Film packaging device of soft tissue paper packaging machine

Abstract

The present invention relates to the field of soft tissue paper packaging machines and discloses a film packaging device of the soft tissue paper packaging machine, comprising a turntable, upper and lower pressing plates, a protective wall, and an movable lower inserting plate or upper and lower inserting plates, which are used to fold the side edges of the film at a feeding station; the upper and lower pressing plates are both provided with a first edge and a second edge, and the first edge and the second edge are staggered to form a gap, and the gap formed by the upper and lower pressing plates is used for the corresponding lower inserting plate or the upper and lower inserting plates to enter and exit the gap; the present invention cooperates with the three links of the gap, the inserting plate, the convex strip and the limiting strip, so that the convex strip replaces the inserting plate during the transfer process, and the limiting strip replaces the inserting plate in the heat-sealed state, so that the produced soft tissue paper is always in a dense state, thereby ensuring its finished product rate.

Description

Technical Field

[0001] The present invention relates to the field of soft tissue paper packaging machines, and in particular to an improved invention of a film packaging device of a soft tissue paper packaging machine. Background Art

[0002] In the prior art, soft tissue paper towels are wrapped with a layer of plastic film. The cut tissue paper is first pushed toward the pressure plate at the feeding station. During the pushing process, the plastic film will wrap one end of the tissue paper, and then the other end will be folded by the insertion action of the lower insert plate or the upper and lower insert plates. The folded plastic film wrapped around the tissue paper is then heat-sealed at the sealing station and finally discharged at the discharging station. However, in order to prevent the density of the wrapped tissue paper and prevent the film from loosening, folding is very important. The edges of the upper and lower pressure plates and the lower insert plate or the upper and lower insert plates cannot generate friction during folding. Then, this will undoubtedly cause a gap in the folded plastic film. Once this gap is generated, the packaging density of the tissue paper cannot be guaranteed. This problem has been plaguing the entire soft tissue packaging industry. In addition to this problem, there is another problem, that is, when the folded tissue paper is to enter the next sealing process, the folded plastic film cannot be loose during the rotation of the turntable. However, since the edges of the upper and lower pressure plates cannot contact the inner wall of the protective wall, the folded tissue paper will also become loose during the transfer process. In addition, when the heat sealing head seals the packaging film at the time of sealing, the packaging film will also become loose. Summary of the Invention

[0003] In view of this, the technical problem solved by the present invention is to provide a film packaging device for a soft tissue paper packaging machine that ensures the density of soft tissue paper packaging and prevents the film from loosening. In view of the shortcomings of the prior art, the present invention solves the problems through the following technical solutions:

[0004] A film packaging device for a soft tissue paper packaging machine, comprising

[0005] The turntable is driven by a power source to rotate and stop at each station, including at least a feeding station, a sealing station and a discharging station;

[0006] The upper and lower pressing plates are set on the turntable and can move relative to each other through the rotation of the turntable;

[0007] The protective wall is set between the sealing station and the feeding station to prevent the film of the finished product wrapped with soft tissue paper from loosening during the transfer process;

[0008] A movable lower insert or upper and lower inserts for folding the sides of the film at the feed station;

[0009] The upper and lower pressing plates are both provided with a first edge and a second edge. The first edge and the second edge are staggered to form a gap. The gap formed by the upper and lower pressing plates allows the corresponding lower insert plate or upper and lower insert plates to enter and exit the gap.

[0010] A first distance is formed between the first edges of the upper and lower pressing plates and the corresponding second edges of the upper and lower pressing plates;

[0011] When the lower insert plate or the upper and lower insert plates are inserted into the notch, the inner edge of the lower insert plate or the upper and lower insert plates forms a second distance from the second edge of the corresponding upper and lower pressing plates;

[0012] The length of the second distance is less than that of the first distance. The insert plate can get as close to and compress the tissue paper as possible for folding, so that the center of the turntable and the inner edge of the lower insert plate or the upper and lower insert plates form a second distance, preventing the folded film from becoming loose. Of course, the compression here does not necessarily deform the tissue paper, as long as the film does not become loose. In addition, during the transfer process, the convex strips replace the role of the insert plate to ensure that the film does not become loose during the transfer process in the folded state. Finally, the role of the limit strips is used to ensure that the film does not become loose during heat sealing. The three links are linked together to keep the soft tissue paper in a dense state and ensure its yield rate.

[0013] Preferably, the sealing station includes a movable sealing plate for heat-sealing the folded film; it is also equipped with a plurality of limit bars to maintain the film and tissue paper in a compacted state during sealing. The limit bars ensure that the soft tissue paper can be positioned at a second distance from the center of the turntable after being released from the insert plate, ensuring that the folded plastic outer packaging does not become loose.

[0014] Preferably, the limiting strip can be an elastic strip placed below the sealing plate, or one end of the strip can be connected to a spring. When the strip is elastic, it can be deformed to the greatest extent possible. Since paper towels are soft and compressible, the elastic strip can match the compressed shape of the paper towel.

[0015] Preferably, the inner side of the guard wall is provided with several convex strips matching the notches for connecting the second distance of paper towel delivery to prevent the film from loosening. In this way, the outer surface of the convex strip and the center of the turntable form a second distance, which is used to replace the role of the insert plate during the delivery of paper towels.

[0016] Preferably, limit blocks are provided on the upper and lower pressure plates to limit the folding space of the paper towels.

[0017] Preferably, the upper pressing plate is arranged on the guide rail via a pressing plate bracket and moves on the guide rail via a power source.

[0018] Preferably, the sealing plate is provided with a retaining groove that matches the size of the limiting strip, so as not to affect the sealing effect.

[0019] Preferably, an opening is provided at the end of the guard wall for the sealing plate of the sealing station to enter and exit. One end of the limit strip is connected to the eaves of the guard wall, and the other end is connected to the wall body. In this way, when the plastic film wrapped around the paper towel coming out of the guard wall is free from the restriction of the convex strip, it can be received by the limit strip to ensure that the film will not loosen during heat sealing.

[0020] By adopting the above technical solution, the present invention ensures that after the paper towel is transferred to the pressure plate, the notch prevents the insert from being restricted by the first edge. The insert can move beyond the first edge to the maximum extent possible, approaching and compressing the paper towel for folding. The second edges of the upper and lower pressure plates form a second distance from the inner edges of the lower insert or the upper and lower inserts. This ensures that the folded plastic film is folded while compacting the paper towel, preventing the film from becoming loose. Of course, the compression herein does not necessarily require significant deformation of the paper towel; it only requires that the film not become loose. During the transfer process, the ridges are retained within the notch, thus replacing the insert to ensure that the film remains folded, ensuring that the folded film does not become loose during transfer. Finally, the limiting strips act as a replacement for the insert, limiting the dispersal of the packaged paper towel when it leaves the force of the ridges, thereby ensuring that the film does not become loose during heat sealing. The three links are closely linked to each other. During the transfer process, the convex strips replace the inserts. In the heat-sealing state, the limit strips replace the inserts, so that the soft tissue paper produced is always in a dense state, ensuring its finished product rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural diagram of the upper and lower pressure plates;

[0023] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0024] Figure 4 yes Figure 2 A partial enlarged view of B. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1:

[0027] The film packaging device of this soft tissue packaging machine is as follows Figure 1-4 Shown, including

[0028] The turntable 6 is driven to rotate by a power source and stops at various stations, including at least a feeding station 2, a sealing station 3, and a discharging station 4; the feeding station 2 is the working position where the packaging film and tissue paper enter the area, the sealing station 3 is the working position where the folded packaging film and tissue paper are heat-sealed, and the discharging station 4 is the working position where the sealed packaging film and tissue paper can be discharged;

[0029] The upper and lower pressing plates 5 are arranged on a turntable 6. The rotation of the turntable 6 drives the pressing plates 5 to rotate and stop at each work station. The two pressing plates 5 can move relative to each other, so that the plastic film and paper towels wrapped around the paper towels can be clamped. At least one of the two pressing plates 5 is connected to a power source. The power source here is not the focus. Technicians in this field can choose to use, such as a cylinder or a motor, as long as external force is applied to the pressing plate 5.

[0030] The protective wall 7 is arranged between the sealing station 3 and the feeding station 2 and on the outside of the turntable 6, and is fixed to prevent the film of the finished product wrapped with the soft tissue paper from becoming loose during the transfer process;

[0031] The movable lower plug plate or upper and lower plug plates 8 are used to fold the side of the film at the feeding station 2. If the upper and lower plug plates 8 are set, the two plug plates 8 can share a power source or set power sources separately. The use of these power sources is also a conventional choice in this field; if the equipment has no upper plug plate, only the lower plug plate 8, when the pressure plate 5 is rotated by the turntable 6, the edge of the guard wall 7 blocks the plastic film, which also plays a role in folding the other side. Of course, this can be selected according to the user's machine model.

[0032] The upper and lower pressing plates 5 are both provided with a first edge 9 and a second edge 10. The first edge 9 and the second edge 10 are staggered to form a gap 11. The gap 11 formed by the upper and lower pressing plates 5 is for the corresponding lower inserting plate 8 or the upper and lower inserting plates 8 to enter and exit the gap;

[0033] When the lower insert plate or the upper and lower insert plates are not inserted into the corresponding notches, the second edges of the upper and lower pressing plates 5 form a first distance L1 with the corresponding first edges of the upper and lower pressing plates 5;

[0034] When the lower insert plate or the upper and lower insert plates are inserted into the notch, the second edge of the upper and lower pressure plates 5 forms a second distance L2 with the inner edge of the corresponding lower insert plate or the upper and lower insert plates. The second distance L2 is less than the first distance L1. The formation of the notch maximizes the proximity of the inner edge of the insert plate to the paper towel, thus preventing the paper towel from becoming loose during folding.

[0035] This embodiment provides a technical solution to prevent looseness in foldable form;

[0036] Example 2:

[0037] The embodiment includes all the technical features of Example 1, mainly that the sealing station 3 includes an active sealing plate 31 for heat-sealing the folded packaging film covering the tissue paper; a plurality of limit strips are also provided, which are not shown in the figure. The purpose of the limit strips is to maintain a compacted state between the film and the tissue paper and to perform sealing in this state. The limit strips can ensure that the soft tissue paper can form a second distance L2 between the center of the turntable 6 and the limit strips after it is separated from the insert plate, so that the folded plastic outer packaging will not be loose.

[0038] This embodiment provides a technical solution to prevent loosening during sealing.

[0039] Optionally, the limit strip can be an elastic strip-shaped object, which is arranged below the sealing plate 31; or one end of the strip-shaped object is connected to a spring. When the strip is elastic, it can be deformed to the greatest extent. Since the paper towel is in a soft and compressible state, the elastic strip can match the compressed shape of the paper towel. When the paper towel passes through the limit strip, the limit strip is deformed and maintains close contact with the packaging film outside the paper towel during the process, so that the packaging film remains pressed against the outer surface of the paper towel, thereby ensuring that the paper towel will not separate from the packaging film. The strip here can be connected to the body at one end and to the protective wall 7 at the other end. A slot can be provided on the protective wall 7 to allow the limit strip to contact the outer packaging of the packaged paper towel, or an independent fixing structure can be provided.

[0040] As an option, an opening 72 is provided at the end of the guard wall 7, and the opening 72 is for the sealing plate 31 of the sealing station 3 to enter and exit. One end of the limit strip is connected to the eaves of the guard wall 7, and the other end is connected to the wall body. In this way, when the packaging film wrapped around the paper towel coming out of the guard wall 7 is free from the restriction of the convex strip, it can be taken over by the limit strip to ensure that the packaging film will not loosen before the heat sealing is completed. The radius from the bottom of the limit strip to the center of the turntable 6 is smaller than the radius from the edge of the paper towel to the center of the turntable 6 after the two pressure plates 5 clamp the paper towel. Therefore, when the pressure plate 5 reaches the position of the limit strip, the limit strip will be deformed. In this way, since the limit strip can be an elastic component or a component with a spring connected to the end of the limit strip, the elastic setting can ensure that the paper towel will not be crushed by the limit strip.

[0041] Example 3:

[0042] In addition to all the technical features of Example 1, the inner side of the protective wall 7 is provided with a plurality of ridges 71 matching the notches, which are used to connect the second distance of paper towel transportation to prevent the film from loosening. In this way, the outer surface of the ridge and the center of the turntable 6 form a second distance, which is used to replace the effect of the insert plate not returning to its position during the transportation of the paper towel, because the insert plate not returning to its position can keep the folded film from being loose, so that it can be ensured that the folded paper towel will not become loose during the transfer process.

[0043] Optionally, the upper and lower pressing plates 5 of the present invention may be provided with limit blocks for limiting the folding space of the paper towels.

[0044] The upper pressing plate 5 of the present invention is arranged on the guide rail through a pressing plate bracket and moves on the guide rail through a power source.

[0045] As an option, the sealing plate 31 is provided with a retaining groove that matches the size of the limiting strip, which will not affect the sealing effect.

[0046] Example 4:

[0047] The technical features in Example 1, plus the technical features of Example 2 and Example 3.

[0048] The turntable 6 is driven to rotate by a power source and stops at various stations, including at least a feeding station 2, a sealing station 3, and a discharging station 4; the feeding station 2 is the working position where the packaging film and tissue paper enter the area, the sealing station 3 is the working position where the folded packaging film and tissue paper are heat-sealed, and the discharging station 4 is the working position where the sealed packaging film and tissue paper can be discharged;

[0049] The upper and lower pressing plates 5 are arranged on a turntable 6. The pressing plates 5 are driven by the turntable 6 to rotate and stop at each work station. The two pressing plates 5 can move relative to each other, so that the plastic film and paper towels wrapped around the paper towels can be clamped. At least one of the two pressing plates 5 is connected to a power source. The power source here is not the focus. Technicians in this field can choose to use, such as a cylinder or a motor, as long as external force is applied to the pressing plate 5.

[0050] The protective wall 7 is arranged between the sealing station 3 and the feeding station 2 and on the outside of the turntable 6, and is fixed to prevent the film of the finished product wrapped with the soft tissue paper from loosening during the transfer process;

[0051] The movable lower insert or upper and lower inserts 8 are used to fold the sides of the film at the feed station 2. The inserts can share a power source or have separate power sources. The use of these power sources is also a conventional choice in the field.

[0052] The upper and lower pressing plates 5 are both provided with a first edge 9 and a second edge 10. The first edge 9 and the second edge 10 are staggered to form a gap 11. The gap 11 formed by the upper and lower pressing plates 5 is for the corresponding lower insert plate or the upper and lower insert plates 8 to enter and exit the gap;

[0053] When the lower insert plate or the upper and lower insert plates are not inserted into the corresponding notches, the second edges of the upper and lower pressing plates 5 form a first distance L1 with the first edges of the upper and lower pressing plates 5;

[0054] When the lower insert plate or the upper and lower insert plates are inserted into the notch, the second edge of the upper and lower pressure plates 5 forms a second distance L2 from the inner edge of the lower insert plate or the upper and lower insert plates. The formation of the notch can maximize the proximity of the inner edge of the insert plate to the paper towel, thus preventing the paper towel from becoming loose when folded.

[0055] The inner side of the protective wall 7 is provided with a plurality of ridges 71 matching the notches, which are used to connect the paper towels for conveying at a second distance to prevent the film from loosening. In this way, the outer surface of the ridges 71 and the second edge form a second distance, which is used to replace the role of the plug when the paper towels are not returned to their original position during the conveying process. Therefore, the plug can still keep the folded film from being loose even if the plug is not returned to its original position. In this way, it can be ensured that the folded paper towels will not become loose during the transfer process.

[0056] Sealing station 3 includes a movable sealing plate 31 for heat-sealing the folded film. It also features several stoppers to maintain a compacted seal between the film and tissue paper. These stoppers ensure that the soft tissue paper, after being released from the insert, maintains a second edge and a second distance from the stoppers, ensuring that the folded plastic outer packaging does not become loose. The upper and lower inserts, raised strips 71, and stoppers are sequentially connected to ensure that the stoppers maintain contact between the packaging film and the tissue paper, preventing any loosening during the sealing process.

[0057] Example 5: The film packaging device of this soft tissue paper packaging machine includes: a turntable 6, which is driven to rotate by a power source and stops at each station, including at least the feeding station 2, the sealing station 3 and the discharging station 4; two upper and lower pressing plates 5, which are arranged on the turntable 6 and are driven to rotate by the turntable 6 and can move relative to each other; a protective wall 7, which is arranged between the sealing station 3 and the feeding station 2 to prevent the film of the finished product wrapped with soft tissue paper from loosening during the transfer process; a movable lower insert plate or upper and lower insert plates, which are used to fold the side edges of the film at the feeding station 2;

[0058] The upper and lower pressing plates 5 are both provided with a first edge and a second edge. After the first edge and the second edge are staggered, a gap is formed. The gap formed by the upper and lower pressing plates 5 is for the corresponding lower insert plate or upper and lower insert plates to enter and exit the gap.

[0059] When the lower insert plate or the upper and lower insert plates are not inserted into the notch, the second edge forms a first distance from the first edge of the upper and lower pressing plates 5;

[0060] When the lower plug board or the upper and lower plug boards are inserted into the notch, the second edge forms a second distance from the inner edge of the lower plug board or the upper and lower plug boards.

[0061] The sealing station 3 includes a movable sealing plate for heat-sealing the folded film. It also features several stop bars to maintain the film and tissue paper in a compacted state during sealing. These stop bars ensure that the soft tissue paper forms a second edge and a second distance from the stop bar after being released from the insert plate, preventing the folded plastic outer packaging from loosening. The stop bar can be a resilient strip positioned beneath the sealing plate 31, or one end of the strip can be connected to a spring. A resilient strip maximizes its deformation. Since tissue paper is soft and compressible, the elastic strip conforms to its compressed shape. The inner side of the protective wall 7 features several ridges that align with the notches to connect the tissue paper to the second distance and prevent the film from loosening. The outer surfaces of the ridges form a second distance from the center of the turntable 6, replacing the insert plate during tissue paper transport. Stop blocks are provided on the upper and lower pressure plates 5 to limit the space for folding the tissue paper. The upper pressing plate 5 is arranged on the guide rail through the pressing plate bracket and moves on the guide rail through the power source. The sealing plate 31 is provided with a retaining groove that matches the size of the limit strip, which will not affect the sealing effect. Figure 4 The arrangement shown has mounting posts with through holes for mounting the limit bars.

[0062] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0063] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A film packaging device for a soft tissue paper packaging machine, characterized in that: include The turntable is driven by a power source to rotate and stop at each station, including at least a feeding station, a sealing station and a discharging station; The upper and lower pressing plates are set on the turntable and can move relative to each other through the rotation of the turntable; The protective wall is set between the sealing station and the feeding station to prevent the film of the finished product wrapped with soft tissue paper from loosening during the transfer process; A movable lower insert or upper and lower inserts for folding the sides of the film at the feed station; The upper and lower pressing plates are both provided with a first edge and a second edge. The first edge and the second edge are staggered to form a gap. The gap formed by the upper and lower pressing plates allows the corresponding lower insert plate or upper and lower insert plates to enter and exit the gap. A first distance is formed between the first edges of the upper and lower pressing plates and the corresponding second edges of the upper and lower pressing plates; When the lower insert plate or the upper and lower insert plates are inserted into the notch, the inner edge of the lower insert plate or the upper and lower insert plates forms a second distance from the second edge of the corresponding upper and lower pressing plates; The length of the second distance is smaller than the length of the first distance.

2. The film packaging device of the soft tissue paper packaging machine according to claim 1, characterized in that: The sealing station includes a movable sealing plate for heat-sealing the folded film; it is also provided with a number of limit strips to keep the film and paper towel in a compacted state for sealing.

3. The film packaging device of the soft tissue paper packaging machine according to claim 2, characterized in that: The limiting strip is an elastic strip-shaped object, which is arranged below the sealing plate; or one end of the strip-shaped object is connected to a spring.

4. The film packaging device of the soft tissue paper packaging machine according to claim 2, characterized in that The inner side of the protective wall is provided with a number of convex strips matching the notches, which are used to connect the paper towels conveyed at the second distance to prevent the film from loosening.

5. The film packaging device of the soft tissue paper packaging machine according to claim 1, characterized in that Limit blocks are provided on the upper and lower pressure plates to limit the folding space of the paper towels.

6. The film packaging device of the soft tissue paper packaging machine according to claim 5, characterized in that The upper pressing plate is arranged on the guide rail through a pressing plate bracket and moves on the guide rail through a power source.

7. The film packaging device of the soft tissue paper packaging machine according to claim 2, characterized in that The sealing plate is provided with a retaining groove that matches the size of the limiting strip.

8. The film packaging device of the soft tissue paper packaging machine according to claim 4, characterized in that An opening is provided at the end of the guard wall for the sealing plates of the sealing station to enter and exit. One end of the limit strip is connected to the eaves of the guard wall, and the other end is connected to the wall body.

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