A high-strength paper tube and automatic forming method thereof

Abstract

The invention relates to a high-strength paper tube and an automatic forming method thereof, comprising an outer tube, an inner tube, a reinforcing layer arranged between the outer tube and the inner tube and used for supporting an inner cavity formed between the outer tube and the inner tube, a protrusion arranged on the reinforcing layer and connected to an extension groove on the outer tube and used for supporting an outer cavity formed between a winding layer and the outer tube, a connecting hole formed through the protrusion and connecting the outer cavity with the inner cavity, two anti-detachment covers respectively arranged at both ends of the inner tube, and an air hole formed through the anti-detachment cover and used for connecting the outer cavity with the inner cavity. The invention solves the problems of low production continuity, many steps, low production efficiency, poor air permeability and unstable connection during use in the existing paper tube production.

Description

Technical Field

[0001] The present invention relates to the technical field of paper tubes, and in particular to a high-strength paper tube and an automatic forming method thereof. Background Art

[0002] The traditional paper tube industry originated in the early 20th century and refers to the industry that produces and sells paper tubes. Paper tubes are widely used in packaging, printing, textiles, chemicals and other fields. According to different uses and materials, paper tubes can be divided into industrial paper tubes and food-grade paper tubes. The traditional paper tube industry is an important supporting industry for downstream industries such as packaging and printing, and plays an important role in ensuring the development of related industries. In recent years, with the development of industry and technology, the application of paper tubes has become more and more extensive, and the scale of the industry has gradually expanded. In addition, affected by environmental protection policies and market demand, the concentration of the industry has gradually increased. In addition, with the improvement of environmental awareness and the emergence of new materials, the traditional paper tube industry is facing the pressure of transformation and upgrading, and needs to strengthen technological innovation and environmental protection management to improve product quality and added value.

[0003] The patent document with patent number CN220300026U discloses a paper tube for rolling paper, including a tube body, both ends of which are provided with anti-detachment covers, the tube body including an inner tube, the inner side of the inner tube is fixedly connected with a plurality of support frames, the outer periphery of the inner tube is provided with a reinforcement layer, the outer periphery of the reinforcement layer is provided with an outer tube, and the support frame and the reinforcement layer can be used to support and protect the tube body, and the tube body can be prevented from being squeezed and deformed such as dents or fractures, thereby improving its overall strength, and at the same time, the anti-detachment covers can be used to seal both ends of the tube body, and when the paper is wound, the elastic force generated by the deformation of the outward-turned elastic sheet can be used so that the elastic sheet can hold the paper, and under the cooperation of the protrusions provided on the surface of the outer tube, the friction force is greatly increased, thereby avoiding the phenomenon of paper slipping and improving the efficiency of paper winding.

[0004] However, in the actual production process, the inventors found that during the production of existing paper tubes, usually the various components are produced and then assembled and bonded, the production continuity is low, the various components need to be repositioned before assembly, there are many production steps, and the production efficiency is low; in addition, in the actual use process, the inventors found that the surfaces of existing paper tubes are mostly sealed, resulting in poor air permeability of the paper tubes, which can easily cause the environment inside the paper tubes to be too dry or humid, and the connection between the outer tube and the reinforcement layer is unstable, and it is easy to misalign and move after long-term use, which not only reduces the reinforcement effect and affects the overall strength, but also affects the efficiency and effect of the subsequent outer winding and winding layer. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the prior art. After the inner tube forming mechanism is set to cooperate with the second conveying mechanism and the outer tube forming mechanism to synchronously roll and form the inner tube and the outer tube, the first conveying mechanism and the assembly mechanism are cooperated to realize the automatic assembly of the paper tube. When the inner tube is formed, the support component cooperates with the first conveying component to directly form the outer tube on the outside of the reinforcement layer, and the cutting component is assisted to directly form the extension groove of the connection protrusion on the outer tube. The collection component cooperates with the connecting hole to facilitate the blowing out and collection of waste materials, improve the continuity of production, reduce the production steps, and improve the stability of the connection between the outer tube and the reinforcement layer. In addition, the connecting hole cooperates with the air hole to improve the flow effect of the airflow inside the paper tube, and the air permeability is good. Thereby solving the problems of low production continuity, many steps, low production efficiency, poor air permeability and unstable connection during the production of existing paper tubes.

[0006] In view of the above technical problems, the technical solution is as follows: a high-strength paper tube, comprising:

[0007] An outer tube for rolling up an outer winding layer, an inner tube arranged in the outer tube, a reinforcing layer arranged between the outer tube and the inner tube and used to support an inner cavity formed between the outer tube and the inner tube, a protrusion arranged on the reinforcing layer and connected to the extension groove on the outer tube to support the outer cavity formed between the winding layer and the outer tube, a connecting hole formed through the protrusion and connecting the outer cavity with the inner cavity, two anti-detachment covers respectively arranged at both ends of the inner tube, and an air hole formed through the anti-detachment cover and used to connect the outer cavity with the inner cavity.

[0008] Preferably, the outer tube and the inner tube are both rolled from paper.

[0009] Preferably, the paper rolled into the outer tube and the inner tube is kraft paper, and the number of layers of the kraft paper rolled into the outer tube and the inner tube is 16-24.

[0010] Preferably, the thickness of the outer tube and the inner tube are both 4-8 mm.

[0011] Preferably, the reinforcement layer and the protrusion are made of high-strength plastic or aluminum alloy material by integral molding.

[0012] Preferably, the thickness of the reinforcement layer is 6-10 mm, and the length of the protrusion extending out of the extension groove is 4-8 mm.

[0013] Preferably, the inner tube is inserted into the interior of the reinforcement layer, and the two anti-detachment covers are respectively inserted into the interior of both ends of the inner tube.

[0014] The present application also provides a paper tube automatic forming method, comprising the following steps:

[0015] Step 1: Inner tube forming process, after the paper is rolled into the inner tube by the inner tube forming mechanism, the inner tube is positioned and transported to the assembly mechanism;

[0016] Step 2: Positioning and supporting process, the reinforcing layer is transported to the outer tube forming mechanism for positioning and support by the second transport mechanism, and at the same time, the assembling mechanism cooperates with the first transport mechanism to connect an anti-drop cover to one end of the inner tube;

[0017] Step 3: outer tube forming process, taking another paper and passing it through the first conveying component of the outer tube forming mechanism and the supporting component to cooperate with each other to roll it outside the reinforcing layer to form the outer tube, and at the same time, during the rolling process of the outer tube, the cutting component and the collecting component of the outer tube forming mechanism cooperate with the protrusion to cut the extension groove on the outer tube;

[0018] Step 4: Sealing assembly process; after the reinforcing layer with the outer tube is positioned and assembled on the inner tube through the assembly mechanism, the assembly mechanism cooperates with the first conveying mechanism to connect another anti-detachment cover at the other end of the inner tube.

[0019] Preferably, in step three, the cutting assembly cooperates with the protrusion to cut out the extension groove with a length of 10-25 mm and a width of 4-8 mm.

[0020] Preferably, in step three, the cutting assembly cooperates with the protrusion to cut out 8-12 rows of the extension grooves at equal intervals along the circumference of the inner tube, and the number of the extension grooves in each row is 4-8.

[0021] Beneficial effects of the present invention:

[0022] (1) In the present invention, an extension groove is formed on the outer tube so that the protrusion on the reinforcing layer extends to the outside of the outer tube, thereby improving the connection stability and forming a protrusion on the outer ring surface of the outer tube for anti-slip, which is convenient for the winding of the winding layer. At the same time, a connecting hole connecting the inner cavity and the outer cavity is formed on the protrusion, which not only enables the waste cut by the cutting component to be blown out and collected during production, but also facilitates the discharge and collection of the waste, thereby preventing the waste from affecting the rolling and subsequent assembly of the outer tube. In addition, when in use, the air port on the anti-detachment cover is used to allow the air flow to flow between the inner cavity and the outer cavity, thereby improving the flow effect of the air flow and achieving good air permeability.

[0023] (2) In the present invention, after the inner tube forming mechanism cooperates with the second conveying mechanism and the outer tube forming mechanism to synchronously roll and form the inner tube and the outer tube, the first conveying mechanism and the assembling mechanism are cooperated to realize the automatic assembly of the paper tube, thereby improving the continuity of production, reducing the production steps, and improving the production efficiency. When the inner tube is formed, the supporting component cooperates with the first conveying component to directly form the outer tube on the outside of the reinforcing layer, thereby improving the stability of the connection between the outer tube and the reinforcing layer, and the cutting component and the collecting component are used to directly form an extension groove on the outer tube that is connected to the protrusion on the reinforcing layer, thereby further improving the continuity of production, reducing the production steps, and improving the stability of the connection between the outer tube and the reinforcing layer.

[0024] (3) In the present invention, by providing a plurality of first positioning components and a plurality of bottom plates and positioning clamps of the second positioning components of the assembly mechanism, a plurality of supporting components, cutting components and collecting components of the outer tube forming mechanism are provided correspondingly, thereby improving the production efficiency of the outer tubes to match the production efficiency of the plurality of inner tubes cut out at one time by the inner tube forming mechanism through the cutting component, thereby ensuring the continuity of production;

[0025] In summary, the production method has high production continuity, few steps, high production efficiency, and the produced paper rolls have good air permeability and stable connections, and is particularly suitable for the field of paper tube technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 A three-dimensional diagram of a paper tube fully automatic rolling and forming device provided by the present invention.

[0028] Figure 2 This is a schematic structural diagram of the outer tube forming mechanism provided by the present invention.

[0029] Figure 3 A three-dimensional cross-sectional view of the support assembly and the cutting assembly provided by the present invention.

[0030] Figure 4 A cross-sectional view of the support assembly and the cutting assembly provided by the present invention.

[0031] Figure 5 This is a schematic structural diagram of the assembly mechanism provided by the present invention.

[0032] Figure 6 A three-dimensional cross-sectional view of the assembly mechanism provided by the present invention.

[0033] Figure 7 A top view of the assembly mechanism provided by the present invention.

[0034] Figure 8 The present invention provides Figure 7 Cross-sectional view along the middle line A.

[0035] Fig. 9 The present invention provides Figure 7 Cross-sectional view along the middle edge at B.

[0036] Fig.10 The present invention provides Fig. 9 A partial enlarged view of point C in the middle.

[0037] Fig.11 This is a schematic structural diagram of the first pushing assembly provided by the present invention.

[0038] Fig.12 This is a schematic structural diagram of the first conveying mechanism provided by the present invention.

[0039] Fig.13 A three-dimensional diagram of a paper tube provided by the present invention.

[0040] Fig.14 The exploded schematic diagram of the paper tube provided by the present invention.

[0041] Fig.15 This is a cross-sectional view of the paper tube provided by the present invention when the winding layer is rolled up. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0043] Embodiment 1

[0044] like Figure 13-15 As shown, a high-strength paper tube comprises:

[0045] An outer tube 62 for winding up the external winding layer 65, an inner tube 61 arranged in the outer tube 62, a reinforcing layer 63 arranged between the outer tube 62 and the inner tube 61 and used to support the inner cavity 611 formed between the outer tube 62 and the inner tube 61, a protrusion 631 arranged on the reinforcing layer 63 and connected to the extension groove 622 on the outer tube 62 to support the outer cavity 621 formed between the winding layer 65 and the outer tube 62, a connecting hole 632 formed through the protrusion 631 and connecting the outer cavity 621 with the inner cavity 611, two anti-detachment covers 64 respectively arranged at both ends of the inner tube 61, and an air hole 641 formed through the anti-detachment cover 64 and used to connect the outer cavity 621 with the inner cavity 611.

[0046] In this embodiment, an extension groove 622 is formed on the outer tube 62 so that the protrusion 631 on the reinforcement layer 63 extends to the outside of the outer tube 62, thereby improving the connection stability and forming a protrusion 631 on the outer ring surface of the outer tube 62 for anti-slip, which is convenient for the rolling of the rolling layer 65. At the same time, a connecting hole 632 connecting the inner cavity 611 and the outer cavity 621 is formed on the protrusion 631, so that during production, the waste cut by the cutting component 22 can be blown out and collected, which is convenient for the discharge and collection of the waste and prevents the waste from affecting the rolling and subsequent assembly of the outer tube 62. In addition, during use, the air port on the anti-detachment cover 64 can be used to allow the air flow to flow between the inner cavity 611 and the outer cavity 621, thereby improving the flow effect of the air flow and having good air permeability.

[0047] Further, if Figure 13-Figure 15 As shown, the outer tube 62 and the inner tube 61 are both rolled from paper; the paper rolled into the outer tube 62 and the inner tube 61 is preferably kraft paper, and the number of layers of kraft paper rolled into the outer tube 62 and the inner tube 61 is 16-24 layers; the thickness of the outer tube 62 and the inner tube 61 is 4-8 mm.

[0048] In this embodiment, the outer tube 62 and the inner tube 61 are made of kraft paper with a specific thickness, thereby ensuring the structural stability and strength of the two.

[0049] Further, if Figure 13-Figure 15 As shown, the reinforcing layer 63 and the protrusion 631 are both made of high-strength plastic or aluminum alloy material in one piece; the thickness of the reinforcing layer 63 is 6-10 mm, and the length of the protrusion 631 extending out of the extension groove 622 is 4-8 mm.

[0050] In this embodiment, the reinforcing layer 63 and the protrusion 631 are integrally formed from the same high-strength and lightweight material, thereby improving the structural strength and reducing the difficulty of production. At the same time, the thickness of the reinforcing layer 63 and the length of the protrusion 631 are limited, and the sizes of the inner cavity 611 and the outer cavity 621 are limited, thereby ensuring air circulation and reducing the overall volume.

[0051] Further, if Figure 13-Figure 15 As shown, the inner tube 61 is inserted into the interior of the reinforcement layer 63 , and the two anti-drop covers 64 are respectively inserted into the interior of both ends of the inner tube 61 .

[0052] In this embodiment, this connection method is convenient for production and assembly. At the same time, the inner tube 61 forces the reinforcing layer 63 to expand outward to ensure the fit between it and the outer tube 62, ensuring the support effect and connection stability, and the anti-detachment cover 64 forces the two ends of the inner tube 61 to expand outward to further ensure the connection stability between it and the reinforcing layer 63.

[0053] Embodiment 2

[0054] like Figure 1-Figure 3 as well as Figure 13-15 As shown, a paper tube automatic forming method is used to produce a high-strength paper tube of Example 1, comprising the following steps:

[0055] Step 1: Inner tube forming process, after the paper is rolled into an inner tube 61 by the inner tube forming mechanism 2, the inner tube 61 is positioned and transported to the assembly mechanism 1;

[0056] Step 2: Positioning and supporting process, the reinforcing layer 63 is transported to the outer tube forming mechanism 5 by the second conveying mechanism 4 for positioning and supporting, and at the same time, the assembling mechanism 1 cooperates with the first conveying mechanism 3 to connect an anti-drop cover 64 to one end of the inner tube 61;

[0057] Step 3: outer tube forming process, another paper is taken and rolled outside the reinforcing layer 63 to form an outer tube 62 through the cooperation of the first conveying assembly 53 and the supporting assembly 52 of the outer tube forming mechanism 5. Meanwhile, during the rolling process of the outer tube 62, the cutting assembly 54 and the collecting assembly 55 of the outer tube forming mechanism 5 cooperate with the protrusion 631 to cut the extension groove 622 on the outer tube 62;

[0058] Step 4: Sealing assembly process; after the reinforcing layer 63 with the outer tube 62 is positioned and assembled on the inner tube 61 through the assembly mechanism 1, the assembly mechanism 1 cooperates with the first conveying mechanism 3 to connect another anti-detachment cover 64 at the other end of the inner tube 61.

[0059] Further, if Figure 1-Figure 3 as well as Figure 13-15 As shown, in step three, the cutting component 54 cooperates with the protrusion 631 to cut out the extension groove 622 with a length of 10-25 mm and a width of 4-8 mm. The cutting component 54 cooperates with the protrusion 631 to cut out 8-12 rows of extension grooves 622 at equal intervals along the circumference of the inner tube 61, and the number of extension grooves 622 in each row is 4-8.

[0060] In this embodiment, by limiting the length, width, number and arrangement of the extension grooves 622, the structural setting of the cutting component 54 is facilitated and a good cutting and forming function is achieved. At the same time, it also avoids too many extension grooves 622 affecting the strength of the outer tube 62 and too few extension grooves 622 affecting the stability of the protrusion 631 when supporting the winding layer 65.

[0061] Embodiment 3

[0062] like Figure 1-Figure 3 as well as Figure 13-15 As shown, a paper tube fully automatic rolling forming equipment is used to produce a high-strength paper tube of Example 1, comprising:

[0063] An assembly mechanism 1 for assembling a reinforcing layer 63 with an outer tube 62 between an inner tube 61 and an anti-detachment cover 64 to form a paper tube 6, an inner tube forming mechanism 2 arranged outside the assembly mechanism 1, a first conveying mechanism 3, a second conveying mechanism 4 and an outer tube forming mechanism 5, wherein the inner tube forming mechanism 2 is used to position and form the inner tube 61 into the assembly mechanism 1, the first conveying mechanism 3 is used to position and convey the anti-detachment cover 64 into the assembly mechanism 1, the second conveying mechanism 4 is used to position and convey the reinforcing layer 63 onto the outer tube forming mechanism 5, and the outer tube forming mechanism 5 is used to position and form the outer tube 62 outside the reinforcing layer 63;

[0064] The outer tube forming mechanism 5 includes a frame 51, a supporting assembly 52 rotatably disposed on the frame 51 and used for positioning and supporting the reinforcing layer 63, a first conveying assembly disposed on the frame 51 and used for conveying paper to the outside of the reinforcing layer 63, a cutting assembly 53 disposed on the frame 51 and cooperating with the protrusion 631 on the reinforcing layer 63 to cut out an extension groove 622 when the paper is rolled into the outer tube 62 so that the protrusion 631 extends to the outside of the outer tube 62, and a collecting assembly 54 disposed on the frame 51 and used for collecting waste cut out by the cutting assembly 53.

[0065] In this embodiment, after the inner tube forming mechanism 2 is arranged to cooperate with the second conveying mechanism 4 and the outer tube forming mechanism 5 to synchronously roll and form the inner tube 61 and the outer tube 62, the first conveying mechanism 3 and the assembling mechanism 1 are cooperated to realize the automatic assembly of the paper tube 6, thereby improving the continuity of production, reducing the production steps, and improving the production efficiency. When the inner tube 61 is formed, the supporting component 52 cooperates with the first conveying component to directly form the outer tube 62 on the outside of the reinforcing layer 63, thereby improving the stability of the connection between the outer tube 62 and the reinforcing layer 63, and assisted by the cutting component 53 and the collecting component 54, an extension groove 622 connected to the protrusion 631 on the reinforcing layer 63 is directly formed on the outer tube 62, thereby further improving the continuity of production, reducing the production steps, and improving the stability of the connection between the outer tube 62 and the reinforcing layer 63.

[0066] In detail, first, after the paper is rolled into the inner tube 61 by the inner tube forming mechanism 2, the inner tube 61 is positioned and transported to the assembly mechanism 1; then the reinforcing layer 63 is transported to the support component 52 for positioning and support by the second conveying mechanism 4, and at the same time, the assembly mechanism 1 cooperates with the first conveying mechanism 3 to connect an anti-detachment cover 64 at one end of the inner tube 61, and the anti-detachment cover 64 plays a positioning role when assembling the outer tube 62 later; then another paper is taken and rolled out of the outer tube 62 by the first conveying component in cooperation with the support component 52 on the outside of the reinforcing layer 63, and at the same time, during the rolling process of the outer tube 62, the cutting component 53 cooperates with the protrusion 631 and the collecting component 54 to cut out the extension groove 622 on the outer tube 62; finally, after the reinforcing layer 63 with the outer tube 62 is positioned and assembled on the inner tube 61 by the assembly mechanism 1, the assembly mechanism 1 cooperates with the first conveying mechanism 3 to connect another anti-detachment cover 64 at the other end of the inner tube 61.

[0067] It should be noted that the present application does not limit the specific structure of the inner tube forming mechanism 2. The following only provides one structure for reference, for example:

[0068] It includes a forming assembly 21 for forming a long inner tube 61, a cutting assembly 22 arranged on the forming assembly 21 and used to cut the long inner tube 61 into a plurality of inner tubes 61, and a third conveying assembly 23 arranged on the cutting assembly 22 and used to convey the inner tube 61 to the assembly mechanism 1, and the forming assembly 21, the cutting assembly 22 and the third conveying assembly 23 are all traditional paper tube 6 production equipment, which are prior art and will not be described in detail here;

[0069] The first conveying component used to convey paper in the production of paper tube 6 is a conveying roller group structure. The present application and installation method are both prior arts, which are not drawn in the drawings and will not be described in detail here.

[0070] In addition, the anti-detachment cover 64 is provided with a filter net 642 for filtering the gas entering the air hole 641 .

[0071] Further, if Figure 2-Figure 3 As shown, the support assembly 52 includes a support roller 521 rotatably disposed on the frame 51, a plurality of support bars 522 spaced apart on the outer annular surface of the support roller 521 and used for positioning the support inner cavity 611, a pushing plate 523 movably disposed on the frame 51 and used for pushing the reinforcing layer 63 away from one end of the assembly mechanism 1, and a plurality of positioning plates 524 movably disposed on the frame 51 along the radial direction of the support roller 521 and cooperating with the pushing of the pushing plate 523 to position the other end of the reinforcing layer 63.

[0072] In this embodiment, by providing a support roller 521 and cooperating with the support bar 522 to support the inner cavity 611, and the pushing plate 523 and the positioning plate 524 respectively position the two ends of the reinforcing layer 63, positioning support for the reinforcing layer 63 is achieved, and the support bar 522 supports the inner cavity 611 and the reinforcing layer 63 at the same time, thereby ensuring that the reinforcing layer 63 will not be deformed when the outer tube 62 is rolled into shape.

[0073] In detail, when in use, the positioning plate 524 moves in the direction away from the support roller 521, and the second conveying mechanism 4 is able to position and convey the reinforcement layer 63 to the support roller 521, and connect the support bar 522 to the inner cavity 611, and then the positioning plate 524 moves in the direction close to the support roller 521, and the pushing plate 523 pushes one end of the reinforcement layer 63 to move until the other end abuts against the positioning plate 524, thereby achieving positioning support for the reinforcement layer 63, and finally, when the inner tube 61 is rolled and formed, the positioning plate 524 moves in the direction away from the support roller 521, and the pushing plate 523 is able to push the reinforcement layer 63 with the inner tube 61 into the assembly mechanism 1.

[0074] It should be noted that the plurality of support bars 522 position the plurality of inner cavities 611 , and there is an unsupported inner cavity 611 between two adjacent support bars 522 , so that ventilation can subsequently be performed into the communicating hole 632 through these inner cavities 611 .

[0075] Further, if Figures 2 to 4 As shown, the cutting assembly 53 includes a mounting frame 531 that is movable on the frame 51 in a direction approaching or moving away from the supporting roller 521, a squeezing roller 532 that is rotatably disposed on the mounting frame 531 and moves with the mounting frame 531 to cooperate with the supporting roller 521 to squeeze the paper, and a plurality of punching openings 533 that are formed on the squeezing roller 532 and cooperate with each protrusion 631 to punch out an extension groove 622 on the paper.

[0076] In this embodiment, the mounting frame 531 is provided to control the specific position between the squeezing roller 532 and the protrusion so that a suitable overlap is formed between the auxiliary punching opening 533 and the protrusion 631. Then, the supporting roller 521 and the squeezing roller 532 are rotated so that the punching opening 533 and the protrusion 631 cooperate with each other to punch out an extension groove 622 on the paper.

[0077] In detail, when in use, after the squeezing roller 532 moves with the mounting frame 531 in the direction away from the supporting roller 521, the first conveying assembly conveys the paper between the two, and then the mounting frame 531 moves in the direction close to the supporting roller 521 until a suitable overlap is formed between the squeezing roller 532 and the protrusion 631, and then the supporting roller 521 and the squeezing roller 532 rotate synchronously, and the protrusion 631 extends into the punching opening 533 to punch out an extension groove 622 on the paper, and finally, after the inner tube 61 is rolled and formed, the mounting frame 531 continues to move in the direction away from the supporting roller 521, so as to facilitate the pushing plate 523 to push the reinforcing layer 63 with the inner tube 61 out of the supporting roller 521.

[0078] Further, if Figure 3-Figure 4 As shown, the push plate 523 seals one end of the inner cavity 611, and a plurality of positioning plates 524 are spliced ​​together to seal the other end of the inner cavity 611; the collecting assembly 54 includes a plurality of blowing holes 541 penetratingly arranged on the supporting roller 521, an air inlet pipe 542 with one end arranged on the frame 51 and the other end extending to the inside of the supporting roller 521, an air outlet cavity 5 with one end connected to the air inlet pipe 542 and the other end facing the squeezing roller 532 and connected to an inner cavity 611 through a row of blowing holes 541, a collecting pipe 543 with one end arranged on the mounting frame 531 and the other end extending to the squeezing roller 532, and a collecting cavity 545 with one end connected to the collecting pipe 543 and the other end facing the supporting roller 521 and connected to the connecting hole 632 through a row of punching holes 533.

[0079] In this embodiment, an air inlet pipe 542 is provided to cooperate with the rotation of the air outlet cavity 5 and the support roller 521 to blow air into the specific inner cavity 611 through the specific blowing hole 541, and at the same time, the pushing plate 523 and the positioning plate 524 are used to seal the two ends of the inner cavity 611 to avoid air leakage, and the blowing air pressure is strong and the blowing effect is good, so that the waste material in the punching opening 533 can be transported into and out of the extrusion roller 532 through the connecting hole 632, and at the same time, the collecting chamber 545 cooperates with the rotation of the extrusion roller 532 to collect the waste material in the specific punching opening 533, and the collecting effect is good, and the strength of the blowing air pressure is ensured, so that the waste material in the collecting chamber 545 can be flushed into the collecting pipe 543 for collection.

[0080] It should be noted that the air inlet pipe 542 and the collecting pipe 543 can also be rotatably connected to the support roller 521 and the squeezing roller 532. After the air inlet pipe 542 and the collecting pipe 543 are separated from the air outlet chamber 5 and the collecting chamber 545 respectively, it is convenient to replace the support roller 521 and the squeezing roller 532 as a whole.

[0081] Further, if Figure 5-Figure 8 As shown, the assembly mechanism 1 includes an outer shell 11, a bracket 12 rotatably disposed in the outer shell 11, a plurality of first positioning components 13 rotatably disposed on a rotating frame at equal intervals along the circumference of the outer shell 11 and used for positioning and supporting the inner tube 61, a first assembly channel 14 formed on the outer shell 11 and used for assembling an anti-detachment cover 64 on the inner tube 61, a second assembly channel 15 formed on the outer shell 11 and used for assembling a reinforcement layer 63 on the inner tube 61, a feed port 16 formed on the upper end of the outer shell 11, a discharge port 18 formed on the lower end of the outer shell 11, and an output component 17 arranged below the discharge port 18.

[0082] In this embodiment, the inner tube 61 positioned by the first positioning component 13 is rotated to each work station by setting a bracket 12, so that the positioning component cooperates with the inner tube forming mechanism 2, the first conveying mechanism 3, the outer tube forming mechanism 5 and the output component 17 through the feed port 16, the first assembly channel 14, the second assembly channel 15 and the discharge port 18 respectively, thereby realizing the loading of the inner tube 61, the assembly between the inner tube 61 and the reinforcement layer 63, the assembly between the inner tube 61 and the anti-detachment cover 64, and the output of the paper tube 6.

[0083] Further, if Figure 5-Figure 8 As shown, the second conveying mechanism 4 includes a plurality of second positioning components 41 arranged on a rotating frame between two adjacent first positioning components 13 and used to position the support reinforcement layer 63, a second conveying component 42 arranged outside the outer shell 11 and conveying the reinforcement layer 63 into the second positioning component 41 through the feed port 16, and a first pushing component 43 arranged in the outer shell 11 and used to push the reinforcement layer 63 to be assembled onto the support component 52 through the second assembly channel 15.

[0084] In this embodiment, the second positioning component 41 is arranged to cooperate with the rotation of the bracket 12 to the feed port 16 to position the reinforcing layer 63 transported by the second conveying component 42, and then cooperate with the first pushing component 43 to push the reinforcing layer 63 to be positioned and assembled on the supporting component 52.

[0085] It should be noted that there are two feed ports 16, and the two feed ports 16 cooperate with the second conveying component 42 and the third conveying component 23 to respectively convey the inner tube 61 and the reinforcement layer 63 into the first positioning component 13 and the second positioning component 41, and the conveying principles of the second conveying component 42 and the third conveying component 23 are the same, which will not be elaborated here.

[0086] Further, if Figure 8-Figure 10 As shown, the first positioning assembly 13 and the second positioning assembly 41 both include a partition 131 which is arranged on the bracket 12 and whose two ends cooperate with the shell 11 to form a accommodating cavity 111, a bottom plate 132 which is rotatably arranged on the partition 131, and two positioning clamps 133 which are movably arranged on the partition 131 and cooperate with the partition 131 to form a positioning clamping area in the accommodating cavity 111.

[0087] In this embodiment, after the initial positioning is performed by setting the partition plate 131 , the inner tube 61 and the reinforcing layer 63 are clamped and positioned in cooperation with the bottom plate 132 and the positioning clamp plate 133 .

[0088] In detail, when positioning the inner tube 61, the bottom plate 132 rotates into the accommodating cavity 111, and the inner tube 61 is supported and positioned in the accommodating cavity 111 by the feed port 16 and the bottom plate 132, and then the positioning clamping plate 133 pushes and clamps the inner tube 61 to complete the clamping positioning;

[0089] When positioning the reinforcing layer 63, the bottom plate 132 rotates into the accommodating cavity 111, and the reinforcing layer 63 is supported and positioned in the accommodating cavity 111 by the feed port 16 and the bottom plate 132, and the two adjacent protrusions 631 cooperate with the bottom plate 132 to support and limit the rotation of the reinforcing layer 63, thereby positioning the inner cavity 611, and then the positioning clamping plate 133 pushes and clamps the reinforcing layer 63 to complete the clamping positioning;

[0090] When assembling the inner tube 61 and the reinforcing layer 63, after one end of the reinforcing layer 63 is assembled on one end of the inner tube 61 through the second assembly channel 15, the bottom plate 132 and the positioning clamp 133 are opened, and then after the reinforcing layer 63 and the inner tube 61 are mostly assembled in cooperation with the limiting assembly of the outer shell 11, the bottom plate 132 rotates and supports the outer tube 62 outside the reinforcing layer 63, and finally the reinforcing layer 63 is completely separated from the supporting assembly 52 until it is completely assembled on the inner tube 61, and the positioning clamp 133 is closed to clamp the assembled outer tube 62.

[0091] It should be noted that there are multiple base plates 132 and positioning clamps 133, and the corresponding number of support components 52, cutting components 53 and collecting components 54 is multiple, so as to improve the production efficiency of the outer tube 62, to adapt to the production efficiency of the multiple inner tubes 61 cut out by the inner tube forming mechanism 2 through the cutting component 22 at one time, and to ensure the continuity of production.

[0092] Further, if Figure 5-Figure 8 as well as Fig.11 As shown, the first pushing component 43 includes a pushing frame 431 movably set on the outer shell 11 and used to push the reinforcing layer 63, a positioning column 432 movably set on the positioning frame and used to connect the positioning inner cavity 611, and an elastic member 433 set on the pushing frame 431 and used to force the positioning column 432 to move toward the reinforcing layer 63.

[0093] In this embodiment, before the pushing frame 431 pushes the reinforcing layer 63, the positioning column 432 is connected to the position of the positioning inner cavity 611, so that the pushing frame 431 is always in a positioning state when pushing the reinforcing layer 63 to be assembled on the support component 52. At the same time, with the assistance of the elastic member 433, interference with the assembly between the reinforcing layer 63 and the support component 52 is avoided, and the automatic resetting of the positioning column 432 is also achieved.

[0094] In detail, when in use, the pushing frame 431 moves toward the support component 52 until the positioning column 432 is connected to the positioning inner cavity 611 through the second assembly channel 15, and then the second positioning component 41 is opened, and the pushing frame 431 is able to push the reinforcing layer 63 toward the support component 52. Then, after the support component 52 positions one end of the support layer, the support component 52 pushes the positioning column 432 to separate from the reinforcing layer 63, and the elastic member 433 is deformed, and the pushing frame 431 is able to push the reinforcing layer 63 to be completely assembled on the support component 52. Finally, the pushing frame 431 moves away from the support component 52 to reset, and the elastic member 433 restores its deformation to force the positioning column 432 to automatically reset.

[0095] It should be noted that the elastic member 433 can be a coil spring, a leaf spring, etc., and both the elastic member 433 and the installation method thereof are existing technologies and will not be described in detail here.

[0096] Further, if Figure 5-Figure 12As shown, the first conveying mechanism 3 includes a support plate 31 movably arranged on the outer shell 11, two clamping arms 32 movably arranged on the support plate 31 and cooperating with each other for clamping and positioning the anti-detachment cover 64, a pushing port 33 formed on the support plate 31, a second pushing component 34 arranged on the outer shell 11 and pushing the anti-detachment cover 64 to be assembled on the inner tube 61 through the pushing port 33, an input component 35 arranged on the outer side of the outer shell 11 and used to convey the anti-detachment cover 64 toward the support plate 31, and a grabbing component 36 arranged on the input component 35 and used to position and grab the anti-detachment cover 64 to the support plate 31.

[0097] In this embodiment, after the anti-detachment cover 64 grabbed by the grabbing assembly 36 from the input assembly 35 is positioned by setting a support plate and cooperating with the clamping arm 32, the second pushing assembly 34 can position and push the anti-detachment cover 64 into the first assembly channel 14 through the pushing port 33 to realize assembly with the inner tube 61.

[0098] It should be noted that the present application does not limit the specific structures of the second pushing component 34 and the grabbing component 36. The following is only one structure for reference, for example:

[0099] The second pushing assembly 34 includes a support column 341 disposed on the pushing frame 431 and used to support the inner annular surface of the anti-detachment cover 64, and a pushing block 342 disposed on the support column 341 and used to push the anti-detachment cover 64 to be plugged into the inner annular surface of the inner tube 61;

[0100] The grabbing assembly 36 includes a guide plate 361 disposed on the input assembly 35 and used for guiding and positioning the anti-detachment cover 64, and a manipulator 362 disposed on the input assembly 35 and used for positioning the guide plate 361 and grabbing the anti-detachment cover 64 between the clamping arms 32, and the manipulator 362 itself and the installation method are both existing technologies, which will not be described in detail here;

[0101] In addition, both the input component 35 and the output component 17 are conveyor belts, and the two are an integrated structure, which are used for both the input of the anti-drop cover 64 and the output of the paper tube 6.

[0102] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0103] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0104] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A paper tube automatic forming method, characterized in that: The invention comprises a paper tube fully automatic rolling forming device, which comprises an assembling mechanism for assembling a reinforcing layer with an outer tube between an inner tube and an anti-drop cover to form a paper tube, an inner tube forming mechanism arranged outside the assembling mechanism, a first conveying mechanism, a second conveying mechanism and an outer tube forming mechanism; The assembly mechanism includes a bracket rotatably arranged in the shell, a plurality of first positioning components rotatably arranged on the bracket at equal intervals along the circumference of the shell and used for positioning and supporting the inner tube, a first assembly channel formed on the shell and used for assembling the anti-drop cover on the inner tube, a second assembly channel formed on the shell and used for assembling the reinforcement layer on the inner tube, a feed port formed on the upper end of the shell, a discharge port formed on the lower end of the shell, and an output component arranged below the discharge port; The outer tube forming mechanism includes a supporting assembly rotatably arranged on the frame and used for positioning and supporting the reinforcing layer, a first conveying assembly arranged on the frame and used for conveying paper to the outside of the reinforcing layer, a cutting assembly arranged on the frame and cooperating with the protrusion on the reinforcing layer to cut out an extension groove when the paper is rolled into the outer tube so that the protrusion extends to the outside of the outer tube, and a collecting assembly arranged on the frame and used for collecting waste cut by the cutting assembly; The second conveying mechanism includes a plurality of second positioning components disposed on the bracket between two adjacent first positioning components and used to position the support reinforcement layer, a second conveying component disposed outside the shell and conveying the reinforcement layer into the second positioning component through the feed port, and a first pushing component disposed in the shell and used to push the reinforcement layer to be assembled onto the support component through the second assembly channel; The specific working steps of applying this equipment are as follows: Step 1: Inner tube forming process, after the paper is rolled into the inner tube by the inner tube forming mechanism, the inner tube is positioned and transported to the assembly mechanism; Step 2: Positioning and supporting process, the reinforcing layer is transported to the outer tube forming mechanism for positioning and support by the second transport mechanism, and at the same time, the assembling mechanism cooperates with the first transport mechanism to connect an anti-drop cover to one end of the inner tube; Step 3: outer tube forming process, taking another paper and passing it through the first conveying component of the outer tube forming mechanism and the supporting component to cooperate with each other to roll it outside the reinforcing layer to form the outer tube, and at the same time, during the rolling process of the outer tube, the cutting component and the collecting component of the outer tube forming mechanism cooperate with the protrusion to cut the extension groove on the outer tube; Step 4: Sealing assembly process; after the reinforcing layer with the outer tube is positioned and assembled on the inner tube through the assembly mechanism, the assembly mechanism cooperates with the first conveying mechanism to connect another anti-detachment cover at the other end of the inner tube.

2. The method for automatically forming a paper tube according to claim 1, characterized in that: In step three, the cutting assembly cooperates with the protrusion to cut out the extension groove with a length of 10-25 mm and a width of 4-8 mm.

3. The paper tube automatic forming method according to claim 2, characterized in that: In step three, the cutting assembly cooperates with the protrusion to cut out 8-12 rows of the extension grooves at equal intervals along the circumference of the inner tube, and the number of the extension grooves in each row is 4-8.

4. A high-strength paper tube formed by the paper tube automatic forming method according to any one of claims 1 to 3, characterized in that: include: An outer tube for rolling up an outer winding layer, an inner tube arranged in the outer tube, a reinforcing layer arranged between the outer tube and the inner tube and used to support an inner cavity formed between the outer tube and the inner tube, a protrusion arranged on the reinforcing layer and connected to the extension groove on the outer tube to support the outer cavity formed between the winding layer and the outer tube, a connecting hole formed through the protrusion and connecting the outer cavity with the inner cavity, two anti-detachment covers respectively arranged at both ends of the inner tube, and an air hole formed through the anti-detachment cover and used to connect the outer cavity with the inner cavity.

5. The high-strength paper tube according to claim 4, characterized in that: The outer tube and the inner tube are both rolled from paper.

6. A high-strength paper tube according to claim 5, characterized in that: The paper rolled into the outer tube and the inner tube is preferably kraft paper, and the number of layers of the kraft paper rolled into the outer tube and the inner tube is 16-24.

7. The high-strength paper tube according to claim 4, characterized in that: The thickness of the outer tube and the inner tube are both 4-8 mm.

8. The high-strength paper tube according to claim 4, characterized in that: The reinforcement layer and the protrusion are made of high-strength plastic or aluminum alloy material in one piece.

9. The high-strength paper tube according to claim 4, characterized in that: The thickness of the reinforcement layer is 6-10 mm, and the length of the protrusion extending out of the extension groove is 4-8 mm.

10. The high-strength paper tube according to claim 4, characterized in that: The inner tube is inserted into the interior of the reinforcement layer, and the two anti-drop covers are respectively inserted into the interior of both ends of the inner tube.

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