High-efficiency gluing machine with good coating effect and automatic gluing method

Abstract

The application discloses a high-efficiency gluing machine with good smearing effect and an automatic gluing method, and is applied to the technical field of gluing machines.The technical scheme is as follows: a moving and loading assembly is fixedly arranged on a plate conveying line based on a mounting frame, a glue dropping assembly is fixedly connected to the moving and loading assembly, an adjusting assembly for controlling the glue dropping amount and the glue dropping speed is fixedly connected to the glue dropping assembly, first and second glue smearing plates for preliminarily and further smearing glue respectively are fixedly connected to the glue dropping assembly and are symmetrically arranged at the two ends of the glue dropping assembly along the glue dropping direction, and a glue recovery assembly for collecting and recovering excess glue is fixedly arranged between the first and second glue smearing plates.The application has the technical effects that the gluing effect is good, the gluing efficiency is high, and the waste of glue is reduced.

Description

Technical Field

[0001] This invention relates to the field of glue applicator technology, and in particular to a high-efficiency glue applicator with good applicability and an automatic glue applicator method. Background Technology

[0002] Plywood is a sheet material consisting of three or more layers of veneer of suitable size, processed through processes such as gluing and hot pressing. Traditionally, gluing was done manually, which was inefficient and could also cause harm to the user due to harmful substances in the glue. While gluing rollers are now commonly used, existing machines often result in uneven glue application because the roller only contacts the board once. To achieve uniform and high-quality gluing, a second gluing process is required, significantly reducing production efficiency and increasing costs.

[0003] Currently, Chinese invention patent CN109382261B discloses a high-efficiency glue applicator, including a frame, a hopper at the top of the frame connected to a discharge pipe, a rotatable glue applicator roller installed below the hopper, and a sheet conveyor belt installed below the glue applicator roller. The glue applicator roller has a glue cavity inside, which is connected to the hopper via the discharge pipe. A mechanism receiving cavity is also provided around the glue cavity, containing multiple glue applicator baffles and glue spraying baffles, which divide the mechanism receiving cavity into multiple triggering chambers. Each triggering chamber contains a glue spraying airbag and a glue applicator airbag, which are connected to the glue cavity. The glue applicator airbag is also connected to a glue applicator brush installed outside the glue applicator roller, and the glue spraying airbag is connected to a nozzle installed outside the glue applicator roller. A trigger is also elastically installed outside the glue applicator roller.

[0004] Existing inventions use triggers to compress the adhesive spraying and coating airbags when the board comes into contact with the coating roller. This causes the spraying airbag to be squeezed into the trigger chamber, thus compressing both the spraying and coating airbags. The adhesive in the spraying airbag is first sprayed onto the board through the nozzle, while the adhesive in the coating airbag enters the coating brush and is subsequently applied to the board. This allows for both initial and subsequent adhesive application in a short time. However, on the one hand, the method of squeezing the spraying and coating airbags by pressing the trigger into the trigger chamber makes it difficult for the adhesive in the spraying airbag to be sprayed onto the board through the nozzle. To control the amount of adhesive sprayed onto the board, especially for boards with uneven surfaces, the contact between the board and the adhesive roller can cause the trigger to be squeezed into the trigger chamber, making it difficult to maintain a stable level and further increasing the difficulty of controlling the amount of adhesive sprayed. On the other hand, while the existing technology sprays adhesive onto the board, the adhesive in the adhesive airbag enters the adhesive brush for further application. However, using the adhesive brush for further application to the board increases the amount of adhesive used, and it is difficult to recycle the excess adhesive, resulting in adhesive waste. Therefore, improvement is necessary. Summary of the Invention

[0005] The primary objective of this invention is to provide a high-efficiency glue applicator with excellent coating effect. Its advantages include good coating effect, high coating efficiency, and reduced glue waste.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a high-efficiency glue applicator with good coating effect, comprising a board conveying line, wherein a positioning and fixing component for positioning and fixing the board is fixedly connected to the board conveying line; a transfer component is fixedly provided on the board conveying line based on a mounting frame, a glue dispensing component is fixedly connected to the transfer component, and an adjusting component for controlling the glue dispensing amount and dispensing speed is fixedly connected to the glue dispensing component; a first glue dispensing plate for initial glue application and a second glue dispensing plate for further glue application are symmetrically fixedly connected at both ends of the glue dispensing component along the glue dispensing direction; and a glue recycling component is fixedly provided between the first glue dispensing plate and the second glue dispensing plate, facing towards the second glue dispensing plate, for collecting and recycling excess glue.

[0007] The present invention is further configured such that: the transfer assembly includes a first lead screw sliding assembly fixedly disposed on the mounting frame along the plate conveying direction, the sliding end of the first lead screw sliding assembly is fixedly connected to a second lead screw sliding assembly disposed along a direction perpendicular to the plate conveying direction, and the sliding end of the second lead screw sliding assembly is fixedly provided with a telescopic assembly disposed along a vertical direction.

[0008] The present invention is further configured such that: the dispensing assembly includes a dispensing cavity fixedly connected to the telescopic end of the telescopic assembly and extending along the conveying direction of the sheet material; an inlet pipe is connected to the top of the dispensing cavity; a plurality of dispensing holes are uniformly opened on the bottom wall of the dispensing cavity along the conveying direction of the sheet material; a sliding plate is slidably connected in the vertical direction inside the dispensing cavity; a glue storage cavity for storing glue is formed between the sliding plate and the bottom wall of the dispensing cavity; an inlet is opened on the sliding plate; and the inlet pipe and the inlet are connected based on an elastic corrugated pipe.

[0009] The present invention is further configured such that: the side end of the bottom cavity wall of the dispensing cavity is provided with a plurality of insertion holes that correspond one-to-one with the dispensing holes and communicate with the dispensing holes along the board conveying direction; a sealing plate for sealing the dispensing holes is inserted into the insertion holes; and the number and arrangement order of the dispensing holes are adjusted based on the sealing plate to adapt to the dispensing needs of boards of different sizes and different dispensing positions.

[0010] The present invention is further configured such that: a spherical throat is provided at the center of the dispensing hole, and a set of spring pieces communicating with the dispensing hole are symmetrically fixed to the throat.

[0011] The present invention is further configured such that: the adjustment component includes an air pressure adjustment cavity disposed between the sliding plate and the top cavity wall of the dispensing cavity, and a plurality of air pressure pumps fixedly connected to the dispensing cavity and communicating with the air pressure adjustment cavity; the air pressure pumps adjust the pressure exerted by the sliding plate on the glue storage cavity by adjusting the air pressure in the air pressure adjustment cavity, thereby controlling the dispensing amount and dispensing speed.

[0012] The present invention is further configured such that: the first adhesive applicator includes an adhesive applicator substrate fixedly connected to the dispensing cavity; the adhesive applicator substrate has a plurality of arc-shaped protrusions that are uniformly arranged and protrude downward along the conveying direction of the substrate and correspond to the dispensing holes; the two ends of the arc-shaped protrusions are symmetrically fixedly provided with extension plates that are parallel to the surface of the substrate; and the end of the extension plate away from the arc-shaped protrusions is provided with a first blocking wing for blocking adhesive.

[0013] The present invention is further configured such that: the second adhesive applicator includes a connecting rod fixedly connected to the dispensing cavity; an adhesive applicator panel parallel to the plate is fixedly connected to one end of the connecting rod near the plate; an arc-shaped adhesive guide plate tangentially arranged to the adhesive applicator panel is fixedly provided at one end of the adhesive applicator panel near the dispensing cavity; and second blocking wings for blocking adhesive are provided at both ends of the adhesive applicator panel along the adhesive application direction.

[0014] The present invention is further configured such that: the glue recycling assembly includes a recycling pipe fixedly connected to the connecting rod, the end of the recycling pipe near the board is arc-shaped and faces the arc-shaped glue guide plate, the recycling pipe is connected to the glue inlet pipe, and the recycling pipe is fixedly provided with a vacuum pump for reducing the air pressure of the recycling pipe so that the glue can rise and be recycled along the recycling pipe and a glue filter for filtering the recycled glue along the glue recycling direction, and the end of the recycling pipe near the board is fixedly provided with an arc-shaped recycling guide plate that is concave downward so that the glue can smoothly enter the recycling pipe.

[0015] The second objective of this invention is to provide an automatic glue application method, which has the advantages of good glue application effect, high glue application efficiency, and reduced glue waste.

[0016] The above-mentioned technical objective of this invention is achieved through the following technical solution: an automatic glue application method, using a high-efficiency glue application machine with good application effect as described in any of the above technical solutions; comprising:

[0017] Step 1: The sheet material is conveyed along the sheet material conveyor line to the gluing station, where the positioning and fixing components position and fix the sheet material.

[0018] Step 2: Adjust the adjustment component according to the glue application requirements of the board to control the glue dispensing amount and speed of the dispensing component. The transfer component drives the dispensing component to dispense glue on the board along the set path.

[0019] Step 3: During the dispensing process of the transfer component driving the dispensing component, the first adhesive applicator performs preliminary application of adhesive on the dispensing path to ensure that the adhesive is evenly dispersed to both sides of the dispensing path as the center.

[0020] Step 4: The second adhesive applicator further applies adhesive, forming a uniform adhesive layer on the surface of the board. At the same time, as the second adhesive applicator moves along the dispensing path, excess adhesive enters the adhesive recycling component through the surface of the second adhesive applicator for recycling.

[0021] In summary, the present invention has the following beneficial effects:

[0022] 1. A sliding plate is installed inside the dispensing chamber, dividing it into a glue storage chamber and an air pressure regulating chamber. An air pressure pump is installed on the dispensing chamber. In the initial state, due to the sliding plate and the gravity of the glue, the glue drips onto the board through the dispensing hole. When it is necessary to control the dispensing amount and speed, the air pressure in the air pressure regulating chamber is adjusted by the air pressure pump, thereby controlling the pressure of the sliding plate on the glue in the glue storage chamber, thus controlling the dispensing amount and speed. The structure is simple, avoids the influence of the board surface on the dispensing process, and improves the coating effect. Additionally, an air pressure pump is installed on the dispensing chamber... The system includes a socket that corresponds to and communicates with each dispensing hole, and a sealing plate is installed inside the socket. This allows the system to meet the needs of localized glue application on the board while also preventing glue waste caused by repeated dispensing when the length of the board is not proportional to the length of the dispensing cavity. A spherical throat with a spring connected to the dispensing hole is installed at the center of the dispensing hole. When the pressure in the air pressure regulating chamber increases, the spring expands through the glue, preventing the glue in the dispensing hole from falling instantly and causing local glue to exceed the standard dispensing amount, thus affecting the glue application effect.

[0023] 2. A first adhesive applicator and a second adhesive applicator are respectively set at both ends of the dispensing cavity along the dispensing direction. The first adhesive applicator has an arc-shaped protrusion on the adhesive base plate corresponding to the dispensing hole, and an extension plate and a first blocking wing are respectively set on both sides. The arc-shaped protrusion squeezes the adhesive to both sides. After squeezing, the adhesive enters between the extension plate and the first blocking wing, so that the adhesive is initially evenly distributed. This makes it easier for the adhesive applicator of the second adhesive applicator to apply adhesive further, thereby forming a uniform adhesive layer on the surface of the board, improving the coating effect, avoiding the need for re-coating, and improving the coating efficiency. At the same time, after further coating, the excess adhesive enters the recycling pipe of the adhesive recycling component through the arc-shaped adhesive guide plate. The vacuum pump reduces the air pressure in the recycling pipe, so that the recycled adhesive can rise along the recycling pipe and enter the adhesive filter. After filtration, the adhesive is pressed into the glue inlet pipe by the subsequent adhesive, thus completing the recycling of adhesive and reducing adhesive waste. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the overall structure of this embodiment;

[0025] Figure 2 yes Figure 1 Enlarged schematic diagram of part A;

[0026] Figure 3 yes Figure 2 Enlarged diagram of part B;

[0027] Figure 4 yes Figure 2 Enlarged schematic diagram of part C;

[0028] Figure 5 This is a front view of the structure of the first adhesive application plate in this embodiment.

[0029] Reference numerals: 1. Sheet conveyor line; 3. Transfer assembly; 31. First lead screw sliding assembly; 32. Second lead screw sliding assembly; 33. Telescopic assembly; 4. Dispensing assembly; 41. Dispensing chamber; 42. Inlet pipe; 43. Dispensing hole; 44. Sliding plate; 45. Glue storage chamber; 46. Glue inlet; 47. Elastic bellows; 48. Insertion hole; 49. Sealing plate; 410. Throat; 411. Spring; 5. Adjustment Components; 51. Air pressure regulating chamber; 52. Air pressure pump; 6. First adhesive applicator; 61. Adhesive applicator base plate; 62. Arc-shaped protrusion; 63. Extension plate; 64. First blocking wing; 7. Second adhesive applicator; 71. Connecting rod; 72. Adhesive applicator panel; 73. Arc-shaped adhesive guide plate; 74. Second blocking wing; 8. Adhesive recycling assembly; 81. Recycling pipe; 82. Vacuum pump; 83. Adhesive filter; 84. Arc-shaped recycling guide plate. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figures 1 to 5 A high-efficiency glue applicator with good coating effect includes a sheet material conveyor line 1 fixed on a horizontal plane. Positioning and fixing components for positioning and fixing the sheet material are fixedly connected to the sheet material conveyor line 1. Four sets of positioning and fixing components are fixedly installed at both ends of the sheet material conveyor line 1 along the sheet material conveying direction and on both sides perpendicular to the sheet material conveying direction. Each positioning and fixing component includes a rotary telescopic cylinder fixed to the sheet material conveyor line 1 and a positioning block fixedly connected to the telescopic end of the rotary telescopic cylinder for abutting against the end face of the sheet material to achieve correct positioning. The positioning and fixing components are well known to those skilled in the art, and the attached drawings are omitted. A transfer component 3 is fixedly installed on the sheet material conveyor line 1 based on a mounting frame. A dispensing assembly 4 is fixedly connected to the dispensing assembly 3. An adjusting assembly 5 for controlling the dispensing amount and speed is fixedly connected to the dispensing assembly 4. At the same time, a first smearing plate 6 for initial smearing and a second smearing plate 7 for further smearing are symmetrically fixedly connected to both ends of the dispensing assembly 4 along the dispensing direction. A glue recovery assembly 8 is fixedly provided between the first smearing plate 6 and the second smearing plate 7, facing the second smearing plate 7, for collecting and recovering excess glue. There are two sets of the first smearing plate 6, the second smearing plate 7 and the glue recovery assembly 8, which are symmetrically arranged at both ends of the dispensing assembly 4, thereby adapting to the needs of bidirectional dispensing and smearing, avoiding the need to apply glue in only one direction, and improving the efficiency of glue application.

[0033] refer to Figure 1 Specifically, the transfer assembly 3 includes a first lead screw sliding assembly 31 fixedly mounted on the mounting frame along the board conveying direction. A second lead screw sliding assembly 32, arranged perpendicular to the board conveying direction, is fixedly connected to the sliding end of the first lead screw sliding assembly 31. Both the first lead screw sliding assembly 31 and the second lead screw sliding assembly 32 are technologies well known to those skilled in the art and will not be described in detail here. A telescopic assembly 33, arranged vertically, is fixedly mounted at the sliding end of the second lead screw sliding assembly 32. The telescopic assembly 33 is used to adjust the distance between the dispensing assembly 4 and the board surface. In this embodiment, the telescopic assembly 33 uses a telescopic electric cylinder to precisely adjust the distance between the dispensing assembly 4 and the board surface. However, it is not limited to using a telescopic electric cylinder; a lead screw sliding assembly can also be used to precisely adjust the distance between the dispensing assembly 4 and the board surface.

[0034] refer to Figure 2 and Figure 3 Specifically, the dispensing assembly 4 includes a dispensing cavity 41 fixedly connected to the telescopic end of the telescopic assembly 33 and extending along the board conveying direction. An inlet pipe 42 is connected to the top of the dispensing cavity 41, and adhesive enters the dispensing cavity 41 through the inlet pipe 42. A plurality of dispensing holes 43 are evenly distributed along the board conveying direction on the bottom wall of the dispensing cavity 41, while only one row of dispensing holes 43 is provided along the bottom of the dispensing cavity 41 to avoid interference during dispensing. During dispensing, the transfer assembly 3 drives the dispensing assembly 4 along a path perpendicular to the board conveying direction. The glue is dispensed in a vertical direction. A sliding plate 44 is slidably connected in the dispensing cavity 41. A glue storage cavity 45 is formed between the sliding plate 44 and the bottom wall of the dispensing cavity 41 for storing glue. A glue inlet 46 is provided on the sliding plate 44. The glue drips onto the board along the dispensing hole 43 by the sliding plate 44 and the gravity of the glue. The glue inlet tube 42 and the glue inlet 46 are connected by an elastic corrugated tube 47. The elastic corrugated tube 47 can fold up and down with the up and down movement of the sliding plate 44 to prevent glue leakage.

[0035] refer to Figure 2 and Figure 3Specifically, a number of insertion holes 48, corresponding one-to-one with and communicating with the dispensing holes 43, are provided on the side end of the bottom cavity wall of the dispensing chamber 41 along the board conveying direction. Sealing plates 49 for sealing the dispensing holes 43 are inserted into the insertion holes 48. To avoid multiple dispensings on the same area of ​​the board or situations where some areas of the board do not require glue application, the number and arrangement of the dispensing holes 43 are adjusted based on the sealing plates 49 to adapt to the glue application needs of boards of different sizes and glue application locations. This avoids the need for custom dispensing chambers 41, which would increase glue application costs, and thus adapts to... While meeting the need for localized gluing of the board, the system also avoids glue waste caused by repeated gluing when the length of the board is not proportional to the length of the gluing cavity 41. This is achieved by sealing part of the gluing hole 43. A spherical throat 410 is provided at the center of the gluing hole 43. A set of spring pieces 411 connected to the gluing hole 43 are symmetrically fixed on the throat 410. When the pressure in the air pressure regulating cavity 51 increases, the spring pieces 411 expand through the glue, thus preventing the glue in the gluing hole 43 from falling instantly and causing the local glue to exceed the standard gluing amount, thereby affecting the gluing effect. In this embodiment, the insertion hole 48 is located at the upper part of the throat 410, thereby preventing the spring pieces 411 from being in a long-term expanded state when the corresponding gluing hole 43 is not in use, which would affect the normal use of the spring pieces 411.

[0036] refer to Figure 2 and Figure 3 Specifically, the adjustment component 5 includes an air pressure regulating chamber 51 disposed between the sliding plate 44 and the top wall of the dispensing chamber 41, and several air pressure pumps 52 fixedly connected to and communicating with the air pressure regulating chamber 51. The air pressure pumps 52 adjust the pressure exerted by the sliding plate 44 on the glue storage chamber 45 by adjusting the air pressure in the air pressure regulating chamber 51, thereby controlling the dispensing amount and dispensing speed. When it is necessary to control the dispensing amount and dispensing speed, the air pressure in the air pressure regulating chamber 51 is adjusted by the air pressure pumps 52 to control the pressure exerted by the sliding plate 44 on the glue in the glue storage chamber 45, thereby controlling the dispensing amount and dispensing speed. The structure is simple, avoids the influence of the board surface on the dispensing process, and improves the coating effect.

[0037] refer to Figure 2 and Figure 5Specifically, the first adhesive applicator 6 includes an adhesive applicator base plate 61 fixedly connected to the dispensing cavity 41. At one end of the adhesive applicator base plate 61 near the plate, there are several arc-shaped protrusions 62 that are uniformly arranged along the plate conveying direction and are corresponding to the dispensing holes 43 and protrude downwards. At the two ends of the arc-shaped protrusions 62, there are symmetrically fixed extension plates 63 that are parallel to the plate surface. At one end of the extension plate 63 away from the arc-shaped protrusions 62, there is a first blocking wing 64 for blocking the adhesive. The arc-shaped protrusions 62 squeeze the adhesive to both sides. After squeezing, the adhesive enters between the extension plate 63 and the first blocking wing 64, so that the adhesive is initially evenly distributed, which makes it easier for the adhesive applicator panel 72 of the second adhesive applicator 7 to further apply adhesive. In this embodiment, the distance between the bottom of the arc-shaped protrusion 62 and the surface of the board is no greater than half of the expected glue coating thickness, and the distance between the surface of the extension plate 63 and the surface of the board is no greater than the expected glue coating thickness. This ensures that the glue thickness after the initial glue application by the first glue application plate 6 is close to the expected glue coating thickness, thereby improving the glue application effect of the second glue application plate 7.

[0038] refer to Figure 2 and Figure 4 Specifically, the second adhesive applicator 7 includes a connecting rod 71 fixedly connected to the dispensing cavity 41. An adhesive applicator panel 72, parallel to the board material, is fixedly connected to the end of the connecting rod 71 near the board material. The distance between the adhesive applicator panel 72 and the board surface is equal to the expected adhesive thickness. An arc-shaped guide plate 73, tangentially arranged to the adhesive applicator panel 72, is fixedly provided at the end of the adhesive applicator panel 72 near the dispensing cavity 41. Second blocking wings 74 for blocking adhesive are provided at both ends of the adhesive applicator panel 72 along the adhesive application direction. After further adhesive application, excess adhesive enters the recycling pipe 81 of the adhesive recycling assembly 8 through the arc-shaped guide plate 73. The second blocking wings 74 allow adhesive to be squeezed onto other dispensing paths, thereby preventing adhesive from affecting the adhesive application process on other parallel dispensing paths. In this embodiment, the first blocking wing 64 and the second blocking wing 74 are evenly attached to the board surface.

[0039] refer to Figure 1 and Figure 2Specifically, the glue recycling assembly 8 includes a recycling pipe 81 fixedly connected to the connecting rod 71. The end of the recycling pipe 81 near the board is arc-shaped and faces the arc-shaped glue guide plate 73. The recycling pipe 81 is connected to the glue inlet pipe 42. A vacuum pump 82 is fixedly installed along the glue recycling direction to reduce the air pressure in the recycling pipe 81 so that the glue can rise and be recycled along the recycling pipe 81, and a glue filter 83 is fixedly installed to filter the recycled glue. An arc-shaped recycling guide plate 84 is fixedly installed at the end of the recycling pipe 81 near the board so that the glue can smoothly enter the recycling pipe 81. The vacuum pump 82 reduces the air pressure in the recycling pipe 81 so that the recycled glue can rise along the recycling pipe 81 and enter the glue filter 83. After being filtered, the glue is pressed into the glue inlet pipe 42 by the subsequent glue, thus completing the recycling of the glue and reducing glue waste.

[0040] Example 2:

[0041] An automated adhesive application method, using a high-efficiency adhesive applicator with good application effect as shown in Example 1; includes:

[0042] Step 1: The sheet material is conveyed along sheet material conveyor line 1 to the glue application station, where the positioning and fixing components position and fix the sheet material.

[0043] Step 2: Adjust the adjusting component 5 according to the glue application requirements of the board to control the glue application amount and speed of the dispensing component 4. The transfer component 3 drives the dispensing component 4 to apply glue along the set path on the board.

[0044] Step 3: During the dispensing process of the transfer component 3 driving the dispensing component 4, the first adhesive applicator 6 performs preliminary application of adhesive on the dispensing path so that the adhesive is evenly dispersed to both sides with the dispensing path as the center.

[0045] Step 4: The second adhesive applicator 7 further applies adhesive, forming a uniform adhesive layer on the surface of the board. At the same time, as the second adhesive applicator 7 moves along the dispensing path, excess adhesive enters the adhesive recycling component 8 through the surface of the second adhesive applicator 7 for recycling.

[0046] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make inventive modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A high-efficiency glue applicator with good coating effect, comprising a sheet material conveying line (1), wherein a positioning and fixing component for positioning and fixing the sheet material is fixedly connected to the sheet material conveying line (1); characterized in that, The sheet material conveying line (1) is fixedly provided with a transfer assembly (3) based on the mounting frame. A dispensing assembly (4) is fixedly connected to the transfer assembly (3). An adjustment assembly (5) for controlling the dispensing amount and dispensing speed is fixedly connected to the dispensing assembly (4). A first dispensing plate (6) for initial dispensing and a second dispensing plate (7) for further dispensing are symmetrically fixedly connected at both ends of the dispensing direction of the dispensing assembly (4). A glue recycling assembly (8) for collecting and recycling excess glue is fixedly provided between the first dispensing plate (6) and the second dispensing plate (7) and is positioned towards the second dispensing plate (7). The dispensing assembly (4) includes a dispensing cavity (41) fixedly connected to the telescopic end of the telescopic assembly (33) and extending along the board conveying direction. The top of the dispensing cavity (41) is connected to an inlet pipe (42). The bottom wall of the dispensing cavity (41) is evenly provided with a plurality of dispensing holes (43) along the board conveying direction. A sliding plate (44) is slidably connected in the vertical direction inside the dispensing cavity (41). A glue storage cavity (45) for storing glue is formed between the sliding plate (44) and the bottom wall of the dispensing cavity (41). An inlet (46) is provided on the sliding plate (44). The inlet pipe (42) and the inlet (46) are connected based on an elastic corrugated pipe (47). The bottom wall of the dispensing cavity (41) has several insertion holes (48) that correspond one-to-one with the dispensing holes (43) and communicate with the dispensing holes (43) along the board conveying direction. A sealing plate (49) for sealing the dispensing holes (43) is inserted into the insertion hole (48). The number and arrangement order of the dispensing holes (43) can be adjusted based on the sealing plate (49) to meet the dispensing needs of boards of different sizes and different dispensing positions. The dispensing hole (43) has a spherical throat (410) at its center, and a set of spring pieces (411) connected to the dispensing hole (43) are symmetrically fixed on the throat (410). The first adhesive applicator (6) includes an adhesive applicator substrate (61) fixedly connected to the dispensing cavity (41). The adhesive applicator substrate (61) has a plurality of arc-shaped protrusions (62) that are uniformly arranged and protrude downward along the conveying direction of the plate along the plate conveying direction. The two ends of the arc-shaped protrusions (62) are symmetrically fixedly provided with extension plates (63) that are parallel to the surface of the plate. The end of the extension plate (63) away from the arc-shaped protrusions (62) is provided with a first blocking wing (64) for blocking the adhesive. The second adhesive applicator (7) includes a connecting rod (71) fixedly connected to the dispensing cavity (41). The connecting rod (71) is fixedly connected to an adhesive applicator panel (72) arranged parallel to the board at one end. An arc-shaped adhesive guide plate (73) is fixedly provided at one end of the adhesive applicator panel (72) near the dispensing cavity (41). The adhesive applicator panel (72) is provided with second blocking wings (74) for blocking adhesive at both ends along the adhesive application direction. The glue recycling assembly (8) includes a recycling tube (81) fixedly connected to the connecting rod (71). The end of the recycling tube (81) near the board is arc-shaped and faces the arc-shaped glue guide plate (73). The recycling tube (81) is connected to the glue inlet tube (42). The recycling tube (81) is fixedly equipped with a vacuum pump (82) for reducing the air pressure of the recycling tube (81) so that the glue can rise and be recycled along the recycling tube (81) and a glue filter (83) for filtering the recycled glue. The end of the recycling tube (81) near the board is fixedly equipped with an arc-shaped recycling guide plate (84) that is concave downward so that the glue can smoothly enter the recycling tube (81).

2. The high-efficiency glue applicator with good coating effect according to claim 1, characterized in that, The transfer assembly (3) includes a first lead screw sliding assembly (31) fixedly mounted on the mounting frame along the plate conveying direction. The sliding end of the first lead screw sliding assembly (31) is fixedly connected to a second lead screw sliding assembly (32) arranged perpendicular to the plate conveying direction. The sliding end of the second lead screw sliding assembly (32) is fixedly provided with a telescopic assembly (33) arranged in the vertical direction.

3. The high-efficiency glue applicator with good coating effect according to claim 1, characterized in that, The adjustment assembly (5) includes an air pressure adjustment chamber (51) disposed between the sliding plate (44) and the top cavity wall of the dispensing cavity (41), and a plurality of air pressure pumps (52) fixedly connected to the dispensing cavity (41) and communicating with the air pressure adjustment chamber (51). The air pressure pumps (52) adjust the pressure of the sliding plate (44) acting on the glue storage cavity (45) by adjusting the air pressure in the air pressure adjustment chamber (51), thereby controlling the dispensing amount and dispensing speed.

4. An automatic glue application method, using a high-efficiency glue applicator with good application effect as described in any one of claims 1-3; characterized in that, include: Step 1: The board is conveyed along the board conveyor line (1) to the glue application station, and the positioning and fixing components are used to position and fix the board. Step 2: Adjust the adjustment component (5) according to the glue application requirements of the board to control the glue application amount and speed of the glue application component (4). The transfer component (3) drives the glue application component (4) to apply glue along the set path on the board. Step 3: During the dispensing process of the transfer component (3) driving the dispensing component (4), the first adhesive applicator (6) performs preliminary application of adhesive on the dispensing path so that the adhesive is evenly dispersed to both sides with the dispensing path as the center. Step 4: The second adhesive applicator (7) further applies adhesive. The second adhesive applicator (7) forms a uniform adhesive layer on the surface of the board. At the same time, as the second adhesive applicator (7) moves along the dispensing path, excess adhesive enters the adhesive recycling component (8) through the surface of the second adhesive applicator (7) for recycling.

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