Molded pulp threaded cylinder, manufacturing equipment thereof and assembly comprising molded pulp threaded cylinder

Abstract

The utility model relates to a molded pulp threaded cylinder, manufacturing equipment thereof and a component comprising the molded pulp threaded cylinder, the molded pulp threaded cylinder is cylindrical, two ends of the molded pulp threaded cylinder in the axial direction are respectively opened, and a threaded structure continuously extending along a spiral line is wound on the molded pulp threaded cylinder. The outer circumferential face of the pulp molding threaded cylinder protrudes towards the inner circumferential face, a threaded groove and a threaded protruding rib are formed on the outer circumferential face and the inner circumferential face of the pulp molding threaded cylinder respectively, and the threaded structure comprises the threaded groove in the outer circumferential face of the pulp molding threaded cylinder and the threaded protruding rib on the inner circumferential face of the pulp molding threaded cylinder. The molded pulp threaded cylinder is easy to process and meets the requirements of environmental protection, and as the threaded grooves are formed on the outer peripheral surface of the molded pulp threaded cylinder and the threaded convex ribs are formed on the inner peripheral surface of the molded pulp threaded cylinder, the outer peripheral surface and the inner peripheral surface of the molded pulp threaded cylinder are both provided with threaded structures, and the molded pulp threaded cylinder is convenient to use. Therefore, the application scene of the molded pulp threaded cylinder is enriched.

Description

Technical Field

[0001] The utility model relates to the field of container manufacturing, in particular to a pulp molded threaded barrel, a manufacturing device thereof and a component comprising the pulp molded threaded barrel. Background Art

[0002] Pulp molding materials are green and environmentally friendly. However, in the manufacturing process of pulp molded container covers or pulp molded containers, the threads and other structures used for connection are integrally processed and molded on the pulp molded container covers or pulp molded containers through the pulp molding process, which leads to the problem of difficulty in demolding and low production efficiency. If a threaded plastic ring is used instead, although the threads and other structures used for connection can be integrally molded on the peripheral wall surface of the threaded plastic ring through the injection molding process, since the threaded plastic ring is made of plastic, it is not conducive to environmental protection. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, one of the purposes of the present invention is to propose a pulp molded threaded barrel, which has the advantages of being easy to manufacture and green and environmentally friendly, which is beneficial to the manufacture of container cover assemblies and container assemblies, and improves the production efficiency of container cover assemblies and container assemblies.

[0005] To achieve the above-mentioned purpose, the utility model provides a pulp molded threaded barrel, which is cylindrical and has two axial ends open respectively. A threaded structure continuously extending along a spiral line is wound on the pulp molded threaded barrel, and the outer circumference of the pulp molded threaded barrel protrudes toward the inner circumference. Threaded grooves and threaded ribs are respectively formed on the outer circumference and inner circumference of the pulp molded threaded barrel. The threaded structure includes threaded grooves on the outer circumference and threaded ribs on the inner circumference. The pulp molded threaded barrel is used to connect a container and a container cover into one.

[0006] Therefore, the pulp molded threaded barrel of the present invention is easy to process and meets environmental protection requirements. Moreover, because the outer circumference of the pulp molded threaded barrel is formed with thread grooves and the inner circumference is formed with thread ribs, both the outer circumference and the inner circumference of the pulp molded threaded barrel have thread structures, which is conducive to enriching the application scenarios of the pulp molded threaded barrel.

[0007] The second purpose of the present invention is to provide a container cover assembly, including a container cover and the pulp molded threaded barrel of the present invention, wherein the pulp molded threaded barrel is arranged around the inner circumference of the container cover, the container cover is a pulp molded cover, and the pulp molded threaded barrel is adhesively connected to the container cover.

[0008] Therefore, the container cover assembly of the present invention is configured to be composed of a container cover and a pulp molded threaded barrel, which meets the requirements of easy processing and manufacturing, avoids the demolding difficulty problem of manufacturing a container cover with an internal thread by pulp molding one-piece molding, has high production efficiency, and has the advantage of being green and environmentally friendly.

[0009] The third purpose of the present invention is to propose a container assembly, including a container and the pulp molded threaded barrel of the present invention, wherein the pulp molded threaded barrel is arranged around the outer peripheral surface of the mouth ring of the container, the container is a pulp molded container, and the pulp molded threaded barrel is adhesively connected to the mouth ring.

[0010] Therefore, the container assembly of the present invention is configured to be composed of a container and a pulp molded threaded barrel, which meets the requirements of easy processing and manufacturing, avoids the demolding difficulties existing in the manufacture of containers with internal threads through pulp molding one-piece molding, has high production efficiency, and has the advantage of being green and environmentally friendly.

[0011] The fourth object of the present invention is to provide a manufacturing device for a pulp molding threaded barrel, which is used to process the pulp molding threaded barrel of the present invention, including: a paper tube machine, the paper tube machine includes a winding rod, the winding rod includes a first rod segment and a second rod segment arranged in sequence along the length direction of the winding rod, the outer circumference of the second rod segment is provided with a spiral groove, the pulp molding barrel blank produced by the paper tube machine is sleeved outside the winding rod and moves along the direction from the first rod segment to the second rod segment, and rotates around the axis of the winding rod; a rolling screw, the rolling screw is arranged parallel to the second rod segment of the winding rod, the outer circumference of the rolling screw is provided with a spiral rib, the rolling screw and the winding rod rotate relative to each other, and the winding rod and the rolling screw rotate in opposite directions, so as to pass through the rolling screw. The spiral rib cooperates with the spiral groove of the second rod section of the winding rod to roll out the threaded structure on the pulp molding tube blank which is sleeved outside the second rod section; a humidifying device, which is arranged opposite to the first rod section of the winding rod and is used to humidify the part of the pulp molding tube blank which is sleeved outside the first rod section; a heating device, which is located on the side of the first rod section away from the rolling rod behind the rolling screw on the moving path of the pulp molding tube blank, and is used to heat the part of the pulp molding tube blank which already has the threaded structure; a cutting device, which is arranged outside one end of the winding rod in the length direction and is located on the side of the second rod section away from the first rod section, and is used to cut and process the pulp molding tube blank which already has the threaded structure to obtain the pulp molding threaded tube.

[0012] Therefore, the manufacturing equipment of the pulp molded threaded barrel of the utility model has a simple structure and can simply and effectively process the thread structure on the pulp molded barrel blank to obtain the pulp molded threaded barrel.

[0013] Furthermore, the heating device is built into and / or externally disposed on the rolling rod.

[0014] Furthermore, the heating device includes at least one of a liquid flow channel heating device, an electric heating device, a light wave heating device, a hot air heating device, and a microwave heating device.

[0015] Furthermore, the heating device is an electric heating tube built into the winding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of a pulp molded threaded barrel according to an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 A front view of a pulp molded threaded barrel is shown in FIG.

[0018] Figure 3 It is a three-dimensional diagram of a pulp molding cylinder blank according to one embodiment of the present invention.

[0019] Figure 4 yes Figure 3 The front view of the pulp molding cylinder shown in FIG.

[0020] Figure 5 This is an exploded view of a container cover, a container, and a pulp molded threaded barrel according to an embodiment of the present invention.

[0021] Figure 6 It is an exploded view of a container cover assembly according to one embodiment of the present invention.

[0022] Figure 7 yes Figure 6 1. Assembly drawing of the container cover assembly shown in FIG.

[0023] Figure 8 It is an exploded view of a container assembly according to an embodiment of the present invention.

[0024] Figure 9 yes Figure 8 Assembly drawing of the container assembly shown in .

[0025] Figure 10 It is a schematic diagram of a manufacturing device according to an embodiment of the present invention.

[0026] Figure 11 yes Figure 10 Exploded view of the rolling rod and rolling screw shown in .

[0027] Explanation of the accompanying drawings: 100 container cover assembly; 10 container cover; 10a end wall; 10b peripheral wall; 200 container assembly; 20 container; 20a mouth ring; 20b container body; 30 pulp molding threaded barrel; 31 thread structure; 311 thread groove; 312 thread rib; 40 pulp molding barrel blank; 300 manufacturing equipment; 1 winding rod; 11 first rod section; 12 second rod section; 121 spiral groove; 2 rolling screw; 21 spiral rib; 3 humidifying device; 4 heating device; 5 cutting device. DETAILED DESCRIPTION

[0028] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0029] Next, with reference to the accompanying drawings, an embodiment of the pulp molding threaded barrel 30 of the present invention is described as follows.

[0030] like Figure 1 and Figure 2 As shown, the pulp molded threaded barrel 30 is cylindrical, and both ends of the pulp molded threaded barrel 30 in the axial direction Z are open, and a thread structure 31 continuously extending along a spiral line is coiled on the pulp molded threaded barrel 30. The outer circumference of the pulp molded threaded barrel 30 protrudes toward the inner circumference, and a thread groove 311 is formed on the outer circumference of the pulp molded threaded barrel 30, and a thread rib 312 is formed on the inner circumference of the pulp molded threaded barrel 30. The thread structure 31 includes the thread groove 311 on the outer circumference of the pulp molded threaded barrel 30 and the thread rib 312 on the inner circumference. That is, the thread structure 31 presents the form of the thread groove 311 on the outer circumference of the pulp molded threaded barrel 30, and the form of the thread rib 312 on the inner circumference of the pulp molded threaded barrel 30, and the positions of the thread groove 311 and the thread rib 312 correspond to each other.

[0031] For example, before processing the pulp molded threaded cylinder 30, a pulp molded cylinder blank 40 with smooth inner and outer circumferences can be processed using pulp molded materials (combined with Figure 3 and Figure 4 ), and then the thread structure 31 is machined on the pulp molding tube 40. When machining the thread structure 31, a portion of the wall of the pulp molding tube 40 can be pushed from the outer circumference toward the inner circumference, so that a concave groove appears on the outer circumference of the pulp molding tube 40, and a protruding rib appears on the inner circumference of the pulp molding tube 40. The groove extends continuously along the spiral line to define a thread groove 311. Correspondingly, the rib also extends continuously along the spiral line to define a thread rib 312. The thread groove 311 and the thread rib 312 correspond in position to each other to form the thread structure 31.

[0032] As a result, the pulp molded threaded barrel 30 is easy to process and meets environmental protection requirements. In addition, since the threaded grooves 311 are formed on the outer circumference of the pulp molded threaded barrel 30 and the threaded ribs 312 are formed on the inner circumference, both the outer circumference and the inner circumference of the pulp molded threaded barrel 30 have a threaded structure 31, which helps to enrich the application scenarios of the pulp molded threaded barrel 30.

[0033] For example, reference Figure 5 The pulp molded threaded barrel 30 can be used for the container cap 10 or the container 20. The container 20 can be of any type, such as a bottle, a can, a jar, or the like. The opening of the container 20 is the mouth ring 20a of the container 20, and the container cap 10 is positioned on the mouth ring 20a to seal the opening of the container 20. The shape of the container cap 10 is not limited, as long as the shape of the container cap 10 matches the shape of the mouth ring 20a of the container 20.

[0034] The container 20 is a bottle, the container cap 10 is a bottle cap, and the bottle mouth is a mouth ring 20a. For example, the outer circumference of the mouth ring 20a is smooth, and a pulp-molded threaded barrel 30 is secured to the outer circumference of the mouth ring 20a in an outer-sleeve manner. Another pulp-molded threaded barrel 30 of the same structure is secured to the inner smooth circumferential surface of the container cap 10 in an inner-sleeve manner. This allows the threaded ribs 312 of the pulp-molded threaded barrel 30 of the container cap 10 to mate with the threaded grooves 311 of the pulp-molded threaded barrel 30 on the bottle mouth ring 20a, thereby enabling the bottle and bottle cap to be opened or closed by screwing in or out. For example, the pulp-molded threaded barrel 30 within the container cap 10 may be threadedly engaged with the threaded grooves 311 of the pulp-molded threaded barrel 30 on the bottle mouth ring 20a.

[0035] Hereinafter, with reference to the accompanying drawings, an embodiment of the container cover assembly 100 of the present invention is described as follows.

[0036] Reference Figure 6 and Figure 7 The container cap assembly 100 includes a container cap 10 and a pulp molded threaded barrel 30 according to any embodiment of the present invention, wherein the pulp molded threaded barrel 30 is disposed around the inner circumference of the container cap 10. For example, the container cap 10 includes an end wall 10a and a peripheral wall 10b, wherein the peripheral wall 10b is annular. The end wall 10a is disposed at one axial end of the peripheral wall 10b, so that the container cap 10 is configured in a closed-end form. The pulp molded threaded barrel 30 is disposed around the inner circumference of the peripheral wall 10b.

[0037] Therefore, the container cap assembly 100 is configured to be composed of a container cap 10 and a pulp molded threaded barrel 30, which meets the requirements of easy processing and manufacturing, avoids the demolding difficulty problem of manufacturing a container cap with an internal thread by pulp molding one-piece molding, has high production efficiency, and has the advantage of being green and environmentally friendly.

[0038] The container cover 10 is a pulp molded cover, that is, the container cover 10 is also made of pulp molded material, thereby further improving the green and environmental protection of the container cover assembly 100.

[0039] The pulp molded threaded barrel 30 is bonded to the container cover 10. Thus, the pulp molded threaded barrel 30 and the container cover 10 are connected through the bonding process, which facilitates the connection operation of the pulp molded threaded barrel 30 and the container cover 10 and helps to improve the connection reliability of the pulp molded threaded barrel 30 and the container cover 10.

[0040] The container cover 10 is a pulp molded cover, and the pulp molded threaded barrel 30 is bonded to the container cover 10 , so that the two pulp molded materials can be simply and reliably connected together, which is conducive to mass production.

[0041] Below, with reference to the accompanying drawings, an embodiment of the container assembly 200 of the utility model is described as follows.

[0042] Reference Figure 8 and Figure 9 The container assembly 200 includes a container 20 and a pulp molded threaded barrel 30 according to any embodiment of the present invention. The pulp molded threaded barrel 30 is disposed around the outer circumference of the mouth ring 20a of the container 20. For example, the container 20 includes a mouth ring 20a and a container body 20b. The container body 20b defines a receiving space. The mouth ring 20a is connected to one end of the container body 20b and serves as the opening of the container 20.

[0043] Therefore, the container assembly 200 is configured to be composed of a container 20 and a pulp molded threaded barrel 30, which meets the requirements of easy processing and manufacturing, avoids the demolding difficulties that exist in manufacturing containers with internal threads through pulp molding one-piece molding, has high production efficiency, and has the advantage of being green and environmentally friendly.

[0044] The container 20 is a pulp molded container, that is, the container 20 is also made of pulp molded material, thereby further improving the environmental friendliness of the container assembly 200.

[0045] The pulp molded threaded barrel 30 is bonded to the mouth ring 20a. Thus, the pulp molded threaded barrel 30 and the mouth ring 20a are connected by the bonding process, thereby facilitating the connection operation of the pulp molded threaded barrel 30 and the mouth ring 20a and improving the connection reliability of the pulp molded threaded barrel 30 and the mouth ring 20a.

[0046] The container 20 is a pulp molded container, and the pulp molded threaded barrel 30 is bonded to the mouth ring 20a, so that the two pulp molded materials can be simply and reliably connected together, which is conducive to mass production.

[0047] Next, with reference to the accompanying drawings, an embodiment of the manufacturing equipment 300 of the present invention is described as follows.

[0048] The embodiment of the manufacturing apparatus 300 of the present invention is used to manufacture the pulp molded threaded barrel 30 according to any embodiment of the present invention.

[0049] like Figure 10 and Figure 11 As shown, manufacturing equipment 300 includes: a paper tube machine, a rolling screw 2, a humidifying device 3, a heating device 4, and a cutting device 5. The paper tube machine includes a winding rod 1, which includes a first rod segment 11 and a second rod segment 12 arranged in sequence along the length of the winding rod 1. The outer circumference of the second rod segment 12 is provided with a spiral groove 121. The pulp molding tube 40 produced by the paper tube machine is sleeved on the outer surface of the winding rod 1 and moves in the direction from the first rod segment 11 to the second rod segment 12, and rotates around the axis of the winding rod 1.

[0050] Among them, the winding rod 1 includes a first rod segment 11 and a second rod segment 12 arranged in sequence along the length direction of the winding rod 1, a spiral groove 121 is provided on the outer peripheral surface of the second rod segment 12, the rolling screw 2 is arranged parallel to the second rod segment 12 (that is, the axis of the rolling screw 2 is parallel to the axis of the second rod segment 12), and a spiral rib 21 is provided on the outer peripheral surface of the rolling screw 2. The rolling screw 2 rotates relative to the winding rod 1, and the winding rod 1 and the rolling screw 2 have opposite rotation directions (for example, when observed from the plane where the cross section of the rolling screw 2 is located, one of the winding rod 1 and the rolling screw 2 rotates clockwise and the other rotates counterclockwise), so that a threaded structure 31 is rolled out on the pulp molding cylinder blank 40 sleeved outside the second rod segment 12 through the cooperation of the spiral rib 21 and the spiral groove 121.

[0051] When manufacturing a pulp molded threaded cylinder 30, a pulp molded cylinder blank 40 that is sleeved on the winding rod 1 can be first processed by a paper tube machine, and then the subsequent thread structure 31 processing and other processes can be carried out by a rolling screw 2, thereby achieving continuous production. Moreover, since the pulp molded cylinder blank 40 processed by the paper tube machine itself moves along the axial direction of the winding rod 1 and rotates around the axis of the winding rod 1, this characteristic can be utilized and combined with the reverse rotation of the winding rod 1 and the rolling screw 2. The thread structure 31 can be rolled out on the pulp molded cylinder blank 40 by the cooperation of the spiral rib 21 and the spiral groove 121, thereby simplifying the equipment and reducing the use of additional drives. Among them, the structure of the paper tube machine and the technology for producing pulp molded cylinders are well known to those skilled in the art and will not be described in detail here.

[0052] The pulp molded tube blank 40 manufactured by the paper tube machine can move along the axial direction of the winding rod 1 from the first rod segment 11 to the second rod segment 12, and rotate around the axis of the winding rod 1. When a part of the pulp molded tube blank 40 moves to the outside of the second rod segment 12, under the cooperation of the spiral rib 21 of the rolling screw 2 and the spiral groove 121 of the winding rod 1, the part corresponding to the spiral rib 21 can be pushed from the outer circumference of the pulp molded tube blank 40 to the inner circumference, so that a concave thread groove 311 appears on the outer circumference of the pulp molded tube blank 40, and a convex thread rib 312 appears on the inner circumference of the pulp molded tube blank 40. The thread groove 311 corresponds to the position of the thread rib 312 to form a thread structure 31. The pulp molded tube blank 40 with the thread structure 31 is cut to obtain a pulp molded threaded tube 30. Therefore, the manufacturing equipment 300 is simple and can simply and effectively process the thread structure 31 on the pulp molding cylinder blank 40 to obtain the pulp molding threaded cylinder 30.

[0053] The humidifying device 3 is arranged opposite to the first rod segment 11 to humidify the pulp molding tube blank 40 that is sleeved outside the first rod segment 11. The heating device 4 is arranged on the side of the rolling screw 2 away from the first rod segment 11 and is used to heat the part of the pulp molding tube blank 40 where the thread structure 31 is rolled out.

[0054] The pulp molded tube blank 40 manufactured by the paper tube machine can move along the axial direction of the winding rod 1 from the first rod segment 11 to the second rod segment 12, and rotate around the axis of the winding rod 1. When a part of the pulp molded tube blank 40 moves to the outside of the first rod segment 11, the part of the pulp molded tube blank 40 that is sleeved outside the first rod segment 11 is pre-humidified by the humidifying device 3, and then when the pulp molded tube blank 40 moves to the outside of the second rod segment 12, the part of the pulp molded tube blank 40 that is sleeved outside the second rod segment 12 is processed into a threaded structure 31 by the cooperation of the spiral rib 21 and the spiral groove 121. The part of the pulp molded tube blank 40 with the threaded structure 31 continues to move in the direction away from the first rod segment 11. When the part with the threaded structure 31 moves away from the rolling screw 2 and reaches the heating area covered by the heating device 4, it can be heated and dried by the heating device 4.

[0055] Therefore, before the pulp molding tube blank 40 is processed with the thread structure 31, a humidification treatment is performed in advance, which can prevent the pulp molding tube blank 40 from being damaged during the extrusion of the thread, so that the thread structure 31 can be processed. In addition, the selection of the humidifying material can also achieve corresponding processing effects, such as making the processed thread structure 31 more stable, or making the processed pulp molding thread barrel 30 have other functions (such as waterproof and oil-proof functions), or playing at least two of the above-mentioned roles at the same time. Then, after the thread structure 31 is processed, it is heated and dried by the heating device 4, so that a pulp molding thread barrel 30 with a stable structure can be efficiently obtained, thereby improving the manufacturing efficiency of the pulp molding thread barrel 30.

[0056] The specific configuration of the humidifying device 3 is not limited. For example, humidification can be performed by soaking, spraying, or coating. The humidifying material is also not limited and can be selected according to the humidification requirements. For example, it can be a latex resin or an additive, so that the pulp molding threaded barrel 30 has good waterproof and oil-proof properties. The additives can include functional additives and process additives. Functional additives are additives for improving the final performance and quality of paper film products, such as fillers, sizing agents, reinforcing agents, waterproofing agents, oil-proofing agents, whitening agents, etc.; process additives are additives for promoting and improving the paper film forming process, preventing interference and reducing raw material and energy consumption, such as release agents, retention agents, resin control agents, preservatives, etc.

[0057] The specific arrangement of the heating device 4 is not limited. For example, the heating device 4 can be internally and / or externally disposed on the winding rod 1. For example, the heating device 4 can be completely disposed outside the winding rod 1, or the heating device 4 can be completely disposed inside the winding rod 1. Alternatively, the heating device 4 can be partially disposed outside the winding rod 1 and the remaining portion can be disposed inside the winding rod 1. Thus, the arrangement of the heating device 4 is flexible and can be designed in a variety of ways.

[0058] In addition, the heating device 4 can also be heated by at least one of liquid flow channel heating, electric heating, light wave heating, hot air heating, and microwave heating. The heating device 4 is easy to set up, easy to implement, and has a good heating effect.

[0059] Exemplarily, the liquid flow channel heating solution is built into the reel 1. For example, a flow channel is set in the reel 1 to circulate high-temperature liquid to heat the reel 1, and the reel 1 then heats the pulp molding cylinder 40 mounted outside it.

[0060] For example, the electric heater can be built into the reel 1 to transfer heat to the pulp molding tube 40 through the reel 1. The electric heater can also be external to the reel 1 to transfer heat to the pulp molding tube 40 by thermal radiation. For example, the electric heater can be an electric heating tube, an electric heating wire, or an electric heating plate.

[0061] For example, light wave heating, hot air heating, and microwave heating can all be externally placed on the rolling rod 1 , thereby simplifying the design of the rolling rod 1 .

[0062] Exemplarily, the heating device 4 is an electric heating tube built into the reel 1, so that the heating device 4 can transfer heat to the pulp molding tube 40 in a more concentrated manner, thereby improving heating efficiency. Exemplarily, the length direction of the electric heating tube can extend along the length direction of the reel 1, or the electric heating tube can extend along a spiral line around the central axis of the reel 1, so that the pulp molding tube 40 can be heated over a larger length range, thereby improving heating efficiency. For example, a mounting hole can be opened on the end surface of one end of the reel 1, and the electric heating tube can be installed into the reel 1 through the mounting hole, thereby facilitating installation of the electric heating tube.

[0063] like Figure 10 As shown, the cutting device 5 is provided outside one end of the length of the winding rod 1 and is located on the side of the second rod segment 12 away from the first rod segment 11. For example, when the portion of the pulp molding tube blank 40 processed with the threaded structure 31 leaves the winding rod 1 and exceeds the length of the cutter of the cutting device 5 to meet the required requirements, the cutter of the cutting device 5 cuts the pulp molding tube blank 40 to obtain a section of the pulp molding tube blank 40 with the threaded structure 31 that meets the required length. This section of the pulp molding tube blank 40 can be used as the pulp molding threaded tube 30. Therefore, by providing the cutting device 5 to automatically cut the pulp molding tube blank 40 with the threaded structure 31, a pulp molding threaded tube 30 with the required length can be obtained, thereby improving production efficiency.

[0064] For example, the cutting device 5 may include only one cutter, which can continuously cut the pulp molded tube blank 40, and obtain a pulp molded threaded tube 30 each time it is cut. Continuous cutting can continuously obtain multiple pulp molded threaded tubes 30, or, for another example, the cutting device 5 may include multiple cutters, which are arranged in parallel, and multiple pulp molded threaded tubes 30 are cut out simultaneously by the multiple cutters.

[0065] Next, with reference to the accompanying drawings, an embodiment of a method for manufacturing a pulp molded threaded barrel 30 according to the present invention is described as follows.

[0066] The embodiment of the manufacturing method of the present invention is used to manufacture the pulp molded threaded barrel 30 according to any embodiment of the present invention, and adopts the manufacturing device 300 of the present invention.

[0067] The manufacturing method includes the following steps: using a paper tube machine to manufacture a pulp molded tube blank 40, so that the pulp molded tube blank 40 is sleeved outside the winding rod 1 and moves in the direction from the first rod segment 11 to the second rod segment 12, and rotates around the axis of the winding rod 1; using a humidifying device 3 to humidify the part of the pulp molded tube blank 40 sleeved outside the first rod segment 11; controlling the rolling screw 2 and the winding rod 1 to rotate relative to each other in the opposite direction of rotation, so that a thread structure 31 is rolled out on the pulp molded tube blank 40; using a heating device 4 to heat the part of the pulp molded tube blank 40 with the rolled thread structure 31; using a cutting device 5 to cut the part of the pulp molded tube blank 40 that moves out of the winding rod 1 along the direction from the first rod segment 11 to the second rod segment 12 to obtain a pulp molded threaded tube 30.

[0068] Among them, since the rolling screw 2 and the winding rod 1 rotate relative to each other in opposite directions, the spiral groove 121 of the winding rod 1 and the spiral rib 21 of the rolling screw 2 cooperate with each other to process the threaded groove 311 on the outer peripheral surface of the pulp molding tube blank 40 sleeved on the winding rod 1, and the threaded rib 312 corresponding to the threaded groove 311 is formed on the inner peripheral surface of the pulp molding tube blank 40, thereby obtaining this pulp molding threaded tube 30 with a threaded structure 31.

[0069] The pulp molded tube blank 40 manufactured by the paper tube machine can move along the axial direction of the winding rod 1 from the first rod segment 11 to the second rod segment 12, and rotate around the axis of the winding rod 1. When the pulp molded tube blank 40 moves to the outside of the first rod segment 11, the part of the pulp molded tube blank 40 that is sleeved outside the first rod segment 11 is pre-humidified by the humidifying device 3, and then when the pulp molded tube blank 40 moves to the outside of the second rod segment 12, the part of the pulp molded tube blank 40 that is sleeved outside the second rod segment 12 is processed into a threaded structure 31 by the cooperation of the spiral rib 21 and the spiral groove 121. The part of the pulp molded tube blank 40 with the threaded structure 31 continues to move in the direction away from the first rod segment 11. When the part with the threaded structure 31 moves away from the rolling screw 2 and reaches the heating area covered by the heating device 4, it can be heated and dried by the heating device 4.

[0070] Therefore, before processing the threaded structure 31 of the pulp molded tube blank 40, a humidification treatment is performed in advance, which is beneficial to obtaining the corresponding processing effect through the selection of the humidifying material, such as making the processing of the threaded structure 31 easier, or making the processed threaded structure 31 more stable, or making the processed pulp molded threaded tube 30 have other functions (such as waterproof and oil-proof functions), or playing at least two of the above functions at the same time; then after processing the threaded structure 31, it is heated by the heating device 4, so that a pulp molded threaded tube 30 with a stable structure can be efficiently obtained, thereby improving the manufacturing efficiency of the pulp molded threaded tube 30.

[0071] In some embodiments, the humidifying device 3 sprays latex resin or additives onto the pulp molding cylinder 40, thereby ensuring that the processed pulp molding threaded cylinder 30 has excellent water and oil resistance. For example, additives may include functional additives and process additives. Functional additives are additives intended to improve the final performance and quality of paper film products, such as fillers, sizing agents, reinforcing agents, waterproofing agents, oil repellents, and brighteners. Process additives are additives intended to promote and improve the paper film forming process, prevent interference, and reduce raw material and energy consumption, such as release agents, retention agents, resin control agents, and preservatives.

[0072] When the portion of the pulp molding tube blank 40 processed with the threaded structure 31 leaves the winding rod 1 and exceeds the length of the cutter of the cutting device 5 to meet the required length, the cutter of the cutting device 5 cuts the pulp molding tube blank 40 to obtain a pulp molding threaded tube 30 with a threaded structure 31 that meets the required length. Therefore, by providing the cutting device 5 to automatically cut the pulp molding tube blank 40 processed with the threaded structure 31, a pulp molding threaded tube 30 with a length that meets the required length is obtained, thereby improving production efficiency.

[0073] Next, an embodiment of a method for manufacturing the container cover assembly 100 of the present invention is described as follows.

[0074] The manufacturing method of the container cap assembly 100 includes the following steps: obtaining the container cap 10 by pulp molding; manufacturing the pulp molded threaded barrel 30 according to the manufacturing method of the pulp molded threaded barrel 30 of the present invention; and installing the pulp molded threaded barrel 30 into the container cap 10 and bonding it to the inner circumferential surface of the container cap 10. The steps of manufacturing the container cap 10 and the steps of manufacturing the pulp molded threaded barrel 30 are not limited in order and can be performed simultaneously or sequentially. The container cap 10 obtained by pulp molding can be in the shape of a cap body composed of an end wall 10a and a peripheral wall 10b, with one end open.

[0075] Thus, the manufacturing method of the container cap assembly 100 according to the embodiment of the present invention is simple and convenient, does not have the problem of demolding difficulties, has high production efficiency, and has the advantage of being environmentally friendly. In addition, the container cap assembly 100 of the present invention can also be manufactured using the manufacturing method of the container cap assembly 100 of this embodiment, which will not be described in detail here.

[0076] Next, an embodiment of a method for manufacturing the container assembly 200 of the present invention is described as follows.

[0077] The manufacturing method of the container assembly 200 includes the following steps: obtaining the container 20 by pulp molding; manufacturing the pulp molded threaded barrel 30 according to the manufacturing method of the pulp molded threaded barrel 30 of the present invention; and sleeve-mounting the pulp molded threaded barrel 30 over the mouth ring 20a of the container 20 and bonding the same to the mouth ring 20a. The steps of manufacturing the container 20 and the steps of manufacturing the pulp molded threaded barrel 30 are not limited in order and can be performed simultaneously or sequentially.

[0078] Thus, the manufacturing method of the container assembly 200 according to the embodiment of the present invention is simple and convenient, does not cause demolding difficulties, has high production efficiency, and has the advantage of being environmentally friendly. In addition, the container assembly 200 of the present invention can also be manufactured using the manufacturing method of the container assembly 200 of this embodiment, which will not be described in detail here.

[0079] The following is a specific embodiment of the method for manufacturing the pulp molded threaded barrel 30 of the present invention.

[0080] A pulp molding tube 40 is manufactured by a paper tube machine. The pulp molding tube 40 is sleeved on a reel 1 and rotates and moves along the axis of the reel 1. The reel 1 includes a first rod segment 11 and a second rod segment 12. The first rod segment 11 is located upstream of the second rod segment 12. The outer circumference of the second rod segment 12 is provided with a spiral groove 121.

[0081] The part of the pulp molding tube blank 40 that is sleeved outside the first rod segment 11 of the winding rod 1 is humidified by the humidifying device 3, and a rolling screw 2 is rotatably arranged on the circumferential side of the second rod segment 12. The rolling screw 2 cooperates with the second rod segment 12 to roll a thread groove 311 on the outer circumferential surface of the part of the pulp molding tube blank 40 that is sleeved outside the second rod segment 12 of the winding rod 1, and correspondingly, a thread rib 312 corresponding to the thread groove 311 is formed on the inner circumferential surface of this part.

[0082] The portion of the pulp molded tube blank 40 rolled by the rolling screw 2 is dried by the heating device 4 , and the dried pulp molded tube blank 40 is then cut by the cutting device 5 to obtain a pulp molded threaded tube 30 that meets the length requirements.

[0083] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A pulp molded threaded barrel, characterized in that: The pulp molded threaded barrel is cylindrical and both ends of the pulp molded threaded barrel in the axial direction are open respectively. A threaded structure continuously extending along the spiral line is coiled on the pulp molded threaded barrel. The outer circumference of the pulp molded threaded barrel protrudes toward the inner circumference. Thread grooves and thread ribs are respectively formed on the outer circumference and inner circumference of the pulp molded threaded barrel. The thread structure includes thread grooves on the outer circumference of the pulp molded threaded barrel and thread ribs on the inner circumference. The pulp molded threaded barrel is used to connect the container and the container cover into one.

2. A container cover assembly, characterized in that: It comprises a container cover and the pulp molded threaded barrel according to claim 1, wherein the pulp molded threaded barrel is arranged around the inner circumference of the container cover, the container cover is a pulp molded cover, and the pulp molded threaded barrel is bonded to the container cover.

3. A container assembly, characterized in that: It comprises a container and the pulp molded threaded barrel according to claim 1, wherein the pulp molded threaded barrel is arranged around the outer peripheral surface of the mouth ring of the container, the container is a pulp molded container, and the pulp molded threaded barrel is bonded to the mouth ring.

4. A manufacturing device for pulp molded threaded barrel, characterized in that: Used for processing the pulp molded threaded barrel according to claim 1, comprising: A paper tube machine, comprising a winding rod, the winding rod comprising a first rod segment and a second rod segment arranged in sequence along the length direction of the winding rod, the outer circumference of the second rod segment being provided with a spiral groove, the pulp molding tube blank produced by the paper tube machine being sleeved outside the winding rod and moving in a direction from the first rod segment to the second rod segment, and rotating around the axis of the winding rod; A rolling screw, wherein the rolling screw is arranged parallel to the second rod section of the winding rod, and a spiral rib is provided on the outer circumferential surface of the rolling screw. The rolling screw and the winding rod rotate relative to each other, and the winding rod and the rolling screw rotate in opposite directions, so that the spiral rib of the rolling screw cooperates with the spiral groove of the second rod section of the winding rod to roll out the thread structure on the pulp molding cylinder sleeved outside the second rod section; a humidifying device, the humidifying device being arranged opposite to the first rod section of the winding rod and being used for humidifying the portion of the pulp molding cylinder sleeved outside the first rod section; A heating device, located on a side of a first rod section behind the rolling screw and away from the winding rod on a moving path of the pulp molding barrel, for heating a portion of the pulp molding barrel having the threaded structure; A cutting device is provided outside one end of the winding rod in the length direction and is located on the side of the second rod segment away from the first rod segment, and is used for cutting and processing the pulp molding tube blank having the threaded structure to obtain the pulp molding threaded tube.

5. The manufacturing equipment for pulp molding threaded barrel according to claim 4, characterized in that: The heating device is built into and / or externally arranged on the rolling rod.

6. The manufacturing equipment for pulp molded threaded barrel according to claim 4 or 5, characterized in that: The heating device includes at least one of a liquid flow channel heating device, an electric heating device, a light wave heating device, a hot air heating device, and a microwave heating device.

7. The manufacturing equipment for pulp molding threaded barrel according to claim 6, characterized in that: The heating device is an electric heating tube built into the winding rod.

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