An automatic glue dispenser

Abstract

The application relates to the field of industrial electrical technology, and discloses an automatic glue coating machine, which comprises a glue coating cylinder, a lower glue coating cylinder fixedly connected below the glue coating cylinder, a glue nozzle fixedly connected to the bottom of the lower glue coating cylinder, a gas cylinder fixedly connected to the surface of the glue coating cylinder, a flange connecting piece fixedly connected to the top of the glue coating cylinder, a glue storage barrel fixedly connected to the surface of the lower glue coating cylinder, a cleaning assembly arranged in the glue coating cylinder and used for cleaning the lower glue coating cylinder and the glue nozzle, and a quality keeping assembly arranged on the surface of the glue coating cylinder and used for keeping the viscosity of glue uniform. The glue nozzle is extruded by a bidirectional cleaning plug, so that the glue in the glue nozzle can be effectively discharged after coating, the glue nozzle blockage problem is effectively solved, the glue coating process is more continuous and stable, the production interruption and the time cost of manual cleaning caused by blockage are reduced, the structure avoids the problem that glue residues cause blockage again in the next use, and the quality consistency of each coating is ensured.

Description

Technical Field

[0001] This invention relates to the field of industrial electrical technology, specifically to an automatic glue applicator. Background Technology

[0002] Automatic glue applicators, also known as glue coating machines, glue dispensing machines, or glue applicators, are automated machines that control fluids and apply them dropwise or in the form of glue to the surface or interior of a product. They can perform three-dimensional and four-dimensional path dispensing and can quickly apply dots, lines, circles, and various irregular shapes on product surfaces, outer walls, vertical surfaces, gaps, spherical surfaces, and curved surfaces.

[0003] With the continuous development of technology, existing automatic glue dispensing machines have gradually revealed some problems. The nozzle of these machines is frequently clogged with glue. The main reason is the glue's curing characteristics. Glue, upon contact with air, especially under certain environmental conditions such as temperature, humidity, and the material of the contact surface, will rapidly undergo a curing reaction. During the dispensing process, the nozzle, as the glue outlet, is directly affected by changes in temperature and pressure, which in turn affect the glue's flowability. When the glue remains inside the nozzle for too long, it begins to solidify, causing a blockage. Currently, clogged nozzles on existing glue dispensing machines often rely on manual cleaning, but this method has many drawbacks. First, manual cleaning consumes a significant amount of time and labor costs, as the internal structure of the nozzle is often... The process is quite complex. Cleaning requires meticulous attention to every corner to ensure no glue residue remains, increasing the difficulty of manual cleaning and reducing production efficiency. Secondly, manual cleaning is often ineffective. Due to limitations in human vision and touch, it's difficult to completely clean the nozzle, causing residual glue to clog it again during subsequent uses, affecting dispensing quality and efficiency. Furthermore, manual cleaning poses safety risks. Operators directly contact the glue and nozzle during cleaning, and some glues are toxic or irritating, potentially harming their health. Additionally, accidental splashing of glue onto skin or eyes due to operator error can cause injury.

[0004] Meanwhile, because existing automatic glue applicators are frequently used in scenarios such as bonding large items, a common problem exists during glue application: the first layer of glue cures upon contact with air, while the last layer remains moist. This inconsistency in glue layers affects the product's adhesion. Since the first layer of glue has partially cured, its adhesion gradually decreases over time, while the last layer, still moist, has stronger adhesion. Therefore, when items are bonded, the glue layers at different locations have different adhesion strengths, leading to weak bonding or even delamination. This not only affects the product's appearance quality but also reduces its lifespan and safety. Furthermore, inconsistent glue layers affect production efficiency. Inconsistent glue layers require additional time and manpower for adjustment and processing, such as reapplying glue or sanding the cured glue layer to ensure consistency. These additional operations further increase production costs.

[0005] Therefore, an automatic glue applicator is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic glue applicator to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic glue applicator, comprising an upper glue cylinder, a lower glue cylinder fixedly connected to the lower part of the upper glue cylinder, a glue nozzle fixedly connected to the bottom of the lower glue cylinder, a cylinder fixedly connected to the surface of the upper glue cylinder, a flange connector fixedly connected to the top of the upper glue cylinder, a glue storage tank fixedly connected to the surface of the lower glue cylinder, a cleaning component for cleaning the lower glue cylinder and the glue nozzle inside the upper glue cylinder, and a quality preservation component for maintaining uniform glue viscosity on the surface of the upper glue cylinder;

[0008] The cleaning assembly includes an annular hollow barrel, which is rotatably connected to the inside of the upper glue cylinder and located at the top of the lower glue cylinder. A bidirectional cleaning plug is slidably connected inside the annular hollow barrel, and a connecting frame is fixedly connected to the top of the lower glue cylinder and located inside the upper glue cylinder.

[0009] The quality preservation component includes a stabilizing rod, which is symmetrically and fixedly connected to the surface of the telescopic shaft of the cylinder. A first rack and pinion connecting rod is fixedly connected to the surface of each stabilizing rod. A first sliding frame is symmetrically and fixedly connected to the surfaces of the upper and lower rubber cylinders. The first rack and pinion connecting rod is slidably connected to the inside of the first sliding frame.

[0010] Preferably, the cleaning assembly further includes a spiral groove, which is formed on the surface of the annular hollow barrel and extends vertically to the surface of the lower rubber cylinder. An abutment rod is fixedly connected to the surface of the telescopic shaft of the cylinder, and the abutment rod is slidably connected to the inside of the spiral groove. The surface of the annular hollow barrel is symmetrically provided with arc-shaped grooves.

[0011] Preferably, the preservation component further includes a rotating gear symmetrically rotatably connected to the surface of the upper glue cylinder. A second sliding frame is symmetrically fixedly connected to the side of the upper glue cylinder away from the first sliding frame. A second rack and pinion is slidably connected to the surface of the second sliding frame. A sliding rheostat is fixedly connected to the surface of the upper and lower glue cylinders away from the glue storage tank. A conductive connecting rod is fixedly connected to the surface of the sliding rheostat. Terminals are symmetrically fixedly connected to the surface of the sliding rheostat. A conductive sheet is fixedly connected to the surface of the second rack and pinion. A rubber block is fixedly connected to the bottom of the conductive sheet. The rubber block is slidably connected to the surface of the conductive connecting rod. A resistance wire is wound around the surface of the sliding rheostat.

[0012] Preferably, the flange connector is driven to be mounted on an external mobile device, the cylinder is connected to an external air pipe, the glue storage tank has a built-in heating plate and a solenoid valve, and the external mobile device, cylinder, heating plate and solenoid valve are all electrically controlled to start and stop by an external controller.

[0013] Preferably, the upper and lower glue tubes have built-in power supplies, the sliding rheostat is electrically connected to the power supply, the glue nozzle has a built-in heater, the heater is electrically connected to the sliding rheostat, the power supply input line is connected to the top of the sliding rheostat, the built-in power supply output line is connected to the terminal block located below, and the rubber block is made of rubber, which serves to prevent the rubber block from carrying current.

[0014] Preferably, both the first rack connecting rod and the second rack connecting rod mesh with a rotating gear, and the number of teeth of the second rack connecting rod is less than the number of teeth of the first rack connecting rod, which enables the second rack connecting rod to move a shorter distance than the first rack connecting rod.

[0015] Preferably, the shape of the inner wall of the spiral groove is adapted to the shape of the abutment rod, and the shape of the bidirectional cleaning plug is adapted to the shape of the nozzle, which achieves the function of shape adaptation and tight fit.

[0016] Preferably, the bidirectional cleaning plug is made of polytetrafluoroethylene, which serves to prevent adhesive adhesion due to the material properties of the bidirectional cleaning plug.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By squeezing the nozzle with a bidirectional cleaning plug, the glue inside the nozzle can be effectively discharged after application, especially the glue that is about to solidify. This structure minimizes the problem of glue solidification caused by prolonged residence time inside the nozzle, thus reducing the risk of nozzle clogging. Secondly, since the nozzle clogging problem is effectively solved, the glue application process is more continuous and stable, and the production interruption and manual cleaning time costs caused by clogging are reduced. In addition, this structure avoids the problem of glue residue causing re-clogging in the next use, and also ensures the consistency of glue application quality each time, thereby improving the product qualification rate. Since the need for manual cleaning is reduced, operators do not need to directly contact the glue and nozzle, further reducing the safety risks such as glue splashing caused by improper operation.

[0019] 2. The movement of the rubber block drives the conductive sheet, which in turn changes the resistance of the wire connected to the circuit. This change in resistance controls the efficiency of the heater built into the nozzle. As the dispensing process continues, the internal temperature of the nozzle gradually normalizes. The first layer of adhesive is applied at a high temperature, while the subsequent layers gradually decrease in temperature. After dispensing is complete, the first layer cools down to match the temperature of the subsequent layers, ensuring uniform viscosity. This structure significantly improves the adhesion of the product. Because the adhesive viscosity remains consistent throughout the dispensing process, the adhesive layer at different locations has the same bonding strength, preventing weak adhesion and delamination. This further enhances the product's appearance, extends its lifespan, and improves safety. Furthermore, the guaranteed consistency of the adhesive layer eliminates the need for additional time and manpower for adjustments and treatments, such as reapplying adhesive or sanding the cured adhesive layer, thus improving overall production efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a right-side perspective three-dimensional schematic diagram of the main structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a three-dimensional cross-sectional view of the main structure of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle;

[0025] Figure 6 For the present invention Figure 4 Enlarged view at point C;

[0026] Figure 7 This is a cross-sectional perspective view of the cleaning component of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle.

[0028] In the picture:

[0029] 1. Upper glue cylinder; 2. Lower glue cylinder; 3. Glue nozzle; 4. Cylinder; 5. Flange connector; 6. Glue storage tank;

[0030] The cleaning components include: 71. Annular hollow barrel; 72. Two-way cleaning plug; 73. Connecting frame; 74. Spiral groove; 75. Abutment rod; 76. Arc groove;

[0031] The quality assurance components include: 81, stabilizing rod; 82, first rack and pinion connecting rod; 83, first sliding frame; 84, rotating gear; 85, second sliding frame; 86, second rack and pinion connecting rod; 87, sliding rheostat; 88, conductive connecting rod; 89, terminal block; 810, rubber block; 811, conductive sheet; 812, resistance wire. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0033] Please see Figures 1 to 8 As shown, the present invention provides an embodiment:

[0034] An automatic glue applicator includes an upper glue cylinder 1, a lower glue cylinder 2, and a built-in power supply. A sliding rheostat 87 is electrically connected to the power supply. A glue nozzle 3 has a built-in heater, which is electrically connected to the sliding rheostat 87. The power input line is connected to the top of the sliding rheostat 87, and the power output line is connected to a terminal 89 located below. A rubber block 810, made of rubber, serves to prevent current transmission. The lower glue cylinder 2 is fixedly connected to the bottom of the upper glue cylinder 1, and the glue nozzle 3 is fixedly connected to the bottom of the lower glue cylinder 2. A cylinder 4 is fixedly connected to the surface of the upper glue cylinder 1. A flange connector 5 is fixedly connected to the top of the upper glue cylinder 1. The flange connector 5 is driven to be installed on the external mobile device. An air pipe is connected to the cylinder 4. A heating plate and a solenoid valve are built into the glue storage tank 6. The external mobile device, cylinder 4, heating plate and solenoid valve are all electrically controlled to start and stop by an external controller. A glue storage tank 6 is fixedly connected to the surface of the lower glue cylinder 2. A cleaning component for cleaning the lower glue cylinder 2 and the glue nozzle 3 is set inside the upper glue cylinder 1. A quality preservation component for maintaining the uniform viscosity of the glue is set on the surface of the upper glue cylinder 1.

[0035] The cleaning assembly includes an annular hollow barrel 71, which is rotatably connected to the inside of the upper glue cylinder 1 and located at the top of the lower glue cylinder 2. A bidirectional cleaning plug 72 is slidably connected inside the annular hollow barrel 71. The bidirectional cleaning plug 72 is made of polytetrafluoroethylene and serves to prevent adhesive from sticking due to the material properties of the bidirectional cleaning plug 72. A connecting frame 73 is fixedly connected to the top of the lower glue cylinder 2 and located inside the upper glue cylinder 1.

[0036] The quality assurance component includes a stabilizing rod 81, which is symmetrically fixedly connected to the surface of the telescopic shaft of the cylinder 4. A first rack and pinion rod 82 is fixedly connected to the surface of the stabilizing rod 81. Both the first rack and pinion rod 82 and the second rack and pinion rod 86 mesh with the rotating gear 84. The number of teeth of the second rack and pinion rod 86 is less than the number of teeth of the first rack and pinion rod 82, which makes the moving distance of the second rack and pinion rod 86 less than the moving distance of the first rack and pinion rod 82. A first sliding frame 83 is symmetrically fixedly connected to the surface of the upper glue cylinder 1 and the lower glue cylinder 2. The first rack and pinion rod 82 is slidably connected to the inside of the first sliding frame 83.

[0037] The cleaning assembly also includes a spiral groove 74, which is formed on the surface of the annular hollow barrel 71 and extends vertically to the surface of the lower glue cylinder 2. The shape of the inner wall of the spiral groove 74 is adapted to the shape of the abutment rod 75, and the shape of the bidirectional cleaning plug 72 is adapted to the shape of the glue nozzle 3, thus achieving shape adaptation and tight fit. The abutment rod 75 is fixedly connected to the surface of the telescopic shaft of the cylinder 4, and the abutment rod 75 is slidably connected to the inside of the spiral groove 74. The surface of the annular hollow barrel 71 is symmetrically provided with arc-shaped grooves 76.

[0038] The quality assurance component also includes a rotating gear 84, which is symmetrically rotatably connected to the surface of the upper glue cylinder 1. A second sliding frame 85 is symmetrically fixedly connected to the side of the upper glue cylinder 1 away from the first sliding frame 83. A second rack and pinion rod 86 is slidably connected to the surface of the second sliding frame 85. A sliding rheostat 87 is fixedly connected to the surface of the upper glue cylinder 1 and the lower glue cylinder 2 away from the glue storage tank 6. A conductive connecting rod 88 is fixedly connected to the surface of the sliding rheostat 87. Terminals 89 are symmetrically fixedly connected to the surface of the sliding rheostat 87. A conductive sheet 811 is fixedly connected to the surface of the second rack and pinion rod 86. A rubber block 810 is fixedly connected to the bottom of the conductive sheet 811. The rubber block 810 is slidably connected to the surface of the conductive connecting rod 88. A resistance wire 812 is wound around the surface of the sliding rheostat 87.

[0039] The working principle of the present invention, based on the above implementation, is as follows:

[0040] The following is the initial state: the conductive sheet 811 is located at the bottom of the conductive connecting rod 88, the second rack connecting rod 86 is located at the bottom of the second sliding frame 85, the first rack connecting rod 82 is located at the top of the first sliding frame 83, the built-in solenoid valve of the glue storage tank 6 is in the closed state, the telescopic shaft of the cylinder 4 is in the minimum movement stroke, the bidirectional cleaning plug 72 is not in contact with the inner wall of the arc groove 76, the contact rod 75 is located at the top of the spiral groove 74, and the bidirectional cleaning plug 72 is located at the top of the connecting frame 73.

[0041] The following are the specific steps for operation:

[0042] The cleaning of nozzle 3 during the glue application process includes:

[0043] First, the operator manipulates the external controller, which then electrically controls the movement of the external mobile device and the activation of cylinder 4, solenoid valve, and heating plate.

[0044] like Figure 4 As shown, during the movement of the external mobile device, the flange connector 5 moves synchronously. At this time, the telescopic shaft of the cylinder 4 extends, and the telescopic shaft of the cylinder 4 gradually moves towards the nozzle 3 inside the glue storage tank 6. During this process, the solenoid valve has been activated and opened by the external controller. As the telescopic shaft of the cylinder 4 moves, the internal space of the glue storage tank 6 is gradually compressed. Under the combined action of the liquid's own weight, the characteristics of liquid flow, and air compression, the glue inside the glue storage tank 6 flows from the solenoid valve into the lower glue cylinder 2, and flows out from the lower glue cylinder 2 through the nozzle 3 onto the object being bonded.

[0045] like Figure 6As shown, at the same time, as the telescopic shaft of cylinder 4 extends, the extension of the telescopic shaft of cylinder 4 drives the abutment rod 75 to move synchronously, and the abutment rod 75 will move along the spiral groove 74. Through the shape of the spiral groove 74 and the radial force generated by friction, the abutment rod 75 will also drive the annular hollow barrel 71 to rotate when it moves toward the nozzle 3.

[0046] like Figures 4 to 8 As shown, when the glue in the glue storage tank 6 is consumed, the telescopic shaft of the cylinder 4 moves to its maximum stroke. At this time, the contact rod 75 moves to the end of the spiral groove 74 and enters the surface of the lower glue cylinder 2. At this time, the external controller will electrically control the external mobile device to move away from the workpiece to be bonded. Since the contact rod 75 moves to the surface of the lower glue cylinder 2 through the spiral groove 74, the contact rod 75 continuously drives the annular hollow barrel 71 to rotate during the movement of the contact rod 75. At this time, the annular hollow barrel 71 rotates ninety degrees. However, the bidirectional cleaning plug 72 does not rotate with the annular hollow barrel 71 due to the restriction of the connecting frame 73. The surface of the bidirectional cleaning plug 72 is... The surface no longer contacts the surface of the annular hollow barrel 71. During the rotation of the annular hollow barrel 71, the arc groove 76 begins to contact the surface of the bidirectional cleaning plug 72. Under the action of the concave shape of the arc groove 76, the bidirectional cleaning plug 72 begins to slide towards the bottom of the nozzle 3 under the combined action of its own weight and the shape of the arc groove 76. At this time, the bottom of the bidirectional cleaning plug 72 will rub and abut against the surfaces of the lower glue cylinder 2 and the nozzle 3. Due to the properties of the material of the bidirectional cleaning plug 72, the bidirectional cleaning plug 72 will push the residual and cured glue in the lower glue cylinder 2 and the nozzle 3 to the outside through the bottom of the nozzle 3, and the glue will not adhere to the bottom of the bidirectional cleaning plug 72.

[0047] Similarly, at this time, the operator needs to add glue to the glue storage tank 6. The operator will operate the external controller, which will electrically control the cylinder 4 to retract the telescopic shaft. At this time, compressed air is discharged from the exhaust port of the cylinder 4, forming a pressure difference. Under the action of the pressure difference, the telescopic shaft of the cylinder 4 will retract away from the glue nozzle 3. As can be seen from the above steps, when the telescopic shaft of the cylinder 4 extends towards the bottom of the glue nozzle 3, the abutment rod 75 will drive the annular hollow barrel 71 to rotate. Then, when the telescopic shaft of the cylinder 4 retracts away from the glue nozzle 3, the abutment rod 75 will drive the annular hollow barrel 71 to rotate in the opposite direction. At this time, the bidirectional cleaning plug 72 no longer contacts the inner wall of the arc groove 76, but returns to the initial state of contacting the top surface of the annular hollow barrel 71. As can be seen from the above steps, when the bidirectional cleaning plug 72 contacts the top of the annular hollow barrel 71, the bidirectional cleaning plug 72 will slide to the connecting frame 7. At the top of nozzle 3, the bottom of the further bidirectional cleaning plug 72 gradually moves away from nozzle 3. The bidirectional cleaning plug 72 squeezes nozzle 3, effectively expelling the glue inside nozzle 3 after application, especially the glue that is about to solidify. This structure minimizes the problem of glue solidification caused by prolonged residence time inside nozzle 3, thus reducing the risk of nozzle 3 clogging. Secondly, since the problem of nozzle 3 clogging is effectively solved, the glue application process is more continuous and stable, reducing production interruptions and manual cleaning time costs caused by clogging. In addition, this structure avoids the problem of glue residue causing clogging again in the next use, and also ensures the consistency of glue application quality each time, thereby improving the product qualification rate. Since the need for manual cleaning is reduced, operators do not need to directly contact glue and nozzle 3, further reducing the safety risks such as glue splashing caused by improper operation.

[0048] Maintaining consistent glue viscosity is one key aspect.

[0049] like Figure 2 As shown, when the telescopic shaft of cylinder 4 extends toward the nozzle 3, the telescopic shaft of cylinder 4 will drive the stabilizing rod 81 to move toward the nozzle 3 in sync. The stabilizing rod 81 will drive the first rack connecting rod 82 to slide toward the nozzle 3 on the first sliding frame 83. The first rack connecting rod 82 will drive the rotating gear 84 meshing with it to rotate. The rotating gear 84 will further drive the second rack connecting rod 86 to slide toward the side away from the nozzle 3 on the second sliding frame 85. At the same time, the end of the second rack connecting rod 86 near the sliding rheostat 87 will drive the conductive sheet 811 to slide on the surface of the sliding rheostat 87 toward the side away from the nozzle 3 through the rubber block 810.

[0050] like Figure 2 and Figure 3As shown, since the top of the conductive connecting rod 88 is the power input terminal and the terminal 89 located below is the power output terminal, further current will flow from the top of the conductive connecting rod 88 through the surface of the conductive connecting rod 88 to the conductive plate 811. With the conductive plate 811 as the dividing line, the current flows through the conductive plate 811 into the resistance wire 812 below the conductive plate 811. Finally, the current flows through the resistance wire 812 into the terminal 89 located below, and then returns to the built-in power supply, thus forming a closed loop.

[0051] As the second rack and pinion linkage 86 drives the conductive sheet 811 to gradually move away from the nozzle 3 via the rubber block 810, the number of resistance wires 812 below the conductive sheet 811 gradually increases, while the number of resistance wires 812 above the conductive sheet 811 gradually decreases. As the current flows through the resistance wires 812 for a longer length, their resistance value increases. The heater, which is electrically connected to the sliding rheostat 87, is affected by the large resistance value, and its working efficiency gradually decreases. Meanwhile, the temperature of the glue passing through the nozzle 3 gradually approaches the normal temperature.

[0052] Furthermore, the temperature of the first stream of glue flowing through nozzle 3 is the highest, while the temperature of subsequent streams of glue gradually approaches normal.

[0053] The adhesive previously applied to the workpiece gradually cools and returns to its normal temperature. Due to the adhesive's inherent property of decreasing viscosity at higher temperatures, the viscosity of the adhesive initially applied to the workpiece gradually increases and returns to normal. Subsequent applications of adhesive, due to the gradually decreasing heater power (even with negligible heating), reach a temperature similar to the previously cooled adhesive. With the temperature equal, the viscosity also equalizes. Furthermore, once all the adhesive is applied to the workpiece, the viscosity of all the adhesive tends to be equal. At this point, the next step of workpiece bonding can proceed. The movement of the rubber block 810 moves the conductive sheet 811, which in turn changes the resistance of the wire 812 connected to the circuit. This change in resistance controls the efficiency of the heater built into the nozzle 3. As the adhesive is applied... As the dispensing process proceeds, the internal temperature of nozzle 3 gradually returns to normal. The first layer of adhesive is applied at a high temperature, while the temperature of the subsequent layers gradually decreases. Once the dispensing is complete, the first layer cools down and its temperature matches that of the subsequent layers, ensuring uniform viscosity. This structure significantly improves the adhesive strength of the product. Because the adhesive viscosity remains consistent throughout the dispensing process, the adhesive layers at different locations have the same adhesive strength when the items are bonded, thus preventing weak adhesion and delamination. This further enhances the product's appearance quality, extends its lifespan, and improves safety. Furthermore, since the consistency of the adhesive layers is guaranteed, there is no need for additional time and manpower for adjustments and treatments, such as reapplying adhesive or sanding the cured adhesive layer, thereby improving overall production efficiency.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic glue applicator, comprising an upper glue cylinder (1), a lower glue cylinder (2) fixedly connected to the lower part of the upper glue cylinder (1), a glue nozzle (3) fixedly connected to the bottom of the lower glue cylinder (2), a cylinder (4) fixedly connected to the surface of the upper glue cylinder (1), a flange connector (5) fixedly connected to the top of the upper glue cylinder (1), and a glue storage tank (6) fixedly connected to the surface of the lower glue cylinder (2), characterized in that: The glue cylinder (1) is equipped with a cleaning component for cleaning the lower glue cylinder (2) and the glue nozzle (3), and the surface of the glue cylinder (1) is equipped with a quality preservation component for maintaining the uniform viscosity of the glue. The cleaning assembly includes an annular hollow barrel (71) and a spiral groove (74). The annular hollow barrel (71) is rotatably connected to the inside of the upper glue cylinder (1) and located at the top of the lower glue cylinder (2). A bidirectional cleaning plug (72) is slidably connected inside the annular hollow barrel (71). A connecting frame (73) is fixedly connected to the top of the lower glue cylinder (2) and located inside the upper glue cylinder (1). The spiral groove (74) is opened on the surface of the annular hollow barrel (71) and extends vertically to the surface of the lower rubber cylinder (2). The telescopic shaft of the cylinder (4) is fixedly connected to the contact rod (75), which is slidably connected to the inside of the spiral groove (74). The surface of the annular hollow barrel (71) is symmetrically provided with arc grooves (76). The quality assurance component includes a stabilizing rod (81) and a rotating gear (84). The stabilizing rod (81) is symmetrically fixedly connected to the surface of the telescopic shaft of the cylinder (4). The surface of the stabilizing rod (81) is fixedly connected to a first rack connecting rod (82). The surfaces of the upper rubber cylinder (1) and the lower rubber cylinder (2) are symmetrically fixedly connected to a first sliding frame (83). The first rack connecting rod (82) is slidably connected to the inside of the first sliding frame (83). Rotating gear (84) is symmetrically connected to the surface of upper glue cylinder (1). A second sliding frame (85) is symmetrically fixedly connected to the side of upper glue cylinder (1) away from the first sliding frame (83). A second rack and pinion rod (86) is slidably connected to the surface of the second sliding frame (85). A sliding rheostat (87) is fixedly connected to the side of upper glue cylinder (1) and lower glue cylinder (2) away from the glue storage tank (6). A conductive connecting rod (88) is fixedly connected to the surface of the sliding rheostat (87). A terminal post (89) is symmetrically fixedly connected to the surface of the sliding rheostat (87). A conductive sheet (811) is fixedly connected to the surface of the second rack and pinion rod (86). A rubber block (810) is fixedly connected to the bottom of the conductive sheet (811). The rubber block (810) is slidably connected to the surface of the conductive connecting rod (88). A resistance wire (812) is wound around the surface of the sliding rheostat (87). The upper glue tube (1) and lower glue tube (2) have built-in power supplies, the glue nozzle (3) has a built-in heater, the heater is electrically connected to the sliding rheostat (87), the power input line of the equipment is connected to the conductive connecting rod (88), and the power output line of the equipment is connected to the terminal block (89) located below.

2. An automatic glue applicator according to claim 1, characterized in that: The flange connector (5) is installed on the external mobile equipment. The cylinder (4) is connected to an air pipe. The glue storage tank (6) has a built-in heating plate and solenoid valve. The external mobile equipment, cylinder (4), heating plate and solenoid valve are all electrically controlled by the external controller to start and stop.

3. An automatic glue applicator according to claim 1, characterized in that: The rubber block (810) is made of rubber.

4. An automatic glue applicator according to claim 1, characterized in that: Both the first rack link (82) and the second rack link (86) mesh with the rotating gear (84), and the number of teeth of the second rack link (86) is less than the number of teeth of the first rack link (82).

5. An automatic glue applicator according to claim 1, characterized in that: The shape of the inner wall of the spiral groove (74) is adapted to the shape of the abutment rod (75), and the shape of the bidirectional cleaning plug (72) is adapted to the shape of the nozzle (3).

6. An automatic glue applicator according to claim 1, characterized in that: The material of the bidirectional cleaning plug (72) is polytetrafluoroethylene.

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