A plate edge sealing strip and a laser edge sealing process

Abstract

The application discloses a kind of plate edge strip and laser edge sealing process, including substrate layer, a layer of transparent layer stacked on one side of substrate layer and a layer of hot melt adhesive layer stacked on the side of transparent layer away from substrate layer;The first recess is opened along the length direction of the substrate layer;The first recess is uniformly distributed with light splitting unit along the length direction in reverse;In the process of sticking, the laser beam is projected onto the hot melt adhesive layer by the light splitting unit, so that the hot melt adhesive layer is heated, the heating process and the sticking process are synchronized, and the hot melt adhesive layer is in a closed state during the heating process, thereby reducing heat loss, ensuring the heating effect while reducing the laser irradiation power, thereby achieving the effect of reducing energy consumption.

Description

Technical Field

[0001] This invention relates to the field of edge banding technology, and in particular to an edge banding strip for sheet metal and a laser edge banding process. Background Technology

[0002] Existing laser edge banding strips all have a hot melt adhesive layer attached to one side of the edge banding strip. During application, an external laser beam is projected onto the hot melt adhesive layer of the edge banding strip to heat the hot melt adhesive, causing it to melt and become sticky.

[0003] This method of external laser irradiation is limited by the laser irradiation angle. The laser irradiation melting process of hot melt adhesive and the application process of edge sealing strip are carried out independently. Since there is a certain time difference between the melting of hot melt adhesive and the completion of application, and the hot melt adhesive is in an open state during the melting process, a large amount of heat is lost. Therefore, in order to ensure the heating effect of hot melt adhesive, the laser irradiation power needs to be greater, resulting in high energy consumption. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a sheet metal edge banding strip and laser edge banding process that can reduce laser irradiation power while ensuring heating effect, thereby achieving the effect of reducing energy consumption.

[0005] To achieve the above objectives, the specific solution of the present invention is as follows: The first aspect of the present invention provides a sheet metal edge banding strip, comprising a substrate layer, a transparent layer stacked on one side of the substrate layer, and a hot melt adhesive layer stacked on the side of the transparent layer opposite to the substrate layer. The substrate layer has a first groove along its length; beam-splitting units are evenly distributed in the first groove along its length in opposite directions.

[0006] In a further embodiment of the present invention, the beam splitting unit includes a beam splitting bracket, a beam splitter rotatably disposed on the beam splitting bracket, and a first permanent magnet slidably disposed on the beam splitting bracket; the beam splitter is provided with a reflective layer; the first permanent magnet is drivenly connected to the beam splitter to drive the beam splitter to rotate.

[0007] Furthermore, the present invention includes a rotating shaft at both ends of the beam splitter; the rotating shaft is rotatably connected to the beam splitter support; a second groove is provided at both ends of the beam splitter support corresponding to the position of the rotating shaft; a vortex-shaped surface centered on the rotating shaft is provided on the side of the second groove away from the rotating shaft; a spring is provided in the second groove; one end of the spring is fixedly connected to the rotating shaft; a locking part is provided at one end of the spring that abuts against the vortex-shaped surface; a locking groove is provided at the small diameter end of the vortex-shaped surface.

[0008] Furthermore, in this invention, both ends of the beam splitter are provided with eccentric shafts; both ends of the first permanent magnet are provided with hinge shafts; and connecting rods are hinged between the hinge shafts and the corresponding eccentric shafts.

[0009] Furthermore, in this invention, the beam splitter is a prism structure made of transparent material; one of the prism surfaces of the beam splitter is a convex structure, and the reflective layer is coated on the convex structure.

[0010] In a further embodiment of the present invention, the beam splitter is provided with a sliding hole, and the first permanent magnet is slidably installed in the sliding hole.

[0011] A second aspect of the present invention provides a laser edge banding process, comprising a pressing device, a laser generating device, and a sheet metal edge banding strip as described above; the pressing device includes a second permanent magnet; the polarity of the second permanent magnet is opposite to that of the first permanent magnet; The process includes the following steps: Insert the edge banding strip of the board into the pressing device and adhere the hot melt adhesive layer to the bonding surface of the outer board; connect the laser generator to one end of the edge banding strip; the reflective layer faces the laser generator; The laser beam generated by the laser generator is projected onto the reflective layer of the beam splitter, and after being reflected by the reflective layer, it is projected onto the hot melt adhesive layer. The pressing device is moved along the outer plate, and the first permanent magnet slides due to the attraction of the second permanent magnet, which in turn causes the beam splitter to flip. When the second permanent magnet is directly opposite the first permanent magnet, the reflective layer is completely facing the hot melt adhesive layer.

[0012] Furthermore, the pressing device further includes a pressing base and a feeding roller rotatably disposed within the pressing base; The second permanent magnet is disposed in the pressure seat, and the pressure seat is provided with a material through hole at the position of the corresponding feeding roller away from the second permanent magnet; the pressure seat is provided with a pressure plate below the inclined surface of the second permanent magnet.

[0013] In a further embodiment of the present invention, the bottom surface of the second permanent magnet is an inclined surface; the distance between the end of the bottom surface of the second permanent magnet near the material hole and the pressure plate is greater than the distance between the end of the bottom surface of the second permanent magnet away from the material hole and the pressure plate.

[0014] The beneficial effects of the present invention are as follows: During the bonding process, the laser beam injected into the sealing strip is projected onto the hot melt adhesive layer through the beam splitting unit, thereby heating the hot melt adhesive layer. The heating process and the bonding process are carried out simultaneously, and the hot melt adhesive layer is in a closed state during the heating process, thereby reducing heat loss. While ensuring the heating effect, the laser irradiation power can be reduced, thereby achieving the effect of reducing energy consumption. Attached Figure Description

[0015] Figure 1 This is a perspective view of the edge banding strip of the sheet metal of the present invention; Figure 2 This is an exploded view of the edge banding strip for the sheet metal of the present invention; Figure 3 This is a schematic diagram of the structure of the beam-splitting unit of the present invention; Figure 4 This is an exploded schematic diagram of the beam-splitting unit of the present invention; Figure 5 This is a schematic diagram of the structure of the beam splitting unit of the present invention when the locking part and the locking groove are engaged; Figure 6 This is a schematic diagram of the structure of the beam splitting unit of the present invention after the beam splitting support is hidden; Figure 7 This is a flowchart of the laser edge sealing process of the present invention; Figure 8 This is a schematic diagram illustrating the use of the laser edge sealing process of this invention; Figure 9 This is a schematic diagram of the pressing device of the present invention; Figure 10 This is a cross-sectional schematic diagram of the pressing device of the present invention; Explanation of reference numerals in the attached drawings: 11, substrate layer; 111, first groove; 12, transparent layer; 13, hot melt adhesive layer; 14, beam splitting unit; 141, beam splitting bracket; 1411, second groove; 1412, vortex surface; 1413, locking groove; 1414, sliding hole; 142, beam splitter; 1421, rotating shaft; 1422, eccentric shaft; 143, first permanent magnet; 1431, hinge shaft; 144, reflective layer; 145, spring; 1451, locking part; 146, connecting rod; 21, pressure seat; 211, material through hole; 22, feeding roller; 23, second permanent magnet; 24, pressure plate; 3, laser generating device. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not to limit the scope of the invention to this.

[0017] like Figures 1 to 6 As shown, the edge banding strip for a board in this embodiment includes a substrate layer 11; a first groove 111 is formed on one side of the substrate layer 11 along its length; beam splitting units 14 are evenly distributed in the first groove 111 along its length; the first groove 111 is provided to facilitate the installation of the beam splitting units 14; a transparent layer 12 is stacked on one side of the substrate layer 11; the transparent layer 12 covers the opening of the first groove 111, thereby covering the beam splitting units 14; a hot melt adhesive layer 13 is stacked on the side of the transparent layer 12 facing away from the substrate layer 11.

[0018] In this embodiment, multiple beam-splitting units 14 are set inside the edge sealing strip. During bonding, the beam-splitting units 14 project the laser beam that enters the edge sealing strip onto the hot melt adhesive layer 13, thereby heating the hot melt adhesive layer 13. The heating process and the bonding process are carried out simultaneously. During the heating process, the hot melt adhesive layer 13 is in a closed state, thereby reducing heat loss. While ensuring the heating effect, the laser irradiation power can be reduced, thereby achieving the effect of reducing energy consumption.

[0019] like Figures 3 to 6 As shown in this embodiment, in some embodiments, the beam splitting unit 14 of the edge banding strip of the sheet metal includes a U-shaped beam splitting bracket 141, a beam splitter 142 rotatably mounted on the beam splitting bracket 141, and a first permanent magnet 143 slidably mounted on the beam splitting bracket 141; the beam splitter 142 is provided with a reflective layer 144; the first permanent magnet 143 is connected to the beam splitter 142 in a transmission connection to drive the beam splitter 142 to rotate.

[0020] Specifically, initially, the reflective layer 144 faces the direction of the laser beam projection. When the laser beam irradiates the edge sealing strip, the reflective layer 144 reflects the laser beam and projects it through the transparent layer 12 onto the hot melt adhesive layer 13, thereby heating the hot melt adhesive layer 13. When the first permanent magnet 143 is driven to slide relative to the beam splitter 141, the first permanent magnet 143 drives the beam splitter 142 to flip, thereby changing the reflection angle of the reflective layer 144. This causes the light spot projected onto the hot melt adhesive layer 13 to move along the hot melt adhesive layer 13, heating the hot melt adhesive layer 13. After the hot melt adhesive melts, it bonds and fixes the edge sealing strip to the surface to be bonded. This continues until the beam splitter 142 drives the reflective layer 144 to flip so that the reflective layer 144 is completely facing the hot melt adhesive layer 13. Then, the laser beam penetrates the beam splitter 142 and projects onto the reflective layer 144 of the next beam splitter unit 14, thereby heating the next section of the hot melt adhesive layer 13. This process continues until the edge sealing strip is bonded.

[0021] like Figures 3 to 6 As shown, in this embodiment, the beam splitter 142 is a four-prism structure made of transparent material; one of the prism surfaces of the beam splitter 142 is a convex structure, and a reflective layer 144 is coated on the convex structure; by setting the convex surface, the spot of the laser beam projected onto the hot melt adhesive layer 13 is larger, thereby heating the hot melt adhesive layer 13 more uniformly.

[0022] For example, such as Figures 3 to 6 As shown, the beam splitter 141 has a sliding hole 1414 through it, and the first permanent magnet 143 is slidably installed in the sliding hole 1414 so that the first permanent magnet 143 can be fully subjected to the magnetic field and drive the beam splitter 142 to rotate.

[0023] like Figures 3 to 6As shown in this embodiment, in some embodiments, the beam splitter 142 has rotating shafts 1421 at both ends; the rotating shafts 1421 are rotatably connected to the beam splitter bracket 141; the beam splitter bracket 141 has second grooves 1411 at both ends corresponding to the positions of the rotating shafts 1421; the side of the second groove 1411 away from the rotating shafts 1421 has a vortex surface 1412 centered on the rotating shafts 1421; the second groove 1411 has a spring piece 145; by setting the second groove 1411, space is provided for the spring piece 145 to move; one end of the spring piece 145 is fixedly connected to the rotating shafts 1421; one end of the spring piece 145 has a locking part 1451 that abuts against the vortex surface 1412; the small diameter end of the vortex surface 1412 has a locking groove 1413; the locking groove 1413 is used to lock the spring piece 145. The smaller diameter end of the vortex surface 1412 is the end of the vortex surface 1412 that is closer to the rotation axis 1421, and the larger diameter end of the vortex surface 1412 is the end of the vortex surface 1412 that is farther from the rotation axis 1421.

[0024] Specifically, when the first permanent magnet 143 slides, it drives the beam splitter 142 to rotate. The rotating shaft 1421 of the beam splitter 142 drives the spring piece 145 to swing within the second groove 1411. The locking part 1451 of the spring piece 145 moves from the large-diameter end of the vortex surface 1412 to the small-diameter end of the vortex surface 1412, thereby causing the light spot projected onto the hot melt adhesive layer 13 to move along the hot melt adhesive layer 13, so as to perform... Sufficient heating improves the bonding effect; when the locking part 1451 is inserted into the locking groove 1413, the locking groove 1413 and the locking part 1451 cooperate to lock the spring piece 145, locking the beam splitter 142 and the beam splitter bracket 141 into a whole. At this time, the beam splitter 142 is flipped into place, and the reflective layer 144 is completely facing the hot melt adhesive layer 13. After the laser beam penetrates the beam splitter 142, it irradiates the beam splitter 142 of the next beam splitter unit 14.

[0025] like Figure 4 and Figure 6 As shown in this embodiment, in some embodiments, the beam splitter 142 has an eccentric shaft 1422 at both ends; the first permanent magnet 143 has a hinge shaft 1431 at both ends; and a connecting rod 146 is hinged between the hinge shaft 1431 and the corresponding eccentric shaft 1422.

[0026] Specifically, when the first permanent magnet 143 slides, the first permanent magnet 143 drives the beam splitter 142 to rotate around the pivot 1421 via the connecting rod 146, thereby automatically adjusting the reflection angle of the reflective layer 144 and thus adjusting the position of the light spot.

[0027] like Figures 1 to 10As shown, this embodiment also provides a laser edge banding process, including a pressing device, a laser generating device 3, and a sheet metal edge banding strip as described above; the pressing device includes a second permanent magnet 23; the polarity of the second permanent magnet 23 is opposite to that of the first permanent magnet 143; The process specifically includes the following steps: Step S1: Insert the edge banding strip of the board onto the pressing device and adhere the hot melt adhesive layer 13 to the bonding surface of the outer board; connect the laser generator 3 to one end of the edge banding strip of the board; the reflective layer 144 of each beam splitting unit 14 faces the laser generator 3; thus completing the preparation work for the bonding of the edge banding strip. Step S2: The laser beam generated by the laser generator 3 is projected onto the reflective layer 144 of the beam splitting unit 14, and after being reflected by the reflective layer 144, it is projected onto the hot melt adhesive layer 13; thereby heating the hot melt adhesive layer 13 so that the hot melt adhesive melts and then bonds and fixes the edge sealing strip to the surface to be bonded. Step S3: Move the pressing device along the outer sheet material. The first permanent magnet 143 slides due to the attraction of the second permanent magnet 23 and drives the beam splitter 142 to flip. Specifically, move the pressing device along the length of the bonding surface of the outer sheet material. During the movement, the first permanent magnet 143 slides relative to the beam splitter 141 due to the magnetic attraction of the second permanent magnet 23. The first permanent magnet 143 drives the beam splitter 142 to flip, which changes the reflection angle of the reflective layer 144. This adjusts the position of the laser beam projected onto the hot melt adhesive layer 13, so that the laser beam moves with the pressing device, thereby heating the hot melt adhesive layer 13. After the hot melt adhesive melts, it bonds and fixes the edge banding strip to the bonding surface. Step S4: When the second permanent magnet 23 is facing the first permanent magnet 143, the reflective layer 144 is completely facing the hot melt adhesive layer 13. Specifically, as the pressing device moves the second permanent magnet 23, when the second permanent magnet 23 is facing the first permanent magnet 143, the beam splitter 142 is brought to the reflective layer 144 and flipped so that the reflective layer 144 is completely facing the hot melt adhesive layer 13. At this time, the locking part 1451 of the spring piece 145 is inserted into the locking groove 1413, locking the beam splitter 142 and the beam splitter bracket 141 into a whole. At this time, the light-transmitting surface of the beam splitter 142 is facing the laser beam, so that the laser beam can be projected onto the next beam splitter unit 14 through the beam splitter 142.

[0028] In this embodiment, a second permanent magnet 23 with the opposite polarity to the first permanent magnet 143 is provided on the pressing device. During the pressing process of the pressing device pressing the edge sealing strip, the second permanent magnet 23 drives the beam splitting unit 14 to change its state. This allows the laser beam to heat the hot melt adhesive layer 13 from inside the edge sealing strip under the action of the beam splitting unit 14. The heating process and the bonding process are carried out simultaneously. During the heating process, the hot melt adhesive layer 13 is in a closed state, thereby reducing heat loss caused by the open environment under external irradiation. This can reduce the laser irradiation power while ensuring the heating effect, thereby achieving the effect of reducing energy consumption.

[0029] like Figure 9 and Figure 10 As shown in the embodiment, in a laser edge sealing process, the pressing device further includes an inverted U-shaped pressing base 21 and a feeding roller 22 rotatably installed in the pressing base 21; the second permanent magnet 23 is disposed in the pressing base 21, and the pressing base 21 is provided with a material through hole 211 at a position corresponding to the feeding roller 22 away from the second permanent magnet 23; the pressing base 21 is provided with a pressing plate 24 below the inclined surface of the second permanent magnet 23.

[0030] In actual use, the edge banding strip of the board can be inserted into the pressure seat 21 and wrapped around the outer circumference of the feeding roller 22, and then passed out through the insertion hole 211. By setting the feeding roller 22, the edge banding strip of the board can be conveyed to make the edge banding strip of the board adhere to the bonding surface of the outer board. The pressure plate 24 allows the magnetic field lines generated by the first permanent magnet 143 and the second permanent magnet 23 to pass through, thereby squeezing the edge banding strip of the board through the pressure plate 24, so that the edge banding strip of the board is firmly bonded to the bonding surface of the outer board.

[0031] like Figure 10 As shown in the embodiment, in the laser edge sealing process, the bottom surface of the second permanent magnet 23 is further inclined; the distance between the end of the bottom surface of the second permanent magnet 23 near the material hole 211 and the pressure plate 24 is greater than the distance between the end of the bottom surface of the second permanent magnet 23 away from the material hole 211 and the pressure plate 24. With this configuration, as the pressing device moves, the distance between the bottom surface of the second permanent magnet 23 and the corresponding first permanent magnet 143 gradually decreases, causing the magnetic attraction force of the second permanent magnet 23 on the first permanent magnet 143 to gradually increase. This, in turn, causes the flip angle of the beam splitter 142 to gradually increase, thereby achieving the purpose of adjusting the reflection angle of the reflective layer 144.

[0032] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included within the protection scope of this patent application.

Claims

1. A type of edge banding strip for sheet metal, characterized in that, It includes a substrate layer, a transparent layer stacked on one side of the substrate layer, and a hot melt adhesive layer stacked on the side of the transparent layer facing away from the substrate layer; The substrate layer has a first groove along its length; beam-splitting units are evenly distributed in the first groove along its length in opposite directions. The beam splitting unit includes a beam splitting bracket, a beam splitter rotatably mounted on the beam splitting bracket, and a first permanent magnet slidably mounted on the beam splitting bracket; the beam splitter is provided with a reflective layer; the first permanent magnet is connected to the beam splitter in a transmission manner to drive the beam splitter to rotate. The beam splitter is a four-prism structure made of transparent material; one of the prism surfaces of the beam splitter is a convex structure, and the reflective layer is coated on the convex structure.

2. The edge banding strip for sheet metal according to claim 1, characterized in that, The beam splitter has rotating shafts at both ends; the rotating shafts are rotatably connected to the beam splitter support; the beam splitter support has second grooves at both ends corresponding to the positions of the rotating shafts; the side of the second groove away from the rotating shaft has a vortex-shaped surface centered on the rotating shaft; the second groove has a spring piece; one end of the spring piece is fixedly connected to the rotating shaft; one end of the spring piece has a locking part that abuts against the vortex-shaped surface; the small-diameter end of the vortex-shaped surface has a locking groove.

3. The edge banding strip for sheet metal according to claim 2, characterized in that, Both ends of the beam splitter are eccentrically mounted with eccentric shafts; both ends of the first permanent magnet are hinged with hinge shafts; and connecting rods are hinged between the hinge shafts and the corresponding eccentric shafts.

4. The edge banding strip for sheet metal according to claim 1, characterized in that, The beam splitter has a through-hole, and the first permanent magnet is slidably installed in the through-hole.

5. A laser edge-sealing process, characterized in that, The device includes a pressing device, a laser generating device, and a sheet metal edge banding strip as described in any one of claims 1 to 4; the pressing device includes a second permanent magnet; the polarity of the second permanent magnet is opposite to that of the first permanent magnet; The process includes the following steps: Insert the edge banding strip of the board into the pressing device and adhere the hot melt adhesive layer to the bonding surface of the outer board; connect the laser generator to one end of the edge banding strip; the reflective layer faces the laser generator; The laser beam generated by the laser generator is projected onto the reflective layer of the beam splitter, and after being reflected by the reflective layer, it is projected onto the hot melt adhesive layer. The pressing device is moved along the outer plate, and the first permanent magnet slides due to the attraction of the second permanent magnet, which in turn causes the beam splitter to flip. When the second permanent magnet is directly opposite the first permanent magnet, the reflective layer is completely facing the hot melt adhesive layer.

6. The laser edge-sealing process according to claim 5, characterized in that, The pressing device also includes a pressing seat and a feeding roller rotatably disposed within the pressing seat; The second permanent magnet is disposed in the pressure seat, and the pressure seat is provided with a material through hole at the position of the corresponding feeding roller away from the second permanent magnet; the pressure seat is provided with a pressure plate below the inclined surface of the second permanent magnet.

7. The laser edge-sealing process according to claim 6, characterized in that, The bottom surface of the second permanent magnet is an inclined surface; the distance between the end of the bottom surface of the second permanent magnet near the material hole and the pressure plate is greater than the distance between the end of the bottom surface of the second permanent magnet away from the material hole and the pressure plate.

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