A hot air system based on edge band with glue coating layer and its edge banding device

Abstract

This utility model relates to the technical field of sheet metal processing equipment, and provides a hot air system and its sealing device based on an edge-sealing tape with an adhesive layer. The system includes an air supply structure; a heating structure including a spiral pipe component, wherein the air inlet end of the spiral pipe component is connected to the air outlet end of the air supply structure, and each of the air inlet and outlet ends of the spiral pipe component is provided with a set of electrical terminals; and a power supply structure, wherein the positive and negative connection ends of the power supply structure are respectively connected to the two sets of electrical terminals to form a heating path. This utility model heats the air supplied by the fan through the spiral pipe component, solving the technical problems of low heating efficiency and large temperature fluctuations in hot air output caused by the multi-chamber structure of existing hot air systems, resulting in poor melting of the adhesive layer.

Description

Technical Field

[0001] This invention relates to the field of edge banding equipment for sheet metal, and in particular to a hot air system based on edge banding tape with adhesive coating and its edge banding device. Background Technology

[0002] In the modern board processing industry, edge banding processes are mainly divided into three categories: First, the traditional process of applying hot melt adhesive to the back of the edge banding strip using a glue roller, which has problems such as uneven adhesive layer and high risk of glue overflow; second, the process of heating the pre-coated adhesive layer with a laser beam, which has significantly better edge banding quality than the glue roller process, but faces the problems of high equipment cost and high maintenance cost; and third, the process of using high-temperature airflow to melt the pre-coated adhesive layer of the edge banding strip, which has better edge banding effect than the glue roller process and is much cheaper than laser hot melt equipment.

[0003] Existing hot air systems, such as the one described in patent publication number CN117588849A, employ a multi-layered chamber heating structure to improve heating efficiency. This structure is complex, and the heating tubes experience localized temperature differences due to airflow collisions, leading to fluctuations in the output hot air temperature and resulting in poor output hot air stability. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide a hot air system and its sealing device based on a sealing tape with an adhesive layer, which solves the technical problems of low heating efficiency and large fluctuations in hot air output temperature caused by the multi-layer chamber structure of the existing hot air system, resulting in poor melting effect of the adhesive layer.

[0005] One of the objectives of this invention is achieved through the following technical solution:

[0006] A hot air system based on edge sealing tape with adhesive coating, including

[0007] Air supply structure;

[0008] The heating structure includes a spiral pipe component, wherein the air inlet end of the spiral pipe component is connected to the air outlet end of the air supply structure, and the air inlet end and the air outlet end of the spiral pipe component are respectively provided with a set of electrical terminals.

[0009] The power supply structure has positive and negative connection ends that are respectively connected to two sets of electrical connection terminals to form a heating path.

[0010] Based on the above technical solution, the present invention is further described as follows:

[0011] It also includes: a hot gas ejection structure, wherein the air inlet end of the hot gas ejection structure is connected to the air outlet end of the spiral pipe, and the air outlet end of the hot gas ejection structure is aligned with the adhesive layer of the sealing strip.

[0012] As a further embodiment of this invention, the heating structure further includes:

[0013] The insulated chamber contains a spiral pipe fitting, with the inlet and outlet ends of the spiral pipe fitting extending out of the insulated chamber.

[0014] As a further embodiment of this utility model, the hot gas ejection structure includes a hot gas nozzle body, the hot gas nozzle body includes a housing and an air outlet guide panel, the housing is provided with an air outlet opening, the air outlet guide panel is fixedly disposed at the air outlet opening, and multiple sets of air outlet holes are arrayed on the air outlet guide panel.

[0015] As a further embodiment of this utility model, the hot gas ejection structure also includes a lifting and adjusting device, which comprises:

[0016] A support bracket is fixedly mounted on the upper part of the housing, and the support bracket is provided with bolt holes;

[0017] The rotating screw is rotatably and vertically mounted on the support bracket through the bolt hole;

[0018] A sliding baffle component includes a baffle body, which is slidably disposed on the front side of the air outlet of the air outlet guide panel. A connecting boss is provided at the upper end of the baffle body. The sliding baffle component is connected to the movable end of the linear drive device.

[0019] As a further embodiment of this utility model, it also includes a control structure and a detection structure. The detection structure includes a temperature sensor and a wind speed sensor, both of which are disposed at the air outlet end of the spiral pipe component. The control structure is electrically connected to the air supply structure, the power supply structure, and the detection structure.

[0020] As a further embodiment of this utility model, the air inlet end and the air outlet end of the spiral pipe fitting are respectively provided with a vertical straight pipe and a horizontal straight pipe, and the two sets of electrical connection terminals are provided on the vertical straight pipe and the horizontal straight pipe.

[0021] The power supply structure also includes a copper busbar, which connects the power supply structure to the electrical terminals on the vertical and horizontal straight pipes via the copper busbar.

[0022] As a further embodiment of this invention, the linear drive device includes a rotating screw.

[0023] The linear drive device includes a rotating screw and a threaded assembly that rotates with the screw thread.

[0024] The support bracket is provided with a limiting rotating hole, the threaded assembly is rotatably disposed in the limiting rotating hole, and the threaded assembly and the limiting rotating hole are fixedly disposed relative to each other in the vertical direction;

[0025] The lower end of the rotating screw is fixedly connected to the connecting boss.

[0026] This utility model also provides an edge sealing device, including the aforementioned hot air system with adhesive-coated edge sealing tape and its edge sealing device.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] This invention utilizes an air supply structure to deliver air into a heating structure; simultaneously, a power supply structure provides power to the heating structure, which in turn heats the air flowing into it. The spiral structure of the spiral pipe component creates a spiral flow within the pipe, extending the heating path and significantly increasing the heat exchange area. This ensures stable heating of the airflow, achieving uniform and efficient heat conduction. A hot air ejection structure then sprays hot air onto the adhesive layer of the edge banding. A detection structure collects hot air temperature and velocity parameters in real time and feeds them back to the control structure. The control structure is electrically connected to the air supply, heating, and hot air ejection structures, enabling automated and precise control. This ensures uniform softening of the adhesive layer, improves edge banding adhesion strength, and effectively solves the problems of low heating efficiency and unstable hot air output in traditional edge banding processes. It has significant practical value and market competitiveness in furniture manufacturing, board processing, and other fields. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the hot air system of this utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the heating structure of this utility model. Figure 1 ;

[0031] Figure 3 This is a schematic diagram of the heating structure of this utility model. Figure 2 ;

[0032] Figure 4 This is a schematic diagram of the hot gas ejection structure of this utility model. Figure 1 ;

[0033] Figure 5 This is a schematic diagram of the hot gas ejection structure of this utility model. Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the main structure of the hot air nozzle of this utility model;

[0035] Figure 7 This is a schematic diagram showing the structural position of the blocking block within the housing of this utility model;

[0036] Figure 8 This is a schematic diagram of the overall structure of the edge-sealing device of this utility model;

[0037] Figure 9 This is a schematic diagram of the rotating screw and helical assembly structure of this utility model.

[0038] In the picture:

[0039] 1-Air supply structure, 11-Ventilation duct;

[0040] 2-Heating structure, 21-Spiral pipe fitting, 211-Inlet end, 212-Outlet end, 2111-Horizontal straight pipe, 2121-Vertical straight pipe, 22-Insulated chamber, 221-Insulated pipeline, 23-Electrical connection terminal, 24-Insulated interface, 25-Insulated adapter;

[0041] 3-Power supply structure, 31-Copper busbar;

[0042] 4-Hot gas ejection structure, 41-Hot gas nozzle body, 411-House, 4111-Nozzle inlet pipe, 4112-Outlet opening, 412-Outlet guide panel, 413-Ventilation groove, 414-Blocking block, 415-Connecting rod, 42-Lifting adjustment device, 421-Sliding baffle piece, 4211-Baffle body, 4212-Sliding limit plate, 4213-Connecting boss, 4214-Small diameter perforation, 4215-Limiting perforation, 422-Support bracket, 4221-Support rod, 4222-Fixed platform, 4223-Rotating hole, 423-Linear drive device, 4231-Rotating screw, 4232-Threaded fitting, 4233-Bolt cap, 4234-Shoulder, 4235-Fixing nut, 4236-Handle.

[0043] 5-Detection structure;

[0044] 6-Workbench. Detailed Implementation

[0045] Below, in conjunction with the appendix Figure 1 To be continued Figure 9 The present invention will be further described in detail below with specific implementation methods. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0046] A hot air system based on an adhesive-coated edge-sealing tape includes an air supply structure 1, a heating structure 2, a power supply structure 3, a hot air ejection structure 4, a detection structure 5, and a control structure. The air supply structure 1 delivers air into the heating structure 2; the power supply structure 3 supplies power to the heating structure 2, which in turn heats the air flowing into it. The spiral structure of the spiral pipe component 21 causes the airflow to form a spiral flow within the pipe, extending the heating path and significantly increasing the heat exchange area, thus completing the heating of the airflow. Stable heating ensures uniform and efficient heat transfer. Hot air is then sprayed onto the adhesive layer of the edge banding tape via the hot air ejection structure 4, melting the adhesive layer and completing the subsequent edge banding bonding. Simultaneously, the detection structure 5 collects hot air temperature and wind speed parameters in real time and feeds them back to the control structure, enabling automated and precise regulation. This ensures uniform softening of the adhesive layer, improves edge banding adhesion strength, and effectively solves the problems of low heating efficiency and unstable hot air output in traditional edge banding processes. It has significant practical value and market competitiveness in furniture manufacturing, board processing, and other fields.

[0047] For details, please refer to the appendix. Figure 1 The air supply structure 1 can be, but is not limited to, an air compressor and an air pump, and is connected to the heating structure 2 through a ventilation duct 11. This allows the air supply structure 1 to achieve air compression and delivery functions, improving the stability of airflow supply and pressure controllability, and ensuring that the heating structure 2 obtains a continuous and stable air source.

[0048] Please refer to Figure 2 and Figure 3The heating structure 2 includes a spiral pipe component 21 and an insulation chamber 22. The spiral pipe component 21 is a spiral-shaped copper pipe with an inlet end 211 and an outlet end 212 at its two ends. The inlet end 211 extends along the central axis of the spiral pipe component 21, and the outlet end 212 extends upward. This spiral structure significantly extends the internal flow channel length of the pipe compared to a traditional straight pipe, allowing the airflow to form a spiral flow trajectory after entering from the inlet end 211. This effectively increases the contact time and contact area of ​​the gas within the spiral pipe, ensuring the stability of gas heating. Simultaneously, the gas flows through a single channel and is not affected by other airflows. The inlet end 211 and outlet end 212 of the spiral pipe component 21 are respectively provided with a horizontal straight pipe 2111 and a vertical straight pipe 2121, and the outer surfaces of both the vertical straight pipe 2121 and the horizontal straight pipe 2111 are provided with... A set of electrical connection terminals 23 are provided. The positive and negative connection ends of the power supply structure 3 are respectively connected to the two sets of electrical connection terminals 23 one-to-one through copper busbars 31 to form a heating path. This is used to realize the low-resistance electrical connection function between the spiral pipe component 21 and the power supply structure 3 through the electrical connection terminals 23, which improves the power transmission efficiency and heating stability, reduces circuit loss and the risk of local overheating. An insulating interface 24 for connecting the ventilation duct 11 is provided at the port of the horizontal straight pipe 2111, and an insulating adapter 25 for connecting the hot air ejection structure 4 is provided at the port of the vertical pipe. The insulating interface 24 and the insulating adapter 25 realize the insulation and sealing function between the ventilation duct, the hot air ejection structure 4 and the spiral pipe component 21, which improves the electrical safety and airflow tightness of the system, avoids leakage accidents and heat loss caused by hot air leakage, and at the same time, the insulating adapter 25 provides installation space for the detection structure 5.

[0049] Please continue to refer to this. Figure 2 and Figure 3 The insulated chamber 22 is configured as a cylindrical sealed chamber adapted to the shape of the spiral pipe body. The spiral pipe component 21 is disposed inside the insulated chamber 22. The horizontal straight pipe 2111 of the air inlet end 211 and the vertical straight pipe 2121 of the air outlet end 212 of the spiral pipe component 21 both extend out of the insulated chamber 22. This serves to limit the spiral pipe component 21 and provide thermal insulation and sealing through the insulated chamber 22, thereby improving the heat utilization rate and temperature stability and reducing the heat loss rate. Simultaneously, the insulated chamber 22 is also provided with an insulated pipe 221, which is disposed on the outer side of the vertical straight pipe 2121. One end of the insulated pipe 221 is connected to the insulated chamber 22, and the other end is connected to the insulating adapter 25. This improves the temperature stability at the inlet of the hot air ejection structure 4 and prevents the hot air temperature from decreasing due to heat dissipation from the pipe.

[0050] Please refer to Figure 4 To be continued Figure 6 The hot air ejection structure 4 includes a hot air nozzle body 41 and a lifting adjustment device 42. The hot air nozzle body 41 includes a housing 411 and an air outlet guide panel 412. The housing 411 is rectangular and is vertically mounted on the upper side of the edge sealing machine workbench 6. The air inlet end 211 of the hot air ejection structure 4 is connected to the air outlet end 212 of the spiral pipe component 21. Specifically, the lower end of the housing 411 is provided with a nozzle air inlet pipe 4111 that communicates with the insulating adapter 25, so as to realize the airflow communication function between the hot air nozzle body 41 and the heating structure 2, thereby improving the smoothness and sealing of hot air transmission. The air outlet end 212 of the hot air ejection structure 4 is aligned with the adhesive layer of the sealing strip. Specifically, the side of the housing 411 facing the adhesive layer of the sealing strip is provided with an air outlet 4112. The outer edge of the air outlet 4112 is provided with a groove. The air outlet guide panel 412 matches the shape of the groove and is fixedly installed in the groove of the air outlet 4112 by bolts, thereby realizing the detachable installation function of the air outlet guide panel 412, improving the convenience of equipment maintenance, and facilitating the regular cleaning of adhesive residues and impurities in the air outlet. The air outlet guide panel 412 is provided with multiple sets of air outlets in an array to improve the uniformity and coverage of hot air jet.

[0051] Please continue to refer to the appendix. Figure 4 , 5 6 and appendix Figure 9The lifting adjustment device 42 includes a sliding baffle 421, a support bracket 422, and a linear drive device 423. The linear drive device 423 is mounted on the support bracket 422, and its movable end is connected to the sliding baffle 421. Specifically, the linear drive device 423 can be, but is not limited to, an electric telescopic rod and a ball screw. The linear drive device 423 includes a rotating screw 4231 and a threaded assembly 4232. The threaded assembly 4232 is rotatably mounted on the support bracket 422, which is fixedly mounted above the housing 411. The support bracket 422 has a rotating hole 4223 for the threaded assembly 4232 to rotate. The threaded assembly 4232 has an internal threaded hole, and the rotating screw 4231 rotates with the threaded assembly 4232 through the internal threaded hole. The outer side of the lower end of the threaded assembly 4232 has a shoulder 4234 that abuts against the lower side of the support bracket 422. The upper end of the assembly 4232 extends above the rotating hole 4223 and is provided with a fixing nut 4235. This nut, along with the shoulder 4234 and the fixing nut 4235, allows the threaded assembly 4232 to be fixed vertically relative to the support bracket 422. The upper end of the threaded assembly 4232 is also provided with a handle 4236, which allows the threaded assembly 4232 to be rotated to move the rotating screw 4231 vertically. Specifically, the sliding stop... The plate 421 includes a baffle body 4211, which is slidably disposed between the vent panel and the adhesive layer of the edge sealing strip, i.e., the front side of the vent hole of the vent panel. The left and right sides of the baffle body 4211 are provided with protruding sliding limiting plates 4212, forming a U-shaped groove between the two sliding limiting plates 4212 and the baffle body 4211. The inner sides of the sliding limiting plates 4212 are slidably disposed relative to the left and right sides of the housing 411, for sliding the limiting plates 4212 and the U-shaped groove. A grooved track enables the vertical sliding guidance of the baffle body 4211, improving the stability of its up-and-down movement. A connecting boss 4213 is provided at the upper end of the baffle body 4211, and this connecting boss 4213 is fixedly connected to the lower end of the rotating screw 4231. Specifically, the connecting boss 4213 has a small-diameter through hole 4214 for the lower end of the rotating screw 4231 to extend out. The lower end of the rotating screw 4231 has a small-diameter stepped shaft that passes through and engages with the small-diameter through hole 4214. A bolt cap 4233 is fixed to the lower end of the rotating screw 4231, with its upper side abutting against the lower side of the connecting boss 4213. The bolt cap 4233 and the small-diameter stepped shaft at the lower end of the rotating screw 4231 achieve a fixed connection with the rotating screw 4231 and the connecting boss 4213.By adjusting the height of the baffle body 4211, the height of the hot air ejected from the hot air ejection structure 4 can be controlled, improving the equipment's adaptability to sealing tapes of different widths and ensuring that the hot air is precisely applied to the adhesive layer.

[0052] Please refer to the attached document. Figure 7 The housing 411 has a ventilation groove 413, and a blocking block 414 is provided in the ventilation groove 413. The blocking block 414 is slidably disposed in the ventilation groove 413. The blocking block 414 is connected to the connecting boss 4213 through a connecting rod 415. The blocking block 414 moves in the ventilation groove 413 as the connecting boss 4213 rises and falls, so as to block hot air from entering above the blocking block 414, thereby achieving precise control of the hot air injection area and improving the controllability of the hot air output range.

[0053] Please refer to Figure 4 To be continued Figure 6 The support bracket 422 includes multiple support rods 4221 and a fixed platform 4222. In this embodiment, to improve the overall compactness of the device, the upper ends of the four support rods 4221 are fixedly connected to the lower ends of the fixed platform 4222. The lower ends of three longer support rods 4221 are fixedly mounted on the edge banding machine workbench 6. The middle part of one of the three longer support rods 4221 passes through the connecting boss 4213 of the sliding baffle. The lower end of a shorter support rod passes through the connecting boss 4213 and is fixedly mounted on the upper end of the housing 411. The connecting boss 4213 is provided with a limiting through hole 4215 for the shorter support rod 4221 to pass through, so that the support rod 4221 can support and fix the fixing strip. At the same time, while improving the overall compactness and reducing the space occupied, the shorter support rod 4221 can limit the sliding baffle 421 and prevent the sliding baffle 421 from shifting during the up and down sliding process.

[0054] Please refer to Figure 3 The detection structure 5 includes a temperature sensor and a wind speed sensor, both of which are installed in the insulating adapter 25 of the air outlet end 212 of the spiral pipe component 21. The lower side of the insulating adapter 25 is provided with an air inlet connected to the vertical straight pipe 2121. The middle part of the insulating adapter 25 is a hollow structure, and the upper side of the insulating adapter 25 is provided with an air outlet connected to the nozzle air inlet pipe. The temperature sensor and wind speed sensor are used to realize the real-time acquisition function of hot air temperature and flow rate parameters.

[0055] The control structure is electrically connected and controlled by the air supply structure 1, the power supply structure 3, and the detection structure 5. The electrical control structure includes a power supply module and a control module connected by a circuit. The control module can be, but is not limited to, a single-chip microcontroller control board of model AT80C51 or a microcontroller of model STM32. The output terminal of the relay is connected by a circuit to the air compressor of the air supply structure 1 and the power output control board in the power supply structure 3, respectively. The temperature sensor and wind speed sensor of the detection structure 5 are connected by a circuit to the signal input terminal of the control module. This is used to realize the start-stop and speed regulation of the air compressor in the air supply structure 1 and the output power of the power supply structure 3 through the control structure, and at the same time receive the hot air temperature and wind speed data fed back by the detection structure 5 in real time to complete the closed-loop automatic control of the hot air system operating parameters.

[0056] Please refer to Figure 8 The present invention also provides an edge sealing device, including the hot air system based on the edge sealing tape with adhesive layer mentioned above.

[0057] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection of the present invention.

Claims

1. A hot air system based on edge-sealing tape with adhesive coating, characterized in that, Air supply structure; The heating structure includes a spiral pipe component, wherein the air inlet end of the spiral pipe component is connected to the air outlet end of the air supply structure, and the air inlet end and the air outlet end of the spiral pipe component are respectively provided with a set of electrical terminals. The power supply structure has positive and negative connection ends that are respectively connected to two sets of electrical connection terminals to form a heating path.

2. The hot air system based on the edge-sealing tape with adhesive coating according to claim 1, characterized in that, Also includes: A hot gas ejection structure is provided, wherein the air inlet end of the hot gas ejection structure is connected to the air outlet end of the spiral pipe, and the air outlet end of the hot gas ejection structure is aligned with the adhesive layer of the sealing strip.

3. The hot air system based on the edge banding tape with a glue layer according to claim 1 or 2, characterized in that, The heating structure also includes: The insulated chamber contains a spiral pipe fitting, with the inlet and outlet ends of the spiral pipe fitting extending out of the insulated chamber.

4. The hot air system based on the edge tape with a glue layer according to claim 2, characterized in that, The hot gas ejection structure includes: The hot air nozzle body includes a housing and an air outlet guide panel. The housing is provided with an air outlet opening, and the air outlet guide panel is fixedly disposed at the air outlet opening. Multiple sets of air outlet holes are arranged in an array on the air outlet guide panel.

5. The hot air system based on the edge banding tape with a glue layer according to claim 4, characterized in that, The hot gas ejection structure further includes a lifting and adjusting device, which includes: A support bracket is fixedly mounted above the housing; A linear drive device, which is mounted on the support bracket. A sliding baffle component includes a baffle body, which is slidably disposed on the front side of the air outlet of the air outlet guide panel. A connecting boss is provided at the upper end of the baffle body. The sliding baffle component is connected to the movable end of the linear drive device.

6. The hot air system based on the edge tape with a glue layer according to claim 5, characterized in that, It also includes a control structure and a detection structure, wherein the control structure is electrically connected to the air supply structure, the heating structure and the detection structure.

7. The hot air system based on the edge-sealing tape with adhesive coating according to claim 3, characterized in that, The spiral pipe fitting has a vertical straight pipe and a horizontal straight pipe at its inlet and outlet ends, respectively, and two sets of electrical connection terminals are provided on the vertical straight pipe and the horizontal straight pipe. The power supply structure also includes a copper busbar, which connects the power supply structure to the electrical terminals on the vertical and horizontal straight pipes via the copper busbar.

8. The hot air system based on the edge-sealing tape with adhesive coating according to claim 5, characterized in that, The linear drive device includes a rotating screw and a threaded assembly that rotates with the screw thread. The support bracket is provided with a limiting rotating hole, the threaded assembly is rotatably disposed in the limiting rotating hole, and the threaded assembly and the limiting rotating hole are fixedly disposed relative to each other in the vertical direction; The lower end of the rotating screw and the connecting boss are fixedly positioned relative to each other in the vertical direction.

9. An edge sealing device characterized by Includes the hot air system and edge sealing device based on the edge sealing tape with adhesive layer as described in any one of claims 1-8.

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