Flexible plate gluing compound machine

Abstract

The invention belongs to the technical field of compound machines, and particularly relates to a flexible plate gluing compound machine which comprises a drying oven, a flexible plate gluing device, a first unwinding device, a winding device, a compound device and a second unwinding device are sequentially arranged below the drying oven, two cutters are arranged at each of unwinding openings of the first unwinding device and the second unwinding device, and the two cutters are symmetrically arranged up and down; and a cutter is arranged at a winding opening of the winding device. According to the flexible plate gluing compound machine, the first gluing roller and the second gluing roller rotate upwards in the opposite directions to drive glue in the glue groove to the position above the position between the first gluing roller and the second gluing roller, the glue is evenly arranged on the first gluing roller and the second gluing roller through continuous rotation, and then the glue is smeared on the third gluing roller through the second gluing roller; due to long-term continuous rotation and the fact that the third gluing roller is attached to the second gluing roller, glue can be rubbed on the third gluing roller, then a film is glued on the third gluing roller through the film pressing device, and gluing is even and stable.

Description

A flexographic printing plate laminating machine Technical Field

[0001] This invention belongs to the field of laminating machine technology, specifically relating to a flexographic laminating machine. Background Technology

[0002] Packaging film refers to paper used for packaging that is high in strength, low in moisture content, has low air permeability, is non-corrosive, has a certain degree of water resistance, and is aesthetically pleasing. Paper used for food packaging also requires hygiene, sterility, and freedom from contaminants and impurities. Ordinary packaging film has a single function. To increase the functionality of packaging film, functional layers are usually laminated with ordinary packaging film to form composite paper, thereby improving its temperature resistance. The lamination device is the device used for composite paper.

[0003] Currently, most laminating devices use a single gluing roller to apply glue to the packaging film. However, the glue application on a single roller is uneven, resulting in gaps where some areas have thicker glue and others thinner. This gaps allow airborne particles to easily adhere to the gaps, affecting the quality of the produced products. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a flexographic adhesive laminating machine that can make adhesive application uniform and stable.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a flexographic printing plate gluing and laminating machine, including an oven, with a flexographic printing plate gluing device, a first unwinding device, a rewinding device, a laminating device, and a second unwinding device arranged sequentially below the oven. Two cutters are provided at the unwinding openings of both the first and second unwinding devices, symmetrically arranged vertically. A cutter is provided at the rewinding opening of the rewinding device. The flexographic printing plate gluing device includes a support frame, a gluing roller assembly, and a glue tank. The gluing roller assembly is mounted on the support frame, and the glue tank is located below the gluing roller assembly. The gluing roller assembly covers... The device includes a first gluing roller, a second gluing roller, a third gluing roller, and a film presser. The first and second gluing rollers are rotatably mounted side-by-side on a support frame, with their lower ends immersed in a glue tank. The third gluing roller is rotatably mounted on the support frame, positioned above and in contact with the second gluing roller. The support frame is equipped with drive motors that drive the first, second, and third gluing rollers respectively. The film presser is mounted on the support frame, and there is a gap between the film pressing surface of the film presser and the third gluing roller for film output.

[0006] The film press includes a fixed rod, a rotating rod, an elastic frame, and a smooth steel sheet. The fixed rod is fixedly mounted on a support frame. The rotating rod is rotatably placed inside the fixed rod, and an adjusting motor that drives the rotating rod to rotate is rotatably mounted on the support frame. Multiple rotating columns are coaxially rotatably mounted on the outside of the fixed rod. Each rotating column has a connecting column that is fixedly connected to the rotating rod. The fixed rod has a clearance groove for the connecting column to slide. Connecting rods are rotatably mounted on the upper and lower ends of each rotating column. The connecting rods are rotatably connected to the elastic frame and pull the elastic frame layer into an arc shape. The smooth steel sheet is fixedly mounted on the elastic frame.

[0007] Guide rollers are rotatably mounted at both ends of the elastic frame.

[0008] The elastic frame is provided with elastic reinforcing ribs that are in close contact with the smooth steel sheets at the positions corresponding to multiple connecting rods.

[0009] The support frame is equipped with a lifting component below the glue tank.

[0010] The lifting assembly includes a support plate, a lifting cylinder, and multiple guide lifting columns. The support plate is slidably placed on a support frame. The lifting cylinder is installed below the support plate and fixedly installed on the ground. The multiple guide lifting columns are arranged around the lifting cylinder and are all fixedly connected to the bottom of the support plate.

[0011] The glue tank is equipped with handles on both sides symmetrically.

[0012] The support frame is equipped with four mounting seats, which are symmetrically arranged on both sides of the support frame in pairs. The first glue-applying roller is rotatably installed between two symmetrical mounting seats, and the second glue-applying roller is rotatably installed between the other two symmetrical mounting seats. A threaded hole is opened below the mounting seat, and a threaded post is threaded into the threaded hole. A glue scraper is connected between the threaded posts of the two symmetrical mounting seats, and the glue scraper is set to fit against the first glue-applying roller.

[0013] A fixed column is rotatably installed below the threaded column, and the scraper is fixedly installed on the fixed column. Baffles are provided on both sides of the scraper, and the baffles are connected to guide plates. The guide plates on both sides are inclined towards each other, and the distance between the baffles on both sides of the scraper is adapted to the inner diameter of the glue tank.

[0014] A discharge pipe is installed on one side of the glue tank, and a switch valve is installed on the discharge pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a flexographic coating and laminating machine, in which the glue in the glue tank is driven to the space between the first and second glue rollers by the upward and opposite rotation of the first and second glue rollers. Through continuous rotation, the glue is evenly placed on the first and second glue rollers, and then applied to the third glue roller by the second glue roller. Due to the long-term continuous rotation and the fact that the third glue roller and the second glue roller remain in contact, the glue will be smoothed on the third glue roller. Then, the film is applied to the third glue roller by the film presser, so that the glue application is uniform and stable.

[0016] 2. The present invention provides a flexographic laminating machine, which, when the film needs to be tensioned, can drive a rotating column to rotate by adjusting the motor-driven rotating rod. The rotating column then drives an elastic frame through a connecting rod. The elastic frame, through its own elasticity, causes the smooth steel sheet to open and pushes the film to be tensioned, thus enabling tension adjustment while pressing the film.

[0017] 3. The present invention discloses a flexographic laminating machine. After long-term use, the amount of glue in the glue tank will decrease. The glue tank can be raised by a lifting cylinder to compensate for the decrease in glue amount. When laminating different packaging films, the glue used is slightly different. When the glue needs to be replaced, the support plate can be driven by the lifting cylinder to lower the glue tank away from the first and second gluing rollers, and the glue tank can be directly replaced. Then the lifting cylinder is driven to reset, realizing quick glue replacement.

[0018] 4. In the flexographic laminating machine of the present invention, after the glue is replaced, there is still glue residue on the first and second glue rollers. The glue residue on the first and second glue rollers can be scraped off by installing a glue scraper and dripped into the glue tank for recycling. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the composite machine of the present invention; Figure 2 is a schematic diagram of the flexographic gluing device of the present invention; Figure 3 is a schematic diagram of the film press of the present invention; Figure 4 is a cross-sectional schematic diagram of the film press of the present invention; Figure 5 is a schematic diagram of the lifting assembly of the present invention; Figure 6 is a schematic diagram of the glue scraper of the present invention; Figure 7 is a schematic diagram of the glue tank descending and the glue scraper cleaning the glue in the flexographic gluing device of the present invention; Figure 8 is a schematic diagram of the glue scraper placed on the glue tank of the present invention; Figure 9 is an enlarged schematic diagram of the cooperation between the baffle plate and the inner wall of the glue tank of the present invention; Figure 10 is a schematic diagram of the film transport structure of the flexographic gluing device of the present invention.

[0020] The diagram shows the following markings: 1. Drying oven; 2. Flexographic printing plate gluing device; 201. Support frame; 202. Gluing roller assembly; 203. Glue tank; 204. First gluing roller; 205. Second gluing roller; 206. Third gluing roller; 207. Film press; 208. Fixed rod; 209. Rotating rod; 2010. Elastic frame; 2012. Smooth steel sheet; 2013. Rotating column; 2014. Connecting column; 2015. Connecting rod; 2016. Guide roller; 2017. 2018. Elastic reinforcing rib; 2019. Lifting assembly; 2020. Support plate; 2021. Lifting cylinder; 2022. Guide lifting column; 2023. Handle; 2024. Mounting base; 2025. Threaded column; 2026. Scraper strip; 2027. Fixing column; 2028. Baffle plate; 2029. Drain pipe; 2030. Switch valve; 3. First unwinding device; 4. Rewinding device; 5. Composite device; 6. Second unwinding device. Detailed Implementation

[0021] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0022] As shown in Figures 1-10, this embodiment provides a flexographic laminating machine, including an oven 1. Below the oven 1, a flexographic laminating device 2, a first unwinding device 3, a winding device 4, a laminating device 5, and a second unwinding device 6 are arranged in sequence. The unwinding openings of the first unwinding device 3 and the second unwinding device 6 are each equipped with two cutters, which are symmetrically arranged vertically. The winding opening of the winding device 4 is equipped with a cutter. During lamination, the first unwinding device 3 unwinds the film, which passes through the flexographic laminating device 2 and is then transferred to the oven 1 and onto the laminating device 5. The second unwinding device 6 unwinds the film and transfers it onto the laminating device 5. After lamination by the laminating device 5, the film is wound up by the winding device 4.

[0023] Specifically, the flexographic gluing device 2 includes a support frame 201, a gluing roller assembly 202, and a glue tank 203. The gluing roller assembly 202 is mounted on the support frame 201, and the glue tank 203 is located below the gluing roller assembly 202. The gluing roller assembly 202 includes a first gluing roller 204, a second gluing roller 205, a third gluing roller 206, and a film press 207. The first gluing roller 204 and the second gluing roller 205 are mounted side by side and rotate on the support frame 201. The lower end of roller 205 is immersed in glue tank 203. The third glue roller 206 is rotatably mounted on support frame 201 and located above the second glue roller 205 and attached to the second glue roller 205. The support frame 201 is equipped with drive motors that drive the first glue roller 204, the second glue roller 205 and the third glue roller 206 respectively. The film presser 207 is mounted on support frame 201, and there is a gap between the film pressing surface of the film presser 207 and the third glue roller 206 for film output. The first and second gluing rollers 204 and 205 rotate upwards and towards each other, causing the glue in the glue tank 203 to be carried to the area above the space between the first and second gluing rollers 204 and 205. Through continuous rotation, the glue is evenly distributed on the first and second gluing rollers 204 and 205, and then spread onto the third gluing roller 206 by the second gluing roller 205. Due to the long-term continuous rotation and the fact that the third gluing roller 206 and the second gluing roller 205 remain in contact, the glue is smoothed out on the third gluing roller 206. Finally, the film is applied to the third gluing roller 206 by the film press 207, resulting in uniform and stable gluing.

[0024] Furthermore, the film press 207 includes a fixed rod 208, a rotating rod 209, an elastic frame 2010, and a smooth steel sheet 2012. The fixed rod 208 is fixedly mounted on the support frame 201. The rotating rod 209 is rotatably positioned inside the fixed rod 208, and an adjusting motor for driving the rotating rod 209 is rotatably mounted on the support frame 201. Multiple rotating columns 2013 are coaxially rotatably mounted outside the fixed rod 208. Each rotating column 2013 has a connecting column 2014 fixedly connected to the rotating rod 209. The fixed rod 208 has a clearance groove for the connecting column 2014 to slide. Connecting rods 2015 are rotatably mounted at the upper and lower ends of the rotating columns 2013, respectively. The connecting rods 2015 are rotatably connected to the elastic frame 2010 and pull the elastic frame 2010 into an arc shape. The smooth steel sheet 2012 is fixedly mounted on the elastic frame 2010. Specifically, guide rollers 2016 are rotatably mounted at both ends of the elastic frame 2010. The membrane is stably guided by guide rollers 2016 at both ends. When the membrane needs to be tensioned, the rotating rod 209 driven by the motor can be rotated to drive the rotating column 2013 to rotate. The rotating column 2013 drives the elastic frame 2010 through the connecting rod 2015. The elastic frame 2010 then uses its own elasticity to open the smooth steel sheet 2012 and push the membrane to be tensioned, thus achieving tension adjustment while pressing the membrane.

[0025] Furthermore, the elastic frame 2010 is provided with elastic reinforcing ribs 2017 at positions corresponding to the multiple connecting rods 2015, which are in close contact with the smooth steel sheet 2012. By providing multiple elastic reinforcing ribs 2017, the overall strength of the elastic frame 2010 is increased, and the connection stability with the smooth steel sheet 2012 is enhanced.

[0026] Furthermore, a lifting assembly 2018 is installed below the glue tank 203 on the support frame 201. Specifically, the lifting assembly 2018 includes a support plate 2019, a lifting cylinder 2020, and multiple guide lifting columns 2021. The support plate 2019 is slidably placed on the support frame 201. The lifting cylinder 2020 is installed below the support plate 2019 and fixedly installed on the ground. The multiple guide lifting columns 2021 are arranged around the lifting cylinder 2020 and are all fixedly connected to the lower part of the support plate 2019. The support plate 2019 has multiple limiting holes, and the bottom of the glue tank 203 has a limiting block that is inserted and cooperates with the multiple limiting holes. After prolonged use, the amount of adhesive in the adhesive tank 203 will decrease. This decrease can be compensated by lifting the support plate 2019 to raise the adhesive tank 203 via the lifting cylinder 2020. Furthermore, the adhesive used for laminating different packaging films is slightly different. When it is necessary to replace the adhesive, the support plate 2019 can be driven by the lifting cylinder 2020 to lower the adhesive tank 203 away from the first and second glue rollers 204 and 205, and the adhesive tank 203 can be replaced directly. Then, the lifting cylinder 2020 is driven to reset, achieving quick adhesive replacement.

[0027] Furthermore, handles 2022 are installed on both symmetrical sides of the glue tank 203. The glue tank 203 can be removed and moved for replacement using the handles 2022.

[0028] Furthermore, four mounting seats 2023 are installed on the support frame 201, and the four mounting seats 2023 are symmetrically arranged on both sides of the support frame 201 in pairs. The first glue-applying roller 204 is rotatably installed between two symmetrical mounting seats 2023, and the second glue-applying roller 205 is rotatably installed between the other two symmetrical mounting seats 2023. A threaded hole is opened at the bottom of the mounting seat 2023, and a threaded post 2024 is threaded into the threaded hole. A scraper strip 2025 is connected between the threaded posts 2024 of the two symmetrical mounting seats 2023. The scraper strip 2025 is set to fit against the first glue-applying roller 204. Specifically, the scraper strip 2025 located below the first glue-applying roller 204 fits against the bottom of the first glue-applying roller 204, and the scraper strip 2025 located below the second glue-applying roller 205 fits against the bottom of the second glue-applying roller 205. After the glue is replaced, there is still glue residue on the first glue roller 204 and the second glue roller 205. The glue can be scraped off by installing the glue scraper 2025 and rotating the first glue roller 204 and the second glue roller 205, and dripping into the glue tank 203 for recycling.

[0029] Furthermore, a fixing post 2026 is rotatably installed below the threaded post 2024, and the glue scraper 2025 is fixedly installed on the fixing post 2026. Baffle plates 2027 are provided on both sides of the glue scraper 2025, and the baffle plates 2027 are connected to guide plates 2028. The guide plates 2028 on both sides are inclined towards each other, and the distance between the baffle plates 2027 on both sides of the glue scraper 2025 is adapted to the inner diameter of the glue tank 203. The threaded post 2024 can be quickly connected or disassembled, and the flow direction of the glue is limited by the baffle plates 2027 and guided by the guide plates 2028. When not in use, the baffle plates 2027 can be laid flat so that they respectively adhere to the two inner sidewalls of the glue tank 203 to form a locking fixation.

[0030] Furthermore, a discharge pipe 2029 is installed on one side of the glue tank 203, and a switch valve 2030 is installed on the discharge pipe 2029. The opening and closing of the discharge pipe 2029 can be controlled by the switch valve 2030 to discharge the glue in the glue tank 203.

[0031] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A flexographic printing plate laminating machine, characterized in that: The device includes an oven, below which are arranged sequentially a flexographic coating device, a first unwinding device, a rewinding device, a laminating device, and a second unwinding device. Both the first and second unwinding devices have two cutters at their unwinding openings, symmetrically arranged vertically. The rewinding device has a cutter at its rewinding opening. The flexographic coating device includes a support frame, a coating roller assembly, and a glue tank. The coating roller assembly is mounted on the support frame, and the glue tank is located below the coating roller assembly. The coating roller assembly includes a first coating roller, a second coating roller, a third coating roller, and a film press. The first and second coating rollers are rotatably mounted side-by-side on the support frame, with their lower ends immersed in the glue tank. The third coating roller is rotatably mounted on the support frame, positioned above and in contact with the second coating roller. The film press is equipped with drive motors that drive the first, second, and third gluing rollers respectively. The film press is mounted on a support frame, and there is a gap between the film pressing surface of the film press and the third gluing roller for film output. The film press includes a fixed rod, a rotating rod, an elastic frame, and a smooth steel sheet. The fixed rod is fixedly mounted on the support frame. The rotating rod is rotatably placed inside the fixed rod, and an adjusting motor that drives the rotating rod to rotate is rotatably mounted on the support frame. Multiple rotating columns are coaxially rotatably mounted on the outside of the fixed rod. Each rotating column has a connecting column that is fixedly connected to the rotating rod. The fixed rod has a clearance groove for the connecting column to slide. Connecting rods are rotatably mounted on the upper and lower ends of each rotating column. The connecting rods are rotatably connected to the elastic frame and pull the elastic frame layer into an arc shape. The smooth steel sheet is fixedly mounted on the elastic frame.

2. The flexographic laminating machine according to claim 1, characterized in that: Guide rollers are rotatably mounted at both ends of the elastic frame.

3. The flexographic laminating machine according to claim 1, characterized in that: The elastic frame is provided with elastic reinforcing ribs that are in close contact with the smooth steel sheets at the positions corresponding to multiple connecting rods.

4. The flexographic laminating machine according to claim 1, characterized in that: The support frame is equipped with a lifting component below the glue tank.

5. A flexographic printing plate laminating machine according to claim 4, characterized in that: The lifting assembly includes a support plate, a lifting cylinder, and multiple guide lifting columns. The support plate is slidably placed on a support frame. The lifting cylinder is installed below the support plate and fixedly installed on the ground. The multiple guide lifting columns are arranged around the lifting cylinder and are all fixedly connected to the bottom of the support plate.

6. The flexographic laminating machine according to claim 1, characterized in that: The glue tank is equipped with handles on both sides symmetrically.

7. A flexographic laminating machine according to claim 1, characterized in that: The support frame is equipped with four mounting seats, which are symmetrically arranged on both sides of the support frame in pairs. The first glue-applying roller is rotatably installed between two symmetrical mounting seats, and the second glue-applying roller is rotatably installed between the other two symmetrical mounting seats. A threaded hole is opened below the mounting seat, and a threaded post is threaded into the threaded hole. A glue scraper is connected between the threaded posts of the two symmetrical mounting seats, and the glue scraper is set to fit against the first glue-applying roller.

8. A flexographic printing plate laminating machine according to claim 7, characterized in that: A fixed column is rotatably installed below the threaded column, and the scraper is fixedly installed on the fixed column. Baffles are provided on both sides of the scraper, and the baffles are connected to guide plates. The guide plates on both sides are inclined towards each other, and the distance between the baffles on both sides of the scraper is adapted to the inner diameter of the glue tank.

9. A flexographic printing plate laminating machine according to claim 1, characterized in that: A discharge pipe is installed on one side of the glue tank, and a switch valve is installed on the discharge pipe.

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