Double-sided glue-coated composite inkjet printing paper production equipment and method

Abstract

The present invention provides a double-sided glued composite printing paper production equipment and method, the present invention relates to the glue coating technology field, and is used to bond outer layers of coatings on both sides of inner paper, including a printing device for printing on the inner paper, and also including a laminating device for laminating two outer layers of coatings on the outer side of the inner paper, the laminating device includes two sets of laminating components, the laminating component includes an unwinding roller for unwinding the outer layer of coating and a laminating roller for laminating the outer layer of coating on the surface of the inner paper, the laminating component also includes a first auxiliary roller located on the side close to the inner paper and a second auxiliary roller on the side away from the inner paper, the outer layer of coating passes through the second auxiliary roller and the first auxiliary roller in sequence after unwinding. The invention greatly reduces the requirements for drying the surface of the inner paper and the spraying adsorption, simplifies the production equipment, reduces the amount of ink, and greatly improves the efficiency of spraying and gluing production.

Description

Technical Field

[0001] The invention relates to the technical field of glue coating, and in particular to a production device and method for double-sided glue-coated composite inkjet paper. Background Art

[0002] The printing technology can form a predetermined pattern on the surface of the paper, which greatly shortens the production time of the predetermined paper and saves the use of coatings.

[0003] Since the coating on the surface of the inkjet paper is relatively thin, in order to ensure the integrity of the surface pattern, the surface of the inkjet paper used in some special environments needs to be laminated with a protective film to form a composite inkjet paper, and the inner layer of paper and the outer layer of film need to be bonded with glue.

[0004] Traditional production equipment requires coating glue on the surface of the printing paper, and then pressing a protective film on the surface of the printing paper to form a composite printing paper. In order to avoid damage to the printed pattern due to friction during the gluing process, the printing paper needs to be completely dried, and there are certain requirements for the specifications and adsorption strength of the printing coating.

[0005] Completely drying the printed paper requires extending the use time of the production equipment, increasing the production process, increasing the production cost, and reducing the production efficiency; at the same time, the coating on the surface of the printed paper is thin or the adsorption strength is weak, which can easily cause damage to the surface pattern of the printed paper during the friction coating and scraping process, affecting the quality of the finished composite printed paper and causing the production results to be scrapped. Summary of the invention

[0006] In view of the above problems, the present invention provides a double-sided glue-coated composite inkjet printing paper production device and method, which greatly reduces the requirements for inner paper surface drying and spray adsorption, simplifies production equipment, reduces ink usage, and greatly improves the efficiency of spraying and gluing production.

[0007] To solve the above problems, the technical solution adopted by the present invention is:

[0008] A double-sided glue-coated composite printing paper production equipment is used to bond outer layers of film on both sides of inner paper, including a printing equipment for printing on the inner paper, and also including a pressing device for pressing two outer layers of film on the outside of the inner paper, the pressing device includes two sets of pressing components, the pressing component includes an unwinding roller for unwinding the outer layer of film and a pressing roller for pressing the outer layer of film on the surface of the inner paper, the pressing component also includes a first auxiliary roller located on the side close to the inner paper and a second auxiliary roller on the side away from the inner paper, after the outer layer of film is unwound, it passes through the second auxiliary roller and the first auxiliary roller in sequence, the outer side of the second auxiliary roller is provided with a gluing device for applying glue to the surface of the outer layer of film, and the outer side of the first auxiliary roller is provided with a glue scraping component.

[0009] Preferably, the glue coating device includes a glue coating mounting frame, and two glue coating rollers are rotatably connected to the inner side of the glue coating mounting frame. The two glue coating rollers are tightly pressed against each other, and a receiving groove for receiving glue is formed at the upper ends of the two glue coating rollers. A glue coating channel for the outer layer coating to pass through is formed between the first glue coating roller and the second auxiliary roller.

[0010] Preferably, the scraper assembly comprises a relatively fixed scraper positioning frame, a scraper plate is arranged outside the scraper positioning frame, the scraper plate is arranged obliquely and a scraper channel for the outer coating to pass through is formed between the end of the scraper plate and the first auxiliary roller.

[0011] Preferably, the scraper positioning frame is columnar, two scraper plates are provided, and both scraper plates are rotatably connected to the scraper positioning frame, and a driving component is provided between the two scraper positioning frames, and the driving component is used to control the two scraper plates to alternately face the first auxiliary roller.

[0012] Preferably, the driving assembly includes a driving shaft and a driving rod fixed on the outside of the driving shaft, the scraper plate is located on the deflection path of the driving rod, and a torsion elastic member is arranged between the scraper plate and the scraper positioning frame, and the elastic driving directions of the two torsion elastic members are opposite.

[0013] Preferably, a retractable locking device is provided on the surface of the scraper positioning frame, and the locking device is extended to lock and position the scraper plate from the inside.

[0014] Preferably, the locking device is a hydraulic telescopic device, and a hydraulic control device connected to the hydraulic telescopic device is arranged inside the scraper positioning frame. The hydraulic control device is connected to the driving shaft, and after the driving shaft rotates to a predetermined position, the hydraulic telescopic device is controlled to be telescoped through the hydraulic control device.

[0015] Preferably, the hydraulic control device includes a pumping component for pumping liquid toward the hydraulic telescopic device, and a suction component for absorbing liquid from the hydraulic telescopic device. When the driving shaft drives the scraper plate to rotate to a side close to the hydraulic telescopic device, the control oil in the hydraulic telescopic device is first sucked out by the suction component to control its contraction. After a predetermined time, the control oil is pumped into the hydraulic telescopic device by the pumping component to control its extension.

[0016] Preferably, a cleaning device is further provided on the outside of the scraper assembly, and the cleaning device includes a cleaning assembly for cleaning the surface of the scraper plate and a telescopic assembly for controlling the telescopic movement of the cleaning assembly.

[0017] A method for producing double-sided glued composite inkjet paper, using the above-mentioned double-sided glued composite inkjet paper production equipment, includes the following steps: S1, pulling the inner paper and two outer coatings from the first side; S2, applying glue to the surface of the outer coating by a glue coating device; S3, scraping the glue on the surface of the outer coating by a glue scraping component; S4, pressing the two outer coatings on the surface of the inner paper from both sides by two pressing rollers to form a composite inkjet paper.

[0018] The beneficial effects of the present invention are:

[0019] Compared with the prior art, and compared with the traditional method of gluing and scraping glue on the inner layer of paper, by adopting the above structure, the outer layers of the coating on both sides can be respectively coated with glue and scraped with glue at a position relatively close to the outside, thereby improving the gluing and bonding effect and avoiding damage to the pattern on the surface of the inner layer of paper during the gluing and scraping process, thereby ensuring the quality of the finished composite inkjet paper; at the same time, by adopting the above method, the requirements for drying the surface of the inner layer of paper and the adsorption degree of the spraying are greatly reduced, the production equipment is streamlined, the amount of ink used is reduced, and the efficiency of the spraying and gluing production is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure.

[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the side structure.

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the top view structure.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the scraper assembly and the cleaning device of the present invention.

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the main structure.

[0026] Figure 7 For the present invention Figure 5 Schematic diagram of the top view structure.

[0027] Figure 8 For the present invention Figure 5 Schematic diagram of the side structure.

[0028] Fig. 9 It is a schematic diagram of the internal structure of the liquid suction shell of the present invention.

[0029] In the figure: 100, composite inkjet paper; 110, outer layer coating; 120, inner layer paper; 200, laminating device; 210, laminating mounting frame; 220, unwinding roller; 230, first auxiliary roller; 240, second auxiliary roller; 250, laminating roller; 300, gluing device; 310, gluing mounting frame; 320, gluing roller; 400, glue scraping assembly; 410, glue scraping positioning frame; 420, driving assembly; 421, driving rod; 422, driving shaft; 423, first sealing Plate; 430, scraper plate; 431, scraper part; 432, limit guide ring; 440, locking device; 450, liquid suction shell; 451, second sealing plate; 4501, first liquid suction chamber; 4502, second liquid suction chamber; 500, cleaning device; 510, cleaning component; 511, sealing airbag; 512, pump liquid pipeline; 520, telescopic component; 521, telescopic rod; 522, position control mounting plate; 523, guide rod; 600, drying device; 700, printing equipment. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] In order to solve the problems mentioned in the background technology, Figure 1 -Attached Fig. 9 A double-sided glue-coated composite inkjet paper production device is used to bond outer layers of coating 110 on both sides of an inner paper 120, including a printing device 700 for printing on the inner paper 120, and also includes a pressing device 200 for pressing two outer layers of coating 110 on the outside of the inner paper 120. The outer layers of coating 110 are bonded and pressed on both sides of the inner paper 120 to form a composite inkjet paper 100.

[0032] The laminating device 200 includes two sets of laminating components, which are located at the upper and lower sides to bond and press the two outer layer films 110. The laminating components include a unwinding roller 220 for unwinding the outer layer film 110 and a laminating roller 250 for pressing the outer layer film 110 onto the surface of the inner layer paper 120. A laminating gap is formed between the two laminating rollers 250. The two outer layer films 110 and the inner layer paper 120 located between the two outer layer films 110 are squeezed during the process of passing through the laminating gap, and finally a composite inkjet paper 100 is generated.

[0033] The lamination assembly also includes a first auxiliary roller 230 located on the side close to the inner paper 120 and a second auxiliary roller 240 located on the side away from the inner paper 120. After the outer layer film 110 is unwound, it passes through the second auxiliary roller 240 and the first auxiliary roller 230 in sequence. A gluing device 300 for applying glue to the surface of the outer layer film 110 is arranged on the outer side of the second auxiliary roller 240. A glue scraping assembly 400 is arranged on the outer side of the first auxiliary roller 230. The gluing device 300 can be used to fill the bonding glue on the side of the outer layer film 110 close to the inner paper 120. The glue scraping assembly 400 can be used to evenly apply the glue on the surface of the outer layer film 110 to ensure the stability of the subsequent bonding of the outer layer film 110.

[0034] The first auxiliary roller 230 and the second auxiliary roller 240 here can both play a guiding and supporting role, controlling the outer layer coating 110 to move along a predetermined path, moving to the outside for glue coating and scraping, and can achieve continuous operation in a smaller space, thereby improving the glue coating efficiency and simplifying the size of the equipment.

[0035] A drying device 600 may be installed between the printing device 700 and the laminating device 200 , and the drying device 600 can be used to quickly dry the pattern sprayed on the surface of the inner paper 120 , thereby ensuring the quality of the finished product.

[0036] In summary, compared with the traditional method of gluing and scraping glue on the inner layer of paper 120, by adopting the above structure, the outer layer coating 110 on both sides can be coated with glue and scraped with glue at a position relatively close to the outside, which can improve the gluing and bonding effect while avoiding damage to the pattern on the surface of the inner layer of paper 120 during the gluing and scraping process, thereby ensuring the quality of the finished composite inkjet paper 100; at the same time, by adopting the above method, the requirements for drying the surface of the inner layer of paper 120 and the spraying adsorption degree are greatly reduced, the production equipment is streamlined, the amount of ink used is reduced, and the efficiency of spraying and gluing production is greatly improved.

[0037] Specifically, the glue coating device 300 includes a glue coating mounting frame 310, and two glue coating rollers 320 are rotatably connected to the inner side of the glue coating mounting frame 310. The two glue coating rollers 320 are tightly pressed against each other, and a receiving groove for receiving glue is formed at the upper end of the two glue coating rollers 320. A glue coating channel for the outer layer coating 110 to pass through is formed between the first glue coating roller 320 and the second auxiliary roller 240.

[0038] The outer layer film 110 moves in a directional manner under the action of traction. When passing through the glue coating channel, the outer layer film 110 here can be pressed tightly against the nearby glue coating roller 320, and glue can be applied to the surface of the outer layer film 110 under the action of friction; the glue coating roller 320 here can cooperate with the second auxiliary roller 240 on the inner side to achieve stable guided transportation of the outer layer film 110 while achieving continuous automatic gluing.

[0039] Specifically, the scraper assembly 400 includes a relatively fixed scraper positioning frame 410, a scraper plate 430 is arranged outside the scraper positioning frame 410, the scraper plate 430 is arranged obliquely and a scraper channel for the outer coating 110 to pass through is formed between the end of the scraper plate 430 and the first auxiliary roller 230.

[0040] The outer layer coating 110 can pass through the scraper channel, and the scraper plate 430 here can contact the surface of the outer layer coating 110. The scraper plate 430 is in a relatively fixed state. During the directional movement of the outer layer coating 110, the scraper plate 430 can continuously scrape the glue on the surface of the outer layer coating 110. The scraper plate 430 can further make the glue on the surface of the outer layer coating 110 more uniform, thereby ensuring the effect of subsequent pressing and bonding.

[0041] The scraper positioning frame 410 is preferably columnar, and two scraper plates 430 are provided, and the two scraper plates 430 are both rotatably connected to the scraper positioning frame 410. A driving component 420 is provided between the two scraper positioning frames 410, and the driving component 420 controls the two scraper plates 430 to alternately face the first auxiliary roller 230.

[0042] Through the above-mentioned structural setting, the driving component 420 can alternately control the two scrapers 430 to scrape the glue on the surface of the outer layer coating 110 toward the side of the first auxiliary roller 230 without disassembling the scrapers 430, thereby realizing continuous scraping production without stopping the machine, further improving production efficiency.

[0043] Specifically; the driving component 420 includes a driving shaft 422 and a driving rod 421 fixed on the outside of the driving shaft 422, the scraper plate 430 is located on the deflection path of the driving rod 421, and a torsion elastic member is arranged between the scraper plate 430 and the scraper positioning frame 410, and the elastic driving directions of the two torsion elastic members are opposite. The above-mentioned torsion elastic members can be selected as torsion springs, and the two torsion springs can control the two scrapers 430 to have a tendency to deflect in different directions.

[0044] The driving shaft 422 here is connected to a power input device such as a motor, which can control the driving rod 421 to deflect around the axis of the scraper positioning frame 410; during the deflection of the driving rod 421, it can push the scraper plate 430 to move synchronously in a predetermined direction and move to the side close to the outer layer coating 110 to achieve stable scraping.

[0045] After the driving rod 421 pushes the first scraper plate 430 to move to a predetermined position, the second scraper plate 430 can automatically move to a position away from the outer coating 110 under the action of the torsion spring elasticity. The staff can clean or replace the scraper plate 430 without affecting the other scraper plate 430 from scraping the outer coating 110.

[0046] After the second scraper plate 430 is cleaned or replaced, the second scraper plate 430 can be controlled by the driving rod 421 to move to a position close to the side of the outer coating 110 to achieve continuous scraping and cleaning.

[0047] The scraper plate 430 here includes a scraper portion 431 and a limiting guide ring 432. The limiting guide ring 432 is sleeved on the surface of the scraper positioning frame 410 and is rotatably connected thereto. The scraper portion 431 is plate-shaped and can be abutted against the surface of the outer coating 110 to achieve glue scraping.

[0048] Furthermore, a retractable locking device 440 is provided on the surface of the scraper positioning frame 410. After the locking device 440 is extended, the scraper plate 430 is locked and positioned from the inside. The position of the scraper plate 430 can be locked by the locking device 440. Through the above design, there is no need for the driving rod 421 to be constantly in the outer position to support the scraper plate 430. The locking device 440 can limit the scraper plate 430 to overcome the effect of the torsion spring, thereby ensuring that the scraper plate 430 is in a stable position for scraping.

[0049] Through the above-mentioned structural design, while the locking device 440 locks the first scraper plate 430, the driving rod 421 can push the second scraper plate 430 to move toward the side close to the outer layer coating 110. At this time, the two scraper plates 430 can be quickly replaced in a shorter time, shortening the blank period of scraping and further improving the quality of the finished composite inkjet paper 100.

[0050] The locking device 440 and the driving rod 421 are linked and controlled. After the driving rod 421 pushes the second scraper plate 430 to move to a position close to the locking device 440, the locking device 440 automatically contracts. After the locking device 440 contracts, the first scraper plate 430 can move toward the side away from the outer coating 110 under the action of torsional elasticity, automatically making room for the locking position for the second scraper plate 430. The two scraper plates 430 can be automatically controlled through the torsion spring, the locking device 440 and the driving rod 421, with fast response speed and good control effect.

[0051] Preferably, the locking device 440 is a hydraulic telescopic device. A hydraulic control device connected to the hydraulic telescopic device is provided inside the scraper positioning frame 410. The hydraulic control device is connected to the driving shaft 422. After the driving shaft 422 rotates to a predetermined position, the hydraulic telescopic device is controlled to be telescoped through the hydraulic control device.

[0052] After the driving shaft 422 drives the driving rod 421 to rotate to a position close to the locking device 440, the hydraulic telescopic device is first controlled to retract. After the driving shaft 422 continues to drive the driving rod 421 to deflect a predetermined angle (to make the scraper plate 430 opposite to the locking device 440), the locking device 440 here is extended. After the locking device 440 is extended, the locking limit of the outer scraper plate 430 is achieved.

[0053] It should be noted that, during the return stroke of the driving rod 421 , the locking device 440 here will not shrink, thereby avoiding accidents caused by the shrinkage of the locking device 440 .

[0054] Furthermore; the hydraulic control device includes a pumping component that pumps liquid toward the hydraulic telescopic device, and a suction component that absorbs liquid from the hydraulic telescopic device. When the driving shaft 422 drives the scraper plate 430 to rotate to a side close to the hydraulic telescopic device, the control oil in the hydraulic telescopic device is first sucked out by the suction component to control its contraction. After a predetermined time, the driving rod 421 drives the corresponding scraper plate 430 to move to a locking position relative to the locking device 440, and then the control oil is pumped into the hydraulic telescopic device through the pumping component to control its extension.

[0055] Through the coordinated control of the liquid suction component and the liquid pump component, the automatic extension and retraction control of the locking device 440 can be achieved. At the same time, the liquid suction component and the liquid pump component here are both connected and controlled with the driving shaft 422, and can be automatically controlled according to the deflection angle of the driving shaft 422, thereby improving the efficiency and effect of the control.

[0056] The liquid suction component here includes a liquid suction shell 450, to which a second sealing plate 451 is fixedly connected, and the driving shaft 422 here penetrates into the liquid suction shell 450 and is fixed with a first sealing plate 423, and a relatively sealed first liquid suction chamber 4501 and a second liquid suction chamber 4502 are formed between the first sealing plate 423 and the second sealing plate 451, and the first liquid suction chamber 4501 and the second liquid suction chamber 4502 are both connected to a delivery pipe with two built-in one-way valves, and the first delivery pipe of the first liquid suction chamber 4501 and the second liquid suction chamber 4502 is connected to the locking device 440, and is used for sucking out the liquid inside the locking device 440 to control the contraction of the locking device 440.

[0057] The second delivery pipeline of the first liquid suction chamber 4501 and the second liquid suction chamber 4502 is connected to a flexible storage device, which is a pump liquid component. The storage device has a tendency to discharge the internal liquid due to its own elasticity; the storage device here is connected to the locking device 440 through a pump liquid pipeline with a built-in solenoid valve. After the driving shaft 422 rotates to a predetermined position, the solenoid valve is opened to pump the control oil in the storage device into the locking device 440 to control its extension.

[0058] Specific combination of Fig. 9 When the driving shaft 422 drives the first sealing plate 423 to rotate counterclockwise, the control oil in the locking device 440 can be sucked out through the second liquid suction chamber 4502, and the control locking device 440 can be contracted. At the same time, the first liquid suction chamber 4501 gradually shrinks, and the control oil in the first liquid suction chamber 4501 can be pumped into the storage device for storage. At this time, the solenoid valve is in a closed state, and the storage device is in an energy storage state.

[0059] After the locking device 440 is controlled to be fully retracted and the scraper plate 430 moves to a position relative to the locking device 440, the solenoid valve is controlled to open, and under the action of the contraction elasticity of the storage device, the oil in the storage device is pumped into the locking device 440, and the locking device 440 is controlled to automatically extend, thereby realizing automatic control.

[0060] When the driving shaft 422 drives the first sealing plate 423 to rotate clockwise, the position and state are opposite to those described above, and the same purpose can be achieved.

[0061] A cleaning device 500 is also provided on the outside of the scraper assembly 400. The cleaning device 500 includes a cleaning assembly 510 for cleaning the surface of the scraper plate 430, and also includes a telescopic assembly 520 for controlling the extension and retraction of the cleaning assembly 510. The telescopic assembly 520 can be used to control the extension of the cleaning assembly 510. The cleaning assembly 510 can be sleeved on the outside of the scraper plate 430 to clean excess glue remaining on the surface of the scraper plate 430.

[0062] Pumping pipes 512 are arranged on both sides of the cleaning component 510 to control the directional flow of the cleaning liquid. A sealing airbag 511 is also arranged inside the cleaning component 510 to seal the cleaning component 510 and the scraper plate 430 to avoid spillage of the cleaning liquid.

[0063] A method for producing double-sided glue-coated composite inkjet paper, using the above-mentioned double-sided glue-coated composite inkjet paper production equipment, comprises the following steps:

[0064] S1. Pull the inner paper 120 and the two outer coatings 110 from the first side to drive the outer coatings 110 and the inner paper 120 to move relatively synchronously. The above-mentioned pulling device can be selected as the winding device at the end.

[0065] S2. Apply glue to the surface of the outer coating 110 through the glue coating device 300; apply glue to the side of the outer coating 110 close to the inner paper 120 to ensure stable bonding between the outer coating 110 and the inner paper 120.

[0066] S3. Scrape the glue on the surface of the outer coating 110 by the glue scraping assembly 400 to make the glue at various positions on the surface of the outer coating 110 relatively flat, further ensuring the quality of bonding between the outer coating 110 and the inner paper 120, and ensuring the quality of the finished composite printing paper 100.

[0067] S4. The two outer coatings 110 are pressed onto the surface of the inner paper 120 from both sides by two pressing rollers 250 to form a composite printing paper 100. Under the pressure of the pressing rollers 250, the outer coating 110 and the inner paper 120 can be stably pressed together to form the composite printing paper 100.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided glue-coated composite printing paper production device, used for bonding outer layers of coating (110) on both sides of an inner layer of paper (120), comprising a printing device (700) for printing on the inner layer of paper (120), and also comprising a pressing device (200) for pressing two outer layers of coating (110) on the outer side of the inner layer of paper (120), characterized in that: The laminating device (200) comprises two sets of laminating components, the laminating components comprising an unwinding roller (220) for unwinding the outer layer coating (110) and a laminating roller (250) for laminating the outer layer coating (110) onto the surface of the inner layer paper (120), the laminating components further comprising a first auxiliary roller (230) located on a side close to the inner layer paper (120) and a second auxiliary roller (240) located on a side away from the inner layer paper (120), the outer layer coating (110) passing through the second auxiliary roller (240) and the first auxiliary roller (230) in sequence after being unwound, a glue coating device (300) for coating glue on the surface of the outer layer coating (110) being arranged on the outer side of the second auxiliary roller (240), and a glue scraping component (400) being arranged on the outer side of the first auxiliary roller (230); The scraper assembly (400) comprises a relatively fixed scraper positioning frame (410), and a scraper plate (430) is arranged outside the scraper positioning frame (410); Two scraper plates (430) are provided, and both scraper plates (430) are rotatably connected to the scraper positioning frame (410). A driving component (420) is provided between the two scraper positioning frames (410), and the driving component (420) controls the two scraper plates (430) to alternately face the first auxiliary roller (230); The driving assembly (420) comprises a driving shaft (422) and a driving rod (421) fixed outside the driving shaft (422); the scraper plate (430) is located on a deflection path of the driving rod (421); and a torsion elastic member is provided between the scraper plate (430) and the scraper positioning frame (410); the elastic driving directions of the two torsion elastic members are opposite; A retractable locking device (440) is provided on the surface of the scraper positioning frame (410), and after the locking device (440) is extended, the scraper plate (430) is locked and positioned from the inside; The locking device (440) is a hydraulic telescopic device. A hydraulic control device connected to the hydraulic telescopic device is provided inside the scraper positioning frame (410). The hydraulic control device is connected to the driving shaft (422). After the driving shaft (422) rotates to a predetermined position, the hydraulic telescopic device is controlled to be telescopic through the hydraulic control device.

2. The double-sided glue-coated composite inkjet printing paper production equipment according to claim 1, characterized in that: The glue coating device (300) comprises a glue coating mounting frame (310), the inside of which is rotatably connected to two glue coating rollers (320), the two glue coating rollers (320) being tightly pressed against each other, and a receiving groove for receiving glue is formed at the upper ends of the two glue coating rollers (320), and a glue coating channel for the outer coating film (110) to pass through is formed between the first glue coating roller (320) and the second auxiliary roller (240).

3. The double-sided glue-coated composite inkjet printing paper production equipment according to claim 1, characterized in that: The scraper plate (430) is arranged obliquely, and a scraper channel for the outer coating film (110) to pass through is formed between the end of the scraper plate (430) and the first auxiliary roller (230).

4. The double-sided glue-coated composite inkjet printing paper production equipment according to claim 3 is characterized in that: The scraper positioning frame (410) is columnar.

5. The double-sided glue-coated composite inkjet printing paper production equipment according to claim 1, characterized in that: The hydraulic control device comprises a pumping assembly for pumping liquid toward the hydraulic telescopic device, and a suction assembly for sucking liquid from the hydraulic telescopic device. When the driving shaft (422) drives the rubber scraper (430) to rotate to a side close to the hydraulic telescopic device, the suction assembly first sucks out the control oil in the hydraulic telescopic device to control its contraction. After a predetermined time, the pumping assembly then pumps the control oil into the hydraulic telescopic device to control its extension.

6. The double-sided glue-coated composite inkjet printing paper production equipment according to claim 1, characterized in that: A cleaning device (500) is also provided outside the scraper assembly (400), and the cleaning device (500) comprises a cleaning assembly (510) for cleaning the surface of the scraper plate (430), and also comprises a telescopic assembly (520) for controlling the telescopic movement of the cleaning assembly (510).

7. A method for producing double-sided glue-coated composite inkjet printing paper, characterized in that: The double-sided glue-coated composite inkjet paper production equipment according to any one of claims 1 to 6 comprises the following steps: S1, pulling the inner layer of paper (120) and the two outer layers of coating films (110) from a first side; S2, applying glue to the surface of the outer coating (110) by means of a glue coating device (300); S3, using the glue scraping component (400) to scrape the glue on the surface of the outer coating (110) flat; S4. The two outer coating films (110) are pressed onto the surface of the inner paper (120) from both sides by two pressing rollers (250) to form a composite printing paper (100).

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