An automatic edge-sealing method and device for gypsum boards

Abstract

The present invention relates to the technical field of gypsum board edge sealing, and in particular to an automatic gypsum board edge sealing method and device, which includes a tensioning tray and an edge sealing tape arranged on the tensioning tray. The edge sealing tape is successively conveyed by at least three pairs of one-way conveying wheels, wetted by a wetting structure, turned by a turning wheel, and then pressed against the cutting edge of the gypsum board by a first pressing wheel, and then adhered to the cutting edge of the gypsum board as the gypsum board moves; the one-way conveying wheels, the wetting structure, the turning wheel, and the first pressing 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 sealing tape against the conveying wheel b through an elastic telescopic rod on the mounting frame; a second pressing wheel is arranged between every two adjacent pairs of one-way conveying wheels, and at least two second pressing wheels are respectively arranged on both sides of the edge sealing tape in a staggered manner to squeeze the edge sealing tape from both sides respectively. The present invention enables the edge sealing tape not to be torn or disconnected due to its sudden self-rewinding.

Description

Technical Field

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

[0002] After the gypsum board is formed and cut into pieces, it is necessary to perform edge sealing treatment on the cutting position (cutting edge). Edge sealing is not only for aesthetics, but more importantly, it can enhance the durability and overall structural stability of the gypsum board. At the same time, it also helps to prevent water and moisture, and extend the service life of the gypsum board.

[0003] The Chinese invention patent with the publication number CN113370398B discloses an automatic gypsum board edge sealing device, which includes 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 dipping device is installed at the bending part of the guide rail. A sealing tape is sleeved on the tensioning device, and a cutting device for cutting the sealing tape is installed on the positioning device. The sealing tape passes through the water dipping device along the guide rail to get wet and is then positioned on the gypsum board by the positioning device.

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

[0005] The purpose of the present invention is to provide an automatic gypsum board edge sealing method and device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An automatic gypsum board edge sealing device includes a tensioning tray and a sealing tape arranged on the tensioning tray. The sealing tape is sequentially conveyed by at least three pairs of one-way conveying wheels, wetted by a water dipping structure, turned by a turning wheel, and then pressed against the cutting edge of the gypsum board by a first pressing wheel, and then adhered to the cutting edge of the gypsum board as the gypsum board moves.

[0008] The one-way conveying wheels, the water dipping structure, the turning wheel and the first pressing wheel are all arranged on the mounting frame.

[0009] A pair of unidirectional conveying wheels includes a conveying wheel a and a conveying wheel b, and the conveying wheel a presses the edge sealing tape against the conveying wheel b through an elastic telescopic rod on the mounting bracket;

[0010] A second pressing wheel is arranged between every two adjacent pairs of unidirectional conveying wheels. At least two second pressing wheels are respectively arranged on both sides of the edge sealing tape in a staggered manner to press the edge sealing tape from both sides;

[0011] Both the first pressing wheel and the second pressing wheel include a wheel body part and an elastic sliding seat for pushing the wheel body part to press the edge sealing tape. Among them, the elastic sliding seat can generate an elastic pressing force when the wheel body part presses the edge sealing tape, and the magnitude of the elastic pressing force is less than the tension force generated by the tension tray.

[0012] Preferably, the elastic sliding seats of the first pressing wheel and the second pressing wheel both include end blocks fixed at both ends of the slide rail, a first slider slidably connected to the slide rail, and a first spring. The second pressing wheel further includes a limit switch;

[0013] The end blocks and the slide rail are both fixedly connected to the mounting bracket, and the wheel body part is connected to the first slider;

[0014] The axial direction of the first spring is parallel to the sliding direction of the first slider. When the wheel body part presses the edge sealing tape, the first spring contracts to generate an elastic pressing force. When the elastic pressing force is released and the first spring returns to its original length, the limit switch is pressed and triggered.

[0015] Preferably, 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 and the fixing plate are fixedly connected, and the side surface of the edge sealing tape rolls into contact with the circumferential surface of the cylindrical wheel;

[0016] A first guiding rod is fixed between the two end blocks. The first slider is slidably arranged on the first guiding rod, and both ends of the first spring are fixedly connected to the first slider and one of the end blocks respectively;

[0017] The limit switch is fixed on the other end block.

[0018] Preferably, the unidirectional conveying wheel includes a first inner lining wheel and an outer lining sleeve sleeved outside the first inner lining wheel. A end shaft is coaxially fixed at the top of the first inner lining wheel, and a fixed sleeve is rotatably connected to the outside of the end shaft through a one-way bearing.

[0019] Preferably, the outer lining sleeve is a rubber airbag, and an inflation cavity is formed inside it.

[0020] Preferably, the water-wetting structure includes a water-wetting wheel and a supporting wheel rotatably connected to the mounting bracket and a water tank fixedly connected to the mounting bracket;

[0021] The water-wetting wheel includes a sponge sleeve. The bottom of the sponge sleeve is inserted into the clear water inside the water tank, and the top of the sponge sleeve rolls into contact with one side surface of the edge sealing tape;

[0022] On one side of the top of the water tank, a passing slot is provided. The edge sealing tape passes through the passing slot, and a wiper blade is fixed on the inner surface of the passing slot.

[0023] Preferably, the water-dipping wheel further includes a second inner lining wheel wrapped by a sponge sleeve, and the top end of the second inner lining wheel is rotatably connected to the mounting bracket.

[0024] Preferably, the mounting bracket includes a first flat plate, a second flat plate, and a mounting plate fixedly connected to the first flat plate through a first connecting plate;

[0025] 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;

[0026] The second flat plate is connected to the mounting plate through an elastic telescopic rod;

[0027] The second flat plate is fixedly connected to the water tank through a second connecting plate and a third connecting plate.

[0028] Preferably, the elastic telescopic rod includes an intermediate tube, an outer tube slidably sleeved 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 disposed inside the intermediate tube and fixed to one end of the second guide rod, and a second spring disposed between the guide sleeve and the second slider; the other ends of the second guide rod and the outer tube are both fixedly connected to the second connecting plate.

[0029] An automatic edge sealing method for gypsum boards, the automatic edge sealing method for gypsum boards is based on the above-mentioned automatic edge sealing device for gypsum boards, and includes the following steps:

[0030] S1. Install the edge sealing tape on the tensioning tray;

[0031] S2. Pull the second flat plate to make the elastic telescopic rod extend, and the second flat plate gradually moves away from the first flat plate, and 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;

[0032] S3. Pull the free end of the edge sealing tape, and make the edge sealing tape move between the conveying wheel a and the conveying wheel b and between the water-dipping wheel and the supporting wheel, and then after turning through the steering wheel, press against the cutting edge of the gypsum board by the first pressing wheel;

[0033] S4. Rely on the elastic force after the elongation of the elastic telescopic rod to make the second flat plate reset, so that the edge sealing tape is clamped between the conveying wheel a and the conveying wheel b and between the water-dipping wheel and the supporting wheel;

[0034] S5. Use the conveying device to move the gypsum board, so that the wetted edge sealing tape gradually adheres to and covers the cutting edge of the gypsum board.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] Due to the setting of the one-way conveying wheel in the present invention, the edge banding can only be conveyed in one direction, that is, the edge banding can only move towards the gypsum board and cannot be rewound onto the edge banding roll again. At the same time, due to the existence of the tension force applied by the tension tray to the edge banding, combined with the rolling friction of the one-way conveying wheel and the water-dipping structure, the edge banding will not be torn or disconnected due to its sudden rewinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 is a schematic diagram of the right view structure of the present invention;

[0039] Figure 3 is of the present invention Figure 1 is a schematic diagram of the structure of a local position in the present invention;

[0040] Figure 4 is of the present invention Figure 3 is a schematic diagram of the top view structure of a local position in the present invention;

[0041] Figure 5 is a schematic diagram of the structure of the one-way conveying wheel of the present invention;

[0042] Figure 6 is a schematic diagram of the top view cross-sectional structure of the outer bushing of the present invention;

[0043] Figure 7 is a schematic diagram of the structure of the second pressing wheel of the present invention;

[0044] Figure 8 is a schematic diagram of the overall structure of the second pressing wheel of the present invention;

[0045] Figure 9 is a schematic diagram of the structure of the water-dipping structure of the present invention;

[0046] Figure 10 is a schematic diagram of the local structure of the water-dipping structure of the present invention;

[0047] Figure 11 is a schematic diagram of the structure of the mounting bracket of the present invention;

[0048] Figure 12 is a schematic diagram of the cross-sectional three-dimensional structure of the elastic telescopic rod of the present invention.

[0049] In the 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 groove; 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 seat; 541, end block; 542 , slide rail; 543, first slider; 544, first guide rod; 545, first spring; 546, limit switch; 6, edge band; 7, gypsum board; 8, tensioning tray; 9, mounting frame; 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

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0051] See also Figures 1-12 , the present invention provides a technical solution:

[0052] A gypsum board automatic edge banding device includes a tensioning tray 8 and an edge banding strip 6 arranged on the tensioning tray 8, wherein the tensioning tray 8 is used to keep the edge banding strip 6 in a tensioned state to ensure that the edge banding strip 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.

[0053] The edge banding tape 6 is successively conveyed by at least three pairs of unidirectional conveying wheels 1, wetted by the wetting structure 2, turned by the turning wheel 3, and then pressed against the cut edge of the gypsum board 7 by the first pressing 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, in this embodiment, three pairs of unidirectional conveying wheels 1 are taken as an example for illustration. The basic working principle of the above technical solution is: the edge banding tape 6 is conveyed to the position of the wetting structure 2 by the unidirectional conveying wheels 1 for wetting, so that the side of the edge banding tape 6 that needs to be adhered to the cut edge of the gypsum board 7 remains wet. After that, it is turned by the turning wheel 3 and then pressed against the cut edge of the gypsum board 7 by the first pressing wheel 4, so that the wet surface of the edge banding tape 6 is adhered to the cut edge of the gypsum board 7; during this process, due to the setting of the unidirectional conveying wheels 1, the edge banding tape 6 can only be conveyed unidirectionally, that is, the edge banding tape 6 can only move towards the gypsum board 7 and cannot be rewound onto the edge banding tape roll again. At the same time, due to the existence of the tension force applied by the tension tray 8 to the edge banding tape 6, combined with the rolling friction of the unidirectional conveying wheels 1 and the wetting structure 2, the edge banding tape 6 will not be torn or disconnected due to its sudden rewinding.

[0054] In the present invention, for the convenience of description, the moving direction of the gypsum board 7 is defined as the front-back direction.

[0055] In this embodiment, the unidirectional conveying wheels 1, the wetting structure 2, the turning wheel 3 and the first pressing wheel 4 are all arranged on the mounting frame 9; the specific structure of the mounting frame 9 will be described in detail below.

[0056] A pair of unidirectional 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 tape 6, the conveying wheel b is in rolling contact with the front side of the edge banding tape 6, and the conveying wheel a presses the edge banding tape 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 as to facilitate the staff to adjust the distance between the conveying wheel a and the conveying wheel b and facilitate placing the edge banding tape 6 between the conveying wheel a and the conveying wheel b.

[0057] A second pressing wheel 5 is arranged between every two adjacent pairs of one-way conveying wheels 1. At least two second pressing wheels 5 are respectively arranged in a staggered manner on both sides of the edge banding strip 6 to press the edge banding strip 6 from both sides. Specifically, one of the second pressing wheels 5 presses the rear side of the edge banding strip 6 from back to front, and the other second pressing wheel 5 presses the front side of the edge banding strip 6 from front to back; both the first pressing wheel 4 and the second pressing wheel 5 include a wheel body part and an elastic sliding seat 54 that pushes the wheel body part to press the edge banding strip 6. Among them, the elastic sliding seat 54 can generate an elastic pressing force when the wheel body part presses the edge banding strip 6, and the magnitude of the elastic pressing force is less than the tension force generated by the tension tray 8. Since the magnitude of the elastic pressing force is less than the tension force generated by the tension tray 8, the edge banding strip 6 will not spread out from the edge banding strip roll due to the pressing force of the pair of second pressing wheels 5. Moreover, due to the characteristic that the one-way conveying wheel 1 can only convey the edge banding strip 6 in one direction, when the edge banding strip 6 has not completely spread out from the edge banding strip roll, the existence of the second pressing wheel 5 only serves to keep the edge banding strip 6 in a tensioned state. However, once the edge banding strip 6 completely spreads out from the edge banding strip roll, at this time, since one end of the edge banding strip 6 far from the free end loses the tensioning effect of the tension tray 8, the pressing of the second pressing wheel 5 will cause one end of the edge banding strip 6 far from the free end to instantaneously approach the rightmost one-way conveying wheel 1. At this time, in cooperation with the limit switch 546 on the second pressing wheel 5, an automatic prompt for roll change can be realized. The specific principle is as follows: The limit switch 546 in this embodiment can be electrically connected to devices such as a related alarm (not shown in the figure). When the edge banding strip 6 completely spreads out from the edge banding strip roll, the elastic sliding seat 54 on the second pressing wheel 5 instantaneously returns to its initial state. At this time, the limit switch 546 will be triggered, causing it to change from the off state to the on state. At this time, devices such as the alarm (not shown in the figure) electrically connected to the limit switch 546 will be powered on to emit an alarm, reminding the staff to replace the edge banding strip 6 in a timely manner.

[0058] As can be seen from the figure, in this embodiment, the unwinding rotation axis of the edge banding strip roll is located in front of the gap between the conveying wheel a and the conveying wheel b.

[0059] The elastic sliding seat 54 part of the first pressing wheel 4 and the second pressing wheel 5 is basically the same as the wheel body part. The only difference is that the limit switch 546 is not provided on the elastic sliding seat 54 of the first pressing wheel 4, while the limit switch 546 is provided on the elastic sliding seat 54 of the second pressing wheel 5.

[0060] The wheel body part includes a cylindrical wheel 52, conical wheels 51 fixed at both ends of the cylindrical wheel 52, and a fixing 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 sealing tape 6. The first slider 543 is fixedly connected to the fixing plate 53. The side surface of the edge sealing tape 6 is in rolling contact with the circumferential surface of the cylindrical wheel 52. The two conical wheels 51 respectively limit the edge sealing tape 6 from the upper and lower sides, ensuring that the edge sealing tape 6 will not shift in the vertical direction during transportation, so that the edge sealing tape 6 can be accurately pasted onto the cutting edge of the gypsum board 7.

[0061] The elastic sliding seats 54 of the first pressing wheel 4 and the second pressing 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. Further, a first guiding rod 544 is fixed between the two end blocks 541. The first slider 543 is slidably arranged on the first guiding 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. The limit switch 546 is fixed on the other end block 541. The second pressing wheel 5 also includes the limit switch 546. The end blocks 541 and the slide rail 542 are both fixedly connected to the mounting bracket 9. The wheel body part 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 part presses the edge sealing tape 6, the first spring 545 contracts to generate an elastic pressing force. When the elastic pressing force is released and the first spring 545 returns to its original length, the limit switch 546 is pressed and triggered.

[0062] The first pressing wheel 4 and the second pressing wheel 5 adopting the above mechanism can reduce the volume occupied by each of them. Further, since the edge sealing tape 6 is conveyed by the one-way conveying wheel 1 in the present invention, the space occupied by the entire edge sealing device can be greatly reduced, which is convenient for the installation, debugging and maintenance of the staff.

[0063] The unidirectional conveying wheel 1 includes a first inner lining wheel 11 and an outer lining sleeve 12 sleeved outside the first inner lining wheel 11. A terminal shaft 13 is coaxially fixed to the top end of the first inner lining wheel 11. An outer fixing sleeve 14 is rotatably connected to the outside of the terminal shaft 13 through a one-way bearing 15. The fixing sleeve 14 is fixedly connected to the mounting frame 9. Further, the fixing sleeve 14 is respectively fixed to the lower surfaces of the first flat plate 91 and the second flat plate 92 of the mounting frame 9. The outer lining sleeve 12 is a rubber airbag, and an inflation cavity 121 is formed inside it. Setting the outer lining sleeve 12 as a rubber airbag, on the one hand, the rubber airbag has a soft texture, which can not only increase the friction between the unidirectional conveying wheel 1 and the edge sealing belt 6, but also prevent the two unidirectional conveying wheels 1 of the same pair from damaging the edge sealing belt 6 due to the impact force when clamping the edge sealing belt 6 (the specific reason is that after the edge sealing belt 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 impact at a high speed). On the other hand, by controlling the air pressure inside the inflation cavity 121 and then cooperating with the elastic force of the elastic telescopic rod 97, not only can the original line contact between the conveying wheel a and the conveying wheel b and the edge sealing belt 6 be changed to surface contact (the rubber airbag is easy to deform. Therefore, after the conveying wheel a and the conveying wheel b are squeezed together under the action of the elastic force of the elastic telescopic rod 97, the contact positions between the conveying wheel a and the conveying wheel b and the edge sealing belt 6 are deformed into planes, thereby increasing the friction between the edge sealing belt 6 and the unidirectional conveying wheel 1 and ensuring the stability of its unidirectional conveying of the edge sealing belt 6), but also by changing the air pressure inside the inflation cavity 121, the contact surface area between the conveying wheel a and the conveying wheel b and the edge sealing belt 6 can be changed.

[0064] The water-dipping structure 2 includes a water-dipping wheel 21, a supporting wheel 24 rotatably connected to the mounting frame 9, and a water tank 22 fixedly connected to the mounting frame 9. The water tank 22 is used for storing clean water. Further, the water-dipping wheel 21 includes a sponge sleeve 212. The bottom of the sponge sleeve 212 is inserted into the clean water inside the water tank 22, and the top of the sponge sleeve 212 is in rolling contact with one side surface of the edge sealing belt 6. The water-dipping wheel 21 also includes a second inner lining wheel 211 wrapped by the sponge sleeve 212. The top end of the second inner 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 sealing belt 6 passes through the through groove 221. A water scraping blade 23 is fixed to the inner surface of the through groove 221. The basic principle of the water-dipping structure 2 is that the part of the sponge sleeve 212 inserted into the clean water is mainly used to absorb water, and then transfer the water to the part of the sponge sleeve 212 that is not inserted into the clean water. Then, through the rolling of the part that is not inserted into the clean water, the clean water is rolled and coated on the rear side surface of the edge sealing belt 6. The setting of the water scraping blade 23 can, on the one hand, scrape and smooth the water on the rear side surface of the edge sealing belt 6, and on the other hand, since it is made of rubber or silica gel, it can undergo elastic deformation, and the elastic force generated after its deformation can act on the edge sealing belt 6 to keep the edge sealing belt 6 in a tensioned state.

[0065] The specific structure of the mounting bracket 9 will be introduced below.

[0066] The mounting bracket 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 through a first connecting plate 94. The first flat plate 91 and the second flat plate 92 are maintained at the same horizontal height. Among them, the conveying wheel a and the water-dipping wheel 21 are both rotatably connected to the second flat plate 92, and the conveying wheel b, the steering wheel 3, and the supporting wheel 24 are all rotatably connected to the first flat plate 91. The second flat plate 92 is connected to the mounting plate 93 through an elastic telescopic rod 97. The second flat plate 92 is fixedly connected to the water tank 22 through a second connecting plate 95 and a third connecting plate 96.

[0067] The elastic telescopic rod 97 includes an intermediate tube 971, an outer tube 972 slidably sleeved outside 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 disposed inside the intermediate tube 971 and fixed to one end of the second guide rod 973, and a second spring 976 disposed 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 tube 972 are both fixedly connected to the second connecting plate 95.

[0068] An automatic edge-sealing method for gypsum boards, which is based on the above-mentioned automatic edge-sealing device for gypsum boards, includes the following steps:

[0069] S1. Install the edge-sealing tape 6 on the tensioning tray 8.

[0070] S2. Pull the second flat plate 92 to make the elastic telescopic rod 97 extend, and the second flat plate 92 gradually moves away from the first flat plate 91, so that the conveying wheel a and the conveying wheel b in a pair of one-way conveying wheels 1 are separated, and the water-dipping wheel 21 and the supporting wheel 24 are separated.

[0071] S3. Pull the free end of the edge-sealing tape 6 and make the edge-sealing tape 6 move between the conveying wheel a and the conveying wheel b and between the water-dipping wheel 21 and the supporting wheel 24, and then after turning through the steering wheel 3, press it against the cutting edge of the gypsum board 7 by the first pressing wheel 4.

[0072] S4. Rely on the elastic force after the elongation of the elastic telescopic rod 97 to make the second flat plate 92 reset, so that the edge-sealing tape 6 is clamped between the conveying wheel a and the conveying wheel b and between the water-dipping wheel 21 and the supporting wheel 24.

[0073] S5. Use the conveying equipment to move the gypsum board 7, so that the wetted edge-sealing tape 6 gradually adheres to and covers the cutting edge of the gypsum board 7.

[0074] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present 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 a water-wetting structure, turned by a turning wheel, 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-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 for pushing 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 extrude the edge banding, and the magnitude of the elastic extrusion force is smaller than the tensioning force generated by the tensioning tray; 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 band, 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. 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.

2. 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.

3. The automatic edge sealing device for gypsum board according to claim 2, characterized in that: The outer bushing is a rubber airbag with an inflation cavity formed inside.

4. 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.

5. The automatic edge sealing device for gypsum board according to claim 4, 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.

6. The automatic edge sealing device for gypsum board according to claim 4, 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.

7. The automatic edge sealing device for gypsum board according to claim 6, 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.

8. 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 6 to 7, 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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