Starch glue film forming device

Abstract

This disclosure relates to the technical field of starch adhesive film-forming processing. One embodiment of this disclosure provides a starch adhesive film-forming device, which includes: a base and a material tank. The material tank is fixed on the base, a discharge chamber plate is disposed on the material tank, a conveying extrusion assembly is disposed in the base and the material tank, and a forming and cooling assembly is disposed on the base. The forming and cooling assembly includes a vertical plate, a forming roller is rotatably connected to the side surface of the vertical plate, the forming roller is driven to rotate by electricity, and a cooling cavity is opened inside the forming roller. A pair of uprights are fixedly connected to the surface of the base, and a sealing plate is fixedly connected to the side end face of the uprights. Through the above technical solution, the technical problems of existing technologies that mostly adopt a single-channel coating and curing mode, require the adhesive to go through a long conveying path to complete drying after coating, have limited single-batch processing capacity, and are prone to rework due to uneven coating thickness during equipment operation, which seriously restricts the continuous production rhythm.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of starch adhesive film-forming processing, and more specifically, to a starch adhesive film-forming apparatus. Background Technology

[0002] In industries such as packaging, papermaking, and printing, starch adhesives have become widely used bonding materials due to their advantages such as being environmentally friendly, low-cost, and biodegradable. Starch adhesive film formation, as a key step in its production process, directly affects the mechanical properties, water resistance, and stability of the final product; therefore, increasingly stringent requirements are placed on the efficiency of film-forming equipment and the quality of the formed product. Currently, traditional starch adhesive film-forming equipment generally suffers from two major problems: First, low production efficiency. Most equipment employs a single-channel coating and curing mode, requiring the adhesive to undergo a lengthy conveying path for drying after coating. This results in limited batch throughput, and uneven coating thickness during operation easily leads to rework, severely hindering continuous production. Second, poor cooling and forming effect. Cooling systems are mostly based on single air or water cooling methods, leading to uneven cooling rates and causing wrinkles, bubbles, or localized embrittlement on the film surface. Especially when processing high-viscosity starch adhesives, the film is prone to stress concentration during the cooling stage due to excessive internal and external temperature differences, resulting in film breakage or performance degradation, making it difficult to meet the quality standards of high-precision products. Furthermore, existing equipment typically has separate drying and cooling stages, resulting in low heat utilization, large equipment footprint, and cumbersome operation, further increasing energy consumption and labor costs. Therefore, developing a starch adhesive film-forming device that can simultaneously improve production efficiency and cooling / forming effects has become a pressing technical challenge for the industry. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a starch adhesive film-forming device, which solves the technical problems of existing technologies that mostly adopt a single-channel coating and curing mode, require the adhesive to go through a long conveying path to complete drying after coating, have limited single-batch processing capacity, and are prone to rework due to uneven coating thickness during equipment operation, which seriously restricts the pace of continuous production.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a starch gelling film forming apparatus, comprising: A base and a material tank, wherein the material tank is fixed on the base; The discharge chamber plate and the conveying extrusion assembly are provided, wherein the discharge chamber plate is disposed on the material tank and the conveying extrusion assembly is disposed in the base and the material tank; A molding cooling assembly is disposed on the base; The molding and cooling assembly includes a vertical plate, a molding roller rotatably connected to the side surface of the vertical plate, the molding roller being driven to rotate by electricity, a cooling cavity being opened inside the molding roller, and a pair of uprights fixedly connected to the surface of the base, with a sealing plate fixedly connected to the side end face of the uprights.

[0005] As a further technical solution, a partition is provided on the side surface of the sealing plate, the partition is located inside the cooling cavity, a flow gap is left between one end of the partition and the inner end face of the cooling cavity, and a pair of circulation pipes are provided on the side surface of the sealing plate.

[0006] As a further technical solution, an outer frame is provided on the side surface of the discharge chamber plate, and several cooling fans are installed on the top of the outer frame. The cooling fans face the forming roller, and a shovel seat is provided on the base surface. The upper end surface of the shovel seat is attached to the surface of the forming roller.

[0007] As a further technical solution, a pair of fixing plates are provided on the surface of the base, and a pair of leveling rollers are rotatably connected between the fixing plates, one of the leveling rollers being driven to rotate by electricity.

[0008] As a further technical solution, the conveying extrusion assembly includes a stirring shaft, which is electrically driven to rotate at the top of the material tank. The stirring shaft is equipped with several shearing frames, and the lower end of the stirring shaft is equipped with several stirring rods.

[0009] As a further technical solution, a number of inner frames are fixedly connected to the inner wall of the material tank, and heating tubes are installed in the inner frames. A conveying pipe is horizontally connected to the bottom of the material tank, and one end of the conveying pipe is connected to the side of the discharge chamber plate.

[0010] As a further technical solution, the conveying pipe is equipped with a conveying auger that is driven by electricity to rotate, the bottom of the discharge chamber plate is provided with a pair of discharge ports, and the bottom of the discharge chamber plate is provided with a leveling layer.

[0011] As a further technical solution, the bottom surface of the discharge chamber plate is an arc-shaped structure.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the forming and cooling assembly solves the problem of uneven cooling in traditional devices through a highly efficient cooling design. The spiral channel of the cooling chamber extends the contact time of the coolant, and the combination of water cooling and air cooling accelerates curing; the rotating forming roller enables continuous film formation, the shovel seat precisely peels off the film to avoid damage, and the leveling roller eliminates wrinkles. This structure improves the flatness and consistency of the film material, reduces rework caused by improper cooling, meets the film formation requirements of high-viscosity starch adhesives, and ensures a continuous production rhythm. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle; In the diagram: 1. Base; 2. Material tank; 3. Discharge chamber plate; 4. Molding and cooling assembly; 4-1. Vertical plate; 4-2. Molding roller; 4-3. Cooling chamber; 4-4. Sealing plate; 4-5. Partition plate; 4-6. Circulation pipe; 4-7. Outer frame; 4-8. Cooling fan; 4-9. Shovel seat; 4-10. Fixing plate; 4-11. Leveling roller; 4-12. Vertical frame; 5. Conveying and extrusion assembly; 5-1. Agitating shaft; 5-2. Shearing frame; 5-3. Agitating rod; 5-4. Inner frame; 5-5. Heating tube; 5-6. Conveying pipe; 5-7. Conveying auger; 5-8. Discharge port; 5-9. Leveling layer. Detailed Implementation

[0015] 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.

[0016] 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."

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] like Figures 1-4 As shown, it illustrates a starch gelling film forming apparatus according to an embodiment of the present disclosure, comprising: A base 1 and a material tank 2, wherein the material tank 2 is fixed on the base 1; The discharge chamber plate 3 and the conveying extrusion assembly 5 are provided. The discharge chamber plate 3 is disposed on the material tank 2, and the conveying extrusion assembly 5 is disposed in the base 1 and the material tank 2. A molding cooling assembly 4 is disposed on the base 1; The molding and cooling assembly 4 includes a vertical plate 4-1, with a molding roller 4-2 rotatably connected to the side surface of the vertical plate 4-1. The molding roller 4-2 is electrically driven to rotate, and a cooling chamber 4-3 is formed inside the molding roller 4-2. A pair of uprights 4-12 are fixedly connected to the surface of the base 1, and a sealing plate 4-4 is fixedly connected to the side end face of the uprights 4-12. A partition 4-5 is provided on the side surface of the sealing plate 4-4, and the partition 4-5 is located inside the cooling chamber 4-3. A flow gap is left between one end of the partition 4-5 and the inner end face of the cooling chamber 4-3. A pair of circulation pipes 4-6 are provided on the side surface of the sealing plate 4-4, and an outer frame 4-7 is provided on the side surface of the discharge chamber plate 3. Several cooling fans 4-8 are installed on the top of the outer frame 4-7, and the cooling fans 4-8 face the forming roller 4-2. A shovel seat 4-9 is provided on the surface of the base 1, and the upper end face of the shovel seat 4-9 is attached to the surface of the forming roller 4-2. A pair of fixing plates 4-10 are provided on the surface of the base 1, and a pair of leveling rollers 4-11 are rotatably connected between the fixing plates 4-10. One of the leveling rollers 4-11 is driven to rotate by electricity.

[0022] In some examples, a molding and cooling assembly 4 is designed to achieve the curing and film formation of starch adhesive. This assembly includes a molding roller 4-2 driven by a motor and located on the side surface of a vertical plate 4-1. The roller surface is used to receive the extruded starch adhesive, and the internal cooling chamber 4-3 is a hollow structure that allows coolant to flow through it. A pair of uprights 4-12 on the surface of the base 1 support a sealing plate 4-4. A partition 4-5 on the side surface of the sealing plate 4-4 is inserted into the cooling chamber 4-3, dividing the cooling chamber 4-3 into a spiral channel. The flow gap between one end of the partition 4-5 and the inner end face of the cooling chamber 4-3 allows the coolant to circulate along the channel. A pair of circulation pipes 4-6 on the side surface of the sealing plate 4-4 are connected to the inlet and outlet of the cooling chamber 4-3, respectively, forming a loop with the external refrigeration system. A cooling fan 4-8 on the top of the outer frame 4-7 on the side surface of the discharge chamber plate 3 faces the molding roller 4-2, providing air cooling for the roller surface. The upper surface of the shovel seat 4-9 on the base 1 is attached to the surface of the forming roller 4-2 to peel the formed film off the roller surface. A pair of leveling rollers 4-11 are distributed vertically between the fixing plates 4-10, one of which is driven by a motor to rotate and flatten the peeled film. During operation, the starch adhesive is extruded onto the surface of the forming roller 4-2 and spreads out as the roller rotates. Coolant enters the cooling chamber 4-3 through the circulation pipe 4-6 and flows along the spiral channel formed by the partition 4-5, carrying away heat through heat exchange and rapidly solidifying the starch adhesive into a film. Simultaneously, the cooling fan 4-8 blows air onto the roller surface to enhance the cooling effect. The solidified film is peeled off by the scraper 4-9, flattened by the leveling roller 4-11, and then conveyed to the next process. The spiral channel cooling design extends the coolant contact time, improving heat exchange efficiency; the combination of air cooling and water cooling accelerates curing, adapting to continuous film formation requirements; the fit between the scraper 4-9 and the forming roller 4-2 ensures complete film peeling and avoids damage; the flattening treatment by the leveling roller 4-11 eliminates film wrinkles and improves film quality. This component, through efficient cooling and precise forming, achieves stable starch adhesive film formation and ensures uniform film morphology.

[0023] like Figures 1-4 As shown in the figure, the conveying extrusion assembly 5 in this embodiment includes a stirring shaft 5-1, which is electrically driven to rotate at the top of the material tank 2. Several shearing frames 5-2 are provided on the stirring shaft 5-1, and several stirring rods 5-3 are provided at the lower end of the stirring shaft 5-1. Several inner frames 5-4 are fixedly connected to the inner wall of the material tank 2. Heating tubes 5-5 are installed in the inner frames 5-4. A conveying pipe 5-6 is horizontally connected to the bottom of the material tank 2. One end of the conveying pipe 5-6 is connected to the side of the discharge chamber plate 3. A conveying auger 5-7 that is electrically driven to rotate is provided in the conveying pipe 5-6. A pair of discharge ports 5-8 are opened at the bottom of the discharge chamber plate 3. A leveling layer 5-9 is provided at the bottom of the discharge chamber plate 3.

[0024] In some examples, to achieve stable delivery and uniform extrusion of the starch adhesive, a delivery and extrusion assembly 5 is designed. This assembly includes a stirring shaft 5-1 at the top of the tank 2, driven by a motor. Shearing frames 5-2 on the shaft are arranged in a cross shape to shear and disperse the starch adhesive. A stirring rod 5-3 at the lower end is used to mix the materials and prevent sedimentation. Several inner frames 5-4 are distributed around the inner wall of the tank 2. Heating tubes 5-5 within the frames, when energized, heat the starch adhesive inside the tank 2, maintaining a suitable flow temperature. A delivery pipe 5-6 extends horizontally at the bottom of the tank 2, one end connected to the side of the discharge chamber plate 3. An internal delivery auger 5-7, driven by a motor, rotates to push the starch adhesive in the tank 2 towards the discharge chamber plate 3. A pair of discharge ports 5-8 are evenly distributed at the bottom of the discharge chamber plate 3. The bottom leveling layer 5-9 is made of wear-resistant material and makes slight contact with the surface of the forming roller 4-2, scraping the extruded starch adhesive into a uniform thickness.

[0025] During operation, heating tube 5-5 heats the starch adhesive in tank 2, while stirring shaft 5-1 drives shear frame 5-2 and stirring rod 5-3 to rotate, ensuring uniform heating and maintaining the material's fluidity. The rotating conveyor auger 5-7 pushes the starch adhesive along conveying pipe 5-6 to discharge chamber plate 3, where it is extruded through discharge port 5-8 onto the surface of forming roller 4-2. The leveling layer 5-9 smooths the extruded material, ensuring a consistent initial film thickness. The surrounding distribution of heating tubes 5-5 ensures uniform temperature within tank 2, preventing reduced fluidity due to localized cooling. The shearing action of shear frame 5-2 breaks up material agglomerations, improving material uniformity. The continuous pushing of conveyor auger 5-7 provides stable feeding, working in conjunction with discharge port 5-8 to form continuous extrusion. The leveling action of leveling layer 5-9 ensures consistent film thickness, laying the foundation for subsequent cooling and forming. This component combines heating and insulation with shearing and conveying to achieve stable delivery and precise extrusion of starch adhesive, meeting the requirements of continuous film forming processes.

[0026] For example, such as Figure 4 As shown, the bottom surface of the discharge chamber plate 3 is an arc-shaped structure.

[0027] In some examples, the bottom surface of the discharge chamber plate 3 is an arc-shaped structure that matches the curvature of the outer surface of the forming roller 4-2. This design allows the leveling layer 5-9 at the bottom of the discharge chamber plate 3 to adhere more closely to the surface of the forming roller 4-2, ensuring that the extruded starch adhesive is evenly spread on the roller surface and avoiding uneven film thickness due to uneven gaps. At the same time, the arc-shaped structure guides the starch adhesive to transition smoothly along the roller surface, reducing adhesive accumulation or breakage, improving the continuity and stability of film formation, and providing a good foundation for subsequent cooling and curing.

[0028] In actual use: the heating tube 5-5 in the material tank 2 heats the starch adhesive, and the stirring shaft 5-1 drives the shear frame 5-2 and the stirring rod 5-3 to rotate, making the adhesive flow evenly. The conveying auger 5-7 pushes the adhesive through the conveying pipe 5-6 to the discharge chamber plate 3, and it is extruded from the discharge port 5-8 onto the surface of the forming roller 4-2. The leveling layer 5-9 scrapes the adhesive to a uniform thickness. While the forming roller 4-2 rotates, the cooling chamber 4-3 is filled with coolant that circulates along the spiral channel formed by the partition plate 4-5. The cooling fan 4-8 blows air onto the roller surface to accelerate the curing of the adhesive into a film. The cured film is peeled off by the shovel seat 4-9, flattened by the leveling roller 4-11, and then conveyed. The entire process achieves continuous film formation without the need for a long conveying path, thus improving production efficiency.

[0029] 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 starch gel film-forming device, characterized in that, include: A base (1) and a material tank (2), wherein the material tank (2) is fixed on the base (1); The discharge chamber plate (3) and the conveying extrusion assembly (5) are provided, wherein the discharge chamber plate (3) is disposed on the material tank (2) and the conveying extrusion assembly (5) is disposed in the base (1) and the material tank (2); A molding cooling assembly (4) is disposed on the base (1); The molding and cooling assembly (4) includes a vertical plate (4-1), a molding roller (4-2) is rotatably connected to the side surface of the vertical plate (4-1), the molding roller (4-2) is driven to rotate by electricity, a cooling chamber (4-3) is opened in the molding roller (4-2), and a pair of uprights (4-12) are fixedly connected to the surface of the base (1), and a sealing plate (4-4) is fixedly connected to the side end face of the uprights (4-12).

2. The starch gel film-forming device according to claim 1, characterized in that, A partition (4-5) is provided on the side surface of the sealing plate (4-4). The partition (4-5) is located inside the cooling chamber (4-3). A flow gap is left between one end of the partition (4-5) and the inner end face of the cooling chamber (4-3). A pair of circulation pipes (4-6) are provided on the side surface of the sealing plate (4-4).

3. The starch gel film-forming device according to claim 2, characterized in that, The discharge chamber plate (3) is provided with an outer frame (4-7) on its side surface. Several cooling fans (4-8) are installed on the top of the outer frame (4-7). The cooling fans (4-8) face the forming roller (4-2). The base (1) is provided with a shovel seat (4-9). The upper end face of the shovel seat (4-9) is attached to the surface of the forming roller (4-2).

4. The starch gel film-forming apparatus according to claim 3, characterized in that, The base (1) has a pair of fixing plates (4-10) on its surface, and a pair of leveling rollers (4-11) are rotatably connected between the fixing plates (4-10), one of which is driven to rotate by electricity.

5. The starch gel film-forming apparatus according to claim 1, characterized in that, The conveying extrusion assembly (5) includes a stirring shaft (5-1), which is driven by electricity to rotate at the top of the material tank (2). Several shearing frames (5-2) are provided on the stirring shaft (5-1), and several stirring rods (5-3) are provided at the lower end of the stirring shaft (5-1).

6. The starch gel film-forming apparatus according to claim 5, characterized in that, The inner wall of the material tank (2) is fixedly connected with several inner frames (5-4), and heating tubes (5-5) are installed in the inner frames (5-4). The bottom of the material tank (2) is horizontally connected with a conveying pipe (5-6), and one end of the conveying pipe (5-6) is connected to the side of the discharge chamber plate (3).

7. The starch gel film-forming apparatus according to claim 6, characterized in that, The conveying pipe (5-6) is equipped with a conveying auger (5-7) that is driven by electricity to rotate. The bottom of the discharge chamber plate (3) is provided with a pair of discharge ports (5-8). The bottom of the discharge chamber plate (3) is provided with a leveling layer (5-9).

8. The starch gel film-forming apparatus according to claim 1, characterized in that, The bottom surface of the discharge chamber plate (3) is an arc-shaped structure.

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