A gluing device for a folder-gluer

Abstract

The utility model relates to a paste in box machine gluing device, include: be equipped with water platform surface frame, be equipped with transmission unit of conveyer belt, conveyer belt is laid on the mesa of frame, be equipped with the conveying surface of paperboard in conveying direction, conveying surface is towards upwards and extends along the horizontal direction, set up in conveying direction upstream, be used for grinding at least one part of the paperboard that protrudes outside conveying surface's grinding unit, set up in conveying direction's downstream, grinding unit is located on same straight line, be used for coating glue to the position of paperboard that grinding unit grinds on the gluing unit, the paste in box machine gluing device through setting up grinding unit on the gluing unit upstream to paperboard carries out grinding treatment, has the advantages such as simple structure, good gluing effect.

Description

Technical Field

[0001] This utility model relates to the technical field of box gluing machine equipment, and in particular to a gluing device for a box gluing machine. Background Technology

[0002] A box gluing machine is a mechanical device used in packaging box production to fold and glue printed, die-cut cardboard into shape, replacing the original manual gluing method, reducing labor costs and improving work efficiency. Existing box gluing machines mainly include a feeding mechanism, a gluing mechanism, a folding mechanism, and a hot pressing mechanism. During operation, the feeding mechanism continuously transports cardboard, the gluing mechanism applies glue to the cardboard, then the cardboard enters the folding mechanism to be folded into shape, and finally the folded cardboard enters the hot pressing mechanism to press and dry the glue, ensuring stable adhesion.

[0003] However, it has been found that when using different types of cardboard to produce boxes, the gluing effect of the boxes is inconsistent, the boxes are easy to fall apart, and it is difficult to maintain their shape, which affects the product quality. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a gluing device for a box gluing machine.

[0005] A gluing device for a carton gluing machine includes: a frame; a transmission unit including a conveyor belt disposed on the frame and having a conveying surface for conveying cardboard in a conveying direction, the conveying surface facing upward and extending horizontally; a sanding unit disposed upstream in the conveying direction for sanding at least a portion of the cardboard extending beyond the conveying surface; and a gluing unit disposed downstream in the conveying direction, wherein the sanding unit and the gluing unit are located on the same straight line in the conveying direction, and the gluing unit is used to apply glue to the position of the cardboard sanded by the sanding unit.

[0006] The gluing device for a carton gluing machine described in this utility model has a grinding unit installed upstream of the gluing unit. The grinding unit grinds the surface of the cardboard that extends beyond the conveying surface. Even if the cardboard is laminated, the grinding unit can break the laminate on the surface of the cardboard, so that when gluing is applied at the gluing unit, the glue can penetrate the laminate and enter the cardboard fibers, resulting in a better gluing effect.

[0007] Furthermore, the polishing unit includes a grinding wheel and a second drive motor; projected along the conveying direction, the grinding wheel is located below the outer side of the conveying surface, and its top can contact the cardboard; the second drive motor can drive the grinding wheel to rotate; the axis of rotation of the grinding wheel is perpendicular to the conveying direction and parallel to the conveying surface.

[0008] With the above technical solution, when the cardboard is conveyed to the sanding unit along the conveyor belt, the second drive motor drives the grinding wheel to rotate, thereby destroying the coating on the surface of the cardboard.

[0009] Furthermore, the sanding unit also includes a first clamping wheel; the first clamping wheel is located above the grinding wheel and is used to clamp the paperboard when the grinding wheel sands the paperboard.

[0010] With the above technical solution, when the abrasive wheel is used to sand the cardboard, the first clamping wheel applies a clamping force to prevent the cardboard from shaking while ensuring that the abrasive wheel and the cardboard are in full contact, resulting in a better sanding effect.

[0011] Furthermore, the polishing unit includes a plasma spray gun; the plasma spray gun is disposed on one side of the conveyor belt; projected along the conveying direction of the conveyor belt, the plasma spray gun is located below the outer side of the conveying surface.

[0012] With the above technical solution, when the cardboard is conveyed to the sanding unit along the conveyor belt, the plasma spray gun sprays a plasma stream to impact and destroy the coating on the surface of the cardboard.

[0013] Furthermore, the transmission unit also includes a first transmission roller, a second transmission roller, and a first drive motor; the axes of the first transmission roller and the second transmission roller are perpendicular to the conveying direction and parallel to the conveying surface, the first transmission roller and the second transmission roller are connected by the conveyor belt, and the first drive motor can drive the second transmission roller to rotate.

[0014] Through the above technical solution, the first drive motor drives the second transmission roller to rotate, and the second transmission roller and the first transmission roller are driven by a conveyor belt, thereby forming a conveying surface for transporting along a fixed direction.

[0015] Furthermore, the gluing device of the carton gluing machine also includes a dust removal unit, which includes a ventilation pipe and an exhaust fan; the ventilation pipe is disposed between the sanding unit and the gluing unit; one end of the ventilation pipe is connected to the exhaust fan, and the other end extends to the lower part of the outer side of the conveying surface so as to be opposite to the position where the cardboard is sanded by the sanding unit.

[0016] With the above technical solution, when the cardboard passes through the dust removal unit after being sanded by the sanding unit, the exhaust fan is started and the ventilation pipe extracts the residual dust on the cardboard. This avoids affecting the gluing effect on the one hand, and avoids dust contamination of the glue stored in the gluing unit on the other hand.

[0017] Furthermore, the gluing unit includes a gluing wheel and a third drive motor. The frame has a glue storage tank for storing glue. The gluing wheel is disposed inside the glue storage tank, and at least a portion of it extends out of the glue storage tank to connect with the position of the cardboard being sanded by the sanding unit. The third drive motor can drive the gluing wheel to rotate, and the rotation axis of the gluing wheel is perpendicular to the conveying direction and parallel to the conveying surface.

[0018] With the above technical solution, when the cardboard passes through the gluing unit, the third drive motor drives the gluing wheel to rotate, and the gluing wheel picks up the glue in the glue storage tank and applies it to the surface of the cardboard after it has been sanded by the sanding unit.

[0019] Furthermore, the gluing unit also includes a second pressing roller projected along the conveying direction of the conveyor belt. The second pressing roller is located above the gluing roller and is used to press the cardboard firmly when the gluing roller applies glue.

[0020] With the above technical solution, when the coating wheel applies glue, the second pressing wheel applies a pressing force, which prevents the cardboard from shaking and ensures that the coating wheel and the cardboard are in full contact, resulting in a better glue application effect.

[0021] Furthermore, an elastic pad is fitted on the outer wall of the second clamping wheel.

[0022] The above technical solution avoids abrasion on the other side of the cardboard when the second pressure roller presses against it.

[0023] Furthermore, the transmission unit also includes a pressing seat, which is disposed above the conveying surface and extends along the conveying direction; a plurality of pressing rollers are evenly arranged at one end of the pressing seat near the conveying surface along the conveying direction of the conveyor belt, the pressing rollers are separated from the conveying surface by a certain distance, and the axis of the pressing rollers is parallel to the conveying surface and perpendicular to the conveying direction.

[0024] With the above technical solution, the cardboard is pressed down by the pressure rollers when it is conveyed by the conveyor belt, thus preventing the cardboard from shaking.

[0025] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the spatial structure of the gluing device for a box gluing machine provided in Embodiment 1 of this utility model;

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3This is a schematic diagram of the spatial structure of the grinding unit provided in Embodiment 2 of this utility model. Detailed Implementation

[0029] The applicant conducted research and analysis on existing box gluing machines and found that the inconsistent bonding effect when using different types of cardboard to produce paper boxes is due to the following: For aesthetic and comfort purposes, some cardboard surfaces are coated with special materials such as silver cardboard, gold cardboard, and laminated paper. These materials have a superior appearance compared to ordinary paper. However, during the gluing process at the gluing mechanism, the glue is easily blocked by the film on the cardboard surface and cannot penetrate into the cardboard fibers. This makes it difficult for the glue to stay in the set position on the cardboard, resulting in a poor gluing effect. Consequently, this affects the subsequent box gluing process, leading to inconsistent bonding effects in the finished paper boxes.

[0030] Based on this, the applicant provides a gluing device for a carton gluing machine. This device adds a sanding unit upstream of the gluing unit to sand the film layer on the cardboard surface at the gluing location. This allows the glue to penetrate the surface film layer and enter the paper fibers during gluing, forming a reliable bond with the paper layer and achieving a better gluing effect. This ensures that the produced cartons have excellent adhesion. The following is one embodiment of this utility model:

[0031] Example 1

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the spatial structure of the gluing device for a box gluing machine provided by this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0033] This utility model provides a gluing device for a carton gluing machine, including a frame 1, a transmission unit 2, a sanding unit 3, a dust removal unit 4, and a gluing unit 5. The frame 1 has a horizontal table, and the transmission unit 2 is disposed on the table of the frame 1, transporting cardboard in a straight line. The sanding unit 3, the dust removal unit 4, and the gluing unit 5 are mounted on the frame 1 and arranged sequentially along the transport direction of the transmission unit 2. The sanding unit 3 is located upstream of the transmission unit 2, the gluing unit 5 is located downstream of the transmission unit 2, and the dust removal unit 4 is located between the sanding unit 3 and the gluing unit 5.

[0034] The transmission unit 2 includes a first transmission roller 21, a second transmission roller 22, a conveyor belt 23, and a first drive motor 24. The axes of the first transmission roller 21 and the second transmission roller 22 are parallel to each other on the platform of the frame 1. The first transmission roller 21 and the second transmission roller 22 are connected by the conveyor belt 23, forming an upward-facing conveying surface (not shown) on the conveyor belt 23 parallel to the platform of the frame 1. The output shaft of the first drive motor 24 is connected to the second transmission roller 22, driving the second transmission roller 22 to rotate. The second transmission roller 22 is driven by the conveyor belt 23 and is connected to the first transmission roller 21. The conveyor belt 23 moves directionally between the first transmission roller 21 and the second transmission roller 22. The cardboard is located on the conveying surface, thereby realizing the directional transport of the cardboard. In this embodiment, the direction of cardboard transport is from the first transmission roller 21 horizontally towards the second transmission roller 22. When the cardboard is transported on the conveyor belt 23, part of it is inside the conveying surface and the other part extends out of the conveying surface. The sanding unit 3 sands the part of the cardboard that extends out of the conveying surface.

[0035] Furthermore, the transmission unit 2 also includes a pressing seat 25, which is disposed above the conveying surface and separated from it by a certain distance. The extending direction of the pressing seat 25 is parallel to the conveying direction of the conveyor belt 23. A plurality of pressing rollers 251 are mounted on the pressing seat 25 and are evenly distributed along the conveying direction of the conveyor belt 23. The axis of each pressing roller 251 is parallel to the axis of the first transmission roller 21. There is a gap between the bottom surface of the pressing roller 251 and the conveying surface. When the cardboard is transported on the conveying surface, one side of its surface contacts the conveying surface, and the other side contacts the bottom surface of the pressing roller 251. The pressing roller 251 is used to press the cardboard, preventing it from shifting during transport.

[0036] Furthermore, there are two or more sets of clamping seats 25, each extending parallel to the conveying direction and arranged at a certain distance along the axial direction of the first drive roller 21. Multiple sets of clamping seats 25 provide multiple limits for the transported cardboard, further preventing deviation during transport.

[0037] The polishing unit 3 is located upstream of the conveyor belt 23 and includes a grinding wheel 31, a second drive motor 32, and a first pressure roller 33. Specifically, a receiving groove 11 is provided on the table surface of the frame 1 near the upstream of the conveyor belt 23. The grinding wheel 31 is disposed in the receiving groove 11, with at least a portion extending out of the receiving groove 11. The highest point of the grinding wheel 31 extending out of the receiving groove 11 is on the same horizontal plane as the conveying surface, allowing at least a portion of the grinding wheel 31 to contact the cardboard. The output shaft of the second drive motor 32 is connected to the grinding wheel 31, and the axial direction of the output shaft of the second drive motor 32 is parallel to the axial direction of the first drive roller 21, enabling the grinding wheel 31 to rotate around its axis. Preferably, the rotation direction of the grinding wheel 31 is opposite to that of the first drive roller 21, resulting in better polishing effect. Projected along the conveying direction of the conveyor belt 23, the first pressure roller 33 is disposed above the grinding wheel 31 and is used to press the cardboard when the grinding wheel 31 polishes it. Preferably, the first pressure roller 33 is rotatable about an axis, and the axis of rotation of the first pressure roller 33 is parallel to the axis of the output shaft of the second drive motor 32. The direction of rotation of the first pressure roller 33 is opposite to that of the first drive roller 21, so as to press the cardboard against the grinding wheel 31 and simultaneously push the cardboard to be transported along the conveying direction. There is a certain gap between the first pressure roller 33 and the grinding wheel 31. Preferably, the gap between the first pressure roller 33 and the grinding wheel 31 is the same height as the gap between the pressure roller 251 and the conveying surface. When the cardboard is transported on the conveyor belt 23 and passes the grinding unit 3, one side plane of the cardboard above the receiving groove 11 contacts the first pressure roller 33, and the other side plane contacts the grinding wheel 31. The first pressure roller 33 presses the cardboard against the grinding wheel 31 to ensure that the grinding wheel 31 contacts the cardboard and performs grinding.

[0038] Furthermore, the outer wall of the grinding wheel 31 is provided with a plurality of protrusions 311, which are evenly distributed on the outer wall of the grinding wheel 31. When the grinding wheel 31 grinds the cardboard, the protrusions 311 can enhance the destructive force of the grinding wheel 31 on the cardboard, thereby improving the grinding efficiency.

[0039] The dust removal unit 4 is located between the sanding unit 3 and the gluing unit 5, and includes a ventilation pipe 41 and an exhaust fan 42. The ventilation pipe 41 is located on the side of the frame 1 near the gluing unit 5, with one end connected to the exhaust fan 42 and the other end extending perpendicular to the conveying surface. The opening of the ventilation pipe 41 near the conveying surface is slightly lower than the height of the conveying surface. When the cardboard passes through the dust removal unit 4, the exhaust fan 42 is activated. The dust remaining on the cardboard after the portion of the cardboard extending beyond the conveying surface is sanded by the grinding wheel 31 is sucked away by the ventilation pipe 41. This prevents poor contact between the glue and the cardboard during subsequent gluing and also prevents the residual dust on the cardboard from contaminating the glue stored in the gluing unit 5.

[0040] The gluing unit 5 is located downstream of the conveyor belt 23 and on the same side of the frame 1 as the sanding unit 3. The gluing unit 5 includes a gluing roller 51, a third drive motor 52, and a second pressure roller 53. Specifically, a glue storage tank 12 for storing glue is provided on the platform near the downstream of the conveyor belt 23 on the frame 1. The gluing roller 51 is disposed within the glue storage tank 12, with at least a portion extending beyond it. Preferably, the highest point of the gluing roller 51 extending beyond the glue storage tank 12 is on the same horizontal plane as the conveying surface. The output shaft of the third drive motor 52 is connected to the gluing roller 51, and the axial direction of the output shaft of the third drive motor 52 is parallel to the axial direction of the first transmission roller 21, enabling the gluing roller 51 to rotate around its axis. Projected along the conveying direction of the conveyor belt 23, the second pressure roller 53 is disposed above the gluing roller 51 and is used to press the cardboard when the gluing roller 51 applies glue to it. Preferably, the second pressure roller 53 is rotatable about an axis, the axis of rotation of the second pressure roller 53 being parallel to the axis of the output shaft of the third drive motor 52. The direction of rotation of the second pressure roller 53 is opposite to that of the first drive roller 21, so as to press the cardboard against the glue coating roller 51 and simultaneously push the cardboard to transport it along the conveying direction. There is a certain gap between the second pressure roller 53 and the glue coating roller 51 to allow the cardboard to pass through. Preferably, the gap between the second pressure roller 53 and the glue coating roller 51 is the same height as the gap between the pressure roller 251 and the conveying surface. When the cardboard is transported on the conveyor belt 23 and passes the gluing unit 5, one side of the portion of the cardboard extending beyond the conveying surface contacts the second pressing wheel 53, and the other side contacts the gluing wheel 51. The third drive motor 52 drives the gluing wheel 51 to rotate. The gluing wheel 51 picks up glue from the glue storage tank 12 and applies the glue to the cardboard after it has been sanded by the grinding wheel 31, so that the glue can better penetrate and adhere to the cardboard, which is convenient for subsequent processing.

[0041] Furthermore, elastic pads 60 are provided on the outer walls of the first pressing roller 33 and the second pressing roller 53 to prevent the side of the cardboard that contacts the first pressing roller 33 and / or the second pressing roller 53 from being worn by the first pressing roller 33 and / or the second pressing roller 53 when the cardboard is pressed by the first pressing roller 33 and / or the second pressing roller 53.

[0042] Preferably, the elastic pad 60 is a wear-resistant rubber part, which gives it a longer service life.

[0043] The working principle of the gluing device for the box gluing machine provided in this embodiment is as follows: During operation, the cardboard is placed on the conveyor belt 23 for conveying. Part of the cardboard is located inside the conveying surface, and part of the cardboard extends outside the conveying surface. The part of the cardboard located inside the conveying surface is pressed by the pressure roller 251 during transportation to prevent the cardboard from shaking. When the cardboard passes the grinding unit 3, the second drive motor 32 is turned on, driving the grinding wheel 31 to rotate at high speed to grind the side of the cardboard that contacts the grinding wheel 31, thereby damaging the coating on the cardboard. Then the cardboard continues to be transported forward. When the cardboard passes the gluing unit 5, the third drive motor 52 is turned on, driving the glue coating wheel 51 to rotate. The glue coating wheel 51 picks up the glue in the glue storage tank 12 and applies the glue to the side of the cardboard that has been ground by the grinding wheel 31, so that the glue coating effect is better.

[0044] Example 2

[0045] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the spatial structure of the grinding unit provided in Embodiment 2 of this utility model.

[0046] The overall structure of the gluing device for the carton gluing machine provided in this embodiment is basically the same as that in Embodiment 1, the difference being:

[0047] The polishing unit 3 includes a plasma spray gun 34 and a control console 35. The plasma spray gun 34 is disposed on one side of the conveyor belt 23, projected along the conveying direction of the conveyor belt 23, and is located below the conveying surface. The extension direction of the plasma spray gun 34 is perpendicular to the plane containing the conveying surface, that is, the nozzle of the plasma spray gun 34 points towards the conveying surface. The control console 35 is electrically connected to the plasma spray gun 34, supplying power to the plasma spray gun 34 and controlling its operation.

[0048] The working principle of the gluing device for the box gluing machine provided in this embodiment is as follows: During operation, the cardboard is placed on the conveyor belt 23 for conveying. Part of the cardboard is located inside the conveying surface, and part of the cardboard extends outside the conveying surface. When the cardboard passes the sanding unit 3, the control console 35 controls the plasma spray gun 34 to start working. The plasma spray gun 34 generates plasma to impact the side of the cardboard that extends outside the conveying surface and is close to the plasma spray gun 34, making it rough enough for the glue to adhere to it. Then the cardboard continues to be transported forward. When the cardboard passes the gluing unit 5, the third drive motor 52 is turned on, driving the glue coating wheel 51 to rotate. The glue coating wheel 51 picks up the glue in the glue storage tank 12 and applies the glue to the side of the cardboard that has been impacted by the plasma spray gun 34, so that the glue coating effect is better.

[0049] In addition, when the gluing device of the same box gluing machine is equipped with multiple polishing units, the polishing unit of Embodiment 1 can be set as needed, or the polishing unit of Embodiment 2 can be set, or both can be set at different positions at the same time.

[0050] Compared with the prior art, the gluing device for a box-gluing machine provided by this utility model has the following advantages:

[0051] (1) The gluing unit 5 is located downstream of the conveyor belt 23, and the sanding unit 3 is located upstream of the conveyor belt 23. The sanding unit 3 breaks the film on the cardboard, making the cardboard surface rougher, so that the glue is easier to apply to the cardboard surface when gluing.

[0052] (2) A pressure roller 251 is provided above the conveyor belt 23 to fix the position of the cardboard during transport and prevent the cardboard from shaking and affecting the subsequent sanding and gluing processes.

[0053] (3) The outer walls of the first pressing roller 33 and the second pressing roller 53 are fitted with elastic pads 60, which can prevent the surface of the paperboard from being worn when pressing the paperboard.

[0054] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A gluing device for a box-gluing machine, characterized in that, include: frame; The transmission unit includes a conveyor belt disposed on the frame and having a conveying surface for conveying cardboard in a conveying direction, the conveying surface being upward and extending in a horizontal direction; A sanding unit is located upstream in the conveying direction and is used to sand at least a portion of the cardboard that extends beyond the conveying surface; The gluing unit is located downstream of the conveying direction, and the sanding unit and the gluing unit are located on the same straight line in the conveying direction. The gluing unit is used to apply glue to the position of the cardboard that is sanded by the sanding unit.

2. The gluing device for a box-gluing machine according to claim 1, characterized in that: The polishing unit includes a grinding wheel and a second drive motor; projected along the conveying direction, the grinding wheel is located below the outer side of the conveying surface, and its top can contact the cardboard; the second drive motor can drive the grinding wheel to rotate. The shaft of the grinding wheel is perpendicular to the conveying direction and parallel to the conveying surface.

3. The gluing device for a box-gluing machine according to claim 2, characterized in that: The sanding unit further includes a first pressing wheel; the first pressing wheel is located above the sanding wheel and is used to press the paperboard against the sanding wheel when the sanding wheel sands the paperboard.

4. The gluing device for a box-gluing machine according to claim 2, characterized in that: The polishing unit includes a plasma spray gun; the plasma spray gun is disposed on one side of the conveyor belt; projected along the conveying direction of the conveyor belt, the plasma spray gun is located below the outer side of the conveying surface.

5. The gluing device for a box-gluing machine according to any one of claims 2-4, characterized in that: The transmission unit further includes a first transmission roller, a second transmission roller, and a first drive motor; The axes of the first drive roller and the second drive roller are perpendicular to the conveying direction and parallel to the conveying surface. The first drive roller and the second drive roller are connected by the conveyor belt. The first drive motor can drive the second drive roller to rotate.

6. The gluing device for a box-gluing machine according to any one of claims 2-4, characterized in that: It also includes a dust removal unit, which includes a ventilation duct and an exhaust fan; the ventilation duct is disposed between the sanding unit and the gluing unit; one end of the ventilation duct is connected to the exhaust fan, and the other end extends to the lower part of the outer side of the conveying surface so as to be opposite to the position of the cardboard being sanded by the sanding unit.

7. The gluing device for a box-gluing machine according to any one of claims 2-4, characterized in that: The gluing unit includes a gluing wheel and a third drive motor, and the frame is provided with a glue storage tank for storing glue. The coating roller is disposed inside the glue storage tank, and at least a portion of it extends out of the glue storage tank to connect with the position of the cardboard being sanded by the sanding unit; the third drive motor can drive the coating roller to rotate, and the rotation axis of the coating roller is perpendicular to the conveying direction and parallel to the conveying surface.

8. The gluing device for a box-gluing machine according to claim 7, characterized in that: The gluing unit also includes a second pressing roller, projected along the conveying direction of the conveyor belt. The second pressing roller is located above the gluing roller and is used to press the cardboard against the grinding wheel when the gluing roller applies glue.

9. The gluing device for a box-gluing machine according to claim 8, characterized in that: An elastic pad is fitted on the outer wall of the second clamping wheel.

10. The gluing device for a box-gluing machine according to claim 1, characterized in that: The transmission unit further includes a pressing seat, which is disposed above the conveying surface and extends along the conveying direction; a plurality of pressing rollers are evenly arranged at one end of the pressing seat near the conveying surface along the conveying direction of the conveyor belt, the pressing rollers are separated from the conveying surface by a certain distance, and the axis of the pressing rollers is parallel to the conveying surface and perpendicular to the conveying direction.

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