Longitudinal conveying and paper cutting system and method for special-shaped carton transparent paper

Abstract

The invention discloses a longitudinal conveying and paper cutting system and method for special-shaped carton cellophane paper, the system is vertically arranged in a cubic mode, and the cellophane paper is conveyed from top to bottom to reach a cutting station and a wrapping station. The system is sequentially provided with a horseshoe opening cutting mechanism, a horseshoe opening cutting mechanism and a horseshoe opening cutting mechanism from top to bottom, the paper feeding mechanism is used for conveying transparent paper downwards through power provided by a paper feeding roller; the cutter mechanism is used for cutting off transparent paper through a transparent paper cutter which is transversely arranged; the vacuum conveying mechanism comprises a plurality of vacuum groove long conveying belts and vacuum groove short conveying belts which are vertically arranged, and transparent paper is adsorbed through negative pressure and conveyed downwards; according to the stretching mechanism, fan-shaped stretching rollers coaxially installed on the two sides make contact with the two corner areas of the transparent paper in the rotating process and expand outwards, and smooth stretching of the transparent paper is achieved. The whole system drives all the mechanisms to start and stop in sequence through a servo motor, and efficient and accurate transparent paper conveying and cutting are achieved.

Description

Technical Field

[0001] This invention relates to the field of cigarette pack packaging equipment and technology, mainly to the technology of wrapping cigarette cartons with transparent paper, specifically a longitudinal conveying and cutting system and method for transparent paper of irregularly shaped cigarette cartons. Background Technology

[0002] In recent years, competition in the cigarette market has intensified, leading to a surge in demand for irregularly shaped cigarette cartons. A system capable of longitudinally conveying the transparent paper from cartons to wrap these cartons has emerged. However, in actual production, this system has resulted in a large number of defective products with misaligned paper strips. Cigarettes using irregularly shaped cartons are typically high-end products with stringent quality requirements. The large number of defective products necessitates manual disassembly and repackaging, which is wasteful of manpower and resources. Furthermore, if these defective products are not completely removed and instead enter the market, consumers may question the company's perception of its high-end products, damaging the brand image and causing incalculable losses. Therefore, the development of a control method for a longitudinal conveying system of transparent paper for irregularly shaped cigarette cartons that meets actual production needs is urgently needed.

[0003] The existing conveying system primarily works by guiding the transparent paper into position, cutting it into individual sheets, matching them with the cigarette cartons to be wrapped, and then sending them to the wrapping station. This process involves two stages: first, the transparent paper is fed by rollers to the cutting station; second, the cut paper is transported to the wrapping station under vacuum pressure and a conveyor belt for packaging the irregularly shaped cartons. However, this method suffers from a low yield rate. In actual production, a large number of defective products with issues such as misaligned stitching and wrinkled lamination are found, resulting in a persistently high product defect rate. Since products using irregularly shaped cartons are typically high-end products with extremely high quality requirements, the rejection of numerous misaligned products necessitates rework, wasting manpower and materials and significantly impacting production efficiency. Furthermore, once these defective products enter the market, they severely damage the image and positioning of these high-end products in the minds of consumers, causing immeasurable harm to the company's high-quality development. Summary of the Invention

[0004] To address the aforementioned problems and reduce the occurrence of misaligned strips of cigarettes during production, this invention aims to design and implement a control system and method for a longitudinal conveying system of transparent paper that meets the demands of high-quality production, while fully utilizing existing resources. Based on the inventors' numerous experiments and summaries, it was discovered that the direct cause of misaligned strips is the unevenness of the transparent paper at the wrapping station during packaging. Therefore, this invention modifies the control method of the existing longitudinal conveying system of transparent paper, changing the two-stage conveying stroke to a single-stage stroke, where the transparent paper is conveyed to the wrapping station for cutting. This ensures that the transparent paper is fully expanded and positioned before cutting, maintaining a flat and even surface after cutting. This invention significantly solves the problem of uneven transparent paper at the wrapping station, thereby greatly reducing the defect rate of misaligned strips of cigarettes, reducing manpower and material costs, ensuring product quality and safety, and achieving the goal of continuously improving product quality.

[0005] Specifically, this invention is implemented as follows: a longitudinal conveying and cutting system for shaped transparent paper boxes, the system being vertically cubically arranged, the transparent paper being conveyed from top to bottom to the cutting station and the wrapping station, the system being arranged from top to bottom as follows:

[0006] The horseshoe-shaped cutting mechanism is arranged laterally in the upper area in front of the paper feeding guide. The horseshoe cutter can cut the transparent paper that passes down the paper feeding guide with a horseshoe shape by rotating.

[0007] The paper feeding mechanism is arranged laterally in the lower area in front of the paper feeding guide. The inner side of the paper feeding roller contacts the surface of the transparent paper that passes down along the paper feeding guide and provides power to continue feeding it downward by rotating.

[0008] The cutting mechanism is arranged laterally in the area below the paper feed roller, including a transversely arranged transparent paper cutter. The transparent paper cutter rotates around an axis, and the blade can contact the transparent paper and cut it.

[0009] The vacuum conveying mechanism, located in the area below the cutting mechanism, includes several long vacuum trough conveyor belts and short vacuum trough conveyor belts arranged vertically. The long vacuum trough conveyor belts and short vacuum trough conveyor belts can rotate downward in a circular motion in the longitudinal direction. The short vacuum trough conveyor belts are located between the long vacuum trough conveyor belts on both sides.

[0010] The stretching mechanism is located in the area in front of and below the vacuum conveying mechanism. Two fan-shaped stretching rollers are coaxially installed on both sides. During rotation, they can contact the two corners of the transparent paper and form an outward expanding force.

[0011] The wrapping station is located in the area formed by the long conveyor belts of the vacuum trough on both sides, below the short conveyor belts of the vacuum trough, and above the stretching mechanism. The upper part of the transparent paper is fixed by the adsorption of the long and short conveyor belts of the vacuum trough, while the lower part is stretched outward by the rotation of the two fan-shaped stretching rollers to achieve flatness.

[0012] Furthermore, the vacuum conveying mechanism includes: a vacuum plate with a cavity or air passage inside, and vacuum holes connected to the inner cavity formed by openings on both sides and the top of the plate to form a vacuum groove negative pressure belt; a vacuum groove main drive shaft is installed above the vacuum plate, and a vacuum groove passive drive shaft is installed below it; the vacuum groove long conveyor belt consists of two belts, with several small holes partially or completely opened on the surface, which are arranged longitudinally in the vacuum grooves on both sides of the vacuum plate, and are fitted on the vacuum groove main drive shaft and the vacuum groove passive drive shaft, moving in a ring as the vacuum groove main drive shaft rotates, and can adsorb transparent paper and move accordingly.

[0013] Furthermore, there are at least three short conveyor belts for the vacuum tank, which are installed longitudinally in the top area of ​​the vacuum plate. One end is installed on the passive drive shaft of the vacuum tank, and the other end is installed on the follower roller set in the slot opened in the upper part of the vacuum plate. Several small holes are also partially or completely opened on the short conveyor belts of the vacuum tank, and below them is a square vacuum tank. The vacuum tank negative pressure belt provides negative pressure adsorption to the transparent paper through the small holes.

[0014] Furthermore, the paper feeding mechanism includes a paper feeding roller and a paper feeding roller pad roller located behind the paper feeding roller. Transparent paper passes between the paper feeding roller and the paper feeding roller pad roller and can generate conveying power as the paper feeding roller rotates, so that the transparent paper is conveyed downward. The two ends of the paper feeding roller are provided with outwardly expanding spiral textures for spreading the transparent paper flat and conveying it downward.

[0015] Furthermore, the cutting mechanism includes a transparent paper cutter motor, which is mounted on the side plate of the bracket and connected to the transparent paper cutter through a transmission component. It can control the axial rotation of the transparent paper cutter and cut the transparent paper laterally.

[0016] Furthermore, the stretching mechanism includes a stretching shaft connected by a stretching roller motor, and two fan-shaped stretching rollers mounted on the stretching shaft. Each fan-shaped roller includes a fan-shaped lever that rotates with the shaft. The two fan-shaped levers are arranged obliquely to form a relative figure-eight structure, which can contact the surface of the transparent paper during rotation and provide downward and outward force as it rotates, thus stretching and flattening the transparent paper.

[0017] Furthermore, the drive motors of the horseshoe-shaped cutting mechanism, paper feeding mechanism, cutter mechanism, vacuum conveying mechanism, and stretching mechanism are all servo motors, and they can sequentially start and stop: the horseshoe-shaped cutting mechanism can cut horseshoe-shaped grooves on the transparent paper by rotating; the drive motor of the paper feeding roller starts and can convey the transparent paper downwards; as the transparent paper moves downwards, it reaches the vacuum tank negative pressure belt; the drive motor of the vacuum conveying mechanism starts and can adsorb the transparent paper onto the long and short conveyor belts of the vacuum tank and convey it downwards until it reaches the wrapping station, where it stops; after the transparent paper reaches the wrapping station, the negative pressure of the vacuum plate is interrupted, and the negative pressure belt can release the negative pressure. At this time, the fan-shaped stretching roller starts and can press the two lower ends of the transparent paper tightly, and rub and pull it downwards and outwards to flatten it; after the fan-shaped stretching roller completes the stretching, its rotation stops; the negative pressure of the vacuum plate is restored, which can make the negative pressure belt obtain negative pressure, and the transparent paper is flatly adsorbed on the vacuum plate. The transparent paper cutter starts, and after rotating, the cutter blade cuts the transparent paper and then resets.

[0018] Another aspect of the present invention provides a method for longitudinally conveying and cutting transparent paper for irregularly shaped strip boxes, comprising the following steps:

[0019] Transparent paper enters from above along the paper feeding guide plate and moves downward under the action of the paper feeding mechanism, entering the vacuum conveying mechanism; in this section, the horseshoe-shaped edge is cut by the horseshoe-shaped cutting mechanism on the pull line;

[0020] After entering the vacuum conveying mechanism, the transparent paper spreads along the vacuum plate under the adsorption and pulling action of the long conveyor belt in the vacuum trough on both sides;

[0021] When the bottom edge of the transparent paper reaches the stretching mechanism, it stops, and the negative pressure adsorption of the long conveyor belt of the vacuum tank is disconnected and adsorption is stopped. The fan-shaped stretching roller produces a downward and outward stretching action on the two lower corners of the transparent paper, flattening the transparent paper above the vacuum plate.

[0022] Subsequently, the negative pressure adsorption of the long conveyor belt in the vacuum tank is activated to adsorb the transparent paper again. The cutting mechanism cuts the transparent paper, and the cigarette pack to be wrapped enters, and then enters the next station.

[0023] Furthermore, this method includes the following detailed steps:

[0024] Step S1: Create a virtual spindle. Set a virtual spindle with a phase range of 0° to 360° as the time reference for the entire control process. The host industrial computer reads the phase information of the virtual spindle in real time and uses it as the basis for triggering subsequent actions.

[0025] Step S2: When the main shaft phase reaches the first preset relative degree, the motor of the vacuum conveying mechanism starts, driving the long conveyor belt of the vacuum tank to move, and the negative pressure in the vacuum plate starts, generating negative pressure in the vacuum tank negative pressure zone area of ​​the vacuum plate.

[0026] Step S3: When the spindle phase is the second preset relative degree, the horseshoe cutter of the horseshoe cutting mechanism cuts the corresponding line on the transparent paper.

[0027] Step S4: When the main shaft phase position is at the third preset relative degree, the motor of the paper feeding roller starts and conveys the transparent paper downward. As the transparent paper moves downward, it comes to the vacuum tank negative pressure belt. The negative pressure passes through the air holes on the long and short conveyor belts of the vacuum tank, adsorbs the transparent paper that passes by, and causes the transparent paper to move downward.

[0028] Step S5: When the main shaft phase reaches the fourth preset relative degree, the paper feeding roller stops moving, and the transparent paper is conveyed downward to the wrapping station under the combined action of the paper feeding mechanism and the vacuum conveying mechanism; at this time, the negative pressure of the vacuum conveying mechanism is released.

[0029] Step S6: When the transparent paper is conveyed to the wrapping station, the fan-shaped stretching roller rotates, causing the fan-shaped pusher to enter the pre-stretching station and contact the transparent paper. As the contact point rotates, it forms a downward force to stretch and flatten the transparent paper.

[0030] Step S7: After flattening, the negative pressure of the vacuum conveying mechanism is restored to re-adsorb the transparent paper, and the stretched transparent paper is adsorbed onto the vacuum plate.

[0031] Step S8: The transparent paper cutter of the cutting mechanism cuts the transparent paper horizontally to cut out a whole sheet of transparent paper to be wrapped; after the cut transparent paper is used, steps S1 to S8 are repeated.

[0032] Furthermore, in the area above the vacuum conveying mechanism, there is a synchronized short vacuum trough conveyor belt. Several short vacuum trough conveyor belts are evenly arranged vertically above the vacuum plate. They can synchronously adsorb the lower edge of the transparent paper with the long vacuum trough conveyor belt and synchronously move it horizontally downward to the wrapping station.

[0033] The working principle of this invention: The system of this invention mainly consists of five parts: a horseshoe-shaped cutting mechanism for cutting horseshoe-shaped edges on transparent paper; a paper feeding mechanism that conveys the transparent paper downwards via a paper feeding roller and a paper feeding roller pad, and flattens the transparent paper by spreading the spiral texture; a cutting mechanism that uses a transparent paper cutter to cut the transparent paper laterally; a vacuum conveying mechanism including a long vacuum trough conveyor belt and a short vacuum trough conveyor belt, which uses negative pressure to attract the transparent paper and convey it downwards; and a spreading mechanism that applies an outward spreading force to the two corner areas of the transparent paper via a fan-shaped spreading roller, flattening it. The key step of this invention is to change the existing two-stage conveying stroke to a single stage, ensuring that the transparent paper is already spread and flattened before cutting. Furthermore, the entire flattening process is assisted by the switching on and off of negative pressure adsorption. Before flattening, the negative pressure adsorption is disconnected, and a fan-shaped flattening roller with obliquely set fan-shaped paddles applies an outward expanding force to the two corner areas of the transparent paper, further ensuring the flatness of the transparent paper. Before cutting, the negative pressure adsorption is restored to fix the flattened transparent paper. At this point, after cutting, the transparent paper still remains in a flat state, without wrinkles, and with precise positioning. Throughout the process, precise control of the virtual spindle and servo motors ensures that each mechanism starts and stops in sequence, achieving highly efficient automated production. This system can significantly reduce the occurrence of misaligned products in strip glass wire drawing, improving product quality and production efficiency.

[0034] Beneficial technical effects of the present invention:

[0035] (1) Improved the yield rate of wrapping and film coating: By changing the two-stage conveying stroke of the transparent paper to one stage and completing the stretching and positioning before cutting, the flatness of the transparent paper at the wrapping station is ensured, thereby effectively reducing the problem of misaligned teeth of the glass strip, improving product quality, reducing product defects caused by unevenness, and improving the appearance quality and consistency of the final product.

[0036] (2) Reduced labor and material costs: Automated control systems and methods reduce the need for manual intervention, thus lowering labor costs. They also reduce rework and scrap rates due to quality issues, saving raw materials and other resources.

[0037] (3) The system has good reliability and stability: the use of servo motors and precise control methods makes the entire conveying and cutting process more stable and controllable. The system is flexibly designed and can be adjusted and expanded according to different production needs and processes to adapt to the packaging needs of different specifications and types of products. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural view of the longitudinal conveying and cutting system for the transparent paper of the irregularly shaped strip box according to the present invention;

[0039] Figure 2This is an exploded view of the longitudinal conveying and cutting system for the transparent paper of the irregularly shaped strip box according to the present invention;

[0040] Figure 3 This is a schematic diagram of the transparent paper conveying section structure of the longitudinal conveying and cutting system for the transparent paper of the irregularly shaped strip box of the present invention;

[0041] Figure 4 A schematic diagram of the longitudinal conveying and cutting system for the transparent paper of the irregularly shaped strip box of the present invention in use;

[0042] Figure 5 This is a schematic diagram of the adsorption and conveying principle of the vacuum conveying mechanism of the present invention;

[0043] Figure 6 This is a schematic diagram illustrating the steps of unfolding transparent paper using the unfolding mechanism of the present invention;

[0044] Figure 7 This is a schematic diagram illustrating the process steps of the unfolding mechanism of the present invention when cutting transparent paper and wrapping it with a cigarette pack;

[0045] Figure 8 This is a schematic diagram showing the state of the unfolding mechanism of the present invention when unfolding the transparent paper;

[0046] Figure 9 This is a three-dimensional view of the unfolding mechanism of the present invention when the transparent paper is cut and wrapped with a cigarette pack.

[0047] in:

[0048] 1—Transparent paper;

[0049] 2—Horseshoe-shaped cutting mechanism; 21—Horseshoe cutter;

[0050] 3—Paper feeding mechanism, 31—Paper feeding guide plate, 32—Paper feeding roller, 33—Paper feeding roller pad;

[0051] 4—Cut mechanism, 41—Transparent paper cutter, 42—Transparent paper cutter motor;

[0052] 5—Vacuum conveying mechanism; 51—Long conveyor belt of vacuum tank; 52—Short conveyor belt of vacuum tank; 53—Vacuum plate; 54—Main drive shaft of vacuum tank; 55—Passive drive shaft of vacuum tank.

[0053] 6—Extension mechanism, 61—Fan-shaped extension roller, 62—Extension shaft, 63—Extension roller motor, 64—Fan-shaped lever;

[0054] 7—Wrapping station. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0056] Example 1: A longitudinal conveying and cutting system for transparent paper in irregularly shaped strip boxes

[0057] This system is a longitudinal conveying and cutting system for the transparent paper 1 of irregularly shaped boxes. The system is set up vertically and cubically. The transparent paper 1 is conveyed from top to bottom, passing through the cutting station and the wrapping station 7 in sequence. The system is arranged from top to bottom as follows: horseshoe-shaped cutting mechanism 2, paper feeding mechanism 3, cutting mechanism 4, vacuum conveying mechanism 5, and stretching mechanism 6.

[0058] Main components and functions

[0059] 1. Horseshoe-shaped cutting mechanism 2: Laterally arranged in the upper area in front of the paper feeding guide 31. By rotating the horseshoe cutter 21 along its axis, it can regularly cut horseshoe-shaped cuts at specific points with equal intervals on the pull line of the transparent paper 1 passing downward along the paper feeding guide 31. These horseshoe-shaped cuts are the ends of the pre-embedded pull lines on the cigarette pack used for easy removal of the film. The horseshoe-shaped cutting mechanism 2 can accurately cut the required shape on the transparent paper 1.

[0060] 2. Paper feeding mechanism 3: Laterally arranged in the lower area in front of the paper feeding guide 31. The inner side of the paper feeding roller 32 contacts the surface of the transparent paper 1 passing downward along the paper feeding guide 31, and provides power by rotation to continue feeding the transparent paper 1 downward. The two ends of the paper feeding roller 32 are provided with outwardly expanding spiral textures, which helps to spread the transparent paper 1 flat and feed it downward.

[0061] 3. Cutting Mechanism 4: Located laterally below the paper feed roller 32. It includes a laterally arranged transparent paper cutter 41 that rotates around an axis, causing the blade to contact and cut the transparent paper 1. The cutting mechanism 4 is driven by a servo motor to ensure the accuracy and consistency of the cutting process.

[0062] 4. Vacuum conveying mechanism 5: Located below the cutting mechanism 4. It includes several vertically arranged long vacuum conveyor belts 51 and short vacuum conveyor belts 52. These conveyor belts can rotate downwards in a circular motion along the longitudinal direction. The short vacuum conveyor belts 52 are located between the two long vacuum conveyor belts 51. The vacuum plate 53 has a cavity or air passage inside, and vacuum holes connected to the inner cavity are formed on its surface to create a vacuum negative pressure zone. Several small holes are formed on the surfaces of the long vacuum conveyor belts 51 and short vacuum conveyor belts 52. These holes provide negative pressure adsorption for the transparent paper 1, causing it to adhere tightly to the conveyor belts inside the vacuum zone, thus allowing it to rotate with the conveyor belts and achieve constant-speed, directional downward conveying.

[0063] 5. Stretching Mechanism 6: Located in the lower front area of ​​the vacuum conveying mechanism 5. Two fan-shaped stretching rollers 61 are coaxially mounted on both sides, which can contact the two corner areas of the transparent paper 1 during rotation and form an outward expanding force. The stretching mechanism 6, through the oblique arrangement of the fan-shaped levers 64, forms an opposing figure-eight structure, which contacts the surface of the transparent paper 1 during rotation and provides a downward and outward force as it rotates, stretching and flattening the transparent paper 1.

[0064] 6. Wrapping Station 7: Located in the area formed by the long conveyor belts 51 of the vacuum trough on both sides, below the short conveyor belts 52 of the vacuum trough, and above the stretching mechanism 6. The upper part of the transparent paper 1 is fixed by the suction of the long conveyor belts 51 and 52 of the vacuum trough. The flattening and stretching operation occurs before cutting, and the vacuum trough disconnects the negative pressure suction, allowing the transparent paper 1 to hang naturally. The upper end is fixed by the conveyor rollers, and the lower part expands outward under the rotation of the two fan-shaped stretching rollers 61 to achieve flatness. Then, the negative pressure suction is restarted, and the transparent paper 1 is cut again, realizing a one-stage process. Wrapping Station 7 is the core area of ​​the entire system. Here, the transparent paper 1 is precisely positioned and stretched, and is taken away from the central area by the horizontally entering strip box, and then wrapped and laminated at the next station.

[0065] Example 2: To achieve better wrapping effect of the transparent paper 1 for irregularly shaped strip boxes and reduce the misalignment rate of the glass strip wire, this invention, based on the transparent paper 1 conveying and cutting function of the system in Example 1, also provides a control method for the longitudinal conveying system of the transparent paper 1 for irregularly shaped strip boxes. The control method specifically includes the following steps:

[0066] First, create a virtual spindle with a phase of 0°-360°;

[0067] Second, the host industrial computer reads the virtual spindle phase information;

[0068] Third, the host industrial computer controls the start and stop of each servo motor by obtaining the spindle phase information. The specific procedures include the following:

[0069] ① The transparent paper 1 is conveyed to the wrapping station 7. When the main shaft phase is 40°, the vacuum trough motor starts, driving the long conveyor belt 51 of the vacuum trough to move. As the long conveyor belt moves, the negative pressure belt obtains negative pressure. When the main shaft phase is 65°, the paper feeding roller 32 motor starts, conveying the transparent paper 1 downwards. As the transparent paper 1 moves downwards, it reaches the vacuum trough negative pressure belt, where the negative pressure belt sucks the transparent paper 1 onto the long conveyor belt 51 of the vacuum trough, and it moves downwards with the long conveyor belt 51 of the vacuum trough. When the main shaft phase reaches 275°, the paper feeding roller 32 stops moving, and the transparent paper 1 is conveyed downwards 280mm under the combined action of the paper feeding roller 32 and the vacuum trough, reaching the wrapping station 7. At the same time, when the main shaft phase is 60°, the horseshoe cutter 21 motor phase is 50°, and the horseshoe cutter 21 cuts the thread. During the process of the transparent paper 1 being conveyed to the wrapping station 7, the phase of the motor of the fan-shaped stretching roller 61 changes from 0° to 249°, and the fan-shaped stretching roller (61) enters the pre-stretching station.

[0070] ② Negative pressure release. When the spindle phase is 275°, the main industrial computer controls the solenoid valve to close, and the negative pressure in the vacuum tank is released.

[0071] ③ The fan-shaped stretching roller 61 stretches the transparent paper 1. As the main shaft phase moves from 275° to 325°, the fan-shaped stretching roller 61 moves from the pre-stretching position to stretch the transparent paper 1. As the main shaft phase moves from 325° to 360°, the fan-shaped stretching roller 61 presses the transparent paper 1 to ensure the flatness of the transparent paper 1 before packaging.

[0072] ④ The negative pressure belt regains negative pressure. When the spindle phase is 325°, the main industrial control computer controls the solenoid valve to open, and the vacuum tank negative pressure belt regains negative pressure, adsorbing the stretched transparent paper 1 onto the vacuum plate 53 to ensure the flatness of the transparent paper 1 before packaging.

[0073] ⑤ The transparent paper cutter 41 completes the cutting of the transparent paper 1. During the process of the spindle phase moving from 0° to 360°, the transparent paper cutter motor 42 also moves from 0° to 360°. When the spindle phase is at 360°, the transparent paper cutter 41 cuts the transparent paper 1, and the size of the cut glass is 328*280 mm (length*width).

[0074] ⑥ The pusher plate pushes the cigarette packs into the mold box to form the shape.

[0075] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A longitudinal conveying and cutting system for transparent paper in irregularly shaped strip boxes, characterized in that... The system is set up vertically in a cubic configuration. Transparent paper (1) is conveyed from top to bottom to the cutting station and the wrapping station (7). The system is arranged from top to bottom as follows: The horseshoe-shaped cutting mechanism (2) is arranged laterally in the upper area in front of the paper feeding guide (31). The horseshoe cutter (21) can cut the transparent paper (1) passing down along the paper feeding guide (31) into a horseshoe shape by rotating. The paper feeding mechanism (3) is arranged laterally in the lower area in front of the paper feeding guide (31). The inner side of the paper feeding roller (32) contacts the surface of the transparent paper (1) that passes downward along the paper feeding guide (31) and provides power to continue feeding downward by rotation. The cutting mechanism (4) is arranged laterally in the area below the paper feeding roller (32), including a transversely arranged transparent paper cutter (41). The transparent paper cutter (41) rotates around an axis, and the blade can contact the transparent paper (1) and cut it. The vacuum conveying mechanism (5) is located in the area below the cutting mechanism (4), including several long vacuum trough conveyor belts (51) and short vacuum trough conveyor belts (52) arranged vertically. The long vacuum trough conveyor belts (51) and short vacuum trough conveyor belts (52) can rotate downward in a circular motion in the longitudinal direction. The short vacuum trough conveyor belts (52) are located between the long vacuum trough conveyor belts (51) on both sides. The stretching mechanism (6) is arranged in the area in front of and below the vacuum conveying mechanism (5). Two fan-shaped stretching rollers (61) are coaxially installed on both sides. They can contact the two corner areas of the transparent paper (1) during rotation and form an outward expanding force. The wrapping station (7) is located in the area formed by the long conveyor belts (51) of the vacuum trough on both sides, the short conveyor belt (52) of the vacuum trough, and the stretching mechanism (6). The upper part of the transparent paper (1) is fixed by the adsorption of the long conveyor belt (51) and the short conveyor belt (52) of the vacuum trough, and the lower part is stretched outward by the rotation of the two fan-shaped stretching rollers (61) to achieve stretching and flatness.

2. The longitudinal conveying and cutting paper system according to claim 1, characterized in that, The vacuum delivery mechanism (5) includes: Vacuum plate (53) has an internal cavity or air channel, and vacuum holes connected to the internal cavity are opened on both sides and the top of the plate to form a vacuum groove negative pressure zone. The vacuum plate (53) is equipped with a vacuum tank main drive shaft (54) above it and a vacuum tank passive drive shaft (55) below it. The vacuum tank long conveyor belt (51) consists of two belts, with several small holes partially or completely opened on the surface. They are arranged longitudinally in the vacuum tanks on both sides of the vacuum plate (53) and are fitted on the vacuum tank main drive shaft (54) and the vacuum tank passive drive shaft (55). They move in a ring as the vacuum tank main drive shaft (54) rotates, and can adsorb the transparent paper (1) and move accordingly.

3. The longitudinal conveying and cutting paper system according to claim 2, characterized in that, There are at least three short conveyor belts (52) for the vacuum tank, which are installed longitudinally in the top area of ​​the vacuum plate (53). One end is installed on the passive drive shaft (55) of the vacuum tank, and the other end is installed on the follower roller in the slot opened in the upper part of the vacuum plate (53). Several small holes are also partially or completely opened on the short conveyor belts (52) of the vacuum tank. Below them is a square vacuum tank. The vacuum tank negative pressure belt provides negative pressure adsorption to the transparent paper (1) through the small holes.

4. The longitudinal conveying and cutting paper system according to claim 1, characterized in that, The paper feeding mechanism (3) includes a paper feeding roller (32) and a paper feeding roller pad roller (33) located behind the paper feeding roller (32). The transparent paper (1) passes between the paper feeding roller (32) and the paper feeding roller pad roller (33). It can generate conveying power with the rotation of the paper feeding roller (32) so that the transparent paper (1) is conveyed downward. The two ends of the paper feeding roller (32) are provided with outwardly expanding spiral textures for spreading the transparent paper (1) flat and conveying it downward.

5. The longitudinal conveying and cutting paper system according to claim 1, characterized in that, The cutting mechanism (4) includes a transparent paper cutter motor (42), which is installed on the side plate of the bracket and connected to the transparent paper cutter (41) through a transmission component. It can control the axial rotation of the transparent paper cutter (41) and can cut the transparent paper (1) laterally.

6. The longitudinal conveying and cutting paper system according to claim 1, characterized in that, The stretching mechanism (6) includes a stretching shaft (62) connected by a stretching roller motor (63). Two fan-shaped stretching rollers (61) are mounted on the stretching shaft (62), each including a fan-shaped lever (64) that rotates with the shaft. The two fan-shaped levers (64) are arranged obliquely to form a relative figure-eight structure, which can contact the surface of the transparent paper (1) during rotation and provide downward and outward force with rotation to stretch and flatten the transparent paper (1).

7. The longitudinal conveying and cutting paper system according to claim 1, characterized in that, The drive motors of the horseshoe-shaped cutting mechanism (2), paper feeding mechanism (3), cutter mechanism (4), vacuum conveying mechanism (5), and stretching mechanism (6) are all servo motors, and can start and stop their respective functions in sequence. The horseshoe-shaped cutting mechanism (2) can cut a horseshoe-shaped groove on the transparent paper (1) by rotating it; The drive motor of the paper feeding roller (32) is started, which can convey the transparent paper (1) downward; as the transparent paper (1) moves downward, the transparent paper (1) reaches the negative pressure belt of the vacuum tank; When the drive motor of the vacuum conveying mechanism (5) is started, it can adsorb the transparent paper (1) onto the long conveyor belt (51) and the short conveyor belt (52) of the vacuum tank and transport it downwards to the wrapping station (7), and stop after it reaches the station. After the transparent paper (1) arrives at the wrapping station (7), the negative pressure of the vacuum plate (53) is interrupted, and the negative pressure belt can release the negative pressure. At this time, the fan-shaped stretching roller (61) starts, which can press the two lower ends of the transparent paper (1) tightly and rub it downward and outward to flatten it. After the fan-shaped stretching roller (61) completes the stretching, it stops rotating. When the negative pressure of the vacuum plate (53) is restored, the negative pressure belt can obtain negative pressure, and the transparent paper (1) is flatly adsorbed on the vacuum plate (53). The transparent paper cutter (41) is started, and after rotating, the cutter blade cuts the transparent paper (1) and then resets.

8. A longitudinal conveying and paper cutting method based on the longitudinal conveying and paper cutting system according to any one of claims 1-7, characterized in that... Includes the following steps: Transparent paper (1) enters from above along the paper feeding guide plate (31), moves downward under the action of the paper feeding mechanism (3), and enters the vacuum conveying mechanism (5); in this interval, the horseshoe-shaped edge is cut by the horseshoe-shaped cutting mechanism (2) on the pull line; After entering the vacuum conveying mechanism (5), the transparent paper (1) spreads along the vacuum plate (53) under the adsorption and pulling action of the long conveyor belt (51) on both sides of the vacuum trough; When the bottom edge of the transparent paper (1) reaches the stretching mechanism (6), it stops, and the negative pressure adsorption of the vacuum tank long conveyor belt (51) is disconnected and adsorption is stopped. The fan-shaped stretching roller (61) produces a downward and outward stretching action on the two lower corners of the transparent paper (1), flattening the transparent paper (1) above the vacuum plate (53). Subsequently, the negative pressure adsorption of the long conveyor belt (51) in the vacuum tank is activated to adsorb the transparent paper (1) again. The cutting mechanism (4) cuts the transparent paper (1) and waits for the cigarette box to be wrapped to enter before entering the next station.

9. The longitudinal conveying and paper cutting method of the longitudinal conveying and paper cutting system according to claim 8, characterized in that... Includes the following steps: Step S1: Create a virtual spindle. Set a virtual spindle with a phase range of 0° to 360° as the time reference for the entire control process. The host industrial computer reads the phase information of the virtual spindle in real time and uses it as the basis for triggering subsequent actions. Step S2: When the main shaft phase reaches the first preset relative degree, the motor of the vacuum conveying mechanism (5) starts, driving the long conveyor belt (51) of the vacuum tank to move, and the negative pressure in the vacuum plate (53) starts, generating negative pressure in the vacuum tank negative pressure belt area of ​​the vacuum plate (53). Step S3: When the main shaft phase is the second preset relative degree, the horseshoe cutter (21) of the horseshoe cutting mechanism (2) cuts the pull line at the corresponding position of the transparent paper (1); Step S4: When the main shaft phase position is at the third preset relative degree, the motor of the paper feeding roller (32) starts and conveys the transparent paper (1) downward. As the transparent paper (1) moves downward, it comes to the vacuum tank negative pressure belt. The negative pressure passes through the air holes on the long conveyor belt (51) and the short conveyor belt (52) of the vacuum tank, adsorbs the transparent paper (1) that passes by, and causes the transparent paper (1) to move downward. Step S5: When the main shaft phase reaches the fourth preset relative degree, the paper feeding roller (32) stops moving, and the transparent paper (1) is conveyed downward to the wrapping station (7) under the combined action of the paper feeding mechanism (3) and the vacuum conveying mechanism (5); at this time, the negative pressure of the vacuum conveying mechanism (5) is released. Step S6: When the transparent paper (1) is conveyed to the wrapping station (7), the fan-shaped stretching roller (61) rotates so that the fan-shaped pusher (64) enters the pre-stretching station and contacts the transparent paper (1). As the contact point rotates, it forms a downward force to stretch and flatten the transparent paper (1). Step S7: After flattening, the negative pressure of the vacuum conveying mechanism (5) is restored and the transparent paper (1) is re-adsorbed, and the stretched transparent paper (1) is adsorbed onto the vacuum plate (53). Step S8: The transparent paper cutter (41) of the cutting mechanism (4) cuts the transparent paper (1) horizontally to cut out the whole transparent paper (1) to be wrapped; after the cut transparent paper (1) is used, steps S1 to S8 are repeated.

10. The longitudinal conveying and paper cutting method of the longitudinal conveying and paper cutting system according to claim 8, characterized in that... In the area above the vacuum conveying mechanism (5), there is a synchronous vacuum trough short conveyor belt (52). Several vacuum trough short conveyor belts (52) are evenly arranged vertically above the vacuum plate (53). They can synchronously adsorb the lower edge of the transparent paper (1) with the vacuum trough long conveyor belt (51) and synchronously move it horizontally downward to the wrapping station (7).

Images