A lamination structure for spraying adhesive onto the plastic film of individually packaged diapers.

Abstract

This utility model relates to a pressing structure for applying adhesive to the plastic film of individually packaged diapers. It includes a frame with two guide rollers (one above the other) mounted on it for the plastic film to pass over. A slotted photoelectric switch for sensing the edge of the plastic film is positioned between the two guide rollers. An adhesive spraying head for spraying adhesive onto the plastic film is also mounted on the frame, located below the slotted photoelectric switch. A pressing assembly is positioned between the slotted photoelectric switch and the adhesive spraying head. The pressing assembly includes a support roller positioned below the plastic film and a pair of pressing wheels positioned above the plastic film. The pair of pressing wheels are positioned left and right, corresponding to the edge of the plastic film, and cooperate with the support roller to press down on the edge of the plastic film. This utility model has a reasonable structural design. By setting up the pressing assembly and utilizing the cooperation of the pair of pressing wheels and the support roller to press down on the edge of the plastic film, it effectively reduces the shaking of the two sides of the plastic film during transportation, thereby avoiding interference with the normal detection of the slotted photoelectric switch.

Description

Technical Field

[0001] This utility model relates to a pressure film structure for spraying adhesive onto the plastic film of individually packaged diapers. Background Technology

[0002] When diapers are individually packaged using plastic film, adhesive needs to be sprayed near the edge of one side of the plastic film. Then, the two sides of the plastic film are folded towards the middle and glued to cover the diaper. Because the plastic film is prone to lateral shifting during transport, the adhesive is often unevenly applied, sometimes even spraying outside the plastic film. To address these technical problems, Chinese Patent Publication No. CN 215459339U discloses an adhesive spraying mechanism for individually packaged diapers using plastic film. This patent features a frame with two guide rollers (one above the other) mounted on it. A slotted photoelectric switch for sensing the edge of the plastic film is located between the two guide rollers. The frame also includes an adhesive spraying head for spraying adhesive onto the plastic film and a drive device for moving the spraying head left and right. This patent achieves automatic adjustment of the adhesive spraying position, ensuring that the distance from the spraying position to the edge of the plastic film remains relatively consistent.

[0003] However, in practical use, it was found that the lack of a corresponding pressing structure between the upper and lower guide rollers caused significant wobbling along the edges of the plastic film during transport, thus affecting the normal detection of the slotted photoelectric switch. Therefore, it is necessary to improve this technical problem. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by providing a film pressing structure for spraying adhesive onto the plastic film of individually packaged diapers.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a pressing structure for spraying adhesive onto plastic film in individual packaging of diapers, comprising a frame, on which two guide rollers, one above the other, are installed for the plastic film to pass over, and a slotted photoelectric switch for sensing the edge of the plastic film is provided between the two guide rollers; a spraying head for spraying adhesive onto the plastic film is also installed on the frame, the spraying head being located below the slotted photoelectric switch, and a pressing assembly is provided between the slotted photoelectric switch and the spraying head, the pressing assembly comprising a support roller disposed below the plastic film and a pair of pressing wheels disposed above the plastic film, the pair of pressing wheels being positioned left and right and corresponding to the edge of the plastic film, the pair of pressing wheels cooperating with the support roller to press the edge of the plastic film.

[0006] Furthermore, the axis of the idler roller and the axis of the pressure roller are both parallel to the axis of the guide roller.

[0007] Furthermore, a spacing adjustment component is provided between a pair of pressing rollers, the spacing adjustment component being used to adjust the spacing between the pair of pressing rollers.

[0008] Furthermore, each pressing roller is mounted on an inverted U-shaped wheel frame; the spacing adjustment assembly includes a bidirectional screw arranged parallel above a pair of pressing rollers, with threaded sections of opposite directions at the left and right ends of the bidirectional screw, and a left slider and a right slider respectively screwed to the left and right threaded sections of the bidirectional screw, the left slider and the right slider being connected to the top of the wheel frame of the pair of pressing rollers; a guide rail is arranged parallel above the bidirectional screw, and the left slider and the right slider are slidably engaged with the guide rail.

[0009] Furthermore, a rotating handle is connected to the right end of the bidirectional screw, and the bidirectional screw is driven to rotate by rotating the handle.

[0010] Furthermore, the spacing adjustment assembly also includes a support frame, the guide rail is installed at the bottom of the support frame, and bearing seats for installing bidirectional screws are respectively provided at the left and right ends of the bottom of the support frame.

[0011] Furthermore, the surface of the guide roller is coated with a silicone coating.

[0012] Furthermore, the frame is also provided with an adjustment mechanism located in front of the lower guide roller and used to adjust the tension of the plastic film; the adjustment mechanism includes an adjustment frame, on which there are adjustment rollers A and B arranged one in front of the other. The adjustment frame is inclined with the front lower and the rear higher. Long grooves are opened on the side plates of the adjustment frame. Roller shafts extending into the long grooves are provided at both ends of the adjustment roller B. Threaded holes are opened on the end faces of the roller shafts. Locking screws that are threadedly connected to the threaded holes on the roller shafts are provided on both sides of the adjustment frame.

[0013] Furthermore, racks are fixedly connected to the inner sides of the two side plates of the adjusting frame, and gears that mesh with the racks are sleeved on the roller shafts at both ends of the adjusting roller B.

[0014] Furthermore, a transition guide roller is provided in front of the adjustment mechanism.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention has a reasonable structural design. By setting up a film pressing assembly, a pair of film pressing wheels and rollers are used to press the edge of the plastic film, which effectively reduces the shaking of the two sides of the plastic film during the conveying process, thereby avoiding affecting the normal detection of the slotted photoelectric switch. Attached Figure Description

[0016] Figure 1 This is a front view structural schematic diagram of Embodiment 1 of this utility model;

[0017] Figure 2 This is a side view of the structure of Embodiment 1 of this utility model (the glue spray head is omitted).

[0018] Figure 3This is a front view structural schematic diagram of the spacing adjustment component in Embodiment 1 of this utility model;

[0019] Figure 4 This is a front view structural schematic diagram of Embodiment 2 of this utility model;

[0020] Figure 5 This is a schematic diagram of the adjustment mechanism in Embodiment 2 of this utility model.

[0021] 100-Frame; 110-Guide roller; 120-Groove photoelectric switch; 200-Spray nozzle; 300-Film pressing assembly; 310-Support roller; 320-Film pressing wheel; 321-Wheel frame; 330-Gap adjustment assembly; 331-Bidirectional screw; 332-Left slider; 333-Right slider; 334-Guide rail; 335-Rotating handle; 336-Support frame; 337-Bearing seat; 400-Adjusting mechanism; 410-Adjusting frame; 411-Long groove; 412-Rack; 420-Adjusting roller A; 430-Adjusting roller B; 431-Roller shaft; 440-Locking screw; 450-Gear; 500-Transition guide roller; 600-Plastic film. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example 1: As Figures 1-3As shown, this utility model discloses a film-pressing structure for spraying adhesive onto the plastic film of individually packaged diapers. It is an improvement upon the adhesive spraying mechanism for individually packaged diapers disclosed in Chinese Patent Publication No. CN 215459339U. Specifically, it includes a frame 100, on which are mounted two guide rollers 110, one above the other, for the plastic film 600 to pass over. A slotted photoelectric switch 120 for sensing the edge of the plastic film is positioned between the two guide rollers 110. An adhesive spraying head 210 for spraying adhesive onto the plastic film 600 is also mounted on the frame 100, located below the slotted photoelectric switch 120. This part of the structure is similar to that disclosed in Chinese Patent Publication No. CN 215459339U. The glue spraying mechanism for the individual packaging plastic film of diapers disclosed in 215459339U is the same. The specific improvement of this utility model lies in the following: a film pressing assembly 300 is provided between the slotted photoelectric switch 120 and the glue spraying head 210. The film pressing assembly 300 includes a roller 310 positioned below the plastic film 600 and a pair of pressing wheels 320 positioned above the plastic film 600. The pair of pressing wheels 320 are positioned left and right and correspond to the edges of the plastic film 600. The pair of pressing wheels 320 cooperate with the roller 310 to press down on the edges of the plastic film 600. By setting up the film pressing assembly, and utilizing the cooperation of the pair of pressing wheels and the roller to press down on the edges of the plastic film, the wobbling of the two sides of the plastic film during transportation is effectively reduced, thereby avoiding affecting the normal detection of the slotted photoelectric switch.

[0025] In this embodiment, the axis of the idler roller 310 and the axis of the pressure roller 320 are both parallel to the axis of the guide roller 110.

[0026] In this embodiment, a spacing adjustment component 330 is provided between a pair of pressing rollers 320. The spacing adjustment component 330 is used to adjust the spacing between the pair of pressing rollers 320 to accommodate plastic films of different widths. Specifically: each pressing roller 320 is mounted on an inverted U-shaped wheel frame 321; the spacing adjustment component 330 includes a bidirectional screw 331 arranged parallel above the pair of pressing rollers 320. The left and right ends of the bidirectional screw 331 are provided with threaded sections with opposite directions of rotation. The left and right threaded sections of the bidirectional screw 331 are respectively screwed to a left slider 332 and a right slider 333. The left slider 332 and the right slider 333 are respectively connected to the top of the wheel frame 321 of the pair of pressing rollers 320; a guide rail 334 is arranged parallel above the bidirectional screw 331, and the left slider 332 and the right slider 333 are slidably engaged with the guide rail 334. During operation, the bidirectional screw rotates in either the forward or reverse direction, causing the left and right sliders to move towards or away from each other. The left and right sliders then drive the wheel frame connected to them to move synchronously, which in turn drives the pressing wheel to move synchronously, thereby adjusting the distance between the two pressing wheels.

[0027] In this embodiment, to facilitate manual rotation of the bidirectional screw, a rotating handle 335 is connected to the right end of the bidirectional screw 331, and the bidirectional screw 331 is driven to rotate by rotating the handle 335.

[0028] In this embodiment, the spacing adjustment component 330 further includes a support frame 336, which is connected to the frame 100. The guide rail 334 is installed at the bottom of the support frame 336, and the left and right ends of the bottom of the support frame 336 are respectively provided with bearing seats 337 for installing bidirectional screws 331.

[0029] In this embodiment, the surface of the guide roller 110 is coated with a silicone coating to increase friction and prevent the plastic film from slipping when it comes into contact with the guide roller.

[0030] It should be noted that the structure of the slotted photoelectric switch, the glue spraying head, and the related glue spraying principle, as well as the control relationship between the slotted photoelectric switch and the glue spraying head, are the same as the glue spraying mechanism for the plastic film of the individual packaging of diapers disclosed in Chinese Patent Publication No. CN 215459339U. Therefore, it will not be repeated here.

[0031] Example 2: Figures 4-5 As shown, the difference between this embodiment and Embodiment 1 is that the frame 100 is further provided with an adjustment mechanism 400 located in front of the lower guide roller 110 and used to adjust the tension of the plastic film; the adjustment mechanism 400 includes an adjustment frame 410, on which an adjustment roller A420 and an adjustment roller B430 are arranged one in front of the other and one in back of the other, and the plastic film passes through the upper side of the adjustment roller A420 and the adjustment roller B430; the adjustment frame 410 is inclined with the front lower and the back higher, and long grooves 411 are opened on the side plates of the two sides of the adjustment frame 410; the two ends of the adjustment roller B430 are provided with roller shafts 431 extending into the long grooves 411; the end face of the roller shaft 431 is provided with threaded holes; the two sides of the adjustment frame 410 are provided with locking screws 440 that are threadedly connected to the threaded holes on the roller shaft 431. Because the adjusting frame is tilted, the height of the adjusting roller B can be adjusted by sliding the adjusting roller B along the long groove, thereby adjusting the lifting effect of the adjusting roller B on the plastic film and realizing tension adjustment. After the position of the adjusting roller B is adjusted, it is locked and fixed by the locking screw 440, which is a Torx hand screw; the two ends of the adjusting roller A420 are fixedly connected to the side plates on both sides of the adjusting frame.

[0032] In this embodiment, to ensure synchronous adjustment at both ends of the adjusting roller B, racks 412 are fixedly connected to the inner sides of the two side plates of the adjusting frame 410, and gears 450 that mesh with the racks 412 are sleeved on the roller shafts 431 at both ends of the adjusting roller B 430. The gear and rack at both ends cooperate to ensure the consistency of movement at both ends of the adjusting roller B.

[0033] In this embodiment, a transition guide roller 500 is provided in front of the adjustment mechanism 400. The plastic film passes under the transition guide roller 500.

[0034] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0035] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0036] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A film pressing structure for spraying adhesive onto the plastic film of individually packaged diapers, comprising a frame, two guide rollers (one above the other) for the plastic film to pass over, and a slotted photoelectric switch for sensing the edge of the plastic film is disposed between the two guide rollers; a spraying head for spraying adhesive onto the plastic film is also mounted on the frame, the spraying head being located below the slotted photoelectric switch, characterized in that: A film pressing assembly is provided between the slotted photoelectric switch and the glue spraying head. The film pressing assembly includes a roller disposed below the plastic film and a pair of film pressing wheels disposed above the plastic film. The pair of film pressing wheels are positioned to the left and right and correspond to the edge of the plastic film. The pair of film pressing wheels cooperate with the roller to press the edge of the plastic film.

2. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 1, characterized in that: The axis of the idler roller and the axis of the pressure roller are both parallel to the axis of the guide roller.

3. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 1, characterized in that: A spacing adjustment component is provided between a pair of pressing rollers, which is used to adjust the spacing between the pair of pressing rollers.

4. The film pressing structure for spraying adhesive onto the plastic film of individually packaged diapers according to claim 3, characterized in that: Each pressing roller is mounted on an inverted U-shaped wheel frame; the spacing adjustment assembly includes a bidirectional screw arranged parallel above a pair of pressing rollers, with threaded sections of opposite direction at the left and right ends of the bidirectional screw, and a left slider and a right slider respectively screwed to the left and right threaded sections of the bidirectional screw, the left slider and the right slider being connected to the top of the wheel frame of the pair of pressing rollers respectively; a guide rail is arranged parallel above the bidirectional screw, and the left slider and the right slider are slidably engaged with the guide rail.

5. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 4, characterized in that: The right end of the bidirectional screw is connected to a rotating handle, which drives the bidirectional screw to rotate.

6. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 4, characterized in that: The spacing adjustment assembly also includes a support frame, the guide rail is installed at the bottom of the support frame, and bearing seats for installing bidirectional screws are respectively provided at the left and right ends of the bottom of the support frame.

7. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 1, characterized in that: The surface of the guide roller is coated with a silicone coating.

8. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 1, characterized in that: The frame is also provided with an adjustment mechanism located in front of the lower guide roller and used to adjust the tension of the plastic film; the adjustment mechanism includes an adjustment frame, on which there are an adjustment roller A and an adjustment roller B arranged one in front of the other. The adjustment frame is inclined with the front lower and the rear higher. Long grooves are opened on the side plates of the adjustment frame. Roller shafts extending into the long grooves are provided at both ends of the adjustment roller B. Threaded holes are opened on the end faces of the roller shafts. Locking screws that are threadedly connected to the threaded holes on the roller shafts are provided on both sides of the adjustment frame.

9. The film-pressing structure for spraying adhesive on the independent packaging plastic film of a paper diaper according to claim 8, characterized in that: The inner sides of the two side plates of the adjusting frame are fixedly connected with racks, and gears that mesh with the racks are sleeved on the roller shafts at both ends of the adjusting roller B.

10. The film pressing structure for glue spraying of a diaper independent packaging plastic film according to claim 8, characterized in that: A transition guide roller is provided in front of the adjustment mechanism.

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