Cardboard gluing device and gluing method

Abstract

The present invention relates to a cardboard gluing device, comprising a frame, and a paper loading mechanism, a deflection correction mechanism, a gluing mechanism, and a conveying mechanism sequentially mounted on the frame. The cardboard is transferred from the paper loading mechanism to the deflection correction mechanism, which adjusts the inserted cardboard to ensure that the cardboard and the gluing mechanism are perpendicular to each other before the cardboard enters the gluing mechanism, and then conveys the cardboard into the gluing mechanism. Glue is applied to any position of the cardboard in the gluing mechanism, and the glued cardboard is transferred to the conveying mechanism, which conveys the glued cardboard to the corresponding position. The deflection correction mechanism is located between the conveying mechanism and the paper loading mechanism, and the conveying mechanism is located on one side of the gluing mechanism and arranged on both sides of the gluing mechanism opposite to the deflection correction mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of cardboard gluing, in particular to a cardboard gluing device and a gluing method. Background Art

[0002] When paper is being glued, it is usually done by gluing the entire board. When partial gluing is required, manual gluing is used.

[0003] A Chinese patent application numbered 202010240290.2 discloses a cardboard gluing device. The cardboard gluing device includes a base, a feeding mechanism, a turning mechanism, a transfer mechanism, a gluing mechanism, and a unloading mechanism; the base is provided with a feeding station, a turning station, a gluing station, and an unloading station in sequence; the feeding mechanism is provided on the base and located at the feeding station; the turning mechanism is provided on the base and located at the turning station, for turning over the cardboard transferred from the feeding mechanism; the transfer mechanism is provided on the base and is used to transfer the cardboard from the turning station to the gluing station; the gluing mechanism is provided on the base and located at the gluing station, for gluing the cardboard; the unloading mechanism is provided on the base and located at the unloading station. The present invention effectively ensures the appearance quality of the cardboard and achieves a better molding effect. When the above-mentioned scheme is adopted, only full-page gluing of the cardboard can be achieved when gluing the cardboard.

[0004] A full-page gluing machine is disclosed in Chinese patent No. 202010913639.4, which includes a paper guide device, a gluing machine frame (300), a lower paper conveying mechanism (400), a gluing mechanism (500), a glue thickness adjustment mechanism (600), a glue basin installation mechanism (700), a synchronous belt (800), a chain (900), and a gluing pressure adjustment mechanism (10). By cooperating with the gluing mechanism, the glue thickness adjustment mechanism and the gluing pressure adjustment mechanism can not only squeeze out the excess glue, but also make the book cover close to the movement of the glue roller, so that the efficiency and quality of the book cover gluing are significantly improved; and by the lower paper adjustment mechanism and the paper drop guide mechanism, the book cover after gluing can be correctly placed in the position of the mounting board mechanism, ensuring smooth operation. Through the above technical solution, this technical solution also has the defects of the above-mentioned prior art when gluing the cardboard. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a cardboard gluing device and a gluing method, which can apply glue to any position of the cardboard through a gluing mechanism, thereby solving the problem that gluing can be performed at any position of the cardboard.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a cardboard gluing device, comprising a frame, and a paper feeding mechanism, a deflection correction mechanism, a gluing mechanism, and a conveying mechanism sequentially mounted on the frame; the deflection correction mechanism is located between the conveying mechanism and the paper feeding mechanism, and the conveying mechanism is located on one side of the gluing mechanism and is arranged on both sides of the gluing mechanism opposite to the deflection correction mechanism;

[0007] The paper feeding mechanism is used to transfer the paperboard to the deviation correcting mechanism.

[0008] The deflection correction mechanism is used to adjust the inserted cardboard to ensure that the cardboard is perpendicular to the gluing mechanism before entering the gluing mechanism and to transport the cardboard into the gluing mechanism;

[0009] The gluing mechanism is used to apply glue to any position of the cardboard and transfer the glued cardboard to the conveying mechanism.

[0010] The conveying mechanism is used to convey the cardboard that has been brushed with glue to a corresponding position.

[0011] As a preferred embodiment of the present invention, the paper feeding mechanism includes a loading rack fixedly mounted on the frame, a supporting device and a suction device located directly above the supporting device are fixedly mounted in the loading rack, a clamping device is provided between the supporting device and the suction device, the supporting device includes a supporting plate slidably mounted in the loading rack, the clamping device includes two connecting rods fixedly mounted in the loading rack and horizontally arranged; a clamping plate is adjustably mounted on the connecting rod, a clamping rod is fixedly mounted on the end of the clamping plate, and a rectangular elliptical hole is provided on the supporting plate for the clamping rod to move.

[0012] As a preferred embodiment of the present invention, the correcting mechanism includes a correcting frame installed on the frame, one end of the correcting frame is fixedly connected to the paper feeding mechanism, and the other end is fixedly connected to the gluing mechanism, a plurality of support rods are fixedly installed in the correcting frame, a feeding device is fixedly installed on the support rods, and an adjustment device is fixedly installed on the correcting frame; the feeding device includes a feeding frame fixedly installed on the support rods, a driving shaft is rotatably installed at both ends of the feeding frame, and a conveyor belt is sleeved on the driving shaft; an adsorption bellows is provided in the feeding frame, a plurality of suction holes are provided on the top surface of the adsorption bellows, and a plurality of through holes connected to the suction holes are provided on the conveyor belt.

[0013] As a preferred embodiment of the present invention, the adjustment device includes an adjustment frame fixedly mounted on the correction frame and two guide frames with identical structures slidably mounted on the support rod; the two guide frames are located on both sides of the feeding device, and an adjustment plate is fixedly mounted in the adjustment frame, and the adjustment plate is located directly above the conveyor belt, and a number of adjustment holes are evenly distributed on the adjustment plate, and a number of adjustment balls are provided in the adjustment holes; the guide frame includes a guide plate slidably mounted on the support rod, and a paper pressing plate is installed on the guide plate, and a guide opening is provided between the guide plate and the paper pressing plate, and the guide opening is adjacent to the paper feeding mechanism.

[0014] As a preferred embodiment of the present invention, the gluing mechanism includes a gluing seat fixedly mounted on the frame, the gluing seat is provided with a glue printing device and a glue storage device, the glue storage device is located above the paper feed side of the glue printing device, and the paper feed side is adjacent to the correction mechanism, the glue printing device includes two adjusting devices with identical structures and relatively arranged rotatably mounted in the gluing seat, a pressure roller is rotatably mounted between the two adjusting devices, a glue printing roller that rotates in the opposite direction to the pressure roller is provided just above the pressure roller, both ends of the glue printing roller are rotatably mounted on the gluing seat, the pressure roller and the glue printing roller are connected by a circular belt drive; at least one glue carrying belt flush with the surface of the glue printing roller is provided on the surface of the glue printing roller, and a number of glue carrying holes extending toward the axis of the glue printing roller are evenly distributed on the glue carrying belt.

[0015] As a preferred embodiment of the present invention, the adjusting device includes an adjusting plate rotatably mounted on the gluing seat and a limit seat fixedly mounted on the frame, the adjusting plate includes a transition rod and an adjusting rod fixedly connected in an "L" shape, and the pressure roller is rotatably mounted on the transition rod; the limit rod is threadedly connected to the limit seat, and one end of the limit rod is in contact with the adjusting rod.

[0016] As a preferred embodiment of the present invention, a paper lowering device is also fixedly installed on the glue-passing seat, and the paper lowering device and the glue storage device are located on both sides of the glue printing device. The glue storage device includes a glue trough fixedly installed on the glue seat, and a scraper is installed on the bottom plate of the glue trough. A scraper groove is provided on the scraper plate, and a scraper is installed in the scraper groove.

[0017] As a preferred embodiment of the present invention, the paper lowering device includes a paper lowering rod fixedly mounted on the gluing seat, the paper lowering rod is provided with two scraping assemblies corresponding to the printing rubber roller, and the scraping assembly is fixedly provided with a hook-shaped paper lowering scraper.

[0018] A gluing method includes a gluing mechanism, a deflection correction mechanism, and a signal detection device. The gluing mechanism includes a printing roller and a pressure roller, and the printing roller is provided with a tape. The signal detection device includes a first signal detection device PH1 fixedly mounted on the deflection correction mechanism for detecting the position of a paperboard, and a second signal detection device PH2 mounted on the gluing mechanism for detecting the gluing mechanism. The second signal detection device PH2 is located at the tangent point between the printing roller and the pressure roller. The specific steps are as follows:

[0019] SP1, set the distance L1 between the starting edge of the printing tape and the front side of the cardboard and the running speed V1 of the correction mechanism;

[0020] SP2, according to the rotation speed Vy of the printing roller in the gluing mechanism from the time when the front side of the initial cardboard passes the first signal detection device PH1 to the time when the initial cardboard starts to be glued in the gluing mechanism,

[0021] SP3: The time stamp when the front side of the initial cardboard contacts the first signal detection device PH1 is T1. The time stamp when the front side of the adjacent cardboard contacts the first signal detection device PH1 is T2. The distance Lx between the starting sides of the printed tape on the two adjacent cardboards is determined based on the time difference between T1 and T2 multiplied by the operating speed V1 of the correction mechanism. The calculation formula is Lx = (T2-T1)*V1;

[0022] SP4. Divide Lx in step SP3 by the operating speed V1 of the correcting mechanism to obtain the time Tx required for the starting edge of the printing tape on the adjacent cardboard to move to the second signal detection device PH2. Then, divide the circumference C of the circular arc of the printing tape by Tx to re-determine the rotation speed Vx of the printing tape roller in the laminating mechanism. The calculation formula is Vx = C / (Lx / V1).

[0023] As preferred embodiment of the present invention, SP2 includes the following steps:

[0024] SP21, the time stamp of the last time the starting edge of the adhesive tape on the printing roller passed the second signal detection device PH2 is Ta, and the time stamp of the initial contact of the front side of the paperboard with the first signal detection device PH1 is Tb. The arc length Cx of the rotating adhesive tape is calculated based on the time difference between Ta and Tb and the product of the current rotation speed V2 of the printing roller of the laminating mechanism. The calculation formula is: Cx = (Tb-Ta) * V1;

[0025] SP22, the distance L2 from the first signal detection device PH1 to the tangent line between the printing roller and the pressure roller is fixed, and the operating speed V1 of the correction mechanism is fixed. The time Tc required for the starting edge of the printing tape to move to the second signal detection device PH2 is calculated by dividing the sum of L2 and L1 by V1. The calculation formula is Tc = (L2 + L1) / V1;

[0026] SP23, re-determine the rotation speed of the printing rubber roller. If the arc length Cx is less than or equal to half the circumference C, the rotation speed Vy of the printing rubber roller is obtained by dividing the arc distance Cy in step SP4 by the time Tc in step SP3; the calculation formula is, Vy = (C-Cx) / Tc.

[0027] The beneficial effect of the present invention is that at least one adhesive tape flush with the surface of the printing roller is provided on the surface of the printing roller, so that glue can be applied to any position of the cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0029] Figure 2 It is the front view of the paper feeding mechanism of the present invention.

[0030] Figure 3 It is a three-dimensional schematic diagram of the deviation-correcting mechanism of the present invention.

[0031] Figure 4 It is a three-dimensional schematic diagram of the laminating mechanism of the present invention.

[0032] Figure 5 It is a cross-sectional view of the glue storage device of the present invention.

[0033] Figure 6 It is a schematic flow chart of the present invention.

[0034] Figure 7 It is a schematic flow chart of the speed of the rubber printing roller of the present invention.

[0035] Figure 8 It is a schematic diagram of the paperboard gluing process of the present invention.

[0036] Description of the accompanying figures: 1. Frame, 2. Paper feeding mechanism, 21. Loading rack, 22. Supporting device, 201. Loading shaft, 202. First driving gear, 203. Second driving gear, 204. Third driven gear, 205. Fourth driven gear, 206. First chain, 207. Second chain, 208. Supporting plate, 23. Clamping device, 209. Connecting rod, 210. Clamping plate, 211. Clamping rod, 212. Elliptical hole,

[0037] 3. Correction mechanism, 31. Correction frame, 32. Feeding device, 33. Adjustment device, 301. Feeding frame, 302. Drive shaft, 303. Conveyor belt, 304. Through hole, 305. Adjustment frame, 306. Guide frame, 307. Adjustment plate, 308. Adjustment hole, 309. Adjustment ball, 310. Support rod, 311. Guide plate, 312. Pressing paper board, 313. Guide port,

[0038] 4. Glue feeding mechanism, 41. Glue feeding seat, 42. Glue printing device, 43. Glue storage device, 44. Paper unloading device, 401. Pressing roller, 402. Glue printing roller, 403. Round belt, 404. Glue carrying belt, 405. Glue carrying hole, 406. Adjustment plate, 407. Limit seat, 408. Transition rod, 409. Adjustment rod, 410. Limit rod, 411. Pulley, 412. Synchronous wheel, 413. Glue trough, 414. Glue scraper, 415. Paper unloading rod, 416. Paper scraper assembly, 417. Paper unloading scraper, 418. Scraper groove, 419. Scraper, 5. Conveying mechanism. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] See also Figure 1-5 As shown, the present invention relates to a cardboard gluing device, comprising a frame 1, and a paper loading mechanism 2, a deflection correction mechanism 3, a gluing mechanism 4, and a conveying mechanism 5 sequentially mounted on the frame 1. The cardboard is transferred from the paper loading mechanism 2 to the deflection correction mechanism 3. The deflection correction mechanism 3 adjusts the inserted cardboard to ensure that the cardboard and the gluing mechanism 4 are perpendicular to each other before entering the gluing mechanism 4, and then conveys the cardboard into the gluing mechanism 4. Glue is applied to any position of the cardboard in the gluing mechanism 4, and the glued cardboard is transferred to the conveying mechanism 5. The conveying mechanism 5 conveys the glued cardboard to the corresponding position. The deflection correction mechanism 3 is located between the conveying mechanism 5 and the paper loading mechanism 2. The conveying mechanism 5 is located on one side of the gluing mechanism 4 and is arranged on both sides of the gluing mechanism 4 opposite the deflection correction mechanism 3.

[0041] See also Figure 1-2As shown, the paper feeding mechanism 2 includes a feeding rack 21 fixedly mounted on the frame 1, a supporting device 22 and a suction device located directly above the supporting device 22 are fixedly mounted in the feeding rack 21, a clamping device 23 is provided between the supporting device 22 and the suction device, the supporting device 22 includes a supporting plate 208 slidably mounted in the feeding rack 21, a feeding shaft 201 is rotatably mounted in the feeding rack 21, both ends of the feeding shaft 201 are connected to the feeding rack 21 through bearings to ensure that the feeding shaft 201 rotates in the feeding rack 21, and a first driving gear 202 and a second driving gear are fixedly mounted on the feeding shaft 201 Wheel 203, a third driven gear 204 adapted to the first drive gear 202 is rotatably mounted on one side of the loading frame 21, and a fourth driven gear 205 adapted to the second drive gear 203 is rotatably mounted on the other side of the loading frame 21. The third driven gear 204 and the fourth driven gear 205 are coaxially arranged. A first chain 206 is sleeved between the first drive gear 202 and the third driven gear 204, and a second chain 207 is sleeved between the second drive gear 203 and the fourth driven gear 205. A supporting plate 208 is fixedly mounted between the first chain 206 and the second chain 207. One side of the supporting plate 208 is fixedly connected to the first chain 206, and the other side is fixedly connected to the second chain 207. A drive motor that drives the loading shaft 201 to rotate is fixedly mounted on the loading frame 21, and the output end of the drive motor is fixedly connected to the loading shaft 201. When in use, place the cardboard on the supporting plate 208, start the driving motor to rotate the loading shaft 201, and the rotation of the loading shaft 201 drives the first chain 206 and the second chain 207 to move, so that the supporting plate 208 slides up and down in the loading rack 21, and the up and down movement of the stripping plate is achieved by controlling the forward and reverse rotation of the driving motor.

[0042] To ensure the neat stacking of cardboard on the support plate 208, the clamping device 23 includes two horizontally mounted connecting rods 209 fixedly mounted within the loading rack 21. Two clamping plates 210 are connected to the connecting rods 209 via support bearings. A fixed plate is fixedly attached to one side of each clamping plate 210. The fixed plate has a fixing hole that mates with the connecting rods 209. An expansion gap that extends through the fixing hole is provided on one side of the fixed plate. The fixed plate has threaded holes perpendicular to the expansion gap. Bolts are threaded into the threaded holes, narrowing the expansion gap and, in turn, the fixing hole, securing the clamping plates 210 to the connecting rods 209. Linear bearings allow the clamping plates 210 to slide on the connecting rods 209. After sliding to a set position, the clamping plates 210 are secured to the connecting rods 209 via the fixed plate. Thus, a clamping plate 210 is adjustably mounted on the connecting rod 209, with a clamping rod 211 fixedly mounted at the end of the clamping plate 210. The support plate 208 is provided with a rectangular elliptical hole 212 for the movement of the clamping rod 211. One end of the clamping rod 211 is fixedly connected to the clamping plate 210, and the other end passes through the support plate 208. When a cardboard is placed on the support plate 208, it is positioned between the two clamping rods 211. By adjusting the position of the clamping plate 210 on the connecting rod 209, the cardboard can be neatly stacked on the support plate 208.

[0043] It should be noted that the suction device described in the present invention can adopt the plate separating assembly and plate separating method disclosed in Chinese invention patent application number CN202210684028.6. The plate separating assembly includes a support frame, a vacuum suction cup installed in front of the support frame, a telescopic suction cover connected to the vacuum suction cup, and a resistance block installed in the rear of the support frame. The bottom surface of the resistance block is parallel to the horizontal plane, and the suction direction of the vacuum suction cup is inclined upward from front to back. Before the resistance block contacts the top surface of the plate and the vacuum suction cup generates negative pressure, the suction port of the telescopic suction cover is perpendicular to the suction direction of the vacuum suction cup, and the upper end of the suction port of the telescopic suction cover is lower than or at the same height as the bottom surface of the resistance block. After the vacuum suction cup generates negative pressure, the telescopic suction cover shrinks toward the vacuum suction cup until the lower end of the suction port of the telescopic suction cover is higher than the bottom surface of the resistance block. After the vacuum suction cup generates negative pressure, the cardboard can be separated by the support frame and the telescopic suction cover.

[0044] The suction device of the present invention can also adopt a panel loading device disclosed in Chinese utility model patent application number CN202221316259.3, which includes: a support frame, a suspension beam, a translation lifting device, and a vacuum suction cup hanger; the suspension beam is mounted on the support frame, and a translation slide rail is provided on the suspension beam. The translation lifting device includes a base, a translation mechanism, and a lifting mechanism. The base is provided with a first slider that cooperates with the translation slide rail. The base moves on the translation slide rail via the translation mechanism. The lifting mechanism is provided on the base, and the vacuum suction cup hanger is mounted on the lifting mechanism. The cardboard is separated and moved by the vacuum suction cup.

[0045] See also Figure 3 As shown, the deflection correction mechanism 3 includes a deflection correction frame 31, one end of which is fixedly connected to the paper feeding mechanism 2 and the other end to the gluing mechanism 4. Several support rods 310 are fixedly mounted within the deflection correction frame 31. Both ends of the support rods 310 are fixedly mounted to the deflection correction frame 31. A feeding device 32 is fixedly mounted on the support rods 310. An adjustment device 33 is fixedly mounted on the deflection correction frame 31. The adjustment device 33 is fixedly mounted on the deflection correction frame 31 and located above the feeding device 32. A cardboard is removed from the supporting device 22 by a suction device and fed into the feeding device 32. The feeding device 32 moves the cardboard toward the gluing mechanism 4. During this movement, the adjustment device 33 adjusts the cardboard's operating position accordingly, ensuring that the side panels of the cardboard are perpendicular to the gluing mechanism before it enters the gluing mechanism 4 for gluing.

[0046] The feeding device 32 includes a feeding frame 301 fixedly mounted on a support rod 310. Drive shafts 302 are rotatably mounted on both ends of the feeding frame 301 via bearings. A conveyor belt 303 is sleeved onto the drive shafts 302. A drive motor is installed at the bottom of the feeding frame 301 to drive the conveyor belt 303. To ensure the cardboard is stable on the conveyor belt, a suction bellows is installed within the feeding frame 301. The top surface of the suction bellows is provided with a number of suction holes. The conveyor belt 303 is provided with a number of through-holes 304 that connect to the suction holes. A negative pressure fan is fixedly installed within the frame 1 and is connected to the suction bellows. When the negative pressure fan is activated, it draws air from the surface of the conveyor belt 303, generating suction on the surface of the conveyor belt 303, stabilizing the cardboard on the conveyor belt 303 and allowing it to move along with the conveyor belt 303.

[0047] The adjustment device 33 comprises an adjustment frame 305 fixedly mounted on the deflection correction frame 31 and two identical guide frames 306 slidably mounted on support rods 310. The two guide frames 306 are located on either side of the feeder 32. An adjustment plate 307 is fixedly mounted within the adjustment frame 305. The adjustment plate 307 is positioned directly above the conveyor belt 303 and is evenly distributed with a number of adjustment holes 308, each of which contains a number of adjustment balls 309. When the conveyor belt 303 moves the cardboard toward the gluing mechanism 4, the cardboard is positioned between the adjustment plates 307 and the conveyor belt 303, maximizing the contact area between the cardboard and the conveyor belt 303. This ensures that even bent cardboard can contact the surface of the conveyor belt 303, thereby adsorbing the cardboard. The adjustment balls 309 on the adjustment plates 307 reduce friction between the plates 307 and the cardboard.

[0048] The guide frame 306 includes a guide plate 311 slidably mounted on a support rod 310. The guide plate 311 and the support rod 310 are connected via linear bearings. A paper pressing plate 312 is mounted on the guide plate 311. The paper pressing plate 312 includes a connecting plate fixedly mounted on the guide plate 311. The connecting plate is perpendicular to the laminating mechanism 4. A transition plate is fixedly mounted on the connecting plate, parallel to the conveyor belt 303. A nut holder is located in the middle of the guide plate 311. A drive screw is housed within the nut holder. One end of the drive screw is rotatably connected to the feed frame 301, and the other end is rotatably connected to the deflection correction frame 31. When the paperboard is tilted on the conveyor belt 303, the drive motor drives the drive screw to rotate, driving the guide plate 311 according to the width of the paper, thereby adjusting the distance between the two guide frames 306 to match the width of the paperboard. The two edges of the paperboard are located between the connecting plate and the guide plate 311 and contact the transition plate, thereby adjusting the paperboard's position. A guide opening 313 is provided between the guide plate 311 and the paper pressing plate 312. The guide opening 313 is adjacent to the paper feeding mechanism 2 and consists of a guide section, a transition section, and a connecting section. The transition section is provided at the end of the transition plate and extends upward. The connecting section is provided at the end of the connecting plate and extends toward the deflection correction frame 31. The guide section is provided at the end of the guide plate 311 and extends in the opposite direction of the transition section. By combining the guide opening 313, the paper feeding mechanism 2 can smoothly feed the paperboard from the guide opening 313 to the conveyor belt 303, thereby avoiding paper jams during the paper feeding process.

[0049] See also Figure 4-5As shown, the gluing mechanism 4 includes a gluing base 41 fixedly mounted on the frame 1. The gluing base 41 is provided with a glue printing device 42 and a glue storage device 43. The glue storage device 43 is located above the paper feed side of the glue printing device 42, adjacent to the correcting mechanism 4. The glue printing device 42 includes two identical adjustment devices rotatably mounted within the gluing base 41 and arranged opposite to each other. A pressure roller 401 is rotatably mounted between the two adjustment devices. A glue printing roller 402 is located directly above the pressure roller 401 and rotates in the opposite direction to the pressure roller 401. Both ends of the glue printing roller 402 are rotatably mounted on the gluing base 41 via bearings. The pressure roller 401 and the glue printing roller 402 are connected to each other via a circular belt 403. At least one glue carrying belt 404 is provided on the surface of the glue printing roller 402, which is flush with the surface of the glue printing roller 402. The glue carrying belt 404 is evenly distributed with a plurality of glue carrying holes 405 extending toward the axis of the glue printing roller 402. It should be noted that when more than two printing tapes need to be printed on the same cardboard, the surface of the printing roller 402 is provided with the same number of carrying tapes 404 as the printing tapes, and the arc length distance between two adjacent carrying tapes 404 is equal to the straight-line distance between two adjacent printing tapes.

[0050] By setting a driving motor on the gluing seat 41 to drive the printing roller 402 to rotate, the correction mechanism 4 sends the cardboard to the paper feeding side of the printing device 42. Since the printing roller 402 and the pressure roller 401 rotate in opposite directions, the cardboard passes between the pressure roller 401 and the printing roller 402 and moves toward the conveying mechanism 5. Glue is placed in the glue storage device 43. When the printing roller 402 rotates, the glue carrying holes 405 on the adhesive tape 404 carry glue and rotate toward the pressure roller 401. When the cardboard passes between the printing roller 402 and the pressure roller 401, the glue carried in the glue carrying holes 405 is transferred to the cardboard, completing the gluing of the cardboard.

[0051] The adjustment device includes an adjustment plate 406 rotatably mounted on the gluing base 41 and a limit seat 407 fixedly mounted on the frame 1. One end of the adjustment plate 406 abuts the limit seat 407, and the other end is rotatably connected to the pressure roller 401 via a bearing. The adjustment plate 406 includes a transition rod 408 and an adjustment rod 409 fixedly connected in an L-shape. The pressure roller 401 is rotatably mounted on the transition rod 408 via a bearing. A rotation hole is defined at the connection between the transition rod 408 and the adjustment rod 409. A rotation shaft is disposed within the rotation hole and is fixedly mounted on the gluing base 41. The rotation shaft and the rotation hole cooperate to enable the adjustment plate 406 to be rotatably mounted on the gluing base 41. A limit rod 410 is threadedly connected to the limit seat 407, one end of which abuts the adjustment rod 409. Because the limiting rod 410 is threadedly connected to the limiting seat 407, when the limiting rod 410 moves toward the conveying mechanism 5, it pushes the adjustment plate 406 to rotate, causing the transition rod 408 to rotate toward the rubber rollers 402, thereby reducing the gap between the rubber rollers 402. Conversely, when the limiting rod 410 moves away from the conveying mechanism 5, the transition rod 408 rotates away from the rubber rollers 402, thereby increasing the gap between the rubber rollers 402. This adjusts the gap between the rubber rollers 402 and the pressure roller 401.

[0052] To ensure counter-rotation between the printing roller 402 and the pressure roller 401, pulleys 411 are installed at both ends of the printing roller 402 and the pressure roller 401. Below the pulleys 411 is a synchronous pulley 412, which is fixedly mounted on the laminating base 41. A circular belt 403 is mounted over the synchronous pulley 412 and the pulley 411 of the printing roller 402. The outer surface of the circular belt 403 is in contact with the pulley 411 of the pressure roller 401. The rotation of the printing roller 402 drives the circular belt 403, which, due to the outer surface of the circular belt 403 in contact with the pulley 411 of the pressure roller 401, causes the printing roller 402 and the pressure roller 401 to rotate in counter-rotation.

[0053] A paper unloading device 44 is also fixedly mounted on the gluing station 41. The paper unloading device 44 and the glue storage device 43 are located on either side of the glue printing device 42. The paper unloading device 44 includes a paper unloading rod 415 fixedly mounted on the gluing station 41. The rod 415 is equipped with two scraper assemblies 416 corresponding to the glue printing roller 402. The scraper assemblies 416 are fixedly mounted with flexible hook-shaped scrapers 417. The scraper blades are made of silicone. A gap is provided between the scraper 417 and the glue printing roller 402. The scraper 417 removes any paperboard stuck to the glue printing roller 402, ensuring that all paperboards, after gluing, enter the conveyor mechanism 5.

[0054] The glue storage device 43 includes a glue tank 413 fixedly mounted on the glue seat 41, a scraper plate 414 is mounted on the bottom plate of the glue tank 413, a scraper groove 418 is provided on the scraper plate 414, and a scraper 419 is mounted in the scraper groove 418; the scraper 419 is made of silicone material.

[0055] It should be noted that the conveying mechanism 5 and the feeding device 42 in the correction device have the same structure, and will not be described in detail here.

[0056] See also Figure 5-8 As shown, in order to enable the gluing mechanism 4 to gluing at any position on the paperboard, the present invention also provides a gluing method, comprising a gluing mechanism 4, a deflection correction mechanism 3, and a signal detection device. The gluing mechanism 4 comprises a printing roller 402 and a pressure roller 401, and the printing roller 402 is provided with a tape 404. The signal detection device comprises a first signal detection device PH1 fixedly mounted on the deflection correction mechanism 3 for detecting the position of the paperboard, and a second signal detection device PH2 mounted on the gluing mechanism 4 to detect the gluing mechanism 4. The second signal detection device PH2 is located at the tangent point between the printing roller 402 and the pressure roller 401. The specific steps are as follows:

[0057] SP1, set the distance L1 between the starting edge of the printed tape and the front side of the cardboard and the running speed V1 of the correction mechanism 3;

[0058] SP2, according to the rotation speed Vy of the printing roller in the gluing mechanism from the time when the front side of the initial cardboard passes through the first signal detection device PH1 to the time when the initial cardboard starts to be glued in the gluing mechanism 4,

[0059] SP3: The time stamp when the front side of the initial cardboard contacts the first signal detection device PH1 is T1. The time stamp when the front side of the adjacent cardboard contacts the first signal detection device PH1 is T2. The distance Lx between the starting sides of the printed tape on the two adjacent cardboards is determined based on the product of the time difference between T1 and T2 and the operating speed V1 of the correction mechanism 3. The calculation formula is: Lx = (T2-T1)*V1;

[0060] SP4. Divide Lx in step SP3 by the operating speed V1 of the correcting mechanism 3 to obtain the time Tx required for the starting edge of the printing tape on the adjacent cardboard to move to the second signal detection device PH2. Then, divide the circumference C of the arc of the printing tape roller 402 by Tx to re-determine the rotation speed Vx of the printing tape roller 402 in the laminating mechanism 4. The calculation formula is Vx = C / (Lx / V1).

[0061] SP2 includes the following steps,

[0062] SP21, the time stamp of the last time the starting edge of the adhesive tape 404 on the printing roller 402 passed the second signal detection device PH2 is Ta, and the time stamp of the initial contact of the front side of the paperboard with the first signal detection device PH1 is Tb. The arc length Cx of the rotation of the adhesive tape 404 is calculated based on the time difference between Ta and Tb and the product of the current rotation speed V2 of the printing roller 402 of the laminating mechanism 4; the calculation formula is Cx = (Tb-Ta)*V1;

[0063] SP22, the distance L2 from the first signal detection device PH1 to the tangent line between the printing roller 402 and the pressure roller 401 is fixed, and the operating speed V1 of the correction mechanism 3 is fixed. The time Tc required for the starting edge of the printing tape to move to the second signal detection device PH2 is calculated by dividing the sum of L2 and L1 by V1. The calculation formula is Tc = (L2 + L1) / V1;

[0064] In step SP23, the rotational speed of the printing roller 402 is re-determined. If the arc length Cx is less than or equal to half the circumference C, the rotational speed Vy of the printing roller 402 is calculated by dividing the arc distance Cy in step SP4 by the time Tc in step SP3. The calculation formula is Vy = (C - Cx) / Tc.

[0065] If the arc length Cx is greater than half the circumference C, the rotation speed Vx of the printing roller 402 is obtained by dividing the sum of the arc distance Cy in step SP4 and the circumference C of the printing roller 402 by the time T1 in step SP3, and the printing roller 4021 rotates at the speed Vx; Vy = [C + (C - Cx)] / Tc.

[0066] It should be noted that the timestamps mentioned above are all millisecond-level timestamps. Before printing begins on the first cardboard (the initial cardboard), step SP2 ensures the first cardboard is positioned accurately during the initial glue printing. Steps SP3 and SP4 ensure the subsequent cards (adjacent cards) are positioned accurately during the glue printing.

[0067] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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, and therefore cannot be understood as a limitation on the present invention.

[0068] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0069] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A gluing method, characterized in that: The system includes a laminating mechanism, a deflection correction mechanism, and a signal detection device. The laminating mechanism includes a printing roller and a pressure roller, and the printing roller is provided with a tape. The signal detection device includes a first signal detection device PH1 fixedly installed on the deflection correction mechanism for detecting the position of the paperboard, and a second signal detection device PH2 installed on the laminating mechanism to detect the laminating mechanism. The second signal detection device PH2 is located at the tangent point between the printing roller and the pressure roller. The specific steps are as follows: SP1, set the distance L1 between the starting edge of the printing tape and the front side of the cardboard and the running speed V1 of the correction mechanism; SP2, according to the rotation speed Vy of the printing roller in the gluing mechanism from the time when the front side of the initial cardboard passes the first signal detection device PH1 to the time when the initial cardboard starts to be glued in the gluing mechanism, SP3: The time stamp when the front side of the initial cardboard contacts the first signal detection device PH1 is T1. The time stamp when the front side of the adjacent cardboard contacts the first signal detection device PH1 is T2. The distance Lx between the starting sides of the printed tape on the two adjacent cardboards is determined based on the time difference between T1 and T2 multiplied by the operating speed V1 of the correction mechanism. The calculation formula is Lx = (T2-T1)*V1; SP4. Divide Lx in step SP3 by the operating speed V1 of the correcting mechanism to obtain the time Tx required for the starting edge of the printing tape on the adjacent cardboard to move to the second signal detection device PH2. Then, divide the circumference C of the circular arc of the printing tape by Tx to re-determine the rotation speed Vx of the printing tape roller in the laminating mechanism. The calculation formula is Vx = C / (Lx / V1).

2. The gluing method according to claim 1, wherein: SP2 includes the following steps, SP21: The time stamp of the last time the starting edge of the adhesive tape on the printing roller passed the second signal detection device PH2 is Ta. The time stamp of the initial contact of the front side of the paperboard with the first signal detection device PH1 is Tb. The arc length Cx of the rotating adhesive tape is calculated based on the time difference between Ta and Tb multiplied by the current rotation speed V2 of the printing roller of the laminating mechanism. The calculation formula is: Cx = (Tb-Ta) * V1; SP22, the distance L2 from the first signal detection device PH1 to the tangent line between the printing roller and the pressure roller is fixed, and the operating speed V1 of the correction mechanism is fixed. The time Tc required for the starting edge of the printing tape to move to the second signal detection device PH2 is calculated by dividing the sum of L2 and L1 by V1. The calculation formula is Tc = (L2 + L1) / V1; In step SP23, the rotational speed of the rubber roller is re-determined. If the arc length Cx is less than or equal to half the circumference C, the rotational speed Vy of the rubber roller is calculated by dividing the arc distance Cy in step SP4 by the time Tc in step SP3. The calculation formula is Vy = (C - Cx) / Tc. If the arc length Cx is greater than half the circumference C, the rotation speed Vx of the rubber roller is obtained by dividing the sum of the arc distance Cy in step SP4 and the circumference C of the rubber roller by the time T1 in step SP3, and the rubber roller rotates at the speed Vx; Vy = [C + (C - Cx)] / Tc.

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