the lower end of the tool mounting plate slides through the inner wall of the rectangular sleeve. The upper surface of the placement plate is provided with two fixed pressure plates, and the serrated blade is located on the opposite side of the two fixed pressure plates; Two third cylinders are fixedly installed on the front and rear surfaces of the rectangular sleeve, and the telescopic ends of the four third cylinders are respectively fixedly connected to the upper surface of the corresponding fixed pressure plate.

[0009] Preferably, a first conveying mechanism is fixedly connected to the opposite surfaces of the two support plates, and the first conveying mechanism is located on the front side of the concave support plate; The height of the first conveying mechanism must be lower than that of the second conveying mechanism; The upper surfaces of the two support plates are each fixedly equipped with a fourth cylinder, and the telescopic ends of the two fourth cylinders are fixedly connected to rectangular mounting plates.

[0010] Preferably, a connecting rod is fixedly connected to the lower surface of the rectangular mounting plate, and a punch is fixedly connected to the lower surface of the connecting rod. An annular hot melt wire is surrounded on the outer wall of the punch. The annular hot melt wire is electrically connected to an external heating controller, and the heating temperature range is 180℃-220℃. Among them, the annular hot melt wire can perform heat sealing treatment on the orifice in 0.5-1 seconds by heating it with electricity; Among them, the two support plates are fixedly connected to the opposite sides of the perforated plate. The upper surface of the perforated plate is parallel to the upper surface of the placement plate. The perforated plate has through holes, and the through holes and the perforating punch are set vertically and vertically respectively.

[0011] Preferably, the auxiliary rod can be replaced with an elastic auxiliary rod that can be slightly bent to adapt to tension. Four T-shaped arc plates are evenly fixed to the outer wall in a cross-shaped distribution. The arc surfaces fit the surface of the woven bag, and the edges are rounded to retain the rotational connection structure with the inclined mounting plate.

[0012] Preferably, the limiting roller can be replaced with an integrated external protrusion limiting roller. The roller body and the protrusion are injection molded from an integrated PP material. The protrusion height is 0.5mm and is evenly distributed on the surface of the roller body. The top of the protrusion is rounded to retain the rotational connection structure with the concave plate.

[0013] Preferably, the fixed pressure plate can be replaced with an arc-shaped fixed pressure plate. The main body of the pressure plate is designed to be arc-shaped to fit the curvature of the bag body, so as to fit the joint of the thick bag. A 3mm thick silicone soft arc-shaped plate is pasted on the lower surface, and the fixed connection structure with the third cylinder is retained.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a combination device for cutting and punching irregular shapes in woven bags, which has the following beneficial effects: Throughout the entire processing, the unwinding, conveying, shearing, and punching processes are seamlessly integrated: the unwinding rollers feed material at a uniform speed, the second conveying mechanism is responsible for conveying the raw material to the shearing station, and after shearing, the first conveying mechanism transfers it to the punching station, realizing one-time feeding, continuous processing, and integrated shearing and punching, completely solving the problems of process dispersion and low production efficiency caused by traditional two independent machines processing separately; at the same time, the precise positioning of the limiting rollers and fixed pressure plates, the burr-free shearing with serrated blades, and the heat sealing treatment of the hole opening of the annular hot melt wire all ensure the precision and quality of the irregular woven bag processing, improving the overall production efficiency and product qualification rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the woven bag irregular shape cutting and punching combination device of this utility model; Figure 2 This is a schematic diagram of the inclined mounting plate of this utility model; Figure 3 This is a schematic diagram of the punching head of this utility model; Figure 4 This is a schematic diagram of the placement plate of this utility model; Figure 5 This is a schematic diagram of the replaceable auxiliary rod of this utility model; Figure 6 This is a schematic diagram of the replaceable limiting roller of this utility model; Figure 7 This is a schematic diagram of the replaceable fixed pressure plate of this utility model.

[0016] In the diagram: 1. Support plate; 2. First cylinder; 3. Concave frame; 4. Servo motor; 5. Auxiliary rod; 6. Lifting plate; 7. Mounting plate; 8. Concave plate; 9. Second cylinder; 10. Connecting plate; 11. Tool mounting plate; 12. Rectangular sleeve; 13. First conveying mechanism; 14. Third cylinder; 15. Second conveying mechanism; 16. Limiting roller; 17. Concave support plate; 18. Fourth cylinder; 19. L-shaped fixing plate; 20. Inclined mounting plate; 21. Perforated plate; 22. Through hole; 23. Perforating punch; 24. Rectangular mounting plate; 25. Connecting rod; 26. Placement plate; 27. Fixing pressure plate. Detailed Implementation

[0017] 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 protection scope of the present utility model.

[0018] Please see Figure 1-7 This utility model provides a new technical solution: a combination device for cutting and punching irregular shapes of woven bags, including an unwinding feeding unit, to achieve uniform feeding of woven bags and avoid accumulation or stretching, comprising: The concave frame 3 is fixed to the rear surface of the two support plates 1, and the left and right inner walls of the concave part are rotatably connected to the fixed mounting rod; it provides installation support for the fixed mounting rod and the unwinding roller to ensure stable unwinding.

[0019] Two fixed mounting rods are used to fix the unwinding rollers on opposite sides via fixed flanges. The left end of the left fixed mounting rod passes through the left side of the concave frame 3. The unwinding rollers are supported and released by the unwinding rollers as the servo motor 4 rotates.

[0020] The fixed flange is fixed to the opposite side of the fixed mounting rod; the unwinding roller is firmly fixed between the two fixed mounting rods to prevent the unwinding roller from shifting during unwinding.

[0021] The unwinding roller is used to wind the woven bag to be processed; it releases the woven bag at a uniform speed as it rotates with the fixed mounting rod, providing raw materials for subsequent processing.

[0022] Servo motor 4 is fixed on the left side of concave frame 3, and its output end is fixed to the left end of the left fixed mounting rod; it drives the fixed mounting rod and unwinding roller to rotate counterclockwise, and the rotation speed is adapted to the running speed of the second conveying mechanism 15 and the first conveying mechanism 13 to ensure that the feeding and conveying rhythm are consistent.

[0023] Two inclined mounting plates 20 are fixed to the front surface of the concave frame 3, and the opposite surfaces are rotatably connected to the auxiliary rod 5; the auxiliary rod 5 is supported to ensure its stable position.

[0024] The auxiliary rod 5 is rotatably connected to the opposite sides of the two inclined mounting plates 20; it guides the direction of the unwound woven bag, prevents the woven bag from shifting during unwound operation, and ensures that it enters the subsequent conveying process smoothly.

[0025] The conveyor limiting unit ensures the woven bags are conveyed flat and prevents displacement, including: Two first cylinders 2 are fixed on the left and right sides of two support plates 1 respectively, and the telescopic ends are fixedly connected to the lifting plate 6; by raising and lowering the telescopic ends, the lifting plate 6 and the lower limiting components are moved to adjust the contact state between the limiting roller 16 and the woven bag.

[0026] The lifting plate 6 is fixed to the telescopic end of the first cylinder 2, and the mounting plate 7 is fixedly connected to its lower surface; it receives the power of the first cylinder 2 and drives the mounting plate 7 and the concave plate 8 to move synchronously.

[0027] The mounting plate 7 is fixedly connected to the concave plate 8 on its lower surface; it supports the concave plate 8 to ensure the stable installation of the limit roller 16.

[0028] Multiple limiting rollers 16 are rotatably connected to the concave part of the concave plate 8, corresponding vertically to the second conveying mechanism 15; providing rotational support for the limiting rollers 16 to ensure precise contact between them and the upper surface of the woven bag.

[0029] There are more than 16 limiting rollers, which are rotatably connected to the concave part of the concave plate 8. They are in close contact with the upper surface of the woven bag and rotate synchronously with the woven bag conveying. This prevents the woven bag from vibrating and tilting upwards, and avoids fiber damage caused by sliding friction, thus ensuring smooth conveying.

[0030] The second conveying mechanism 15 is fixed on the opposite side of the two support plates 1 and is located in front of the concave frame 3; it conveys the unwound woven bag forward to the placement plate 26 of the concave support plate 17, thus completing the material conveying at the shearing station.

[0031] The shearing unit enables burr-free, irregularly shaped shearing of woven bags, preventing dimensional deviations, and includes: The concave support plate 17 is fixed on the opposite side of the two support plates 1 and is located in front of the second conveying mechanism 15. The placement plate 26 is fixedly connected to the left and right inner walls; the placement plate 26 is supported to provide a stable working surface for shearing.

[0032] The upper surface of the placement plate 26 is provided with a cutting groove, and the upper surface is parallel to the upper surface of the first conveying mechanism 13; it carries the woven bag to be cut, and the cutting groove cooperates with the serrated blade to ensure thorough cutting and avoid damage to the blade.

[0033] Two L-shaped fixing plates 19 are fixed on the left and right sides of the concave support plate 17, respectively, and the second cylinder 9 is fixedly installed on the upper surface; the second cylinder 9 is supported to ensure stable output of shearing power.

[0034] Two second cylinders 9 are fixedly connected to the lifting plate 6 at their telescopic ends; the lifting plate 6, the tool mounting plate 11, and the serrated blade move up and down through the telescopic ends to achieve the shearing action.

[0035] A serrated cutting edge is fixedly mounted on the lower surface of the tool mounting plate 11; it supports the serrated cutting edge and ensures that the cutting edge and the cutting groove are aligned vertically.

[0036] The serrated blades correspond to the cutting grooves on the top and bottom; they quickly cut the woven bag during shearing, and the serrated structure prevents the woven bag fibers from producing burrs, ensuring a smooth cut surface.

[0037] The rectangular sleeve 12 is fixed to the opposite sides of the two L-shaped fixing plates 19, and the lower end of the tool mounting plate 11 slides through its inner wall; the movement direction of the tool mounting plate 11 is restricted to ensure that the serrated blade moves only in the vertical direction and avoids shearing deviation.

[0038] Four third cylinders 14 are fixed to the front and rear surfaces of the rectangular sleeve 12 respectively, and the telescopic ends are fixed to the upper surface of the fixed pressure plate 27; the telescopic ends drive the fixed pressure plate 27 to move up and down, so as to fix the woven bag before cutting.

[0039] Two fixed pressure plates 27 are located on the upper surface of the placement plate 26, on both sides of the serrated blade; before cutting, the front and back sides of the woven bag are pressed tightly to prevent the woven bag from shifting due to the force of the blade and to ensure accurate cutting position.

[0040] The punching unit enables irregular punching and heat sealing of the hole openings to prevent fiber fraying, including: The first conveying mechanism 13 is fixed on the opposite side of the two support plates 1, located in front of the concave support plate 17, and its height is lower than that of the second conveying mechanism 15; it conveys the cut woven bags to the punching station to complete the finished product transfer.

[0041] Two fourth cylinders 18 are fixed on the upper surfaces of two support plates 1 respectively, and the telescopic ends are fixedly connected to rectangular mounting plates 24; the telescopic ends drive the rectangular mounting plates 24, connecting rods 25 and punching punches 23 to move up and down to achieve the punching action.

[0042] The lower surface of the rectangular mounting plate 24 is fixedly connected to the connecting rod 25; it supports the connecting rod 25 and the punching head 23, ensuring the stable installation of the punching components.

[0043] The lower surface of the connecting rod 25 is fixedly connected to the punching punch 23; it connects the rectangular mounting plate 24 and the punching punch 23 to transmit punching power.

[0044] The punch 23 has an annular hot melt wire surrounding its outer wall, which is electrically connected to an external heating controller and has a heating temperature of 180℃-220℃. When it moves downward, it passes through the woven bag and inserts into the through hole 22 to complete the irregular punching. The annular hot melt wire simultaneously heat seals the hole opening.

[0045] A ring-shaped hot melt wire is wrapped around the outer wall of the punch 23. After being heated by electricity, it contacts the edge of the hole and heat-seales for 0.5-1s to melt and stick the fibers at the hole opening, preventing the fibers from spreading out during subsequent use and improving the stability of the punched part.

[0046] The punch plate 21 is fixed on the opposite sides of the two support plates 1, and a through hole 22 is provided on the upper surface; to provide an insertion channel for the punch 23, to avoid damage to the punch, and to ensure accurate punching position.

[0047] The through hole 22 corresponds vertically to the punch 23; the punch 23 passes through the hole to complete the irregular punching.

[0048] Furthermore, when using the woven bag irregular shape cutting and punching combination device, the running direction of the second conveying mechanism 15 and the first conveying mechanism 13 is from back to front, the rotation direction of the servo motor 4 is counterclockwise, and the rotation speed of the servo motor 4 is adapted to the running speed of the second conveying mechanism 15 and the first conveying mechanism 13. In this process, the unwinding roller with the woven bag wrapped around it is fixed on two fixed mounting rods. Then, the front end of the woven bag passes through the upper end of the auxiliary rod 5 and then through the lower end of multiple limiting rollers 16. Among them, the two first cylinders 2 are activated, and the extension and retraction ends of the two first cylinders 2 drive the lifting plate 6 to move downwards at one end; When the extension and retraction ends of the two first cylinders 2 drive the lifting plate 6 to move down, the lifting plate 6 drives the mounting plate 7 and the concave plate 8 below to move down synchronously until the multiple limiting rollers 16 at the concave part of the concave plate 8 are in close contact with the upper surface of the woven bag on the second conveying mechanism 15. The limiting rollers 16 can rotate synchronously with the woven bag conveying, which not only limits the upper surface of the woven bag to prevent it from tilting upward due to vibration during the conveying process, but also avoids the fiber damage caused by sliding friction with the surface of the woven bag, ensuring that the woven bag is conveyed flat, laying the foundation for the precise positioning of subsequent shearing and punching. When the servo motor 4 is started, it drives the left fixed mounting rod and the unwinding roller to rotate synchronously. The unwinding roller begins to release the woven bag at a uniform speed. Since the rotation speed of the servo motor 4 is matched with the running speed of the second conveying mechanism 15 and the first conveying mechanism 13, the front end of the woven bag can be guided by the auxiliary rod 5. The auxiliary rod 5 can prevent the woven bag from deviating when unwinding. It smoothly passes through the gap between the limiting roller 16 and the second conveying mechanism 15, and is then conveyed forward by the second conveying mechanism 15 to the placement plate 26 of the concave support plate 17. This achieves continuous and uniform feeding of the woven bag and avoids the accumulation or stretching deformation of the woven bag due to the mismatch between the feeding speed and the conveying speed. When the woven bag is conveyed to the preset cutting position of the placement plate 26, it moves to the designated punching position at the same time, and shuts down the servo motor 4, the second conveying mechanism 15 and the first conveying mechanism. Subsequently, the four third cylinders 14 on the front and rear surfaces of the rectangular sleeve 12 are activated. The telescopic ends of the third cylinders 14 extend downwards simultaneously, driving the two fixed pressure plates 27 to approach the surface of the woven bag until the fixed pressure plates 27 firmly press down on the front and rear sides of the woven bag. Through the pressing action of the fixed pressure plates 27, the woven bag can be prevented from shifting due to the blade force during the cutting process, ensuring accurate cutting position and avoiding non-compliant irregular dimensions caused by cutting deviation. After the fixed pressure plate 27 presses the woven bag, the two second cylinders 9 on the L-shaped fixed plate 19 are activated. The extension and retraction ends of the two second cylinders 99 drive the lifting plate 6, the knife mounting plate 11, and the serrated blade at the lower end to move downwards synchronously. The serrated blade corresponds vertically to the cutting groove on the placement plate 26. During the downward movement, the woven bag can be quickly cut. The serrated structure can effectively prevent the woven bag fiber material from producing burrs due to shearing, ensuring a flat cut surface. After shearing, the extension and retraction end of the first cylinder 2 drives the blade to move upwards and reset. The extension and retraction end of the third cylinder 14 drives the fixed pressure plate 27 to move upwards, releasing the fixation of the woven bag. During shearing, the fourth cylinder 18 on the two support plates 1 is activated simultaneously. The telescopic end of the fourth cylinder 18 drives the rectangular mounting plate 24, the connecting rod 25 and the punching punch 23 to move downward synchronously. At the same time, the annular hot melt wire on the outer wall of the punching punch 23 is energized to heat it to a preset temperature of 180℃-220℃. During this process, the punch 23 moves downwards continuously, passes through the woven bag, and inserts into the through hole 22 of the punch plate 21 to complete the irregular punching. In this process, the annular hot melt wire contacts the edge of the hole in the woven bag and performs a heat sealing treatment on the hole for 0.5-1s. The heat sealing can cause the fibers of the woven bag hole to melt and stick together after being heated, preventing the fibers of the hole from spreading out during subsequent use and improving the structural stability of the punched part. After the punching is completed, the extension end of the fourth cylinder 18 drives the punch 23 to move upwards and reset, the annular hot melt wire is de-energized and cooled down, and the first conveying mechanism 13 continues to convey the processed woven bag to the next process.

[0049] In this process, the unwinding, conveying, shearing, and punching steps are seamlessly connected: the unwinding roller feeds material at a uniform speed, the second conveying mechanism 15 is responsible for conveying the raw material to the shearing station, and after shearing, it is transferred to the punching station by the first conveying mechanism 13. This achieves one-time feeding, continuous processing, and integrated shearing and punching, completely solving the problems of process dispersion and low production efficiency caused by traditional two independent machines. At the same time, the precise positioning of the limiting roller 16 and the fixed pressure plate 27, the burr-free shearing with serrated blades, and the heat sealing treatment of the hole opening of the annular hot melt wire all ensure the precision and quality of the woven bag irregular shape processing, improving the overall production efficiency and product qualification rate. Example 1: Application of a thick fertilizer bag unwinding guide scenario where the elastic auxiliary rod replaces the original auxiliary rod 5. like Figure 5 As shown In the processing of thick polypropylene woven bags (1.2mm thick, prone to local slack or stretching due to uneven tension of raw material winding during unwinding) at a fertilizer plant, the original auxiliary rod 5 was a rigid metal rod with a smooth surface. This rigid metal rod exposed several key problems during unwinding: First, the rigid rod could not adapt to tension changes; slack areas of the woven bag were prone to wrinkling, and stretching areas were prone to fiber deformation, leading to "misaligned shearing" at the wrinkled areas during subsequent cutting. Second, the smooth rod lacked sufficient friction with the thick bag surface, causing the bag to slide and deviate along the rod during unwinding, requiring frequent manual adjustments to the guide position and disrupting the continuous feeding process. Third, the sharp edges of the rigid rod caused repeated friction with the thick bag, resulting in fiber wear on the bag surface and affecting the strength of the packaging bag. Therefore, the original auxiliary rod 5 was replaced with an elastic auxiliary rod made of highly elastic polyurethane material, which can be slightly bent to adapt to tension. Four T-shaped arc plates, evenly distributed in a cross pattern, were fixed to the outer wall, with the arc surfaces conforming to the woven bag surface and rounded edges, retaining the rotating connection structure with the inclined mounting plate 20. The cross-shaped T-shaped arc plates can fit the woven bag surface from four directions, increasing the contact area and friction, and preventing the bag from sliding and shifting along the rod; the unwinding guide process does not require manual adjustment, improving the stability of continuous feeding, and is suitable for the batch unwinding needs of thick fertilizer bags. Furthermore, the rounded corner design of the curved plate and the combined effect of the elastic material prevent fiber wear caused by repeated friction of the thick bag; the wear rate of the bag surface is greatly reduced, the load-bearing strength of the packaging bag is not affected, and the problem of fiber loosening in the subsequent punching parts caused by wear is reduced.

[0050] Example 2: Application of thin storage bag conveying and limiting scenario: replacing the original limiting roller 16 with an externally integrated convex dot limiting roller. like Figure 6 As shown A furniture factory processes thin polyester woven storage bags (bag thickness 0.3mm, lightweight and thin, prone to slipping during transport due to insufficient friction). The original limiting roller 16 was a smooth plastic roller, which had obvious problems during transport and limiting: First, the smooth roller had low friction with the surface of the thin bag, and the bag was prone to slipping when the second transport mechanism 15 was running, causing the shearing position to shift back and forth, resulting in a deviation in the relative position of the punching and shearing; Second, the thin bag was prone to slipping and causing transport jamming, and at the moment of jamming, the bag was easily pressed with indentations by the limiting roller, affecting the appearance of the storage bag; Third, the traditional roller had no anti-slip structure, and the limiting pressure needed to be increased to stabilize the transport, but excessive pressure could easily cause the thin bag fibers to break, reducing the toughness of the bag. At this time, the original limiting roller 16 was replaced with an integrated external convex point limiting roller. The roller and the convex point were injection molded from an integrated PP material, with the convex point height of 0.5mm, evenly distributed on the surface of the roller, and the top of the convex point was rounded off, retaining the rotating connection structure with the concave plate 8; The integrated protrusions can significantly improve the friction between the limiting roller and the surface of the thin bag, and there is no slippage when the second conveying mechanism 15 is running. The problem of the shearing position shifting back and forth is completely solved. The relative position of punching and shearing is always accurate, without the need for subsequent manual correction, which is suitable for the high-precision processing requirements of thin storage bags. The rounded top design of the raised dots avoids indentation on thin bags, and the bag surface is undamaged during transportation; at the same time, the integrated structure eliminates the risk of raised dots falling off, and will not cause "foreign object imprints" on the bag surface due to raised dots falling off, greatly improving the appearance qualification rate of storage bags. With increased friction, stable conveying can be achieved without increasing the limiting pressure, avoiding fiber breakage in thin bags caused by excessive pressure; the bag body's toughness remains intact, and the fibers around the holes are less likely to break during subsequent punching, improving the durability of the storage bag.

[0051] Example 3: Application of thick building material bag cutting and fixing scenario: replacing the original fixing plate 27 with an arc-shaped fixing plate. like Figure 7 As shown A building materials factory processes thick woven bags (used for packaging cement and sand; the bag thickness is uneven, with slight curvature in some areas due to sewing and splicing). The original fixed pressure plate 27 was a flat rigid plate, which revealed the following core problems during shearing and fixing: First, the flat plate could not fit the slight curvature and thickness difference of the bag body, and there were still local gaps after pressing. During shearing, the bag body was prone to shifting at the gaps, resulting in oblique shearing and non-pre-set irregular shapes; Second, the pressing force of the rigid plate on the thick bag was concentrated at the edge, which could easily cause damage to the fiber of the bag edge and affect the sealing of the packaging bag; Third, the traditional pressure plate was in hard contact with the bag body, and when the pressure plate was lifted after shearing, it was easy to pull the bag body up, requiring manual repositioning to the first conveyor mechanism 13, affecting the process connection. At this time, the original fixed pressure plate 27 was replaced with an arc-shaped fixed pressure plate. The main body of the pressure plate was designed to adapt to the curvature of the bag body, which could fit the splicing of the thick bag. A 3mm thick silicone flexible arc plate was pasted on the lower surface, and the fixed connection structure with the third cylinder 14 was retained. The curved pressure plate can conform to the slight curvature of the thick bag, and the soft curved plate can fill the gaps caused by uneven thickness. After pressing, the bag body has no local loosening, and there is no displacement during cutting. The problem of bevel cutting is completely solved, and the irregular cutting shape fully meets the preset requirements. The flexible curved silicone plate can disperse the clamping force and avoid fiber damage caused by concentrated pressure at the edges; the integrity of the bag edges is maintained, and there is no risk of material leakage during subsequent sewing and sealing, which significantly improves the sealing qualification rate of building material packaging bags; The silicone flexible sheet has a smooth surface, so the bag will not be lifted when the pressure plate is raised after shearing. It can fall directly onto the placement plate 26 and be automatically transferred to the punching station by the first conveying mechanism 13. No manual rearrangement is required, the process connection is smoother, and the continuous processing efficiency is improved.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combination device for cutting and punching irregular shapes of woven bags, comprising two support plates (1), characterized in that: The two support plates (1) are arranged in a left-right correspondence. The two support plates (1) are provided with a shearing and punching assembly. The shearing and punching assembly includes a concave frame (3). The concave frame (3) is fixedly connected to the rear surface of the two support plates (1). The left and right inner walls of the concave part of the concave frame (3) are rotatably connected with fixed mounting rods. Among them, the two fixed mounting rods are fixedly mounted with fixed flanges on their opposite sides, and the unwinding rollers are fixedly mounted on the opposite sides of the two fixed mounting rods through the fixed flanges; Among them, the left end of the fixed mounting rod on the left side rotates through the left side of the concave frame (3), and the left side of the concave frame (3) is fixedly mounted with a servo motor (4), and the output end of the servo motor (4) is fixedly connected to the left end of the fixed mounting rod on the left side. Among them, the front surface of the concave frame (3) is fixedly connected to two inclined mounting plates (20), and the opposite surfaces of the two inclined mounting plates (20) are rotatably connected to an auxiliary rod (5). Among them, the two support plates (1) are fixedly installed with a second conveying mechanism (15) on their opposite sides, and the second conveying mechanism (15) is located on the front side of the concave frame (3).

2. The woven bag irregular shape cutting and punching combination device according to claim 1, characterized in that: A first cylinder (2) is fixedly installed on both the left and right sides of the two support plates (1). A lifting plate (6) is fixedly connected to the telescopic end of the two first cylinders (2). A mounting plate (7) is fixedly connected to the lower surface of the lifting plate (6). A concave plate (8) is fixedly connected to the lower surface of the mounting plate (7). Among them, the concave plate (8) and the second conveying mechanism (15) are arranged in an upper and lower correspondence. Multiple limiting rollers (16) are rotatably connected to the concave part of the concave plate (8). The multiple limiting rollers (16) are used to limit the upper surface of the woven bag.

3. The woven bag irregular shape cutting and punching combination device according to claim 1, characterized in that: A concave support plate (17) is fixedly installed on the opposite side of the two support plates (1). The concave support plate (17) is located in front of the second conveying mechanism (15). A placement plate (26) is fixedly connected to the left and right inner walls of the concave support plate (17). The upper surface of the placement plate (26) is parallel to the upper surface of the first conveying mechanism (13). The upper surface of the placement plate (26) is provided with a cutting groove.

4. The woven bag irregular shape cutting and punching combination device according to claim 3, characterized in that: The concave support plate (17) is fixedly connected to L-shaped fixing plates (19) on both the left and right sides. The upper surfaces of the two L-shaped fixing plates (19) are fixedly installed with second cylinders (9). The telescopic ends of the two second cylinders (9) are fixedly connected to lifting plates (6). Among them, the lower surface of the lifting plate (6) is fixedly connected to the tool mounting plate (11), and the lower surface of the tool mounting plate (11) is fixedly installed with a serrated blade, and the serrated blade and the cutting groove are arranged in an upper and lower correspondence.

5. The woven bag irregular shape cutting and punching combination device according to claim 4, characterized in that: A rectangular sleeve (12) is fixedly connected to the opposite surfaces of the two L-shaped fixing plates (19), and the lower end of the tool mounting plate (11) slides through the inner wall of the rectangular sleeve (12); Among them, the upper surface of the placement plate (26) is provided with two fixed pressure plates (27), and the serrated blade is located on the opposite side of the two fixed pressure plates (27); Two third cylinders (14) are fixedly installed on the front and rear surfaces of the rectangular sleeve (12), and the telescopic ends of the four third cylinders (14) are fixedly connected to the upper surface of the corresponding fixed pressure plate (27).

6. The woven bag irregular shape cutting and punching combination device according to claim 1, characterized in that: The two support plates (1) are fixedly connected to the opposite surfaces by a first conveying mechanism (13), which is located on the front side of the concave support plate (17). The height of the first conveying mechanism (13) is lower than that of the second conveying mechanism (15). Among them, the upper surfaces of the two support plates (1) are fixedly installed with a fourth cylinder (18), and the telescopic ends of the two fourth cylinders (18) are fixedly connected with a rectangular mounting plate (24).

7. The woven bag irregular shape cutting and punching combination device according to claim 6, characterized in that: The lower surface of the rectangular mounting plate (24) is fixedly connected to a connecting rod (25), and the lower surface of the connecting rod (25) is fixedly connected to a punch (23). The outer wall of the punch (23) is surrounded by an annular hot melt wire, which is electrically connected to an external heating controller. The heating temperature range is 180℃-220℃. Among them, the annular hot melt wire can perform heat sealing treatment on the orifice in 0.5-1 seconds by heating it with electricity; Among them, the two support plates (1) are fixedly connected to the opposite surfaces of the perforated plate (21). The upper surface of the perforated plate (21) is parallel to the upper surface of the placement plate (26). The perforated plate (21) has a through hole (22). The through hole (22) and the perforating punch (23) are arranged vertically.

8. The woven bag irregular shape cutting and punching combination device according to claim 2, characterized in that: The auxiliary rod (5) can be replaced with an elastic auxiliary rod that can be slightly bent to adapt to the tension. Four T-shaped arc plates are evenly fixed on the outer wall in a cross distribution. The arc surface fits the surface of the woven bag, and the edges are rounded. The rotating connection structure with the inclined mounting plate (20) is retained.

9. The woven bag irregular shape cutting and punching combination device according to claim 2, characterized in that: The limiting roller (16) can be replaced by an integrated external protrusion limiting roller. The roller body and the protrusion are injection molded from an integrated PP material. The protrusion height is 0.5mm and is evenly distributed on the surface of the roller body. The top of the protrusion is rounded and retains the rotating connection structure with the concave plate (8).

10. The woven bag irregular shape cutting and punching combination device according to claim 5, characterized in that: The fixed pressure plate (27) can be replaced with an arc-shaped fixed pressure plate. The main body of the pressure plate is designed to be arc-shaped to fit the curvature of the bag body. It can fit the joint of the thick bag. A 3mm thick silicone soft arc plate is pasted on the lower surface, and the fixed connection structure with the third cylinder (14) is retained.

Images