System for producing composite paper can and composite paper can

Abstract

The invention discloses a system for producing a composite paper can and the composite paper can, and belongs to the technical field of food packaging. The system for producing the composite paper can comprises a cleaning module, a gluing module, a first composite module, a winding module, a damp-proof layer processing module, a second composite module and a cutting module which are arranged in sequence. The supporting layer sequentially passes through the cleaning module and the gluing module and is compounded with the blocking layer in the first compounding module to form a composite material layer, the composite material layer passes through the winding module to form a barrel, then a damp-proof layer is formed on the inner wall of the barrel through the damp-proof layer processing module, and then a printing layer is compounded through the second compounding module to form the paper tube. The paper tubes are cut by the cutting module and then output to the primary tank. Wherein the cleaning module, the gluing module, the first compounding module and the winding module form a first production line, and the second compounding module and the cutting module form a second production line; the first production line and the second production line are approximately parallel, so that a transition area is formed between the first production line and the second production line. By arranging the first production line and the second production line which are approximately parallel, other structures needing to be additionally arranged can be arranged in the transition area, and later plant upgrading and artificial aisle reserving are facilitated.

Description

Technical Field

[0001] The present application relates to a system for producing composite paper cans and composite paper cans, belonging to the technical field of food packaging. Background Art

[0002] A composite paper can is a packaging container made by compounding paper with other materials, mainly used for food packaging. A composite paper can usually consists of four layers, which are, from the inside out, a moisture-proof layer, a barrier layer, a support layer, and a printing layer. Among them, the moisture-proof layer uses polyethylene or polypropylene film for moisture-proof and sealing of food; the barrier layer uses aluminum foil or aluminized film for blocking oxygen and light; the support layer uses kraft paper or white cardboard for enhancing the structural strength of the composite paper can; the printing layer uses various papers with patterns printed on the surface.

[0003] Due to the rapid development of the food industry, the demand for the quantity of composite paper cans is extremely large. And during the production process of composite paper cans, adjacent layers need to be bonded by applying glue. However, solvent-based glue will emit VOC during the curing process. The applicant has proposed a technical solution that uses rice paste adhesive instead of solvent-based glue to reduce pollution while reducing the production raw material cost. Correspondingly, a system for producing composite paper cans needs to be provided. Summary of the Invention

[0004] The first object of the present application is to provide a system for producing composite paper cans, aiming to solve the problem of large pollution during the production process of composite paper cans in the prior art, and at the same time, being able to make good use of the production area space.

[0005] The technical problems to be solved by the present application are achieved by adopting the following technical solutions: A system for producing composite paper cans, comprising a gluing module for coating an adhesive on one side of the support layer; a first composite module for compounding the barrier layer and the side of the support layer covered with the adhesive, and drying the adhesive between the barrier layer and the support layer so that the barrier layer and the support layer are compounded to form a composite material layer; a winding module for winding and shaping the composite material layer and cutting it to form a cylinder; a moisture-proof layer processing module for processing a flowing moisture-proof material inside the cylinder and drying it to form a moisture-proof layer; a second composite module for covering a printing layer on the outer surface of the cylinder to form a paper tube; and a cutting module for cutting the paper tube to form a preliminary can body; The sizing module, the first composite module, and the winding module are arranged in sequence to form a first production line. The second composite module and the cutting module are arranged in sequence to form a second production line. The first production line and the second production line are approximately parallel. The moisture-proof layer processing module is located between the winding module and the second composite module.

[0006] Through the foregoing technical solution, using rice paste adhesive as the adhesive can achieve the environmental protection effect and reduce the raw material cost of production. Replacing the polyethylene or polypropylene film in the prior art with an environmentally friendly moisture-proof material can improve the degradability of the composite paper cans after use and further enhance the environmental protection effect.

[0007] In addition, setting the entire system as the approximately parallel first production line and second production line can make the equipment of the entire system more compact, making the floor area of the entire system approximately rectangular, thereby improving the space utilization rate. And the space between the first production line and the second production line can be used as a spare space for other equipment or for the convenience of operators to maintain and repair the equipment.

[0008] As an alternative solution for a system for producing composite paper cans, the system further includes a cleaning module for cleaning the particulate matter on the surface of the support layer.

[0009] As an alternative solution for a system for producing composite paper cans, a clamping assembly is provided between the first production line and the second production line. The clamping assembly is used to transport the cylinder body cut in the winding module to the moisture-proof layer processing module for processing the moisture-proof material.

[0010] As an alternative solution for a system for producing composite paper cans, the moisture-proof layer processing module includes a feeding part for covering the inner wall of the cylinder body with the moisture-proof material; and a drying part for drying the moisture-proof material and forming a moisture-proof layer; The drying part is located on the second production line and is connected to the second composite module. One end of the feeding part is close to the winding module, and the other end is close to the drying part.

[0011] As an alternative solution for a system for producing composite paper cans, the feeding part includes a mounting rack, a receiving groove provided on one side of the mounting rack for receiving the moisture-proof material in a flowing state; an output pipe fixed to the mounting rack, with one end closed and the other end communicating with the receiving groove, and the side wall of the output pipe capable of outputting the moisture-proof material; and a positioning member sleeved outside the output pipe and rotatably connected to the mounting rack for clamping the outer wall of one end of the cylinder body; A driving member for driving the clamping assembly to drive the cylinder to rotate around an axis is provided on the clamping assembly; The clamping assembly clamps the outer wall of one end of the cylinder and inserts the cylinder from the end of the output pipe away from the mounting bracket until the other end of the cylinder abuts against the positioning member. The positioning member and the clamping assembly cooperate to clamp the cylinder, and the cylinder can rotate around the output pipe under the drive of the driving member, so that the moisture-proof material output by the output pipe covers the inner wall of the cylinder.

[0012] As an alternative of a system for producing composite paper cans, the moisture-proof material is in a solution state; After one end of the cylinder is fixed to the positioning member, the axis of the output pipe coincides with the axis of the cylinder. A plurality of spray heads are provided on the wall of the output pipe, and the plurality of spray heads are arranged along the axial direction of the output pipe.

[0013] As an alternative of a system for producing composite paper cans, the moisture-proof material is in a semi-liquid state; A plurality of glue outlet holes are formed in the outer wall of the output pipe and are arranged along the axial direction thereof. A coating film is fixed at a position below the glue outlet holes on the outer wall of the output pipe. The coating film is arranged adjacent to the glue outlet holes and extends along the entire length of the output pipe in the axial direction; After one end of the cylinder is fixed to the positioning member, the side of the coating film away from the output pipe abuts against the inner wall of the cylinder.

[0014] As an alternative of a system for producing composite paper cans, the drying part includes A box body for reducing heat dissipation; A conveying mechanism for conveying the cylinder; A heating mechanism arranged inside the box body and above the conveying mechanism; and / or A centrifugal mechanism for clamping the outer walls of both ends of the cylinder and rotating it around an axis.

[0015] As an alternative of a system for producing composite paper cans, the centrifugal mechanism includes Two rotating disks, respectively located on both sides of the conveying mechanism, and the rotating disks are connected with a driving member for driving them to rotate; and Jaws, arranged on the side where the rotating disks are close to each other, and the jaws on the two rotating disks are telescopically connected to the corresponding rotating disks; At least one jaw is arranged circumferentially around the rotating disk, and a driving member for driving the jaw to rotate is arranged on one of the rotating disks; In the initial state position, the jaws are located outside the conveying mechanism. When a corresponding pair extends and sleeved on the outer walls of both ends of the cylinder, one of the jaws drives the cylinder to rotate and generates a centrifugal force.

[0016] The second object of the present invention is to provide a composite paper can, which can improve the recyclability after use, thereby enhancing the environmental protection performance of the composite paper can.

[0017] To achieve this purpose, the present invention adopts the following technical solutions: A composite paper can, prepared by the system for producing a composite paper can according to any one of claims 1-9, includes a moisture-proof layer, a barrier layer, a support layer, and a printing layer sequentially provided from the inside to the outside.

[0018] The beneficial effects of this application: The present invention provides a system for producing a composite paper can, which sets a first production line and a second production line that are approximately parallel. Other structures that need to be added can be set at the position between the first production line and the second production line, which is convenient for the later upgrade of the factory building and the reservation of the artificial aisle. The clamping assembly is arranged between the first production line and the second production line. There is enough space to realize the operation of the clamping assembly, and the clamping assembly can also be relatively isolated from the equipment of the first production line and the second production line, that is, the clamping assembly is relatively independent, thereby reducing the impact of the maintenance problem of the clamping assembly on the overall operation of the production line, and the whole can be replaced and the local replacement can be carried out quickly for operation.

[0019] Cleaning the surface of the support layer before the gluing module can increase the adhesion between the adhesive and the support layer and improve the flatness between the support layer and the barrier layer at the same time.

[0020] The moisture-proof layer processing module is arranged after the winding module, and an environmentally friendly moisture-proof material is selected, such as rice paste adhesive, ethanol solution of beeswax, etc. or other commercially available environmentally friendly fluid moisture-proof materials. The fluid moisture-proof material forms a moisture-proof layer after drying, which not only realizes environmental protection but also improves the tightness of food preservation because the moisture-proof layer is a structure directly in contact with food.

[0021] The processing of the moisture-proof layer can be selected according to the fluidity of the moisture-proof material. If it is a solution-type moisture-proof material, it is sprayed to evenly cover the inner wall of the cylinder and then transported to the drying part for drying; if it is a semi-liquid, that is, a coating-type moisture-proof material, it is applied to the inner wall of the cylinder with a flexible coating film, and then a centrifugal mechanism is used to make the moisture-proof material evenly cover the inner wall of the cylinder, and at the same time, low-temperature drying is carried out to avoid the moisture-proof material being dried into a solid state before centrifugal uniformity. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the embodiment of this application; Figure 2 is the structural schematic diagram of the glue scraping structure; Figure 3 is Figure 1 the structural schematic diagram of the clamping assembly in Figure 4 It is a schematic structural diagram of the feeding part in the moisture-proof layer processing module; Figure 5 It is Figure 4 the A-A sectional view of; Figure 6 It is Figure 5 the partially enlarged schematic structural diagram of; Figure 7 It is a schematic structural diagram of the drying part in the moisture-proof layer processing module; Figure 8 It is Figure 7 the B-B sectional view of.

[0023] In the figure: 1. Support layer; 2. Cylinder; 3. First production line; 4. Second production line; 5. Transition area; 100. Cleaning module; 200. Gluing module; 210. Glue scraping structure; 211. Rigid scraping blade; 212. Adjusting part; 300. First composite module; 400. Winding module; 410. Clamping assembly; 411. Track; 412. Foldable robotic arm; 413. Mechanical claw; 4131. Clip; 500. Moisture-proof layer processing module; 510. Feeding part; 511. Mounting frame; 5111. Bearing; 5112. Partition board; 512. Receiving groove; 513. Output pipe; 5131. Spraying head; 5132. Glue outlet hole; 5133. Coating film; 514. Positioning part; 5141. First fixing plate; 5142. First moving plate; 5143. Second fixing plate; 5144. Second moving plate; 520. Drying part; 521. Box body; 5211. First part; 5212. Second part; 522. Conveying mechanism; 523. Heating mechanism; 524. Centrifugal mechanism; 5241. Rotating disk; 5242. Claw; 5213. Exhaust pipe; 600. Second composite module; 700. Cutting module; 800. Bottom sealing module; 900. Case sealing module. Detailed implementation manners

[0024] In order to facilitate the understanding of the technical means, creative features, achieved purposes and effects of the present application, the present application will be further described below with reference to specific drawings.

[0025] As Figure 1As shown in the figure, the present application provides a system for producing composite paper cans, including a cleaning module 100, a gluing module 200, a first composite module 300, a winding module 400, a moisture-proof layer processing module 500, a second composite module 600, and a cutting module 700 arranged in sequence. The support layer 1 passes through the cleaning module 100 and the gluing module 200 in sequence, and is laminated with the barrier layer in the first composite module 300 to form a composite material layer. After passing through the winding module 400, the composite material layer then passes through the moisture-proof layer processing module 500, and then passes through the second composite module 600 to laminate the printing layer. Finally, it is processed by the cutting module 700 to output a preliminary can body. Among them, the cleaning module 100, the gluing module 200, the first composite module 300, and the winding module 400 form a first production line 3, and the second composite module 600 and the cutting module 700 form a second production line 4; the first production line 3 and the second production line 4 are approximately parallel, so that a transition area 5 is formed between the first production line 3 and the second production line 4.

[0026] Optionally, in order to broaden the production line, a bottom-sealing module 800 is arranged after the cutting module 700 for bottom-sealing one end of the preliminary can body. Optionally, in order to further broaden the production line, a packaging module is arranged after the bottom-sealing module 800 for boxing the preliminary can body after bottom-sealing, which is convenient for sale. A lid-covering module (not shown in the figure) can also be arranged before the bottom-sealing module 800 and the boxing module 900 for covering the other end of the opening on the preliminary can body, which is convenient for the overall sale after subsequent boxing.

[0027] Among them, the cleaning module 100 can adopt an ultrasonic dust removal device or other devices capable of removing particulate matter on the surface of the support layer 1, so that the surface of the support layer 1 is clean. Optionally, the support layer 1 is made of kraft paper, white cardboard or other paper or recycled paper.

[0028] The gluing module 200 can adopt a gluing machine or other gluing devices for coating an adhesive on one side of the cleaned support layer 1. The adhesive is selected from rice paste adhesive or other environmentally friendly adhesives. Optionally, if the adhesive is selected as rice paste adhesive, a scraping structure 210 is arranged after the gluing module 200 for controlling the thickness of the rice paste adhesive on the surface of the support layer 1. As Figure 2 shown, the scraping structure 210 includes a rigid scraping blade 211 and an adjusting member 212. The adjusting member 212 can control the rotation of the rigid scraping blade 211 and lock the position, so as to adjust the distance between the rigid scraping blade 211 and the surface of the support layer 1. The rigid scraping blade 211 is arranged corresponding to one of the transmission rollers. At this time, the support layer 1 is in a taut state, so as to better scrape off the excess adhesive on the surface of the support layer 1. Optionally, an adhesive recovery structure is arranged on or near the rigid scraping blade 211, which is convenient for quickly removing and recovering the adhesive on the rigid scraping blade 211 to prevent the adhesive from solidifying on the rigid scraping blade 211 and affecting the operation.

[0029] The first composite module 300 uses a hot-pressing composite device to composite the support layer 1 and the barrier layer, curing the adhesive between the support layer 1 and the barrier layer, so that the barrier layer and the support layer 1 are composited to form a composite material layer. Optionally, the barrier layer is an aluminum foil or aluminized film or other barrier material. Optionally, during the hot-pressing process, the hot-pressing composite device uses an air extraction pump to extract the high-temperature water vapor to accelerate the curing of the adhesive, and passes the aforementioned water vapor into the adhesive to keep the adhesive warm or preheat it.

[0030] The winding module 400 can use a spiral winding machine or other winding machine to wind the composite material layer while pushing the wound part away from the spiral winding machine, and cutting and separating the wound part through a retractable blade to form the cylinder body 2.

[0031] Optionally, combined Figure 1 and Figure 3 , the formed cylinder body 2 is transported by the clamping assembly 410, and before the blade cuts the wound composite material layer, the clamping assembly 410 has clamped one end of the wound composite material layer.

[0032] Optionally, the clamping assembly 410 includes a running track 411, a foldable robotic arm 412 and a robotic claw 413. The running track 411 is located in the transition area 5 between the first production line 3 and the second production line 4, which is convenient for separate maintenance and debugging. The shape and height of each position of the running track 411 are adaptively adjusted according to the transportation requirements. The foldable robotic arm 412 can move along the running track 411 and can extend or shorten to meet different length requirements. The robotic claw 413 is connected to the foldable robotic arm 412, and a driving member for driving the robotic claw 413 to rotate is arranged on the foldable robotic arm 412. The driving member can be selected as a motor or other structures that drive rotation, so that the cylinder body 2 clamped by the robotic claw 413 can rotate around the axis. The robotic claw 413 includes at least two clip pieces 4131 that can approach or move away from each other and lock their relative positions, which is convenient for stably clamping the outer wall of the cylinder body 2.

[0033] The moisture-proof layer processing module 500 includes a feeding part 510 and a drying part 520. The cylinder body 2 is transported to the feeding part 510 and the moisture-proof material is covered on the inner wall of the cylinder body 2, and then the moisture-proof material on the inner wall of the cylinder body 2 is dried through the drying part 520. One end of the feeding part 510 is close to the winding module 400, and the other end is close to the drying module, so that it is located in the transition space between the first production line 3 and the second production line 4; the drying part 520 is located on the second production line 4 and is connected to the second composite module 600.

[0034] Such as Figure 4As shown in the figure, the feeding part 510 includes a mounting frame 511, a receiving groove 512, an output pipe 13, and a positioning member 514. The mounting frame 511 is installed on the factory floor to make it vertical. The receiving groove 512 is arranged on one side of the mounting frame 511 and is used to receive the moisture-proof material in a flowing state. Optionally, the top of the receiving groove 512 is closed (not shown in the figure) and the internal capacity can be observed through an observation window.

[0035] Combined with Figure 4 and Figure 5 , optionally, the output pipe 13 passes through the mounting frame 511 horizontally and is fixed to the mounting frame 511. One end of the output pipe 13 communicates with the receiving groove 512, and the other end is closed. The moisture-proof material in the receiving groove 512 is input into the output pipe 13 through a hydraulic structure such as a hydraulic pump, and the moisture-proof material is output through the side wall of the output pipe 13. Optionally, the moisture-proof material output by the output pipe 13 can be quantitatively controlled by an MFC, and the specific output amount is determined according to actual needs.

[0036] Combined with Figure 5 and Figure 6 , the cylinder 2 is transported and inserted outside the output pipe 13 by a mechanical claw 413 (see Figure 3 ), so that the outer wall of the other end of the cylinder 2 is clamped by the positioning member 514, and then the cylinder 2 is driven to rotate around the axis by the mechanical claw 413, so that the moisture-proof material output from the side wall of the output pipe 13 covers the inner wall of the cylinder 2.

[0037] In an embodiment, the moisture-proof material is in a solution state, and the output pipe 13 covers the inner wall of the cylinder 2 by spraying. When one end of the cylinder 2 is fixed to the positioning member 514, the axis of the output pipe 13 coincides with the axis of the cylinder 2. The pipe wall of the output pipe 13 is provided with a plurality of spray heads 5131, and the spray heads 5131 are evenly arranged along the axial direction of the output pipe 13. Optionally, a plurality of spray heads 5131 are evenly arranged around the circumference of the output pipe 13.

[0038] Correspondingly, the positioning member 514 is rotatably connected to the mounting bracket 511 through a bearing 5111, and the output pipe 13 passes through the bearing 5111 and the positioning member 514, so that the positioning member 514 is sleeved outside the output pipe 13. The positioning member 514 can be sleeved on the outer wall of one end of the cylinder 2 and rotate synchronously under the drive of the cylinder 2. Optionally, the positioning member 514 includes a first fixing plate 5141 and a first moving plate 5142, and both the first fixing plate 5141 and the first moving plate 5142 are arc-shaped. The first moving plate 5142 moves away from or approaches the first fixing plate 5141 through a telescopic driving member, so as to better clamp the cylinder 2 between the first positioning plate and the first moving plate 5142. Optionally, the first fixing plate 5141 and the first moving plate 5142 are symmetrically arranged. For example, the first fixing plate 5141 is located at the upper and lower positions, or the left and right positions, or other symmetrical positions of the output pipe 13.

[0039] In another embodiment, the moisture-proof material is semi-liquid, and the output pipe 13 covers the inner wall of the cylinder 2 by means of scraping. A plurality of glue outlet holes 5132 are arranged on the outer wall of the output pipe 13 along its axial direction, and a flexible coating film 5133 is fixed at a position below the glue outlet holes 5132 on the outer wall of the output pipe 13. The coating film 5133 is arc-shaped and arched upward. The coating film 5133 is arranged adjacent to the glue outlet holes 5132 and extends along the entire length of the output pipe 13 in the axial direction. Optionally, the glue outlet holes 5132 are close to the lower part of the output pipe 13.

[0040] Correspondingly, the positioning member 514 is rotatably connected to the mounting bracket 511 through a bearing 5111, and the output pipe 13 passes through the bearing 5111 and the positioning member 514, so that the positioning member 514 is sleeved outside the output pipe 13. The positioning member 514 can be sleeved on the outer wall of one end of the cylinder 2 and rotate synchronously under the drive of the cylinder 2. When the positioning member 514 is sleeved outside the cylinder 2 and clamps the cylinder 2, the side of the coating film 5133 away from the output pipe 13 abuts against the inner wall of the cylinder 2. At this time, the cylinder 2 is driven to rotate clockwise, so that the moisture-proof material on the upper surface of the coating film 5133 is smeared on the inner wall of the cylinder 2.

[0041] Optionally, the positioning member 514 includes a second fixing plate 5143 and a second moving plate 5144 respectively located above and below the output pipe 13, and both the second fixing plate 5143 and the second moving plate 5144 are arc-shaped. The second moving plate 5144 moves away from or approaches the second fixing plate 5143 through a telescopic driving member, so as to better clamp the cylinder 2 between the positioning plate and the moving plate. When the cylinder 2 is clamped between the second fixing plate 5143 and the second moving plate 5144, the cylinder 2 and the output pipe 13 are eccentric, that is, the axes of the cylinder 2 and the output pipe 13 are parallel and do not coincide.

[0042] Optionally, when using moisture-proof materials in both solution state and semi-liquid state, the corresponding output pipes 13 are arranged staggeredly along the height direction of the mounting bracket 511, so as to prevent the dripping moisture-proof materials from interfering with each other. Optionally, a partition plate 5112 can be provided below the output pipe 13 at a higher position, and the shelving plate is fixed to the mounting bracket 511. The partition plate 5112 is inclined, and the inclination direction is away from the lower output pipe 13 from top to bottom.

[0043] As Figure 7 and 8 shown, the drying part 520 includes a box body 521, a conveying mechanism 522 and a heating mechanism 523. After the moisture-proof material covers the inner wall of the cylinder body 2, the cylinder body 2 is transported to the conveying mechanism 522 by the mechanical claw 413, and then conveyed by the conveying mechanism 522 to the heating mechanism 523 for drying, so that the moisture-proof material is cured and output.

[0044] Optionally, the box body 521 is divided into a first part 5211 and a second part 5212 from top to bottom. The first part 5211 or the second part 5212 is used to process the cylinder body 2 with semi-liquid moisture-proof material, and the other part processes the cylinder body 2 with moisture-proof material in solution state.

[0045] Taking the first part 5211 as an example to process the cylinder body 2 with semi-liquid moisture-proof material, that is, the second part 5212 processes the cylinder body 2 with moisture-proof material in solution state.

[0046] Among them, two conveying mechanisms 522 and a centrifugal mechanism 524 are arranged inside the first part 5211. The centrifugal mechanism 524 is located between the two conveying mechanisms 522, and the conveying mechanism 522 can be a conveyor belt. The cylinder body 2 enters and exits the box body 521 through the conveying mechanism 522, and heat insulation is achieved through wind-proof curtains at the entrance and exit positions. The centrifugal mechanism 524 is used to rotate the cylinder body 2 to generate centrifugal force to make the moisture-proof material on the inner wall of the cylinder body 2 more uniform.

[0047] Optionally, the centrifugal mechanism 524 includes two rotating disks 5241 and clamping jaws 5242 arranged on the rotating disks 5241. The two rotating disks 5241 are respectively located on both sides of the conveying direction of the conveying mechanism 522, and a driving member for driving its rotation is connected to the rotating disk 5241, and the driving member can be a motor. Optionally, the two rotating disks 5241 can be driven to rotate by two driving members, or can be connected as a whole through a connecting member and driven to rotate synchronously by one driving member.

[0048] At least one gripper 5242 is circumferentially arranged on the corresponding rotating disk 5241 around the rotating disk 5241, and the grippers 5242 on the two rotating disks 5241 are arranged correspondingly, hereinafter referred to as a pair of grippers 5242. Each pair of grippers 5242 can approach or move away from each other. Specifically, there is a telescopic member between each gripper 5242 and the corresponding rotating disk 5241, and the telescopic member can be a cylinder. In the initial state, a pair of grippers 5242 are both located outside the conveying mechanism 522. When the grippers 5242 are driven by the rotating disk 5241, they move above the conveying mechanism 522, and a pair of grippers 5242 approach in an arc and respectively clamp both ends of the cylinder body 2. Optionally, a blocking cylinder for preventing the cylinder body 2 from falling between the two conveying mechanisms 522 is fixed on the rotating disk 5241, and the blocking cylinder is coaxially arranged with the rotating disk 5241.

[0049] Among a pair of grippers 5242, one of them is connected with a driving member for driving its own rotation, and the driving member can be a motor. After a pair of grippers 5242 clamp both ends of the cylinder body 2, the cylinder body 2 is driven to rotate under the drive of one of the grippers 5242, thereby generating a centrifugal force, making the moisture-proof material on the inner wall of the cylinder body 2 more uniform.

[0050] Optionally, the heating mechanism 523 is located at the top of the first part 5211 and performs low-temperature heating on the space of the first part 5211 to prevent the moisture-proof material from being dried into a solid state before being centrifugally homogenized.

[0051] Optionally, an exhaust pipe 5213 is arranged on one side of the first part 5211.

[0052] Correspondingly, a conveying mechanism 522 is arranged inside the second part 5212, and the cylinder body 2 enters and exits through the conveying mechanism 522. And the heating mechanism 523 is located at the top of the second part 5212. Optionally, an exhaust pipe 5213 is arranged on one side of the second part 5212.

[0053] The second composite module 600 can use a laminating machine or the like to laminate the cut printing layer to the outer wall of the cylinder body 2. The specific process is as follows: First, apply adhesive glue on one side of the printing layer, and then use a roller to convey it to the outer wall of the cylinder body 2 and rotate it for fitting.

[0054] The cutting module 700 realizes cutting through multiple groups of telescopic blades. Specifically, the cylinder body 2 with the printing layer laminated is driven to rotate around the axis by a rotating shaft, the blades extend and approach the cylinder body 2 until part of them enter the cylinder body 2, and it is divided into multiple preliminary cans during the rotation of the cylinder body 2. Specifically, the number of blades is selected according to the number of corresponding repeated picture intersection lines on the printing layer.

[0055] The composite paper can produced by the foregoing system includes a moisture-proof layer, a barrier layer, a support layer 1, and a printing layer sequentially arranged from the inside to the outside.

[0056] The foregoing has shown and described the basic principles, main features and advantages of the present application.

[0057] Those skilled in the art should understand that the present application is not limited by the above embodiments. Without departing from the spirit and scope of the present application, there will be various changes and improvements to the present application, and these changes and improvements all fall within the scope claimed by the present application. The scope claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A system for producing composite paper cans, characterized in that: including a gluing module (200) for coating an adhesive on one side of the support layer (1); a first composite module (300) for laminating the barrier layer and the side of the support layer (1) covered with the adhesive, and drying the adhesive between the barrier layer and the support layer (1) so that the barrier layer and the support layer (1) are laminated to form a composite material layer; a winding module (400) for winding and shaping the composite material layer and cutting it to form a cylinder (2); a moisture-proof layer processing module (500) for processing a flowing moisture-proof material inside the cylinder (2) and drying it to form a moisture-proof layer, and the moisture-proof material is an environment-friendly material; a second composite module (600) for covering a printing layer on the outer surface of the cylinder (2) to form a paper tube; and a cutting module (700) for cutting the paper tube to form a preliminary tank body; the gluing module (200), the first composite module (300) and the winding module (400) are arranged in sequence to form a first production line (3), the second composite module (600) and the cutting module (700) are arranged in sequence to form a second production line (4), and the first production line (3) and the second production line (4) are approximately parallel; the moisture-proof layer processing module (500) is located between the winding module (400) and the second composite module (600).

2. The system for producing composite paper cans according to claim 1, wherein: The system further includes a cleaning module (100) for cleaning the particulate matter on the surface of the support layer (1).

3. The system for producing composite paper cans according to claim 1 or 2, characterized in that: A clamping assembly (410) is arranged between the first production line (3) and the second production line (4), and the clamping assembly (410) is used to transport the cylinder (2) cut in the winding module (400) to the moisture-proof layer processing module (500) for processing the moisture-proof material.

4. The system for producing composite paper cans according to claim 3, wherein: The moisture-proof layer processing module (500) includes a feeding part (510) for covering the moisture-proof material on the inner wall of the cylinder (2); and a drying part (520) for drying the moisture-proof material and forming a moisture-proof layer; the drying part (520) is located on the second production line (4) and is connected to the second composite module (600); one end of the feeding part (510) is close to the winding module (400), and the other end is close to the drying part (520).

5. The system for producing composite paper cans according to claim 4, wherein: The feeding part (510) includes a mounting frame (511), a receiving groove (512) arranged on one side of the mounting frame (511) for receiving the flowing moisture-proof material; an output pipe (13) fixed to the mounting frame (511), with one end closed and the other end communicating with the receiving groove (512), and the side wall of the output pipe (13) can output the moisture-proof material; and a positioning member (514) sleeved outside the output pipe (13) and rotatably connected to the mounting frame (511) for clamping the outer wall of one end of the cylinder (2); A driving member for driving it to drive the cylinder (2) to rotate around the axis is arranged on the clamping assembly (410); The clamping assembly (410) clamps the outer wall of one end of the cylinder (2) and inserts the cylinder (2) from the end of the output pipe (13) away from the mounting bracket (511) until the other end of the cylinder (2) abuts against the positioning member (514). The positioning member (514) and the clamping assembly (410) cooperate to clamp the cylinder (2), and the cylinder (2) can rotate around the output pipe (13) under the drive of the driving member, so that the moisture-proof material output by the output pipe (13) covers the inner wall of the cylinder (2).

6. The system for producing composite paper cans according to claim 5, characterized in that: The moisture-proof material is in a solution state; After one end of the cylinder (2) is fixed to the positioning member (514), the axis of the output pipe (13) coincides with the axis of the cylinder (2). A plurality of spray heads (5131) are provided on the wall of the output pipe (13), and the plurality of spray heads (5131) are arranged along the axial direction of the output pipe (13).

7. The system for producing composite paper cans according to claim 5, characterized in that: The moisture-proof material is semi-liquid; A plurality of glue outlet holes (5132) are formed in the outer wall of the output pipe (13) and arranged along its axial direction. A flexible coating film (5133) is fixed at a position below the glue outlet holes (5132) on the outer wall of the output pipe (13). The coating film (5133) is arranged adjacent to the glue outlet holes (5132), and the coating film (5133) is arranged along the entire length of the output pipe (13) in the axial direction; After one end of the cylinder (2) is fixed to the positioning member (514), the side of the coating film (5133) away from the output pipe (13) abuts against the inner wall of the cylinder (2).

8. The system for producing composite paper cans according to claim 4 or 6, characterized in that: The drying part (520) includes a box body (521) for reducing heat dissipation; a conveying mechanism (522) for conveying the cylinder (2); a heating mechanism (523) arranged inside the box body (521) and above the conveying mechanism (522); and / or a centrifugal mechanism (524) for clamping the outer walls of both ends of the cylinder (2) and rotating it around its axis.

9. The system for producing composite paper cans according to claim 8, characterized in that: The centrifugal mechanism (524) includes two rotating disks (5241) respectively located on both sides of the conveying mechanism (522), and the rotating disks (5241) are connected with a driving member for driving their rotation; and claw jaws (5242) arranged on the side of the rotating disks (5241) close to each other, and the claw jaws (5242) on the two rotating disks (5241) are telescopically connected to the corresponding rotating disks (5241); At least one claw jaw (5242) is arranged circumferentially around the rotating disk (5241), and a driving member for driving the claw jaw (5242) to rotate is arranged on one of the rotating disks (5241); In the initial state position, the claw jaws (5242) are located outside the conveying mechanism (522). When a corresponding pair of them extends and sleeves on the outer walls of both ends of the cylinder (2), one of the claw jaws (5242) drives the cylinder (2) to rotate and generates centrifugal force.

10. A composite paper can, characterized in that: Prepared by the system for producing composite paper cans according to any one of claims 1-9, including a moisture-proof layer, a barrier layer, a support layer (1) and a printing layer arranged in sequence from the inside to the outside.

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