Woven bag pleat forming tool with dust removal function

Abstract

The application discloses a woven bag pleating forming tool with a dust removal function and belongs to the technical field of packaging bag processing equipment, comprising: a pleating forming unit arranged above a rack, and a hot cutting execution mechanism arranged at a discharging end; a rotating anti-static brush and an electrostatic elimination unit are sequentially arranged at an inlet end, dust is swept, and static electricity of a base material is eliminated; embedded components are driven to move reversely synchronously by a screw rod with reverse threads at two ends, so that the pleating depth is ensured to be left-right symmetrical; a first negative pressure cleaning unit and a second negative pressure cleaning unit respectively collect smoke dust and slag at a cutting station and fiber dust at a pleating station, and the two sets of units are independent of each other and are merged into the same collecting box. The application solves the problems of unorganized diffusion of dust, poor consistency of pleating depth adjustment and electrostatic adsorption of dust in the existing equipment, improves the cleanliness of finished products, reduces the rate of defective products, and is suitable for large-batch continuous production of woven bags.

Description

Technical Field

[0001] This invention relates to the field of packaging bag processing equipment technology, and discloses a pleating and forming tool for woven bags with dust removal function. Background Technology

[0002] Woven bags are widely used packaging containers in industries such as grain, chemical raw materials, feed, and building materials. Among them, polypropylene woven tubular bags and PE plastic film tubular bags have seen continuous growth in market demand due to their low cost and excellent load-bearing capacity. Before being processed into finished packaging bags, the tubular substrate needs to undergo continuous feeding, double-sided pleating, and fixed-length heat cutting processes. Pleating creates concave edges on the bag body, facilitating subsequent stacking, filling, and sealing. The pleating device is a core specialized piece of equipment in the packaging bag production line.

[0003] Currently, pleating equipment in the industry is mainly divided into two categories: simple fixed type and adjustable type. Adjustable pleating machines, due to their flexible adjustment of pleat depth and pleat spacing, are gradually replacing fixed equipment. Although existing adjustable pleating devices can adapt to multiple bag sizes, they lack a supporting dust collection structure in long-term continuous industrial production. Dust spreads unorganized throughout the production process. Friction between woven substrates and forming parts generates a large amount of fiber debris and fine plastic dust. During subsequent hot cutting, machine fumes and high-temperature plastic slag are also released. These pollutants lack any directional collection channels, polluting the workshop environment and easily adhering to the bag surface, resulting in substandard cleanliness of the finished product. Poor synchronization of pleat depth adjustment leads to a high defect rate. Existing inserts mostly adopt a double-sided independent screw manual adjustment structure without a synchronous linkage transmission design. It is difficult to ensure the consistency of the displacement of the left and right inserts, which easily results in defective products with asymmetrical pleat depth on both sides. Moreover, the adjustment efficiency is low, and changeover is time-consuming. There are no static electricity elimination measures, making dust cleaning difficult. During the high-speed transport of the substrate, continuous friction generates static electricity, which attracts dust and makes it difficult for the dust to fall off by its own weight. In particular, the dust accumulated in the folds and gaps cannot be effectively cleaned, requiring frequent manual shutdowns for cleaning, which affects continuous production efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of unorganized dust and smoke emission, poor consistency in pleat depth adjustment, and low cleanliness of finished products caused by electrostatic adsorption and dust accumulation in existing pleating equipment, and to provide a woven bag pleating forming tool with dust removal function.

[0005] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is: a pleating and forming fixture for woven bags with dust removal function, including a frame, a pleating and forming unit, a hot cutting execution mechanism, a first negative pressure cleaning unit, a second negative pressure cleaning unit, an electrostatic elimination unit, a rotating antistatic brush, and an embedded component.

[0006] The frame serves as the mounting base for the entire machine. Along the direction of material conveying, the feeding station, electrostatic treatment station, pleating and forming station, and hot cutting station are arranged in sequence to ensure smooth connection between each process and adapt to the needs of continuous production.

[0007] The pleating unit is mounted above the frame and is used to pleat the tubular woven material on both sides to form a regular concave edge, which meets the size requirements for subsequent stacking and filling and sealing.

[0008] The hot cutting actuator is located at the output end of the frame and is used to perform fixed-length hot cutting on the pleated woven material, dividing the continuous substrate into bag semi-finished products of a set length, so as to realize segmented material cutting for continuous production.

[0009] The first negative pressure cleaning unit is located below the cutting station of the hot cutting actuator. It is used to collect the high-temperature organic dust and molten plastic residue generated during the cutting process in a directional manner, so as to prevent the dust from spreading to the workshop and the molten residue from scattering and accumulating. At the same time, it reduces the amount of pollutants adhering to the cut of the bag after cutting.

[0010] The second negative pressure cleaning unit is installed directly above the pleating and forming unit to comprehensively collect fiber dust and fine plastic particles generated during the pleating and friction process, control dust diffusion from the source of dust generation, and reduce the dust concentration in the workshop.

[0011] The static elimination unit and the rotating antistatic brush are sequentially positioned in front of the feeding end of the pleating forming unit along the material conveying direction, forming a two-stage electrostatic dust removal structure. The rotating antistatic brush removes floating dust from the surface of the woven material through the non-contact interaction between the conductive bristles and the substrate, while simultaneously dissipating some of the static electricity generated on the substrate surface due to friction. The static elimination unit ionizes the air through high-voltage discharge, forming an ion flow to neutralize residual static electricity on the substrate surface, fundamentally eliminating the physical conditions for electrostatic adsorption of dust and effectively preventing dust accumulation in the pleats and gaps.

[0012] The embedded component is located on the upper surface of the frame and directly below the pleating unit. It includes a lead screw and two embedded pieces driven by the lead screw. The threads at both ends of the lead screw have opposite directions. Rotating the lead screw can drive the two embedded pieces to move synchronously in opposite directions, thereby adjusting the pleating depth. The transmission structure of a single positive and negative thread lead screw can ensure that the displacement of the embedded pieces on both sides is completely consistent, solving the problem of asymmetrical pleating depth from a structural perspective.

[0013] The first negative pressure purification unit and the second negative pressure purification unit are two independent negative pressure collection systems, each adapted to the characteristics of pollutants at different workstations. They are connected to the same collection box at the end, realizing centralized collection and unified treatment of dust and smoke, and reducing operation and maintenance costs.

[0014] In a preferred embodiment, the pleating forming unit includes a front fixed rod, a rear fixed rod, and two sets of side rods symmetrically arranged on the left and right. The front and rear fixed rods are connected to the outer surface of the frame via a mounting platform, forming a rigid support frame for the forming unit. Each set of side rods consists of an upper plate and a lower plate joined together, with inner rollers clamped between the upper and lower plates and part of the roller surface exposed. Outer rollers are correspondingly arranged on the outer side of each inner roller on the frame, with the center distance between the two outer rollers being greater than the center distance between the two inner rollers. The sides of the tubular woven material are clamped between the inner and outer rollers, forming rolling traction. Using rolling clamping conveying instead of traditional sliding friction conveying can significantly reduce the pulling and wear of the woven material, reducing fiber debris generation at the source, while improving conveying stability and preventing substrate deviation.

[0015] In a preferred embodiment, a toggle ring is provided at the front end of the front fixing rod. This ring pre-expands the tubular woven material before the substrate enters the side rod forming area, while simultaneously restraining the lateral offset of the substrate. This ensures the substrate enters the pleating process in a smooth and flat state, guaranteeing the regularity of the pleating formation. For substrates of different widths, the toggle ring can move synchronously with the front fixing rod, and the expansion amplitude changes synchronously, eliminating the need for separate disassembly and adjustment, thus improving the efficiency of shape changeover.

[0016] As a preferred embodiment, both the upper and lower plates are attached with polyurethane wear-resistant pads on the side facing the woven material. By replacing the hard metal surface with a flexible wear-resistant material in contact with the substrate, the friction loss of the substrate can be reduced, the amount of dust generated can be further reduced, the wear of the molded parts can be reduced, and the service life of the equipment can be extended.

[0017] In a preferred embodiment, the embedded component further includes a support plate, two threaded blocks, a fixing block, a turntable, fixing screws, and locking screws. The support plate is mounted on the outer surface of the frame and has guide rails extending in the left-right direction. The threaded blocks have a groove at the bottom that mates with the guide rails and a threaded hole in the middle that mates with the lead screw. The guide rails and grooves form a sliding pair, ensuring smooth and wobbly movement of the threaded blocks. The lead screw passes through the two fixing blocks, which provide rotational support for the lead screw. The turntable is mounted on one end of the lead screw for easy manual adjustment by the operator. The fixing screws detachably fix the embedded piece to the upper surface of the threaded blocks for easy replacement and maintenance after wear. The locking screws, screwed into the fixing blocks, lock the lead screw, locking the position after adjustment to prevent displacement of the embedded piece due to vibration during production, ensuring long-term stability of the pleated dimensions.

[0018] In a preferred embodiment, the hot cutting actuator includes a gantry frame, a vertical cylinder, a floating blade holder, a blade mounting housing, a hot cutting blade, and a guide rail plate. The gantry frame is fixedly connected to the outer wall of the machine frame, forming a rigid support structure for the cutting station. The vertical cylinder is installed in the center of the gantry frame beam, and its piston rod is fixedly connected to the floating blade holder, providing driving force for the cutting action. The hot cutting blade is mounted at the lower end of the blade mounting housing. Heating elements within the blade mounting housing are evenly arranged along the length of the hot cutting blade, ensuring uniform heating along its entire length. This ensures sufficient melting of the substrate during cutting, resulting in a smooth cut without burrs or connecting threads. The guide rail plate is vertically mounted on the inner wall of the gantry frame. The sliding grooves at both ends of the floating blade holder move up and down along the guide rail plate, providing precise guidance for the blade and ensuring smooth operation and a straight cut.

[0019] In a preferred embodiment, the floating blade holder is connected to smoothing blocks via compression springs at both ends. The initial bottom height of the smoothing blocks is lower than the blade height of the hot-cutting blade. During cutting, the smoothing blocks press against the surface of the woven material before the hot-cutting blade, flattening and fixing the substrate in the area to be cut. As the blade holder continues to descend, the compression springs are compressed, and the hot-cutting blade contacts the substrate to complete the cut. This structure prevents the substrate from wrinkling or shifting during cutting, further improving the straightness and regularity of the cut.

[0020] In a preferred embodiment, a cutting support surface is installed directly below the hot cutting actuator on the frame. A cutting slit is formed on the cutting support surface to fit snugly against the hot cutting blade, providing a cutting alignment reference for the blade and ensuring complete cutting of the substrate. The first negative pressure cleaning unit includes an air inlet, a collection box, a connecting pipe, a first corrugated pipe, and a first negative pressure pipeline. The air inlet is located at the bottom of the cutting support surface, with its center directly facing the cutting slit. The vertical spacing is set to 10mm-15mm, which ensures that the horizontal conveying of the woven material is not obstructed while maintaining concentrated negative pressure suction for efficient capture of dust generated during cutting. The collection box is located below the air inlet to trap large molten slag particles, preventing them from entering the pipeline and causing blockages. A filter structure is installed on the side wall of the connecting pipe to perform preliminary filtration of fine dust, extending the maintenance cycle of subsequent pipelines and the collection box. The first corrugated pipe connects to the collection box via the first negative pressure pipeline. The corrugated pipe structure can be adapted to fine adjustments in the installation position, reducing assembly precision requirements.

[0021] In a preferred embodiment, the second negative pressure dust removal unit includes a suction hood, a second corrugated pipe, and a second negative pressure pipeline. The input end of the suction hood is a wide rectangle, covering the entire pleating area, enabling full-width dust collection. The bottom surface of the suction hood's input end is 15mm to 30mm from the upper surface of the woven material. This distance balances the negative pressure collection effect with the substrate conveying space, ensuring dust collection efficiency while preventing the suction hood from scratching the substrate and affecting the pleating quality. The output end of the suction hood is connected to a collection box via the second corrugated pipe and the second negative pressure pipeline, centrally conveying and processing the fiber dust generated during pleating.

[0022] In a preferred embodiment, the static elimination unit includes a housing, an insulating base, and discharge needles. The housing is fixedly connected to the insulating base, which is mounted on a frame. Multiple discharge needles are arranged equidistantly along the length of the insulating base, with their tips facing the air outlet. During operation, the discharge needles ionize the surrounding air with high voltage, forming an airflow carrying positive and negative ions that blows onto the substrate surface, neutralizing residual static charge. The rotating antistatic brush includes a motor-driven brush roller, conductive nylon bristles, and a mounting bracket. The mounting bracket is fixedly connected to both sides of the frame, and the brush roller is rotatably mounted on the bracket. The conductive nylon bristles are located on the outer wall of the brush roller and can be arranged in a spiral or straight pattern. The gap between the bristles and the upper surface of the woven material is 0.5mm to 1.5mm, and the volume resistivity is controlled within 10 ohms. 4 Ω~10 9 Ω. This gap parameter prevents the brush bristles from scratching the woven material while ensuring effective static discharge and dust removal. The resistance parameter range ensures efficient static discharge while avoiding safety hazards caused by excessive conductivity. The rotating antistatic brush is located at the front end of the static elimination unit along the conveying direction. The air outlet of the static elimination unit is higher than the axis of the brush roller, forming a two-stage treatment process of first removing static electricity and then neutralizing residual static electricity, resulting in more thorough static elimination and dust removal.

[0023] Compared with the prior art, the present invention uses independently set first negative pressure cleaning unit and second negative pressure cleaning unit to collect the smoke and slag from the hot cutting station and the fiber dust from the pleating station at fixed points. The two types of pollutants are collected into the collection box for centralized treatment, which not only effectively curbs the unorganized spread of dust and improves the workshop production environment, but also reduces the amount of pollutants adhering to the surface of woven bags, significantly improves the cleanliness of the finished product, and reduces the workload of subsequent cleaning processes.

[0024] The embedded component adopts a single screw drive structure with opposite rotation directions at both ends. A single rotation can drive the two embedded pieces to move synchronously in opposite directions. The displacement of the embedded pieces on the left and right sides is completely consistent, which solves the problem of asymmetrical fold depth caused by the traditional independent adjustment method, effectively reducing the defect rate. After adjustment, the position can be locked by locking screws, and there is no displacement deviation during the production process.

[0025] A composite treatment structure consisting of a rotating antistatic brush and an electrostatic elimination unit is installed at the feeding end. First, the conductive brush removes surface dust and discharges some static electricity. Then, the residual static electricity is neutralized by ionizing the air, eliminating the physical conditions for electrostatic adsorption of dust. This effectively prevents dust accumulation in crevices and reduces the frequency of manual shutdowns for cleaning, thereby improving continuous production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the pleating forming unit of the present invention;

[0028] Figure 3 This is a schematic diagram of the static elimination unit of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the embedded component of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the first negative pressure purification unit of the present invention;

[0031] Figure 6 for Figure 5 A partial sectional view along direction A in the middle;

[0032] Figure 7 This is a schematic diagram of the cooperation structure between the hot cutting actuator and the cutting support surface of the present invention;

[0033] Figure label:

[0034] 1. Frame; 14. Cutting support surface; 141. Cutting seam; 15. Outer roller; 16. Front support roller; 17. Rear support roller;

[0035] 2. Pleating forming unit; 21. Front fixing rod; 22. Rear fixing rod; 23. Side rod; 231. Upper plate; 232. Lower plate; 24. Inner roller; 25. Actuating ring;

[0036] 3. Hot cutting actuator; 31. Gantry frame; 32. Vertical cylinder; 33. Piston rod; 34. Floating blade holder; 35. Blade mounting housing; 36. Hot cutting blade strip; 37. Guide rail plate;

[0037] 4. First negative pressure purification unit; 41. Air intake; 42. Collection box; 43. Connecting pipe; 431. Filter structure; 44. First corrugated pipe; 45. First negative pressure pipeline;

[0038] 5. Second negative pressure purification unit; 51. Suction hood; 52. Second corrugated pipe; 53. Second negative pressure pipeline;

[0039] 6. Static electricity elimination unit; 61. Outer shell; 62. Insulating base; 63. Discharge needle;

[0040] 7. Rotating antistatic brush; 71. Brush roller; 72. Conductive nylon bristles; 73. Mounting bracket;

[0041] 8. Embedded component; 81. Support plate; 811. Guide rail; 82. Threaded block; 821. Slide groove; 822. Threaded hole; 83. Fixing block; 84. Lead screw; 85. Turntable; 86. Fixing screw; 87. Locking screw; 88. Embedded piece. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0043] Example 1

[0044] like Figure 1 As shown in this embodiment, a pleating and forming fixture for woven bags with dust removal function is arranged in a straight line along the conveying direction of the tubular woven material. It is suitable for pleating and cutting various tubular packaging materials such as polypropylene woven tubular bags and PE plastic film tubular bags to a fixed length. The fixture mainly includes:

[0045] The frame 1 adopts a frame structure formed by welding tubing, serving as the mounting base for the entire machine. Along the direction of material conveying, the frame 1 is sequentially equipped with a feeding station, a rotating anti-static brush station, a static elimination station, a pleating and forming station, and a hot cutting station. The tubular weaving material roller is rotatably mounted at the feeding end of the frame 1, and is driven by a drive mechanism to feed the material at a uniform speed, continuously supplying the base material for subsequent processes.

[0046] Along the direction of the woven material conveying, the rotating antistatic brush 7 and the static elimination unit 6 are sequentially arranged in front of the feeding end of the pleating and forming unit 2, forming a pre-static dust removal treatment station. Figure 1 As shown, the rotating antistatic brush 7 includes a brush roller 71, conductive nylon bristles 72, and a mounting bracket 73. The mounting bracket 73 is fixedly connected to the frame 1. The two ends of the brush roller 71 are rotatably mounted on the mounting bracket 73 via bearings and are driven to rotate at a uniform speed by an external drive motor. The conductive nylon bristles 72 are evenly distributed on the outer side wall of the brush roller 71, and in this embodiment, they are arranged in a straight line. The gap between the conductive nylon bristles 72 and the upper surface of the braided material below is controlled at 0.5mm to 1.5mm, and the volume resistivity of the bristles is controlled at 10 Ω·cm. 4 Ω~10 9Within the Ω range. During operation, the rotating bristles can sweep away the floating dust on the surface of the woven material, and at the same time, through its conductive properties, it can discharge some of the static electricity generated on the surface of the substrate due to friction to the grounding terminal of the frame, thus achieving preliminary dust removal and static electricity reduction.

[0047] like Figure 1 , Figure 3 As shown, the static elimination unit 6 is located downstream of the rotating antistatic brush 7 and includes a housing 61, an insulating base 62, and discharge needles 63. The insulating base 62 is fixedly mounted on the frame 1, and the housing 61 is fixedly connected to the upper part of the insulating base 62. A long strip-shaped air outlet is provided on the side of the housing 61 facing the conveying direction. Multiple discharge needles 63 are arranged equidistantly along the length of the insulating base 62, with the needle tips facing the air outlet. During operation, the discharge needles 63 ionize the surrounding air through high-voltage discharge, forming an airflow carrying positive and negative ions that blows onto the surface of the woven material, neutralizing the residual static charge on the substrate, completely eliminating the conditions for electrostatic adsorption of dust, and preventing dust from accumulating in the subsequently formed folds and gaps. The height of the air outlet of the static elimination unit 6 is higher than the axis of the brush roller 71, ensuring that the ion airflow can fully cover the width of the substrate and will not interfere with the structure of the brush roller.

[0048] The pleating unit 2 is mounted above the frame 1 and is used to pleat and shape the tubular woven material that has undergone electrostatic dust removal treatment by folding it inwards on both sides. For example... Figure 2 As shown, the pleating forming unit 2 includes a front fixing rod 21, a rear fixing rod 22, and two sets of side rods 23 arranged symmetrically on the left and right. The front fixing rod 21 and the rear fixing rod 22 are respectively fixed to the front and rear ends of the two sets of side rods 23, forming the main frame of the forming unit, and are fixedly connected to the outer surface of the frame 1 through a mounting platform. Each set of side rods 23 is composed of an upper plate 231 and a lower plate 232. The inner roller 24 is clamped between the upper plate 231 and the lower plate 232, and the inner wheel surface of the roller is exposed from the inside of the side rod. Correspondingly, an outer roller 15 is installed on the outside of each inner roller 24 on the frame 1. The center distance between the two outer rollers 15 is greater than the center distance between the two inner rollers 24. The side of the tubular braided material is clamped between the inner roller 24 and the outer roller 15, and the rolling friction of the rollers forms rolling traction, driving the substrate forward at a uniform speed. Compared to traditional sliding friction conveying, the rolling clamping method can significantly reduce the pulling and wear of the substrate, reduce the generation of fiber debris, and at the same time prevent the substrate from deviating, thus improving the conveying stability.

[0049] As a preferred structure, a toggle ring 25 is fixedly installed at the front end of the front fixing rod 21. The toggle ring 25 has an outwardly expanding annular structure, which can pre-open the tubular woven material before the substrate enters the side rod area, while restraining the lateral displacement of the substrate, so that the substrate enters the pleating area in a smooth and flat state, ensuring the regularity of the pleating formation. For substrates of different widths, the toggle ring 25 can be adjusted synchronously with the front fixing rod 21, and the opening range changes synchronously, without the need for separate disassembly and adjustment. Furthermore, polyurethane wear-resistant pads are attached to the surfaces of the upper plate 231 and the lower plate 232 facing the woven material. By replacing the hard metal surface with a flexible wear-resistant material in contact with the substrate, the friction wear of the substrate can be reduced, the generation of fiber dust can be further reduced, and the service life of the side rod components can be extended.

[0050] The frame 1 is also equipped with a front support roller 16 and a rear support roller 17. The front support roller 16 is located below the feeding end of the pleating forming unit 2, supporting the front end of the front fixing rod 21 and the side rod 23, preventing the feeding end of the forming unit from sagging and deforming. The roller body can rotate freely and will not obstruct the conveying of the substrate. The rear support roller 17 is located below the discharging end of the pleating forming unit 2, supporting the pleated substrate, preventing the newly formed pleated edge from collapsing and rebounding, and ensuring the shaping effect of the pleat depth and pleat edge.

[0051] like Figure 1 , Figure 4 As shown, the embedded component 8 is mounted on the upper surface of the frame 1 and located directly below the pleating unit 2. It is used to lift the substrate from the inside to form an inner folded edge and allows for flexible adjustment of the pleating depth. Figure 4 As shown, the embedded component 8 includes a support plate 81, two threaded blocks 82, a fixing block 83, a lead screw 84, a turntable 85, a fixing screw 86, a locking screw 87, and two embedded pieces 88. The support plate 81 is fixedly installed on the outer surface of the frame 1, and a guide rail 811 extending in the left-right direction is provided on the upper surface of the support plate 81. Each threaded block 82 has a groove 821 at its bottom that mates with the guide rail 811, allowing the threaded block 82 to slide smoothly left and right along the guide rail 811. A threaded hole 822 is provided in the middle of the threaded block 82, forming a threaded transmission engagement with the lead screw 84. The lead screw 84 is horizontally inserted through the two fixing blocks 83, which are fixed to the support plate 81, providing rotational support for the lead screw 84. The turntable 85 is fixedly installed at one end of the lead screw 84, facilitating manual rotation and adjustment by the operator.

[0052] The threads at both ends of the lead screw 84 rotate in opposite directions, and two threaded blocks 82 respectively engage with the two reverse threads of the lead screw 84. When the turntable 85 is rotated, the lead screw 84 rotates synchronously, driving the two threaded blocks 82 to move synchronously in opposite directions along the guide rail 811 through the reverse thread transmission. This, in turn, drives the two insert pieces 88 to move closer or further away synchronously, thereby adjusting the pleating depth. Because a single positive and negative thread lead screw is used for transmission, the displacement of the insert pieces 88 on both sides is completely consistent, ensuring symmetrical pleating depth on both sides and avoiding defective products with skewed pleats. The fixing screw 86 detachably fixes the insert piece 88 to the upper surface of the threaded block 82 for easy replacement and maintenance after wear. The locking screw 87 is screwed into the threaded hole of the fixing block 83. After tightening, it can press against the surface of the lead screw 84 to lock it in place. After adjustment, locking the lead screw position can prevent the insert piece 88 from shifting due to vibration during production, ensuring the long-term stability of the pleating size.

[0053] The hot cutting actuator 3 is located at the discharge end of the frame 1 and is used to perform fixed-length hot cutting of the pleated woven material, dividing the continuous substrate into bag semi-finished products of a set length. For example... Figure 7 As shown, the hot cutting actuator 3 includes a gantry frame 31, a vertical cylinder 32, a floating blade holder 34, a blade mounting housing 35, a hot cutting blade 36, and a guide rail plate 37. The gantry frame 31 consists of two side columns and a top beam, which are fixedly connected to the outer side wall of the frame 1, forming a rigid support frame for the cutting station. The vertical cylinder 32 is vertically mounted in the center of the upper surface of the beam of the gantry frame 31. The piston rod 33 of the vertical cylinder 32 extends downward and its lower end is fixedly connected to the upper surface of the floating blade holder 34, providing linear driving force for the cutting action. The blade mounting housing 35 is embedded in the bottom groove of the floating blade holder 34, and the hot cutting blade 36 is fixedly mounted on the lower end of the blade mounting housing 35. Multiple heating elements are installed inside the blade mounting housing 35, and the heating elements are evenly distributed along the length of the hot cutting blade 36 to ensure that the hot cutting blade 36 is heated evenly along its entire length, so that the substrate melts fully during cutting, and the cut is smooth without burrs or connecting threads.

[0054] Two guide rail plates 37 are vertically fixed to the inner sidewalls of the gantry frame 31 on both sides. Slide grooves are provided at both ends of the floating blade holder 34, engaging with the guide rail plates 37 to allow the floating blade holder 34 to move smoothly up and down along the guide rail plates 37, ensuring the blade moves without swaying during cutting and producing a straight cut. Preferably, flattening blocks are connected to the bottom of both ends of the floating blade holder 34 via compression springs, with the bottom surface of the flattening blocks lower than the initial lower edge of the hot-cutting blade strip 36. During cutting, the vertical cylinder 32 pushes the floating blade holder 34 downwards. The flattening blocks first contact and press against both sides of the area to be cut in the woven material, flattening and fixing the substrate. As the blade holder continues to descend, the compression springs are compressed, and the hot-cutting blade strip 36 contacts the substrate to complete the cut. This structure prevents the substrate from wrinkling or shifting during cutting, further ensuring the flatness of the cut.

[0055] A cutting support surface 14 is fixedly installed on the frame 1 directly below the hot cutting execution mechanism 3. A cutting slit 141 extending along the width direction is opened on the upper surface of the cutting support surface 14. The cutting slit 141 is directly opposite the hot cutting blade 36. When the hot cutting blade 36 moves downward to cut, it can be embedded in the cutting slit 141 to ensure that the substrate is completely cut off and to avoid the phenomenon of tangled threads.

[0056] The first negative pressure cleaning unit 4 is located below the cutting support surface 14, corresponding to the hot cutting station, and is used to collect organic fumes and high-temperature plastic slag generated during the cutting process. Figure 5 , Figure 6 As shown, the first negative pressure purification unit 4 includes an air intake 41, a collection box 42, a connecting pipe 43, a first corrugated pipe 44, and a first negative pressure pipeline 45. The air intake 41 is fixedly installed at the bottom of the cutting support surface 14, with the center of the air intake 41 directly facing the cutting seam 141. The vertical distance between the top surface of the air intake and the cutting seam 141 is set to 10mm to 15mm. This distance will not hinder the horizontal conveying of the woven material, but will ensure concentrated negative pressure suction, which can efficiently capture the smoke and slag generated during cutting. The lower end of the air intake 41 is connected to the connecting pipe 43. The collection box 42 is detachably installed directly below the connecting pipe 43. Large particles of molten plastic slag fall into the collection box 42 under gravity and are intercepted, preventing large particles from entering the subsequent pipeline and causing blockage. A filter structure 431 is provided on the side wall of the connection end between the connecting pipe 43 and the first corrugated pipe 44, which can perform preliminary filtration of fine smoke and dust, extending the maintenance cycle of the subsequent pipeline and collection equipment. The other end of the first corrugated pipe 44 is connected to the first negative pressure pipeline 45, and the end of the first negative pressure pipeline 45 is connected to an external centralized collection box, which transports the collected smoke and particulate matter to the collection box for centralized treatment. The corrugated pipe structure can be adapted to fine adjustments of the installation position, reducing the requirements for assembly precision.

[0057] The second negative pressure cleaning unit 5 is installed directly above the pleating unit 2 to collect fiber dust and fine plastic particles generated during the pleating process. Figure 1 As shown, the second negative pressure cleaning unit 5 includes a suction hood 51, a second corrugated pipe 52, and a second negative pressure pipeline 53. The suction hood 51 has a rectangular flared structure with the larger end facing down, and its input end covers the entire pleating area, enabling full-width dust collection. The distance between the bottom surface of the suction hood 51's input end and the upper surface of the woven material below is set to 15mm to 30mm. This distance ensures that the negative pressure airflow covers the entire pleating area without scratching the substrate during transport, thus avoiding affecting the pleating quality. The output end of the suction hood 51 is connected to one end of the second corrugated pipe 52, and the other end of the second corrugated pipe 52 is connected to the second negative pressure pipeline 53. The end of the second negative pressure pipeline 53 is also connected to the aforementioned centralized collection box.

[0058] The first negative pressure purification unit 4 and the second negative pressure purification unit 5 are two independent negative pressure systems, which collect pollutants in a targeted manner according to the characteristics of different workstations, resulting in higher collection efficiency. Finally, the pollutants are collected into the same collection box for centralized treatment, which facilitates subsequent operation and maintenance management.

[0059] During use, the equipment is powered on and connected to a negative pressure air source. The tubular braided material roller feeds the material at a uniform speed. The tubular braided material passes sequentially along the conveying direction through the rotating antistatic brush 7, the static elimination unit 6, and the pleating and forming unit 2, and is finally conveyed to the hot cutting execution mechanism 3 to complete the fixed-length cutting. When the substrate is conveyed to the front end, the brush roller 71 of the rotating antistatic brush 7 drives the conductive nylon bristles 72 to rotate, sweeping off the floating dust on the surface of the substrate and dissipating some of the static electricity generated by friction. Subsequently, the substrate passes under the static elimination unit 6, where the ionized ion gas flow neutralizes the residual static charge on the surface of the substrate, eliminating the static adsorption effect and preventing subsequent dust adhesion. The substrate that has undergone static treatment enters the pleating and forming unit 2. Under the pre-opening and guiding action of the actuating ring 25, the side of the substrate enters the clamping channel between the inner roller 24 and the outer roller 15, and moves forward at a uniform speed under rolling traction. At the same time, the two embedded pieces 88 of the lower embedded component 8 push the substrate inward from the inside, and with the limiting action of the side rod 23, regular concave folds are formed on both sides of the substrate. During the pleating process, the upper second negative pressure cleaning unit 5 continuously generates negative pressure, which promptly removes the fiber dust generated by friction through the suction hood 51 and transports it to the collection box. After pleating, the substrate continues to be transported forward to the hot cutting station. The vertical cylinder 32 drives the floating blade holder 34 downward, the flattening block first flattens the substrate, and then the hot cutting blade 36 melts and cuts the substrate. The high-temperature fumes and slag generated during cutting are promptly sucked in by the suction port 41 of the lower first negative pressure cleaning unit 4. Large particles of slag are trapped in the collection box 42, and fine fumes are filtered and transported to the collection box for centralized treatment. After cutting is completed, the vertical cylinder 32 drives the blade holder to move upward and reset, waiting for the next cutting cycle. When it is necessary to change to different specifications of woven bags or adjust the pleating depth, loosen the locking screw 87, rotate the turntable 85 to drive the lead screw 84 to rotate, and drive the two side embedded pieces 88 to move synchronously in opposite directions through the positive and negative threads. After adjusting to the target pleating depth, tighten the locking screw 87 to lock the position, and production can continue stably.

[0060] Example 2

[0061] The difference between this embodiment and Embodiment 1 is that the conductive nylon bristles 72 are arranged in a spiral pattern. Compared to a straight arrangement, the spiral arrangement of the bristles results in more continuous and uniform contact with the substrate surface during rotation, leading to a more stable dust removal effect and making it suitable for processing substrates with a lot of surface dust. The remaining structure, connection relationships, and working principle are exactly the same as in Embodiment 1, and will not be repeated here.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pleating and forming tool for woven bags with dust removal function, characterized in that, include: Rack (1); A pleating unit (2) is mounted above the frame (1) and is used to pleat and shape the tubular woven material. The hot cutting actuator (3) is located at the discharge end of the frame (1) and is used to hot cut the pleated woven material to a fixed length. The first negative pressure cleaning unit (4) is located below the cutting station of the hot cutting actuator (3) and is used to collect cutting fumes and slag. The second negative pressure cleaning unit (5) is installed directly above the pleating forming unit (2) and is used to collect fiber dust generated during the pleating process. The static elimination unit (6) and the rotating antistatic brush (7) are arranged sequentially in front of the feeding end of the pleating forming unit (2) along the direction of the weaving material conveying. The rotating antistatic brush (7) is used to remove surface dust and discharge some static electricity. The static elimination unit (6) is used to ionize the air to neutralize the residual static electricity. The embedded component (8) is located on the upper surface of the frame (1) and directly below the pleating forming unit (2). It includes a lead screw (84) and two embedded pieces (88) driven by it. The threads at both ends of the lead screw (84) are turned in opposite directions. Rotating the lead screw (84) causes the two embedded pieces (88) to move synchronously in opposite directions to adjust the pleating depth. The first negative pressure purification unit (4) and the second negative pressure purification unit (5) are independent of each other and their ends are connected to the same collection box.

2. The pleating and forming fixture for woven bags with dust removal function according to claim 1, characterized in that, The pleating unit (2) includes a front fixing rod (21), a rear fixing rod (22), and two sets of side rods (23) that are symmetrical on the left and right. The front fixing rod (21) and the rear fixing rod (22) are connected to the outer surface of the frame (1) via a mounting platform; Each set of side bars (23) consists of an upper plate (231) and a lower plate (232), with inner rollers (24) clamped between the upper plate (231) and the lower plate (232) and partially exposed. On the frame (1), an outer roller (15) is provided outside the inner roller (24). The center distance between the two outer rollers (15) is greater than the center distance between the two inner rollers (24). The tubular woven material is sandwiched between the inner roller (24) and the outer roller (15) to form rolling traction.

3. The pleating and forming fixture for woven bags with dust removal function according to claim 2, characterized in that, The front fixing rod (21) is provided with a toggle ring (25) at the front end, which is used to pre-open the tubular woven material and limit its left and right displacement.

4. The pleating and forming fixture for woven bags with dust removal function according to claim 2, characterized in that, Both the upper plate (231) and the lower plate (232) have polyurethane wear-resistant pads attached to the side facing the woven material.

5. The pleating and forming fixture for woven bags with dust removal function according to claim 1, characterized in that, The embedded component (8) also includes a support plate (81), two threaded blocks (82), a fixing block (83), a turntable (85), a fixing screw (86), and a locking screw (87); The support plate (81) is installed on the outer surface of the frame (1), and the support plate (81) is provided with a guide rail (811). The bottom of the threaded block (82) is provided with a sliding groove (821) that cooperates with the guide rail (811), and the middle is provided with a threaded hole (822) that cooperates with the lead screw (84). The lead screw (84) passes through the fixed block (83), and the turntable (85) is mounted on one end of the lead screw (84); The fixing screw (86) fixes the insert (88) to the upper surface of the threaded block (82), and the locking screw (87) is screwed into the fixing block (83) to lock the lead screw (84).

6. The pleating and forming fixture for woven bags with dust removal function according to claim 1, characterized in that, The hot cutting actuator (3) includes a gantry frame (31), a vertical cylinder (32), a floating blade holder (34), a blade mounting housing (35), a hot cutting blade strip (36), and a guide rail plate (37); The gantry frame (31) is fixedly connected to the outer wall of the frame (1); The vertical cylinder (32) is installed on the crossbeam of the gantry frame (31), and the piston rod (33) of the vertical cylinder (32) is connected to the floating tool holder (34); The hot cutting blade (36) is mounted on the lower end of the blade mounting housing (35), and the heating elements in the blade mounting housing (35) are evenly distributed along the length of the hot cutting blade (36); The guide rail plate (37) is located on the inner side wall of the gantry frame (31), and the sliding grooves at both ends of the floating tool holder (34) move up and down along the guide rail plate (37).

7. The pleating and forming fixture for woven bags with dust removal function according to claim 6, characterized in that, The floating blade holder (34) is connected to a smoothing block by compression springs at both ends. During cutting, the smoothing block presses against the surface of the woven material before the hot cutting blade (36).

8. The pleating and forming fixture for woven bags with dust removal function according to claim 6, characterized in that, The frame (1) has a cutting support surface (14) installed directly below the hot cutting execution mechanism (3), and the cutting support surface (14) has a cutting seam (141) that fits against the hot cutting blade (36); The first negative pressure purification unit (4) includes an air intake (41), a collection box (42), a connecting pipe (43), a first corrugated pipe (44), and a first negative pressure pipeline (45); The air inlet (41) is located at the bottom of the cutting support surface (14), and the center of the air inlet (41) is directly opposite the cutting seam (141) with a vertical spacing of 10mm to 15mm. The collection box (42) traps large particles of molten slag. The side wall of the connecting pipe (43) is equipped with a filter structure (431). The first corrugated pipe (44) receives the collection box through the first negative pressure pipeline (45).

9. The pleating and forming fixture for woven bags with dust removal function according to claim 2, characterized in that, The second negative pressure purification unit (5) includes a suction hood (51), a second corrugated pipe (52), and a second negative pressure pipeline (53); The input end of the suction hood (51) covers the entire pleating area. The bottom surface of the input end of the suction hood (51) is 15mm to 30mm away from the upper surface of the woven material. The output end of the suction hood (51) receives the collection box through the second corrugated pipe (52) and the second negative pressure pipeline (53).

10. The pleating and forming fixture for woven bags with dust removal function according to claim 1, characterized in that, The static elimination unit (6) includes an outer shell (61), an insulating base (62), and a discharge needle (63); The outer shell (61) is fixedly connected to the insulating base (62), and the insulating base (62) is mounted on the frame (1). The discharge needles (63) are evenly arranged on the insulating base (62) with the needle tips facing the air outlet. The rotating antistatic brush (7) includes a motor-driven brush roller (71), conductive nylon bristles (72), and a mounting bracket (73). The mounting bracket (73) is fixedly connected to the frame (1), and the brush roller (71) is rotatably connected to the frame (1). The conductive nylon bristles (72) are located on the outer side wall of the brush roller (71), and the conductive nylon bristles (72) are arranged in a spiral or straight pattern. The gap between the conductive nylon bristles (72) and the upper surface of the braided material is 0.5mm to 1.5mm, and the volume resistivity is 10 Ω·cm. 4 Ω~10 9 Ω; The rotating antistatic brush (7) is located at the front end of the static elimination unit (6) along the conveying direction, and the air outlet of the static elimination unit (6) is higher than the axis of the brush roller (71).

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