Self-adhesive full-gum spring festival scrolls adopting environment-friendly adhesive and preparation process of spring festival scrolls

Abstract

The invention relates to a self-adhesive full-gum spring festival scrolls adopting an environment-friendly adhesive and a preparation process of the spring festival scrolls, and belongs to the technical field of spring festival scrolls. The spring festival scroll comprises printing paper, a composite pearlized film, a glue layer and release paper, the composite pearlized film is sprayed on the printing paper to form a protective layer, and the release paper is bonded to the bottom of the printing paper through the glue layer. The preparation process comprises the steps of spraying and drying the composite pearlized film, spraying glue in a wave shape, pressing a paper separating roller and a paper printing roller, cutting and forming, and separating leftover materials. According to the preparation process, a workbench, a pressing roller, a spraying mechanism, a cutting mechanism and a separating assembly are included, the spraying mechanism drives a spraying head to reciprocate through a cam to achieve wavy spraying, and the cutting mechanism is in transmission connection with the pressing roller to achieve synchronous cutting. The problems that traditional spring festival scrolls are poor in protection performance, inconvenient to paste and low in production efficiency are solved, and the spring festival scrolls have the advantages of being waterproof, dampproof, firm in pasting and high in production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of Spring Festival couplets, and relates to a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive and its preparation process. Background Art

[0002] As an important carrier of traditional Chinese folk culture, Spring Festival couplets carry people's good expectations and blessings for the new year. They are widely pasted on doorways during the Spring Festival, with profound cultural connotations and a broad mass base. Traditional Spring Festival couplets are usually printed on ordinary paper. When pasting Spring Festival couplets, users need to apply glue by themselves, which is inconvenient to operate and easily dirties hands. In addition, the pasting method of traditional Spring Festival couplets is not firm enough. In case of bad weather, such as strong wind, rainfall, etc., the Spring Festival couplets are likely to fall off, affecting the festival atmosphere. Moreover, the protective performance of traditional Spring Festival couplets is poor. The printed paper is easily eroded by the external environment, such as moisture, sunlight, etc., resulting in the fading and damage of Spring Festival couplets and a short service life.

[0003] In terms of the manufacturing process, the manufacturing process of traditional Spring Festival couplets is relatively cumbersome, requiring different equipment for processing, with low automation. Generally, manual or simple machinery is used for operations such as cutting and pasting, resulting in low production efficiency and difficulty in meeting the large-scale market demand. At the same time, during the pasting process of the release paper and the printed paper, the application of glue is often not uniform enough, easily resulting in uneven surfaces of Spring Festival couplets due to excessive glue, or insecure pasting of Spring Festival couplets due to insufficient glue, affecting the overall quality and use effect of Spring Festival couplets.

[0004] Therefore, we propose a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive and its preparation process to solve the above-mentioned problems. Summary of the Invention

[0005] In view of this, in order to solve the problems of using manual or simple machinery for operations such as cutting and pasting, resulting in low production efficiency and difficulty in meeting the large-scale market demand, and at the same time, during the pasting process, the application of glue is often not uniform enough, easily resulting in uneven surfaces of Spring Festival couplets due to excessive glue, or insecure pasting of Spring Festival couplets due to insufficient glue, affecting the overall quality and use effect of Spring Festival couplets, the present invention provides a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive and its preparation process.

[0006] To achieve the above object, the present invention provides the following technical solution: A self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive, including a Spring Festival couplet body, wherein the Spring Festival couplet body is composed of a printed paper, a composite pearlescent film, a glue layer, and a release paper. The composite pearlescent film is sprayed on the printed paper to form a protective layer, and the release paper is bonded to the bottom of the printed paper through the glue layer and can be torn off;

[0007] Wherein, the composite pearlescent film is a biaxially oriented polypropylene pearlescent film with a thickness of 12-18 μm, and the glue layer is an environmentally friendly water-based acrylic pressure-sensitive adhesive with a coating thickness of 20-30 μm.

[0008] A process for preparing spring festival couplets, used for preparing the above spring festival couplets, comprises the following steps:

[0009] S1. Spray the composite pearlescent film onto the printed paper using a spraying device, and roll it up after drying at 60-80°C;

[0010] S2, spraying the glue in the form of wavy lines on the surface of the paper release roller using the preparation process;

[0011] S3, conveying the paper release roller and the paper printing roller at the same time, and pressing the paper release roller and the paper printing roller coated with glue during the conveying process;

[0012] S4, cutting the pressed materials into the shape of the spring festival couplet body;

[0013] S5. Separate the cut scraps on both sides from the main body of the Spring Festival couplets in the middle.

[0014] A preparation process for Spring Festival couplets, further comprising:

[0015] A workbench, with a first rotating seat and a second rotating seat on both sides thereof, respectively, the first rotating seat and the second rotating seat respectively fix the paper-leaving roller and the printing roller through an air shaft; a pressure roller, which is installed on the top of the workbench through a third rotating seat and is driven by a motor; a spraying mechanism, including a plurality of nozzles arranged on a movable plate, the movable plate is slidably connected to the workbench through a sliding rod, and the nozzles are reciprocated left and right through a driving assembly; a cutting mechanism, including a first knife roller and a second knife roller, which are connected to the pressure roller through a chain transmission; a separation assembly, including a moving block in a slide groove, and the moving block is linked to the first knife roller through a push rod.

[0016] As a further improvement of the above technical solution:

[0017] The spraying mechanism also includes:

[0018] The first fixed seat is fixed to one side of the workbench; the nozzle is connected to the multiple nozzles; the glue tank is connected to the nozzle through the pump body; wherein the movable plate is elastically connected to the first fixed seat and the second rotating seat through the first spring.

[0019] The drive assembly comprises:

[0020] Two sets of second fixed seats are fixed on the top of the workbench; a driving rod is slidably arranged between the second fixed seats and elastically connected through a second spring; a driving plate connects the two driving rods, and a wave tooth is arranged on its side to cooperate with the nozzle; a cam is fixed on the outer wall of the pressure roller and contacts the driving rod.

[0021] The cutting mechanism further includes:

[0022] A fourth rotating seat is provided on both sides of the workbench; a first sprocket is fixed to the ends of the first cutter roller and the second cutter roller; a second sprocket is fixed to the end of the pressure roller; a guide wheel is rotatably provided on one side of the fourth rotating seat; wherein, the chain is engaged with the outer walls of the guide wheel, the first sprocket and the second sprocket.

[0023] The separating assembly further includes: a connecting seat fixed to the top of the moving block; a pressing plate rotatably connected to the connecting seat through a rotating shaft and provided with a reset force by a torsion spring; a pulling rope connecting the pressing plate and the push rod; an eccentric ring fixed to the outer wall of the first cutter roller and connected to the push rod through a bearing.

[0024] It further includes a fixing plate which is arranged between the pump body and the second rotating seat, and a waist-shaped hole is opened at the top thereof, and the nozzle is located in the waist-shaped hole.

[0025] In step S2, the glue is sprayed in a wavy spraying manner, the spraying pressure is 0.2 - 0.3 MPa, and the spraying speed is 30 - 50 m / min.

[0026] In step S3, the pressing pressure is 0.3 - 0.5 MPa, and the pressing temperature is 40 - 50 °C.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. For a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive disclosed by the present invention, a protective layer is formed by spraying a composite pearlescent film on the printing paper, effectively enhancing the protection ability of the Spring Festival couplet. The composite pearlescent film can resist the erosion of the external environment, such as waterproof, moisture-proof, anti-ultraviolet, etc., greatly extending the service life of the Spring Festival couplet, enabling it to maintain a good appearance and quality even in complex environments such as outdoors. Compared with traditional Spring Festival couplets, it is less likely to fade and break;

[0029] 2. For a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive disclosed by the present invention, through the self-adhesive full-back glue design using an environmentally friendly adhesive, it not only meets the current environmental protection requirements but also greatly facilitates the use of users. The environmentally friendly adhesive is harmless to the human body and the environment. At the same time, the self-adhesive full-back glue makes the pasting of the Spring Festival couplet more convenient, eliminating the need for additional pasting tools such as glue. Users can easily complete the pasting of the Spring Festival couplet, improving the user experience;

[0030] 3. For the preparation process in the preparation process of a Spring Festival couplet disclosed by the present invention, in the spraying mechanism, the rotation of the pressure roller drives the rotation of the cam, and then drives the nozzle to reciprocate left and right to achieve wavy spraying, which can evenly spray the glue on the surface of the release paper roller. The uniform glue spraying ensures that in the subsequent pressing process, the glue can be evenly dispersed between the printing paper and the release paper, making the bonding of the Spring Festival couplet more firm and improving the product quality;

[0031] 4. The preparation process of the spring festival couplets disclosed in the present invention uses the first knife roller and the second knife roller to cut the pressed paper release roller and the printing paper roller, and at the same time, through the cooperation of the eccentric ring, the push rod, the pull rope and other components, the automatic separation of the scraps on both sides and the middle spring festival couplet body is realized, which simplifies the production process, reduces the production process, and further improves the production efficiency.

[0032] In terms of preparation technology, the present invention adopts specific preparation technology and process steps to achieve efficient automation in the preparation of spring festival couplets. The spraying mechanism drives the nozzle to move back and forth left and right to perform wave-shaped spraying through the driving component, thereby ensuring that the glue is sprayed evenly and accurately on the surface of the paper release roller, thereby improving the glue coating quality; the cutting mechanism is connected to the pressure roller in a transmission manner, and while cutting, the separation component automatically separates the cut scraps on both sides from the spring festival couplet body in the middle through the coordinated action of components such as an eccentric ring, a push rod, and a pull rope, thereby greatly improving production efficiency and reducing labor costs.

[0033] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of a self-adhesive spring festival couplet with full adhesive backing using an environmentally friendly adhesive according to the present invention;

[0036] Figure 2 It is a schematic cross-sectional structure diagram of a self-adhesive spring festival couplet with full adhesive backing using an environmentally friendly adhesive according to the present invention;

[0037] Figure 3 It is a schematic diagram of the three-dimensional structure of a spraying device in a preparation process of Spring Festival couplets of the present invention;

[0038] Figure 4 A schematic diagram of the three-dimensional structure of a spraying device in a process for preparing spring festival couplets according to the present invention from another perspective;

[0039] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0040] Figure 6 It is a schematic diagram of the installation structure of the spray head and guide frame of the spraying equipment in the preparation process of the Spring Festival couplets of the present invention;

[0041] Figure 7 Schematic diagram of the installation structure of the drive board and the drive rod of the spraying device in a preparation process of Spring Festival couplets according to the present invention;

[0042] Figure 8 Schematic diagram of the installation structure of the pressure roller of the spraying device in a preparation process of Spring Festival couplets according to the present invention;

[0043] Figure 9 Schematic diagram of the installation structure of the knife roller of the spraying device in a preparation process of Spring Festival couplets according to the present invention;

[0044] Figure 10 is Figure 9 Schematic diagram of the enlarged structure of part B in;

[0045] Figure 11 Schematic diagram of the structure of the pressing plate and the moving block of the spraying device in a preparation process of Spring Festival couplets according to the present invention.

[0046] Reference numerals: 1, Spring Festival couplet body; 2, printing paper; 3, composite pearlescent film; 4, glue layer; 5, release paper; 6, workbench; 7, first rotating seat; 8, second rotating seat; 9, air shaft; 10, paper separating roller; 11, first fixing seat; 12, spray pipe; 13, glue water tank; 14, pump body; 15, printing paper roller; 16, pressure roller; 17, first knife roller; 18, nozzle; 19, third rotating seat; 20, motor; 21, fourth rotating seat; 22, second knife roller; 23, guide wheel; 24, first sprocket; 25, second sprocket; 26, chain; 27, drive board; 28, fixing plate; 29, waist-shaped hole; 30, moving plate; 31, first spring; 32, sliding rod; 33, wave teeth; 34, second fixing seat; 35, drive rod; 36, limit ring; 37, second spring; 38, cam; 39, chute; 40, moving block; 41, pressing plate; 42, push rod; 43, eccentric ring; 44, bearing; 45, connecting seat; 46, rotating shaft; 47, connecting block; 48, pulling rope; 49, torsion spring. Detailed implementation manners

[0047] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0048] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than physical drawings, and should not be construed as a limitation on the present invention; for better illustration of the embodiments of the present invention, some components in the attached drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0049] In the attached drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0050] Embodiment 1

[0051] As Figure 1 - Figure 2 shown, a self-adhesive full-back glue Spring Festival couplet using an environmentally friendly adhesive includes a Spring Festival couplet body 1, and its structure from top to bottom includes a composite pearlescent film 3, a printing paper 2, a glue layer 4, and a release paper 5 in sequence.

[0052] Printing paper 2: Select high-quality coated paper or matte paper with a thickness of 80 - 120 g / m 2 , and the surface is pretreated to improve the ink adhesion. The front of the printing paper 2 is printed with Spring Festival couplet characters and patterns through UV printing process to ensure bright colors and strong weather resistance.

[0053] Composite pearlescent film 3: Use a biaxially oriented polypropylene (BOPP) pearlescent film with a thickness of 12 - 18 μm, and evenly cover the back of the printing paper 2 through a spraying process. The spraying equipment uses a precision atomizing spray gun, and the spraying pressure is controlled at 0.2 - 0.3 MPa, and the film layer thickness error does not exceed ±1 μm. The composite pearlescent film 3 forms a protective layer, which can effectively block water vapor, ultraviolet rays and mechanical friction, and extend the service life of the Spring Festival couplet.

[0054] Glue layer 4: Select an environmentally friendly water-based acrylic pressure-sensitive adhesive with a solid content of 45 - 55% and a viscosity of 800 - 1200 mPa·s. The glue is evenly applied to the surface of the release paper 5 through a spraying mechanism, and the coating thickness is 20 - 30 μm, and a highly viscous and removable glue layer is formed after drying.

[0055] Release paper 5: Use a single-sided silicone release paper with a grammage of 80 - 100 g / m 2, the release force is controlled at 15 - 25 g / 25 mm. The release paper 5 is bonded to the bottom of the printing paper 2 through the glue layer 4, and can be easily torn off during use without leaving residual glue.

[0056] A preparation process for Spring Festival couplets, used to prepare the above-mentioned Spring Festival couplets, including the following steps:

[0057] S1. Composite pearlescent film spraying and drying:

[0058] Install the printing paper 2 on the unwinding device and transport it to the spraying station through the guide roller;

[0059] The spraying equipment uses a reciprocating spray gun, the spraying width matches the width of the printing paper 2, and the spraying speed is 30 - 50 m / min;

[0060] The sprayed composite pearlescent film 3 passes through a hot air circulation drying tunnel, the drying temperature is 60 - 80 °C, and the drying time is 8 - 12 seconds to ensure complete curing of the film layer;

[0061] The dried composite material is wound on a temporary roller, and the winding tension is controlled at 15 - 20 N.

[0062] S2. Glue spraying:

[0063] Use the spraying mechanism in the preparation process to spray the glue on the upper surface of the release paper roller (10) in a wavy line, and the coating thickness is 20 - 30 μm.

[0064] S3. Laminating process:

[0065] Use the pressing roller in the preparation process for pressing. The hardness of the rubber roller is 60 - 70 Shore A, the pressing pressure is 0.3 - 0.5 MPa, and the pressing temperature is 40 - 50 °C;

[0066] After pressing, a double-layer composite material is formed, and the release paper 5 and the printing paper 2 are tightly bonded through the glue layer 4.

[0067] S4. Cutting and forming

[0068] Use the cutting mechanism in the preparation process for cutting. The cutter roller is designed in the contour shape of the Spring Festival couplet body 1, and the cutting accuracy is ±0.2 mm to ensure no burrs on the edge;

[0069] The cut product retains the side scraps on both sides for easy subsequent separation.

[0070] S5. Side scrap separation and finished product collection

[0071] Use the separation component in the preparation process to separate the side scraps of the release paper roller 10 and the printing paper roller 15 after cutting on both sides from the Spring Festival couplet body 1 in the middle;

[0072] The separated Spring Festival couplet body 1 is conveyed to the finished product collecting tray through a conveyor belt, and the side materials are recycled through a waste collecting box;

[0073] The finished product collecting tray is equipped with a counter, and each tray collects 50 - 100 Spring Festival couplet bodies 1.

[0074] Embodiment 2

[0075] As Figure 3 - Figure 11 shown, the preparation process includes a workbench 6. The workbench 6 serves as the support platform for the entire device, and its bottom is provided with support legs to ensure the stability of the device. One side of the workbench 6 is bolted with a first rotating seat 7, and a pneumatic shaft 9 is connected to the first rotating seat 7 through a resistance shaft for fixing the paper separating roller 10. The top of the Spring Festival couplet body 1 is bolted with a second rotating seat 8, and a pneumatic shaft 9 is also connected to the second rotating seat 8 through a resistance shaft for fixing the printing paper roller 15.

[0076] Two third rotating seats 19 are bolted to the top of the workbench 6. A pressure roller 16 is rotatably arranged between the two third rotating seats 19 and inside the workbench 6 through a bearing 44. One side of one of the third rotating seats 19 is bolted with a motor 20, and the output end of the motor 20 is fixedly connected to the corresponding pressure roller 16. When the motor 20 is started, it can drive the pressure roller 16 to rotate, thereby driving the paper separating roller 10 and the printing paper roller 15 to move between the two pressure rollers 16. A certain pressure is formed between the two pressure rollers 16 for pressing the paper separating roller 10 and the printing paper roller 15 together.

[0077] The spraying mechanism is arranged on one side of the second rotating seat 8 and is used in cooperation with the upper pressure roller 16. Specifically, the spraying mechanism includes a first fixing seat 11 bolted to one side of the workbench 6. The first fixing seat 11 and one side of the second rotating seat 8 are both slidably penetrated with a sliding rod 32, and the same moving plate 30 is welded between the two sliding rods 32. The outer wall of the sliding rod 32 is sleeved with a first spring 31, and the two ends of the first spring 31 are respectively abutted against the two sides of the moving plate 30 and the inner sides of the first fixing seat 11 and the second rotating seat 8 through connecting seats. A plurality of nozzles 18 are fixedly penetrated through the top of the moving plate 30, and the tops of the plurality of nozzles 18 are connected to the same spray pipe 12. The elastic coefficient of the first spring 31 is between 3 - 8 N / mm to ensure that the nozzles 18 move flexibly and reset accurately.

[0078] A glue tank 13 is arranged below the workbench 6. One side of the glue tank 13 is bolted with a pump body 14, and both ends of the pump body 14 are respectively communicated with the glue tank 13 and the spray pipe 12 through pipelines. When the pump body 14 is started, it can pump out the glue in the glue tank 13, convey it to the spray pipe 12 through the pipeline, and then spray it out from the nozzles 18.

[0079] In order to achieve wavy spraying, a driving assembly for cooperating with the pressure roller 16 is provided on the top of the workbench 6. The driving assembly includes two groups of second fixing seats 34 bolted to the top of the workbench 6, and a driving rod 35 is slidably arranged through between each group of second fixing seats 34. An outer wall of the pressure roller 16 is fixedly sleeved with a cam 38 that abuts against the driving rod 35. When the pressure roller 16 rotates, the cam 38 also rotates. The other ends of the two driving rods 35 are welded to the same driving plate 27, and a wavy tooth 33 for cooperating with the nozzle 18 is formed on one side of the driving plate 27. An outer wall of the driving rod 35 is fixedly sleeved with a limiting ring 36, and a second spring 37 is sleeved on the outer wall of the driving rod 35. Two ends of the second spring 37 respectively abut against the mutually close sides of the limiting ring 36 and the second fixing seat 34 through a connecting seat 45. The elastic coefficient of the second spring 37 is between 8 - 15 N / mm to overcome the inertia of the driving rod 35 and the driving plate 27 and achieve stable and reliable reciprocating motion.

[0080] When the convex part of the cam 38 contacts the driving rod 35, it can push the driving rod 35 to move. The movement of the driving rod 35 can drive the driving plate 27 to move and compress the second spring 37. During the movement of the driving plate 27, it can use the wavy tooth 33 to push the nozzle 18 to move to one side. The movement of the nozzle 18 can push the moving plate 30 to move and stretch or compress the corresponding first spring 31. When the convex part of the cam 38 moves away from the driving rod 35, the driving rod 35 can reset and move under the action of the second spring 37, causing the driving plate 27 to move away from the nozzle 18. At this time, the nozzle 18 can reset and move under the action of the two first springs 31 to form a curved movement, so that the glue can be sprayed on the release paper roller 10 in the form of a wavy line. During the pressing process, the glue can be evenly coated between the printing paper 2 and the release paper 5.

[0081] In addition, a fixing plate 28 is bolted between the first fixing seat 11 and the second rotating seat 8. A waist-shaped hole 29 is formed in the top of the fixing plate 28, and multiple nozzles 18 are all located in the waist-shaped hole 29. The waist-shaped hole 29 can play a role in guiding and positioning the movement of the nozzle 18. When not working, the nozzle 18 is located on one side of the top of the wavy tooth 33, making it convenient to control the movement direction of the nozzle 18.

[0082] The cutting mechanism is arranged on the workbench 6 and is in driving connection with the pressure roller 16. Specifically, the cutting mechanism includes fourth rotating seats 21 bolted to both sides of the workbench 6. A first cutter roller 17 and a second cutter roller 22 are rotatably arranged between the two fourth rotating seats 21 through bearings 44. Fixed sleeves of first sprockets 24 are provided on the outer walls of one ends of the first cutter roller 17 and the second cutter roller 22. A fixed sleeve of a second sprocket 25 is provided on the outer wall of one end of the upper pressure roller 16. Two guide wheels 23 are rotatably arranged on one side of the fourth rotating seat 21 through bearings 44. The same chain 26 is meshed and driven on the outer walls of the two guide wheels 23, the first sprockets 24 and the second sprocket 25.

[0083] When the motor 20 drives the pressure roller 16 to rotate, the first cutter roller 17 and the second cutter roller 22 can be driven to rotate through the second sprocket 25, the chain 26 and the first sprockets 24. When the paper separating roller 10 and the printing paper roller 15 move between the two first cutter rollers 17, they can be cut by the two first cutter rollers 17, and the transmission ratio therebetween can enable the cutting and pressing to be synchronized.

[0084] The cutting mechanism further includes a separating assembly for separating the cut corner materials on both sides from the Spring Festival couplet body 1 in the middle. The separating assembly includes two sliding grooves 39 opened on the top of the workbench 6. Moving blocks 40 are slidably arranged in the sliding grooves 39. A connecting seat 45 is welded on the top of the moving block 40. A pressing plate 41 is rotatably arranged in the connecting seat 45 through a rotating shaft 46. Torsion springs 49 are sleeved on the outer walls of both ends of the rotating shaft 46. The two ends of the torsion spring 49 are respectively abutted against the outer wall of the rotating shaft 46 and both sides of the connecting seat 45. The torque coefficient of the torsion spring 49 is between 0.5 - 2 N·mm / deg to ensure that the pressing plate 41 can be effectively reset without generating excessive resistance. A push rod 42 cooperating with the first cutter roller 17 is slidably arranged on the top of the moving block 40. The push rod 42 and the pressing plate 41 are connected through a connecting member. The pressing plate 41 can be selected in various shapes to adapt to different clamping requirements. For example: 1. Rectangular flat plate: simple structure, providing uniform contact pressure, suitable for clamping corner materials on flat surfaces; 2. Toothed pressing plate: regular or irregular convex teeth are provided on the contact surface, which can effectively increase the friction with the corner materials and prevent the materials from slipping during separation; 3. Arc-shaped pressing plate: the contact surface is a concave arc or convex arc matching the radian of the material to be separated (such as the corner material of a coil), providing a more fitting and stable clamping effect, especially suitable for coiled corner materials with a certain thickness.

[0085] The connecting member includes a pull rope 48 penetrating through one side of the connecting seat 45. A connecting block 47 is fixedly arranged at the bottom of the pressing plate 41. The two ends of the pull rope 48 are respectively fixedly connected to the closer sides of the connecting block 47 and the push rod 42. Two bearings 44 are rotatably arranged on one side of the push rod 42. An eccentric ring 43 is fixedly arranged on the outer wall of the first cutter roller 17 between the two bearings 44.

[0086] When the first cutter roller 17 rotates, it can drive the eccentric ring 43 to rotate. When the eccentric ring 43 rotates, it can drive the push rod 42 to reciprocate by means of two bearings 44. When the push rod 42 moves outwards, it can drive the draw rope 48 to move outwards within the connecting seat 45. The movement of the draw rope 48 can pull the pressing plate 41 to turn downwards, clamping the paper separating roller 10 and the printing paper roller 15. When continuing to move outwards, it can pull the pressing plate 41 to move outwards through the push rod 42 and drive the moving block 40 to move outwards, separating the paper separating rollers 10 and printing paper rollers 15 on both sides from the paper separating rollers 10 and printing paper rollers 15 in the middle.

[0087] During use, power on the device, respectively sleeved the printing paper roller 15 and the paper separating roller 10 on two air shaft 9s, start the air shaft 9 for fixation, place one end of the paper separating roller 10 and the printing paper roller 15 between two pressure rollers 16, and start the motor 20 for conveying until one end of the paper separating roller 10 and the printing paper roller 15 exposes from the other side of the pressure roller 16;

[0088] Pour the glue into the glue tank 13 and start the pump body 14, so that the glue enters the spray pipe 12 through the pipeline and is sprayed from the spray head 18 onto the paper separating roller 10. Continue to start the motor 20 to drive the pressure roller 16 to rotate and convey the paper separating roller 10 and the printing paper roller 15. During the rotation of the upper pressure roller 16, it can drive the cam 38 to rotate. When the convex part of the cam 38 contacts the driving rod 35, it can push the driving rod 35 to move. The movement of the driving rod 35 can drive the driving plate 27 to move and compress the second spring 37. During the movement of the driving plate 27, it can push the spray head 18 to move to one side by means of the wave teeth 33. The movement of the spray head 18 can push the moving plate 30 to move and stretch or compress the corresponding first spring 31. When the convex part of the cam 38 moves away from the driving rod 35, the driving rod 35 can reset and move under the action of the second spring 37, causing the driving plate 27 to move away from the spray head 18. At this time, the spray head 18 can reset and move under the action of the two first springs 31 and cooperate with the release paper 5 to form a curve coating, so that the glue can be sprayed on the paper separating roller 10 in the form of a wavy line;

[0089] When the paper separating roller 10 with glue on it moves between the two pressure rollers 16, the glue can be dispersed by the pressure, making the glue evenly spread between the printing paper 2 and the release paper 5;

[0090] During the conveying process, the two first cutter rollers 17 can be driven to rotate by the first sprocket wheel 24, the second sprocket wheel 25 and the chain 26. When the paper separating roller 10 and the printing paper roller 15 move between the two first cutter rollers 17, they can be cut by the two first cutter rollers 17. During the rotation of the upper first cutter roller 17, the eccentric ring 43 can also be driven to rotate. When the eccentric ring 43 rotates, the push rod 42 can be driven to reciprocate by using the two bearings 44. When the push rod 42 moves outwards, the pulling rope 48 can be driven to move outwards in the connecting seat 45. The movement of the pulling rope 48 can pull the pressing plate 41 to turn downwards to clamp the paper separating roller 10 and the printing paper roller 15. When continuing to move outwards, the pressing plate 41 can be pulled to move outwards by the push rod 42, and the moving block 40 can be driven to move outwards, so as to separate the paper separating rollers 10 and printing paper rollers 15 on both sides from the paper separating rollers 10 and printing paper rollers 15 in the middle;

[0091] Gluing, pressing, conveying, cutting and separating are carried out in sequence.

[0092] However, as is well known to those skilled in the art, the working principles and wiring methods of the air shaft 9, the pump body 14 and the motor 20 are common knowledge. They all belong to conventional means or well-known common sense, and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A self-adhesive full-back glue Spring Festival couplets using environment-friendly adhesives, characterized in that, The spring couplet body (1) is composed of printing paper (2), a composite pearlescent film (3), a glue layer (4) and a release paper (5), wherein the composite pearlescent film (3) is sprayed on the printing paper (2) to form a protective layer, and the release paper (5) is bonded to the bottom of the printing paper (2) through the glue layer (4) and can be torn off; The composite pearlescent film (3) is a biaxially oriented polypropylene pearlescent film with a thickness of 12-18 μm, and the glue layer (4) is an environmentally friendly water-based acrylic pressure-sensitive adhesive with a coating thickness of 20-30 μm.

2. A preparation process for Spring Festival couplets, which is used to prepare the Spring Festival couplets as described in claim 1, characterized in that, The following steps are involved: S1, spraying the composite pearlescent film (3) onto the printing paper (2) using a spraying device, and rolling it up after drying at 60-80°C; S2, spraying the glue in the form of wavy lines on the surface of the paper release roller (10) using the preparation process; S3, conveying the paper release roller (10) and the paper printing roller (15) simultaneously, and pressing the paper release roller (10) and the paper printing roller (15) coated with glue during the conveying process; S4, cutting the pressed materials into the shape of the spring festival couplet body (1); S5, separating the cut scraps on both sides from the spring festival couplet body (1) in the middle.

3. The preparation process according to claim 2, characterized in that, Also includes: A workbench (6) is provided with a first rotating seat (7) and a second rotating seat (8) on both sides thereof, wherein the first rotating seat (7) and the second rotating seat (8) respectively fix a paper release roller (10) and a printing paper roller (15) via an air shaft (9); A pressure roller (16) is mounted on the top of the workbench (6) via a third rotating seat (19) and is driven by a motor (20); The spraying mechanism comprises a plurality of spray heads (18) arranged on a movable plate (30), wherein the movable plate (30) is slidably connected to a workbench (6) via a sliding rod (32), and the spray heads (18) are reciprocated left and right via a driving assembly; The cutting mechanism comprises a first knife roller (17) and a second knife roller (22), which are connected to the pressure roller (16) by a chain (26); The separation assembly comprises a moving block (40) in a slide groove (39), wherein the moving block (40) is linked to a first knife roller (17) via a push rod (42).

4. The preparation process according to claim 3, characterized in that, The spraying mechanism also includes: A first fixing seat (11) is fixed to one side of the workbench (6); A nozzle (12) connected to a plurality of nozzles (18); A glue tank (13) is connected to the nozzle (12) via a pump body (14); Wherein, the movable plate (30) is elastically connected to the first fixed seat (11) and the second rotating seat (8) via a first spring (31).

5. The preparation process according to claim 4, characterized in that, The drive assembly comprises: Two sets of second fixing seats (34) are fixed on the top of the workbench (6); A driving rod (35) is slidably disposed between the second fixing seats (34) and elastically connected via a second spring (37); A driving plate (27) is connected to two driving rods (35) and has a wavy tooth (33) on its side to cooperate with the spray head (18); The cam (38) is fixed to the outer wall of the pressure roller (16) and contacts the driving rod (35).

6. The preparation process according to claim 3, characterized in that, The cutting mechanism also includes: A fourth rotating seat (21) is arranged on both sides of the workbench (6); A first sprocket (24) is fixed to the ends of the first knife roller (17) and the second knife roller (22); The second sprocket wheel (25) is fixed to the end of the pressure roller (16); The guide wheel (23) is rotatably arranged on one side of the fourth rotating seat (21); Wherein, the chain (26) is engaged with the outer walls of the guide wheel (23), the first sprocket wheel (24) and the second sprocket wheel (25).

7. The preparation process according to claim 3, characterized in that, The separation assembly further includes: The connecting seat (45) is fixed to the top of the moving block (40); The pressing plate (41) is rotatably connected to the connecting seat (45) through a rotating shaft (46) and is provided with a restoring force by a torsion spring (49); The pulling rope (48) connects the pressing plate (41) and the push rod (42); The eccentric ring (43) is fixed to the outer wall of the first cutter roller (17) and is connected to the push rod (42) through a bearing (44).

8. The preparation process according to claim 3, characterized in that, It further includes a fixing plate (28). The fixing plate (28) is arranged between the pump body (14) and the second rotating seat (8). A kidney-shaped hole (29) is formed in the top of the fixing plate (28), and the spray head (18) is located in the kidney-shaped hole (29).

9. The preparation process according to claim 2, characterized in that, In step S2, the glue is sprayed in a wavy spraying manner, the spraying pressure is 0.2 - 0.3 MPa, and the spraying speed is 30 - 50 m / min.

10. The preparation process according to claim 2, characterized in that, In step S3, the pressing pressure is 0.3 - 0.5 MPa, and the pressing temperature is 40 - 50 °C.

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