Paper tube forming unit

Abstract

The invention provides a paper tube forming unit. The paper tube forming unit comprises a small paper tube forming machine and a large paper tube forming machine. The small paper tube forming machine is used for forming small paper tubes and comprises a first raw material placing position, a first gluing mechanism and a first forming mechanism which are arranged in sequence; the large paper tube forming machine is used for forming a large paper tube and comprises a second raw material placing position, a second gluing mechanism and a second forming mechanism which are arranged in sequence; the second forming mechanism is located on the rear side of the discharging position of the small paper tube forming machine, and small paper tubes sent out of the small paper tube forming machine can enter a forming cavity of the second forming mechanism. Compared with the prior art, the paper tube forming unit provided by the invention can realize automatic production of multiple paper tubes, and is high in automation degree and high in production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of paper tube production equipment, and in particular to a paper tube forming unit. Background Art

[0002] Paper tubes are tubular objects made of paper tape. In production and life, paper tubes are widely used. For example, paper tubes can be used in tobacco products as wrappers for tobacco products or other functional structures.

[0003] At present, paper tubes are made through automated processing by paper tube forming machines. When the paper tape moves in the paper tube forming machine, the paper tape is coated with glue and rolled through various components in the paper tube forming machine, so that the paper tape is rolled into a paper tube.

[0004] However, the paper tube forming machine in the prior art can only form a single paper tube (only one paper tube can be formed at a time). With the increase in consumer demand, there is currently a demand for the production of multiple paper tubes. Multiple paper tubes refer to a large paper tube with a large diameter and one or more small paper tubes with small diameters are additionally arranged inside.

[0005] Therefore, how to provide a paper tube forming unit to meet the production needs of multiple paper tubes is a technical problem that needs to be urgently solved in this field. Summary of the invention

[0006] In view of the above technical problems, the present invention provides a paper tube forming machine unit, which is provided with a small paper tube forming machine and a large paper tube forming machine. The small paper tube forming machine is used to form multiple small paper tubes, and the large paper tube forming machine is used to form large paper tubes. The second forming mechanism of the large paper tube forming machine is located at the rear side of the discharge position of the small paper tube forming machine, so that the small paper tubes formed and sent out by the small paper tube forming machine can be directly sent into the large paper tube, meeting the production needs of multiple paper tubes, and realizing automatic production of multiple paper tubes, with a high degree of automation and high production efficiency.

[0007] A paper tube forming machine unit, comprising a small paper tube forming machine and a large paper tube forming machine; The small paper tube forming machine is used to form small paper tubes, and the small paper tube forming machine comprises a first raw material placement position, a first gluing mechanism, and a first forming mechanism which are arranged in sequence; The large paper tube forming machine is used to form a large paper tube, and the large paper tube forming machine comprises a second raw material placement position, a second gluing mechanism, and a second forming mechanism which are arranged in sequence; The second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, and the small paper tube formed and sent out from the small paper tube forming machine can enter the forming cavity of the second forming mechanism.

[0008] Preferably, the first gluing mechanism is provided with a plurality of small paper tape channels, and a small paper tape glue gun is correspondingly provided at each of the small paper tape channels; The first forming mechanism is provided with a plurality of small paper tube forming cavities, and the small paper tube forming cavities are arranged in one-to-one correspondence with the small paper tape channels; A plurality of small paper rolls are placed in the first raw material placement position; or a small paper tape slitting mechanism is also provided between the first raw material placement position and the first gluing mechanism.

[0009] Preferably, a pre-pressing mechanism is further arranged between the first gluing mechanism and the first forming mechanism, and the pre-pressing mechanism includes a pre-pressing bottom plate and a pre-pressing block. A pre-pressing channel is opened on the pre-pressing bottom plate, and the pre-pressing channels are arranged in a one-to-one correspondence with the small paper tape channels, and a pre-pressing block is correspondingly arranged above each pre-pressing channel.

[0010] Preferably, the small paper tube forming machine further comprises a paper tube gathering mechanism, the paper tube gathering mechanism is located at the rear side of the first forming mechanism, the paper tube gathering mechanism comprises a gathering paper guide plate, and a guide channel for the small paper tube to flow through is opened in the gathering paper guide plate; Along the conveying direction of the small paper tube, the guide channel includes a first channel and a second channel which are connected in sequence; Along the conveying direction of the small paper tube, the first channel is a structure with gradually decreasing width; The width of the second channel is not greater than the minimum width of the first channel.

[0011] Preferably, a cloth belt conveying mechanism is provided in the first forming mechanism, and the cloth belt conveying mechanism is used to drive the small paper belt to move.

[0012] Preferably, a double-layer paper tape gluing mechanism and a double-layer paper tape heating mechanism are further provided between the second raw material placement position and the second gluing mechanism; The double-layer paper tape gluing mechanism is used to spray glue onto one layer of paper tape or two layers of paper tape; The double-layer paper tape heating mechanism is used to heat and bond the double-layer paper tape; Two large paper rolls are placed in the second raw material placement position; or a large paper tape slitting mechanism is also arranged between the second raw material placement position and the double-layer paper tape gluing mechanism.

[0013] Preferably, two glue guns are provided in the double-layer paper tape gluing mechanism, and the two glue guns are used to spray glue onto two corresponding bonding positions on the paper tape.

[0014] Preferably, the double-layer paper tape heating mechanism comprises a heating block and a large paper tape channel opened in the heating block; The large paper tape channel extends along the length direction of the heating block; Along the width direction of the heating block, the heating block is divided into a high temperature heating block unit and a low temperature heating block unit which are spaced apart from each other; The large paper tape channel is located at the high temperature heating block unit and the low temperature heating block unit. The high temperature heating block unit is arranged corresponding to one bonding position of the paper tape, and the low temperature heating block unit is arranged corresponding to another bonding position of the paper tape.

[0015] Preferably, the second glue coating mechanism comprises a large paper tape guide board, a first glue gun and a second glue gun; The large paper tape guide paper board is provided with a large paper tape guide channel; The gun head of the first glue gun is aligned with the edge of the paper guide channel of the large paper tape; The gun head of the second glue gun is aligned with the central area of ​​the large paper tape paper guide channel.

[0016] Preferably, the large paper tube forming machine further comprises a pressing block structure, wherein the pressing block structure comprises a pressing block and air holes arranged on the pressing block; The pressing block is located at the rear side of the second forming mechanism and is extended along the conveying direction of the large paper tube; The air holes are arranged corresponding to the bonding positions of the large paper tubes, and the air holes are used to be connected to an external air source so as to blow airflow toward the bonding positions of the large paper tubes.

[0017] Compared with the prior art, the paper tube forming machine unit provided by the present invention includes a small paper tube forming machine and a large paper tube forming machine; the small paper tube forming machine is used to form small paper tubes, and the small paper tube forming machine includes a first raw material placement position, a first gluing mechanism, and a first forming mechanism which are arranged in sequence; the large paper tube forming machine is used to form large paper tubes, and the large paper tube forming machine includes a second raw material placement position, a second gluing mechanism, and a second forming mechanism which are arranged in sequence; the second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, and the small paper tube formed and sent out from the small paper tube forming machine can enter the forming cavity of the second forming mechanism. The forming unit is provided with the small paper tube forming machine and the large paper tube forming machine, so that the automatic processing and forming of small paper tubes and large paper tubes can be realized, and the second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, so that the formed small paper tube can be automatically fed into the second forming mechanism, thereby feeding the small paper tube into the large paper tube, realizing the production of multiple paper tubes, meeting the production needs of multiple paper tubes, and realizing the automatic production of multiple paper tubes, with a high degree of automation and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a paper tube forming unit provided in an embodiment; Figure 2 for Figure 1 A front view of the paper tube forming unit shown; Figure 3 A schematic diagram of the three-dimensional structure of a small paper tape gluing paper guide in a first gluing mechanism provided in an embodiment; Figure 4 A schematic diagram of the three-dimensional structure of a pre-pressing mechanism provided in an embodiment; Figure 5 A front view of a cloth belt conveying mechanism provided in an embodiment; Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the mechanism shown after removing some structures; Figure 7 for Figure 6 a front view of the structure shown; Figure 8 A schematic diagram of the three-dimensional structure of a paper tube gathering mechanism provided in an embodiment; Fig. 9 for Figure 8 A schematic diagram of the three-dimensional structure of the bottom plate shown; Fig.10 for Fig. 9 a top view of the bottom plate shown; Fig.11 For along Fig.10 A schematic diagram of the cross-sectional structure of BB shown; Fig.12 for Fig. 9 a right side view of the bottom plate shown; Fig.13 for Fig. 9 a left side view of the bottom plate shown; Fig.14 In one embodiment, the paper tube passes through Figure 8 The schematic diagram of the structure before the paper tube gathering mechanism is shown; Fig.15 In one embodiment, the paper tube passes through Figure 8 The schematic diagram of the structure after the paper tube gathering mechanism is shown; Fig.16 A schematic diagram of a cross-sectional structure of a double-layer paper tape provided in an embodiment; Fig.17 A schematic diagram of the three-dimensional structure of a double-layer paper tape heating mechanism provided in an embodiment; Fig.18 for Fig.17 A schematic diagram of the three-dimensional structure of the heating block and the pressing shaft shown; Fig.19 A schematic diagram of the three-dimensional structure of a second glue coating mechanism provided in an embodiment; Fig. 20 A schematic diagram of the three-dimensional structure of a second glue coating mechanism provided in another embodiment; Fig.21 for Fig. 20 A schematic diagram of the three-dimensional structure of the connecting plate and the transition plate shown; Fig. 22 A schematic diagram of a three-dimensional structure of a pressing block structure provided by an embodiment; Fig.23 for Fig. 22 A schematic diagram of the three-dimensional structure of the pressing block shown; Fig.24 for Fig.23 A schematic diagram of the three-dimensional structure of the pressing block at another angle; Fig.25 Schematic diagram of the structure of the air holes in the pressing block blowing air flow to the paper tube in one embodiment. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0025] The present invention provides a paper tube forming machine group, which includes a small paper tube forming machine and a large paper tube forming machine; the small paper tube forming machine is used to form small paper tubes, and the small paper tube forming machine includes a first raw material placement position, a first gluing mechanism, and a first forming mechanism which are arranged in sequence; the large paper tube forming machine is used to form large paper tubes, and the large paper tube forming machine includes a second raw material placement position, a second gluing mechanism, and a second forming mechanism which are arranged in sequence; the second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, and the small paper tube formed and sent out from the small paper tube forming machine can enter the forming cavity of the second forming mechanism. The forming unit is provided with the small paper tube forming machine and the large paper tube forming machine, so that the automatic processing and forming of small paper tubes and large paper tubes can be realized, and the second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, so that the formed small paper tube can be automatically fed into the second forming mechanism, thereby feeding the small paper tube into the large paper tube, realizing the production of multiple paper tubes, meeting the production needs of multiple paper tubes, and realizing the automatic production of multiple paper tubes, with a high degree of automation and high production efficiency.

[0026] Please refer to Figure 1 , Figure 2 as well as Fig.25In one embodiment, a paper tube forming unit 100 is provided, which is mainly used to realize the automated production of multiple paper tubes.

[0027] The paper tube forming unit 100 includes a small paper tube forming machine 101 and a large paper tube forming machine 102. The small paper tube forming machine 101 is used to form a small paper tube 200, and the large paper tube forming machine 102 is used to form a large paper tube 300. The small paper tube refers to a paper tube with a relatively small diameter; the large paper tube refers to a paper tube with a relatively large diameter.

[0028] The small paper tube forming machine 101 includes a first raw material placement position 1011, a first gluing mechanism 20, and a first forming mechanism 30 which are arranged in sequence. The first raw material placement position 1011 is used to place the raw material paper roll for forming the small paper tube, the first gluing mechanism 20 is used to spray overlapping glue on the small paper tape, and the first forming mechanism 30 is used to roll the small paper tape into the small paper tube.

[0029] The large paper tube forming machine 102 includes a second raw material placement position 1021, a second gluing mechanism 40, and a second forming mechanism 50 which are arranged in sequence. The second raw material placement position 1021 is used to place the raw material paper roll for forming the large paper tube, the second gluing mechanism 40 is used to spray overlapping glue on the large paper tape, and the second forming mechanism 50 is used to roll the large paper tape into the large paper tube 300.

[0030] The second forming mechanism 50 is located at the rear side of the discharge position of the small paper tube forming machine 101, and the small paper tube 200 formed and sent out by the small paper tube forming machine 101 can enter the forming cavity of the second forming mechanism 50. That is, after the small paper tube 200 is formed and sent out by the small paper tube forming machine 101, it is sent into the second forming mechanism 50, and the formed small paper tube 200 is received by the second forming mechanism 50. Since the second forming mechanism 50 is also used for rolling and forming the large paper tube 300, the paper tube finally formed and sent out from the second forming mechanism 50 is a multiple paper tube (that is, the small paper tube 200 is additionally arranged inside one of the large paper tubes 300).

[0031] The paper tube forming unit 100 organically combines the small paper tube forming machine 101 and the large paper tube forming machine 102, thereby being able to realize the automated production of multiple paper tubes, meet the production needs of multiple paper tubes, and has a high degree of automation and high production efficiency.

[0032] Please refer to Figure 2 and Figure 3Preferably, in one embodiment, the first gluing mechanism 20 is provided with a plurality of (at least two) small paper tape channels 21, and a small paper tape glue gun 23 is correspondingly provided at each of the small paper tape channels 21. That is to say, in this embodiment, multiple small paper tapes can flow through the first gluing mechanism 20 at the same time, and the first gluing mechanism 20 can spray glue on the overlap of each small paper tape respectively. The first molding mechanism 30 is provided with a plurality of small paper tube molding cavities, and the small paper tube molding cavities are arranged one by one corresponding to the small paper tape channels 21. That is to say, in this embodiment, the number and position of the small paper tube molding cavities are matched with the number and position of the small paper tape channels 21, so that the first molding mechanism 30 can roll multiple small paper tapes at the same time, thereby completing the synchronous rolling and molding of multiple small paper tubes 200. Multiple small paper rolls are placed in the first raw material placement position 1011, that is, the first raw material placement position 1011 can be pre-placed with paper rolls matching the number of the small paper tubes 200 that need to be produced synchronously. For example, when three small paper tubes 200 need to be produced synchronously, three (or more) paper rolls can be placed in the first raw material placement position 1011 to adapt to the manufacture of three small paper tubes 200.

[0033] Alternatively, a small paper tape slitting mechanism is further provided between the first raw material placement position 1011 and the first gluing mechanism 20. That is, in this embodiment, a paper roll formed by winding a wider paper tape (e.g., a double-width or triple-width paper tape) can be placed at the first raw material placement position 1011, so that during the production process, the paper tape is slit by the paper tape slitting mechanism to form a required number of small paper tapes of width, and then a corresponding number of small paper tapes are fed into the first gluing mechanism 20 later.

[0034] Specifically, in one embodiment, the first gluing mechanism 20 is provided with three small paper tape channels 21 and three small paper tape glue guns 23 .

[0035] Specifically, in one embodiment, the first gluing mechanism 20 includes a small paper tape gluing paperboard 22 and the small paper tape glue gun 23, the small paper tape channel 21 is opened on the small paper tape gluing paperboard 22, and the small paper tape channel 21 is extended along the length direction of the small paper tape gluing paperboard 22. The small paper tape glue gun 23 is connected to a glue box storing glue, and the gun head of the small paper tape glue gun 23 is aligned with the edge of the small paper tape channel 21, so that the glue sprayed from the small paper tape glue gun 23 will be sprayed into the edge overlap of the small paper tape.

[0036] The length direction of the small paper tape glue guide paper 22 is Figure 3 In the X1 direction, the width direction of the small paper tape glue guide paper 22 is Figure 3 In the Y1 direction, the thickness direction of the small paper tape glue guide paper 22 is Figure 3 Z1 direction shown.

[0037] Preferably, in one embodiment, the small paper tape gluing paper guide 22 is further provided with an inspection and cleaning hole 221, and the inspection and cleaning hole 221 is set through the small paper tape gluing paper guide 22 along the thickness direction of the small paper tape gluing paper guide 22. The inspection and cleaning hole 221 is set to align with the gun head of the small paper tape glue gun 23, and each small paper tape glue gun 23 is correspondingly provided with one inspection and cleaning hole 221. It can be understood that when the small paper tape glue gun 23 is working, glue is easily left on the gun head of the small paper tape glue gun 23, which may cause problems such as clogging of the gun head, affecting the normal gluing of the small paper tape glue gun 23, and therefore, it is often necessary to clean and maintain the gun head of the small paper tape glue gun 23. Through the provision of the inspection and cleaning hole 221, when the gun head of the small paper tape glue gun 23 needs to be cleaned and maintained, there is no need to disassemble the small paper tape glue gun 23. Only the cleaning parts need to be passed through the inspection and cleaning hole 221 from the back side of the small paper tape glue guide paperboard 22 to clean the gun head of the small paper tape glue gun 23, thereby improving the cleaning and maintenance efficiency of the small paper tape glue gun 23 and reducing the difficulty of cleaning and maintenance.

[0038] It is understandable that, during the production process, the small paper tape may be laterally offset due to various factors, resulting in a certain offset difference in the front and rear positions of the small paper tape. Preferably, in one embodiment, the first gluing mechanism 20 also includes a small paper tape gluing sliding unit, and the small paper tape gluing guide paperboard 22 is arranged on a slide of the small paper tape gluing sliding unit, and the sliding direction of the slide is the width direction of the small paper tape gluing guide paperboard 22. The arrangement of the small paper tape gluing sliding unit can facilitate the adjustment of the lateral position of the small paper tape gluing guide paperboard 22 to better adapt to the offset of the small paper tape. Specifically, the small paper tape gluing sliding unit can adopt any desired structure, such as an electric slide, a pneumatic slide, etc., and can even be manually driven, as long as it can drive the small paper tape gluing guide paperboard 22 to move laterally.

[0039] Please refer to Figure 1 and Figure 4Preferably, in one embodiment, a pre-pressing mechanism 60 is further provided between the first gluing mechanism 20 and the first forming mechanism 30, and the pre-pressing mechanism 60 includes a pre-pressing bottom plate 61 and a pre-pressing block 62. A pre-pressing channel 611 is provided on the pre-pressing bottom plate 61, and the pre-pressing channel 611 is arranged in a one-to-one correspondence with the small paper tape channel 21, and a pre-pressing block 62 is correspondingly arranged above each pre-pressing channel 21. That is to say, in this embodiment, the number and position of the pre-pressing channels 611 match the number and position of the small paper tape channels 21, so that after each small paper tape is glued in the first gluing mechanism 20, it can flow into the pre-pressing mechanism 60 accordingly, and each small paper tape is pre-pressed by the pre-pressing mechanism 60, so as to facilitate the subsequent forming of the small paper tube 200. It can be understood that the diameter of the paper tube formed in the small paper tube forming machine 101 is smaller, and therefore the forming difficulty is greater. By setting the pre-pressing mechanism 60, the small paper tape can be pre-bent by the pre-pressing mechanism 60, so that the small paper tape enters the first forming mechanism 30 in a bent form, thereby reducing the difficulty of the first forming mechanism 30 to roll the small paper tape into the small paper tube 200, and improving the stability of the small paper tube forming machine 101 in forming the small paper tube 200.

[0040] Specifically, in one embodiment, three pre-pressing channels 611 are provided, and three pre-pressing blocks 62 are provided correspondingly.

[0041] Specifically, in one embodiment, the pre-pressing channel 611 is an arc-shaped groove structure as a whole, and the bottom of the pre-pressing block 62 is an arc-shaped structure, which is conducive to bending the small paper tape.

[0042] Preferably, in one embodiment, a core shaft 63 is provided on the pre-pressing block 62, and the core shaft 63 extends into the small paper tube forming cavity of the first forming mechanism 30. Therefore, when the first forming mechanism 30 rolls the small paper tape into shape, the core shaft 63 can correspondingly press against the inner side of the small paper tape and support from the inner side of the small paper tube 200, thereby ensuring that the rolling and forming of the small paper tube 200 is reliable and that the formed small paper tube 200 will not have problems such as concave.

[0043] Please refer to Figures 5 to 7 Preferably, in one embodiment, a cloth belt conveying mechanism 301 is provided in the first forming mechanism 30, and the cloth belt conveying mechanism 301 is used to drive the small paper belt. The cloth belt conveying mechanism 301 provides power to drive the small paper belt to move, thereby also pulling the small paper belt on the front side, so as to achieve continuous movement of the small paper belt (the small paper tube 200) in the entire small paper tube forming machine 101, so that the paper roll in the first raw material placement position 1011 can be continuously unwound.

[0044] Specifically, in one embodiment, the cloth belt conveying mechanism 301 includes a driving unit (not shown), a driving wheel 31, a driven wheel 32, a cloth belt 33, and a guide plate 34. The driving unit is connected to the driving wheel 31 to drive the driving wheel 31 to rotate, and the driving unit can be a motor. The driven wheel 32 includes a first driven wheel 321 and a second driven wheel 322, and the first driven wheel 321 and the second driven wheel 322 are arranged in parallel and spaced apart.

[0045] The cloth belt 33 is provided with a plurality of (at least two) cloth belts, and each cloth belt 33 is sequentially wound around the driving wheel 31, the first driven wheel 321, and the second driven wheel 322. That is to say, after the cloth belt 33 is wound around the driving wheel 31, it will first be wound around the first driven wheel 321, then around the second driven wheel 322, and then back to the driving wheel 31 via the second driven wheel 322.

[0046] Specifically, in one embodiment, three cloth belts 33 are provided, and the three cloth belts 33 are arranged parallel to each other and spaced apart along the axial direction of the driving wheel 31. The three cloth belts 33 are sequentially divided into a first cloth belt 331, a second cloth belt 332, and a third cloth belt 333. Since three cloth belts 33 are provided, when the driving unit drives the driving wheel 31 to rotate, the three cloth belts 33 can be driven to operate synchronously.

[0047] The guide plate 34 is located at the rear side of the first driven wheel 321, wherein the rear side and the front side are referenced to the running direction of the cloth belt 33. The guide plate 34 is provided with a receiving channel, and along the width direction of the guide plate 34 (the width direction of the guide plate 34 is parallel to the axial direction of the driving wheel 31), the receiving channel includes a first channel, a second channel, and a third channel which are arranged in sequence. The first cloth belt 331 passes through the first channel, the second cloth belt 332 passes through the second channel, and the third cloth belt 333 passes through the third channel. Specifically, at least part of the receiving channel is an arc-shaped cross-sectional structure, so that the receiving channel can bend the cloth belt 33 into an arc-shaped structure. In the process of the cloth belt 33 driving the small paper belt to move, the cloth belt 33 will be bent into an arc-shaped structure, thereby bending the small paper belt into the small paper tube 200. That is, the cloth tape 33 is used to drive the small paper tape to move and is also used to form the small paper tube 200. The cavity for forming the paper tube is formed by bending and winding the cloth tape 33. After driving the small paper tape into the accommodating channel, the cloth tape 33 is bent due to the guidance of the accommodating channel, so that the cloth tape 33 bends the small paper tape and forms the small paper tape into the small paper tube 200.

[0048] It should be noted that in other embodiments, the number of the cloth belts 33 may be greater, for example, a fourth cloth belt, a fifth cloth belt, etc. may be provided, and accordingly, the number of the accommodating channels in the guide plate 34 may also be changed accordingly. This embodiment is described by taking only three cloth belts 33 as an example.

[0049] The cloth belt conveying mechanism 301 is provided with a plurality of cloth belts 33, so that a plurality of small paper tubes 200 can be synchronously driven to move, meeting the conveying requirements of multiple paper tubes. In addition, a plurality of accommodating channels are provided, so that the paper tubes can be guided and formed during the conveying process, ensuring that the paper tubes will not deflect during the conveying process.

[0050] Preferably, in one embodiment, the fabric belt conveying mechanism 301 further includes an adjusting wheel set 35 and a tensioning wheel set 36. The adjusting wheel set 35 and the tensioning wheel set 36 are located at the rear side of the driving wheel 31 and at the front side of the first driven wheel 321. After the fabric belt 33 is wound out of the adjusting wheel set 35 and the tensioning wheel set 36, it is wound into the first driven wheel 321. Through the arrangement of the adjusting wheel set 35 and the tensioning wheel set 36, each fabric belt 33 can be controlled and tensioned to ensure stable operation.

[0051] Preferably, in one embodiment, the adjusting wheel group 35 includes a first adjusting wheel 351, a second adjusting wheel 352, a third adjusting wheel 353, and a fourth adjusting wheel 354, which are arranged in parallel and spaced order. The tensioning wheel group 36 includes a first tensioning wheel 361, a second tensioning wheel 362, and a third tensioning wheel 363, which are arranged in parallel and spaced order. The first tensioning wheel 361 is located below the first adjusting wheel 351 and the second adjusting wheel 352, and is located in the middle of the first adjusting wheel 351 and the second adjusting wheel 352. The second tensioning wheel 362 is located below the second adjusting wheel 352 and the third adjusting wheel 353, and is located in the middle of the second adjusting wheel 352 and the third adjusting wheel 353. The third tensioning wheel 363 is located below the third adjusting wheel 353 and the fourth adjusting wheel 354, and is located in the middle of the third adjusting wheel 353 and the fourth adjusting wheel 354. After the first cloth belt 331 passes through the top of the first adjustment wheel 351, the second adjustment wheel 352, and the third adjustment wheel 353, it goes around the bottom of the third tensioning wheel 363, and then passes out from the top of the fourth adjustment wheel 354. After the second cloth belt 332 passes through the top of the first adjustment wheel 351 and the second adjustment wheel 352, it goes around the bottom of the second tensioning wheel 362, and then passes out from the top of the third adjustment wheel 353 and the fourth adjustment wheel 354. After the third cloth belt 333 passes through the top of the first adjustment wheel 351, it goes around the bottom of the first tensioning wheel 361, and then passes out from the top of the second adjustment wheel 352, the third adjustment wheel 353, and the fourth adjustment wheel 354. Through this structure, the tensioning effect of the first cloth belt 331, the second cloth belt 332, and the third cloth belt 333 is guaranteed. At the same time, the first cloth tape 331, the second cloth tape 332, and the third cloth tape 333 can be made of the same length type, so that during maintenance, cloth tapes of the same length type can be used for maintenance and replacement.

[0052] Preferably, in one embodiment, it further includes a first tensioning control unit 364, a second tensioning control unit 365, and a third tensioning control unit 366. The first tensioning control unit 364 is connected to the first tensioning wheel 361 to drive the first tensioning wheel 361 to rise and fall. The second tensioning control unit 365 is connected to the second tensioning wheel 362 to drive the second tensioning wheel 362 to rise and fall. The third tensioning control unit 366 is connected to the third tensioning wheel 363 to drive the third tensioning wheel 363 to rise and fall. Through the setting of the tensioning control unit, the control of the tensioning wheel is more convenient and simple. And when the cloth belt 33 needs to be repaired and replaced, it is only necessary to drive the tensioning wheel to rise through the tensioning control unit to loosen the cloth belt 33, so as to facilitate the repair and replacement of the cloth belt 33. After the replacement is completed, it is only necessary to drive the tensioning wheel to descend through the tensioning control unit to tension the cloth belt 33. Specifically, the first tensioning control unit 364 , the second tensioning control unit 365 , and the third tensioning control unit 366 may all adopt cylinders.

[0053] Preferably, in one embodiment, the fabric belt conveying mechanism 301 further includes a fabric belt deviation adjustment roller 37, and three fabric belt deviation adjustment rollers 37 are provided, and each fabric belt 33 passes through a corresponding fabric belt deviation adjustment roller 37. The fabric belt deviation adjustment roller 37 can be used to adjust the lateral position of the corresponding fabric belt 33 to avoid the fabric belt 33 from being skewed. Specifically, the fabric belt deviation adjustment roller 37 is a manual deviation adjustment structure. The fabric belt deviation adjustment roller 37 can be installed on the truss 38 on the side.

[0054] Preferably, in one embodiment, the cloth belt conveying mechanism 301 further includes a pressing plate 39, which is arranged above the guide plate 34 to shape and limit the paper tube. The pressing plate 39 can limit the top bonding overlap of the small paper tube 200, thereby preventing the paper tube from loosening from the overlap and affecting the forming of the paper tube. Specifically, in one embodiment, the glue sprayed in the first gluing mechanism 20 is hot melt glue, the pressing plate 39 is a hot pressing forming plate (a heating component, such as a resistance wire, etc., can be arranged inside the pressing plate 39), and the accommodating channel is a top opening structure, so that the bonding overlap at the top of the small paper tube 200 can be heated and melted by the pressing plate 39 to ensure the smooth forming of the small paper tube 200.

[0055] Preferably, in one embodiment, the pressing plate 39 is movably arranged above the guide plate 34, that is, the pressing plate 39 can be moved relative to the guide plate 34, thereby changing the positional relationship between the pressing plate 39 and the guide plate 34, so as to facilitate maintenance and other operations. Specifically, in one embodiment, the pressing plate 39 can be flipped on the frame of the paper tube forming machine, so that the pressing plate 39 can be flipped relative to the guide plate 34. When maintenance and other operations are required, the pressing plate 39 can be directly flipped from the guide plate 34.

[0056] Preferably, in one embodiment, the lower surface of the pressing plate 39 is provided with an arc groove 391, and the arc groove 391 is provided with three arc grooves, which are divided into a first arc groove, a second arc groove, and a third arc groove, wherein the first arc groove is located above the first channel, the second arc groove is located above the second channel, and the third arc groove is located above the third channel. With this structure, the circular small paper tube 200 can be better adapted.

[0057] It is understandable that in order to avoid interference between the small paper tubes 200 (small paper strips) when multiple small paper tubes 200 are produced at the same time, the small paper tubes 200 (small paper strips) are spaced a certain distance apart. In multiple paper tubes, there are certain requirements for the spacing between the small paper tubes 200 (or the small paper tubes 200 need to be gathered and connected to each other). Preferably, in one embodiment, the small paper tube forming machine 101 further includes a paper tube gathering mechanism 70 , and the paper tube gathering mechanism 70 is located at the rear side of the first forming mechanism 30 .

[0058] Please refer to Figures 8 to 15 The paper tube gathering mechanism 70 includes a gathering guide paper 71, and a guide channel 72 for the small paper tube 200 to flow through is provided in the gathering guide paper 71. Fig.10 L direction as shown), the guide channel 72 includes a first guide channel 721 and a second guide channel 722 which are connected in sequence. Along the conveying direction of the small paper tube 200, the first guide channel 721 is a structure with a gradually reduced width. That is, at least one of the side walls 7211 of the first guide channel 721 is inclined inwardly, so that when a plurality of the small paper tubes 200 flow through the first guide channel 721, the small paper tubes 200 located on the outside will be limited and guided by the side walls 7211 of the first guide channel 721, so that during the flow of the small paper tubes 200, the small paper tubes 200 on the outside are guided to move inwardly, thereby reducing the spacing between the small paper tubes 200.

[0059] It can be understood that the maximum width and the minimum width of the first guide channel 721 can be selected according to actual needs. The maximum width of the first guide channel 721 only needs to meet the following requirements: not less than the overall width occupied by each of the small paper tubes 200 before being gathered together, thereby ensuring that each of the small paper tubes 200 can smoothly enter the first guide channel 721.

[0060] The width of the second guide channel 722 is not greater than the minimum width of the first guide channel 721, so that after the small paper tube 200 flows out of the first guide channel 721, the side wall of the second guide channel 722 can continue to limit the small paper tube 200 on the outside, ensuring that the small paper tube 200 on the outside will not spread outward. Specifically, the overall width of the second guide channel 722 can be the same as the minimum width of the first guide channel 721, or a portion of the second guide channel 722 can also be set to a gradually narrowing width structure.

[0061] Specifically, in one embodiment, the side walls 7211 on both sides of the first guide channel 721 are inclined inward, so as to achieve position limiting and guiding of the small paper tubes 200 located on both sides.

[0062] Specifically, in one embodiment, there are three small paper tubes 200 that need to flow through the guide channel 72, and the three small paper tubes 200 are spaced apart from each other. The maximum width of the first guide channel 721 is not less than the overall width of the three small paper tubes 200 spaced apart from each other, and the minimum width of the first guide channel 721 is not greater than the overall width of the three small paper tubes 200 spaced apart from each other. Therefore, after the three small paper tubes 200 flow through the first guide channel 721, the small paper tubes 200 located on the outermost side will be guided inward, thereby reducing the spacing between the small paper tubes 200.

[0063] Preferably, in one embodiment, the second guiding channel 722 includes a connecting channel 7221 and a forming channel 7222. One end of the connecting channel 7221 communicates with the first guiding channel 721, and the forming channel 7222 communicates with the other end of the connecting channel 7221. That is to say, when the small paper tube 200 flows through the guiding channel 72, it sequentially flows through the first guiding channel 721, the connecting channel 7221, and the forming channel 7222. Wherein, along the width direction of the forming channel 7222, the bottom wall 72221 of the forming channel 7222 is divided into a plurality of bottom wall units, and at least one of the bottom wall units is a sunken structure. The sunken structure means that the height of the bottom wall unit is lower than the height of other bottom wall units. That is to say, among the bottom wall units in the forming channel 7222, at least one of the bottom wall units has a height lower than that of other bottom wall units, so as to guide the height of the small paper tube 200 flowing through the bottom wall unit to decrease, so that a height difference is formed between the small paper tubes 200, so that a part of the small paper tubes 200 is located on the relatively upper side and a part of the small paper tubes 200 is located on the relatively lower side, thereby completing the change of the height of the small paper tube 200.

[0064] Preferably, in one embodiment, along the width direction of the forming channel 7222, the bottom wall 72221 of the forming channel 7222 is divided into a central bottom wall unit 722211 and side bottom wall units 722212 located on both sides of the central bottom wall unit 722211. Thus, when the three small paper tubes 200 flow through the forming channel 7222, the small paper tube 200 located in the center can descend, so that a height difference is formed between the small paper tube 200 in the center and the small paper tubes 200 on both sides. When the three small paper tubes 200 flow out of the forming channel 7222, an inverted "pin" - shaped paper tube group can be formed as a whole.

[0065] Preferably, the central bottom wall unit 722211 includes an inclined bottom wall 7222111 close to the connecting channel 7221 and a parallel bottom wall 7222112 far from the connecting channel 7221. Along the conveying direction of the small paper tube 200, the height of the inclined bottom wall 7222111 gradually decreases. The parallel bottom wall 7222112 is connected to the lowermost end of the inclined bottom wall 7222111. That is to say, the side of the central bottom wall unit 7222111 close to the connecting channel 7221 is a gradually downward - inclined structure (i.e., the inclined bottom wall 7222111), so as to gradually guide the small paper tube 200 located in the center to descend. During the descending process, there is no convex step structure in the central bottom wall unit 7222111, so that the small paper tube 200 is not easily damaged.

[0066] Preferably, in one embodiment, along the conveying direction of the small paper tube 200, the head end of the forming channel 7222 is a width-tapering structure. Herein, the head end of the forming channel 7222 refers to the part of the forming channel 7222 relatively closer to the connecting channel 7221. It can be understood that since the small paper tube 200 located on the central bottom wall unit 722211 will descend, a certain space will be vacated. By setting the head end of the forming channel 7222 as a width-tapering structure, during the flow of the upper small paper tube 200, the upper small paper tube 200 will be guided to move inward, thereby reducing the interval distance between the upper small paper tubes 200.

[0067] Specifically, in one embodiment, the side walls 72222 on both sides of the head end of the forming channel 7222 are both inclined inward, so as to realize the limit guiding of the small paper tubes 200 located on both sides.

[0068] Preferably, in one embodiment, along the conveying direction of the small paper tube 200, at least a part of the bottom wall 7212 of the first guiding channel 721 is a height-increasing structure. That is, at least a part of the bottom wall 7212 in the first guiding channel 721 can lift the height of the small paper tube 200, so as to facilitate the docking of the paper tube gathering mechanism 70 with the front and rear devices. Specifically, in one embodiment, a raised bottom wall 72121 is provided in the bottom wall 7212 of the first guiding channel 721, and the raised bottom wall 72121 is a gradually upward inclined bottom wall.

[0069] Preferably, in one embodiment, the paper tube gathering mechanism 70 further includes a fixed glue gun 73, and the gun head 731 of the fixed glue gun 73 extends into the second guiding channel 722 to apply glue to the small paper tubes 200 in the second guiding channel 722. By applying glue to the small paper tubes 200 through the fixed glue gun 73, the small paper tubes 200 can be stably connected. The fixed glue gun 73 can be connected to structures such as a glue tank for storing glue, which is well known in the art and will not be elaborated here.

[0070] Specifically, in one embodiment, the gun head 731 of the fixed glue gun 73 extends into the central area of the forming channel 7222, so as to be able to apply glue to the small paper tube 200 located in the center, bond the three small paper tubes 200, and enable the three small paper tubes 200 to stably form an inverted "pin"-shaped paper tube group. And due to the extension of the gun head 731 of the fixed glue gun 73, it can also have a certain pressing effect to ensure that the small paper tube 200 in the center can move downward.

[0071] Preferably, in one embodiment, the gathering paper guide 71 includes a bottom plate 711 and a cover plate 712 covering the bottom plate 711, the guide channel 72 is opened on the bottom plate 711, and the cover plate 712 is provided with a glue gun hole 7121 for avoiding the fixed glue gun 73. The upper side of the small paper tube 200 can be limited by the provision of the cover plate 712 to prevent the small paper tube 200 from bouncing upward.

[0072] Preferably, in one embodiment, the paper tube gathering mechanism 70 further includes a gathering sliding unit, and the gathering paper guide 71 is arranged on a slide of the gathering sliding unit, and the sliding direction of the slide is the width direction of the gathering paper guide 71. The arrangement of the gathering sliding unit can facilitate the adjustment of the lateral position of the gathering paper guide 71 to better adapt to the deviation of the small paper tube 200 (paper tape). Specifically, the gathering sliding unit can adopt any desired structure, such as an electric slide, a pneumatic slide, etc., and can even be manually driven, as long as it can drive the gathering paper guide 71 to move lateral.

[0073] Preferably, in one embodiment, a double-layer paper tape gluing mechanism 80 and a double-layer paper tape heating mechanism 90 are also provided between the second raw material placement position 1021 and the second gluing mechanism 40, the double-layer paper tape gluing mechanism 80 is used to spray glue on one layer of paper tape or two layers of paper tape, and the double-layer paper tape heating mechanism 90 is used to heat and bond the double-layer paper tape.

[0074] Two large paper rolls are placed in the second raw material placement position 1021. It can be understood that the large paper tube 300 formed by a single-layer paper tape is relatively thin. In this embodiment, two large paper rolls are placed in the second raw material placement position 1021, and the double-layer paper tape gluing mechanism 80 and the double-layer paper tape heating mechanism 90 are set. Therefore, one or two large paper tapes can be first fed into the double-layer paper tape gluing mechanism 80, and after the double-layer paper tape gluing mechanism 80 sprays glue, the two large paper tapes are heated and glued by the double-layer paper tape heating mechanism 90, so that the large paper tape subsequently transported to the second gluing mechanism 40 is a double-layer paper tape, and then the final formed large paper tube 300 is wound by a double-layer paper tape, so that it can have a thicker thickness.

[0075] Alternatively, a large paper tape slitting mechanism is further provided between the second material placement position 1021 and the double-layer paper tape gluing mechanism 80. That is, in this embodiment, a paper roll formed by winding a wider paper tape (e.g., a double-width or triple-width paper tape) can be placed at the second material placement position 1021, so that during the production process, the paper tape is slit by the paper tape slitting mechanism to form large paper tapes of a required number of widths, and then a corresponding number of large paper tapes are fed into the subsequent mechanism.

[0076] It is understandable that, according to actual needs, the large paper tube 300 can also be formed by winding more layers of paper tapes. It only requires placing more paper rolls accordingly and making corresponding improvements to the double-layer paper tape gluing mechanism 80 and the double-layer paper tape heating mechanism 90.

[0077] Please refer to Figures 16 to 18 Specifically, in one embodiment, the large paper tape 400 located on the upper side of the double-layer paper tape is staggered with the large paper tape 400 located on the lower side, and one side of the large paper tape 400 on the upper side is reserved as an overlap for a subsequent large paper tube, while the other side of the large paper tape 400 on the lower side is also reserved as an overlap for a subsequent large paper tube, so that each part on the large paper tube 300 finally rolled is a double-layer paper tape structure.

[0078] Preferably, in one embodiment, two glue guns are provided in the double-layer paper tape gluing mechanism 80, and the two glue guns are used to spray glue to the two corresponding bonding positions on the paper tape. During production, one layer of the large paper tape 400 first passes through the double-layer paper tape gluing mechanism 80 to be coated with hot melt glue at the two bonding positions 500, and then the two layers of the large paper tape 400 enter the double-layer paper tape heating mechanism 90 for heating, and the two layers of the large paper tape 400 are connected together to form a double-layer paper tape. Then the double-layer paper tape enters the gluing mechanism and the forming mechanism in sequence to realize the forming of the double-layer paper tube.

[0079] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 includes a heating block 91 and a heating paper tape channel 92 opened in the heating block 91, and the heating paper tape channel 92 is used for the double-layer paper tape to flow through, that is, when the double-layer paper tape flows into the double-layer paper tape heating mechanism 90, it specifically flows into the heating paper tape channel 92 and gradually flows out of the double-layer paper tape heating mechanism 90 along the heating paper tape channel 92. The heating paper tape channel 92 extends along the length direction of the heating block 91.

[0080] The length direction of the heating block 91 is as follows: Fig.17 In the X2 direction, the width direction of the heating block 91 is as follows Fig.17 In the Y3 direction, the thickness direction of the heating block 91 is Fig.17 Z2 direction shown.

[0081] Along the width direction of the heating block 91, the heating block 91 is divided into a high-temperature heating block unit 911 and a low-temperature heating block unit 912 that are spaced apart from each other. The high-temperature heating block unit 911 refers to a unit with a relatively higher working temperature when in operation; the low-temperature heating block unit 912 refers to a unit with a relatively lower working temperature when in operation. In other words, the heating temperatures on both sides of the heating block 91 along its width direction are different, with one side having a relatively higher temperature and the other side having a relatively lower temperature. In addition, the high-temperature heating block unit 911 and the low-temperature heating block unit 912 are spaced apart from each other, so that heat is not easily conducted to each other.

[0082] The heating paper tape channel 92 is located at the high temperature heating block unit 911 and the low temperature heating block unit 912, that is, a part of the heating paper tape channel 92 is located on the high temperature heating block unit 911, and the other part is located on the low temperature heating block unit 912. The high temperature heating block unit 911 is set corresponding to one bonding position 500 of the double-layer paper tape, and the low temperature heating block unit 912 is set corresponding to another bonding position of the double-layer paper tape. In other words, when the double-layer paper tape flows into the heating paper tape channel 92, one bonding position 500 on the double-layer paper tape is located in the high temperature heating block unit 911, and the high temperature heating block unit 911 performs high temperature heating; and the other bonding position 500 on the double-layer paper tape is located in the low temperature heating block unit 912, and the low temperature heating block unit 11 performs low temperature positioning.

[0083] It is understandable that since the double-layer paper tape is in a flat state when it is heated, if a whole heating block is used directly to completely bond the double-layer paper tape, it will cause the double-layer paper tape to be difficult to roll into a circle during the subsequent rolling process, affecting the smooth forming of the double-layer paper tube.

[0084] In this embodiment, the heating block 91 is changed to a split design, and the two sides can be heated at different temperatures. One side is glued tightly at high temperature to ensure the firmness of the bonding between the double-layer paper tapes; while the other side is positioned at low temperature, which will not completely stick the glue, thereby facilitating the subsequent winding of the double-layer paper tape and facilitating the smooth forming of the double-layer paper tube.

[0085] The high temperature heating block unit 911 and the low temperature heating block unit 912 can adopt any heating structure as long as they can achieve constant temperature heating, such as a resistance wire structure, which is well known in the art and will not be described here. The specific heating temperature adopted by the high temperature heating block unit 911 and the low temperature heating block unit 912 can be selected according to specific production requirements or specific experimental data. It only needs one side to meet the high temperature sol to ensure that the double-layer paper tape is firmly bonded, and the other side can be low-temperature positioned so that the glue can be fixed and positioned.

[0086] Preferably, in one embodiment, the heating tape channel 92 is opened on the surface of the heating block 91. Specifically, in one embodiment, the heating tape channel 92 is opened on the top surface of the heating block 91.

[0087] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 further includes a pressing shaft 93, which is located above the heating paper tape channel 92 and is used to limit the double-layer paper tape. By setting the pressing shaft 93, the double-layer paper tube can be pressed down to a certain extent, thereby improving the bonding and fixing effect.

[0088] Preferably, in one embodiment, the pressing shaft 93 extends along the width direction of the heating block 91, that is, the axis of the pressing shaft 93 is parallel to the width direction of the heating block 91. In this way, the pressing shaft 93 can roll and press down the double-layer paper tape, thereby better avoiding wear on the double-layer paper tape.

[0089] Preferably, in one embodiment, a plurality of pressing shafts 93 are sequentially arranged at intervals along the length direction of the heating block 91 , so as to further improve the pressing effect.

[0090] It is understandable that during the production process, the double-layer paper tape (double-layer paper tube) may be laterally offset due to various factors, resulting in a certain offset difference in the front and rear positions of the double-layer paper tape (double-layer paper tube). Therefore, it is often necessary to adjust the position of the heating block 91 to adapt to the positions of the front and rear double-layer paper tapes (double-layer paper tubes).

[0091] Preferably, in one embodiment, the pressing shaft 93 is connected to the heating block 91. Thus, the position of the pressing shaft 93 can be adjusted synchronously while adjusting the position of the heating block 91, and the pressing shaft 93 does not need to be adjusted additionally, thereby improving the adjustment efficiency.

[0092] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 further includes a shell 94, and the heating block 91 is installed in the shell 94, so as to better ensure safety.

[0093] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 further includes a heating mechanism sliding unit 95, and the housing 94 is disposed on a slide of the heating mechanism sliding unit 95, and the sliding direction of the slide is the width direction of the heating block 91. The arrangement of the heating mechanism sliding unit 95 can facilitate the adjustment of the lateral position of the heating block 91 to better adapt to the offset of the double-layer paper tape (double-layer paper tube). Specifically, the heating mechanism sliding unit 95 can adopt any desired structure, such as an electric slide, a pneumatic slide, etc., and can even be manually driven, as long as it can drive the heating block 91 to move horizontally.

[0094] Please refer to Figures 19 to 21 Preferably, in one embodiment, the second glue coating mechanism 40 includes a large paper tape guide plate 41, a first glue gun 42, a second glue gun 43 and a connecting plate 44. The large paper tape guide plate 41 is provided with a large paper tape guide channel 411, and the large paper tape guide channel 411 is used to accommodate large paper tapes. During production, a double-layer large paper tape can flow through the large paper tape guide plate 41 through the large paper tape guide channel 411. The gun head 421 of the first glue gun 42 is aligned with the edge of the large paper tape guide channel 411, so that during production, the glue sprayed from the gun head 421 of the first glue gun 42 is coated on the edge of the paper tape (i.e., the overlap of the paper tape), and the glue sprayed from the first glue gun 42 is mainly used for the subsequent rolling and bonding of the paper tape. The gun head 431 of the second glue gun 43 is set to align with the central area of ​​the large paper tape paper guide channel 411, so that during production, the glue sprayed from the gun head 431 of the second glue gun 43 is coated on the central area of ​​the paper tape. The glue sprayed from the second glue gun 43 is mainly used for subsequent bonding and fixing of the paper tape and the small paper tube inside.

[0095] That is to say, the second gluing mechanism 40 provided in this embodiment is mainly used for gluing the large paper tube located on the outside of the multiple paper tubes. When gluing the paper tape before it is formed into the large paper tube 300, the first glue gun 42 and the second glue gun 43 will be used to glue two positions in the paper tape, one position is used for rolling and forming the paper tape, and the other position is used for bonding and fixing the paper tape to the small paper tube 200 inside.

[0096] The paper tape is mainly divided into: the central area located in the center and the edges located on both sides of the central area along its width direction. The first glue gun 42 can spray glue only on the edge on one side. The specific spraying position of the second glue gun 43 in the central area 220 can be selected according to actual production needs (it can be selected according to the specific position or number of small paper tubes to be glued).

[0097] The connecting plate 44 is connected to the side 412 of the large paper tape paper guide 41, and the first glue gun 42 and / or the second glue gun 43 are connected to the large paper tape paper guide 41 through the connecting plate 44. That is, in this embodiment, at least one of the first glue gun 42 and the second glue gun 43 is directly connected to the large paper tape paper guide 41 through the connecting plate 44, and is directly installed on the large paper tape paper guide 41. Since the connecting plate 44 is connected to the side 412 of the large paper tape paper guide 41, the paper tape will not be blocked, and the normal conveyance of the paper tape will not be affected.

[0098] It is understandable that during the production process, the paper tape may be laterally offset due to various factors, resulting in a certain offset difference in the front and rear positions of the paper tape (paper tube). In order to compensate for this offset difference in the front and rear positions, the large paper tape guide paperboard 41 is usually moved laterally to adjust the position of the paper tape in the large paper tape guide paperboard 41. After adjusting the position of the large paper tape guide paperboard 41, the positions of the first glue gun 42 and the second glue gun 43 need to be adjusted synchronously to ensure the accuracy of the glue spraying position. By setting the connecting plate 44, the first glue gun 42 and / or the second glue gun 43 are connected to the large paper tape guide paperboard 41, so that when the position of the large paper tape guide paperboard 41 is adjusted, the first glue gun 42 and / or the second glue gun 43 will be driven to move synchronously, so that there is no need to adjust the position of the first glue gun 42 and / or the second glue gun 43 separately, and the first glue gun 42 and / or the second glue gun 43 do not need to be aligned with the large paper tape guide paperboard 41, so that the difficulty of adjustment can be reduced. Furthermore, during the maintenance process, the first glue gun 42 and / or the second glue gun 43 are connected to the large paper tape guide paper board 41 as a whole, which can also reduce the difficulty of maintenance and installation.

[0099] It should be noted that when the first glue gun 42 and the second glue gun 43 are both connected to the large paper tape guide paperboard 41: the first glue gun 42 and the second glue gun 43 can be connected to the same connecting plate 44; or, the first glue gun 42 and the second glue gun 43 can be connected to the large paper tape guide paperboard 41 through different connecting plates 44.

[0100] Preferably, in one embodiment, the large paper tape paper guide channel 411 extends along the length direction of the large paper tape paper guide 41. The second gluing mechanism 40 also includes a second gluing mechanism sliding unit 45, and the large paper tape paper guide 41 is arranged on a slide 451 of the second gluing mechanism sliding unit 45, and the sliding direction of the slide 451 is along the width direction of the large paper tape paper guide 41. The arrangement of the second gluing mechanism sliding unit 45 can facilitate the adjustment of the position of the large paper tape paper guide 41. Specifically, the second gluing mechanism sliding unit 45 can adopt any desired structure, such as an electric slide, a pneumatic slide, etc., and can even be manually driven, as long as it can drive the large paper tape paper guide 41 to move horizontally.

[0101] The length direction of the large paper tape guide paper 41 is Fig. 20 In the X3 direction, the width direction of the large paper tape guide 41 is Fig. 20 In the Y3 direction, the thickness direction of the large paper tape guide paper 41 is Fig. 20 Z3 direction is shown.

[0102] Preferably, in one embodiment, the second glue gun 43 is connected to the large paper tape guide paper board 41 through the connecting plate 44. That is, in this embodiment, at least the second glue gun 43 is installed on the large paper tape guide paper board 41 through the connecting plate 44.

[0103] Preferably, in one embodiment, the second glue gun 43 is rotatably connected to the connecting plate 44, and the rotation axis of the second glue gun 43 is parallel to the width direction of the large paper tape guide paperboard 41. By setting the second glue gun 43 as a rotatable structure, the position of the second glue gun 43 can be adjusted when the equipment is shut down, and the second glue gun 43 can also be easily repaired and cleaned. For example, when the equipment is shut down, the second glue gun 43 can be rotated to rotate the gun head 431 of the second glue gun 43 to the standby position, so as to avoid the waste of glue; secondly, it can also avoid excessive glue coating on the paper tape when the equipment is shut down, which affects the stability of subsequent molding. And during maintenance, it is only necessary to rotate the second glue gun 43 to clean and maintain the gun head 431, which reduces the difficulty of maintenance.

[0104] Preferably, in one embodiment, a positioning structure 46 is provided between the second glue gun 43 and the connecting plate 44, and the positioning structure 46 includes a positioning protrusion and a positioning hole 461 matching the positioning protrusion. The positioning protrusion is provided on one of the second glue gun 43 and the connecting plate 44, and the positioning hole 461 is provided on the other of the second glue gun 43 and the connecting plate 44. That is, when the positioning protrusion is provided on the second glue gun 43, the positioning hole 461 is provided on the connecting plate 44; when the positioning protrusion is provided on the connecting plate 44, the positioning hole 461 is provided on the second glue gun 43. There are at least two positioning holes 461, and the two positioning holes 461 are provided at intervals from each other along the rotatable direction of the second glue gun 43. Therefore, by rotating the second glue gun 43, the positioning protrusion is inserted into different positioning holes 461, so as to realize the rapid adjustment and positioning of the position of the second glue gun 43. For example, when the second glue gun 43 is rotated so that the positioning protrusion is inserted into one of the positioning holes 461, the second glue gun 43 is located in the working position, thereby enabling rapid adjustment and positioning of the working position; and when the second glue gun 43 is rotated so that the positioning protrusion is inserted into another of the positioning holes 461, the second glue gun 43 is located in the standby position, thereby enabling rapid adjustment and positioning of the standby position.

[0105] Preferably, in one embodiment, the second glue gun 43 is rotatably connected to the connecting plate 44 via a transition plate 47. The positioning hole 461 is provided on the transition plate 47, and the positioning protrusion is provided on the connecting plate 44.

[0106] Preferably, in one embodiment, the first glue gun 42 and the second glue gun 43 are respectively connected to the large paper tape guide paper 41 through the connecting plate 44. That is, in this embodiment, the first glue gun 42 and the second glue gun 43 are both connected to the large paper tape guide paper 41.

[0107] Preferably, in one embodiment, the first glue gun 42 is a hot melt glue gun, and the second glue gun 43 is a cold glue gun. That is, the glue stored in the glue box connected to the first glue gun 42 is hot melt glue, so the glue sprayed by the first glue gun 42 is hot melt glue; the glue stored in the glue box connected to the second glue gun 43 is cold water glue, so the glue sprayed by the second glue gun 43 is cold water glue.

[0108] Preferably, in one embodiment, the second glue gun 43 is located in front of the first glue gun 42. The front is based on the conveying direction of the paper tape. That is, when the paper tape flows on the large paper tape guide 41, the paper tape will first pass through the position of the second glue gun 43, and then pass through the position of the first glue gun 42.

[0109] Specifically, in one embodiment, the second molding mechanism 50 may also adopt a structure of conveying and molding with a cloth belt.

[0110] Please refer to Figure 22 to Figure 25 Preferably, in one embodiment, the paper tube forming unit 100 further includes a pressing block structure 103, the pressing block structure 103 includes a pressing block 1031 and an air hole 1032 arranged on the pressing block 1031, the pressing block 1031 is located at the rear side of the second forming mechanism 50, wherein the rear side is based on the conveying direction of the large paper tube 300. That is to say, when the large paper tube 200 flows out from the discharge port of the second forming mechanism 50, it will flow through the area where the pressing block 1031 is located. And the pressing block 1031 is extended along the conveying direction of the paper tube, that is, the pressing block 1031 has a certain length along the conveying direction of the paper tube 200, so as to improve the compacting effect on the large paper tube 300.

[0111] The air hole 1032 is arranged corresponding to the bonding part of the large paper tube 300, that is, when the pressing block 1031 is installed, the air hole 1032 on the pressing block 1031 is facing the overlap of the large paper tube 300. The air hole 1032 is used to connect with an external air source to blow airflow to the bonding part of the large paper tube 300. Among them, the external air source can be any device that can provide stable airflow power. Since the air hole 1032 is facing the bonding part of the large paper tube 300, and the air hole 1032 is connected to the external air source, the airflow provided by the external air source can be blown to the bonding part of the large paper tube 300 through the air hole 1032, thereby applying pressure to the bonding part of the large paper tube 300, allowing the glue to be further adhered, so as to prevent the large paper tube 300 from loosening and opening after flowing out of the forming mechanism, so as to shape the large paper tube 300.

[0112] That is, in this embodiment, by additionally arranging a pressing block 1031 at the rear side of the second forming mechanism 50, a certain airflow can be blown to the large paper tube 300 through the air hole 1032 in the pressing block 1031, so as to provide a certain pressure to the large paper tube 300, increase the forming distance and time of the large paper tube 300, and thus improve the forming stability of the large paper tube 300. In addition, since the pressure is provided to the large paper tube 300 by the airflow, the wear of the large paper tube 300 can be avoided as much as possible. It can be understood that in order to ensure the forming of the large paper tube 300, the air pressure provided to the bonding part of the large paper tube 300 through the air hole 1032 should not be too large, and it is sufficient to provide a slight pressure to prevent the large paper tube 300 from loosening, so as to avoid the large paper tube 300 from being squeezed and deformed inward.

[0113] Preferably, in one embodiment, the pressing block 1031 is in the shape of a long strip, and the length direction of the pressing block 1031 is along the conveying direction of the large paper tube 300. In this way, the large paper tube 300 can be better shaped, and the arrangement of the pressing block 1031 is also convenient.

[0114] Preferably, in one embodiment, the air holes 1032 include connecting air holes 10321 and blowing holes 10322, and the connecting air holes 10321 are used to connect to the external air source. Specifically, the connecting air holes 10321 and the external air source can be connected through a pipeline. The blowing holes 10322 are arranged corresponding to the bonding position of the paper tube 200. Along the length direction of the pressing block 1031, the blowing holes 10322 are sequentially arranged in multiple groups, and each of the blowing holes 10322 is respectively connected to the connecting air holes 10321. That is to say, in this embodiment, specifically, the external air source provides airflow to the connecting air holes 10321, and then the airflow flows into each of the blowing holes 10322, and then flows to the bonding position of the paper tube 200. Along the length direction of the pressing block 1031 , a plurality of groups of blowing holes 10322 are provided, so that during the flow of the paper tube 200 , pressure can be continuously applied to the paper tube 200 to prevent the paper tube 200 from loosening and opening.

[0115] Preferably, in one embodiment, each group of the blowing holes 10322 includes two blowing holes 10322, and the two blowing holes 10322 in each group of the blowing holes 10322 are spaced apart from each other along the width direction of the pressing block 1031, so that each group of the blowing holes 10322 can apply pressure to the paper tube 200 at two points along the width direction at the same time to ensure the shaping effect.

[0116] The length direction of the pressing block 1031 is as follows: Fig. 22In the X4 direction, the width direction of the pressing block 1031 is as follows Fig. 22 In the Y4 direction, the thickness direction of the pressing block 1031 is as follows: Fig. 22 Z4 direction shown.

[0117] Preferably, in one embodiment, a circular arc groove 10311 is provided on one side of the pressing block 1031 facing the large paper tube 300, and the circular arc groove 10311 is extended along the length direction of the pressing block 1031 and penetrates the pressing block 1031, that is, the circular arc groove 10311 is a structure with both ends completely open, and the paper tube 200 can smoothly flow into and out of the circular arc groove 10311. The blowing hole 10322 is located on the inner side of the circular arc groove 10311, so that the air flow is blown out from the circular arc groove 10311. Through the setting of the circular arc groove 10311, the large paper tube 300 can be better adapted and avoided.

[0118] Preferably, in one embodiment, the pressing block structure 103 further includes a connecting plate 1033 and a mounting plate 1034, the pressing block 1031 is arranged on the connecting plate 1033, and the connecting plate 1033 can be lifted and lowered on the mounting plate 1034. This structure can drive the pressing block 1031 to be lifted and lowered, so as to facilitate the maintenance and installation of the unit. Specifically, the connecting plate 1033 can be connected to any driving mechanism (such as a cylinder, an oil cylinder, etc.), so that the driving mechanism provides power to drive the connecting plate 1033 to be lifted and lowered, thereby driving the pressing block 1031 to be lifted and lowered.

[0119] Preferably, in one embodiment, the pressing block 1031 is detachably arranged on the connecting plate 1033, so as to facilitate the inspection and replacement of the pressing block 1031. Specifically, in one embodiment, the pressing block 1031 and the connecting plate 1033 can be detachably connected by screws.

[0120] Preferably, in one embodiment, a guide structure 1035 is provided between the connecting plate 1033 and the mounting plate 1034, and the guide structure 1035 includes a guide rail 10351 and a slider 10352. The guide rail 10351 is vertically provided on the mounting plate 1034, and the connecting plate 1033 is slidably connected to the guide rail 10351 through the slider 10352. By providing the guide structure 1035, the lifting direction of the connecting plate 1033 can be guided more stably.

[0121] Preferably, in one embodiment, a limiting member 1036 is provided on the mounting plate 1034, and the limiting member 1036 is used to block the connecting plate 1033 to limit the sliding position of the connecting plate 1033. Specifically, in one embodiment, the limiting member 1036 is provided on the top of the mounting plate 1034 to limit the height of the connecting plate 1033 to rise.

[0122] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A paper tube forming unit, characterized in that: Including small paper tube forming machine and large paper tube forming machine; The small paper tube forming machine is used to form small paper tubes, and the small paper tube forming machine comprises a first raw material placement position, a first gluing mechanism, and a first forming mechanism which are arranged in sequence; The large paper tube forming machine is used to form a large paper tube, and the large paper tube forming machine comprises a second raw material placement position, a second gluing mechanism, and a second forming mechanism which are arranged in sequence; The second forming mechanism is located at the rear side of the discharge position of the small paper tube forming machine, and the small paper tube formed and sent out from the small paper tube forming machine can enter the forming cavity of the second forming mechanism.

2. The paper tube forming unit according to claim 1, characterized in that: The first gluing mechanism is provided with a plurality of small paper tape channels, and each of the small paper tape channels is correspondingly provided with a small paper tape glue gun; The first forming mechanism is provided with a plurality of small paper tube forming cavities, and the small paper tube forming cavities are arranged in one-to-one correspondence with the small paper tape channels; A plurality of small paper rolls are placed in the first raw material placement position; or a small paper tape slitting mechanism is also provided between the first raw material placement position and the first gluing mechanism.

3. The paper tube forming unit according to claim 2, characterized in that: A pre-pressing mechanism is also arranged between the first gluing mechanism and the first forming mechanism. The pre-pressing mechanism includes a pre-pressing bottom plate and a pre-pressing block. A pre-pressing channel is opened on the pre-pressing bottom plate. The pre-pressing channels are arranged in a one-to-one correspondence with the small paper tape channels. A pre-pressing block is correspondingly arranged above each pre-pressing channel.

4. The paper tube forming unit according to claim 2, characterized in that: The small paper tube forming machine also includes a paper tube gathering mechanism, which is located at the rear side of the first forming mechanism, and includes a gathering guide paper board, in which a guide channel for the small paper tube to flow through is opened; Along the conveying direction of the small paper tube, the guide channel includes a first channel and a second channel which are connected in sequence; Along the conveying direction of the small paper tube, the first channel is a structure with gradually decreasing width; The width of the second channel is not greater than the minimum width of the first channel.

5. The paper tube forming unit according to claim 1, characterized in that: The first forming mechanism is provided with a cloth belt conveying mechanism, and the cloth belt conveying mechanism is used to drive the small paper belt to move.

6. The paper tube forming unit according to claim 1, characterized in that: A double-layer paper tape gluing mechanism and a double-layer paper tape heating mechanism are also provided between the second raw material placement position and the second gluing mechanism; The double-layer paper tape gluing mechanism is used to spray glue onto one layer of paper tape or two layers of paper tape; The double-layer paper tape heating mechanism is used to heat and bond the double-layer paper tape; Two large paper rolls are placed in the second raw material placement position; or a large paper tape slitting mechanism is also arranged between the second raw material placement position and the double-layer paper tape gluing mechanism.

7. The paper tube forming unit according to claim 6, characterized in that: The double-layer paper tape gluing mechanism is provided with two glue guns, and the two glue guns are used to spray glue to two corresponding bonding positions on the paper tape.

8. The paper tube forming unit according to claim 7, characterized in that: The double-layer paper tape heating mechanism comprises a heating block and a large paper tape channel opened in the heating block; The large paper tape channel extends along the length direction of the heating block; Along the width direction of the heating block, the heating block is divided into a high temperature heating block unit and a low temperature heating block unit which are spaced apart from each other; The large paper tape channel is located at the high temperature heating block unit and the low temperature heating block unit. The high temperature heating block unit is arranged corresponding to one bonding position of the paper tape, and the low temperature heating block unit is arranged corresponding to another bonding position of the paper tape.

9. The paper tube forming unit according to claim 1, characterized in that: The second glue coating mechanism includes a large paper tape guide plate, a first glue gun and a second glue gun; The large paper tape guide paper board is provided with a large paper tape guide channel; The gun head of the first glue gun is aligned with the edge of the paper guide channel of the large paper tape; The gun head of the second glue gun is aligned with the central area of ​​the large paper tape paper guide channel.

10. The paper tube forming unit according to claim 1, characterized in that: The large paper tube forming machine also includes a pressing block structure, which includes a pressing block and air holes arranged on the pressing block; The pressing block is located at the rear side of the second forming mechanism and is extended along the conveying direction of the large paper tube; The air holes are arranged corresponding to the bonding positions of the large paper tubes, and the air holes are used to be connected to an external air source so as to blow airflow toward the bonding positions of the large paper tubes.

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