Paper diaper packaging bag edge folding and sealing device

Abstract

The present application relates to the packaging bag making, more particularly to the packaging bag hot melt technical field, and disclose a kind of paper diaper packaging bag hemming device, including support plate, the support plate is equipped with processing part, the processing part is equipped with hot melt part, the hot melt part is equipped with control part, the control part is connected with leveling part, the hot melt part is equipped with limit part, the processing part is equipped with clamping part, the hot melt part includes four hot melt plates, four the hot melt plate is integrally connected between, the inner wall of four hot melt plate is fixedly connected with return spring, the inner wall top of hot melt plate is provided with four sliding slot one, by the cooperation of hot melt part and leveling part, before hot melt, the edge of packaging film is rolled and flattened, can eliminate packaging film wrinkle, misplacement problem, different from the defect that existing bending process is prone to wrinkle and offset, improve sealing flatness and sealing stability.

Description

Technical Field

[0001] This invention relates to the manufacture of packaging bags, and more specifically to the field of packaging bag heat sealing technology, specifically a folding and heat sealing device for diaper packaging bags. Background Technology

[0002] In the field of diaper packaging machinery, the edge-folding and heat-sealing device is one of the core pieces of equipment on an automated diaper production line. Its main function is to quickly and stably wrap diapers inside the packaging film and form a complete diaper bag by heat-sealing the edges. This directly affects the packaging efficiency, appearance quality, and sealing performance of the diaper product. With the large-scale and automated development of the diaper industry, the market has placed higher demands on the efficiency and stability of packaging equipment. The performance of the edge-folding and heat-sealing device directly determines the capacity and product qualification rate of the entire production line and is widely used in the automated packaging processes of various diaper manufacturers.

[0003] Currently, the core processes of diaper packaging bag folding and heat sealing devices used in the industry all revolve around single strips of unformed packaging film, resulting in a standardized overall process. Specifically, the packaging film is continuously conveyed via a roller feeding mechanism. During this process, the movable end of the film is forced into a U-shape by rigid or elastic shaping components, forming an upward-facing wrapping cavity. The conveying mechanism then feeds neatly stacked diapers into this U-shaped cavity, with the diapers moving forward synchronously with the packaging film. Next, pressing components on both sides bring the two edges of the U-shaped packaging film closer together and flatten them. Finally, a heat sealing mechanism completes the edge sealing operation. After cooling and shaping, the finished product is cut. The heat sealing mechanism typically employs a single-sided progressive or segmented heat sealing method, using an electric heating element to heat the heat sealing blade, which then transfers heat to seal the packaging film. The entire process relies on the U-shaped bending process to wrap the diaper, representing the most common technical solution used in the industry.

[0004] The existing process relies on a U-bending step for the entire packaging process. The bending angle and force of the packaging film need to be precisely controlled during the bending process. If the adjustment is not made properly, problems such as bending deviation, film stretching and deformation, or surface wrinkles may occur. After U-bending, misalignment may occur when the two sides of the packaging film are attached. Even after flattening, unevenness may still exist in some areas. In addition, the bending process itself will cause uneven stress on the edge of the film, which may easily lead to damage. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a diaper packaging bag edge folding and ironing device, which solves the problems in existing technologies where packaging film bending easily results in offset, wrinkles, damage, and misalignment, thus affecting sealing quality and packaging efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a diaper packaging bag edge-folding and ironing device, comprising a support plate, a processing part mounted on the support plate, an ironing part mounted on the processing part, a control part provided on the ironing part, a leveling part connected to the control part, a limiting part provided on the ironing part, a clamping part mounted on the processing part, the ironing part comprising four ironing plates integrally connected to each other, a return leaf spring fixedly connected to the inner wall of each of the four ironing plates, and four sliding grooves formed at the top of the inner wall of each ironing plate. Each of the four heat-sealing plates has a second heat-sealing groove inside the first heat-sealing groove. Each heat-sealing plate has a heat-sealing knife installed at its bottom. The control unit includes four sliding holes, which are respectively opened on the four heat-sealing plates. Each sliding hole has a contact switch installed on its inner wall. Each heat-sealing knife has a heating rod that is electrically connected to the contact switch inside its interior. The leveling unit includes a sliding roller. Both ends of the sliding roller are fixedly connected to sliding pins. The sliding roller is slidably connected to the first heat-sealing groove. The sliding pins are slidably connected to the second heat-sealing groove. A support arm is fixedly connected to the outer wall of the sliding roller. A pressure roller is fixedly connected to the end of the support arm.

[0009] Preferably, the leveling part further includes a limiting rod, a limiting groove is formed on the first support arm, the limiting rod is fixedly connected between the inner walls of the limiting groove, a second support arm is slidably connected to the inner wall of the limiting groove, the second support arm is slidably sleeved on the limiting rod, a pressure block is fixedly connected to one side of the second support arm, the edge of the pressure block is an arc surface structure, and a second spring is elastically connected between the second support arm and the inner wall of the limiting groove.

[0010] Preferably, the control unit further includes a slide rod, one end of which slides through the hot-pressing plate, and the other end of which slides through the inner wall of the first slide groove and is fixedly connected to a gasket. The gasket has an arc-shaped structure and the inner arc surface of the gasket abuts against the outer wall of the slide roller. A spring is elastically connected between the gasket and the inner wall of the first slide groove. A sliding plate is fixedly connected to the outer arc surface of the gasket, and the sliding plate is slidably connected to the inner wall of the slide hole.

[0011] Preferably, there are four control units and four leveling units. The four control units are arranged on four hot-pressing plates, the four leveling units are arranged on four sliding grooves, the four pressure rollers are in contact with each other, and the four pressure blocks are in contact with each other.

[0012] Preferably, every two of the hot-pressing plates are arranged perpendicularly to each other and staggered, every two of the reset leaf springs are arranged perpendicularly to each other and staggered, every two of the slide grooves are arranged perpendicularly to each other and staggered, the four hot-pressing blades are arranged symmetrically to each other, the four control units are arranged perpendicularly to each other and staggered, and the four leveling units are arranged perpendicularly to each other and staggered.

[0013] Preferably, the processing unit includes a support, which is fixedly connected to a support plate. A hydraulic cylinder is installed on the support, and the movable end of the hydraulic cylinder is fixedly connected to the hot-pressing plate. A distance sensor is installed on the support, and a detection plate is fixedly connected to one side of the outer wall of the hot-pressing plate. The detection plate is aligned with the sensing end of the distance sensor. A processor is installed inside the support, and the processor is electrically connected to the distance sensor.

[0014] Preferably, two take-up rollers are rotatably connected to one side of the support plate, a folding groove is fixedly connected to the side wall of the support plate, a guide table is fixedly connected to one side of the outer wall of the folding groove, and the four sides of the folding groove opening are aligned with four hot-pressing knives.

[0015] Preferably, the limiting part includes a crossbeam, which is a U-shaped structure. The crossbeam is fixedly connected to one side of the outer wall of the hot-pressing board. Guide holes are provided on both ears of the crossbeam. Guide plates are slidably connected to the inner walls of the guide holes. Through holes are also provided on the inner walls of the guide holes. Rollers are rotatably connected between the bottom ends of the guide plates.

[0016] Preferably, the clamping part includes a linear motor, which is mounted on the side of the guide table. A slide is connected to the moving end of the linear motor. A groove is formed on the slide. An adjusting rod slides through the inner wall of the groove. A slider is fixedly connected to the top of the adjusting rod. An electric push rod is embedded in the slider. A clamping piece is fixedly connected to the movable end of the electric push rod. There are two clamping parts, which are symmetrically arranged on both sides of the guide table. The processor is electrically connected to both linear motors and electric push rods.

[0017] Preferably, each of the two winding rollers is provided with a packaging film roll, and a diaper sheet is provided on the movable end of the packaging film roll. The movable ends of the two packaging film rolls meet and pass between the rotating roller and the guide table. The converging ends of the two packaging film rolls are integrally connected with a sealed diaper. The two side edges of the converging ends of the packaging film rolls are respectively clamped on clips.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a folding and ironing device for diaper packaging bags, which has the following beneficial effects:

[0020] 1. This diaper packaging bag edge folding and ironing device, through the cooperation of the ironing part and the flattening part, rolls and elastically flattens the edge of the packaging film before ironing, which can eliminate the problems of wrinkles and misalignment of the packaging film. It is different from the defects of wrinkles and displacement that are easily generated by existing bending processes, and improves the flatness of the sealing edge and the sealing stability.

[0021] 2. The diaper packaging bag edge folding and ironing device, through the linkage between the control unit and the ironing knife, uses a contact switch to directly control the heating rod to turn on and off, realizing precise timing control of heating when pressing and turning off when lifting, avoiding damage and over-melting of the film material due to continuous heating. Compared with the existing constant temperature heating method, it reduces film material loss and defect rate.

[0022] 3. This diaper packaging bag edge folding and ironing device combines four integrated ironing plates with four symmetrically arranged ironing blades to achieve simultaneous ironing of the four-way edges of the packaging film, replacing the existing single-sided progressive or segmented ironing method, shortening the ironing cycle and significantly improving packaging efficiency.

[0023] 4. The diaper packaging bag edge folding and ironing device guides, pre-presses and clamps the double packaging film through the cooperation of the limiting part and the clamping part, so that the packaging film is kept in a straight and aligned state, solving the problems of misalignment and film edge offset in the prior art, and can complete stable wrapping without U-shaped bending.

[0024] 5. This diaper packaging bag edge folding and ironing device, through the cooperation of double take-up rollers and guide table, adopts double film straight conveying to wrap diaper sheets, eliminating the existing U-shaped bending process, avoiding film stretching, displacement and damage caused by bending from the source, simplifying the process flow, and improving the stability and versatility of equipment operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the processing part of the present invention;

[0027] Figure 3 This is a schematic diagram of the distance sensor of the present invention;

[0028] Figure 4 For the present invention Figure 1 Enlarged view of A in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the limiting part of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the hot-pressing board of the present invention;

[0031] Figure 7 For the present invention Figure 5Enlarged view of B in the middle;

[0032] Figure 8 This is a diagram showing the fit between the heat-sealing part and the control part of the present invention;

[0033] Figure 9 This is a diagram showing the fit between the control unit and the leveling unit of the present invention;

[0034] Figure 10 This is a schematic diagram of the leveling part of the present invention.

[0035] In the diagram: 1. Support plate; 2. Machining section; 21. Support; 22. Hydraulic cylinder; 23. Distance sensor; 24. Take-up roller; 25. Folding groove; 26. Guide table; 3. Hot-pressing section; 31. Hot-pressing plate; 32. Slide 1; 33. Slide 2; 34. Reset leaf spring; 35. Detection plate; 36. Hot-pressing knife; 4. Control section; 41. Slide rod; 42. Shim; 43. Spring 1; 44. Slide plate; 45. Slide hole; 46. Contact switch; 5. Leveling section; 51. Sliding roller; 52. Sliding pin; 53. Support arm one; 54. Pressure roller; 55. Limiting rod; 56. Support arm two; 57. Pressure block; 58. Spring two; 6. Limiting part; 61. Crossbeam; 62. Guide hole; 63. Guide plate; 64. Through hole; 65. Rotating roller; 7. Clamping part; 71. Linear motor; 72. Slide seat; 73. Groove; 74. Adjusting rod; 75. Slider; 76. Clamping piece; 8. Packaging film roll; 9. Diaper sheet; 10. Sealed diaper. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1 - Figure 10 This invention provides a diaper packaging bag edge folding and ironing device, including a support plate 1, a processing part 2 installed on the support plate 1, an ironing part 3 installed on the processing part 2, a control part 4 provided on the ironing part 3, a leveling part 5 connected to the control part 4, a limiting part 6 provided on the ironing part 3, a clamping part 7 installed on the processing part 2, the ironing part 3 includes four ironing plates 31, the four ironing plates 31 are integrally connected, a reset leaf spring 34 (65Mn manganese steel leaf spring) is fixedly connected to the inner wall of each of the four ironing plates 31, four sliding grooves 32 are opened on the top of the inner wall of the ironing plate 31, each sliding groove 32 is opened with a second sliding groove 33, an ironing knife 36 is installed on the bottom of each of the four ironing plates 31, and a detection plate 35 is fixedly connected to one side of the outer wall of the ironing plate 31.

[0038] In use, the hydraulic cylinder 22 drives the four integrated heat-sealing plates 31 to move downward, which in turn drives the heat-sealing knife 36 to simultaneously press and heat the four edges of the double packaging film. The first slide groove 32 and the second slide groove 33 provide sliding guidance for the leveling part 5.

[0039] In this invention, the control unit 4 includes four sliding holes 45, which are respectively opened on four hot-pressing plates 31. Each sliding hole 45 has a contact switch 46 (TM-1703 mechanical contact) installed on its inner wall. Each hot-pressing blade 36 has a heating rod (single-head stainless steel φ12×200mm / 600W, 220V) that is electrically connected to the contact switch 46. The control unit 4 also includes a sliding rod 41. One end of the sliding rod 41 slides through the hot-pressing plate 31, and the other end slides through the inner wall of the slide groove 32 and is fixedly connected to a gasket 42. The gasket 42 has an arc-shaped structure and its inner arc surface abuts against the outer wall of the sliding roller 51. A spring 43 (SWCφ8×30mm) is elastically connected between the gasket 42 and the inner wall of the slide groove 32. A sliding plate 44 is fixedly connected to the outer arc surface of the gasket 42 and slides on the inner wall of the sliding hole 45.

[0040] When in use, the sliding roller 51 descends and contacts the diaper pad 9, thereby pushing the pad 42 and the sliding rod 41 with a reaction force, driving the slide plate 44 to slide along the sliding hole 45 and triggering the contact switch 46 to close, so that the heating rod in the heat-sealing knife 36 is energized and heated. After the heat-sealing is completed, the spring 43 pushes the pad 42 and the slide plate 44 to reset, the contact switch 46 is opened, and the heating rod stops working, realizing precise control of the heat-sealing sequence.

[0041] Furthermore, the leveling section 5 includes a sliding roller 51, with sliding pins 52 fixedly connected to both ends of the sliding roller 51. The sliding roller 51 is slidably connected to the first sliding groove 32, and the sliding pins 52 are slidably connected to the second sliding groove 33. A support arm 53 is fixedly connected to the outer wall of the sliding roller 51, and a pressure roller 54 is fixedly connected to the end of the support arm 53. The leveling section 5 also includes a limiting rod 55. A limiting groove is formed on the support arm 53, and the limiting rod 55 is fixedly connected between the inner walls of the limiting groove. A support arm 56 is slidably connected to the inner wall of the limiting groove, and the support arm 56 is slidably sleeved on the limiting rod 55. A pressure block 57 is fixedly connected to one side of the support arm 56, and the edge of the pressure block 57 is an arc surface structure. A spring 58 (SWCφ8×30mm) is elastically connected to the inner wall of the limiting groove. There are four control parts 4 and four leveling parts 5. The four control parts 4 are set on the four hot-pressing plates 31, and the four leveling parts 5 are set on the four slide grooves 32. The four pressure rollers 54 are in contact with each other, and the four pressure blocks 57 are in contact with each other. Every two hot-pressing plates 31 are perpendicular to each other and staggered. Every two reset plate springs 34 are perpendicular to each other and staggered. Every two slide grooves 32 are perpendicular to each other and staggered. The four hot-pressing knives 36 are symmetrically arranged. The four control parts 4 are perpendicular to each other and staggered. The four leveling parts 5 are perpendicular to each other and staggered.

[0042] In use, the four sliding rollers 51 slide along the first sliding groove 32 and the sliding pin 52 slides along the second sliding groove 33, driving the first support arm 53 and the pressure roller 54 to simultaneously roll and flatten the packaging film above. The second support arm 56 slides along the limiting rod 55, and the second spring 58 pushes the pressure block 57 to elastically flatten the corner position of the packaging film, eliminating wrinkles and misalignment, and improving the flatness and firmness of the sealing edge.

[0043] In this embodiment, the processing unit 2 includes a support 21, which is fixedly connected to the support plate 1. A hydraulic cylinder 22 (ROB200×300-MF1, stroke 300mm, thrust ≥20kN) is installed on the support 21. The movable end of the hydraulic cylinder 22 is fixedly connected to the hot-pressing plate 31. A distance sensor 23 (E3Z-LS63 long-distance photoelectric type, detection distance 0.1~3m) is installed on the support 21. The detection plate 35 is aligned with the sensing end of the distance sensor 23. A processor (Siemens S7-200SMARTCPUST40) is installed inside the support 21. The processor is electrically connected to the distance sensor 23. Two take-up rollers 24 are rotatably connected to one side of the support plate 1. A folding groove 25 is fixedly connected to the side wall of the support plate 1. A guide table 26 is fixedly connected to one side of the outer wall of the folding groove 25. The four sides of the groove opening of the folding groove 25 are aligned with four hot-pressing knives 36.

[0044] In use, the two take-up rollers 24 release the packaging film simultaneously. The two films meet at the guide table 26 to wrap the diaper sheet 9. The distance sensor 23 collects the displacement signal of the heat-sealing plate 31 through the detection plate 35 and transmits it to the processor to control the timing action of the clamping part 7. The folding groove 25 provides positioning for the packaging film below to prevent displacement or misalignment during the heat-sealing process.

[0045] It is worth noting that the limiting part 6 includes a crossbeam 61, which is a U-shaped structure. The crossbeam 61 is fixedly connected to one side of the outer wall of the hot-pressing plate 31. Guide holes 62 are provided on both ears of the crossbeam 61. Guide plates 63 are slidably connected to the inner walls of the guide holes 62. Through holes 64 are also provided on the inner walls of the guide holes 62. The through holes 64 allow the central axis of the rotating roller 65 to pass through without obstruction, ensuring that the crossbeam 61 can descend to the guide table 26 and be flush with the hot-pressing plate 31. The bottom ends of the guide plates 63 are rotatably connected to the rotating roller 65 (silicone-coated guide roller φ30×150mm).

[0046] During use, the crossbeam 61 moves down synchronously with the hot-pressing plate 31, the guide hole 62 slides along the guide plate 63, and the rotating roller 65 pre-presses and guides the double packaging film to keep the film edge stable and avoids deviation, wrinkles and damage.

[0047] It is worth noting that the clamping part 7 includes a linear motor 71 (MLFC-45, thrust 450N, speed 0~1m / s). The linear motor 71 is mounted on the side of the guide table 26. A slide 72 is connected to the moving end of the linear motor 71. A groove 73 is provided on the slide 72. An adjusting rod 74 slides through the inner wall of the groove 73. A slider 75 is fixedly connected to the top of the adjusting rod 74. An electric push rod (XTL100-12V-50mm) is embedded in the slider 75. A clamping piece is fixedly connected to the movable end of the electric push rod. 76 (PU anti-slip sheet), there are two clamping parts 7, which are symmetrically arranged on both sides of the guide table 26. The processor is electrically connected to two linear motors 71 and electric push rods. Packaging film rolls 8 are provided on both winding rollers 24. Diaper sheets 9 are provided on the movable ends of the packaging film rolls 8. The movable ends of the two packaging film rolls 8 intersect and pass between the rotating roller 65 and the guide table 26. The intersecting ends of the two packaging film rolls 8 are integrally connected to the sealing diaper 10. The two sides of the intersecting ends of the packaging film rolls 8 are clamped on the clamping pieces 76 respectively.

[0048] When in use, as the heat sealing plate 31 descends, the distance between the detection plate 35 and the distance sensor 23 increases, triggering the linear motor 71 to drive the slide 72 to move towards the rotating roller 65. The electric push rod extends and releases the clamping piece 76. The height of the slider 75 is adaptively matched to the height of the packaging film roll 8 by the adjusting rod 74. When the heat sealing plate 31 rises, the distance between the detection plate 35 and the distance sensor 23 decreases. The electric push rod drives the clamping piece 76 to clamp the two edges of the packaging film, keeping the double film aligned. The linear motor 71 drives the slide 72 away from the rotating roller 65, pulling the heat-sealed diaper 10 out of the folding groove 25 and causing the diaper 10 to squeeze the rotating roller 65, causing the rotating roller 65 to rise along the guide hole 62. The diaper 10 is then fed onto the guide table 26.

[0049] In use, the diaper packaging bag folding and ironing device places the diaper sheet 9 on the lower packaging film. Clamping tabs 76 hold the confluence of the packaging film roll 8, providing conveying power. When the diaper sheet 9 is conveyed to the opening of the folding groove 25, the hydraulic cylinder 22 pushes the ironing plate 31 downwards. The ironing plate 31 pushes the upper packaging film downwards, pressing the diaper sheet 9 and the lower packaging film together into the folding groove 25. At this point, with the groove opening as the center line, the thickness of the upper and lower diaper sheets 9 is the same. The ironing plate 31 continues to descend. The support arm 53 is initially tilted. The pressure roller 54 presses the upper film and, under the reaction force, begins to drive the sliding roller 51 to slide along the sliding groove 32. The four pressure rollers 54 simultaneously flatten the upper film in four directions. Block 57 simultaneously replenishes and flattens the upper film, and under pressure, it can expel excess air between the upper and lower films and the diaper sheet 9. When the pressure roller 54 slides to the reset spring 34, it is limited and begins to descend along the edge of the upper film. The support arm 53 gradually moves from inclined to vertical. The slide plate 44 slides along the sliding hole 45 to trigger the contact switch 46, turn on the heating rod and cause the heat sealing knife 36 to heat up. After the heat sealing plate 31 is pressed against the edge of the folding groove 25, the heat sealing knife 36 performs heat sealing work on the four edges of the upper and lower films. The heat sealing edge of the film is located in the middle of the diaper sheet 9 to ensure the uniformity of the upper and lower films. Moreover, the air in the film is squeezed out in advance by the pressure of the pressure roller 54. After sealing, there is less air in the film, which will not cause a lot of bulging and swelling problems.

[0050] As the heat sealing plate 31 moves the detection plate 35 away from the distance sensor 23, the processor starts the linear motor 71 to reset and the electric push rod extends to release the clamping piece 76 from the packaging film. After the heat sealing is completed, the heat sealing plate 31 rises, and the distance between the detection plate 35 and the distance sensor 23 decreases. The processor further starts the linear motor 71 and the electric push rod, causing the clamping piece 76 to clamp the packaging film and pull it towards the guide table 26 to deliver the sealed diaper 10. After the sealed diaper 10 passes through the rotating roller 65, the rotating roller 65 sinks under its own weight and presses down on the intersection of the packaging film again to avoid wrinkles during heat sealing.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A folding and ironing device for diaper packaging bags, comprising a support plate (1), characterized in that: A processing part (2) is installed on the support plate (1), a hot-pressing part (3) is installed on the processing part (2), a control part (4) is provided on the hot-pressing part (3), a leveling part (5) is connected to the control part (4), a limiting part (6) is provided on the hot-pressing part (3), a clamping part (7) is installed on the processing part (2), the hot-pressing part (3) includes four hot-pressing plates (31), the four hot-pressing plates (31) are integrally connected, and the inner walls of the four hot-pressing plates (31) are all fixedly connected with composite The inner wall of the hot-pressing plate (31) has four sliding grooves (32) at the top, and each sliding groove (32) has a second sliding groove (33). Each of the four hot-pressing plates (31) has a hot-pressing knife (36) installed at the bottom. The control unit (4) includes four sliding holes (45), which are respectively opened on the four hot-pressing plates (31). Each sliding hole (45) has a contact switch (46) installed on its inner wall. Each hot-pressing knife (36) has a... The heating rod is electrically connected to the contact switch (46). The leveling part (5) includes a sliding roller (51). The two ends of the sliding roller (51) are fixedly connected to sliding pins (52). The sliding roller (51) is slidably connected to the first sliding groove (32). The sliding pins (52) are slidably connected to the second sliding groove (33). The outer wall of the sliding roller (51) is fixedly connected to the first support arm (53). The end of the first support arm (53) is fixedly connected to the pressure roller (54). The control part (4) also includes a sliding rod (41). One end of the slide rod (41) slides through the hot-pressing plate (31), and the other end of the slide rod (41) slides through the inner wall of the slide groove (32) and is fixedly connected to a pad (42). The pad (42) has an arc-shaped structure and the inner arc surface of the pad (42) abuts against the outer wall of the slide roller (51). A spring (43) is elastically connected between the pad (42) and the inner wall of the slide groove (32). A slide plate (44) is fixedly connected to the outer arc surface of the pad (42). The slide plate (44) is slidably connected to the inner wall of the slide hole (45).

2. The folding and ironing device for diaper packaging bags according to claim 1, characterized in that: The leveling part (5) also includes a limiting rod (55). A limiting groove is provided on the first support arm (53). The limiting rod (55) is fixedly connected between the inner walls of the limiting groove. The inner wall of the limiting groove is slidably connected to the second support arm (56). The second support arm (56) is slidably sleeved on the limiting rod (55). A pressure block (57) is fixedly connected to one side of the second support arm (56). The edge of the pressure block (57) is an arc surface structure. A second spring (58) is elastically connected between the second support arm (56) and the inner wall of the limiting groove.

3. The folding and ironing device for diaper packaging bags according to claim 2, characterized in that: There are four control units (4) and four leveling units (5). The four control units (4) are set on four hot-pressing plates (31), and the four leveling units (5) are set on four sliding grooves (32). The four pressure rollers (54) are in contact with each other, and the four pressure blocks (57) are in contact with each other.

4. The folding and ironing device for diaper packaging bags according to claim 3, characterized in that: Each pair of the hot-pressing plates (31) are arranged perpendicularly to each other and staggered, each pair of the reset plate springs (34) are arranged perpendicularly to each other and staggered, each pair of the slide grooves (32) are arranged perpendicularly to each other and staggered, the four hot-pressing knives (36) are arranged symmetrically to each other, the four control parts (4) are arranged perpendicularly to each other and staggered, and the four leveling parts (5) are arranged perpendicularly to each other and staggered.

5. The folding and ironing device for diaper packaging bags according to claim 1, characterized in that: The processing unit (2) includes a support (21), which is fixedly connected to the support plate (1). A hydraulic cylinder (22) is installed on the support (21). The movable end of the hydraulic cylinder (22) is fixedly connected to the hot-pressing plate (31). A distance sensor (23) is installed on the support (21). A detection plate (35) is fixedly connected to one side of the outer wall of the hot-pressing plate (31). The detection plate (35) is aligned with the sensing end of the distance sensor (23). A processor is installed inside the support (21). The processor is electrically connected to the distance sensor (23).

6. The folding and ironing device for diaper packaging bags according to claim 5, characterized in that: Two take-up rollers (24) are rotatably connected to one side of the support plate (1). A folding groove (25) is fixedly connected to the side wall of the support plate (1). A guide table (26) is fixedly connected to one side of the outer wall of the folding groove (25). The four sides of the groove opening of the folding groove (25) are aligned with four hot-pressing knives (36).

7. The folding and ironing device for diaper packaging bags according to claim 6, characterized in that: The limiting part (6) includes a crossbeam (61), which is a U-shaped structure. The crossbeam (61) is fixedly connected to one side of the outer wall of the hot-pressing plate (31). Guide holes (62) are provided on both ears of the crossbeam (61). Guide plates (63) are slidably connected to the inner walls of the guide holes (62). Through holes (64) are also provided on the inner walls of the guide holes (62). Rollers (65) are rotatably connected between the bottom ends of the guide plates (63).

8. The folding and ironing device for diaper packaging bags according to claim 6, characterized in that: The clamping part (7) includes a linear motor (71), which is mounted on the side of the guide table (26). A slide (72) is connected to the moving end of the linear motor (71). A groove (73) is provided on the slide (72). An adjusting rod (74) slides through the inner wall of the groove (73). A slider (75) is fixedly connected to the top of the adjusting rod (74). An electric push rod is embedded in the slider (75). A clamping piece (76) is fixedly connected to the movable end of the electric push rod. There are two clamping parts (7), which are symmetrically arranged on both sides of the guide table (26). The processor is electrically connected to both linear motors (71) and electric push rods.

9. A diaper packaging bag edge-folding and ironing device according to claim 7, characterized in that: Both of the two winding rollers (24) are provided with packaging film rolls (8), and diaper sheets (9) are provided on the movable ends of the packaging film rolls (8). The movable ends of the two packaging film rolls (8) intersect and pass between the rotating roller (65) and the guide table (26). The intersecting ends of the two packaging film rolls (8) are integrally connected with sealed diapers (10). The two sides of the intersecting ends of the packaging film rolls (8) are respectively clamped on the clips (76).

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