Multi-layer corrugated board gluing device

Abstract

The utility model relates to a multi-layer corrugated board gluing device which comprises a conveying frame and a mounting frame arranged on the conveying frame, a gluing wheel is arranged on the mounting frame, a plurality of glue outlet holes are formed in the gluing wheel at intervals in the axial direction of the gluing wheel, sealing sleeves are arranged at the two ends of the gluing wheel in a sleeved mode, and the glue outlet holes are communicated with the sealing sleeves. The sealing sleeve comprises an outer sleeve and inner sleeves telescopically connected in the outer sleeve, the positions of the inner sleeves are adjusted through the driving mechanism so as to adjust the number of the exposed glue outlet holes, the two end faces of the gluing wheel abut against the bottom side of the interior of the outer sleeve respectively, and the two sides of the paperboard make contact with the front ends of the two inner sleeves respectively. According to the multi-layer corrugated board gluing device, paperboards with different width sizes can be glued on the premise that glue is not wasted, meanwhile, the paperboards can be limited, and the situation that the gluing effect is affected due to the fact that the paperboards deviate in the gluing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard production, in particular to a glue coating device for multi-layer corrugated cardboard. Background Art

[0002] Corrugated cardboard has good elasticity and extensibility, and can withstand collisions and drops during handling. It is mainly used to manufacture cartons, the sandwich of cartons, and other packaging materials for fragile goods. Corrugated cardboard is a multi-layer adhesive body, which is at least composed of a layer of wavy core paper sandwich and a layer of cardboard bonded together. In the production process of corrugated cardboard, a glue coating device is needed to perform glue coating operations on the cardboard. Currently, on the market, a glue coating wheel is usually used to coat the cardboard. Multiple glue outlet holes are opened on the glue coating wheel, and the glue in the glue storage tank is transported to the glue coating wheel through a connecting pipe and flows out through the glue outlet holes to the upper side of the cardboard. However, the existing glue coating devices still have some deficiencies: the number of glue outlet holes on the glue coating wheel is fixed and cannot adapt to cardboard of different width dimensions. Moreover, during the glue coating process, the cardboard may shift, affecting the glue coating effect. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a glue coating device for multi-layer corrugated cardboard, which can coat cardboard of different width dimensions without wasting glue, and at the same time can limit the cardboard to prevent it from shifting during the glue coating process and affecting the glue coating effect.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a glue coating device for multi-layer corrugated cardboard, including a conveying frame and a mounting frame arranged on the conveying frame. A glue coating wheel is provided on the mounting frame. A plurality of glue outlet holes are arranged on the glue coating wheel at intervals along its axial direction. Sealing sleeves are sleeved at both ends of the glue coating wheel. The sealing sleeve includes an outer sleeve pipe and an inner sleeve pipe telescopically connected inside the outer sleeve pipe. The position of the inner sleeve pipe is adjusted by a driving mechanism to adjust the number of exposed glue outlet holes. The two end faces of the glue coating wheel are respectively in contact with the bottom side inside the outer sleeve pipe, and both sides of the cardboard are respectively in contact with the front ends of the two inner sleeve pipes.

[0005] Compared with the prior art, the beneficial effects of this solution are as follows: Before the glue coating operation, the position of the inner sleeve pipe on the glue coating wheel is adjusted according to the specific width dimension of the cardboard, so as to adjust the number of exposed glue outlet holes on the glue coating wheel to adapt to cardboard of different width dimensions, thereby avoiding waste of glue; moreover, the front ends of the two inner sleeve pipes are respectively in contact with both sides of the cardboard to limit the cardboard and prevent it from shifting during the glue coating process and affecting the glue coating effect.

[0006] As a preferred embodiment of the present utility model, an installation table is provided on the mounting frame. The driving mechanism includes a double-acting cylinder provided on the installation table. Connecting plates are connected to the piston rods on both sides of the double-acting cylinder, and the two connecting plates are respectively fixedly connected to the outer edges of the front ends of the two inner sleeves.

[0007] Beneficial effects of this solution: The two inner sleeves are driven by the double-acting cylinder to move along the axial direction of the glue application wheel. Compared with arranging the cylinder inside the outer sleeve, arranging the double-acting cylinder on the installation table has a reasonable structure and can prevent the cylinder from being contaminated by the glue located inside the outer sleeve, affecting the operation of the cylinder.

[0008] As a preferred embodiment of the present utility model, a recovery pump is provided on the top of the mounting frame. First through holes are provided on the outer edges of each outer sleeve, and first connecting pipes are respectively connected to the two first through holes. The two first connecting pipes both pass through the recovery pump and extend into the glue storage tank.

[0009] Explanation: A glue storage tank is provided on one side of the conveying frame. A second connecting pipe is connected to the glue storage tank, and the second connecting pipe passes through a pump body provided on the upper side of the glue storage tank and is connected to the glue application wheel.

[0010] Beneficial effects of this solution: During the glue application process, part of the glue enters the sealing sleeve through the glue outlet hole located inside the sealing sleeve. Through the recovery pump and the first connecting pipe provided on the outer sleeve, the glue located inside the sealing sleeve is recovered into the glue storage tank for glue application to the cardboard, which can save glue.

[0011] As a preferred embodiment of the present utility model, first sliding grooves are provided on the inner sides of the two vertical frames. On the side of each outer sleeve away from the inner sleeve, a first slider for sliding cooperation with the first sliding groove is provided. The first slider is threadedly connected to the mounting frame through a screw rod. The upper end of the screw rod extends out of the cross frame, and the two connecting plates are both telescopic sleeve plates.

[0012] Beneficial effects of this solution: The first slider on one side of the outer sleeve is in sliding cooperation with the first sliding groove on the inner side of the vertical frame, and the connecting plate is a telescopic sleeve plate. When performing glue application operations on cardboard with different thicknesses and sizes, the height of the sealing sleeve and the glue application wheel can be adjusted by rotating the screw rod to adapt to cardboard with different thicknesses and sizes, and the adaptability is better.

[0013] As a preferred embodiment of the present utility model, a leveling assembly for leveling the glue on the cardboard is further provided on the mounting frame. The leveling assembly is arranged behind the glue application wheel. The leveling assembly includes two connecting blocks provided on the mounting frame and a leveling plate located between the two connecting blocks.

[0014] Beneficial effects of this solution: Glue overflows from the glue outlet holes on the glue application wheel and is applied to the cardboard. There is an uneven application situation. When the cardboard moves to below the smoothing plate along the conveying rack after being coated with glue by the glue application wheel, the glue on the cardboard is smoothed by the smoothing plate, thereby achieving a better glue application effect.

[0015] As a preferred embodiment of the present utility model, second chutes are respectively provided at the rear sides of the two vertical frames. Second sliders for slidingly cooperating with the second chutes are respectively provided on the two connecting blocks. A plurality of first connection holes are arranged at intervals in the vertical direction on both vertical frames. Second connection holes are provided on both second sliders. The connecting blocks are fixed to the mounting rack by a locking member passing through the first connection holes and the second connection holes.

[0016] Beneficial effects of this solution: When performing glue application operations on cardboard with different thickness dimensions, adjust the height of the smoothing plate according to the specific thickness dimension of the cardboard to adapt to cardboard with different thickness dimensions, and cooperate with the glue application wheel to perform a smoothing operation on the glue on the cardboard. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of an embodiment of the multi-layer corrugated cardboard glue application device of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of another angle of the multi-layer corrugated cardboard glue application device of the present utility model.

[0019] Figure 3 It is Figure 1 a schematic structural diagram of the mounting rack in

[0020] Figure 4 It is Figure 1 a schematic structural diagram of the sealing sleeve in Specific Embodiments

[0021] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the described preferred embodiments are only used to explain the present utility model and will not limit the protection scope of the present utility model.

[0022] Terms such as "first" and "second" in the specification, claims, and embodiments of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0023] The present utility model will be further described in detail below through preferred specific embodiments:

[0024] The reference numerals in the accompanying drawings of the specification include: conveying rack 1, mounting rack 2, cross rack 3, first threaded hole 301, second through hole 302, vertical rack 4, first sliding groove 401, second sliding groove 402, first connection hole 403, glue applying wheel 5, sealing sleeve 6, outer sleeve 601, inner sleeve 602, first slider 7, second threaded hole 701, second slider 8, mounting table 9, connecting plate 10, recovery pump 11, first connecting pipe 12, pump body 13, second connecting pipe 14, glue storage tank 15, screw rod 16, leveling plate 17, connecting block 18, driving mechanism 19, cardboard 20.

[0025] As shown in the Figure 1 and the Figure 3 accompanying drawings: The glue applying device for multi-layer corrugated cardboard of this embodiment includes a conveying rack 1 and a mounting rack 2 arranged on the conveying rack 1. The mounting rack 2 is a portal frame, including a cross rack 3 and vertical racks 4 respectively vertically arranged below both sides of the cross rack 3. A recovery pump 11 is provided at the top of the cross rack 3. An installation table 9 is provided in the middle at the bottom of the cross rack 3. Two first threaded holes 301 and two second through holes 302 are symmetrically arranged on both sides at the top of the cross rack 3 respectively. First sliding grooves 401 are provided on the inner sides of the two vertical racks 4, and second sliding grooves 402 are provided on the rear sides of the two vertical racks 4 respectively. In this embodiment, along the conveying direction of the conveying rack 1, the side where the cardboard 20 passes first is the front side of the vertical rack 4, and the side where the cardboard 20 passes later is the rear side of the vertical rack 4.

[0026] A glue applying wheel 5 is provided on the mounting rack 2. A plurality of glue outlet holes are arranged at intervals along the axial direction of the glue applying wheel 5. A glue storage tank 15 for storing glue is further provided on one side of the conveying rack 1. A second connecting pipe 14 is communicated with the glue storage tank 15. The second connecting pipe 14 passes through a pump body 13 arranged on the upper side of the glue storage tank 15 and is communicated with the glue applying wheel 5. In this embodiment, the second connecting pipe 14 is arranged in the middle of the glue applying wheel 5. Therefore, the glue entering the glue applying wheel 5 through the second connecting pipe 14 will flow from the middle of the glue applying wheel 5 to both sides of it. Compared with arranging the second connecting pipe 14 on one side of the glue applying wheel 5, arranging the second connecting pipe 14 in the middle of the glue applying wheel 5 can avoid excessive accumulation of glue in the sealing sleeve 6.

[0027] As shown in the Figure 1 and the Figure 4As shown in the figure: Sealing sleeves 6 are sleeved at both ends of the glue - applying wheel 5. The sealing sleeve 6 includes an outer sleeve tube 601 and an inner sleeve tube 602 telescopically connected within the outer sleeve tube 601. The two end faces of the glue - applying wheel 5 respectively abut against the bottom sides inside the outer sleeve tube 601. The two sides of the cardboard 20 respectively contact the front ends of the two inner sleeve tubes 602. First sealing rings and second sealing rings (not shown in the figure) are respectively provided on the inner sides of the front ends of the outer sleeve tube 601 and the inner sleeve tube 602. The first sealing ring and the second sealing ring are respectively in close fit with the outer edge of the inner sleeve tube 602 and the outer edge of the glue - applying wheel 5, so that the outer sleeve tube 601 and the inner sleeve tube 602 and the sealing sleeve and the glue - applying wheel 5 are respectively kept in a sealed state. The position of the inner sleeve tube 602 is adjusted by the driving mechanism 19 to adjust the number of exposed glue - discharging holes. The driving mechanism 19 includes a double - acting cylinder provided on the mounting table 9. Connecting plates 10 are connected to the piston rods on both sides of the double - acting cylinder. The two connecting plates 10 are both telescopic sleeve plates. In this embodiment, the connecting plate 10 includes an outer sleeve plate and an inner sleeve plate located inside the outer sleeve plate and slidably matched with it. The two inner sleeve plates are respectively fixedly connected to the outer edges of the front ends of the two inner sleeve tubes 602.

[0028] As shown in the Figure 1 and Figure 4 figure: First through - holes are provided on the outer edge of each outer sleeve tube 601 (not shown in the figure). First connecting tubes 12 are respectively connected to the two first through - holes. In this embodiment, the first connecting tubes 12 and the second connecting tubes 14 are both flexible tubes. The two first connecting tubes 12 both pass through the recovery pump 11 and extend into the glue storage tank 15. A first slider 7 for slidably matching with the first chute 401 is provided on one side of each outer sleeve tube 601 away from the inner sleeve tube 602. A second threaded hole 701 is provided on the first slider 7. The first slider 7 and the mounting frame 2 are threadedly connected by a screw rod 16. The screw rod 16 sequentially passes through the first threaded hole 301 on the cross - frame 3 and the second threaded hole 701 on the first slider 7. The upper end of the screw rod 16 extends out of the cross - frame 3.

[0029] As shown in the Figure 2 figure: A smoothing component for smoothing the glue on the cardboard 20 is further provided on the mounting frame 2. The smoothing component is arranged behind the glue - applying wheel 5. The smoothing component includes two connecting blocks 18 respectively arranged on the two vertical frames 4 and a smoothing plate 17 located between the two connecting blocks 18. Second sliders 8 for slidably matching with the second chute 402 are respectively provided on the two connecting blocks 18. A plurality of first connecting holes 403 are arranged at intervals in the vertical direction on the two vertical frames 4. Second connecting holes (not shown in the figure) are provided on the two second sliders 8. The connecting blocks 18 are fixed to the mounting frame 2 by locking parts passing through the first connecting holes 403 and the second connecting holes. The locking parts in this embodiment are preferably set as bolts.

[0030] Specific operation process:

[0031] Before gluing the cardboard 20 of the same batch, adjust the device according to the specific width and thickness dimensions of the cardboard 20 to adapt to cardboard 20 with different width and thickness dimensions. First, adjust the position of the inner sleeve 602 according to the specific width dimension of the cardboard 20. Since both sides of the connecting plate 10 are respectively connected to the piston rod of the double-acting cylinder and the outer edge of the inner sleeve 602, the double-acting cylinder drives the inner sleeves 602 on both sides to move towards or away from each other along the axial direction of the glue applicator wheel 5, so as to adjust the number of glue outlet holes exposed on the glue applicator wheel 5. At the same time, the front ends of the two inner sleeves 602 are respectively in contact with both sides of the cardboard 20 to limit the width direction of the cardboard 20.

[0032] Then, synchronously adjust the heights of the sealing sleeve 6 and the glue applicator wheel 5 according to the specific thickness dimension of the cardboard 20. The specific steps are as follows: Rotate the screw 16 part extending out of the cross frame 3 to drive the first slider 7 to slide up and down along the first chute 401, so as to drive the sealing sleeve 6 and the glue applicator wheel 5 to move up and down. After adjusting the positions of the sealing sleeve 6 and the glue applicator wheel 5, loosen the bolt located at the rear side of the vertical frame 4 until it exits the first connection hole 403, and then slide the second slider 8 along the second chute 402, so as to drive the leveling plate 17 to move up and down until the lower side of the leveling plate 17 can be in contact with the upper side of the cardboard 20. After adjustment, pass the bolt through another first connection hole 403 to fix the leveling component on the mounting frame 2 to complete the adjustment.

[0033] The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. The typical well-known structures and common general knowledge technologies in the preferred embodiments are not described in detail here. Those of ordinary skill in the art can, under the inspiration given by this embodiment, combine their own abilities to complete and implement the technical solution of the present utility model. Some typical well-known structures, well-known methods or common general knowledge technologies should not become an obstacle for those of ordinary skill in the art to implement the present application.

[0034] The scope of protection required by the present application should be subject to the content of its claims. The content recorded in the utility model content, specific implementation manners and the drawings of the description is used to explain the claims.

[0035] Within the scope of the technical concept of the present application, several variants can also be made to the specific implementation manners of the present application, and these variant specific implementation manners should also be regarded as within the scope of protection of the present application.

Claims

1. A multi-layer corrugated board gluing device, comprising a conveying frame and a mounting frame arranged on the conveying frame, wherein a gluing wheel is provided on the mounting frame, and a plurality of glue outlet holes are arranged on the gluing wheel at intervals along its axial direction, and it is characterized in that: Sealing sleeves are sleeved at both ends of the glue application wheel. The sealing sleeve includes an outer sleeve pipe and an inner sleeve pipe that is telescopically connected inside the outer sleeve pipe. The position of the inner sleeve pipe is adjusted by a driving mechanism to adjust the number of exposed glue outlet holes. The two end faces of the glue application wheel are respectively abutted against the bottom side inside the outer sleeve pipe, and both sides of the cardboard are respectively in contact with the front ends of the two inner sleeve pipes.

2. The multi-layer corrugated cardboard gluing device according to claim 1, characterized in that: An installation platform is provided on the installation frame. The driving mechanism includes a double-acting cylinder arranged on the installation platform. Connecting plates are connected to the piston rods on both sides of the double-acting cylinder, and the two connecting plates are respectively fixedly connected to the outer edges of the front ends of the two inner sleeve pipes.

3. The multi-layer corrugated cardboard gluing device according to claim 2, wherein: The installation frame is a portal frame, including a cross frame and vertical frames respectively vertically arranged below both sides of the cross frame. A recovery pump is provided at the top of the cross frame. A first through hole is provided on the outer edge of each outer sleeve pipe, and first connecting pipes are respectively connected to the two first through holes. The two first connecting pipes both pass through the recovery pump and extend into the glue storage tank.

4. The multi-layer corrugated cardboard gluing device according to claim 3, characterized in that: First chutes are provided on the inner sides of the two vertical frames. A first sliding block for slidingly cooperating with the first chute is provided on one side of each outer sleeve pipe away from the inner sleeve pipe. The first sliding block is threadedly connected to the installation frame through a screw rod. The upper end of the screw rod extends out of the cross frame, and both connecting plates are telescopic sleeve plates.

5. The multi-layer corrugated cardboard gluing device according to claim 3, characterized in that: A leveling assembly for leveling the glue on the cardboard is further provided on the installation frame. The leveling assembly is arranged behind the glue application wheel. The leveling assembly includes two connecting blocks arranged on the installation frame and a leveling plate located between the two connecting blocks.

6. The multi-layer corrugated cardboard gluing device according to claim 5, characterized in that: Second chutes are respectively provided at the rear sides of the two vertical frames. Second sliding blocks for slidingly cooperating with the second chute are respectively provided on the two connecting blocks. A plurality of first connecting holes are arranged at intervals in the vertical direction on both vertical frames, and second connecting holes are provided on both second sliding blocks. The connecting blocks are fixed to the installation frame by locking members passing through the first connecting holes and the second connecting holes.

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