A paper tube forming unit

Abstract

The present invention provides a paper tube forming 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 comprises a first raw material placement position, a first gluing mechanism, and a first forming mechanism arranged in sequence. The large paper tube forming machine is used to form large paper tubes and comprises a second raw material placement position, a second gluing mechanism, and a second forming mechanism arranged in sequence. The second forming mechanism is located behind the discharge position of the small paper tube forming machine, and the small paper tubes formed and discharged from the small paper tube forming machine can enter the forming cavity of the second forming mechanism. Compared with the existing technology, the paper tube forming unit provided by the present invention can realize the automatic production of multiple paper tubes, with a high degree of automation and high 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 from paper strips. They have a wide range of uses in production and life. For example, they can be used in tobacco products, as wrappers for tobacco products, or as other functional structures.

[0003] At present, paper tubes are made through automated processing of paper tube forming machines. When the paper tape moves in the paper tube forming machine, the paper tape is coated with glue and rolled by 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 existing technology can only realize the forming of 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 solved urgently in this field. Summary of the Invention

[0006] In response to 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 behind 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;

[0008] 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;

[0009] 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;

[0010] 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.

[0011] Preferably, 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;

[0012] 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 a one-to-one correspondence with the small paper tape channels;

[0013] A plurality of small paper rolls are placed in the first raw material placement position; or a small paper tape slitting mechanism is further provided between the first raw material placement position and the first gluing mechanism.

[0014] Preferably, a pre-pressing mechanism is further provided between the first gluing mechanism and the first forming mechanism, the pre-pressing mechanism comprising a pre-pressing base plate and a pre-pressing block, a pre-pressing channel is provided on the pre-pressing base plate, the pre-pressing channel is arranged in one-to-one correspondence with the small paper tape channel, and a pre-pressing block is correspondingly provided above each pre-pressing channel.

[0015] Preferably, the small paper tube forming machine further comprises a paper tube gathering mechanism, the paper tube gathering mechanism being located at the rear side of the first forming mechanism, the paper tube gathering mechanism comprising a gathering paper guide plate, the gathering paper guide plate being provided with a guide channel for the small paper tube to flow through;

[0016] Along the conveying direction of the small paper tube, the guide channel includes a first channel and a second channel that are connected in sequence;

[0017] Along the conveying direction of the small paper tube, the first channel has a gradually decreasing width structure;

[0018] The width of the second channel is no greater than the minimum width of the first channel.

[0019] Preferably, a cloth tape conveying mechanism is provided in the first forming mechanism, and the cloth tape conveying mechanism is used to drive the small paper tape to move.

[0020] 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;

[0021] The double-layer paper tape gluing mechanism is used to spray glue onto one or two layers of paper tape;

[0022] The double-layer paper tape heating mechanism is used to heat and bond the double-layer paper tape;

[0023] Two large paper rolls are placed in the second raw material placement position; or a large paper tape slitting mechanism is further provided between the second raw material placement position and the double-layer paper tape gluing mechanism.

[0024] Preferably, the double-layer paper tape gluing mechanism is provided with two glue guns, and the two glue guns are used to spray glue onto two corresponding bonding positions on the paper tape.

[0025] Preferably, the double-layer paper tape heating mechanism includes a heating block and a large paper tape channel opened in the heating block;

[0026] The large paper tape channel extends along the length direction of the heating block;

[0027] 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 that are spaced apart from each other;

[0028] 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 set corresponding to one bonding position of the paper tape, and the low temperature heating block unit is set corresponding to another bonding position of the paper tape.

[0029] Preferably, the second gluing mechanism comprises a large paper tape guide plate, a first glue gun and a second glue gun;

[0030] The large paper tape guide plate is provided with a large paper tape guide channel;

[0031] The gun head of the first glue gun is aligned with the edge of the paper guide channel of the large paper tape;

[0032] The gun head of the second glue gun is aligned with the central area of ​​the large paper tape paper guide channel.

[0033] 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 provided on the pressing block;

[0034] The pressing block is located at the rear side of the second forming mechanism and extends along the conveying direction of the large paper tube;

[0035] 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 air toward the bonding positions of the large paper tubes.

[0036] 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 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 arranged in sequence; the second forming mechanism is located behind the discharge position of the small paper tube forming machine, and the small paper tubes 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 small paper tubes and the large paper tubes can be automatically processed and formed, 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 tubes can be automatically fed into the second forming mechanism, thereby feeding the small paper tubes into the inside of 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

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0038] Figure 1 A schematic diagram of the three-dimensional structure of a paper tube forming unit provided in one embodiment;

[0039] Figure 2 for Figure 1 A front view of the paper tube forming unit shown;

[0040] 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;

[0041] Figure 4 A schematic diagram of the three-dimensional structure of a pre-pressing mechanism provided in one embodiment;

[0042] Figure 5 A front view of a cloth belt conveying mechanism provided in one embodiment;

[0043] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the mechanism shown with some structures removed;

[0044] Figure 7 for Figure 6a front view of the structure shown;

[0045] Figure 8 A schematic diagram of the three-dimensional structure of a paper tube gathering mechanism provided in one embodiment;

[0046] Figure 9 for Figure 8 A schematic diagram of the three-dimensional structure of the bottom plate shown;

[0047] Figure 10 for Figure 9 a top view of the bottom plate shown;

[0048] Figure 11 For the Figure 10 Schematic diagram of the cross-sectional structure of BB shown;

[0049] Figure 12 for Figure 9 a right side view of the bottom plate shown;

[0050] Figure 13 for Figure 9 Left side view of the bottom plate shown;

[0051] Figure 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;

[0052] Figure 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;

[0053] Figure 16 A schematic diagram of a cross-sectional structure of a double-layer paper tape provided in one embodiment;

[0054] Figure 17 A schematic diagram of the three-dimensional structure of a double-layer paper tape heating mechanism provided in one embodiment;

[0055] Figure 18 for Figure 17 Schematic diagram of the three-dimensional structure of the heating block and the pressing shaft;

[0056] Figure 19 A schematic diagram of the three-dimensional structure of a second gluing mechanism provided in one embodiment;

[0057] Figure 20 A schematic diagram of the three-dimensional structure of a second gluing mechanism provided in another embodiment;

[0058] Figure 21 for Figure 20 Schematic diagram of the three-dimensional structure of the connecting plate and the transition plate;

[0059] Figure 22A schematic diagram of the three-dimensional structure of a compact structure provided by an embodiment;

[0060] Figure 23 for Figure 22 A schematic diagram of the three-dimensional structure of the pressing block shown;

[0061] Figure 24 for Figure 23 A schematic diagram of the three-dimensional structure of the pressing block shown in another angle;

[0062] Figure 25 Schematic diagram of the structure of the air holes in the briquette blowing air toward the paper tube in one embodiment. DETAILED DESCRIPTION

[0063] In order to help those skilled in the art 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 embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0064] It should be noted that when a component is referred to as being “fixed on”, “mounted 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.

[0065] 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 accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0067] 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 efficacy and purpose that can be achieved by this application.

[0068] The present invention provides a paper tube forming machine unit, 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 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 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 tubes 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 small paper tubes and the large paper tubes can be automatically processed and formed, 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 tubes can be automatically fed into the second forming mechanism, thereby feeding the small paper tubes into the inside of 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.

[0069] Please refer to Figure 1 、 Figure 2 as well as Figure 25 In one embodiment, a paper tube forming unit 100 is provided, which is mainly used to realize the automated production of multiple paper tubes.

[0070] 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 small paper tubes 200, and the large paper tube forming machine 102 is used to form large paper tubes 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.

[0071] 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 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 onto the small paper tape, and the first forming mechanism 30 is used to roll the small paper tape into the small paper tube.

[0072] 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.

[0073] The second forming mechanism 50 is located behind the discharge point of the small paper tube forming machine 101, and the small paper tubes 200 formed and discharged from the small paper tube forming machine 101 can enter the forming cavity of the second forming mechanism 50. Specifically, after the small paper tube forming machine 101 forms and discharges the small paper tubes 200, they are fed into the second forming mechanism 50, where they are received by the second forming mechanism 50. Since the second forming mechanism 50 is also used to roll and form the large paper tubes 300, the final paper tubes formed and discharged from the second forming mechanism 50 are multiple paper tubes (i.e., a large paper tube 300 is additionally provided with a small paper tube 200).

[0074] 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, meeting the production needs of multiple paper tubes, and having a high degree of automation and high production efficiency.

[0075] Please refer to Figure 2 and Figure 3 Preferably, in one embodiment, the first gluing mechanism 20 is provided with multiple (at least two) small paper tape channels 21, and each small paper tape channel 21 is correspondingly provided with a small paper tape glue gun 23. That is, in this embodiment, multiple small paper tapes can flow through the first gluing mechanism 20 simultaneously, and the first gluing mechanism 20 can spray glue onto the overlapped joints of each small paper tape. The first forming mechanism 30 is provided with multiple small paper tube forming cavities, each corresponding to each of the small paper tape channels 21. That is, in this embodiment, the number and position of the small paper tube forming cavities match the number and position of the small paper tape channels 21, so that the first forming mechanism 30 can simultaneously roll multiple small paper tapes, thereby completing the synchronous rolling and forming 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 that match the number of 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.

[0076] 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. During the production process, the paper tape slitting mechanism slits the paper tape into a desired number of small paper tapes of a desired width, which are then fed into the first gluing mechanism 20 in the corresponding number of small paper tapes.

[0077] 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 .

[0078] Specifically, in one embodiment, the first gluing mechanism 20 includes a small paper tape gluing paper guide 22 and a small paper tape glue gun 23. The small paper tape channel 21 is formed on the small paper tape gluing paper guide 22 and extends along the length of the small paper tape gluing paper guide 22. The small paper tape glue gun 23 is connected to a glue tank 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 is sprayed into the overlapping edge of the small paper tape.

[0079] The length direction of the small paper tape glue guide 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.

[0080] Preferably, in one embodiment, the small paper tape gluing paper guide plate 22 is further provided with an inspection and cleaning hole 221, which is provided through the small paper tape gluing paper guide plate 22 along the thickness direction of the small paper tape gluing paper guide plate 22. The inspection and cleaning hole 221 is provided to align with the gun tip of the small paper tape glue gun 23, and each small paper tape glue gun 23 is provided with a corresponding inspection and cleaning hole 221. It is understandable that when the small paper tape glue gun 23 is in operation, glue residue is easily left on the gun tip of the small paper tape glue gun 23, which may cause problems such as clogging of the gun tip, affecting the normal gluing of the small paper tape glue gun 23. Therefore, the gun tip of the small paper tape glue gun 23 needs to be cleaned and maintained frequently. 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. Instead, the cleaning component only needs to be passed through the inspection and cleaning hole 221 from the back side of the small paper tape glue guide paper board 22 to clean the gun head of the small paper tape glue gun 23. This can improve the cleaning and maintenance efficiency of the small paper tape glue gun 23 and reduce the difficulty of cleaning and maintenance.

[0081] 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 paper board 22 is arranged on the 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 paper board 22. The setting of the small paper tape gluing sliding unit can facilitate the adjustment of the lateral position of the small paper tape gluing guide paper board 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 paper board 22 to move laterally.

[0082] 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. 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. The pre-pressing channels 611 are arranged in a one-to-one correspondence with the small paper tape channels 21, and a pre-pressing block 62 is correspondingly provided 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, so the forming difficulty is greater. Through the setting of 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, 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.

[0083] Specifically, in one embodiment, three pre-compression channels 611 are provided, and three pre-compression blocks 62 are provided accordingly.

[0084] 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.

[0085] 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. Thus, when the first forming mechanism 30 rolls the small paper strip into shape, the core shaft 63 can press against the inner side of the small paper strip and provide 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 does not have problems such as concavity.

[0086] Please refer to Figures 5 to 7 Preferably, in one embodiment, the first forming mechanism 30 is provided with a cloth belt conveying mechanism 301, which 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 in front, thereby achieving continuous movement of the small paper belt (the small paper tube 200) in the entire small paper tube forming machine 101, allowing the paper roll in the first raw material placement position 1011 to be continuously unwound.

[0087] Specifically, in one embodiment, the fabric conveying mechanism 301 includes a drive unit (not shown), a driving wheel 31, a driven wheel 32, a fabric belt 33, and a guide plate 34. The drive unit is connected to the driving wheel 31 to drive the driving wheel 31 to rotate, and the drive unit can be a motor. The driven wheels 32 include a first driven wheel 321 and a second driven wheel 322, which are arranged parallel to each other and spaced apart.

[0088] The cloth belt 33 is provided with multiple (at least two) strips, 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, 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.

[0089] Specifically, in one embodiment, three cloth belts 33 are provided. 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 there are three cloth belts 33, when the driving unit drives the driving wheel 31 to rotate, the three cloth belts 33 can be driven to rotate synchronously.

[0090] The guide plate 34 is located behind the first driven wheel 321, with the rear and front sides being referenced to the direction of travel of the cloth belt 33. A receiving channel is defined on the guide plate 34. Along the width of the guide plate 34 (the width 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, spaced apart 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 a portion of the receiving channel has an arc-shaped cross-section, enabling the channel to bend the cloth belt 33 into an arc-shaped structure. As the cloth belt 33 moves the small paper belt, the cloth belt 33 bends into an arc-shaped structure, thereby bending the small paper belt into the small paper tube 200. In other words, the cloth tape 33 is used to both move the small paper tape and form the small paper tube 200. The cavity for forming the paper tube is formed by bending and winding the cloth tape 33. After the small paper tape is driven into the accommodating channel, the cloth tape 33 is guided by the accommodating channel and bent, thereby bending the small paper tape and forming the small paper tape into the small paper tube 200.

[0091] It should be noted that in other embodiments, the number of 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 accommodating channels in the guide plate 34 may also be changed accordingly. This embodiment is described using only three cloth belts 33 as an example.

[0092] The cloth belt conveyor mechanism 301 is equipped with multiple cloth belts 33, which can synchronously drive multiple small paper tubes 200 to meet the needs of conveying multiple paper tubes. Multiple receiving channels are also provided to guide and shape the paper tubes during conveyance, ensuring that the paper tubes do not deflect during conveyance.

[0093] 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 behind the driving wheel 31 and in front of the first driven wheel 321. The fabric belt 33 is wound around the adjusting wheel set 35 and the tensioning wheel set 36 before being wound back onto the first driven wheel 321. The arrangement of the adjusting wheel set 35 and the tensioning wheel set 36 allows for control and tensioning of each fabric belt 33, ensuring stable operation.

[0094] Preferably, in one embodiment, the adjustment wheel assembly 35 includes a first adjustment wheel 351, a second adjustment wheel 352, a third adjustment wheel 353, and a fourth adjustment wheel 354, which are sequentially arranged in parallel and spaced apart. The tensioning wheel assembly 36 includes a first tensioning wheel 361, a second tensioning wheel 362, and a third tensioning wheel 363, which are sequentially arranged in parallel and spaced apart. The first tensioning wheel 361 is located below the first adjustment wheel 351 and the second adjustment wheel 352, and is positioned between the first adjustment wheel 351 and the second adjustment wheel 352. The second tensioning wheel 362 is located below the second adjustment wheel 352 and the third adjustment wheel 353, and is positioned between the second adjustment wheel 352 and the third adjustment wheel 353. The third tensioning wheel 363 is located below the third adjustment wheel 353 and the fourth adjustment wheel 354, and is positioned between the third adjustment wheel 353 and the fourth adjustment wheel 354. The first fabric tape 331 passes through the tops of the first, second, and third adjustment wheels 351, 352, and 353, then wraps around the bottom of the third tensioning wheel 363 and exits through the top of the fourth adjustment wheel 354. The second fabric tape 332 passes through the tops of the first and second adjustment wheels 351, 352, then wraps around the bottom of the second tensioning wheel 362 and exits through the tops of the third and fourth adjustment wheels 353, 354. The third fabric tape 333 passes through the top of the first adjustment wheel 351, then wraps around the bottom of the first tensioning wheel 361 and exits through the tops of the second, third, and fourth adjustment wheels 352, 353, and 354. This structure ensures that the first, second, and third fabric tapes 331, 332, and 333 are properly tensioned. At the same time, the first cloth belt 331 , the second cloth belt 332 , and the third cloth belt 333 can be made of the same length and type, so that during maintenance, cloth belts of the same length and type can be used for maintenance and replacement.

[0095] Preferably, in one embodiment, the device 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 up and down. The second tensioning control unit 365 is connected to the second tensioning wheel 362 to drive the second tensioning wheel 362 up and down. The third tensioning control unit 366 is connected to the third tensioning wheel 363 to drive the third tensioning wheel 363 up and down. The provision of the tensioning control unit makes control of the tensioning wheels more convenient and simple. Furthermore, when the fabric belt 33 needs to be repaired or replaced, the fabric belt 33 can be loosened by simply raising the tensioning control unit, facilitating repair and replacement. After replacement, the fabric belt 33 can be tensioned by simply lowering the tensioning control unit. Specifically, the first tensioning control unit 364 , the second tensioning control unit 365 , and the third tensioning control unit 366 may all be cylinders.

[0096] Preferably, in one embodiment, the fabric conveying mechanism 301 further includes three fabric deviation adjustment rollers 37, with each fabric strip 33 passing through one of these rollers. The rollers 37 can be used to adjust the lateral position of the corresponding fabric strip 33 to prevent it from skewing. Specifically, the rollers 37 are manually adjustable and can be mounted on a side truss 38.

[0097] Preferably, in one embodiment, the cloth belt conveying mechanism 301 further includes a pressing plate 39, which is disposed above the guide plate 34 and is used to shape and limit the paper tube. The pressing plate 39 can limit the top adhesive joint of the small paper tube 200, thereby preventing the paper tube from loosening from the joint and affecting the forming of the paper tube. Specifically, in one embodiment, the glue sprayed by the first gluing mechanism 20 is hot melt adhesive, the pressing plate 39 is a hot press forming plate (a heating element, such as a resistance wire, can be provided inside the pressing plate 39), and the receiving channel has a top-opening structure, so that the pressing plate 39 can heat and melt the adhesive at the adhesive joint at the top of the small paper tube 200, ensuring the smooth forming of the small paper tube 200.

[0098] Preferably, in one embodiment, the pressing plate 39 is movably mounted above the guide plate 34. That is, the pressing plate 39 can move relative to the guide plate 34, thereby changing the positional relationship between the pressing plate 39 and the guide plate 34, thereby facilitating maintenance operations. Specifically, in one embodiment, the pressing plate 39 is reversibly mounted 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 operations are required, the pressing plate 39 can be simply flipped off the guide plate 34.

[0099] Preferably, in one embodiment, the lower surface of the pressing plate 39 is provided with three arc grooves 391, which are divided into a first arc groove, a second arc groove, and a third arc groove. 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. This structure can better adapt to the round small paper tube 200.

[0100] It is understood that in order to avoid interference between the small paper tubes 200 (small paper strips) when producing multiple small paper tubes 200 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 together).

[0101] 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 .

[0102] Please refer to Figures 8 to 15 The paper tube gathering mechanism 70 includes a gathering guide plate 71, and a guide channel 72 for the small paper tube 200 to flow through is provided in the gathering guide plate 71. Figure 10 The guide channel 72 includes a first guide channel 721 and a second guide channel 722 that are connected in sequence. The first guide channel 721 has a gradually decreasing width along the conveying direction of the small paper tubes 200. Specifically, at least one of the side walls 7211 of the first guide channel 721 is inclined inward. As multiple small paper tubes 200 flow through the first guide channel 721, the outermost small paper tubes 200 are restrained and guided by the side walls 7211 of the first guide channel 721. This guide guides the outermost small paper tubes 200 inward during their flow, thereby reducing the spacing between the small paper tubes 200.

[0103] 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, ensuring that each of the small paper tubes 200 can smoothly enter the first guide channel 721.

[0104] The width of the second guide channel 722 is no greater than the minimum width of the first guide channel 721. Therefore, after the small paper tubes 200 flow out of the first guide channel 721, the sidewalls of the second guide channel 722 continue to limit the outer small paper tubes 200, preventing them from spreading 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 portions of the second guide channel 722 can be configured to have a tapered width.

[0105] 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.

[0106] Specifically, in one embodiment, three small paper tubes 200 are required 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 no less than the overall width of the three spaced-apart small paper tubes 200, and the minimum width of the first guide channel 721 is no greater than the overall width of the three spaced-apart small paper tubes 200. Therefore, after the three small paper tubes 200 flow through the first guide channel 721, the outermost small paper tubes 200 are guided inward, thereby reducing the distance between the small paper tubes 200.

[0107] 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 is communicated with the first guiding channel 721, and the forming channel 7222 is communicated 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. Among them, 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 that the height of the small paper tube 200 flowing through the bottom wall unit can be guided to decrease, forming a height difference between the small paper tubes 200, so that a part of the small paper tubes 200 are located on the relatively upper side and a part of the small paper tubes 200 are located on the relatively lower side, thereby completing the change of the height of the small paper tube 200.

[0108] 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.

[0109] Preferably, the central bottom wall unit 722211 includes an inclined bottom wall 7222111 close to one side of the connecting channel 7221 and a parallel bottom wall 7222112 far from one side of 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 that the small paper tube 200 located in the center can be gradually guided 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.

[0110] 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. Here, 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 tubes 200, it will guide the upper small paper tubes 200 to move inward, thereby reducing the spacing distance between the upper small paper tubes 200.

[0111] 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 achieve the limit guiding of the small paper tubes 200 located on both sides.

[0112] 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, thus facilitating 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.

[0113] 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 firmly 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.

[0114] 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 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 downward pressing effect to ensure that the small paper tube 200 in the center can move downward.

[0115] Preferably, in one embodiment, the gathering paper guide 71 includes a base plate 711 and a cover plate 712 disposed on the base plate 711. The guide channel 72 is formed on the base plate 711, and the cover plate 712 is provided with a glue gun hole 7121 for circumventing the fixed glue gun 73. The cover plate 712 can limit the upper side of the small paper tube 200, preventing the small paper tube 200 from bouncing upward.

[0116] Preferably, in one embodiment, the paper tube gathering mechanism 70 further includes a gathering sliding unit, wherein the gathering paper guide 71 is disposed on a slide of the gathering sliding unit, and the slide is slidable in the width direction of the gathering paper guide 71. The provision of the gathering sliding unit facilitates adjustment of the lateral position of the gathering paper guide 71 to better accommodate deviations 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, or even a manual drive, as long as it can drive the gathering paper guide 71 to move laterally.

[0117] Preferably, in one embodiment, a double-layer paper tape gluing mechanism 80 and a double-layer paper tape heating mechanism 90 are further 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 onto one layer 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.

[0118] Two large paper rolls are placed in the second raw material placement position 1021. It is understood that the large paper tube 300 formed from a single-layer paper tape is relatively thin. In this embodiment, by placing two large paper rolls in the second raw material placement position 1021 and providing the double-layer paper tape gluing mechanism 80 and the double-layer paper tape heating mechanism 90, one or two large paper tapes can be first fed into the double-layer paper tape gluing mechanism 80. After the double-layer paper tape gluing mechanism 80 sprays glue, the two large paper tapes are then heated and solidified by the double-layer paper tape heating mechanism 90. As a result, the large paper tapes subsequently fed into the second gluing mechanism 40 are double-layered. Consequently, the final large paper tube 300 is formed from a double-layered paper tape, resulting in a thicker thickness.

[0119] Alternatively, a large paper tape slitting mechanism is further provided between the second raw material placement position 1021 and the double-layer paper tape gluing mechanism 80. That is, in this embodiment, a roll of a wider paper tape (e.g., a double-width or triple-width paper tape) can be placed in the second raw material placement position 1021. During the production process, the paper tape slitting mechanism slits the roll into a desired number of large paper tapes of desired width, which are then fed into subsequent mechanisms.

[0120] It is understandable that, according to actual needs, the large paper tube 300 can also be made of more layers of paper tape. It is only necessary to place more paper rolls accordingly and make corresponding improvements to the double-layer paper tape gluing mechanism 80 and the double-layer paper tape heating mechanism 90.

[0121] Please refer to Figures 16 to 18 Specifically, in one embodiment, the large paper tape 400 located on the upper side and the large paper tape 400 located on the lower side of the double-layer paper tape are staggered, and one side of the large paper tape 400 on the upper side is reserved as an overlap for the subsequent large paper tube, and the other side of the large paper tape 400 on the lower side is also reserved as an overlap for the subsequent large paper tube, so that every part on the large paper tube 300 finally rolled is a double-layer paper tape structure.

[0122] Preferably, in one embodiment, the double-layer paper tape gluing mechanism 80 is equipped with two glue guns for spraying glue at two corresponding bonding locations 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 adhesive at the two bonding locations 500. The two layers of the large paper tape 400 then enter the double-layer paper tape heating mechanism 90 for heating, connecting the two layers of the large paper tape 400 together to form a double-layer paper tape. The double-layer paper tape then enters the gluing mechanism and the forming mechanism in sequence to form a double-layer paper tube.

[0123] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 includes a heating block 91 and a heating paper tape channel 92 provided in the heating block 91. 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.

[0124] The length direction of the heating block 91 is as follows: Figure 17 In the X2 direction, the width direction of the heating block 91 is as follows Figure 17 In the Y3 direction, the thickness direction of the heating block 91 is Figure 17 Z2 direction shown.

[0125] 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.

[0126] The heating tape channel 92 is located between the high-temperature heating block unit 911 and the low-temperature heating block unit 912, that is, a portion of the heating tape channel 92 is located on the high-temperature heating block unit 911, and the other portion is located on the low-temperature heating block unit 912. The high-temperature heating block unit 911 is provided to correspond to one bonding position 500 of the double-layer paper tape, and the low-temperature heating block unit 912 is provided to correspond to the other bonding position of the double-layer paper tape. In other words, when the double-layer paper tape flows into the heating tape channel 92, one bonding position 500 on the double-layer paper tape is located in the high-temperature heating block unit 911, and is heated by the high-temperature heating block unit 911; while the other bonding position 500 on the double-layer paper tape is located in the low-temperature heating block unit 912, and is positioned at a low temperature by the low-temperature heating block unit 11.

[0127] 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 directly used to completely bond the double-layer paper tape firmly, 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.

[0128] 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, thereby ensuring 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 formation of the double-layer paper tube.

[0129] 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 in detail here. The specific heating temperature used 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 to be able to meet the high-temperature sol to ensure that the double-layer paper tape is firmly bonded, and the other side can be capable of low-temperature positioning to allow the glue to be fixed and positioned.

[0130] 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.

[0131] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 further includes a pressing shaft 93, which is located above the heated paper tape channel 92 and is used to position the double-layer paper tape. The placement of the pressing shaft 93 can press the double-layer paper tube downward to a certain extent, thereby improving the bonding and fixing effect.

[0132] 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 the double-layer paper tape, thereby better avoiding wear on the double-layer paper tape.

[0133] 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.

[0134] It is understood that during the production process, the double-layer paper tape (double-layer paper tube) may shift laterally due to various factors, resulting in a certain amount of offset between the front and rear positions of the double-layer paper tape (double-layer paper tube). Therefore, the position of the heating block 91 often needs to be adjusted to accommodate the front and rear positions of the double-layer paper tape (double-layer paper tube).

[0135] 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, without the need to adjust the pressing shaft 93 additionally, thereby improving the adjustment efficiency.

[0136] 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.

[0137] Preferably, in one embodiment, the double-layer paper tape heating mechanism 90 further includes a heating mechanism sliding unit 95. The housing 94 is disposed on a slide of the heating mechanism sliding unit 95, and the slide is slidable in the width direction of the heating block 91. The provision of the heating mechanism sliding unit 95 facilitates adjustment of the lateral position of the heating block 91 to better accommodate deviations 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, or even a manual drive, as long as it can drive the heating block 91 to move laterally.

[0138] 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 for accommodating 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 applied to the edge of the paper tape (i.e., the overlap of the paper tape). 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 corresponding central area of ​​the paper tape. The glue sprayed by the second glue gun 43 is mainly used for subsequent bonding and fixing of the paper tape and the small paper tube inside.

[0139] 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 gluing 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.

[0140] The paper strip is primarily divided along its width into a central region and edges on either side of the central region. The first glue gun 42 can apply glue only to one edge. The specific spraying location of the second glue gun 43 within the central region 220 can be selected based on actual production requirements (e.g., the specific location or number of paper tubes to be bonded).

[0141] 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 via 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 via the connecting plate 44 and is directly mounted on the large paper tape paper guide 41. Furthermore, because the connecting plate 44 is connected to the side 412 of the large paper tape paper guide 41, it does not obstruct the paper tape and does not affect the normal conveyance of the paper tape.

[0142] It is understood that during the production process, the paper tape may shift laterally due to various factors, resulting in a certain amount of misalignment in the front-to-back position of the paper tape (paper tube). To compensate for this misalignment, the large paper tape guide 41 is typically moved laterally to adjust the position of the paper tape within the large paper tape guide 41. After adjusting the position of the large paper tape guide 41, the positions of the first glue gun 42 and the second glue gun 43 must also be adjusted simultaneously to ensure accurate glue spraying. The connecting plate 44 connects the first glue gun 42 and / or the second glue gun 43 to the large paper tape guide 41. Adjusting the position of the large paper tape guide 41 simultaneously moves the first glue gun 42 and / or the second glue gun 43. This eliminates the need for separate adjustments to the positions of the first glue gun 42 and / or the second glue gun 43, and eliminates the need for separate alignment of the first glue gun 42 and / or the second glue gun 43 with the large paper tape guide 41, thereby reducing the difficulty of adjustment. 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.

[0143] 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 paper board 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 paper board 41 through different connecting plates 44.

[0144] Preferably, in one embodiment, the large paper tape paper guide channel 411 extends along the length direction of the large paper tape paper guide plate 41. The second gluing mechanism 40 further includes a second gluing mechanism sliding unit 45, and the large paper tape paper guide plate 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 plate 41. The arrangement of the second gluing mechanism sliding unit 45 facilitates the adjustment of the position of the large paper tape paper guide plate 41. Specifically, the second gluing mechanism sliding unit 45 can adopt any desired structure, such as an electric slide, a pneumatic slide, etc., or even a manual drive method, as long as it can drive the large paper tape paper guide plate 41 to move horizontally.

[0145] The length direction of the large paper tape guide plate 41 is Figure 20 In the X3 direction, the width direction of the large paper tape guide 41 is Figure 20 In the Y3 direction, the thickness direction of the large paper tape guide paper 41 is Figure 20 Z3 direction shown.

[0146] Preferably, in one embodiment, the second glue gun 43 is connected to the large paper tape paper guide 41 via the connecting plate 44. That is, in this embodiment, at least the second glue gun 43 is mounted on the large paper tape paper guide 41 via the connecting plate 44.

[0147] Preferably, in one embodiment, the second glue gun 43 is rotatably connected to the connecting plate 44, with the rotation axis of the second glue gun 43 being parallel to the width of the large paper tape guide plate 41. By configuring 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 maintenance and cleaning of the second glue gun 43 are also facilitated. For example, when the equipment is shut down, the second glue gun 43 can be rotated, and the gun head 431 of the second glue gun 43 can be moved to the standby position. This avoids wasting glue and also prevents excessive glue from being applied to the paper tape during shutdown, which could affect the stability of subsequent molding. Furthermore, during maintenance, cleaning and maintenance of the gun head 431 can be performed by simply rotating the second glue gun 43, reducing maintenance complexity.

[0148] Preferably, in one embodiment, a positioning structure 46 is provided between the second glue gun 43 and the connecting plate 44. The positioning structure 46 includes a positioning protrusion and a positioning hole 461 that matches the positioning protrusion. The positioning protrusion is provided on one of the second glue gun 43 and the connecting plate 44, while the positioning hole 461 is provided on the other of the two. Specifically, 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. At least two positioning holes 461 are provided, spaced apart from each other along the rotational direction of the second glue gun 43. Thus, by rotating the second glue gun 43, the positioning protrusion engages with different positioning holes 461, enabling quick adjustment 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 stuck in one of the positioning holes 461, the second glue gun 43 is located in the working position, so that the working position can be quickly adjusted and positioned; and when the second glue gun 43 is rotated so that the positioning protrusion is stuck in another of the positioning holes 461, the second glue gun 43 is located in the standby position, so that the standby position can be quickly adjusted and positioned.

[0149] 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 .

[0150] Preferably, in one embodiment, the first glue gun 42 and the second glue gun 43 are respectively connected to the large paper tape paper guide 41 via 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 paper guide 41.

[0151] 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 tank 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 tank 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.

[0152] Preferably, in one embodiment, the second glue gun 43 is located in front of the first glue gun 42. The front is relative to the direction of paper tape transport. That is, when the paper tape flows over the large paper tape guide 41, it first passes the location of the second glue gun 43 and then the location of the first glue gun 42.

[0153] Specifically, in one embodiment, the second molding mechanism 50 may also adopt a cloth belt conveying molding structure.

[0154] Please refer to Figures 22 to 25 Preferably, in one embodiment, the paper tube forming unit 100 further includes a pressing block structure 103, comprising a pressing block 1031 and an air hole 1032 provided on the pressing block 1031. The pressing block 1031 is located on the rear side of the second forming mechanism 50, wherein the rear side is relative to the conveying direction of the large paper tube 300. In other words, after the large paper tube 200 flows out of the discharge port of the second forming mechanism 50, it will flow through the area where the pressing block 1031 is located. The pressing block 1031 is also 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, thereby improving the compression effect on the large paper tube 300.

[0155] The air holes 1032 are positioned corresponding to the bonding joints of the large paper tube 300. That is, when the pressing block 1031 is installed, the air holes 1032 on the pressing block 1031 face the joints of the large paper tube 300. The air holes 1032 are connected to an external air source to blow air toward the bonding joints of the large paper tube 300. The external air source can be any device capable of providing a stable airflow. Because the air holes 1032 face the bonding joints of the large paper tube 300 and are connected to the external air source, the airflow provided by the external air source can flow through the air holes 1032 toward the bonding joints of the large paper tube 300, applying pressure to the bonding joints and further tightening the glue. This prevents the large paper tube 300 from loosening and opening after exiting the forming mechanism, thereby finalizing the large paper tube 300.

[0156] That is, in this embodiment, by providing an additional pressure block 1031 on the rear side of the second forming mechanism 50, a certain amount of airflow can be blown toward the large paper tube 300 through the air holes 1032 in the pressure block 1031, thereby applying a certain amount of pressure to the large paper tube 300, increasing the forming distance and time of the large paper tube 300, and thereby improving the forming stability of the large paper tube 300. Furthermore, since the pressure is applied to the large paper tube 300 by airflow, wear on the large paper tube 300 is minimized. It is understood that to ensure the forming of the large paper tube 300, the air pressure applied to the bonding points of the large paper tube 300 through the air holes 1032 should not be excessive; it only needs to provide a slight pressure to prevent the large paper tube 300 from loosening, thereby avoiding inward compression deformation of the large paper tube 300.

[0157] Preferably, in one embodiment, the pressing block 1031 is in the shape of an elongated strip, and the length direction of the pressing block 1031 is along the conveying direction of the large paper tube 300. This can better shape the large paper tube 300 and also facilitate the arrangement of the pressing block 1031.

[0158] Preferably, in one embodiment, the air holes 1032 include connecting air holes 10321 and blowing holes 10322. 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 via a pipeline. The blowing holes 10322 are provided corresponding to the bonding points of the paper tube 200. Multiple groups of blowing holes 10322 are sequentially provided along the length of the pressing block 1031, and each blowing hole 10322 is connected to the connecting air holes 10321. In other words, in this embodiment, the external air source provides airflow to the connecting air holes 10321, and the airflow then flows into each blowing hole 10322 and then flows toward the bonding points 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.

[0159] Preferably, in one embodiment, each group of the air holes 10322 includes two air holes 10322, and the two air holes 10322 in each group of the air holes 10322 are spaced apart from each other along the width direction of the pressing block 1031, so that each group of the air 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.

[0160] The length direction of the pressing block 1031 is as follows: Figure 22In the X4 direction, the width direction of the pressing block 1031 is as follows Figure 22 In the Y4 direction, the thickness direction of the pressing block 1031 is as follows: Figure 22 Z4 direction shown.

[0161] Preferably, in one embodiment, the pressing block 1031 has an arcuate groove 10311 on the side facing the large paper tube 300. The arcuate groove 10311 extends along the length of the pressing block 1031 and penetrates the pressing block 1031. That is, the arcuate groove 10311 is completely open at both ends, allowing the paper tube 200 to flow smoothly into and out of the arcuate groove 10311. The air blowing hole 10322 is located inside the arcuate groove 10311, so that air is blown out from the arcuate groove 10311. The provision of the arcuate groove 10311 can better adapt to and avoid the large paper tube 300.

[0162] Preferably, in one embodiment, the pressure block structure 103 further includes a connecting plate 1033 and a mounting plate 1034. The pressure block 1031 is disposed on the connecting plate 1033, and the connecting plate 1033 is liftable on the mounting plate 1034. This structure enables the pressure block 1031 to be raised and lowered, thereby facilitating maintenance and installation of the unit. Specifically, the connecting plate 1033 can be connected to any drive mechanism (e.g., a pneumatic cylinder, an oil cylinder, etc.), so that the drive mechanism provides power to drive the connecting plate 1033 to rise and fall, thereby driving the pressure block 1031 to rise and fall.

[0163] Preferably, in one embodiment, the pressing block 1031 is detachably mounted on the connecting plate 1033, thereby facilitating the inspection and replacement of the pressing block 1031. Specifically, in one embodiment, the pressing block 1031 and the connecting plate 1033 are detachably connected by screws.

[0164] Preferably, in one embodiment, a guide structure 1035 is provided between the connecting plate 1033 and the mounting plate 1034. The guide structure 1035 includes a guide rail 10351 and a slider 10352. The guide rail 10351 is vertically disposed on the mounting plate 1034, and the connecting plate 1033 is slidably connected to the guide rail 10351 via the slider 10352. The provision of the guide structure 1035 allows for more stable guidance of the lifting direction of the connecting plate 1033.

[0165] Preferably, in one embodiment, a limiter 1036 is provided on the mounting plate 1034, and the limiter 1036 is used to block the connecting plate 1033 to limit the sliding position of the connecting plate 1033. Specifically, in one embodiment, the limiter 1036 is provided on the top of the mounting plate 1034 to limit the rising height of the connecting plate 1033.

[0166] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection 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 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 behind 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; 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 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 further provided between the second raw material placement position and the double-layer paper tape gluing mechanism; The double-layer paper tape gluing mechanism is provided with two glue guns, which are used to spray glue on two corresponding bonding positions on the paper tape; The double-layer paper tape heating mechanism includes 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 that 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 set corresponding to one bonding position of the paper tape, and the low temperature heating block unit is set corresponding to another bonding position of the paper tape.

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 a 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 further 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 provided between the first gluing mechanism and the first forming mechanism. The pre-pressing mechanism includes a pre-pressing base plate and a pre-pressing block. A pre-pressing channel is provided on the pre-pressing base plate. The pre-pressing channels are arranged in one-to-one correspondence with the small paper tape channels. A pre-pressing block is correspondingly provided above each pre-pressing channel.

4. The paper tube forming unit according to claim 2, characterized in that: The small paper tube forming machine further includes a paper tube gathering mechanism, the paper tube gathering mechanism being located at the rear side of the first forming mechanism, the paper tube gathering mechanism including a gathering guide plate, the gathering guide plate being provided with a guide channel for the small paper tubes to flow through; Along the conveying direction of the small paper tube, the guide channel includes a first channel and a second channel that are connected in sequence; Along the conveying direction of the small paper tube, the first channel has a gradually decreasing width structure; The width of the second channel is no 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 tape conveying mechanism, and the cloth tape conveying mechanism is used to drive the small paper tape to move.

6. The paper tube forming unit according to claim 1, characterized in that: The second gluing mechanism includes a large paper tape guide plate, a first glue gun and a second glue gun; The large paper tape guide plate 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.

7. The paper tube forming unit according to claim 1, characterized in that: The large paper tube forming machine further includes a pressing block structure, wherein the pressing block structure includes a pressing block and air holes provided on the pressing block; The pressing block is located at the rear side of the second forming mechanism and extends 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 air toward the bonding positions of the large paper tubes.

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