Package forming production line and package forming method
By integrating a blow-and-spray brush and a hinged connection design into the packaging forming production line, the problems of conveyor chain wear and inaccurate folding are solved, enabling online cleaning and lubrication and precise folding, thereby improving equipment efficiency and carton forming quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU VANTA PACKING MASCH CO LTD
- Filing Date
- 2026-02-11
- Publication Date
- 2026-05-01
AI Technical Summary
In existing packaging forming production lines, the conveyor chains are prone to accumulating dust and debris, leading to wear and unstable operation. The angle and timing control of the folding components are not precise, affecting the bonding strength and carton forming quality. Maintenance requires machine shutdown for cleaning, resulting in low efficiency.
The conveyor chain integrates a blower and oil sprayer, which has both air and oil spraying functions. Through the articulated connection and tension adjuster design, it achieves online cleaning and lubrication. The compact mechanical structure controls the folding angle of the carton, and the production line power triggers the pressing action. Synchronous glue application components and guide rollers form a curved guide rail to ensure precise folding and bonding.
Online maintenance of the conveyor chain has been achieved, which has improved equipment efficiency and carton forming quality, reduced maintenance downtime, and increased the first-pass yield and quality stability of packaging.
Smart Images
Figure CN121947879A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of product packaging technology, and in particular to a packaging forming production line and packaging forming method. Background Technology
[0002] Packaging forming production lines are widely used in the beverage and food industries to automatically pack products (such as bottled beer) into cartons and seal them. These production lines typically include a product feeding mechanism, a paper feeding mechanism, a folding packaging mechanism, a gluing mechanism, and a pressing mechanism. The core of the folding packaging mechanism lies in the coordination of conveying and folding actions to fold the flat cardboard box into a three-dimensional box shape and wrap the product.
[0003] However, existing packaging forming production lines still have several technical problems affecting production efficiency, packaging quality, and ease of equipment maintenance. For example, the transmission chain, as the core of the drive system, is exposed to the working environment for extended periods, making it prone to accumulating dust, paper scraps, and other debris. These impurities not only accelerate the wear of the chain and sprockets, shortening their service life, but can also cause the chain to jam, produce abnormal noises, and even affect the synchronization accuracy of the conveyor, leading to inaccurate positioning of cartons between workstations. Currently, cleaning the chain often requires a complete shutdown and manual disassembly and cleaning, a cumbersome process that severely disrupts continuous production and increases maintenance costs and time.
[0004] In existing technologies, the end folding components responsible for folding the front and rear flaps of a carton (such as the adhesive sections of the bottom and side flaps) often lack precise control over the angle and timing during the folding process. For example, if the adhesive tabs on the bottom and side flaps cannot form an accurate vertical overlap (i.e., a clear layering of the inner and outer sides) when the side flaps are closed, it can lead to misalignment, insufficient adhesive area, or wrinkles during subsequent pressing, thus affecting the adhesive strength and even causing the carton to be skewed or poorly sealed. Summary of the Invention
[0005] The purpose of this invention is to provide a packaging forming production line and a packaging forming method to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention provides a packaging forming production line, including a product feeding mechanism, a paper feeding mechanism, a paper folding and packaging mechanism, a gluing mechanism, and a pressing mechanism. The paper folding and packaging mechanism includes a transmission component for driving the carton and product to move during the packaging forming process. The transmission component includes: A continuously operating transmission chain; The folding assembly includes side folding assemblies located on both sides of the transmission chain, a first end folding assembly located on the transmission chain, and a second end folding assembly located opposite above the transmission chain, wherein one side folding assembly is further provided with a top page folding assembly; The cleaning and lubrication assembly includes a purge and oil spray brush positioned toward the transmission chain. The purge and oil spray brush has an air jet channel and an oil spray channel, which are respectively connected to an external air source and a lubricating oil tank. The purge and oil spray brush performs purge and oil spray lubrication actions on the transmission chain according to a preset cycle.
[0007] In this technical solution, the conveyor chain is responsible for carrying and driving cartons and products sequentially through various functional stations, achieving continuous assembly line operation. Side folding assemblies on both sides fold the left and right sides of the cartons; the first end folding assembly on the chain folds the front and rear bottom flaps of the cartons; and the second end folding assembly above the chain folds the front and rear top flaps of the cartons, thus achieving a comprehensive and progressive folding of the cartons during transport. The blowing and oiling brush is equipped with air jet channels and oil jet channels, respectively connecting to an external air source and a lubricating oil tank. This dual-function blowing and oiling brush aims to solve the problem of online chain maintenance. This technical solution integrates online cleaning and lubrication functions into the core conveyor components of the packaging production line, solving the problems of difficult chain maintenance and the need for maintenance shutdowns.
[0008] As a further improvement of the present invention: the purging and spraying brush is disposed on the return section of the transmission chain or near the driven wheel, and includes a connecting plate, a brush body and a tension adjuster. One end of the brush body is hinged to one end of the connecting plate, such that the bottom brush surface of the brush body abuts against the transmission chain. The tension adjuster includes a U-shaped plate and an adjusting shaft. The U-shaped opening of the U-shaped plate is inserted into the middle section of the connecting plate and fixed. The other end has a shaft hole facing the brush body. A nut is provided on the shaft hole. The adjusting shaft passes through the shaft hole and its end abuts against the top side of the brush body. The air jet channel and the oil jet channel are respectively arranged from the top side to the bottom side of the brush body and are arranged facing the transmission chain.
[0009] This improved design, through a hinged connection and independent tension adjuster, allows the brush body to adapt to minor chain fluctuations, vibrations, or wear-induced gap changes within a certain range. Rotating the adjusting shaft controls the brush's pressure on the chain, ensuring optimal and constant contact pressure. This prevents insufficient pressure leading to cleaning and lubrication failure, as well as excessive pressure causing premature brush wear or abnormally increased chain resistance. Integrating the air and oil channels directly within the brush body allows high-pressure gas and lubricating oil to act directly on the cleaning and lubrication points from the bottom of the brush, reducing airflow and oil wastage and splashing. When the brush wears out, only the brush body needs replacement without disassembling the entire device. The pressure can be quickly adjusted on-site by rotating the adjusting shaft with a simple tool, eliminating the need for complex mechanical disassembly and repositioning, thus reducing the technical difficulty and time cost of maintenance.
[0010] As a further improvement of the present invention: the first end folding assembly is equidistantly arranged on the transport chain, and the first end folding assembly includes two front folding members and two rear folding members disposed on both sides in the direction of travel of the transport chain, wherein the front folding members and / or the rear folding members include: The first hinge seat is connected to the inside of the conveyor chain via a hinge shaft, and includes a first push block for pushing the front and / or rear adhesive pages of the carton side pages. The second hinge seat is fixed to the side of the first hinge seat away from the conveyor chain. It includes a second push block. A carton bottom sheet placement area is provided between the second hinge seats of the front folding member and the rear folding member. The second push block is used to push the front pressing page and / or the rear pressing page of the carton bottom sheet.
[0011] This improved design provides a compact, interconnected mechanical structure that uses a single swinging component to simultaneously control the folding of two different sections (side and bottom) of the carton, simplifying the mechanism.
[0012] As a further improvement of the present invention: the first push block and the second push block form an acute angle; when the first push block is in the vertical state, the first push block abuts against the front end adhesive page and / or the rear end adhesive page of the carton side page, so that the front end adhesive page and / or the rear end adhesive page are folded relative to the carton side page into a first folding angle close to a right angle; the second push block abuts against the front end pressing page and / or the rear end pressing page of the carton bottom page, so that the front end pressing page and / or the rear end pressing page are folded relative to the carton bottom page into a second folding angle in an inclined state; the first folding angle is greater than the second folding angle so that when the carton side page is folded towards the carton bottom page under the action of the side folding assembly, the front end adhesive page and / or the rear end adhesive page are located on the inner side of the front end pressing page and / or the rear end pressing page, and after gluing, they are pressed onto the outer side of the front end pressing page and / or the rear end pressing page.
[0013] This improved solution uses a mechanical structure to pre-set precise folding angle differences, physically ensuring the correct spatial nesting relationship of the glued sheets. It solves the technical problems of misalignment and weak adhesion caused by improper folding sequence and angle, thus improving the first-pass yield of packaging.
[0014] As a further improvement of the present invention: the first hinge seat is provided with a lever arm, the distal end of which is a sliding abutment end. The pressing mechanism is provided with an abutment platform on the outside of the transmission chain. When the transmission chain runs to the pressing mechanism, the sliding abutment end slides against the abutment platform. The abutment surface of the abutment platform is inclined so that the lever arm starts to swing around the hinge axis during the movement. The first hinge seat and the first push block, the second hinge seat and the second push block swing around the hinge axis toward the carton. This swing causes the second push block to push the front end pressing page and / or the rear end pressing page of the bottom page of the carton to press against the front end adhesive page and / or the rear end adhesive page of the side page of the carton.
[0015] This improved solution utilizes the continuous motion of the production line itself as a power source. The final pressing action is triggered by the sliding contact end of the lever arm and the contact platform, eliminating the need for additional cylinders or motors, saving energy, simplifying control, and improving reliability. It achieves synchronization between the pressing action and the conveying process. The pressing force and duration are determined by the slope of the contact platform and the chain speed, ensuring stability and controllability.
[0016] As a further improvement of the present invention: the second end folding assembly includes a rotating chain located above the transmission chain and a front pressure plate and a rear pressure plate equidistantly suspended on the rotating chain. The rotating chain operates synchronously with the transmission chain, such that the front pressure plate and the rear pressure plate are respectively aligned with the front folding member and the rear folding member. The front pressure plate and the rear pressure plate are used to push the front end pressing page and / or the rear end pressing page of the carton top page, so that after gluing, the front end pressing page and / or the rear end pressing page of the carton top page are pressed onto the outside of the front end adhesive page and / or the rear end adhesive page of the carton side page.
[0017] In this improved design, a top-mounted rotary chain that operates synchronously with the main conveyor chain ensures the alignment of the top pressure plate with the bottom carton. The front and rear pressure plates are equidistantly mounted on the rotary chain, corresponding to the front and rear positions of the carton, respectively. These plates are used to push down on the front and rear pressing flaps of the top page after it has been guided into position and glued, thus adhering it to the side pages.
[0018] As a further improvement of the present invention: the side folding assembly includes a folding roller group arranged in a curved manner along the travel path of the conveyor chain; the folding roller group includes a first guide roller and a second guide roller located upstream of the travel path and a top page folding assembly located downstream, the top page folding assembly including a third guide roller; wherein, the first guide roller and the second guide roller are respectively located on both sides of the conveyor chain, and their extension direction gradually rises from the outside to the inside, so as to guide the side pages of the carton on both sides and their connected front end adhesive pages and rear end adhesive pages to stand upright; the third guide roller is located downstream of the second guide roller, and its extension direction gradually becomes horizontal from the outside to the inside, so as to guide the top page of the carton from the side to the top of the product.
[0019] This improved solution utilizes fixed curved guide rails to achieve folding, resulting in a simple, reliable, and maintenance-free structure with no complex drive components. It achieves a highly smooth and controllable folding process, protects the appearance quality of the carton, and is suitable for high-speed production.
[0020] As a further improvement of the present invention: the glue coating mechanism is disposed between the folding packaging mechanism and the pressing mechanism, and includes a first glue coating component and a second glue coating component; the nozzle of the first glue coating component is disposed facing the inner side of the front pressing page and / or the rear pressing page of the bottom page of the carton; the nozzle of the second glue coating component is disposed facing the inner side of the front pressing page and / or the rear pressing page of the top page of the carton.
[0021] This improved solution uses a first and a second glue application component to precisely apply glue to the inside of the press-fit hinge, reducing the amount of glue used and solving quality problems such as incomplete bonding and glue separation caused by improper glue application.
[0022] On the other hand, the present invention also provides a packaging forming method, which performs the following steps using a packaging forming production line of one or more alternative embodiments as described above: S01: Trigger the cleaning and lubrication process when the preset maintenance cycle is reached, when a fixed time point is reached, or according to the user's input request command; S02: When the production line is running normally and there is no need to stop or disassemble the machine, control the cleaning and lubrication component to start its cleaning function; high-pressure gas is continuously sprayed out from the jet channel and acts on the chain links, rollers and pins of the moving transmission chain to blow away the dust and paper scraps attached to them. S03: After purging is completed or during purging in between, control the purging oil spray brush to switch to lubrication function; lubricating oil is atomized and sprayed from the oil spray channel and evenly coated on the cleaned conveyor chain surface; S04: After the preset time of purging and lubrication is completed, the purging and oil spraying brush is turned off, and the cleaning and lubrication process ends; the transmission chain continues to drive the carton and product to operate normally in the cleaned and lubricated state for packaging operations.
[0023] This technical solution, by setting any of three triggering methods—periodic maintenance, scheduled maintenance, and manual request maintenance—takes into account planning, regularity, and flexibility, automating preventative maintenance, transforming unplanned downtime for cleaning into planned online maintenance, solving the problem of chain maintenance requiring downtime and production stoppage, and significantly improving the overall efficiency of the equipment.
[0024] In an optional embodiment, the following steps are also included: S1: The product feeding mechanism separates and transports the bottles according to a preset number of columns. At the same time, the paper feeding mechanism transports the unfolded carton to the bottom page placement area of the conveyor chain. When the bottom page of the carton just enters the bottom page placement area, it is at the end of the conveyor chain. At this time, the front folding part of the first end folding component has just rotated and circulated from the bottom surface to the top surface. The front end of the bottom page of the carton is abutted by the front folding part. As the conveyor chain continues to circulate, the bottom page of the carton follows. When all the bottom pages of the carton have entered the end of the conveyor chain, the rear folding part moves from the bottom surface to the top surface, thereby abutting the rear end of the bottom page of the carton. At this time, the separated bottle group is guided onto the bottom page of the carton located on the conveyor chain. S2: The first push block of the front folding member and / or the first push block of the rear folding member are in an upright state, so that the first push block folds the front end adhesive page and / or the rear end adhesive page of the carton side page to form a first folding angle close to a right angle, while the second push block folds the front end pressing page and / or the rear end pressing page of the carton bottom page to form an inclined second folding angle, and ensures that the first folding angle is greater than the second folding angle. S3: During the continued conveying process of the conveyor chain, the first and second guide rollers of the side folding assembly cause the carton side pages to close towards the carton bottom page. During this process, since the first folding angle is greater than the second folding angle, the front and / or rear adhesive pages on the side pages are naturally located on the opposite inner side of the front and / or rear pressing pages on the bottom page, forming a preliminary pressing and overlapping relationship. S4: As the conveyor chain continues to transport the product to the third leading roller, the top page of the carton is guided from the side to above the product, at which point the bottom, side, and top pages of the carton are closed. S5: During the continued conveying process of the conveyor chain, the top page of the carton enters the rotary chain and is pressed against the front end of the top page of the carton by the front pressure plate of the second end folding assembly, and the front pressing page is folded. As the conveyor chain and rotary chain continue to move, the carton moves along with it. When the top page of the carton has completely entered the rotary chain, the rear pressure plate will start folding from the rear end pressing page. S6: When the carton moves to the pressing mechanism, the first and second gluing components apply glue to the inner surfaces of the front and rear pressing pages of the bottom and top pages of the carton. Then, through the interaction between the lever arm of the first hinge seat and the abutment platform, the front folding member and / or the rear folding member are driven to swing towards the carton as a whole, so that the second pusher firmly presses the glued bottom page front pressing page and / or rear pressing page onto the corresponding side page front adhesive page and / or rear adhesive page, and maintains pressure until the adhesive cures.
[0025] This improved solution integrates pre-folding at a specific angle, automatic nesting through a closing motion, precise glue application, and final pressing triggered by conveyor power into a coherent process chain. This solves the coordination problem between processes and avoids delamination caused by misalignment of the adhesive surfaces. It ensures that every carton undergoes a completely consistent processing procedure, eliminating quality fluctuations caused by ambiguity in operation or control logic, and achieving consistency and predictability in packaging quality. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a front structural diagram of the packaging forming production line of the embodiment; Figure 2 This is a top view of the packaging forming production line of the embodiment; Figure 3 This is a schematic diagram of the packaging forming production line of an embodiment; Figure 4 yes Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 yes Figure 3 A magnified schematic diagram of the local structure at point B; Figure 6 This is a schematic diagram of the cleaning and lubrication assembly in an embodiment.
[0027] In the attached diagram: 100: Feeding mechanism; 200: Paper feeding mechanism; 300: Paper unpacking and packaging mechanism; 310: Conveyor chain; 320: Folding assembly; 321: Side folding assembly; 322: Top folding assembly; 330: First end folding assembly; 331: Front folding component; 332: Rear folding component; 333: First hinge seat; 334: First push block; 335: Second hinge seat; 336: Second push block; 337: Lever arm, 338: sliding contact end, 340: second end hinge assembly, 341: rotary strip, 342: front pressure plate, 343: rear pressure plate, 400: pressing mechanism, 410: contact platform, 500: cleaning and lubrication assembly, 510: blowing and spraying brush, 520: air jet channel, 530: oil spray channel, 540: connecting plate, 550: tension adjuster, 551: U-shaped plate, 552: adjusting shaft, 553: nut. Detailed Implementation
[0028] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.
[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0030] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.
[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0032] Reference Figures 1 to 6 The following are several embodiments of a packaging forming production line and packaging forming method of the present invention.
[0033] The embodiments provided by this invention offer a packaging forming production line, such as... Figures 1 to 6As shown, the device includes a product feeding mechanism 100, a paper feeding mechanism 200, a paper folding and packaging mechanism 300, a gluing mechanism, and a pressing mechanism 400. The paper folding and packaging mechanism 300 includes a transmission component for driving the carton and product to move during the packaging process. The transmission component includes: Circulating transmission chain 310; The folding assembly 320 includes a side folding assembly 321 located on both sides of the transmission chain 310, a first end folding assembly 330 located on the transmission chain 310, and a second end folding assembly 340 located opposite above the transmission chain 310. The side folding assembly 321 on one side is also provided with a top page folding assembly 322. The cleaning and lubrication assembly 500 includes a purge and oil spray brush 510 disposed toward the transmission chain 310. The purge and oil spray brush 510 is provided with an air jet channel 520 and an oil spray channel 530, which are respectively connected to an external air source and a lubricating oil tank. The purge and oil spray brush 510 performs purge and oil spray lubrication actions on the transmission chain 310 according to a preset cycle.
[0034] In this embodiment, the conveyor chain is responsible for carrying and driving the cartons and products sequentially through each functional station, achieving continuous assembly line operation. In the folding assembly, the side folding assemblies on both sides are responsible for folding the left and right sides of the cartons; the first end folding assembly on the chain is responsible for folding the front and rear bottom flaps of the cartons; and the second end folding assembly above the chain is responsible for folding the front and rear top flaps of the cartons, thus achieving a comprehensive and progressive folding of the cartons during transport. The blowing and oiling brush is equipped with air jet channels and oil jet channels, respectively connecting to an external air source and a lubricating oil tank. Those skilled in the art will understand that the time cycle or production line operating cycle can be configured to automatically initiate a cleaning and lubrication process every 72-96 hours (approximately 3-4 days) or after N packaging cycles. Those skilled in the art should understand that, to achieve automatic control, this component must be connected to the production line controller (PLC or industrial PC) via control elements such as solenoid valves. The blowing and oiling brush with dual functions of blowing and oiling aims to solve the problem of online maintenance of the chain. The controller is responsible for starting and stopping the purging and oiling actions according to preset logic (such as time, number of chain revolutions). The first end folding assembly on the conveyor chain is fixed or hinged to a pusher block or clamp that moves synchronously with the conveyor chain, thus maintaining a relatively stationary motion relationship with the carton in order to perform the folding action.
[0035] This embodiment integrates online cleaning and lubrication functions into the core transmission components of the packaging production line, solving the problems of difficult chain maintenance and the need for maintenance to stop production.
[0036] In an optional embodiment, such as Figure 3 and Figure 6As shown, the blow-and-spray brush 510 is located on the return section of the transmission chain 310 or near the driven wheel. It includes a connecting plate 540, a brush body, and a tension adjuster 550. One end of the brush body is hinged to one end of the connecting plate 540, so that the bottom brush surface of the brush body abuts against the transmission chain 310. The tension adjuster 550 includes a U-shaped plate 551 and an adjusting shaft 552. The U-shaped opening of the U-shaped plate 551 is inserted into the middle section of the connecting plate 540 and fixed. The other end has a shaft hole facing the brush body. A nut 553 is provided on the shaft hole. The adjusting shaft 552 passes through the shaft hole and its end abuts against the top side of the brush body. The air jet channel 520 and the oil jet channel 530 are respectively arranged from the top side to the bottom side of the brush body and are arranged facing the transmission chain 310.
[0037] In this embodiment, the return section or the location near the driven wheel is convenient for installation, and the chain tension is relatively stable and the speed is uniform, which is beneficial for the blowing and oiling effect. The return section refers to the bottom of the circulating transmission chain, and the area below the return section is also convenient for collecting blown-off debris. The bottom side of the brush body directly abuts against the surface of the transmission chain, and its mechanical brushing action can powerfully remove firmly adhered sludge, stubborn paper scraps, and scale. At the same time, lubricating oil or grease can be directly applied to the chain surface through the brush body to form a more uniform and stronger adhesion oil film, resulting in a more durable and reliable lubrication effect.
[0038] This embodiment, through its hinged connection and independent tension adjuster design, allows the brush body to adapt to minor chain fluctuations, vibrations, or wear-induced gap changes within a certain range. Rotating the adjusting shaft controls the brush's pressure on the chain, ensuring optimal and constant contact pressure. This prevents insufficient pressure leading to cleaning and lubrication failure, as well as excessive pressure causing premature brush wear or abnormally increased chain resistance. The air and oil spray channels are directly integrated within the brush body, allowing high-pressure gas and lubricating oil to act directly on the cleaning and lubrication points from the bottom of the brush body, reducing airflow and oil wastage and splashing. When the brush wears out, only the brush body needs to be replaced without disassembling the entire device. The pressure can be quickly adjusted on-site by rotating the adjusting shaft with a simple tool, eliminating the need for complex mechanical disassembly and repositioning, thus reducing the technical difficulty and time cost of maintenance.
[0039] In an optional embodiment, such as Figure 2 and Figure 4 As shown, the first end folding assembly 330 is equidistantly arranged on the transport chain 310. The first end folding assembly 330 includes two front folding members 331 and two rear folding members 332 disposed on both sides of the transport chain 310 in the traveling direction. The front folding members 331 and / or the rear folding members 332 include: The first hinge seat 333 is connected to the inside of the transmission chain 310 via a hinge shaft. It includes a first push block 334 for pushing the front adhesive page and / or the rear adhesive page of the carton side page. The second hinge seat 335 is fixed to the side of the first hinge seat 333 away from the transmission chain 310. It includes a second push block 336. A carton bottom sheet placement area is provided between the second hinge seats 335 of the front folding member 331 and the rear folding member 332. The second push block 336 is used to push the front pressing page and / or the rear pressing page of the carton bottom sheet.
[0040] In this embodiment, the equidistant arrangement ensures synchronization with the carton's rhythm, allowing each carton to be served by a pair of folding pieces. The first end folding assembly employs a double-folding piece design, with a pair at the front and a pair at the back (four in total), respectively handling the front and rear ends of the carton. The first hinge seat gains freedom of movement through a hinge shaft, with a first pusher block on it responsible for folding the adhesive pages on the side panels. The second hinge seat is fixed to the first hinge seat, with a second pusher block on it responsible for folding the pressing pages on the bottom panels. The two pushers are linked through a common hinge seat, ensuring the correlation of their movements and the coordination of folding different parts of the carton. Connected to the inside of the conveyor chain via a hinge shaft, the first hinge seat is mounted on a pusher slider or mounting plate that moves synchronously with the conveyor chain. This mounting plate is fixed to the chain, and the hinge shaft allows the first hinge seat (and the second hinge seat fixed to it) to swing relative to the mounting plate. The carton bottom sheet placement area refers to the space between the two second hinge seats, located above the conveyor chain, where the carton bottom sheet is laid flat, and the second push block is located at the edge of this area.
[0041] This embodiment provides a compact, interconnected mechanical structure that uses a single swinging component to simultaneously control the folding of two different parts (side page and bottom page) of the carton, simplifying the mechanism.
[0042] In an optional embodiment, such as Figure 4 As shown, the first push block 334 and the second push block 336 form an acute angle. When the first push block 334 is in the vertical position, the first push block 334 abuts against the front adhesive page and / or the rear adhesive page of the carton side page, so that the front adhesive page and / or the rear adhesive page are folded relative to the carton side page into a first folding angle close to a right angle. The second push block 336 abuts against the front pressing page and / or the rear pressing page of the carton bottom page, so that the front pressing page and / or the rear pressing page are folded relative to the carton bottom page into a second folding angle in an inclined state. The first folding angle is greater than the second folding angle so that when the carton side page is folded towards the carton bottom page under the action of the side folding assembly, the front adhesive page and / or the rear adhesive page are located on the inner side of the front pressing page and / or the rear pressing page, and after gluing, they are pressed onto the outer side of the front pressing page and / or the rear pressing page.
[0043] In this embodiment, the acute angle is designed to allow the pressing sheet of the bottom page and the adhesive sheet of the side page of the carton to be staggered. The first folding angle (near a right angle) and the second folding angle (incline) are set. At the initial station, the first pusher raises the side adhesive sheet to nearly 90 degrees, and the second pusher folds the bottom pressing sheet at a smaller angle (45-60 degrees). When the subsequent side pages are closed inwards by the side folding assembly, the nearly upright side adhesive sheet will naturally be positioned inside the inclined bottom pressing sheet. This creates conditions for subsequent gluing and pressing, ensuring the adhesive area and strength.
[0044] This embodiment uses a mechanical structure to pre-set a precise folding angle difference, physically ensuring the correct spatial nesting relationship of the adhesive sheets. This solves the technical problems of misalignment and weak adhesion caused by improper folding sequence and angle, thus improving the first-pass yield of packaging.
[0045] In an optional embodiment, such as Figure 2 and Figure 4 The first hinge seat 333 is provided with a lever arm 337, the distal end of which is a sliding abutment end 338. The pressing mechanism 400 is provided with an abutment platform 410 on the outside of the transmission chain 310. When the transmission chain 310 runs to the pressing mechanism 400, the sliding abutment end 338 slides against the abutment platform 410. The abutment surface of the abutment platform 410 is inclined so that the lever arm 337 starts to swing around the hinge axis during the movement. The first hinge seat 333 and the first push block 334, the second hinge seat 335 and the second push block 336 swing around the hinge axis toward the carton. This swing causes the second push block 336 to push the front end pressing page and / or the rear end pressing page of the bottom page of the carton to press against the front end adhesive page and / or the rear end adhesive page of the side page of the carton.
[0046] In this embodiment, a lever arm extends from the first hinge seat, and its end (sliding abutment end) contacts a fixed inclined abutment platform when the production line reaches the pressing station. Since the abutment surface is inclined, the end of the lever arm slides along the inclined surface as the conveyor chain continues to advance. This sliding motion is converted into a torque that forces the entire first and second hinge seats to swing about the hinge axis towards the carton. This swinging motion causes the second push block, which was originally in an inclined position, to move further inward, firmly pressing the glued bottom page pressing page onto the side page adhesive page located inside it, completing the final bonding. In some preferred embodiments, to prevent wear and ensure smooth movement, the sliding abutment end is a roller. Correspondingly, the inclined surface of the abutment platform is a smooth steel plate or guide rail, or a grooved track to guide the roller.
[0047] This embodiment utilizes the continuous motion of the production line itself as a power source. The final pressing action is triggered by the sliding contact end of the lever arm and the contact platform, eliminating the need for additional cylinders or motors, thus saving energy, simplifying control, and improving reliability. It achieves synchronization between the pressing action and the conveying process. The pressing force and duration are determined by the slope of the contact platform and the chain speed, ensuring stability and controllability.
[0048] In an optional embodiment, such as Figures 3 to 5 As shown, the second end folding assembly 340 includes a rotating chain 341 located above the transmission chain 310 and a front pressure plate 342 and a rear pressure plate 343 equidistantly suspended on the rotating chain. The rotating chain 341 operates synchronously with the transmission chain 310, so that the front pressure plate 342 and the rear pressure plate 343 are respectively aligned with the front folding member 331 and the rear folding member 332. The front pressure plate 342 and the rear pressure plate 343 are used to push the front end pressing page and / or the rear end pressing page of the carton top page, so that after gluing, the front end pressing page and / or the rear end pressing page of the carton top page are pressed onto the outside of the front end gluing page and / or the rear end gluing page of the carton side page.
[0049] In this embodiment, a top-mounted rotary chain that operates synchronously with the main conveyor chain ensures the alignment of the top pressure plate with the bottom carton. The front and rear pressure plates are equidistantly suspended on the rotary chain, corresponding to the front and rear positions of the carton, respectively. They are used to push down the front and rear pressing pages of the top page after the top page is guided into position and glued, so that it is glued to the side pages.
[0050] In an optional embodiment, such as Figures 1 to 3 As shown, the side folding assembly 321 includes a folding roller group arranged in a curved manner along the travel path of the conveyor chain 310; the folding roller group includes a first guide roller and a second guide roller located upstream of the travel path and a top page folding assembly 322 located downstream, the top page folding assembly 322 including a third guide roller; wherein, the first guide roller and the second guide roller are respectively located on both sides of the conveyor chain 310, and their extension direction gradually rises from the outside to the inside, so as to guide the side pages of the carton on both sides and their connected front and rear adhesive pages to stand upright; the third guide roller is located downstream of the second guide roller, and its extension direction gradually becomes horizontal from the outside to the inside, so as to guide the top page of the carton from the side to the top of the product.
[0051] This embodiment consists of a fixed spatial curve guiding system composed of a first leading roller, a second leading roller, and a third guiding roller. The first leading roller and the second guiding roller are arranged in a spatial curve from the outside to the inside and from low to high. The edge of the carton side page contacts and moves along the roller surface, and is smoothly and gradually guided from a horizontal state to a vertical (standing) state. The third guiding roller is located downstream, and its roller surface curve gradually becomes horizontal from the outside to the inside, guiding and smoothing the already standing and tilted top page above the product, preparing for subsequent pressing.
[0052] This embodiment utilizes a fixed curved guide rail to achieve folding, which is simple, reliable, and maintenance-free. It has no complex driving components, achieves a highly smooth and controllable folding process, protects the appearance quality of the carton, and is suitable for high-speed production.
[0053] In an optional embodiment, such as Figure 1 As shown, the gluing mechanism is located between the folding packaging mechanism 300 and the pressing mechanism 400, and includes a first gluing component and a second gluing component; the nozzle of the first gluing component is arranged facing the inner side of the front pressing page and / or the rear pressing page of the bottom page of the carton; the nozzle of the second gluing component is arranged facing the inner side of the front pressing page and / or the rear pressing page of the top page of the carton.
[0054] In this embodiment, the gluing mechanism is located after all major folding actions are completed and before the final mechanical pressing. The nozzles are divided into two groups: the first group targets the inner surface of the bottom pressing page, and the second group targets the inner surface of the top pressing page. This allows direct application to the final bonding surface, avoiding glue waste and contamination. In this embodiment, glue spraying control is achieved by a position sensor (such as a photoelectric switch) detecting when the carton arrives at the glue spraying station. The controller then instructs the solenoid valve to open for timed glue spraying. The spraying duration (which determines the glue amount) can be adjusted according to the carton speed and glue line length. This embodiment uses the first and second gluing components to precisely apply glue to the inner surface of the pressing pages, reducing glue usage and solving quality problems such as incomplete bonding and glue separation caused by improper spraying position.
[0055] On the other hand, the present invention also provides a packaging forming method, which performs the following steps using a packaging forming production line of one or more alternative embodiments as described above: S01: Trigger the cleaning and lubrication process when the preset maintenance cycle is reached, when a fixed time point is reached, or according to the user's input request command; S02: When the production line is running normally and there is no need to stop or disassemble the machine, control the cleaning and lubrication component to start its cleaning function; high-pressure gas is continuously sprayed out from the jet channel and acts on the chain links, rollers and pins of the moving transmission chain to blow away the dust and paper scraps attached to them. S03: After purging is completed or during purging in between, control the purging oil spray brush to switch to lubrication function; lubricating oil is atomized and sprayed from the oil spray channel and evenly coated on the cleaned conveyor chain surface; S04: After the preset time of purging and lubrication is completed, the purging and oil spraying brush is turned off, and the cleaning and lubrication process ends; the transmission chain continues to drive the carton and product to operate normally in the cleaned and lubricated state for packaging operations.
[0056] This embodiment sets up three triggering methods, including periodic maintenance, scheduled maintenance, and manual request maintenance, which take into account planning, regularity, and flexibility. It automates preventive maintenance, transforms unplanned downtime cleaning into planned online maintenance, solves the problem of chain maintenance requiring downtime and production stoppage, and significantly improves the overall efficiency of the equipment.
[0057] In an optional embodiment, the following steps are also included: S1: The product feeding mechanism separates and transports the bottles according to a preset number of columns. At the same time, the paper feeding mechanism transports the unfolded carton to the bottom page placement area of the conveyor chain. When the bottom page of the carton just enters the bottom page placement area, it is at the end of the conveyor chain. At this time, the front folding part of the first end folding component has just rotated and circulated from the bottom surface to the top surface. The front end of the bottom page of the carton is abutted by the front folding part. As the conveyor chain continues to circulate, the bottom page of the carton follows. When all the bottom pages of the carton have entered the end of the conveyor chain, the rear folding part moves from the bottom surface to the top surface, thereby abutting the rear end of the bottom page of the carton. At this time, the separated bottle group is guided onto the bottom page of the carton located on the conveyor chain. S2: The first push block of the front folding member and / or the first push block of the rear folding member are in an upright state, so that the first push block folds the front end adhesive page and / or the rear end adhesive page of the carton side page to form a first folding angle close to a right angle, while the second push block folds the front end pressing page and / or the rear end pressing page of the carton bottom page to form an inclined second folding angle, and ensures that the first folding angle is greater than the second folding angle. S3: During the continued conveying process of the conveyor chain, the first and second guide rollers of the side folding assembly cause the carton side pages to close towards the carton bottom page. During this process, since the first folding angle is greater than the second folding angle, the front and / or rear adhesive pages on the side pages are naturally located on the opposite inner side of the front and / or rear pressing pages on the bottom page, forming a preliminary pressing and overlapping relationship. S4: As the conveyor chain continues to transport the product to the third leading roller, the top page of the carton is guided from the side to above the product, at which point the bottom, side, and top pages of the carton are closed. S5: During the continued conveying process of the conveyor chain, the top page of the carton enters the rotary chain and is pressed against the front end of the top page of the carton by the front pressure plate of the second end folding assembly, and the front pressing page is folded. As the conveyor chain and rotary chain continue to move, the carton moves along with it. When the top page of the carton has completely entered the rotary chain, the rear pressure plate will start folding from the rear end pressing page. S6: When the carton moves to the pressing mechanism, the first and second gluing components apply glue to the inner surfaces of the front and rear pressing pages of the bottom and top pages of the carton. Then, through the interaction between the lever arm of the first hinge seat and the abutment platform, the front folding member and / or the rear folding member are driven to swing towards the carton as a whole, so that the second pusher firmly presses the glued bottom page front pressing page and / or rear pressing page onto the corresponding side page front adhesive page and / or rear adhesive page, and maintains pressure until the adhesive cures.
[0058] This embodiment solves the problem of coordination between processes by linking pre-folding at a specific angle, automatically forming a nested relationship through closing motion, applying glue at precise positions, and triggering final pressing with conveyor power into a coherent process chain. This avoids glue separation caused by misalignment of the adhesive surfaces. It ensures that every carton undergoes a completely consistent processing procedure, eliminating quality fluctuations caused by ambiguity in operation or control logic, and achieving consistency and predictability in packaging quality.
[0059] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A packaging forming production line, comprising a product feeding mechanism (100), a paper feeding mechanism (200), a paper folding and packaging mechanism (300), a gluing mechanism, and a pressing mechanism (400), characterized in that, The folding packaging mechanism (300) includes a conveying component for driving the carton and product to move during the packaging process, the conveying component comprising: A continuously operating transmission chain (310); The folding assembly (320) includes a side folding assembly (321) located on both sides of the transmission chain (310), a first end folding assembly (330) located on the transmission chain (310), and a second end folding assembly (340) located opposite above the transmission chain (310), wherein one side folding assembly (321) is also provided with a top page folding assembly (322). The cleaning and lubrication assembly (500) includes a purge oil spray brush (510) disposed toward the transmission chain (310). The purge oil spray brush (510) is provided with an air jet channel (520) and an oil spray channel (530), which are respectively connected to an external air source and a lubricating oil tank. The purge oil spray brush (510) performs purge and oil spray lubrication actions on the transmission chain (310) according to a preset cycle.
2. The packaging forming production line according to claim 1, characterized in that: The blow-off oil spray brush (510) is located on the return section of the transmission chain (310) or near the driven wheel. It includes a connecting plate (540), a brush body, and a tension adjuster (550). One end of the brush body is hinged to one end of the connecting plate (540), so that the bottom brush surface of the brush body abuts against the transmission chain (310). The tension adjuster (550) includes a U-shaped plate (551) and an adjusting shaft (552). The U-shaped opening of the U-shaped plate (551) is inserted into the middle section of the connecting plate (540) and fixed. The other end is provided with a shaft hole facing the brush body. A nut (553) is provided on the shaft hole. The adjusting shaft (552) passes through the shaft hole and its end abuts against the top side of the brush body. The air jet channel (520) and the oil spray channel (530) are respectively arranged from the top side to the bottom side of the brush body and are arranged facing the transmission chain (310).
3. The packaging forming production line according to claim 1, characterized in that: The first end folding assembly (330) is equidistantly arranged on the transmission chain (310). The first end folding assembly (330) includes two front folding members (331) and two rear folding members (332) arranged on both sides of the transmission chain (310) in the direction of travel. The front folding members (331) and / or the rear folding members (332) include: The first hinge seat (333) is connected to the inside of the transmission chain (310) via a hinge shaft, and includes a first push block (334) for pushing the front adhesive page and / or rear adhesive page of the carton side page; The second hinge seat (335) is fixed to the side of the first hinge seat (333) away from the transmission chain (310). It includes a second push block (336). A carton bottom sheet placement area is provided between the second hinge seats (335) of the front folding member (331) and the rear folding member (332). The second push block (336) is used to push the front end pressing page and / or the rear end pressing page of the carton bottom sheet.
4. The packaging forming production line according to claim 3, characterized in that: The first push block (334) and the second push block (336) form an acute angle; When the first push block (334) is in the upright state, the first push block (334) abuts against the front adhesive page and / or the rear adhesive page of the carton side page, so that the front adhesive page and / or the rear adhesive page are folded relative to the carton side page into a first folding angle close to a right angle. The second push block (336) abuts against the front pressing page and / or the rear pressing page of the carton bottom page, so that the front pressing page and / or the rear pressing page are folded relative to the carton bottom page into a second folding angle in an inclined state. The first folding angle is greater than the second folding angle so that when the carton side page is folded towards the carton bottom page under the action of the side folding assembly (321), the front adhesive page and / or the rear adhesive page are located on the inner side of the front pressing page and / or the rear pressing page, and after gluing, they are pressed on the outer side of the front pressing page and / or the rear pressing page.
5. A packaging forming production line according to claim 4, characterized in that: The first hinge seat (333) is provided with a lever arm (337), the far end of which is a sliding abutment end (338). The pressing mechanism (400) is located outside the transmission chain (310) and is provided with an abutment platform (410). When the transmission chain (310) runs to the pressing mechanism (400), the sliding abutment end (338) slides against the abutment platform (410). The abutment surface of the abutment platform (410) is inclined so that the lever arm (337) starts to swing around the hinge axis during the movement. The first hinge seat (333) and the first push block (334), the second hinge seat (335) and the second push block (336) swing around the hinge axis toward the carton. This swing causes the second push block (336) to push the front end pressing page and / or the rear end pressing page of the bottom page of the carton to press against the front end adhesive page and / or the rear end adhesive page of the side page of the carton.
6. A packaging forming production line according to claim 3, characterized in that: The second end folding assembly (340) includes a rotating chain (341) located above the transmission chain (310) and a front pressure plate (342) and a rear pressure plate (343) equidistantly suspended on the rotating chain (341). The rotating chain (341) operates synchronously with the transmission chain (310) so that the front pressure plate (342) and the rear pressure plate (343) are respectively aligned with the front folding member (331) and the rear folding member (332). The front pressure plate (342) and the rear pressure plate (343) are used to push the front end pressing page and / or the rear end pressing page of the top page of the carton, so that after gluing, the front end pressing page and / or the rear end pressing page of the top page of the carton are pressed against the outside of the front end adhesive page and / or the rear end adhesive page of the side page of the carton.
7. A packaging forming production line according to claim 1, characterized in that: The side folding assembly (321) includes a folding roller group arranged in a curved manner along the travel path of the conveyor chain (310); the folding roller group includes a first guide roller and a second guide roller located upstream of the travel path and a top page folding assembly (322) located downstream, the top page folding assembly (322) including a third guide roller; wherein, the first guide roller and the second guide roller are respectively located on both sides of the conveyor chain (310), and their extension direction gradually rises from the outside to the inside, so as to guide the side pages of the carton on both sides and their connected front and rear adhesive pages to stand up; the third guide roller is located downstream of the second guide roller, and its extension direction gradually becomes horizontal from the outside to the inside, so as to guide the top page of the carton from the side to the top of the product.
8. The packaging forming production line according to claim 1, characterized in that: The gluing mechanism is located between the folding packaging mechanism (300) and the pressing mechanism (400), and includes a first gluing component and a second gluing component; the nozzle of the first gluing component is arranged facing the inner side of the front pressing page and / or the rear pressing page of the bottom page of the carton; the nozzle of the second gluing component is arranged facing the inner side of the front pressing page and / or the rear pressing page of the top page of the carton.
9. A packaging forming method, characterized in that, The following steps are performed using a packaging forming production line as described in any one of claims 1-8: S01: Trigger the cleaning and lubrication process when the preset maintenance cycle is reached, when a fixed time point is reached, or according to the user's input request command; S02: When the production line is running normally and there is no need to stop or disassemble the machine, control the cleaning and lubrication component (500) to start its cleaning function by blowing the oil spray brush; high pressure gas is continuously sprayed out from the jet channel and acts on the chain links, rollers and pins of the moving transmission chain (310) to blow away the dust and paper scraps attached to them. S03: After purging is completed or during purging in an alternating manner, control the purging oil spray brush to switch to the lubrication function; the lubricating oil is atomized and sprayed from the oil spray channel and evenly coated on the cleaned transmission chain (310) surface; S04: After completing the pre-set time of purging and lubrication, control the purging oil spray brush to close, and the cleaning and lubrication process ends; the transmission chain (310) continues to drive the carton and product to operate normally in the cleaned and lubricated state, and performs packaging operations.
10. A packaging forming method according to claim 9, characterized in that, It also includes the following steps: S1: The product feeding mechanism (100) separates and transports the bottles according to a preset number of columns. At the same time, the paper feeding mechanism (200) transports the unfolded carton to the bottom page placement area of the conveyor chain (310). When the bottom page of the carton just enters the bottom page placement area, it is at the end of the conveyor chain (310). At this time, the front folding part (331) of the first end folding component (330) has just rotated and circulated from the bottom surface to the top surface. The front end of the bottom page of the carton is abutted by the front folding part (331). As the conveyor chain (310) continues to circulate, the bottom page of the carton follows. When all the bottom pages of the carton enter the end of the conveyor chain (310), the rear folding part (332) moves from the bottom surface to the top surface and abuts the rear end of the bottom page of the carton. At this time, the separated bottle group is introduced into the bottom page of the carton located on the conveyor chain (310). S2: The first push block (334) of the front folding member (331) and / or the first push block (334) of the rear folding member (332) are in an upright state, so that the first push block (334) folds the front end adhesive page and / or the rear end adhesive page of the carton side page to form a first folding angle close to a right angle, and at the same time, the second push block (336) folds the front end pressing page and / or the rear end pressing page of the carton bottom page to form an inclined second folding angle, and ensures that the first folding angle is greater than the second folding angle; S3: During the continued conveying process of the conveyor chain (310), the first guide roller and the second guide roller of the side folding assembly (321) cause the carton side pages to close towards the carton bottom page; during this process, since the first folding angle is greater than the second folding angle, the front end adhesive page and / or the rear end adhesive page on the carton side page are naturally located on the opposite inner side of the front end pressing page and / or the rear end pressing page on the carton bottom page, forming a preliminary pressing and overlapping relationship; S4: As the conveyor chain (310) continues to convey the product to the third leading roller, the top page of the carton is guided from the side to the top of the product, at which point the bottom page, side page, and top page of the carton are closed. S5: During the continued conveying process of the conveyor chain (310), the top page of the carton enters the rotary chain (341) and is pressed against the front end of the top page of the carton by the front pressure plate (342) of the second end folding assembly (340), and the front end pressing page is folded. As the conveyor chain (310) and the rotary chain (341) continue to move, the carton moves along with it. When the top page of the carton has entered the rotary chain (341), the rear pressure plate (342) will start folding from the rear end pressing page. S6: When the carton is moved to the pressing mechanism (400), the first glue application component and the second glue application component apply glue to the inner surfaces of the front pressing page and the rear pressing page of the bottom and top pages of the carton. Then, through the interaction between the lever arm (337) of the first hinge seat (333) and the abutment platform (410), the front folding member (331) and / or the rear folding member (332) are driven to swing towards the carton as a whole, so that the second push block (336) firmly presses the glued bottom page front pressing page and / or rear pressing page onto the corresponding side page front adhesive page and / or rear adhesive page, and maintains pressure until the adhesive cures.