A gluing device for corrugated board production

Abstract

The present disclosure relates to the technical field of corrugated board production related equipment, and an embodiment of the present disclosure provides a gluing device for corrugated board production, which comprises an equipment frame and a glue tank, the glue tank is fixed outside the equipment frame, a gluing assembly is arranged in the equipment frame, rectangular openings are arranged on both sides of the equipment frame, a conveying assembly is arranged on the equipment frame, the gluing assembly comprises an auger pipeline, the auger pipeline is transversely fixed in the equipment frame, the lower end of the glue tank is communicated with the auger pipeline, a plurality of discharge pipes are arranged at the bottom of the auger pipeline, a dispersing frame is arranged at the lower end of the discharge pipe, a plurality of glue discharge holes are arranged on the bottom surface of the dispersing frame, and a glue scraping strip is arranged at the bottom of the dispersing frame. Through the above technical scheme, the technical problem that the uneven thickness of each part caused by the wear of the surface of the gluing roller in the prior art, combined with the speed fluctuation and position deviation of the corrugated board in the conveying process, can easily cause uneven gluing and the situation of excessive or insufficient glue in the local part is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of equipment related to corrugated cardboard production, and more specifically, to a gluing apparatus for corrugated cardboard production. Background Technology

[0002] In today's rapidly developing packaging industry, corrugated cardboard has become a widely used packaging material due to its lightweight, high strength, and low cost. The gluing process, as a crucial step in corrugated cardboard production, directly affects the bonding quality and performance of the product; however, existing gluing equipment has significant shortcomings.

[0003] Currently, most corrugated cardboard production gluing equipment uses roller coating or doctor blade coating methods. In roller coating, wear on the coating roller surface leads to inconsistent glue thickness across different areas. Furthermore, fluctuations in speed and positional shifts during corrugated cardboard transport easily result in uneven coating, with some areas receiving too much or too little glue. While doctor blade coating can control the glue amount to some extent, the precise contact between the doctor blade and the corrugated cardboard surface is difficult to control. Uneven cardboard surfaces can easily lead to glue leakage, wasting glue, polluting equipment and the production environment, and increasing cleaning and maintenance costs. In addition, existing gluing equipment lacks effective real-time glue adjustment and monitoring mechanisms, making it impossible to adjust coating parameters promptly based on changes in cardboard material and thickness, thus failing to meet the demands of high-quality corrugated cardboard production.

[0004] As market demands for the quality of corrugated cardboard packaging continue to rise, the shortcomings of existing gluing equipment in terms of gluing uniformity and leak prevention have become bottlenecks restricting enterprises' production efficiency and product quality improvement. There is an urgent need to design a new type of gluing equipment to solve these problems. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a gluing device for corrugated cardboard production, which solves the technical problem that wear on the surface of the gluing roller will lead to inconsistent glue thickness in different parts, and the corrugated cardboard may experience speed fluctuations and position shifts during the conveying process, which can easily cause uneven glue application and result in local excessive or insufficient glue.

[0006] According to one aspect, at least one embodiment of this disclosure provides a gluing apparatus for corrugated cardboard production, comprising:

[0007] The equipment rack and the glue container, wherein the glue container is fixed to the outside of the equipment rack;

[0008] An adhesive application assembly, wherein the adhesive application assembly is disposed in the equipment rack;

[0009] A pair of rectangular openings and a conveying assembly, wherein the rectangular openings are formed on both sides of the equipment frame and the conveying assembly is mounted on the equipment frame;

[0010] The adhesive application assembly includes an auger pipe, which is horizontally fixed inside the equipment frame. The lower end of the adhesive tank is connected to the auger pipe. Several discharge pipes are provided at the bottom of the auger pipe. A dispersing frame is provided at the lower end of the discharge pipes. Several adhesive outlet holes are opened on the bottom surface of the dispersing frame. A scraper strip is provided at the bottom of the dispersing frame.

[0011] As a further technical solution, a solenoid valve is provided on the discharge pipe, a stirring rack is provided at the top of the glue tank, the stirring rack is driven to rotate by electricity, a connecting frame is provided at the top of the glue tank, and several heating tubes are provided on the connecting frame.

[0012] As a further technical solution, the conveying assembly includes a pair of rectangular plates, both of which are disposed in the rectangular opening. The rectangular plates are connected by a vertical linear drive, and several support rollers are rotatably connected between the rectangular plates.

[0013] As a further technical solution, a pair of conveying rollers are rotatably connected inside the equipment frame. One end of each conveying roller is provided with a drive wheel, and the drive wheels are connected by a belt drive. One of the conveying rollers is controlled to rotate by a motor, and a support plate is provided between the rectangular plates.

[0014] As a further technical solution, both the dispersing frame and the scraper strip are V-shaped structures.

[0015] As a further technical solution, the lower end of the conveying roller and the lower end of the scraper strip are located at the same plane height.

[0016] As a further technical solution, the scraper strip is inserted and connected to the bottom of the dispersing frame, and the scraper strip is made of rubber.

[0017] As a further technical solution, the heating tube adopts a circular structure surrounding the stirring frame.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the glue coating assembly effectively solves the problem of uneven glue coating through the design of an auger pipe, a dispersing frame, and a glue scraper. The auger pipe evenly distributes glue to each discharge pipe, the solenoid valve precisely controls the glue amount, the glue outlet of the dispersing frame ensures even glue discharge, and the V-shaped glue scraper contacts the cardboard surface to smooth the glue, ensuring consistent glue thickness in all areas and avoiding excessive or insufficient glue in certain places. Meanwhile, the glue scraper is made of rubber and inserted into the bottom of the dispersing frame, allowing for quick replacement after wear, ensuring the stability of the glue coating effect, reducing product quality defects caused by glue coating problems, and improving the bonding quality of corrugated cardboard. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an isometric drawing of the present disclosure;

[0023] Figure 3 This is an isometric sectional view of the present disclosure;

[0024] Figure 4 This is another isometric sectional view of this disclosure;

[0025] Figure 5 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0026] In the diagram: 1. Equipment frame; 2. Glue tank; 3. Rectangular opening; 4. Glue application assembly; 4-1. Screwdriver pipe; 4-2. Discharge pipe; 4-3. Dispersing rack; 4-4. Glue outlet; 4-5. Glue scraper; 4-6. Solenoid valve; 4-7. Mixing rack; 4-8. Connecting rack; 4-9. Heating tube; 5. Conveying assembly; 5-1. Rectangular plate; 5-2. Support roller; 5-3. Conveying roller; 5-4. Drive wheel; 5-5. Pallet. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-5 As shown, it illustrates a gluing apparatus for corrugated cardboard production according to an embodiment of the present disclosure, comprising:

[0034] The equipment frame 1 and the glue container 2 are fixed to the outside of the equipment frame 1;

[0035] Glue application assembly 4 is disposed in the equipment frame 1;

[0036] A pair of rectangular openings 3 and a conveying assembly 5, wherein the rectangular openings 3 are opened on both sides of the equipment frame 1, and the conveying assembly 5 is disposed on the equipment frame 1;

[0037] The adhesive application assembly 4 includes an auger pipe 4-1, which is horizontally fixed inside the equipment frame 1. The lower end of the adhesive tank 2 is connected to the auger pipe 4-1. Several discharge pipes 4-2 are provided at the bottom of the auger pipe 4-1. A dispersing frame 4-3 is provided at the lower end of the discharge pipes 4-2. Several adhesive outlet holes 4-4 are opened on the bottom surface of the dispersing frame 4-3. A scraper strip 4-5 is provided at the bottom of the dispersing frame 4-3. A solenoid valve 4-6 is provided on the discharge pipes 4-2. A stirring frame 4-7 is provided at the top inside the adhesive tank 2. The stirring frame 4-7 is driven by electricity to rotate. A connecting frame 4-8 is provided at the top inside the adhesive tank 2. Several heating tubes 4-9 are provided on the connecting frame 4-8.

[0038] In some examples, an adhesive application assembly 4 is designed to achieve uniform adhesive application. This assembly includes a auger pipe 4-1 horizontally positioned within the equipment frame 1. The adhesive tank 2 is fixed to the outside of the equipment frame 1 and connected to the auger pipe 4-1 via a pipe. This connection ensures that the adhesive flows smoothly from the adhesive tank 2 to the auger pipe 4-1. Several discharge pipes 4-2 at the bottom of the auger pipe 4-1 provide multiple channels for adhesive output. A dispersing frame 4-3 connected to the lower end of each discharge pipe 4-2 further disperses the adhesive. Several adhesive outlet holes 4-4 on the bottom surface of the dispersing frame 4-3 allow the adhesive to be discharged in a relatively uniform manner. A scraper strip 4-5 at the bottom of the dispersing frame 4-3 contacts the corrugated cardboard during the adhesive application process, leveling the adhesive and ensuring uniform application. A solenoid valve 4-6 on the discharge pipe 4-2 precisely controls the adhesive flow rate, enabling on-demand adhesive supply. The stirring rack 4-7 at the top of the glue container 2 is electrically driven to rotate. The connection structure between the stirring rack 4-7 and the top of the glue container 2 is stable, ensuring that it can effectively stir the glue during rotation and prevent the glue from settling and clumping. Several heating tubes 4-9 are installed on the connecting frame 4-8 at the top of the glue container 2, which are evenly distributed inside the glue container 2. Through the fixed connection with the connecting frame 4-8, they heat the glue and ensure that the glue maintains good fluidity at a suitable temperature.

[0039] The gluing assembly 4, through the coordinated operation of its components, can stably dispense glue. The auger pipe 4-1 provides initial delivery and distribution of the glue, the solenoid valve 4-6 controls the flow rate, the dispersing frame 4-3 and the glue outlet 4-4 ensure uniform glue dispensing, and the glue scraper 4-5 further spreads the glue evenly, thus ensuring the gluing quality of the corrugated cardboard and providing a good foundation for subsequent production processes.

[0040] like Figures 1-5As shown in the figure, the conveying assembly 5 in this embodiment includes a pair of rectangular plates 5-1, each of which is disposed in the rectangular opening 3. The rectangular plates 5-1 are connected by a vertical linear drive. Several support rollers 5-2 are rotatably connected between the rectangular plates 5-1. A pair of conveying rollers 5-3 are rotatably connected inside the equipment frame 1. A drive wheel 5-4 is provided at one end of each conveying roller 5-3. The drive wheels 5-4 are connected by a belt drive. One of the conveying rollers 5-3 is rotated by a motor. A support plate 5-5 is provided between the rectangular plates 5-1.

[0041] In some examples, to achieve height-adjustable conveying, a conveying assembly 5 is designed. This assembly includes a pair of rectangular plates 5-1 positioned in rectangular openings 3 on both sides of the equipment frame 1 and connected via a vertical linear drive. This drive method allows the rectangular plates 5-1 to be adjusted vertically. Several support rollers 5-2 are rotatably connected between the rectangular plates 5-1. These support rollers 5-2 can rotate flexibly, providing support and a foundation for conveying the corrugated cardboard. A pair of conveyor rollers 5-3 are rotatably connected inside the equipment frame 1, with drive wheels 5-4 at one end connected via belt drive, forming a stable transmission system. One of the conveyor rollers 5-3 is controlled by a motor, which is connected to the conveyor roller 5-3 through a transmission structure, providing power to the conveyor roller 5-3. Support plates 5-5 positioned between the rectangular plates 5-1 cooperate with the support rollers 5-2 to jointly support the corrugated cardboard.

[0042] The conveying assembly 5 can adjust its height according to the thickness of the cardboard. Through vertical linear drive, it adjusts the position of the rectangular plate 5-1, thereby changing the height of the support roller 5-2 and the pallet 5-5 to accommodate corrugated cardboard of different thicknesses. Simultaneously, stable conveying is coordinated with gluing. A motor drives the conveyor roller 5-3 to rotate, which in turn drives another conveyor roller 5-3 via belt transmission. This allows the corrugated cardboard to move smoothly on the support roller 5-2 and the pallet 5-5. Working in conjunction with the gluing assembly 4, it ensures the cardboard maintains a stable conveying state during the gluing process, improving gluing efficiency and quality.

[0043] For example, such as Figure 1 As shown, both the dispersing frame 4-3 and the scraper strip 4-5 have a V-shaped structure.

[0044] In some examples, both the dispersing frame 4-3 and the scraper strip 4-5 have a V-shaped structure. This allows the glue discharged from the discharge pipe 4-2 to have a larger flow path on the surface of the dispersing frame 4-3, exiting through the glue outlet 4-4 on the bottom surface. The glue then disperses along the center of the V-shape towards the side walls. This structure further promotes uniform glue dispersion, preventing localized glue accumulation or uneven glue distribution. The glue is evenly scraped across the corrugations and troughs of the cardboard, ensuring consistent glue thickness. Simultaneously, the V-shaped scraper strip 4-5, upon contact with the cardboard, guides excess glue to both sides, preventing glue overflow that could contaminate the equipment or affect subsequent production processes, effectively improving the accuracy and cleanliness of the glue application.

[0045] For example, such as Figure 3 As shown, the lower end of the conveying roller 5-3 and the lower end of the scraper strip 4-5 are at the same plane height.

[0046] In some examples, the lower end of the conveyor roller 5-3 and the lower end of the scraper strip 4-5 are at the same plane height. This design ensures that the surface of the corrugated cardboard maintains a stable contact distance with the scraper strip 4-5 during conveying, guaranteeing uniform glue application. As the cardboard moves forward driven by the conveyor roller 5-3, the scraper strip 4-5, at the same plane height, can promptly smooth the glue on the cardboard surface, preventing inconsistent glue thickness or missed areas due to height differences.

[0047] For example, such as Figure 5 As shown, the scraper strip 4-5 is inserted and connected to the bottom of the dispersing frame 4-3, and the scraper strip 4-5 is made of rubber.

[0048] In some examples, the scraper strip 4-5 is inserted into the bottom of the dispersing frame 4-3, and the scraper strip 4-5 is made of rubber. The scraper strip 4-5 is connected to the dispersing frame 4-3 via an insert mechanism, making installation and removal of the scraper strip 4-5 very convenient. When the scraper strip 4-5 wears or is damaged after long-term use, the operator can quickly remove it from the bottom of the dispersing frame 4-3 and replace it with a new one, greatly reducing equipment maintenance time and costs.

[0049] For example, such as Figure 4 As shown, the heating tube 4-9 has a circular structure surrounding the stirring rack 4-7.

[0050] In some examples, the heating tubes 4-9 are arranged in a ring shape around the mixing rack 4-7. The ring-shaped heating tubes 4-9 are evenly distributed around the mixing rack 4-7, enabling omnidirectional heating of the adhesive in the glue container 2, avoiding heating dead zones and ensuring uniform heating of the adhesive. When the mixing rack 4-7 rotates and stirs the adhesive under electric drive, the ring-shaped heating tubes 4-9 continuously heat the adhesive, allowing it to absorb heat continuously during flow, maintaining it within a suitable temperature range and effectively improving the fluidity of the adhesive.

[0051] In actual use: Fix the equipment frame 1, install the glue tank 2 on the outside of the equipment frame 1, turn on the power and start the mixing rack 4-7 and heating tube 4-9 inside the glue tank 2. The mixing rack 4-7 rotates and stirs the glue to prevent sedimentation, and the heating tube 4-9 heats the glue to maintain its good fluidity. According to the thickness of the corrugated cardboard, adjust the height of the rectangular plate 5-1 through the vertical linear drive so that the support roller 5-2 and the pallet 5-5 are adapted to the thickness of the cardboard. Put the cardboard into the rectangular opening 3 on one side of the equipment frame 1, start the motor to drive the conveyor roller 5-3 to rotate, and make the other conveyor roller 5-3 rotate synchronously through the transmission wheel 5-4 and belt drive. The cardboard is smoothly conveyed on the conveyor roller 5-3, support roller 5-2 and pallet 5-5. The glue in the glue tank 2 flows into the auger pipe 4-1 through the pipe, and is then transported to each discharge pipe 4-2 through the auger pipe 4-1. The solenoid valve 4-6 is opened to control the glue flow rate. The glue flows from the discharge pipe 4-2 into the dispersing rack 4-3, and is evenly discharged through the glue outlet hole 4-4 on the bottom surface of the dispersing rack 4-3. When the cardboard passes under the dispersing rack 4-3, the V-shaped glue scraper 4-5 scrapes the glue evenly, ensuring that the cardboard surface is evenly coated with glue. The glued cardboard is output from the rectangular opening 3 on the other side of the equipment frame 1.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A gluing device for corrugated cardboard production, characterized in that, include: Equipment rack (1) and glue container (2), wherein the glue container (2) is fixed to the outside of the equipment rack (1); An adhesive application assembly (4) is disposed in the equipment frame (1); A pair of rectangular openings (3) and a conveying assembly (5), the rectangular openings (3) being opened on both sides of the equipment frame (1), and the conveying assembly (5) being disposed on the equipment frame (1); The adhesive application assembly (4) includes an auger pipe (4-1), which is horizontally fixed inside the equipment frame (1). The lower end of the adhesive tank (2) is connected to the auger pipe (4-1). Several discharge pipes (4-2) are provided at the bottom of the auger pipe (4-1). A dispersing frame (4-3) is provided at the lower end of the discharge pipes (4-2). Several adhesive outlet holes (4-4) are opened on the bottom surface of the dispersing frame (4-3). A scraper strip (4-5) is provided at the bottom of the dispersing frame (4-3).

2. The gluing device for corrugated cardboard production according to claim 1, characterized in that, A solenoid valve (4-6) is installed on the discharge pipe (4-2), a stirring rack (4-7) is installed at the top of the glue tank (2), the stirring rack (4-7) is driven to rotate by electricity, a connecting rack (4-8) is installed at the top of the glue tank (2), and several heating tubes (4-9) are installed on the connecting rack (4-8).

3. The gluing device for corrugated cardboard production according to claim 1, characterized in that, The conveying assembly (5) includes a pair of rectangular plates (5-1), each of which is disposed in the rectangular opening (3). The rectangular plates (5-1) are connected by a vertical linear drive, and a plurality of support rollers (5-2) are rotatably connected between the rectangular plates (5-1).

4. The gluing device for corrugated cardboard production according to claim 3, characterized in that, The equipment frame (1) is internally connected to a pair of conveying rollers (5-3). One end of each conveying roller (5-3) is provided with a drive wheel (5-4). The drive wheels (5-4) are connected by a belt drive. One of the conveying rollers (5-3) is rotated by a motor. A support plate (5-5) is provided between the rectangular plates (5-1).

5. The gluing device for corrugated cardboard production according to claim 1, characterized in that, The dispersing rack (4-3) and the scraper strip (4-5) both have a V-shaped structure.

6. The gluing device for corrugated cardboard production according to claim 4, characterized in that, The lower end of the conveying roller (5-3) and the lower end of the scraper strip (4-5) are at the same plane height.

7. The gluing device for corrugated cardboard production according to claim 1, characterized in that, The scraper strip (4-5) is inserted and connected to the bottom of the dispersing frame (4-3), and the scraper strip (4-5) is made of rubber.

8. The gluing device for corrugated cardboard production according to claim 2, characterized in that, The heating tube (4-9) is arranged in a ring shape around the stirring rack (4-7).

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