Pulp-molded threaded cylinder and manufacturing device therefor, and assembly comprising pulp-molded threaded cylinder

Abstract

The present invention relates to a pulp-molded threaded cylinder and a manufacturing device therefor, and an assembly comprising the pulp-molded threaded cylinder. The pulp-molded threaded cylinder is cylindrical, and both axial ends of the pulp-molded threaded cylinder are respectively open; a threaded structure continuously extending along a spiral line is wound around the pulp-molded threaded cylinder; the outer peripheral surface of the pulp-molded threaded cylinder protrudes toward the inner peripheral surface; threaded grooves and threaded ribs are respectively formed on the outer and inner peripheral surfaces of the pulp-molded threaded cylinder; and the threaded structure comprises the threaded grooves on the outer peripheral surface of the pulp-molded threaded cylinder and the threaded ribs on the inner peripheral surface thereof. The pulp-molded threaded cylinder of the present invention is easy to process and meets requirements of environmental protection. Moreover, because the threaded grooves are formed on the outer peripheral surface of the pulp-molded threaded cylinder and the threaded ribs are formed on the inner peripheral surface thereof, both the outer peripheral surface and the inner peripheral surface of the pulp-molded threaded cylinder have the threaded structure, which is conducive to enriching application scenarios of the pulp-molded threaded cylinder.

Description

Paper pulp molded threaded cylinder, manufacturing equipment thereof and assembly comprising the paper pulp molded threaded cylinder TECHNICAL FIELD

[0001] The present application relates to the field of container manufacturing, in particular to a paper pulp molded threaded cylinder, manufacturing equipment thereof and an assembly comprising the paper pulp molded threaded cylinder. BACKGROUND

[0002] The paper pulp molded material has the characteristics of green environmental protection, but in the manufacturing process of the paper pulp molded container cover or the paper pulp molded container, the thread structure for connection is integrally formed on the paper pulp molded container cover or the paper pulp molded container through a paper pulp molding process, which has the problem of difficult demolding and low production efficiency; if a threaded plastic ring is used instead, although the thread structure for connection can be integrally formed on the circumferential wall surface of the threaded plastic ring through an injection molding process, the threaded plastic ring is made of plastic material, which is not conducive to environmental protection. SUMMARY

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

[0004] To this end, one of the purposes of the present application is to provide a paper pulp molded threaded cylinder, which has the advantages of easy manufacturing and green environmental protection, is conducive to the manufacturing of a container cover assembly and a container assembly, and improves the production efficiency of the container cover assembly and the container assembly.

[0005] To achieve the above-mentioned purposes, the paper pulp molded threaded cylinder of the present application is a cylindrical cylinder, both ends of the paper pulp molded threaded cylinder in the axial direction are respectively open, a thread structure continuously extending along a spiral line is wound on the paper pulp molded threaded cylinder, the outer circumferential surface of the paper pulp molded threaded cylinder protrudes towards the inner circumferential surface, thread grooves and thread ribs are respectively formed on the outer circumferential surface and the inner circumferential surface of the paper pulp molded threaded cylinder, the thread structure includes the thread grooves on the outer circumferential surface and the thread ribs on the inner circumferential surface of the paper pulp molded threaded cylinder, and the paper pulp molded threaded cylinder is used to connect a container and a container cover into one body.

[0006] Therefore, the paper pulp molded threaded cylinder of the present application is easy to process and meets the requirements of green environmental protection. Moreover, since the thread grooves are formed on the outer circumferential surface of the paper pulp molded threaded cylinder and the thread ribs are formed on the inner circumferential surface, the outer circumferential surface and the inner circumferential surface of the paper pulp molded threaded cylinder both have thread structures, which is conducive to enriching the application scenarios of the paper pulp molded threaded cylinder.

[0007] The second purpose of the present application is to provide a container cover assembly comprising a container cover and the paper pulp molded threaded cylinder of the present application, the paper pulp molded threaded cylinder is arranged around the inner circumferential surface of the container cover, the container cover is a paper pulp molded cover, and the paper pulp molded threaded cylinder is connected to the container cover by adhesion.

[0008] Therefore, the container cap assembly of the present application is composed of a container cap and a pulp molded threaded cylinder, which meets the requirement of easy processing and manufacturing, avoids the demolding difficulty problem of manufacturing a container cap with internal threads by pulp molding integral molding, has high production efficiency, and has the advantages of green environmental protection.

[0009] The third object of the present application is to provide a container assembly, which comprises a container and the pulp molded threaded cylinder of the present application, the pulp molded threaded cylinder is arranged around the outer circumferential surface of the mouth ring of the container, the container is a pulp molded container, and the pulp molded threaded cylinder is connected to the mouth ring by adhesion.

[0010] Therefore, the container assembly of the present application is composed of a container and a pulp molded threaded cylinder, which meets the requirement of easy processing and manufacturing, avoids the demolding difficulty problem of manufacturing a container with internal threads by pulp molding integral molding, has high production efficiency, and has the advantages of green environmental protection.

[0011] The fourth object of the present application is to provide a manufacturing equipment for a pulp molded threaded cylinder, which is used for processing the pulp molded threaded cylinder of the present application, and comprises a paper tube machine, a rolling screw, a humidifying device, a heating device, and a cutting device. The paper tube machine comprises a rolling rod, the rolling rod comprises a first rod segment and a second rod segment arranged in sequence along the length direction of the rolling rod, the outer circumferential surface of the second rod segment is provided with a spiral groove, the pulp molded cylinder blank produced by the paper tube machine is sleeved on the outside of the rolling rod and moves along the direction from the first rod segment to the second rod segment and rotates around the axis of the rolling rod; the rolling screw is arranged in parallel with the second rod segment of the rolling rod, the outer circumferential surface of the rolling screw is provided with a spiral convex rib, the rolling screw rotates relative to the rolling rod, and the rotating direction of the rolling rod is opposite to that of the rolling screw, so that the spiral convex rib of the rolling screw cooperates with the spiral groove of the second rod segment of the rolling rod to roll and press the spiral thread structure on the pulp molded cylinder blank sleeved on the outside of the second rod segment; the humidifying device is arranged opposite to the first rod segment of the rolling rod and is used for humidifying the part of the pulp molded cylinder blank sleeved on the outside of the first rod segment; the heating device is arranged on the side of the rolling screw away from the first rod segment in the moving path of the pulp molded cylinder blank and is used for heating the part of the pulp molded cylinder blank having the spiral thread structure; and the cutting device is arranged on one end of the length direction of the rolling rod and is located on the side of the second rod segment away from the first rod segment, which is used for cutting and processing the pulp molded cylinder blank having the spiral thread structure to obtain the pulp molded threaded cylinder.

[0012] Therefore, the manufacturing equipment for the pulp molded threaded cylinder of the present application has simple structure and can simply and effectively process the spiral thread structure on the pulp molded cylinder blank to obtain the pulp molded threaded cylinder.

[0013] Further, the heating device is built-in and / or external to the winding rod.

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

[0015] Further, the heating device is an electric heating tube built-in to the winding rod.

[0016] The fifth object of the present application is to provide a manufacturing method of a pulp molded threaded cylinder, which uses the manufacturing equipment of the pulp molded threaded cylinder, and comprises the steps of: manufacturing a pulp molded cylinder blank by using the paper tube machine, so that the pulp molded cylinder blank is sleeved on the winding rod and moves along the direction from the first rod section to the second rod section and rotates around the axis of the winding rod; humidifying the part of the pulp molded cylinder blank sleeved on the first rod section by using the humidifying device; controlling the relative rotation of the rolling screw and the winding rod in the opposite direction of the rotation direction of the winding rod, so that the screw thread structure is rolled on the pulp molded cylinder blank; heating the part of the pulp molded cylinder blank on which the screw thread structure is rolled by using the heating device; and cutting the part of the pulp molded cylinder blank moved out of the winding rod along the direction from the first rod section to the second rod section by using the cutting device, so as to obtain the pulp molded threaded cylinder.

[0017] Therefore, the manufacturing method of the pulp molded threaded cylinder is simple and effective, and can simply and effectively process the screw thread structure on the pulp molded cylinder blank to obtain the pulp molded threaded cylinder.

[0018] The sixth object of the present application is to provide a manufacturing method of a container cover assembly, which comprises a container cover and a pulp molded threaded cylinder, and comprises the steps of: obtaining the container cover by pulp molding; manufacturing the pulp molded threaded cylinder by using the manufacturing method of the pulp molded threaded cylinder; and sleeving the pulp molded threaded cylinder on the container cover and bonding the pulp molded threaded cylinder on the inner circumferential surface of the container cover.

[0019] Therefore, the manufacturing method of the container cover assembly is simple and convenient, and does not have the problem of difficult demolding, has high production efficiency, and has the advantages of green environmental protection.

[0020] The seventh object of the present application is to provide a manufacturing method of a container assembly, which comprises a container and a pulp molded threaded cylinder, and comprises the steps of: obtaining the container by pulp molding; manufacturing the pulp molded threaded cylinder by using the manufacturing method of the pulp molded threaded cylinder; and sleeving the pulp molded threaded cylinder on the mouth ring of the container and bonding the pulp molded threaded cylinder with the mouth ring.

[0021] Therefore, the manufacturing method of the container assembly of the present application is simple and convenient, and has no demolding difficulty problem, and has high production efficiency, and the manufactured container cap assembly has the advantages of green environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a perspective view of a paper pulp molded threaded cylinder according to an embodiment of the present application.

[0023] Fig. 2 is a front view of the paper pulp molded threaded cylinder shown in Fig. 1.

[0024] Fig. 3 is a perspective view of a paper pulp molded cylinder blank according to an embodiment of the present application.

[0025] Fig. 4 is a front view of the paper pulp molded cylinder blank shown in Fig. 3.

[0026] Fig. 5 is an exploded view of a container cap, a container and a paper pulp molded threaded cylinder according to an embodiment of the present application.

[0027] Fig. 6 is an exploded view of a container cap assembly according to an embodiment of the present application.

[0028] Fig. 7 is an assembly view of the container cap assembly shown in Fig. 6.

[0029] Fig. 8 is an exploded view of a container assembly according to an embodiment of the present application.

[0030] Fig. 9 is an assembly view of the container assembly shown in Fig. 8.

[0031] Fig. 10 is a schematic view of a manufacturing apparatus according to an embodiment of the present application.

[0032] Fig. 11 is an exploded view of a winding rod and a rolling screw shown in Fig. 10.

[0033] BRIEF DESCRIPTION OF DRAWINGS: 100 container cap assembly; 10 container cap; 10a end wall; 10b peripheral wall; 200 container assembly; 20 container; 20a mouth ring; 20b container body; 30 paper pulp molded threaded cylinder; 31 threaded structure; 311 threaded groove; 312 threaded ridge; 40 paper pulp molded cylinder blank; 300 manufacturing apparatus; 1 winding rod; 11 first rod segment; 12 second rod segment; 121 helical groove; 2 rolling screw; 21 helical ridge; 3 humidifying device; 4 heating device; 5 cutting device. Embodiment of the present application

[0034] In order to further explain the technical solutions of the present application, the present application will be described in detail below through specific embodiments.

[0035] Below, referring to the drawings, an embodiment of the paper pulp molded threaded cylinder 30 of the present application is described as follows.

[0036] As shown in FIG. 1 and FIG. 2, the pulp molded threaded cylinder 30 is a cylindrical cylinder, both ends of the pulp molded threaded cylinder 30 in the axial direction Z are open, and the pulp molded threaded cylinder 30 is wound with a thread structure 31 extending continuously along a helix, the outer circumferential surface of the pulp molded threaded cylinder 30 protrudes towards the inner circumferential surface, the thread grooves 311 are formed on the outer circumferential surface of the pulp molded threaded cylinder 30, and the thread ribs 312 are formed on the inner circumferential surface of the pulp molded threaded cylinder 30, and the thread structure 31 includes the thread grooves 311 on the outer circumferential surface of the pulp molded threaded cylinder 30 and the thread ribs 312 on the inner circumferential surface of the pulp molded threaded cylinder 30. That is, the thread structure 31 presents the form of the thread grooves 311 on the outer circumferential surface of the pulp molded threaded cylinder 30, and presents the form of the thread ribs 312 on the inner circumferential surface of the pulp molded threaded cylinder 30, and the positions of the thread grooves 311 and the thread ribs 312 correspond.

[0037] For example, before processing the pulp molded threaded cylinder 30, a pulp molded cylinder blank 40 with smooth inner and outer circumferential surfaces can be first processed (combined with FIG. 3 and FIG. 4), and then the above-mentioned thread structure 31 can be processed on the pulp molded cylinder blank 40. When processing the thread structure 31, a part of the cylinder wall of the pulp molded cylinder blank 40 can be pushed from the outer circumferential surface to the inner circumferential surface, so that the outer circumferential surface of the pulp molded cylinder blank 40 appears a concave groove, and the inner circumferential surface of the pulp molded cylinder blank 40 appears a convex rib, the concave groove continuously extends along a helix to define the thread grooves 311, and correspondingly, the convex rib also continuously extends along the helix to define the thread ribs 312, and the thread grooves 311 and the thread ribs 312 correspond in position to form the thread structure 31.

[0038] Therefore, the pulp molded threaded cylinder 30 is easy to process and meets the requirements of green environmental protection. Moreover, since the thread grooves 311 are formed on the outer circumferential surface of the pulp molded threaded cylinder 30, and the thread ribs 312 are formed on the inner circumferential surface of the pulp molded threaded cylinder 30, the outer circumferential surface and the inner circumferential surface of the pulp molded threaded cylinder 30 both have the thread structure 31, thereby facilitating the enrichment of the application scenarios of the pulp molded threaded cylinder 30.

[0039] For example, referring to FIG. 5, the pulp molded threaded cylinder 30 can be used for the container cover 10, and can also be used for the container 20. The type of the container 20 is not limited, for example, the container 20 can be a bottle, a jar, a pot, etc. The opening position of the container 20 is the mouth ring 20a of the container 20, and the container cover 10 is covered on the mouth ring 20a to close the opening position of the container 20, and the form of the container cover 10 is not limited, and the container cover 10 can be matched with the form of the mouth ring 20a of the container 20.

[0040] The container 20 is a bottle, the container cover 10 is a bottle cap, and the bottle mouth of the bottle is a mouth ring 20a. Exemplarily, the outer circumferential surface of the mouth ring 20a is smooth, and a pulp molded threaded cylinder 30 can be fixed to the outer circumferential surface of the mouth ring 20a in a sleeving manner. Another pulp molded threaded cylinder 30 of the same structure is fixed to the inner circumferential smooth ring surface of the container cover 10 in an inner manner. In this way, the threaded convex ribs 312 of the pulp molded threaded cylinder 30 of the container cover 10 are matched with the threaded grooves 311 of the pulp molded threaded cylinder 30 on the bottle mouth ring 20a to form a screwing or unscrewing mode to open or close the bottle and the bottle cap. Exemplarily, it is also possible that the pulp molded threaded cylinder 30 arranged in the container cover 10 is combined with the threaded convex ribs 312 of the pulp molded threaded cylinder 30 on the bottle mouth ring 20a in a threaded manner.

[0041] Hereinafter, with reference to the accompanying drawings, an embodiment of the container cover assembly 100 of the application is described as follows.

[0042] With reference to FIGS. 6 and 7, the container cover assembly 100 comprises a container cover 10 and a pulp molded threaded cylinder 30 according to any embodiment of the application, and the pulp molded threaded cylinder 30 is arranged around the inner circumferential surface of the container cover 10. Exemplarily, the container cover 10 comprises an end wall 10a and a circumferential wall 10b, the circumferential wall 10b is annular, and the end wall 10a is arranged at one axial end of the circumferential wall 10b, so that the container cover 10 is configured in a closed end form, and the pulp molded threaded cylinder 30 is arranged around the inner circumferential surface of the circumferential wall 10b.

[0043] Therefore, the container cover assembly 100 is arranged to be composed of the container cover 10 and the pulp molded threaded cylinder 30, which meets the requirement of easy processing and manufacturing, avoids the demolding difficulty problem existing in the manufacturing of the container cover with internal threads by pulp molding integral molding, has higher production efficiency, and has the advantages of green environmental protection.

[0044] The container cover 10 is a pulp molded cover, that is, the container cover 10 is also processed from pulp molded material, so that the green environmental protection of the container cover assembly 100 can be further improved.

[0045] The pulp molded threaded cylinder 30 is connected to the container cover 10 by adhesion, so that the pulp molded threaded cylinder 30 and the container cover 10 are connected by the adhesion process, which facilitates the connection operation of the pulp molded threaded cylinder 30 and the container cover 10 and is beneficial to improving the connection reliability of the pulp molded threaded cylinder 30 and the container cover 10.

[0046] The container cover 10 is a pulp molded cover, and the pulp molded threaded cylinder 30 is connected to the container cover 10 by adhesion, so that the two kinds of pulp molded materials can be simply and reliably connected together, which is beneficial to batch production.

[0047] Hereinafter, with reference to the accompanying drawings, an embodiment of the container assembly 200 of the application is described as follows.

[0048] Referring to FIGS. 8 and 9, the container assembly 200 includes a container 20 and a pulp molded threaded barrel 30 according to any embodiment of the present application, which is arranged on the outer circumferential surface of a mouth ring 20a of the container 20. Exemplarily, the container 20 includes the mouth ring 20a and a container body 20b defining a containing space, the mouth ring 20a being connected to one end of the container body 20b as an opening of the container 20.

[0049] Thus, the container assembly 200 is provided to be composed of the container 20 and the pulp molded threaded barrel 30, meeting the requirement of easy processing and manufacturing, avoiding the demolding difficulty problem existing in manufacturing the container with internal threads by pulp molding integral molding, having higher production efficiency, and having the advantage of green environmental protection.

[0050] The container 20 is a pulp molded container. That is, the container 20 is also processed from pulp molded material, so as to further improve the green environmental protection of the container assembly 200.

[0051] The pulp molded threaded barrel 30 is adhesively connected to the mouth ring 20a. Thus, the pulp molded threaded barrel 30 and the mouth ring 20a are connected by the adhesion process, so as to facilitate the connection operation of the pulp molded threaded barrel 30 and the mouth ring 20a, and to facilitate the improvement of the connection reliability of the pulp molded threaded barrel 30 and the mouth ring 20a.

[0052] The container 20 is a pulp molded container, and the pulp molded threaded barrel 30 is adhesively connected to the mouth ring 20a, so that the two kinds of pulp molded materials can be simply and reliably connected together, which is beneficial to batch production.

[0053] Hereinafter, an embodiment of a manufacturing equipment 300 of the present application is described with reference to the accompanying drawings.

[0054] The embodiment of the manufacturing equipment 300 of the present application is used for processing the pulp molded threaded barrel 30 according to any embodiment of the present application.

[0055] As shown in FIGS. 10 and 11, the 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 including a first rod segment 11 and a second rod segment 12 arranged in sequence along the length direction of the winding rod 1, a helical groove 121 being arranged on the outer circumferential surface of the second rod segment 12, a pulp molded barrel blank 40 produced by the paper tube machine being sleeved on the winding rod 1 and moving along the direction from the first rod segment 11 to the second rod segment 12, and rotating around the axis of the winding rod 1.

[0056] The winding rod 1 comprises a first rod segment 11 and a second rod segment 12 arranged in sequence along the length direction of the winding rod 1, and the outer circumferential surface of the second rod segment 12 is provided with a helical groove 121. The rolling screw rod 2 is arranged in parallel with the second rod segment 12 (i.e. the axis of the rolling screw rod 2 is parallel to the axis of the second rod segment 12), and the outer circumferential surface of the rolling screw rod 2 is provided with a helical protrusion 21. The rolling screw rod 2 rotates relative to the winding rod 1, and the rotating directions of the winding rod 1 and the rolling screw rod 2 are opposite (for example, from the plane of the cross section of the rolling screw rod 2, one of the winding rod 1 and the rolling screw rod 2 rotates clockwise, and the other rotates counterclockwise), so as to roll out the thread structure 31 on the paper pulp molding cylinder blank 40 sleeved outside the second rod segment 12 through the cooperation of the helical protrusion 21 and the helical groove 121.

[0057] When the paper pulp molding thread cylinder 30 is manufactured, the paper pulp molding cylinder blank 40 sleeved outside the winding rod 1 can be first processed by a paper tube machine, and then subsequent thread structure 31 processing and other procedures are performed by the rolling screw rod 2, so that continuous production can be realized. Moreover, the paper pulp molding cylinder blank 40 processed by the paper tube machine itself moves along the axis direction of the winding rod 1 and rotates around the axis of the winding rod 1, so that the thread structure 31 can be rolled out on the paper pulp molding cylinder blank 40 through the cooperation of the helical protrusion 21 and the helical groove 121 by utilizing this characteristic and combining the opposite rotating directions of the winding rod 1 and the rolling screw rod 2, so that the equipment can be simplified and the use of additional driving can be reduced. The structure of the paper tube machine and the technology for manufacturing the paper pulp molding cylinder are well known to those skilled in the art, and will not be described here.

[0058] The paper pulp molding cylinder blank 40 manufactured by the paper tube machine can move along the axis 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 paper pulp molding cylinder blank 40 moves outside the second rod segment 12, the part corresponding to the helical protrusion 21 can be pushed from the outer circumferential surface to the inner circumferential surface of the paper pulp molding cylinder blank 40 under the cooperation of the helical protrusion 21 of the rolling screw rod 2 and the helical groove 121 of the winding rod 1, so that the thread groove 311 recessed on the outer circumferential surface of the paper pulp molding cylinder blank 40 and the thread protrusion 312 protruded on the inner circumferential surface of the paper pulp molding cylinder blank 40 are formed. The thread groove 311 and the thread protrusion 312 correspond in position to form the thread structure 31. The paper pulp molding cylinder blank 40 after the thread structure 31 is processed is cut to obtain the paper pulp molding thread cylinder 30. Thus, the manufacturing equipment 300 is simple, and the thread structure 31 can be simply and effectively processed on the paper pulp molding cylinder blank 40 to obtain the paper pulp molding thread cylinder 30.

[0059] The humidifying device 3 is arranged opposite to the first rod segment 11 to humidify the paper pulp molding cylinder blank 40 sleeved outside the first rod segment 11. The heating device 4 is arranged on the side of the rolling screw rod 2 away from the first rod segment 11 and is used to heat the part of the paper pulp molding cylinder blank 40 on which the thread structure 31 is rolled out.

[0060] The paper pulp molding cylinder blank 40 manufactured by the paper tube machine can move along the axial direction of the winding rod 1 from the first rod section 11 to the second rod section 12 and rotate around the axis of the winding rod 1. When the paper pulp molding cylinder blank 40 moves partially out of the first rod section 11, the portion of the paper pulp molding cylinder blank 40 sleeved outside the first rod section 11 is pre-humidified by the humidifying device 3. Then, when the paper pulp molding cylinder blank 40 moves to the second rod section 12, the portion of the paper pulp molding cylinder blank 40 sleeved outside the second rod section 12 is processed into the threaded structure 31 by the cooperation of the helical protrusions 21 and the helical grooves 121. The portion of the paper pulp molding cylinder blank 40 with the threaded structure 31 continues to move away from the first rod section 11. When the portion with the threaded structure 31 moves away from the rolling screw rod 2 and reaches the heating area covered by the heating device 4, it can be heated and dried by the heating device 4.

[0061] Therefore, the paper pulp molding cylinder blank 40 is pre-humidified before the threaded structure 31 is processed, which can avoid damage to the paper pulp molding cylinder blank 40 when the threaded structure 31 is extruded, so that the threaded structure 31 can be processed. In addition, the selection of the humidifying material can also achieve corresponding processing effects, such as making the processed threaded structure 31 more stable, or making the processed paper pulp molding threaded cylinder 30 have other functions (such as waterproof and oil-proof functions), or simultaneously serving at least two of the above functions. Then, after the threaded structure 31 is processed, the heating and drying are performed by the heating device 4, so that a paper pulp molding threaded cylinder 30 with stable structure can be efficiently obtained, thereby improving the manufacturing efficiency of the paper pulp molding threaded cylinder 30.

[0062] The specific form of the humidifying device 3 is not limited, for example, the humidifying can be performed by soaking, spraying or spraying, and the humidifying material is not limited and can be selected according to the humidifying requirement. For example, it can be latex resin or an additive, so that the paper pulp molding threaded cylinder 30 has good waterproof and oil-proof performance. The additive can include functional additives and process additives. The functional additives are a kind of additives for improving the final performance and quality of paper products, such as fillers, sizing agents, reinforcing agents, waterproof agents, oil-proof agents, whitening agents, etc. The process additives are a kind of additives for promoting and improving the paper forming process, preventing interference and reducing raw material and energy consumption, such as release agents, retention aids, resin control agents, preservatives, etc.

[0063] The specific form of the heating device 4 is not limited, for example, the heating device 4 can be built-in and / or external to the winding rod 1, for example, the heating device 4 can be completely arranged outside the winding rod 1, or the heating device 4 can also be completely arranged inside the winding rod 1, or the heating device 4 can also be partially arranged outside the winding rod 1 and the remaining part arranged inside the winding rod 1. Therefore, the heating device 4 can be flexibly arranged and can be designed in various ways.

[0064] In addition, the heating device 4 can also be heated by at least one of liquid channel heating, electric heating, light wave heating, hot air heating, and microwave heating. The heating device 4 is easy to set up and implement, and has good heating effect.

[0065] For example, the liquid channel heating is built in the winding rod 1, such as a liquid channel is arranged in the winding rod 1, and high-temperature liquid is circulated to heat the winding rod 1, and the winding rod 1 further heats the pulp molding cylinder blank 40 sleeved outside.

[0066] For example, the electric heating can be built in the winding rod 1 to transfer heat to the pulp molding cylinder blank 40 through the winding rod 1, and the electric heating can also be externally arranged on the winding rod 1 to transfer heat to the pulp molding cylinder blank 40 through heat radiation. For example, the electric heating can be an electric heating tube, an electric heating wire, or an electric heating sheet, etc.

[0067] For example, the light wave heating, the hot air heating, and the microwave heating can all be externally arranged on the winding rod 1, thereby simplifying the design of the winding rod 1.

[0068] For example, the heating device 4 is an electric heating tube built in the winding rod 1, so that the heating device 4 can more concentratedly transfer heat to the pulp molding cylinder blank 40, and the heating efficiency is high. For example, the length direction of the electric heating tube can extend along the length direction of the winding rod 1, or the electric heating tube can extend along a spiral line around the central axis of the winding rod 1, so that the pulp molding cylinder blank 40 can be heated in a larger length range, thereby improving the heating efficiency. For example, a mounting hole can be arranged on the end face of one end of the winding rod 1, and the electric heating tube is installed in the winding rod 1 through the mounting hole, thereby facilitating the installation of the electric heating tube.

[0069] As shown in FIG. 10, the cutting device 5 is arranged outside one end of the winding rod 1, and is located on the side of the second rod section 12 away from the first rod section 11. For example, when the part of the pulp molding cylinder blank 40 having the thread structure 31 is separated from the winding rod 1, and the length of the cutting knife of the cutting device 5 exceeds the required length, the cutting knife of the cutting device 5 cuts the pulp molding cylinder blank 40 to obtain a section of the pulp molding cylinder blank 40 having the thread structure 31 and meeting the length requirement, and this section of the pulp molding cylinder blank 40 can be used as the pulp molding thread cylinder 30. Thus, by arranging the cutting device 5 to automatically cut the pulp molding cylinder blank 40 having the thread structure 31, the pulp molding thread cylinder 30 meeting the length requirement is obtained, thereby improving the production efficiency.

[0070] For example, the cutting device 5 can include only one cutter, and one paper pulp molded barrel blank 40 can be continuously cut by the one cutter to obtain one paper pulp molded threaded barrel 30 each time, and a plurality of paper pulp molded threaded barrels 30 can be continuously obtained by continuous cutting. For another example, the cutting device 5 can include a plurality of cutters, and the plurality of cutters can be arranged in parallel to simultaneously cut a plurality of paper pulp molded threaded barrels 30.

[0071] Hereinafter, an embodiment of the manufacturing method of the paper pulp molded threaded barrel 30 of the present application will be described with reference to the accompanying drawings.

[0072] The embodiment of the manufacturing method of the present application is used to manufacture the paper pulp molded threaded barrel 30 according to any embodiment of the present application, and the manufacturing equipment 300 of the present application is adopted.

[0073] The manufacturing method includes the steps of: manufacturing the paper pulp molded barrel blank 40 by using the paper tube machine, so that the paper pulp molded barrel blank 40 is sleeved on the winding rod 1 and moves along the direction from the first rod section 11 to the second rod section 12 and rotates around the axis of the winding rod 1; humidifying the part of the paper pulp molded barrel blank 40 sleeved on the first rod section 11 by using the humidifying device 3; controlling the relative rotation of the rolling screw 2 and the winding rod 1 in the opposite direction to the rotation direction of the winding rod 1, so that the thread structure 31 is rolled on the paper pulp molded barrel blank 40; heating the part of the paper pulp molded barrel blank 40 on which the thread structure 31 is rolled by using the heating device 4; and cutting the part of the paper pulp molded barrel blank 40 moved out of the winding rod 1 along the direction from the first rod section 11 to the second rod section 12 by using the cutting device 5, to obtain the paper pulp molded threaded barrel 30.

[0074] In the embodiment, since the rolling screw 2 and the winding rod 1 rotate in the opposite direction, the thread groove 311 is machined on the outer circumferential surface of the paper pulp molded barrel blank 40 sleeved on the winding rod 1 by the cooperation of the helical groove 121 of the winding rod 1 and the helical rib 21 of the rolling screw 2, and the inner circumferential surface of the paper pulp molded barrel blank 40 is formed with the thread rib 312 corresponding to the thread groove 311, to obtain the paper pulp molded threaded barrel 30 with the thread structure 31.

[0075] The paper pulp molding cylinder blank 40 manufactured by the paper tube machine can move along the axial direction of the winding rod 1 from the first rod section 11 to the second rod section 12 and rotate around the axis of the winding rod 1. When the paper pulp molding cylinder blank 40 moves out of the first rod section 11, the portion of the paper pulp molding cylinder blank 40 sleeved outside the first rod section 11 is pre-humidified by the humidifying device 3. Then, when the paper pulp molding cylinder blank 40 moves out of the second rod section 12, the portion of the paper pulp molding cylinder blank 40 sleeved outside the second rod section 12 is processed into the threaded structure 31 by the cooperation of the helical protrusions 21 and the helical grooves 121. The portion of the paper pulp molding cylinder blank 40 with the threaded structure 31 continues to move away from the first rod section 11. When the portion with the threaded structure 31 moves away from the rolling screw rod 2 and reaches the heating area covered by the heating device 4, the portion can be heated and dried by the heating device 4.

[0076] Therefore, before the threaded structure 31 is processed on the paper pulp molding cylinder blank 40, the pre-humidification is beneficial to achieving corresponding processing effects by the selection of the humidifying material, such as making the processing of the threaded structure 31 easier, making the processed threaded structure 31 more stable, or making the processed paper pulp molding threaded cylinder 30 have other functions (such as waterproof and oil-proof functions), or simultaneously achieving at least two of the above functions. Then, after the threaded structure 31 is processed, the heating device 4 is used for heating, so that the paper pulp molding threaded cylinder 30 with stable structure can be efficiently obtained, and the manufacturing efficiency of the paper pulp molding threaded cylinder 30 is improved.

[0077] In some embodiments, the humidifying device 3 sprays latex resin or an additive on the paper pulp molding cylinder blank 40, so that the processed paper pulp molding threaded cylinder 30 has good waterproof and oil-proof performance. For example, the additive can include functional additives and process additives. The functional additives are a kind of additives for the purpose of improving the final performance and quality of paper film products, such as fillers, sizing agents, reinforcing agents, waterproof agents, oil-proof agents, whitening agents, etc. The process additives are a kind of additives for the purpose of promoting and improving the paper film forming process, preventing interference, and reducing raw material and energy consumption, such as release agents, retention aids, resin control agents, preservatives, etc.

[0078] When the portion of the paper pulp molding cylinder blank 40 with the threaded structure 31 moves away from the winding rod 1 and exceeds the length of the cutting knife of the cutting device 5 to the required length, the cutting knife of the cutting device 5 cuts the paper pulp molding cylinder blank 40 to obtain the paper pulp molding threaded cylinder 30 with the required length and the threaded structure 31. Therefore, by setting the cutting device 5 to automatically cut the paper pulp molding cylinder blank 40 with the threaded structure 31, the paper pulp molding threaded cylinder 30 with the required length is obtained, so that the production efficiency can be improved.

[0079] In the following, an embodiment of the manufacturing method of the container cap assembly 100 of the present application is described as follows.

[0080] The manufacturing method of the container cap assembly 100 comprises the steps of: obtaining the container cap 10 by paper pulp molding; manufacturing the paper pulp molding threaded cylinder 30 according to the manufacturing method of the paper pulp molding threaded cylinder 30 of the present application; and loading the paper pulp molding threaded cylinder 30 into the container cap 10 and bonding the paper pulp molding threaded cylinder 30 on the inner circumferential surface of the container cap 10. The sequence of the steps of obtaining the container cap 10 and the steps of obtaining the paper pulp molding threaded cylinder 30 is not limited, and the steps can be performed simultaneously or sequentially. The container cap 10 obtained by paper pulp molding can have a cap body shape composed of an end wall 10a and a circumferential wall 10b and having one end open.

[0081] Therefore, the manufacturing method of the container cap assembly 100 according to the embodiment of the present application is simple and convenient, has no demolding difficulty, has high production efficiency, and the manufactured container cap assembly 100 has the advantages of green environmental protection. In addition, the container cap assembly 100 of the present application can be manufactured by the manufacturing method of the container cap assembly 100 of the present embodiment, which will not be described herein.

[0082] Next, an embodiment of the manufacturing method of the container assembly 200 of the present application is described as follows.

[0083] The manufacturing method of the container assembly 200 comprises the steps of: obtaining the container 20 by paper pulp molding; manufacturing the paper pulp molding threaded cylinder 30 according to the manufacturing method of the paper pulp molding threaded cylinder 30 of the present application; and loading the paper pulp molding threaded cylinder 30 onto the mouth ring 20a of the container 20 and bonding the paper pulp molding threaded cylinder 30 with the mouth ring 20a. The sequence of the steps of obtaining the container 20 and the steps of obtaining the paper pulp molding threaded cylinder 30 is not limited, and the steps can be performed simultaneously or sequentially.

[0084] Therefore, the manufacturing method of the container assembly 200 according to the embodiment of the present application is simple and convenient, has no demolding difficulty, has high production efficiency, and the manufactured container assembly 200 has the advantages of green environmental protection. In addition, the container assembly 200 of the present application can be manufactured by the manufacturing method of the container assembly 200 of the present embodiment, which will not be described herein.

[0085] Next, an embodiment of the manufacturing method of the paper pulp molding threaded cylinder 30 of the present application is described as follows.

[0086] The paper pulp molding cylinder blank 40 is manufactured by a paper tube machine, and the paper pulp molding cylinder blank 40 is loaded onto the winding rod 1 and rotates and moves along the axial direction of the winding rod 1. The winding rod 1 comprises 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, and a spiral groove 121 is formed on the outer circumferential surface of the second rod segment 12.

[0087] The part of the paper pulp molding cylinder blank 40 sleeved on the outer part of the first rod section 11 of the winding rod 1 is humidified by the humidifying device 3, the second rod section 12 is rotationally provided with the rolling screw rod 2, the rolling screw rod 2 cooperates with the second rod section 12 to roll and press the outer circumferential surface of the part of the paper pulp molding cylinder blank 40 sleeved on the outer part of the second rod section 12 of the winding rod 1 to roll and press out the screw groove 311, and correspondingly, the screw rib 312 corresponding to the screw groove 311 is formed on the inner circumferential surface of the part.

[0088] The part of the paper pulp molding cylinder blank 40 after being rolled and pressed by the rolling screw rod 2 is dried by the heating device 4, and the dried paper pulp molding cylinder blank 40 is cut by the cutting device 5 to obtain the paper pulp molding screw cylinder 30 meeting the length requirement.

[0089] The above only describes the embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pulp molded thread cone characterized in that, The paper pulp molded threaded cylinder is cylindrical and has two open ends in the axial direction, and a thread structure is wound on the paper pulp molded threaded cylinder in a helical line, and the outer circumferential surface of the paper pulp molded threaded cylinder is convex to the inner circumferential surface, and thread grooves and thread ribs are formed on the outer circumferential surface and the inner circumferential surface respectively, and the thread structure comprises the thread grooves on the outer circumferential surface and the thread ribs on the inner circumferential surface, and the paper pulp molded threaded cylinder is used to connect a container and a container cover into a whole.

2. A container closure assembly characterized by: The paper pulp molded threaded cylinder is cylindrical and has two open ends in the axial direction, and a thread structure is wound on the paper pulp molded threaded cylinder in a helical line, and the outer circumferential surface of the paper pulp molded threaded cylinder is convex to the inner circumferential surface, and thread grooves and thread ribs are formed on the outer circumferential surface and the inner circumferential surface respectively, and the thread structure comprises the thread grooves on the outer circumferential surface and the thread ribs on the inner circumferential surface, and the paper pulp molded threaded cylinder is used to connect a container and a container cover into a whole.

3. A container assembly characterized by, The paper pulp molded threaded cylinder is cylindrical and has two open ends in the axial direction, and a thread structure is wound on the paper pulp molded threaded cylinder in a helical line, and the outer circumferential surface of the paper pulp molded threaded cylinder is convex to the inner circumferential surface, and thread grooves and thread ribs are formed on the outer circumferential surface and the inner circumferential surface respectively, and the thread structure comprises the thread grooves on the outer circumferential surface and the thread ribs on the inner circumferential surface, and the paper pulp molded threaded cylinder is used to connect a container and a container cover into a whole.

4. An apparatus for manufacturing a pulp molded thread cone, characterized by comprising: The paper pulp molded threaded cylinder is cylindrical and has two open ends in the axial direction, and a thread structure is wound on the paper pulp molded threaded cylinder in a helical line, and the outer circumferential surface of the paper pulp molded threaded cylinder is convex to the inner circumferential surface, and thread grooves and thread ribs are formed on the outer circumferential surface and the inner circumferential surface respectively, and the thread structure comprises the thread grooves on the outer circumferential surface and the thread ribs on the inner circumferential surface, and the paper pulp molded threaded cylinder is used to connect a container and a container cover into a whole. The paper tube machine comprises a winding rod, and the winding rod comprises a first rod segment and a second rod segment arranged in sequence along the length direction of the winding rod, and the outer circumferential surface of the second rod segment is provided with a helical groove, and the paper pulp molded cylinder blank produced by the paper tube machine is sleeved on the outside of 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. The rolling screw is arranged in parallel with the second rod segment of the winding rod, and the outer circumferential surface of the rolling screw is provided with a helical rib, and the rolling screw rotates relative to the winding rod, and the rotating direction of the winding rod is opposite to that of the rolling screw, so that the thread structure is rolled on the paper pulp molded cylinder blank sleeved on the outside of the second rod segment through the cooperation of the helical rib of the rolling screw and the helical groove of the second rod segment of the winding rod. The humidifying device is arranged opposite to the first rod segment of the winding rod and is used to humidify the part of the paper pulp molded cylinder blank sleeved on the outside of the first rod segment. The heating device is arranged on the side of the rolling screw away from the first rod segment of the winding rod in the moving path of the paper pulp molded cylinder blank and is used to heat the part of the paper pulp molded cylinder blank having the thread structure. The cutting device is arranged on 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 to cut off the paper pulp molded cylinder blank having the thread structure to obtain the paper pulp molded threaded cylinder.

5. A paper-molded thread cone manufacturing apparatus according to claim 4, wherein The heating device is built in and / or built out of the winding rod.

6. An apparatus for manufacturing a molded pulp thread cone according to claim 4 or 5, characterized in that The heating device adopts at least one of liquid flow channel heating, electric heating, light wave heating, hot air heating and microwave heating.

7. A paper-molded thread cone manufacturing apparatus according to claim 6, wherein The heating device is an electric heating pipe built in the winding rod.

8. A method of manufacturing a pulp molded thread cone, characterized by, The manufacturing equipment of the paper pulp molded threaded cylinder comprises the following steps: The paper tube machine is used to manufacture a paper pulp molded cylinder blank, so that the paper pulp molded cylinder blank is sleeved on the winding rod and moves along the direction from the first rod section to the second rod section, and rotates around the axis of the winding rod; The humidifying device is used to humidify the part of the paper pulp molded cylinder blank sleeved on the first rod section; The rolling screw is controlled to rotate reversely to the rotating direction of the winding rod, so that the screw thread structure is rolled on the paper pulp molded cylinder blank; The heating device is used to heat the part of the paper pulp molded cylinder blank on which the screw thread structure is rolled; The cutting device is used to cut the part of the paper pulp molded cylinder blank moved out of the winding rod along the direction from the first rod section to the second rod section, so as to obtain the paper pulp molded screw thread cylinder.

9. A method of manufacturing a container closure assembly, characterised by, The container cap assembly comprises a container cap and a paper pulp molded screw thread cylinder, and a manufacturing method of the container cap assembly comprises the following steps: The container cap is obtained by paper pulp molding; The paper pulp molded screw thread cylinder is manufactured by the manufacturing method of the paper pulp molded screw thread cylinder according to claim 8; The paper pulp molded screw thread cylinder is sleeved on the container cap and is bonded to the inner circumferential surface of the container cap.

10. A method of manufacturing a container assembly, characterized by, The container assembly comprises a container and a paper pulp molded screw thread cylinder, and a manufacturing method of the container assembly comprises the following steps: The container is obtained by paper pulp molding; The paper pulp molded screw thread cylinder is manufactured by the manufacturing method of the paper pulp molded screw thread cylinder according to claim 8; The paper pulp molded screw thread cylinder is sleeved on the mouth ring of the container and is bonded to the mouth ring. The container assembly comprises a container and a paper pulp molded screw thread cylinder, and a manufacturing method of the container assembly comprises the following steps: The container is obtained by paper pulp molding; The paper pulp molded screw thread cylinder is manufactured by the manufacturing method of the paper pulp molded screw thread cylinder according to claim 8; The paper pulp molded screw thread cylinder is sleeved on the mouth ring of the container and is bonded to the mouth ring.

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