Adjustable paperboard glueing machine

Abstract

The utility model provides a kind of adjustable paperboard glue brushing machine, it includes base, conveyer belt, glue roller, lifting mechanism, adjusting mechanism, conveyer belt is installed on base, the number of glue roller is two, straddles the top of conveyer belt and is rotationally arranged on base, lifting mechanism is installed on the both sides of base, drives glue roller to be close to or away from conveyer belt, adjusting mechanism is installed on lifting mechanism, adjust one of glue roller to be close to or away from another glue roller, glue pipe extending to the top of glue roller is provided on lifting mechanism.The utility model discloses adjustable paperboard glue brushing machine, lifting mechanism and adjusting mechanism are driven by motor, can be on-line continuously adjust glue height and roll distance, eliminate shutdown manual gasket operation, significantly shorten the time of change type;Worm and worm wheel pair self-locking and guide rail-sliding block guiding jointly act, ensure lifting and translation position stability, no drift in operation, glue layer thickness keeps uniform.

Description

Technical Field

[0001] This utility model relates to the technical field of cardboard processing equipment, and in particular to an adjustable cardboard gluing machine. Background Technology

[0002] In automated paperboard production lines, the pre-coating process plays a crucial role in evenly transferring adhesive to the paperboard surface, and its operational stability directly determines the cycle time of subsequent die-cutting, folding, and bonding. In recent years, the requirements for the frequency of packaging specification changes have increased significantly, and the order structure has shifted from "large batches of single gram weights" to "small batches of multiple thicknesses," forcing production lines to have minute-level changeover capabilities.

[0003] Existing production lines mostly adopt a double-roller scheme with "fixed center distance + overall elevation": positioning holes are machined on both sides of the frame, and the glue-coating roller bearing seats are locked with bolts. When changing the grammage of the cardboard, shims of different thicknesses are inserted manually or the entire roller frame is raised. Some models have vertical slots cut into the wall panels, and the bearing seats are manually pushed after the pressure plate is loosened to change the roller gap. This type of structure relies on manual measurement and repeated glue testing, and a single changeover takes more than ten minutes. Moreover, the roller gap is easily affected by vibration and drift after locking, causing fluctuations in glue weight.

[0004] The aforementioned manual intervention mode disrupted continuous production, and the discrepancies in gasket reserves and measurement further amplified the glue layer deviation, resulting in phenomena such as "uneven glue content, warping, or delamination of the same batch of cardboard," which became a bottleneck restricting the rapid switching of production lines according to orders. Utility Model Content

[0005] The purpose of this invention is to propose an adjustable cardboard glue application machine to solve the problems of low adjustment accuracy and reliance on manual operation during machine shutdown for glue layer thickness adjustment in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows: An adjustable cardboard glue applicator includes a base; a conveyor belt mounted on the base; two glue-applying rollers spanning the top of the conveyor belt and rotatably mounted on the base; a lifting mechanism mounted on both sides of the base to drive the glue-applying rollers closer to or further away from the conveyor belt; an adjustment mechanism mounted on the lifting mechanism to adjust one of the glue-applying rollers closer to or further away from the other; and a glue guide tube disposed on the lifting mechanism and extending to the top of the glue-applying rollers.

[0007] By adopting the above technical solution, the lifting mechanism and the adjusting mechanism can realize the electric continuous adjustment of the overall height of the coating roller and the distance between the two rollers, respectively. The thickness of the adhesive layer can be corrected online without stopping the machine, eliminating the error of manual padding and ensuring the stability of the adhesive weight.

[0008] Furthermore, the base is provided with glue grooves at both ends of the glue coating roller, and a flow channel is provided at the bottom of the glue groove inside the base, with one end of the flow channel extending out of the base and tilting downward.

[0009] By adopting the above technical solution, the excess glue at both ends is collected by the glue tank and then continuously returned through the diversion channel, which avoids glue accumulating on the base or dripping onto the ground, keeps the site clean, and realizes the recycling of glue.

[0010] Furthermore, the lifting mechanism includes a lifting machine that is vertically mounted on the base, a first connecting rod connecting the two lifting machines, and a first motor that drives the lifting machines to rotate. A movable seat is mounted on the lifting machine, and the glue-applying roller and the adjusting mechanism are mounted on the movable seat.

[0011] By adopting the above technical solution, a single motor synchronously drives the lifting machines on both sides via a connecting rod, ensuring that the lifting heights at both ends of the two rollers are consistent, and preventing uneven thickness of the rubber layer caused by skewness.

[0012] Furthermore, the hoist has a worm gear, a worm, and a screw, the worm gear and the worm mesh, the worm gear has a thread and is threadedly connected to the screw, and the movable seat is installed at the top of the screw.

[0013] By adopting the above technical solution, the worm gear pair has a built-in reverse self-locking mechanism. After the gear is raised or lowered to the correct position, it can withstand the roller pressure without additional locking, thus avoiding height drift during operation.

[0014] Furthermore, a guide rail is installed on the side wall of the base, and a slider is fixedly installed on the movable seat, with the slider slidably mounted on the guide rail.

[0015] By adopting the above technical solution, the guide rail-slider pair provides lateral constraint for the moving seat, ensuring smooth operation during the lifting process and reducing the impact of vibration on the adhesive layer.

[0016] Furthermore, the adjustment mechanism includes a bearing slidably mounted on the movable seat, with both ends of one of the glue-applying rollers passing through the bearing. A second motor is mounted on the movable seat to drive the bearing to move, and a stud is mounted on the second motor. A threaded hole is provided on the bearing for threaded connection with the stud.

[0017] By adopting the above technical solution, the displacement of the bearing seat can be precisely controlled by the motor-driven stud rotation, realizing continuous adjustment of the distance between the two rollers and ensuring real-time matching between the glue layer thickness and the paperboard weight.

[0018] Furthermore, a second link is also installed on the second motor, which is connected to an adjustment mechanism at the other end.

[0019] By adopting the above technical solution, a single motor synchronously drives the bearings at both ends via the second connecting rod, ensuring that the roller gap adjustment is consistent on both sides and avoiding abnormal rubber width caused by unilateral deviation.

[0020] Furthermore, a guide block is installed on the movable seat, and a guide groove is provided on the bearing seat for the guide block to be inserted.

[0021] By adopting the above technical solution, the guide block-guide groove pair provides linear guidance for the bearing with mounting, withstands the lateral force of the adhesive coating, prevents the bearing housing from wobbling, and improves the adjustment accuracy and service life.

[0022] Furthermore, a third motor is installed on each of the two coating rollers, and the two third motors drive the two coating rollers to rotate respectively.

[0023] By adopting the above technical solution, the independent drive of the two motors makes it easy to synchronize the linear speed of the two roller surfaces, reduce slippage, and ensure uniform glue transfer and consistent roller surface wear.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The adjustable cardboard gluing machine of this utility model features motor-driven lifting and adjustment mechanisms, allowing for continuous online adjustment of the gluing height and roller spacing. This eliminates the need for manual shim operation during downtime, significantly reducing changeover time. The self-locking worm gear pair and the guide rail-slider pair work together to ensure stable lifting and translation positions, preventing drift during operation and maintaining uniform glue layer thickness. The glue tanks at both ends and the inclined diversion trough enable automatic overflow glue recovery, avoiding glue waste and on-site pollution, and improving glue utilization. The dual motors independently drive the gluing rollers, ensuring high speed synchronization accuracy, uniform glue transfer, and reducing the risk of warping and glue separation defects. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0026] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the adjustable cardboard gluing machine described in this embodiment of the utility model; Figure 2 This is a schematic diagram of the glue tank portion according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the lifting mechanism described in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the first connecting rod fracture according to an embodiment of the present invention; Figure 5 This is an exploded view of the worm gear portion as described in an embodiment of the present invention; Figure 6 This is a schematic diagram of the adjustment mechanism and the coating roller as described in an embodiment of the present invention; Figure 7 This is an exploded view of the movable seat and the bearing with seat described in an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures: 1. Base; 2. Conveyor belt; 3. Glue application roller; 4. Lifting mechanism; 401. Hoist; 4011. Worm gear; 4012. Worm; 4013. Screw; 402. First connecting rod; 403. First motor; 404. Moving seat; 405. Slider; 406. Guide rail; 5. Adjustment mechanism; 501. Bearing with seat; 502. Screw hole; 503. Guide groove; 504. Second motor; 505. Stud; 506. Second connecting rod; 507. Guide block; 6. Glue guide tube; 7. Glue tank; 8. Drainage channel; 9. Third motor. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "back" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] This embodiment relates to an adjustable cardboard gluing machine, the overall structure of which is as follows: Figure 1As shown, it includes a base 1, a conveyor belt 2, a glue-applying roller 3, a lifting mechanism 4, and an adjusting mechanism 5.

[0033] The conveyor belt 2 is mounted on the base 1. There are two glue-applying rollers 3, which are straddled on the top of the conveyor belt 2 and rotatably mounted on the base 1. The lifting mechanism 4 is mounted on both sides of the base 1 to drive the glue-applying rollers 3 closer to or away from the conveyor belt 2. The adjusting mechanism 5 is mounted on the lifting mechanism 4 to adjust one of the glue-applying rollers 3 to move closer to or away from the other glue-applying roller 3. The lifting mechanism 4 is provided with a glue guide tube 6 extending to the top of the glue-applying roller 3.

[0034] It is worth mentioning that the conveyor belt 2 is a common conveying device in the prior art. In use, the cardboard is first placed on the conveyor belt 2, and the conveyor belt 2 drives the cardboard through the glue-applying roller 3. The glue-applying roller 3 applies glue to the cardboard, thus completing the glue application. The glue guide tube 6 is located between the two glue-applying rollers 3, and the glue flows between the two glue-applying rollers 3. When the glue-applying roller 3 rotates, the glue adheres to the entire glue-applying roller 3. When the cardboard passes by, the glue is applied to the cardboard. The lifting mechanism 4 can drive the two glue-applying rollers 3 to rise and fall, thereby achieving the application of cardboard of different thicknesses. The setting of the adjustment mechanism 5 can adjust the distance between the two glue-applying rollers 3. The greater the distance, the thicker the glue layer, and vice versa. This setting makes it convenient to adjust the thickness of the glue layer.

[0035] Based on the above overall introduction, an exemplary structure of this embodiment is as follows: Figure 2 As shown, glue troughs 7 are provided at both ends of the glue-applying roller 3 on the base 1. A guide trough 8 is provided at the bottom of the glue trough 7 inside the base 1. One end of the guide trough 8 extends out of the base 1, and the extended end is inclined downward. It should be noted that excess glue on the glue-applying roller 3 flows out from both ends. The glue troughs 7 are located at both ends of the glue-applying roller 3, and the flowing glue enters into the glue trough 7. The outlet of the glue trough 7 faces the top of the guide trough 8. The glue trough 7 guides the collected glue into the guide trough 8. Due to the inclined setting of the guide trough 8, the glue flows out from the extended end. A glue bucket is placed at the extended end of the guide trough 8, and the glue flows into the glue bucket for reuse.

[0036] As a preferred implementation method, such as Figure 3 , Figure 4 and Figure 5As shown, the lifting mechanism 4 in this embodiment includes a lifting machine 401 vertically mounted on the base 1, a first connecting rod 402 connecting the two lifting machines 401, and a first motor 403 driving the lifting machines 401 to rotate. A movable seat 404 is mounted on the lifting machine 401, and the glue-applying roller 3 and the adjusting mechanism 5 are mounted on the movable seat 404. Specifically, the lifting machine 401 is a common transmission device in the prior art, generally composed of a worm gear 4011, a worm 4012, and a screw 4013. The worm gear 4011 and the worm 4012 mesh, and the worm gear 4011 has a thread and is threadedly connected to the screw 4013. With this configuration, when the worm 4012 rotates, it drives the worm gear 4011 to rotate, and the worm gear 4011 drives the screw 4013 to perform lifting and lowering actions. The movable seat 404 is mounted on the top of the screw 4013, thereby realizing the lifting and lowering of the movable seat 404.

[0037] In addition, the first motor 403 is installed at one end of the worm gear 4012. After the motor is started, it can drive the screw 4013 to rotate. The first connecting rod 402 is installed at the other end of the worm gear 4012. This arrangement enables the first connecting rod 402 to drive the other hoist 401 to rise and fall, ensuring that both ends of the coating roller 3 can rise and fall simultaneously. A guide rail 406 is installed on the side wall of the base 1. A slider 405 is fixedly installed on the movable seat 404. The slider 405 is slidably mounted on the guide rail 406. When the screw 4013 rises and falls, the slider 405 on the movable seat 404 rises and falls along the guide rail 406. This arrangement can improve the stability of the movable seat 404.

[0038] As a preferred implementation method, such as Figure 6 and Figure 7 As shown, the adjustment mechanism 5 in this embodiment includes a seated bearing 501 slidably disposed on a movable seat 404. Both ends of a glue-applying roller 3 pass through the seated bearing 501. A second motor 504 is mounted on the movable seat 404 to drive the seated bearing 501 to move. A stud 505 is mounted on the second motor 504. A threaded hole 502 is opened on the seated bearing 501 to be threadedly connected to the stud 505. A second connecting rod 506 is also mounted on the second motor 504. The second connecting rod 506 is connected to the adjustment mechanism 5 at the other end.

[0039] It should be noted that a guide block 507 is installed on the movable seat 404, and a guide groove 503 is provided on the bearing 501 for the guide block 507 to be inserted. A reducer can be installed on the second motor 504. The input shaft of the reducer is connected to the drive shaft of the second motor 504. The two output ends of the reducer are respectively connected to the screw 4013 and the second connecting rod 506. When the motor drives the reducer to rotate, the stud 505 and the second connecting rod 506 rotate accordingly. The other end of the second connecting rod 506 is connected to the reducer of another adjusting mechanism 5. This arrangement ensures that the two bearings 501 can move simultaneously. Since the stud 505 is threadedly connected to the screw hole 502 on the bearing 501, the stud 505 drives the bearing shaft to move back and forth when it rotates, thereby realizing the distance adjustment of the two coating rollers 3. A third motor 9 is installed on each of the two coating rollers 3. The two third motors 9 drive the two coating rollers 3 to rotate, thereby realizing the coating operation of the cardboard.

[0040] In this embodiment, the adjustable cardboard gluing machine uses motor-driven lifting mechanism 4 and adjustment mechanism 5, allowing for continuous online adjustment of the gluing height and roller spacing. This eliminates the need for manual shim operation during downtime, significantly shortening changeover time. The self-locking worm gear 4011 and worm 4012, along with the guiding rail 406 and slider 405, ensure stable lifting and translation positions, preventing drift during operation and maintaining uniform glue layer thickness. The glue tanks 7 at both ends and the inclined diversion channel 8 enable automatic glue recovery, avoiding glue waste and on-site pollution, and improving glue utilization. The dual motors independently drive the gluing roller 3, ensuring high speed synchronization accuracy, uniform glue transfer, and reducing the risk of warping and glue separation defects.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable cardboard gluing machine, characterized in that, include: Base (1); A conveyor belt (2) is mounted on the base (1); Two glue-applying rollers (3) are laid across the top of the conveyor belt (2) and rotatably mounted on the base (1); The lifting mechanism (4) is installed on both sides of the base (1) to drive the glue-applying roller (3) to move closer to or away from the conveyor belt (2). An adjustment mechanism (5) is installed on the lifting mechanism (4) to adjust one of the glue-applying rollers (3) to move closer to or further away from the other glue-applying roller (3); The glue guide tube (6) is set on the lifting mechanism (4) and extends to the top of the glue coating roller (3).

2. The adjustable cardboard gluing machine according to claim 1, characterized in that: The base (1) is provided with glue grooves (7) at both ends of the glue roller (3), and a diversion groove (8) is provided at the bottom of the glue groove (7) inside the base (1). One end of the diversion groove (8) extends out of the base (1) and tilts downward.

3. The adjustable cardboard gluing machine according to claim 1, characterized in that: The lifting mechanism (4) includes a lifting machine (401) that is vertically arranged on the base (1), a first connecting rod (402) that connects the two lifting machines (401), and a first motor (403) that drives the lifting machine (401) to rotate. A movable seat (404) is provided on the lifting machine (401), and the glue roller (3) and the adjusting mechanism (5) are installed on the movable seat (404).

4. The adjustable cardboard gluing machine according to claim 3, characterized in that: The hoist (401) has a worm wheel (4011), a worm (4012) and a screw (4013). The worm wheel (4011) and the worm (4012) mesh. The worm wheel (4011) has a thread and is threaded to the screw (4013). The movable seat (404) is installed on the top of the screw (4013).

5. The adjustable cardboard gluing machine according to claim 4, characterized in that: A guide rail (406) is installed on the side wall of the base (1), and a slider (405) is fixedly installed on the movable seat (404). The slider (405) is slidably mounted on the guide rail (406).

6. The adjustable cardboard gluing machine according to claim 3, characterized in that: The adjustment mechanism (5) includes a seated bearing (501) slidably disposed on the movable seat (404), wherein both ends of one of the glue-applying rollers (3) pass through the seated bearing (501), a second motor (504) is installed on the movable seat (404) to drive the seated bearing (501) to move, a stud (505) is installed on the second motor (504), and a threaded hole (502) is provided on the seated bearing (501) to be threadedly connected to the stud (505).

7. The adjustable cardboard gluing machine according to claim 6, characterized in that: The second motor (504) is also equipped with a second link (506), which is connected to the adjustment mechanism (5) at the other end.

8. The adjustable cardboard gluing machine according to claim 6, characterized in that: A guide block (507) is installed on the movable seat (404), and a guide groove (503) is provided on the bearing seat (501) for the guide block (507) to be inserted.

9. The adjustable cardboard gluing machine according to claim 1, characterized in that: A third motor (9) is installed on each of the two coating rollers (3), and the two third motors (9) drive the two coating rollers (3) to rotate respectively.

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