Back gluing device for production of self-adhesive paper

Abstract

The utility model belongs to the field of gluing devices, and particularly relates to a back gluing device for self-adhesive paper production, which comprises a support component, a gluing component, a scraper component and a fixing plate. The support assembly is provided with an inserting groove and supporting legs and used for overall supporting and positioning, the gluing assembly is rapidly installed through cooperation of an inserting block and the inserting groove, a spraying head capable of being transversely adjusted is integrated, the position of the spraying head is accurately controlled through a sliding block, a sliding groove and scale marks, different paper widths are adapted, and it is ensured that a glue layer is even and flat through the scraper assembly; an ion fan is arranged at the bottom of the fixing plate and used for neutralizing static electricity on the surface of glued paper and avoiding dust adsorption or adhesion, in addition, the modular inserting and buckling design simplifies the disassembly and assembly process of the spray head and the scraper blade, the maintenance efficiency is remarkably improved, the problems that a traditional device is uneven in glue layer, static interference exists, and maintenance is complex are solved, and the service life of the device is prolonged. And the gluing quality, the production adaptability and the operation convenience are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of adhesive coating equipment, specifically a back adhesive coating device for the production of self-adhesive paper. Background Technology

[0002] Self-adhesive paper is essentially a composite material, consisting of a face material (paper, film, etc.), an adhesive backing layer, and a backing paper (silicone-coated protective paper). The main purpose of applying adhesive backing is to form an adhesive layer on the back of the face material, giving it a "self-adhesive" function. Self-adhesive paper production requires efficient coating through a coating device.

[0003] Traditional self-adhesive paper coating equipment has the following problems:

[0004] Uneven adhesive layer thickness: The fixed nozzle position cannot adapt to different paper widths, resulting in uneven adhesive spraying edges or missed areas.

[0005] Static electricity interference: After the paper is coated with glue, static electricity causes dust to attract or stick together, affecting the quality of the finished product.

[0006] Maintenance is complex: disassembling and assembling the nozzle and scraper requires removing multiple bolts, which is time-consuming and labor-intensive.

[0007] Therefore, a back-coating device for self-adhesive paper production is proposed to address the above problems. Utility Model Content

[0008] To overcome the shortcomings of existing technologies, such as uneven adhesive layer thickness, electrostatic interference, and complex maintenance, this utility model proposes a back-side adhesive coating device for self-adhesive paper production.

[0009] The technical solution adopted by this utility model to solve its technical problem is: a back coating device for producing self-adhesive paper, including a support assembly, a coating assembly, a scraper assembly and a fixing plate.

[0010] The bracket assembly includes a bracket, the top of which has a slot.

[0011] The adhesive application assembly includes a mounting plate, a plug is fixedly connected to the bottom end face of the mounting plate, a first electric push rod is mounted on the bottom end face of the mounting plate, a connecting plate is fixedly connected to the output end of the first electric push rod, a sliding groove is provided on the connecting plate, a slider is slidably fitted in the sliding groove, a threaded groove is provided at the bottom of the slider, and a bolt is threadedly connected in the threaded groove.

[0012] The scraper assembly includes a second electric push rod, the output end of which is fixedly connected to a threaded rod, a threaded cylinder is threadedly connected to the threaded rod, and a scraper is fixedly connected to the bottom end of the threaded cylinder.

[0013] An ion fan is installed on the bottom surface of the fixed plate.

[0014] Preferably, a marking block is fixedly connected to the center of one end face of the threaded groove, a nozzle is fixedly connected to the other end face of the threaded groove, and scale lines are provided on the outer surface of the connecting plate near the marking block.

[0015] Preferably, the adhesive application assembly further includes an adhesive applicator, which has multiple output ports, each of which is fitted with a valve. The end of the valve is fitted with a conduit, and the end of the conduit is fitted with a spray head.

[0016] Preferably, hooks are fixedly connected to the outer surfaces of both the fixing plate and the mounting plate, and a latch is fixedly connected to the outer surface of the bracket, with the hooks and latches being snapped together.

[0017] Preferably, the two ends of the ion fan are snapped together on the inner side of the bracket, and the bottom end of the bracket is fixedly equipped with support legs.

[0018] Preferably, the support legs are four in number and are arranged in a rectangular shape on the bottom surface of the support assembly.

[0019] Preferably, the top of the slider is slidably engaged with the top surface of the connecting plate, and the nut end of the bolt overlaps the bottom surface of the connecting plate.

[0020] Preferably, the second electric push rod is fixedly installed on the bottom surface of the mounting plate, and the plug is inserted into the slot.

[0021] The advantages of this utility model are:

[0022] 1. This utility model achieves precise adjustment of the lateral position of the nozzle through the linkage structure design of the slider, groove, scale line and marking block of the glue coating component. The structure design of the connecting plate being raised and lowered by the first electric push rod achieves dynamic adjustment of the nozzle height. It solves the problems of insufficient adaptability to different paper thicknesses or glue viscosity, uneven glue layer thickness or missed coating caused by fixed nozzle position, and improves the flexibility and production efficiency of the glue coating process, glue coating uniformity and adaptability to different paper widths.

[0023] 2. This utility model achieves the function of static electricity neutralization on the paper surface after gluing by integrating an ion fan at the bottom of the fixed plate, thus solving the problem of static electricity adsorption of dust or paper adhesion and improving the cleanliness and quality stability of the finished product.

[0024] 3. This utility model, through the plug-in engagement of the insert and slot, and the snap-fit ​​connection of the hook and lock, enables the quick assembly and disassembly of the gluing assembly and scraper assembly. This solves the problems of complex, time-consuming, and labor-intensive maintenance in traditional equipment, thereby improving maintenance efficiency and equipment utilization. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the adhesive application device;

[0027] Figure 2 for Figure 1 A magnified view of the structure at point A in the middle;

[0028] Figure 3 A schematic diagram of the back structure of the adhesive application device;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 5 This is a schematic diagram of the structure of the support assembly of this utility model;

[0031] Figure 6 This is a schematic diagram of the bottom structure of the adhesive coating component of this utility model;

[0032] Figure 7 This is a schematic diagram of the connection between the slider, threaded groove and marking block in the adhesive application assembly of this utility model;

[0033] Figure 8 This is a schematic diagram of the scraper assembly of this utility model.

[0034] In the diagram: 1. Bracket assembly; 101. Bracket; 102. Slot; 2. Glue application assembly; 201. Mounting plate; 202. Insert block; 203. First electric push rod; 204. Connecting plate; 205. Slide groove; 206. Slider; 207. Threaded groove; 208. Bolt; 209. Marking block; 2010. Nozzle; 2011. Glue applicator; 2012. Valve; 2013. Conduit; 2014. Scale line; 3. Scraper assembly; 301. Second electric push rod; 302. Threaded rod; 303. Threaded cylinder; 304. Scraper; 4. Fixing plate; 5. Ionizing fan; 6. Hook; 7. Lock; 8. Support leg. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0037] This application discloses a back-coating apparatus for producing self-adhesive paper. (Refer to...) Figures 1 to 8 A back coating device for producing self-adhesive paper includes a support assembly 1, a coating assembly 2, a scraper assembly 3, and a fixing plate 4.

[0038] The bracket assembly 1 includes a bracket 101, and a slot 102 is provided on the top of the bracket 101.

[0039] The adhesive application assembly 2 includes a mounting plate 201. A plug 202 is fixedly connected to the bottom surface of the mounting plate 201, and the plug 202 is inserted into a slot 102. A first electric push rod 203 is mounted on the bottom surface of the mounting plate 201. A connecting plate 204 is fixedly connected to the output end of the first electric push rod 203. A sliding groove 205 is provided on the connecting plate 204, and a slider 206 is slidably fitted within the sliding groove 205. A threaded groove 207 is provided at the bottom of the slider 206, and a bolt 208 is threadedly connected within the threaded groove 207. The top of the slider 206 is slidably fitted with the top surface of the connecting plate 204. The nut of the bolt 208... The end is connected to the bottom end face of the connecting plate 204. A marking block 209 is fixedly connected to the center of one end face of the threaded groove 207. A nozzle 2010 is fixedly connected to the other end face of the threaded groove 207. A scale line 2014 is provided on the outer surface of the connecting plate 204 near the marking block 209. The scale line accuracy is: each division corresponds to a displacement of 0.5mm. The glue application component 2 also includes a glue application machine 2011. The glue application machine 2011 is provided with multiple output ports, and each output port is fitted with a valve 2012. The end of the valve 2012 is fitted with a conduit 2013. The end of the conduit 2013 is fitted with the nozzle 2010.

[0040] Preferably, the glue applicator 2011 uses a quantitative gear pump with a flow rate range of 0.1-10L / min and an applicable glue viscosity range of 100-5000cps. The lifting speed of the first electric push rod 203 is adjustable (1-10mm / s) to adapt to different paper thicknesses.

[0041] The insert 202 and slot 102 enable quick positioning and installation of the glue application assembly, ensuring that the nozzle 2010 is aligned with the paper transport path. The first electric push rod 203 drives the connecting plate 204 to rise and fall, dynamically adjusting the nozzle height to adapt to different paper thicknesses or glue viscosity requirements. The slider 206 slides along the slide groove 205, and in conjunction with the scale line 2014 and the marker block 209, adjusts the lateral position of the nozzle to adapt to different paper widths. The bolt 208 locks the slider through the threaded groove 207 to prevent the nozzle from shifting during the glue application process.

[0042] The scraper assembly 3 includes a second electric push rod 301. The output end of the second electric push rod 301 is fixedly connected to a threaded rod 302. A threaded cylinder 303 is threadedly connected to the threaded rod 302. A scraper 304 is fixedly connected to the bottom end of the threaded cylinder 303. The second electric push rod 301 is fixedly installed on the bottom surface of the mounting plate 201.

[0043] The linkage design between the second electric push rod 301 and the threaded rod 302 enables the rapid lifting and lowering of the scraper 304 and fine-tuning of the pressure, ensuring uniform glue application without damaging the paper.

[0044] An ion fan 5 is installed on the bottom surface of the fixed plate 4. Hooks 6 are fixedly connected to the outer surfaces of both the fixed plate 4 and the mounting plate 201. A latch 7 is fixedly connected to the outer surface of the bracket 101. The hooks 6 and latches 7 are snapped together. The two ends of the ion fan 5 are snapped together on the inner side of the bracket 101. Four legs 8 are fixedly installed on the bottom surface of the bracket 101 and are arranged in a rectangular shape on the bottom surface of the bracket assembly 1.

[0045] The ion fan 5 is integrated into the bottom of the fixed plate 4. It eliminates static electricity immediately after the glue is applied, preventing the glue layer from attracting impurities due to static electricity and improving the cleanliness of the finished product. The design of the hook 6, the lock 7 and the plug-in structure allows the glue application component 2 and the scraper component 3 to be quickly disassembled and assembled, which is convenient for cleaning the nozzle or replacing the scraper and improving maintenance efficiency.

[0046] The ion fan 5, the first electric push rod 203, and the second electric push rod 301 are controlled and executed by an external PLC controller.

[0047] Working principle:

[0048] Adhesive delivery and distribution:

[0049] The glue applicator 2011 delivers glue to the conduit 2013 through multiple output ports. Each output port is equipped with a valve 2012. By adjusting the valve opening, the amount of glue from different nozzles 2010 can be controlled to meet the needs of different paper widths or glue layer thicknesses.

[0050] Nozzle position adjustment:

[0051] The slider 206 slides within the groove 205 of the connecting plate 204, aligning with the marker block 209 via the scale line 2014, precisely positioning the lateral position of the nozzle to ensure that the adhesive spray covers the target area of ​​the paper.

[0052] The first electric push rod 203 drives the connecting plate 204 to rise and fall, causing the spray head 2010 to approach or move away from the paper surface, dynamically adjusting the spraying distance according to the adhesive viscosity or paper thickness.

[0053] Adhesive spraying procedure:

[0054] The nozzle 2010 sprays the adhesive evenly onto the back of the paper, and the valve 2012 adjusts the amount of adhesive in real time to avoid localized over-thickness or missed areas, ensuring the uniformity of the adhesive layer.

[0055] Scraper pressure control:

[0056] The second electric push rod 301 drives the threaded rod 302 to rise and fall, causing the threaded cylinder 303 and the scraper 304 to press down onto the adhesive layer surface. Through the cooperation of the threaded rod and the threaded cylinder, the contact pressure of the scraper on the adhesive layer can be finely adjusted to avoid excessive pressure damaging the paper or insufficient pressure causing uneven adhesive layer.

[0057] Glue application process:

[0058] The scraper 304 moves laterally before the adhesive cures, scraping away excess adhesive and eliminating air bubbles to form a uniformly thick and smooth adhesive layer. Precise control of the electric actuator ensures stable scraper movement, making it suitable for high-speed production lines.

[0059] Electrostatic neutralization mechanism:

[0060] The ion fan 5 at the bottom of the fixed plate 4 is activated during the paper transport process, blowing out positive and negative ions to neutralize the static charge generated on the paper surface due to friction, preventing the paper from attracting dust or sticking together due to static electricity after gluing, thus ensuring the cleanliness of the adhesive layer and the quality of the finished product.

[0061] Modular installation:

[0062] The glue application assembly 2 is positioned by inserting the plug 202 into the slot 102 of the bracket 101 to ensure that the printhead is aligned with the paper transport path.

[0063] Hook 6 and latch 7 are connected by a snap-fit ​​mechanism, enabling quick assembly and disassembly of the glue application assembly and the fixing plate, facilitating cleaning of the nozzle or replacement of the scraper.

[0064] Equipment stability:

[0065] The four legs 8 at the bottom of the support assembly 1 are arranged in a rectangular shape to provide stable support for the device, reduce vibration interference during the glue application and scraping process, and ensure processing accuracy.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A back-side adhesive coating device for producing self-adhesive paper, characterized in that, include: A support assembly (1) includes a support (101) and a slot (102) is provided on the top of the support (101). The adhesive application assembly (2) includes a mounting plate (201), a plug (202) is fixedly connected to the bottom end face of the mounting plate (201), a first electric push rod (203) is mounted on the bottom end face of the mounting plate (201), a connecting plate (204) is fixedly connected to the output end of the first electric push rod (203), a sliding groove (205) is provided on the connecting plate (204), a slider (206) is slidably fitted in the sliding groove (205), a threaded groove (207) is provided at the bottom of the slider (206), and a bolt (208) is threadedly connected in the threaded groove (207). The scraper assembly (3) includes a second electric push rod (301), the output end of which is fixedly connected to a threaded rod (302), a threaded cylinder (303) is threadedly connected to the threaded rod (302), and a scraper (304) is fixedly connected to the bottom end of the threaded cylinder (303). A fixing plate (4) is provided, and an ion fan (5) is installed on the bottom surface of the fixing plate (4).

2. The back coating device for self-adhesive paper production according to claim 1, characterized in that: A marker block (209) is fixedly connected to the center of one end face of the threaded groove (207), and a nozzle (2010) is fixedly connected to the other end face of the threaded groove (207). A scale line (2014) is provided on the outer surface of the connecting plate (204) near the marker block (209).

3. The back-side adhesive coating device for self-adhesive paper production according to claim 1, characterized in that: The adhesive application assembly (2) also includes an adhesive applicator (2011), which has multiple output ports, and each output port is fitted with a valve (2012). The end of the valve (2012) is fitted with a conduit (2013), and the end of the conduit (2013) is fitted with a nozzle (2010).

4. The back-side adhesive coating device for self-adhesive paper production according to claim 1, characterized in that: Hooks (6) are fixedly connected to the outer surfaces of the fixing plate (4) and the mounting plate (201), and buckles (7) are fixedly connected to the outer surface of the bracket (101). The hooks (6) and buckles (7) are snapped together.

5. The back-side adhesive coating device for self-adhesive paper production according to claim 1, characterized in that: The two ends of the ion fan (5) are snapped together on the inner side of the bracket (101), and the bottom end of the bracket (101) is fixedly installed with a support leg (8).

6. The back-side adhesive coating device for self-adhesive paper production according to claim 5, characterized in that: There are four legs (8), which are arranged in a rectangular shape on the bottom surface of the support assembly (1).

7. The back coating device for self-adhesive paper production according to claim 1, characterized in that: The top of the slider (206) is slidably engaged with the top surface of the connecting plate (204), and the nut end of the bolt (208) overlaps the bottom surface of the connecting plate (204).

8. The back coating device for producing self-adhesive paper according to claim 1, characterized in that: The second electric push rod (301) is fixedly installed on the bottom surface of the mounting plate (201), and the plug (202) is inserted into the slot (102).

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