Gluing mechanism of paperboard laminating machine

Abstract

The utility model relates to the field of paper mounting machines, and discloses a gluing mechanism of a paperboard mounting machine, which comprises a glue containing cavity, a gluing roller and an auxiliary rubber roller, the gluing roller and the auxiliary rubber roller are connected with a power source for driving the gluing roller and the auxiliary rubber roller to rotate reversely, and gluing areas are arranged on the outer surfaces of the gluing roller and the auxiliary rubber roller. A glue channel is formed between the gluing roller and the gluing area of the auxiliary glue roller, the glue containing cavity is located above the glue channel and communicated with the bottom of the glue containing cavity and the glue channel, glue in the glue containing cavity is at least in contact with the gluing roller, and glue in the glue channel is in contact with the gluing roller and the auxiliary glue roller; the gluing device further comprises a glue filtering device and a glue collecting device, the glue collecting device is located below the glue channel, the space in the glue collecting device is communicated with the glue filtering device, the glue filtering device comprises a glue outlet, the glue outlet is opposite to the glue containing cavity, and glue of the glue collecting device flows out to enter the glue containing cavity to glue the gluing roller after being filtered through the glue filtering device. Glue output by the glue filtering device is supplemented to the glue containing cavity through the glue outlet, the glue splashing problem caused by centrifugal force is reduced, and the cleanliness of the production environment is improved.

Description

Technical Field

[0001] The utility model relates to the field of paper laminating machines, in particular to a gluing mechanism of a cardboard laminating machine. Background Art

[0002] As a printing and packaging machine, the gluing device of the cardboard laminating machine includes a glue roller, a transition roller, and a laminating glue roller. The existing technology uses a glue tank at the bottom of the glue roller. The lower part of the glue roller is immersed in the glue tank and rotates to carry the glue upward. Finally, after passing through several transition rollers, it reaches the laminating glue roller to glue the cardboard. However, this method has the following disadvantages: 1. The slow conveying speed leads to a slow overall gluing process and low cardboard laminating efficiency. Because the overall gluing speed is controlled by the glue roller, its speed determines the speed of cardboard gluing. However, if the speed of the glue roller is too fast, the contact of the glue in the glue tank will cause large splashes due to centrifugal force, thereby affecting the environment of the production area. 2. After the glue reaches the surface of the cardboard, it will flow down and continue to be collected through the glue tank. However, the glue will carry paper scraps from the cardboard surface down into the glue tank. In addition, after a series of gluing processes, the glue will also come into contact with dust or other substances in the environment when it returns to the glue tank for collection. Repeated use will result in more impurities in the glue, affecting the quality of the glue and thus the final cardboard laminating effect. 3. The glue temperature is difficult to control. Heating the glue in the glue tank requires a lot of heat energy, and it will gradually cool down after being transferred by the glue roller. Operators usually calculate the temperature of the glue heated in the glue tank by guesswork. If the glue temperature is not appropriate during the final cardboard laminating, the laminating quality will be affected. For example, if the glue temperature is too high, the glue will be too strong and the surface will wrinkle. If the glue temperature is too low, the glue will harden and the bonding effect will be poor. In order to solve the above three problems, it is necessary to provide a gluing mechanism for a cardboard laminating machine. Summary of the Invention

[0003] The utility model aims at the shortcomings of the prior art and provides a gluing mechanism for a cardboard laminating machine.

[0004] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] A gluing mechanism of a cardboard laminating machine includes a glue holding chamber, a glue roller and an auxiliary glue roller. The glue roller and the auxiliary glue roller are connected to a power source that drives them to rotate in opposite directions. The outer surfaces of the glue roller and the auxiliary glue roller are provided with glue passing areas. A glue channel is formed between the glue passing areas of the glue roller and the auxiliary glue roller. The glue holding chamber is located above the glue channel and is connected to the glue channel at the bottom of the glue holding chamber. The glue in the glue holding chamber is in contact with at least the glue roller, and the glue in the glue channel is in contact with the glue roller and the auxiliary glue roller. The machine also includes a glue filtering device and a glue collecting device. The glue collecting device is located below the glue channel. The space in the glue collecting device is connected to the glue filtering device. The glue filtering device includes a glue outlet, which is opposite to the glue holding chamber. The glue in the glue collecting device is filtered by the glue filtering device and then flows out into the glue holding chamber to apply glue to the glue roller. The glue output from the filter is replenished into the glue holding chamber through the glue outlet, ensuring that the glue in the chamber is clean and dust-free. The glue in the chamber can then be directly applied to the glue roller. This prevents the entire glue roller from being immersed in glue, reduces glue splashing caused by centrifugal force, and improves the cleanliness of the production environment. Thanks to the improved design of the glue roller and the glue holding chamber, even at increased conveying speeds, glue splashing will not occur, thereby improving production efficiency without affecting the production environment.

[0006] Preferably, the upper glue roller rotates at the same linear speed as the auxiliary glue roller, but in opposite directions. Generally, on one side of the glue tank, the upper glue roller or the auxiliary glue roller rotates from top to bottom, driving the glue through and evenly spreading it on the surface of the upper glue roller.

[0007] Preferably, a gear 1 is provided on the side of the upper rubber roller, and a gear 2 is provided on the side of the auxiliary rubber roller, and the gear 1 is meshed with the gear 2.

[0008] Preferably, the left and right walls of the glue chamber serve as the outer surfaces of the upper and auxiliary glue rollers, respectively. The chamber also features front and rear barriers to limit the flow of glue. The glue in the chamber contacts the upper and auxiliary glue rollers. This design limits the flow of glue while allowing for effective contact between the upper and auxiliary glue rollers, improving gluing efficiency.

[0009] Preferably, the glue filtering device includes a box and a pipeline for storing glue, the box is connected to the pipeline, a filtering component for filtering the glue is provided in the box, and the glue outlet is located at the output end of the pipeline.

[0010] Preferably, the box is also connected to a power pump for providing power for outputting the glue through the pipeline.

[0011] Preferably, a transition rubber roller and a laminating rubber roller in contact with the paperboard are further included, and the upper rubber roller, the transition rubber roller, and the laminating rubber roller are sequentially connected. The orderly connection of the transition rubber roller and the laminating rubber roller allows the glue on the upper rubber roller to be further thinned by the transition rubber roller, resulting in a more uniform glue on the transition rubber roller. When the laminating rubber roller is gluing the paper, the glue is applied more evenly and thinly, which facilitates the drying of the glue and improves the bonding effect during laminating.

[0012] Preferably, the device further comprises a laminating rubber roller in contact with the cardboard, and the upper rubber roller is parallel to the laminating rubber roller and connected to each other.

[0013] As a preference, a transition rubber roller is also included, and the upper rubber roller, the transition rubber roller and the laminating rubber roller are connected in sequence.

[0014] Preferably, at least one of the glue rollers is equipped with a heating device for heating the glue on its surface. This device allows for precise temperature control of the glue, ensuring optimal adhesion during the transfer process. The heating assists the sensor in temperature control, ensuring more stable glue temperature control. This solves the problem in the prior art where the glue cooling temperature after one or more transfers is difficult to calculate, resulting in excessively low or high glue temperatures during lamination with the cardboard.

[0015] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0016] By optimizing the configuration of the gluing roller and the auxiliary gluing roller, the uniformity and efficiency of gluing are improved. At the same time, the use of the glue filtering and collecting devices ensures the cleanliness and recycling of the glue, reduces the mixing of impurities, and improves the overall effect of cardboard lamination. The introduction of the heating device makes the temperature control of the glue more precise, avoiding lamination quality problems caused by improper temperature. In addition, due to the design improvements of the gluing roller and the glue holding chamber, even if the conveying speed is increased, it will not cause glue splashing, thereby improving production efficiency without affecting the production environment. Overall, the gluing mechanism design of the utility model improves production efficiency, improves the working environment, and ensures the quality of the final product after lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present utility model.

[0018] Figure 2 It is a partial structural diagram of the gluing mechanism of the utility model.

[0019] Figure 3 It is a front view and AA cross-sectional view of the gluing mechanism of the utility model.

[0020] Figure 4 yes Figure 3 A partial enlarged view of B.

[0021] Figure 5 It is a structural diagram of the other side of the utility model.

[0022] The parts indicated by the numerical symbols in the above drawings are as follows: 1. Glue holding chamber; 2. Upper glue roller; 21. Gear 1; 3. Auxiliary glue roller; 31. Gear 2; 4. Glue channel; 5. Glue collecting device; 61. Glue outlet; 62. Box; 63. Pipeline; 64. Power pump; 71. Transition rubber roller; 72. Laminating rubber roller. DETAILED DESCRIPTION

[0023] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] A gluing mechanism for a cardboard laminating machine, such as Figure 1-5 As shown, it includes a glue holding chamber 1, a glue roller 2 and an auxiliary glue roller 3. The glue roller 2 and the auxiliary glue roller 3 are connected to a power source that drives them to rotate in opposite directions. The outer surfaces of the glue roller 2 and the auxiliary glue roller 3 have glue passing areas. A glue channel 4 is formed between the glue passing areas of the glue roller 2 and the auxiliary glue roller 3. The glue holding chamber 1 is located above the glue channel 4 and is connected to the bottom of the glue holding chamber 1 and the glue channel. The glue in the glue holding chamber 1 is in contact with at least the glue roller 2, and the glue in the glue channel is in contact with the glue roller 2 and the auxiliary glue roller 3; it also includes a glue filtering device and a glue collecting device 5. The glue collecting device 5 is located below the glue channel 4. The space in the glue collecting device 5 is connected to the glue filtering device. The glue filtering device includes a glue outlet 61. The glue outlet 61 is opposite to the glue holding chamber 1. The glue of the glue collecting device 5 is filtered by the glue filtering device and then flows out into the glue holding chamber 1 to apply glue to the glue roller 2.

[0026] When the upper rubber roller 2 rotates, the linear speed of its surface is the same as the linear speed of the auxiliary rubber roller 3 when it rotates, but the rotation directions are opposite.

[0027] A gear 1 21 is provided on the side of the upper rubber roller 2 , and a gear 2 31 is provided on the side of the auxiliary rubber roller 3 . The gear 1 21 is meshed with the gear 2 31 .

[0028] The left and right side walls of the glue chamber 1 are the outer surfaces of the upper glue roller 2 and the auxiliary glue roller 3 respectively. The glue chamber 1 also has front and rear retaining walls to limit the outflow of glue. The glue in the glue chamber 1 is in contact with the upper glue roller 2 and the auxiliary glue roller 3.

[0029] The glue filtering device includes a box 62 for storing glue and a pipe 63 . The box 62 is connected to the pipe 63 . A filtering component for filtering the glue is provided in the box 62 . The glue outlet 61 is located at the output end of the pipe 63 .

[0030] The box is also connected to a power pump for providing power for outputting the glue through the pipeline.

[0031] Working principle: When the cardboard laminating machine is working normally, the power source drives the upper glue roller to move. An inverted triangle-shaped glue cavity 1 is formed between the angles on the arc surfaces of the upper glue roller and the auxiliary glue roller. The outer surfaces of the upper glue roller and the auxiliary glue roller serve as the left and right groove walls of the glue cavity 1. Front and rear baffles are provided at the front and rear to prevent glue overflow, so that the glue cavity 1 is closed on the side, but the bottom can still pass through the glue channel 4 between the upper glue roller and the auxiliary glue roller. The glue channel 4 can be a structure in which the upper glue roller and the auxiliary glue roller are relatively provided with respective glue passing areas on the left and right sides, and the glue passing areas on the left and right sides have a gap of a certain width, or it can be a gap between the glue passing areas of the upper glue roller 2 and the glue passing areas of the auxiliary glue roller 3 that are in contact with each other. Through the relative rotation of the upper glue roller 2 and the auxiliary glue roller 3, the glue on the upper glue roller 2, or the upper glue rollers 2 and 3 can be simultaneously passed through. The glue on the upper surface of the auxiliary rubber roller 3 flows downward through this gap, thus forming the glue channel 4. The glue transfer area is not a fixed location for the upper and auxiliary rubber rollers 2 and 3. With each rotation, the relative locations of the upper and auxiliary rubber rollers 2 and 3 change. The glue on the upper rubber roller 2 is heated by its own heating device, ensuring optimal adhesion during cardboard lamination, controlled at a temperature appropriate for the situation. The auxiliary rubber roller 3 can also be equipped with a heating device to assist in temperature control, allowing for real-time heating of the glue passing through the glue channel 4. Heating can be achieved by incorporating heating rods, heating wires, or other heating elements readily apparent to those skilled in the art, without limitation here.

[0032] In the glue holding chamber 1, the glue is filtered and output through a glue filtering device. The filtering component can be a simple physical filter, or it can use chemical or electrochemical filtration to assist dust precipitation. Then it is filtered through a filter component with filter holes. The filtered glue is output to the glue holding chamber 1 through a pipeline, and then after passing through each rubber roller, the glue dripping from each rubber roller is collected by a glue collecting device 5. The glue collecting device can include any one or both of a funnel and a water tank for collecting glue. Its output end is connected to the glue filtering device for reuse, and there is no concern about the newly applied glue having a lot of impurities.

[0033] Since the contact area between the glue in the glue holding chamber 1 and the glue roller 2 is less than a quarter of the glue roller 2 and is located on the left or right side of the glue roller 2, instead of the glue roller 2 being immersed in the glue tank, the overall conveying speed can be appropriately increased without throwing the glue in the glue holding chamber 1 out of the machine body, affecting the overall production environment or other processing mechanisms.

[0034] Example 2

[0035] A gluing mechanism for a cardboard laminating machine, similar to Example 1, differs in that it further includes a laminating glue roller that contacts the cardboard. Preferably, one or more transition glue rollers are provided. If transition glue rollers are provided, the upper glue roller 2, the transition glue roller 71, and the laminating glue roller 72 are sequentially connected. If transition glue rollers are not provided, the upper glue roller is connected to the laminating glue roller. At least one of the upper glue roller 2, the auxiliary glue roller 3, the transition glue roller 71, and the laminating glue roller 72 is provided with a heating device for controlling the temperature and heating the glue.

[0036] The operating principle is the same as in Example 1, except that the glue on the top glue roller 2 is heated by a heating device installed on at least one of the top glue roller 2, the auxiliary glue roller 3, the transition glue roller 71, and the mounting glue roller 72. The power units are all in operation, driving the top glue roller 2, the auxiliary glue roller 3, the transition glue roller 71, and the mounting glue roller 72 to rotate at the same linear speed. The number of transition glue rollers 71 can be one or more, and is not limited here. Under the heat of the built-in heating device, the optimal adhesion state is achieved when the top glue roller 2 rotates and the glue is transferred through the transition glue roller 71 and the mounting glue roller 72. The glue can be heated in real time and controlled to a temperature suitable for the current situation. During the final mounting process, the glue temperature will not be too cold or too hot, thereby improving the mounting effect.

[0037] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0038] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of coverage of the present patent.

Claims

1. A gluing mechanism for a cardboard laminating machine, comprising a glue chamber (1), a gluing roller (2) and an auxiliary gluing roller (3), characterized in that: The upper glue roller (2) and the auxiliary glue roller (3) are connected to a power source for driving the two to rotate in opposite directions. The outer surfaces of the upper glue roller (2) and the auxiliary glue roller (3) have glue passing areas. A glue channel (4) is formed between the glue passing areas of the upper glue roller (2) and the auxiliary glue roller (3). The glue holding cavity (1) is located above the glue channel (4) and is connected to the glue channel at the bottom of the glue holding cavity (1). The glue in the glue holding cavity (1) is in contact with at least the upper glue roller (2), and the glue in the glue channel is in contact with the upper glue roller (2) and the auxiliary glue roller (3). The invention also includes a glue filtering device and a glue collecting device (5), wherein the glue collecting device (5) is located below the glue channel (4), and the space inside the glue collecting device (5) is communicated with the glue filtering device. The glue filtering device includes a glue outlet (61), and the glue outlet (61) is opposite to the glue containing chamber (1). The glue of the glue collecting device (5) is filtered by the glue filtering device and then flows out into the glue containing chamber (1) to be glued to the glue roller (2).

2. The gluing mechanism of a cardboard laminating machine according to claim 1, characterized in that: When the upper rubber roller (2) rotates, the linear speed of its surface is the same as the linear speed of the auxiliary rubber roller (3) when it rotates, and the rotation directions are opposite.

3. The gluing mechanism of a cardboard laminating machine according to claim 1, characterized in that: A gear 1 (21) is provided on the side of the upper rubber roller (2), and a gear 2 (31) is provided on the side of the auxiliary rubber roller (3), and the gear 1 (21) and the gear 2 (31) are meshed with each other.

4. The gluing mechanism of a cardboard laminating machine according to claim 1, characterized in that: The left and right side walls of the glue holding cavity (1) are the outer surfaces of the upper glue roller (2) and the auxiliary glue roller (3), respectively. The glue holding cavity (1) also has front and rear retaining walls for limiting the outflow of glue. The glue in the glue holding cavity (1) contacts the upper glue roller (2) and the auxiliary glue roller (3).

5. The gluing mechanism of a cardboard laminating machine according to claim 1, characterized in that: The glue filtering device comprises a box (62) for storing glue and a pipe (63), wherein the box (62) is connected to the pipe (63), a filtering component for filtering the glue is provided in the box (62), and a glue outlet (61) is located at the output end of the pipe (63).

6. The gluing mechanism of the cardboard laminating machine according to claim 4, characterized in that: The box (62) is also connected to a power pump (64) for providing power for the glue to be output through the pipeline (63).

7. The gluing mechanism of a cardboard laminating machine according to claim 1, characterized in that: It also includes a mounting rubber roller (72) that contacts the cardboard, and the upper rubber roller (2) and the mounting rubber roller (72) are parallel and connected to each other.

8. The gluing mechanism of the cardboard laminating machine according to claim 7, characterized in that: It also includes a transition rubber roller (71), and the upper rubber roller (2), the transition rubber roller (71), and the mounting rubber roller (72) are connected in sequence.

9. A gluing mechanism for a cardboard laminating machine according to claim 1, 7 or 8, characterized in that: At least one of all the rubber rollers is provided with a heating device for heating the glue on its surface.

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