Automatic edge sealing method and device for gypsum board

Abstract

The invention relates to the technical field of gypsum board edge banding, in particular to an automatic gypsum board edge banding method and device.The automatic gypsum board edge banding device comprises a tensioning tray and an edge banding belt arranged on the tensioning tray, and the edge banding belt is conveyed through at least three pairs of one-way conveying wheels, wetted through a water wetting structure and steered through a steering wheel in sequence and then abuts against the cutting edge of a gypsum board through a first extrusion wheel; and then adhering to the cutting edge of the gypsum board along with the movement of the gypsum board. The one-way conveying wheel, the water dipping structure, the steering wheel and the first extrusion wheel are all arranged on the mounting frame; the pair of one-way conveying wheels comprises a conveying wheel a and a conveying wheel b, and the conveying wheel a presses the edge sealing belt against the conveying wheel b through an elastic telescopic rod on the mounting frame; a second extrusion wheel is arranged between every two adjacent pairs of one-way conveying wheels, and at least two second extrusion wheels are arranged on the two sides of the edge sealing belt in a staggered mode so as to extrude the edge sealing belt from the two sides. According to the invention, the edge banding tape cannot be torn and broken due to sudden rewinding of the edge banding tape.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum board edge sealing, in particular to an automatic gypsum board edge sealing method and device. Background Art

[0002] After gypsum board is formed and cut, the cut edges need to be sealed. Edge sealing is not only for aesthetics, but more importantly, it enhances the durability and overall structural stability of the gypsum board. It also helps to resist water and moisture, extending the lifespan of the gypsum board.

[0003] The Chinese invention patent with announcement number CN113370398B discloses an automatic edge banding device for gypsum boards, including a frame and a V-shaped guide rail, a tensioning device and a positioning device are respectively installed at both ends of the guide rail, and a water-wetting device is installed at the bend of the guide rail. The tensioning device is sleeved with an edge banding strip, and the positioning device is installed with a cutting device for cutting the edge banding strip. The edge banding strip passes through the water-wetting device along the guide rail to be wetted and is then positioned on the gypsum board by the positioning device.

[0004] Although the above technical solution can connect multiple edge banding devices together through a track, which is helpful to prevent the edge banding from tilting during movement; by arranging the cutting device between the positioning roller and the pressing roller of the edge banding, the edge banding is positioned and cut to prevent the edge banding from warping due to premature cutting; but in actual use, there are still the following shortcomings: the current edge banding device relies on the rewinding action of the coil spring to prevent the edge banding from loosening, but because the rewinding action of the coil spring will generate a large pulling force on the edge banding at the moment the edge banding is tightened, this force can easily cause the edge banding itself to tear, break, etc., affecting the edge banding operation of the gypsum board. Summary of the Invention

[0005] The object of the present invention is to provide a method and device for automatic edge sealing of gypsum boards to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An automatic gypsum board edge-sealing device includes a tensioning tray and an edge-sealing strip disposed on the tensioning tray. The edge-sealing strip is sequentially conveyed by at least three pairs of one-way conveying wheels, wetted by a water-wetting structure, and turned by a steering wheel. The edge-sealing strip is then pressed against the cut edge of the gypsum board by a first extrusion wheel, and then adhered to the cut edge of the gypsum board as the gypsum board moves. The one-way conveying wheel, the water-wetting structure, the steering wheel and the first extrusion wheel are all arranged on the mounting frame; A pair of one-way conveying wheels includes a conveying wheel a and a conveying wheel b, and the conveying wheel a presses the edge banding against the conveying wheel b through the elastic telescopic rod on the mounting frame; A second extrusion wheel is provided between each two adjacent pairs of one-way conveying wheels, and at least two second extrusion wheels are staggered and provided on both sides of the edge banding to extrude the edge banding from both sides respectively; The first extrusion wheel and the second extrusion wheel both include a wheel body part and an elastic slide that pushes the wheel body part to extrude the edge banding, wherein the elastic slide can generate an elastic extrusion force when the wheel body part extrude the edge banding, and the magnitude of the elastic extrusion force is smaller than the tensioning force generated by the tensioning tray.

[0007] Preferably, the elastic slides of the first extrusion wheel and the second extrusion wheel each include end blocks fixed to both ends of the slide rail, a first slider slidably connected to the slide rail, and a first spring, and the second extrusion wheel further includes a limit switch; The end block and the slide rail are both fixedly connected to the mounting frame, and the wheel body is connected to the first slider; The axial direction of the first spring is parallel to the sliding direction of the first slider. When the wheel body partially squeezes the edge banding, the first spring contracts to generate an elastic squeezing force. When the elastic squeezing force is released and the first spring returns to its original length, the limit switch is squeezed and triggered.

[0008] Preferably, the wheel body portion includes a cylindrical wheel, conical wheels fixed at both ends of the cylindrical wheel, and a fixed plate rotatably connected to one of the conical wheels; the first slider is fixedly connected to the fixed plate, and the side surface of the edge band is in rolling contact with the circumference of the cylindrical wheel; A first guide rod is fixed between the two end blocks, a first slider is slidably arranged on the first guide rod, and two ends of the first spring are fixedly connected to the first slider and one of the end blocks respectively; The limit switch is fixed to the other end block.

[0009] Preferably, the one-way conveying wheel includes a first inner lining wheel and an outer lining sleeve sleeved on the outside of the first inner lining wheel. The top end of the first inner lining wheel is coaxially fixed with an end shaft, and the outer side of the end shaft is rotatably connected to a fixed sleeve through a one-way bearing.

[0010] Preferably, the outer sleeve is a rubber airbag with an inflation cavity formed inside.

[0011] Preferably, the water dipping structure includes a water dipping wheel and a support wheel rotatably connected to the mounting frame, and a water tank fixedly connected to the mounting frame; The water wheel includes a sponge cover, the bottom of which is inserted into the clean water inside the water tank, and the top of which is in rolling contact with one side of the edge banding; A through groove is provided on one side of the top of the water tank, the edge sealing belt passes through the through groove, and a wiper blade is fixed on the inner surface of the through groove.

[0012] Preferably, the water-dipping wheel further comprises a second lining wheel wrapped in a sponge cover, and the top end of the second lining wheel is rotatably connected to the mounting frame.

[0013] Preferably, the mounting frame includes a first flat plate, a second flat plate, and a mounting plate fixedly connected to the first flat plate via a first connecting plate; The conveying wheel a and the water-dipping wheel are both rotatably connected to the second flat plate, and the conveying wheel b and the steering wheel are both rotatably connected to the first flat plate; The second flat plate is connected to the mounting plate via an elastic telescopic rod; The second flat plate is fixedly connected to the water tank through the second connecting plate and the third connecting plate.

[0014] Preferably, the elastic telescopic rod includes an intermediate tube, an outer sleeve slidably mounted on the outside of the intermediate tube, a second guide rod slidably inserted into the interior of the intermediate tube through a guide sleeve, a second slider slidably mounted inside the intermediate tube and fixed to one end of the second guide rod, and a second spring arranged between the guide sleeve and the second slider; the other end of the second guide rod and one end of the outer sleeve are both fixedly connected to the second connecting plate.

[0015] A method for automatic edge sealing of gypsum boards, based on the above-mentioned automatic edge sealing device for gypsum boards, comprises the following steps: S1. Install the edge banding onto the tensioning pallet; S2. Pull the second flat plate to extend the elastic telescopic rod, gradually moving the second flat plate away from the first flat plate, separating the conveying wheel a and the conveying wheel b in the pair of one-way conveying wheels, and separating the water-dipping wheel and the supporting wheel; S3, pulling the free end of the edge banding and moving it between the conveying wheel a and the conveying wheel b and between the water-dipping wheel and the supporting wheel, and then turning it through the steering wheel and pressing it against the cut edge of the gypsum board using the first extrusion wheel; S4, relying on the elastic force of the extended elastic telescopic rod to reset the second flat plate, so that the edge band is clamped between the conveying wheel a and the conveying wheel b and between the water wheel and the support wheel; S5. Use conveying equipment to move the gypsum board so that the edge banding tape soaked in water gradually sticks to cover the cut edge of the gypsum board.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Due to the provision of the one-way conveying wheel of the present invention, the edge banding can only be conveyed in one direction, that is, the edge banding can only be moved toward the gypsum board and cannot be rewound onto the edge banding roll. At the same time, due to the tensioning force applied to the edge banding by the tensioning tray, combined with the rolling friction of the one-way conveying wheel and the water-wetting structure, the edge banding will not be torn or broken due to its own sudden rewinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a right side structural schematic diagram of the present invention; Figure 3 For the present invention Figure 1 Structural diagram of the local position in the middle; Figure 4 For the present invention Figure 3 Schematic diagram of the top view of the structure at a local position; Figure 5 It is a structural schematic diagram of the one-way conveying wheel of the present invention; Figure 6 Schematic diagram of the top cross-sectional structure of the outer bushing of the present invention; Figure 7 This is a schematic structural diagram of the second extrusion wheel of the present invention; Figure 8 This is a schematic diagram of the overall structure of the second extrusion wheel of the present invention; Figure 9 It is a structural schematic diagram of the water-wetting structure of the present invention; Figure 10 It is a schematic diagram of the partial structure of the water-wetting structure of the present invention; Figure 11 It is a structural schematic diagram of the mounting frame of the present invention; Figure 12 It is a schematic diagram of the cross-sectional three-dimensional structure of the elastic telescopic rod of the present invention.

[0018] Figure: 1, one-way conveying wheel; 11, first inner lining wheel; 12, outer lining; 121, inflation chamber; 13, end shaft; 14, fixed sleeve; 15, one-way bearing; 2, water-wetting structure; 21, water-wetting wheel; 211, second inner lining wheel; 212, sponge sleeve; 22, water tank; 221, through slot; 23, wiper blade; 24, support wheel; 3, steering wheel; 4, first extrusion wheel; 5, second extrusion wheel; 51, conical wheel; 52, cylindrical wheel; 53, fixed plate; 54, elastic slide; 541, end block; 542 , slide rail; 543, first slider; 544, first guide rod; 545, first spring; 546, limit switch; 6, edge banding; 7, gypsum board; 8, tensioning tray; 9, mounting bracket; 91, first flat plate; 92, second flat plate; 93, mounting plate; 94, first connecting plate; 95, second connecting plate; 96, third connecting plate; 97, elastic telescopic rod; 971, middle tube; 972, outer sleeve; 973, second guide rod; 974, guide sleeve; 975, second slider; 976, second spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1-12 , the present invention provides a technical solution: A gypsum board automatic edge sealing device includes a tensioning tray 8 and an edge band 6 arranged on the tensioning tray 8. The function of the tensioning tray 8 is to keep the edge band 6 in a tensioned state to ensure that the edge band 6 can be adhered to the cut edge of the gypsum board 7 without wrinkles. The tensioning tray 8 is a prior art and will not be described in detail here.

[0021] The edge banding 6 is sequentially conveyed by at least three pairs of one-way conveying wheels 1, wetted by the water-wetting structure 2 and turned by the steering wheel 3, and then pressed against the cut edge of the gypsum board 7 by the first extrusion wheel 4, and then adhered to the cut edge of the gypsum board 7 as the gypsum board 7 moves; for the convenience of description, the present embodiment takes three pairs of one-way conveying wheels 1 as an example. The basic working principle of the above technical solution is: the edge banding 6 is conveyed to the position of the water-wetting structure 2 by the one-way conveying wheel 1 for wetting, so that the side of the edge banding 6 that needs to be pasted with the cut edge of the gypsum board 7 remains moist, and then passes through the steering wheel 3 to rotate It is then pressed backward by the first extrusion wheel 4 against the cut edge of the gypsum board 7, so that the wet surface of the edge banding 6 is adhered to the cut edge of the gypsum board 7; in this process, due to the setting of the one-way conveying wheel 1, the edge banding 6 can only be conveyed in one direction, that is, the edge banding 6 can only move toward the gypsum board 7 and cannot be rewound onto the edge banding roll. At the same time, due to the tensioning force applied to the edge banding 6 by the tensioning tray 8, combined with the rolling friction of the one-way conveying wheel 1 and the wet structure 2, the edge banding 6 will not be torn or broken due to its own sudden rewinding.

[0022] In the present invention, for the convenience of description, the moving direction of the gypsum board 7 is positioned as the front-back direction.

[0023] In this embodiment, the one-way conveying wheel 1, the water-wetting structure 2, the steering wheel 3 and the first extrusion wheel 4 are all arranged on the mounting frame 9; the specific structure of the mounting frame 9 is described in detail below.

[0024] A pair of one-way conveying wheels 1 includes a conveying wheel a and a conveying wheel b. In this embodiment, the conveying wheel a is in rolling contact with the rear side of the edge banding 6, and the conveying wheel b is in rolling contact with the front side of the edge banding 6. The conveying wheel a presses the edge banding 6 against the conveying wheel b through the elastic telescopic rod 97 on the mounting frame 9. The position of the conveying wheel b remains unchanged, and the position of the conveying wheel a is variable, so that the staff can adjust the distance between the conveying wheel a and the conveying wheel b, and it is convenient to place the edge banding 6 between the conveying wheel a and the conveying wheel b.

[0025] The second extrusion wheel 5 is provided between each two adjacent pairs of one-way conveying wheels 1, and at least two second extrusion wheels 5 are staggered and arranged on both sides of the edge band 6 to squeeze the edge band 6 from both sides. Specifically, one of the second extrusion wheels 5 squeezes the rear side of the edge band 6 from the back to the front, and the other second extrusion wheel 5 squeezes the front side of the edge band 6 from the front to the back; the first extrusion wheel 4 and the second extrusion wheel 5 both include a wheel body part and an elastic slide 54 for pushing the wheel body part to squeeze the edge band 6, wherein the elastic slide 54 can generate an elastic extrusion force when the wheel body part squeezes the edge band 6, and the magnitude of the elastic extrusion force is smaller than the tensioning force generated by the tensioning tray 8. Since the magnitude of the elastic extrusion force is smaller than the tensioning force generated by the tensioning tray 8, the edge band 6 will not be spread out from the edge band roll due to the extrusion force of the second extrusion wheel 5 pair, and since the one-way conveying wheel 1 can only convey the edge band 6 in one direction, when the edge band 6 is not completely spread out from the edge band roll, the second extrusion wheel 5 is used to squeeze the edge band The existence of the pressure wheel 5 only serves to keep the edge banding 6 in a tensioned state. Once the edge banding 6 is completely unrolled from the edge banding roll, the end of the edge banding 6 away from the free end loses the tensioning effect of the tensioning tray 8. Therefore, the squeezing of the second squeezing wheel 5 will cause the end of the edge banding 6 away from the free end to instantly approach the one-way conveying wheel 1 at the rightmost end. At this time, in conjunction with the limit switch 546 on the second squeezing wheel 5, an automatic reminder for roll change can be achieved. The specific principle is: the limit switch 546 in this embodiment can be electrically connected to relevant alarm devices (not shown in the figure) and other equipment. When the second squeezing wheel 5 completely unrolls the edge banding 6 from the edge banding roll, the elastic slide 54 on it instantly returns to its initial state. At this time, the limit switch 546 will be triggered, causing it to switch from the disconnected state to the on state. At this time, the alarm device (not shown in the figure) and other equipment electrically connected to the limit switch 546 will be energized and sound an alarm, reminding the staff to replace the edge banding 6 in time.

[0026] As can be seen from the figure, the unwinding rotation axis of the edge banding roll in this embodiment is located at the front side of the gap between the conveying wheels a and b.

[0027] The elastic slide 54 of the first extrusion wheel 4 and the second extrusion wheel 5 are basically consistent with the wheel body part. The only difference is that the limit switch 546 is not set on the elastic slide 54 of the first extrusion wheel 4, while the limit switch 546 is set on the elastic slide 54 of the second extrusion wheel 5.

[0028] The wheel body includes a cylindrical wheel 52, conical wheels 51 fixed at both ends of the cylindrical wheel 52, and a fixed plate 53 rotatably connected to one of the conical wheels 51. The axial length of the cylindrical wheel 52 is consistent with the width of the edge banding 6. The first slider 543 is fixedly connected to the fixed plate 53. The side of the edge banding 6 is in rolling contact with the circumference of the cylindrical wheel 52. The two conical wheels 51 limit the edge banding 6 from the upper and lower sides respectively to ensure that the edge banding 6 will not shift in the vertical direction during the transportation process, so that the edge banding 6 can be accurately adhered to the cut edge of the gypsum board 7.

[0029] The elastic slide 54 of the first extrusion wheel 4 and the second extrusion wheel 5 both include end blocks 541 fixed at both ends of the slide rail 542, a first slider 543 slidably connected to the slide rail 542, and a first spring 545. Furthermore, a first guide rod 544 is fixed between the two end blocks 541, the first slider 543 is slidably set on the first guide rod 544, the two ends of the first spring 545 are respectively fixedly connected to the first slider 543 and one of the end blocks 541, and a limit switch 546 is fixed on the other end block 541. The second extrusion wheel 5 also includes a limit switch 546; the end block 541 and the slide rail 542 are both fixedly connected to the mounting frame 9, and the wheel body is connected to the first slider 543; the axial direction of the first spring 545 is parallel to the sliding direction of the first slider 543. When the wheel body extrudes the edge banding 6, the first spring 545 contracts to generate an elastic extrusion force. When the elastic extrusion force is released and the first spring 545 returns to its original length, the limit switch 546 is squeezed and triggered.

[0030] The first extrusion wheel 4 and the second extrusion wheel 5 using the above-mentioned mechanism can reduce the volume occupied by each. Furthermore, since the edge banding tape 6 is transported by the one-way conveying wheel 1 in the present invention, the space occupied by the entire edge banding device can be greatly reduced, which is convenient for the staff to install, debug and maintain.

[0031] The one-way conveying wheel 1 includes a first inner lining wheel 11 and an outer lining sleeve 12 sleeved on the outside of the first inner lining wheel 11. The top end of the first inner lining wheel 11 is coaxially fixed with an end shaft 13. The outer side of the end shaft 13 is rotatably connected to a fixed sleeve 14 through a one-way bearing 15. The fixed sleeve 14 is fixedly connected to the mounting frame 9. Further, the fixed sleeve 14 is respectively fixed on the lower surfaces of the first flat plate 91 and the second flat plate 92 of the mounting frame 9; the outer sleeve 12 is a rubber airbag, and an inflation chamber 121 is formed inside it. The outer bushing 12 is set as a rubber airbag. On the one hand, the rubber airbag is soft in texture, which can increase the friction between the one-way conveying wheel 1 and the edge band 6, and prevent the two one-way conveying wheels 1 in the same pair from damaging the edge band 6 due to the impact force at the moment of clamping the edge band 6 (the specific reason is that after the edge band 6 is placed between the conveying wheel a and the conveying wheel b, the elastic force of the elastic telescopic rod 97 will drive the conveying wheel a and the conveying wheel b to collide at a higher speed). On the other hand, by controlling the air pressure inside the inflation chamber 121 and then cooperating with the elastic force of the elastic telescopic rod 97, Not only can the original line contact between the conveying wheels a and b and the edge band 6 be changed to surface contact (the rubber airbag is easy to deform, so after the conveying wheels a and b are squeezed together by the elastic force of the elastic telescopic rod 97, the contact position between the conveying wheels a and b and the edge band 6 is deformed into a plane, thereby increasing the friction between the edge band 6 and the one-way conveying wheel 1 and ensuring the stability of its one-way conveying of the edge band 6), but also by changing the size of the air pressure inside the inflation chamber 121, the size of the contact surface area between the conveying wheels a and b and the edge band 6 can also be changed.

[0032] The water-dipping structure 2 includes a water-dipping wheel 21 and a support wheel 24 rotatably connected to the mounting frame 9, and a water tank 22 fixedly connected to the mounting frame 9, and the water tank 22 is used to store clean water; further, the water-dipping wheel 21 includes a sponge cover 212, the bottom of the sponge cover 212 is inserted into the clean water inside the water tank 22, and the top of the sponge cover 212 is in rolling contact with one side of the edge banding 6. The water-dipping wheel 21 also includes a second lining wheel 211 wrapped in the sponge cover 212, and the top of the second lining wheel 211 is rotatably connected to the mounting frame 9; a through groove 221 is opened on one side of the top of the water tank 22, and the edge banding 6 passes through the through groove 221, and a wiper blade 23 is fixed to the inner surface of the through groove 221. The basic principle of the water-wetting structure 2 is: the part of the sponge sleeve 212 inserted into the clean water is mainly used to absorb moisture, and then the moisture is transferred to the part of the sponge sleeve 212 not inserted into the clean water, and then the clean water is rolled onto the rear side of the edge band 6 through the rolling of the part not inserted into the clean water. The setting of the wiper blade 23 can, on the one hand, scrape and smooth the water on the rear side of the edge band 6, and on the other hand, it is made of rubber or silicone material and can undergo elastic deformation. The elastic force generated after the deformation can react on the edge band 6 to keep the edge band 6 in a tensioned state.

[0033] The specific structure of the mounting frame 9 is described below.

[0034] The mounting frame 9 includes a first flat plate 91, a second flat plate 92, and a mounting plate 93 fixedly connected to the first flat plate 91 via a first connecting plate 94. The first flat plate 91 and the second flat plate 92 are maintained at the same horizontal height; wherein, the conveying wheel a and the water-dipping wheel 21 are rotatably connected to the second flat plate 92, and the conveying wheel b, the steering wheel 3 and the support wheel 24 are rotatably connected to the first flat plate 91; the second flat plate 92 is connected to the mounting plate 93 via an elastic telescopic rod 97; and the second flat plate 92 is fixedly connected to the water tank 22 via a second connecting plate 95 and a third connecting plate 96.

[0035] The elastic telescopic rod 97 includes an intermediate tube 971, an outer sleeve 972 slidably mounted on the outside of the intermediate tube 971, a second guide rod 973 slidably inserted into the interior of the intermediate tube 971 through a guide sleeve 974, a second slider 975 slidably mounted inside the intermediate tube 971 and fixed to one end of the second guide rod 973, and a second spring 976 arranged between the guide sleeve 974 and the second slider 975; the other end of the second guide rod 973 and one end of the outer sleeve 972 are both fixedly connected to the second connecting plate 95.

[0036] A method for automatically sealing the edge of a gypsum board is provided. The method is based on the above-mentioned automatic edge sealing device for gypsum boards and comprises the following steps: S1, installing the edge band 6 onto the tensioning tray 8; S2. Pull the second flat plate 92 so that the elastic telescopic rod 97 extends, and the second flat plate 92 gradually moves away from the first flat plate 91. The conveying wheel a and the conveying wheel b in the pair of one-way conveying wheels 1 separate, and the water wheel 21 and the support wheel 24 separate; S3, pull the free end of the edge banding 6 and move it between the conveying wheels a and b and between the water-dipping wheel 21 and the supporting wheel 24, then turn it through the steering wheel 3 and press it against the cut edge of the gypsum board 7 using the first extrusion wheel 4; S4, the elastic force of the elastic telescopic rod 97 after extension is used to reset the second flat plate 92, so that the edge band 6 is clamped between the conveying wheels a and b and between the water wheel 21 and the support wheel 24; S5. Use a conveying device to move the gypsum board 7 so that the edge banding 6 soaked in water gradually adheres to and covers the cut edge of the gypsum board 7.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic edge banding device for gypsum board, comprising a tensioning tray and an edge banding strip arranged on the tensioning tray, characterized in that: The edge banding is sequentially conveyed by at least three pairs of one-way conveying wheels, wetted by the water-wetting structure, and turned by the turning wheel, and then pressed against the cut edge of the gypsum board by the first extrusion wheel, and then adhered to the cut edge of the gypsum board as the gypsum board moves; The one-way conveying wheel, the water-soaking structure, the steering wheel and the first extrusion wheel are all arranged on the mounting frame; A pair of one-way conveying wheels includes a conveying wheel a and a conveying wheel b, and the conveying wheel a presses the edge band against the conveying wheel b through an elastic telescopic rod on the mounting frame; A second extrusion wheel is arranged between each two adjacent pairs of one-way conveying wheels, and at least two second extrusion wheels are staggeredly arranged on both sides of the edge banding to extrude the edge banding from both sides respectively; The first extrusion wheel and the second extrusion wheel both include a wheel body part and an elastic slide seat that pushes the wheel body part to extrude the edge banding, wherein the elastic slide seat can generate an elastic extrusion force when the wheel body part extrudes the edge banding, and the magnitude of the elastic extrusion force is smaller than the tensioning force generated by the tensioning tray.

2. The automatic edge sealing device for gypsum board according to claim 1, characterized in that: The elastic slide seats of the first extrusion wheel and the second extrusion wheel both include end blocks fixed at both ends of the slide rail, a first slide block slidably connected to the slide rail, and a first spring, and the second extrusion wheel also includes a limit switch; The end block and the slide rail are both fixedly connected to the mounting frame, and the wheel body is connected to the first slide block; The axial direction of the first spring is parallel to the sliding direction of the first slider. When the wheel body partially squeezes the edge banding, the first spring contracts to generate an elastic squeezing force. When the elastic squeezing force is released to restore the first spring to its original length, the limit switch is squeezed and triggered.

3. The automatic edge sealing device for gypsum board according to claim 2, characterized in that: The wheel body part includes a cylindrical wheel, conical wheels fixed at both ends of the cylindrical wheel, and a fixing plate rotatably connected to one of the conical wheels. The first slider is fixedly connected to the fixing plate, and the side surface of the edge band is in rolling contact with the circumference of the cylindrical wheel. A first guide rod is fixed between the two end blocks, a first slider is slidably arranged on the first guide rod, and two ends of the first spring are respectively fixedly connected to the first slider and one of the end blocks; The limit switch is fixed to the other end block.

4. The automatic edge sealing device for gypsum board according to claim 1, characterized in that: The one-way conveying wheel comprises a first inner lining wheel and an outer lining sleeve sleeved on the outer side of the first inner lining wheel. An end shaft is coaxially fixed to the top end of the first inner lining wheel, and a fixed sleeve is rotatably connected to the outer side of the end shaft through a one-way bearing.

5. The automatic edge sealing device for gypsum board according to claim 4, characterized in that: The outer bushing is a rubber airbag with an inflation cavity formed inside.

6. The automatic edge sealing device for gypsum board according to claim 1, characterized in that: The water dipping structure includes a water dipping wheel and a supporting wheel rotatably connected to the mounting frame, and a water tank fixedly connected to the mounting frame; The water wheel includes a sponge cover, the bottom of which is inserted into the clean water in the water tank, and the top of which is in rolling contact with one side of the edge banding; A through groove is provided on one side of the top of the water tank, the edge band passes through the through groove, and a wiper blade is fixed on the inner surface of the through groove.

7. The automatic edge sealing device for gypsum board according to claim 6, characterized in that: The water-dipping wheel also includes a second lining wheel wrapped by a sponge sleeve, and the top end of the second lining wheel is rotatably connected to the mounting frame.

8. The automatic edge sealing device for gypsum board according to claim 6, characterized in that: The mounting frame includes a first flat plate, a second flat plate, and a mounting plate fixedly connected to the first flat plate via a first connecting plate; The conveying wheel a and the water-dipping wheel are both rotatably connected to the second flat plate, and the conveying wheel b and the steering wheel are both rotatably connected to the first flat plate; The second flat plate is connected to the mounting plate via an elastic telescopic rod; The second flat plate is fixedly connected to the water tank through the second connecting plate and the third connecting plate.

9. The automatic edge sealing device for gypsum board according to claim 8, characterized in that: The elastic telescopic rod includes an intermediate tube, an outer sleeve slidably mounted on the outside of the intermediate tube, a second guide rod slidably inserted into the interior of the intermediate tube through a guide sleeve, a second slider slidably mounted inside the intermediate tube and fixed to one end of the second guide rod, and a second spring arranged between the guide sleeve and the second slider; the other end of the second guide rod and one end of the outer sleeve are both fixedly connected to the second connecting plate.

10. A method for automatic edge sealing of gypsum board, characterized in that: The automatic edge sealing method for gypsum board is based on the automatic edge sealing device for gypsum board according to any one of claims 1 to 9, and comprises the following steps: S1. Install the edge banding onto the tensioning pallet; S2, pull the second flat plate to extend the elastic telescopic rod, the second flat plate gradually moves away from the first flat plate, the conveying wheel a and the conveying wheel b in a pair of one-way conveying wheels are separated, and the water-dipping wheel and the supporting wheel are separated; S3, pull the free end of the edge banding and move the edge banding to between the conveying wheel a and the conveying wheel b and between the water-dipping wheel and the supporting wheel, and then press the edge banding against the cut edge of the gypsum board by the first extrusion wheel after being turned by the turning wheel; S4, the second flat plate is reset by the elastic force of the elastic telescopic rod after extension, so that the edge band is clamped between the conveying wheel a and the conveying wheel b and between the water wheel and the supporting wheel; S5. Use conveying equipment to move the gypsum board so that the edge banding tape soaked in water gradually sticks to cover the cut edge of the gypsum board.

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