An overflow-free, environmentally friendly composite paperboard anti-overflow adhesive pressing device

Abstract

This utility model discloses a non-overflowing, environmentally friendly composite paperboard anti-overflowing glue pressing device, including a base, a pressure platform on the top of the base, a pressing plate fixed above the pressure platform via a lifting frame, a main pressing block in the central area of ​​the lower surface of the pressing plate, and a floating annular glue-limiting component surrounding the outer periphery of the main pressing block. The annular glue-limiting component is connected to the pressing plate via multiple elastic support columns, and a flow-guiding frame is embedded in the edge of the upper surface of the pressure platform. This non-overflowing, environmentally friendly composite paperboard anti-overflowing glue pressing device can effectively limit glue overflow, improve product appearance quality, reduce glue waste and equipment pollution, and has a simple structure and strong practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of paperboard processing equipment, specifically to a non-overflowing, environmentally friendly composite paperboard anti-overflowing pressing device. Background Technology

[0002] With the popularization of environmental protection concepts and the increasing demand for green materials in the packaging industry, environmentally friendly composite paperboard is widely used in various fields such as food, electronics, and daily chemicals due to its advantages such as recyclability and low pollution. In the production process of composite paperboard, adhesives are usually used to press multiple layers of paperboard together to improve its strength and functionality.

[0003] Currently, in the lamination process of environmentally friendly composite paperboard, water-based or hot-melt adhesives are typically applied between the paper layers, and then pressure is applied by a laminating device to bond and cure them. However, existing laminating devices mostly use a flat, integral pressure plate structure, which cannot effectively control the flow boundary of the adhesive during lamination. Because the adhesive layer becomes fluid under pressure, and the edges of the pressure plate lack physical restraint on the adhesive, the adhesive easily squeezes out from the perimeter of the paperboard layers or from local gaps, forming adhesive overflow. This not only affects the flatness and aesthetics of the product edges but may also contaminate the equipment and increase cleaning costs. Utility Model Content

[0004] The purpose of this utility model is to provide an overflow-free environmentally friendly composite paperboard anti-overflow glue pressing device to solve the problem mentioned in the background art that the current environmentally friendly composite paperboard pressing devices use a planar integral pressing plate structure and lack effective constraints on glue flow, which causes glue to easily overflow from the edge of the paperboard, affecting the product appearance, polluting the equipment, and increasing cleaning costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a non-overflowing environmentally friendly composite paperboard anti-overflowing glue pressing device, including a base, a pressure platform on the top of the base, a pressing plate fixed above the pressure platform by a lifting frame, a main pressing block in the central area of ​​the lower surface of the pressing plate, a floating annular glue limiting component surrounding the outer periphery of the main pressing block, the annular glue limiting component being connected to the pressing plate by multiple elastic support columns, and a flow guiding frame embedded in the edge of the upper surface of the pressure platform.

[0006] Preferably, the annular adhesive limiting component includes an annular pressure ring and an annular sealing lip integrally formed at its bottom, the annular sealing lip extending downward and having an inwardly inclined conical structure.

[0007] Preferably, the elastic support column is a silicone buffer column, with its upper end fixed in the mounting hole of the pressing plate and its lower end fixed to the top outer wall of the annular pressure ring.

[0008] Preferably, the flow guide frame is composed of four L-shaped enclosure units spliced ​​together, and the L-shaped enclosure units are installed by engaging with pin holes opened on the pressure plate through positioning pins.

[0009] Preferably, the inner wall of the L-shaped enclosure unit is provided with an upward-opening flow guide groove, and the bottom of the flow guide groove is connected to an adhesive outlet hole that penetrates the pressure platform.

[0010] Preferably, the lower surface of the main pressure block is a multi-level stepped micro-dome structure, including a circular boss located at the center, and a first annular step and a second annular step arranged sequentially from the inside to the outside. The lower surface of the circular boss is higher than the first annular step, the lower surface of the first annular step is higher than the second annular step, and a closed flow guide micro-groove is provided circumferentially at the junction of the first annular step and the second annular step.

[0011] Compared with existing technologies, the beneficial effects of this utility model are: this non-overflowing environmentally friendly composite paperboard anti-overflowing pressing device can effectively limit glue overflow, improve product appearance quality, reduce glue waste and equipment pollution, and has a simple structure and strong practicality. Through the coordinated operation of the main pressing block and the floating annular glue-limiting component, combined with the buffering pre-compression effect of the elastic support column, and the closed glue constraint cavity formed by the flow guide frame and the glue-limiting component, the device achieves active blocking and dynamic sealing of the adhesive flow boundary, fundamentally solving the glue overflow problem caused by the lack of edge constraint in traditional flat pressing plates. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an anti-overflow adhesive pressing device for environmentally friendly composite paperboard without adhesive overflow according to this utility model; Figure 2 This is a schematic diagram of the bottom structure of the pressing plate of the non-overflowing adhesive environmentally friendly composite paperboard anti-overflow adhesive pressing device of this utility model; Figure 3 This is a top view of the base of the anti-overflow adhesive pressing device for environmentally friendly composite paperboard, which is free of adhesive overflow according to this utility model.

[0013] In the diagram: 1. Base; 2. Pressure plate; 3. Pressing plate; 4. Main pressure block; 41. Circular boss; 42. First annular step; 43. Second annular step; 5. Annular adhesive limiting component; 51. Annular pressure ring; 52. Annular sealing lip; 6. Elastic support column; 7. Flow guide frame; 71. L-shaped enclosure unit; 72. Positioning pin; 73. Flow guide groove; 74. Adhesive outlet. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a non-overflowing, environmentally friendly composite paperboard anti-overflowing glue pressing device, including a base 1, a pressure platform 2 on the top of the base 1, the pressure platform 2 being fixed to the base 1 with bolts to ensure a firm installation and easy disassembly and maintenance, a pressing plate 3 being fixed above the pressure platform 2 via a lifting frame, the lifting frame consisting of four columns and a hydraulic cylinder in the middle, the columns, the pressing plate 3, and the pressure platform 2 being connected by precision guide sleeves to achieve stable lifting and lowering, avoiding deviation, a main pressing block 4 being provided in the central area of ​​the lower surface of the pressing plate 3, a floating annular glue-limiting component 5 being provided around the outer periphery of the main pressing block 4, the annular glue-limiting component 5 maintaining a certain gap with the main pressing block 4 to ensure independent movement without interference, the annular glue-limiting component 5 being connected by multiple The elastic support column 6 is connected to the pressing plate 3, and a flow guide frame 7 is embedded in the upper edge of the pressure platform 2. The flow guide frame 7 and the floating annular glue limiting component 5 cooperate vertically in the pressing state to form a closed glue constraint cavity. When the pressing plate 3 moves down to press the multi-layer environmentally friendly composite paperboard stacked on the pressure platform 2, the main pressing block 4 first applies pressure to the central area of ​​the paperboard. At the same time, the floating annular glue limiting component 5 moves down synchronously under the buffering effect of the elastic support column 6 and contacts the edge area of ​​the paperboard earlier or simultaneously with the main pressing block 4. It is vertically aligned with the flow guide frame 7 embedded on the pressure platform 2, thereby forming a closed glue constraint cavity around the paperboard pressing area. This constraint cavity is formed by the tight fit between the annular glue limiting component 5 and the flow guide frame 7. This effectively blocks the path of the fluid adhesive that overflows along the edge of the cardboard after being pressed, confining the adhesive within the bonding area formed by the pressure of the main pressure block 4. This prevents adhesive from squeezing out from around the cardboard layers or into gaps, thus solving the problem of adhesive overflow caused by the lack of physical constraint on the adhesive flow boundary due to the use of a planar integral pressure plate structure in existing technologies. This significantly improves the flatness and appearance quality of the product edges, while reducing adhesive waste and equipment contamination. The annular adhesive limiting component 5 includes an annular pressure ring 51 and an annular sealing lip 52 integrally formed at its bottom. The annular pressure ring 51 and the annular sealing lip 52 are made of wear-resistant polymer to improve durability. The annular sealing lip 52 extends downwards and has an inwardly inclined conical structure. This structure... During the process, the annular sealing lip 52 first adheres to the edge of the cardboard, and due to the inwardly inclined conical structure, it generates an inward pressing force, enhancing the sealing effect of the adhesive and effectively preventing the adhesive from overflowing along the side of the cardboard. The elastic support column 6 is a silicone buffer column, with its upper end fixed in the mounting hole of the pressing plate 3 and its lower end fixed to the outer wall of the top of the annular pressure ring 51. This structure enables the annular adhesive limiting component 5 to have pre-pressure buffering and adaptive downward movement capabilities during the pressing process, ensuring that the annular sealing lip 52 contacts the edge of the cardboard before or simultaneously with the main pressing block 4, forming an effective seal. At the same time, it avoids local pressing failure caused by uneven cardboard thickness. The flow guiding frame 7 is composed of four L-shaped enclosure units 71 spliced ​​together. The L-shaped enclosure unit 71 is installed by engaging the pin holes opened on the pressure table 2 through the positioning pins 72.Each L-shaped enclosure unit 71 has slots at both ends. Adjacent units are nested together through these slots, further enhancing the stability and sealing performance of the overall structure. This structure facilitates the quick assembly and disassembly of the flow guide frame 7. Simultaneously, the splicing of the L-shaped enclosure units 71 allows for flexible adaptation to different sized cardboard pressing areas, ensuring the overall frame is stably positioned and providing reliable support for forming a complete sealed cavity with the annular glue-limiting component 5. The inner wall of the L-shaped enclosure unit 71 has an upward-opening flow guide groove 73. The bottom of the flow guide groove 73 is connected to a glue outlet 74 penetrating the pressure platform 2. This structure allows for the temporary collection of a very small amount of glue that breaks through the sealing area via the flow guide groove 73 and its flow out through the glue outlet 74, preventing glue accumulation on the surface of the pressure platform 2 or contaminating the equipment. This facilitates cleaning and maintains a clean pressing environment. The lower surface of the main pressure block 4 is... The multi-tiered, stepped micro-dome structure includes a central circular boss 41 and a first annular step 42 and a second annular step 43 arranged sequentially from the inside out. The lower surface of the circular boss 41 is higher than the first annular step 42, and the lower surface of the first annular step 42 is higher than the second annular step 43. A closed flow-guiding micro-groove is circumferentially formed at the junction of the first annular step 42 and the second annular step 43. During the pressing process, the main pressure block 4 applies pressure progressively from the center to the edge, causing the adhesive to flow inwards preferentially rather than overflow under pressure. Simultaneously, the flow-guiding micro-groove can temporarily accommodate a small amount of outward-moving adhesive, forming a dual anti-overflow effect of cohesion and sealing in conjunction with the outer adhesive-limiting components. This effectively suppresses adhesive extrusion from between cardboard layers. Furthermore, the micro-texture inside the flow-guiding micro-groove helps to further guide the adhesive back to the bonding area, reducing the risk of overflow.

[0016] Working Principle: When using this non-overflowing environmentally friendly composite paperboard anti-overflow pressing device, first place the multi-layer environmentally friendly composite paperboard to be pressed on the pressure table 2, ensuring its correct position. Then start the equipment, causing the pressing plate 3 to slowly descend via the lifting frame. During this process, the central circular protrusion 41 of the main pressing block 4 first contacts the center area of ​​the paperboard, applying initial pressure. At the same time, the elastic support column 6 provides a buffering effect, causing the floating annular glue-limiting component 5 to move down synchronously and contact the edge area of ​​the paperboard earlier or simultaneously with the main pressing block 4. As the pressing plate 3 continues to descend, the annular sealing lip... 52. The paperboard edge is tightly fitted to form a preliminary seal. At this time, the flow guide frame 7 and the annular glue limiting component 5 are aligned and cooperate to form a closed glue constraint cavity around the paperboard. As the pressure gradually increases, the first annular step 42 and the second annular step 43 contact the paperboard surface in sequence to achieve progressive pressure from the center to the edge. If a small amount of glue breaks through the sealing area, it will be temporarily collected by the flow guide groove 73 on the inner wall of the L-shaped enclosure unit 71 and flow out through the glue outlet 74. After the entire pressing process is completed, the pressing plate 3 rises and the pressed paperboard is taken out, thus completing a series of tasks.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-overflowing, environmentally friendly composite paperboard anti-overflowing pressing device, comprising a base (1), a pressure platform (2) on the top of the base (1), and a pressing plate (3) fixed above the pressure platform (2) by a lifting frame, characterized in that: The lower surface of the pressing plate (3) is provided with a main pressing block (4) in the central area. The outer periphery of the main pressing block (4) is provided with a floating annular glue limiting component (5). The annular glue limiting component (5) is connected to the pressing plate (3) through multiple elastic support columns (6). The upper surface edge of the pressure platform (2) is fitted with a flow guiding frame (7).

2. The overflow-free environmentally friendly composite paperboard anti-overflow adhesive pressing device according to claim 1, characterized in that: The annular adhesive limiting component (5) includes an annular pressure ring (51) and an annular sealing lip (52) integrally formed at its bottom. The annular sealing lip (52) extends downward and has an inwardly inclined conical structure.

3. The overflow-free environmentally friendly composite paperboard anti-overflow adhesive pressing device according to claim 1, characterized in that: The elastic support column (6) is a silicone buffer column, with its upper end fixed in the mounting hole of the pressing plate (3) and its lower end fixed to the top outer wall of the annular pressure ring (51).

4. The overflow-free environmentally friendly composite paperboard anti-overflow pressing device according to claim 1, characterized in that: The flow guide frame (7) is composed of four L-shaped enclosure units (71) spliced ​​together. The L-shaped enclosure unit (71) is installed by cooperating with the pin hole opened on the pressure platform (2) through the positioning pin (72).

5. The overflow-free environmentally friendly composite paperboard anti-overflow pressing device according to claim 4, characterized in that: The inner wall of the L-shaped enclosure unit (71) is provided with an upward-opening flow guide groove (73), and the bottom of the flow guide groove (73) is connected to an adhesive outlet hole (74) that penetrates the pressure plate (2).

6. The overflow-free environmentally friendly composite paperboard anti-overflow pressing device according to claim 1, characterized in that: The lower surface of the main pressure block (4) is a multi-level stepped micro-dome structure, including a circular boss (41) located in the center, and a first annular step (42) and a second annular step (43) arranged sequentially from the inside to the outside. The lower surface of the circular boss (41) is higher than the first annular step (42), the lower surface of the first annular step (42) is higher than the second annular step (43), and a closed flow guide micro-groove is provided circumferentially at the junction of the first annular step (42) and the second annular step (43).

Images