A high-sealing glue pot mechanism of an edge banding machine

Abstract

The utility model relates to the technical field of edge banding machine, especially a high sealing glue pot mechanism of edge banding machine, including glue guide base, glue axle, sealing ring combination and bearing seat combination, and the glue axle of glue guide base connecting end is provided with high sealing structure, the sealing structure includes copper bush, and the copper bush end surface that contacts with the glue axle upper end smooth surface is set into bevel, the copper bush inner wall is provided with multilayer spiral groove, and the spiral direction of multilayer spiral groove is set up with the reverse direction of glue axle rotation direction, the utility model discloses through setting bevel and reverse spiral groove's double resistance design of copper bush, effectively suppresses the glue water upsurge, and many ways prevent glue water structure protected sealing ring combination and bearing seat combination and other core parts, avoid the glue water leakage to sealing ring and bearing area, reduce abrasion and corrosion, prolong the overall mechanism life.

Description

Technical Field

[0001] This utility model relates to the field of edge banding machine technology, and in particular to a high-sealing glue pot mechanism for an edge banding machine. Background Technology

[0002] As a core piece of equipment in panel furniture manufacturing, the sealing performance of the glue pot mechanism of an edge banding machine directly determines the edge banding quality, maintenance frequency, and service life of the equipment. Traditional edge banding machines commonly suffer from two major technical problems during long-term operation: glue leakage and glue curing. These problems are particularly pronounced when using high-performance adhesives such as PUR (moisture-curing reactive polyurethane hot melt adhesive), because PUR adhesive undergoes an irreversible curing reaction upon contact with water molecules in the air, causing the coating shaft to become clogged with the cured adhesive, making it difficult to rotate and severely impacting production efficiency.

[0003] In existing technologies, the glue pot of an edge banding machine typically consists of a glue pot body, a glue-applying spindle, a heating element, and simple sealing components. During high-speed rotation of the glue-applying spindle, due to centrifugal force and the fluidity of the glue, the molten hot melt glue can seep upwards along the gaps in the shaft, infiltrating core transmission components such as bearing seats. This phenomenon leads to a series of chain problems: on the one hand, the glue solidifies, causing mechanical failures such as bearing seizure and shaft wear; on the other hand, cleaning the solidified glue requires a significant amount of time and manpower and can easily damage precision components. For example, in traditional structures, the glue-applying spindle often adopts an integrated design, and the gap between the spindle and the connecting shaft lacks an effective sealing barrier, becoming a major channel for glue leakage.

[0004] To address these issues, the industry has proposed various improvement solutions, but with limited effectiveness. A common approach is to increase the number of sealing rings or use high-temperature resistant sealing materials, such as PTFE seals. This approach delays adhesive leakage to some extent but does not fundamentally change the flow path and dynamic characteristics of the adhesive. Another approach is to improve the structural design, such as changing the integrated dispensing spindle to a split structure and adding bosses or barriers at the joints to block the adhesive. However, this design is often complex to manufacture and only provides single-level protection; leakage may still occur under long-term high-temperature and high-pressure environments. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-sealing glue pot mechanism for an edge banding machine. Through a high-sealing structural design based on fluid mechanics principles, multiple glue-proof barriers are formed, effectively preventing glue leakage, extending service life, and reducing maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-sealing glue pot mechanism for an edge banding machine, comprising: a glue-flowing guide base, a glue shaft rotatably disposed on the glue-flowing guide base and used for applying glue to the material, and a sealing ring assembly and a bearing seat assembly disposed between the glue shaft and the glue-flowing guide base, wherein the glue shaft connected to the glue-flowing guide base is provided with a high-sealing structure. The high-sealing structure includes a copper sleeve. The end face of the copper sleeve, which contacts the smooth surface of the upper end of the rubber shaft, is beveled. The inner wall of the copper sleeve has multiple spiral grooves, with the spiral direction of the multiple spiral grooves opposite to the rotation direction of the rubber shaft. When the rubber shaft rotates clockwise, the glue column generated by the glue flows upward. The smooth surface of the upper end of the rotating rubber shaft and the beveled edge form a reverse resistance, thus forming the first layer of glue-proof structure. When the glue continues to flow upward, the resistance of the reverse multi-layer spiral grooves on the inner wall of the copper sleeve prevents the glue from continuing to flow upward, thus forming the second layer of glue-proof structure. This prevents the glue from flowing into the sealing ring assembly and the bearing seat assembly, thereby achieving high sealing performance.

[0007] Furthermore, the bearing housing assembly includes a bushing disposed inside the copper sleeve and rotatably connected to the rubber shaft, and two bearings disposed at the end of the rubber shaft. An oil seal fixed on the copper sleeve is provided between the bearings and the bushing. The upper end of the oil seal is provided with a baffle plate that extends toward the bushing and slopes downward to form a third anti-adhesive structure.

[0008] Furthermore, the bottom circumferential surface of the bushing is set as an inclined surface with the same inclination as the inclined side.

[0009] Furthermore, the circumferential surface of the copper sleeve has two limiting grooves, and the sealing ring assembly is located in the two limiting grooves; the top circumferential surface of the copper sleeve is formed with a radially extending convex edge, and the bottom of the convex edge is symmetrically provided with a planar notch.

[0010] Furthermore, the adhesive shaft is hollow, and a heating rod that does not rotate with the adhesive shaft is provided in the hollow area. The heating rod is fixed to the adhesive flow guide base.

[0011] Furthermore, the protruding edge is provided with a stepped hole coaxial with the copper sleeve, and the oil seal is installed on the stepped hole.

[0012] The beneficial effects of this utility model are as follows: Based on the principles of fluid mechanics, by setting a double resistance design of bevel and reverse spiral groove in the copper sleeve, when the glue shaft rotates clockwise, the glue column generated by the glue flows upward. The smooth surface at the upper end of the rotating glue shaft and the bevel form a reverse resistance to form the first layer of glue-proof structure. When the glue continues to flow upward, the resistance of the reverse multi-layer spiral groove on the inner wall of the copper sleeve blocks the glue from continuing to flow upward to form the second layer of glue-proof structure. This effectively suppresses the upward flow of glue. The multiple layers of glue-proof structure protect core components such as the sealing ring assembly and bearing seat assembly, prevent glue from leaking into the sealing ring and bearing areas, reduce wear and corrosion, and extend the overall life of the mechanism. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is an exploded view of the high-sealing structure and bearing housing assembly in this utility model. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a high-sealing glue pot mechanism for an edge banding machine, which includes a glue flow guide base 10, a glue shaft 20, a sealing ring assembly 30, and a bearing seat assembly 40. The two ends of the glue shaft 20 are rotatably mounted on the glue flow guide base 10 through the bearing seat assembly 40. The sealing ring assembly 30 consists of two sealing rings and is located at the connection between the glue shaft 20 and the glue flow guide base 10.

[0016] The adhesive shaft 20, connected to the adhesive delivery base 10, is equipped with a high-sealing structure 21. This high-sealing structure 21 includes a copper sleeve 210. Two limiting grooves 2101 are formed on the circumferential surface of the copper sleeve 210, and the sealing ring assembly 30 is disposed within the two limiting grooves 2101. A radially extending protruding edge 2102 is formed on the top circumferential surface of the copper sleeve 210, and the protruding edge 2102 has a stepped hole 2103 coaxial with the copper sleeve 210. Symmetrical planar notches 2104 are provided at the bottom of the protruding edge 2102. The protruding edge 2102 facilitates the installation of the copper sleeve 210 onto the mounting hole of the adhesive delivery base 10 and avoids… The entire copper sleeve 210 is inserted into the mounting hole, and a flat notch 2104 is provided to facilitate the removal of the copper sleeve 210. The end face of the copper sleeve 210 that contacts the smooth surface of the upper end of the rubber shaft 20 is set as a bevel 2105, and the smooth surface of the upper end of the rubber shaft 20 is also set as a bevel that matches the bevel 2105, so that the bevel and the bevel 2105 are in contact. When the rubber shaft 20 rotates clockwise, the glue column generated by the glue flows upward. Since the copper sleeve 210 is stationary, the bevel of the rotating rubber shaft 20 and the bevel 2105 form a reverse resistance, so as to form the first glue-proof structure, effectively preventing the upward flowing glue from flowing into the interior of the copper sleeve 210.

[0017] Furthermore, the inner wall of the copper sleeve 210 is provided with multiple spiral grooves 2106. The spiral direction of the multiple spiral grooves 2106 is opposite to the rotation direction of the adhesive shaft 20. By resisting the resistance of the multiple spiral grooves 2106 on the inner wall of the copper sleeve 210, a second anti-adhesive structure is formed. When adhesive continues to flow upward through the first anti-adhesive structure, the adhesive is blocked by the multiple spiral grooves 2106. Under the reverse action, the adhesive stays in the spiral grooves 2106, which can further intercept the adhesive. At the same time, the design of the multiple spiral grooves 2106 can also increase the contact area between the inner wall of the copper sleeve 210 and the adhesive, so that the adhesive is subjected to greater friction during the flow process, further slowing down the flow speed of the adhesive. Moreover, since the multi-layer spiral grooves 2106 are arranged in a reverse spiral, even if a small amount of glue breaks through the first anti-glue structure, it is difficult for it to continue flowing upward along the direction of the spiral grooves 2106. This greatly enhances the sealing performance of the entire glue pot mechanism, effectively avoids the impact of glue leakage on the normal operation of the edge banding machine, and improves the working stability and edge banding quality of the edge banding machine.

[0018] In this embodiment, the bearing housing assembly 40 includes a bushing 41 disposed inside the copper sleeve 210 and rotatably connected to the glue shaft 20, and two bearings 42 disposed at the end of the glue shaft 20. The bottom circumferential surface of the bushing 41 is set as an inclined surface with the same inclination as the inclined side 2105. An oil seal 43 fixed on the stepped hole 2103 is provided between the bearings 42 and the bushing 41. The upper end of the oil seal 43 is provided with a baffle plate 44 extending towards the bushing 41 and inclined downward to form a third anti-glue structure. By providing a baffle plate 44 extending towards the bushing 41 and inclined downward to form a third anti-glue structure at the upper end of the oil seal 43, the presence of the baffle plate 44 further enhances the anti-glue effect. When glue attempts to flow upward into the bearing 42, the baffle plate 44 will block it and make it flow downward back into the glue pot along the baffle plate 44, avoiding damage to the bearing 42 by the glue, thereby improving the sealing and reliability of the entire glue pot mechanism and ensuring the stable operation of the edge banding machine.

[0019] In an optional embodiment, the glue shaft 20 is hollow, and a heating rod 21 that does not rotate with the glue shaft 20 is provided in the hollow area. The heating rod 21 is fixed to the glue flow guide base 10. The heating rod 21 heats the glue shaft 20, causing the glue solidified in the copper sleeve 210 to be melted. This design ensures that the glue is always in a suitable flow state, avoiding problems such as the glue shaft 20 not rotating smoothly or getting stuck due to glue solidification, thereby ensuring the continuous and stable operation of the edge banding machine. At the same time, the heating rod 21 does not rotate with the glue shaft 20, reducing wear and energy consumption caused by rotation, and improving the service life and energy efficiency of the entire glue pot mechanism.

[0020] In summary, the high-sealing glue pot mechanism of this edge banding machine, through its unique high-sealing structure 21 design, combined with a multi-layered anti-glue structure and the rational configuration of the heating rod 21, achieves effective control and sealing of the glue, significantly improving the working stability and edge banding quality of the machine. Its innovation lies in the special contact surface design between the copper sleeve 210 and the glue shaft 20, forming the first and second anti-glue barriers, effectively preventing the glue from flowing upwards; simultaneously, the glue-blocking plate 44 on the oil seal 43 constitutes a third anti-glue structure, further enhancing the anti-glue effect. Furthermore, the fixed heating rod 21 installed inside the hollow glue shaft 20 not only solves the glue curing problem but also reduces energy consumption and component wear, extends equipment lifespan, and lowers maintenance costs.

[0021] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A high-sealing glue pot mechanism for an edge banding machine, characterized in that, Includes: a glue-dispensing base, a glue shaft rotatably disposed on the glue-dispensing base for applying glue to materials, and a sealing ring assembly and a bearing housing assembly disposed between the glue shaft and the glue-dispensing base. The glue shaft connected to the glue-dispensing base has a high-sealing structure. The high-sealing structure includes a copper sleeve. The end face of the copper sleeve, which contacts the smooth surface of the upper end of the rubber shaft, is beveled. The inner wall of the copper sleeve has multiple spiral grooves, with the spiral direction of the multiple spiral grooves opposite to the rotation direction of the rubber shaft. When the rubber shaft rotates clockwise, the glue column generated by the glue flows upward. The smooth surface of the upper end of the rotating rubber shaft and the beveled edge form a reverse resistance, thus forming the first layer of glue-proof structure. When the glue continues to flow upward, the resistance of the reverse multi-layer spiral grooves on the inner wall of the copper sleeve prevents the glue from continuing to flow upward, thus forming the second layer of glue-proof structure. This prevents the glue from flowing into the sealing ring assembly and the bearing seat assembly, thereby achieving high sealing performance.

2. The high-sealing glue pot mechanism of the edge banding machine according to claim 1, characterized in that, The bearing housing assembly includes a bushing located inside a copper sleeve and rotatably connected to a rubber shaft, and two bearings located at the end of the rubber shaft. An oil seal fixed to the copper sleeve is provided between the bearings and the bushing. A baffle plate extending towards the bushing and tilting downwards to form a third anti-adhesive structure is provided at the upper end of the oil seal.

3. The high-sealing glue pot mechanism of the edge banding machine according to claim 2, characterized in that, The bottom circumferential surface of the bushing is set as an inclined surface with the same inclination as the hypotenuse.

4. The high-sealing glue pot mechanism of the edge banding machine according to claim 3, characterized in that, The circumferential surface of the copper sleeve has two limiting grooves, and the sealing ring assembly is located in the two limiting grooves; the top circumferential surface of the copper sleeve is formed with a radially extending convex edge, and the bottom of the convex edge is symmetrically provided with a planar notch.

5. The high-sealing glue pot mechanism of the edge banding machine according to claim 1, characterized in that, The adhesive shaft is hollow, and a heating rod that does not rotate with the adhesive shaft is installed in the hollow area. The heating rod is fixed to the adhesive guide base.

6. The high-sealing glue pot mechanism of the edge banding machine according to claim 4, characterized in that, The protruding edge has a stepped hole coaxial with the copper sleeve, and the oil seal is installed on the stepped hole.

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