A glue dispenser

Abstract

The present application relates to the field of dispensing equipment, specifically is a kind of point gum machine, including skid platform assembly and glue storage tank, fixedly installed with support plate frame on skid platform assembly, support plate frame lower side is fixedly installed with outer glue outlet pipe, the point gum machine still includes inner glue outlet pipe being set on support plate frame by connecting mechanism, inner glue outlet pipe is rotatably and moves up and down in the inside of outer glue outlet pipe, glue storage tank is communicated with the upper portion of the inner cavity of outer glue outlet pipe by conduit, the present application is moved up and down by control driving rod using connecting mechanism, to drive inner glue outlet pipe synchronous up and down movement, when inner glue outlet pipe is extended to the lower portion of outer glue outlet pipe, glue is discharged from the lower end of inner glue outlet pipe with small flow, when inner glue outlet pipe is completely retracted to the inside of outer glue outlet pipe, glue is discharged from the lower end of outer glue outlet pipe with large flow, and then automatically, quickly switch glue flow in dispensing process, effectively adapt to the different needs of workpiece different regions for glue output.

Description

Technical Field

[0001] This invention relates to the field of dispensing equipment, specifically a dispensing machine. Background Technology

[0002] A dispensing machine is an automated device widely used in fields such as electronics manufacturing, semiconductor packaging, and medical devices. Its main function is to perform precise and controllable fluid dispensing operations on workpieces. A typical dispensing machine includes a slide assembly, a glue tank, a dispensing tube, and its drive control system. The slide assembly is responsible for moving the dispensing head in three-dimensional space to achieve precise positioning. The glue tank is used to store glue and delivers the glue to the dispensing tube through a conduit. The dispensing tube is responsible for coating the glue onto the surface of the workpiece at a certain flow rate and shape.

[0003] In actual production, there are often multiple locations on the same workpiece that require dispensing, and the amount of adhesive required for different locations is not the same. For example, some areas may require a large amount of adhesive for filling or encapsulation, while other delicate areas require a small flow rate and high precision dispensing operation to ensure dispensing quality and efficiency.

[0004] However, existing dispensing machines tend to use smaller diameter dispensing tubes during continuous operation to handle most fine dispensing tasks. When faced with areas on the workpiece that require large dispensing volumes, this approach often has to extend the dispensing time by reducing the moving speed of the dispensing head to ensure the total dispensing volume. Although this approach is feasible, it significantly reduces the overall dispensing efficiency, especially in large-scale production, where it becomes a bottleneck restricting the improvement of production efficiency.

[0005] In addition, some high-viscosity adhesives are prone to blockage of the dispensing tube during the dispensing process due to colloid settling, clumping, or solidification. This requires frequent shutdowns for cleaning and results in poor dispensing consistency. Existing anti-blocking methods cannot effectively achieve the combined anti-blocking function of preventive agitation and scraping off residual adhesive from the tube wall. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a dispensing machine, including a slide assembly and a glue storage tank, a support frame is fixedly installed on the slide assembly, an outgoing glue tube is fixedly installed on the lower side of the support frame, the dispensing machine also includes an inner glue tube set on the support frame through a connecting mechanism, the inner glue tube is inserted into the outgoing glue tube and rotates and moves up and down.

[0007] The storage tank is connected to the upper part of the inner cavity of the outgoing hose via a conduit.

[0008] Both the outer and inner outlet tubes have the same tapered shape at their lower ends. The outlet diameter of the outer tube is larger than that of the inner tube. When the inner tube moves downwards until its outer tapered surface fits against the inner tapered surface of the outer tube, the lower outlet of the outer tube is blocked.

[0009] The connecting mechanism includes a cleaning tube fitting that is rotatably disposed on the coaxial position inside the outlet tube and is used to clean the outlet of the inner outlet tube by scraping. A drive rod is slidably disposed on the inner side of the cleaning tube fitting, and the outer side of the drive rod is sealed and fitted with the inner side of the cleaning tube fitting. An active ring is fixedly installed on the outer side of the lower end of the drive rod and is rotatably connected to the inner wall of the inner outlet tube.

[0010] The connecting mechanism controls the drive rod to move up and down, causing the inner dispensing tube to move to three states: upper, middle, and lower. These states correspond to the inner dispensing tube rotating and stirring the glue, the outer dispensing tube dispensing glue at a large flow rate, and the inner dispensing tube dispensing glue at a small flow rate, respectively.

[0011] Preferably, the connecting mechanism further includes an electric actuator fixedly installed on the upper front side of the support frame. The output end of the electric actuator is fixedly connected to the drive rod and is used to drive the drive rod to move up and down and rotate.

[0012] Preferably, a stirring blade is fixedly installed on the outer side of the upper end of the unblocking fitting, and the stirring blade is located at the lower part of the connection between the conduit and the outgoing hose.

[0013] Preferably, the lower part of the unblocking fitting has a solid stepped rod structure, the middle diameter of the solid stepped rod structure of the unblocking fitting is the same as the inner diameter of the lower end outlet of the inner glue tube, and a rubber scraping ring is fixedly sleeved on the lower side of the solid stepped rod structure of the unblocking fitting.

[0014] Preferably, the upper side of the active ring is provided with equally spaced triangular grooves along its circumference, the upper end of the inner side of the outgoing hose is rotatably provided with a transmission cylinder, the upper end of the inner outgoing hose is fixedly installed with a linkage gear ring, the lower part of the transmission cylinder is provided with triangular teeth for insertion with the triangular grooves, and the middle structure of the transmission cylinder matches the shape of the upper end of the linkage gear ring.

[0015] Preferably, an alignment block is fixedly installed at equal intervals along the circumference of the upper end of the outer side of the inner dispensing tube, and a limiting strip of the limiting alignment block is fixedly installed on the inner side of the outer dispensing tube to lock the angle of the inner dispensing tube when dispensing glue.

[0016] Preferably, a movable frame is slidably arranged on the outer side of the inner dispensing tube. The upper part of the movable frame is a rod-shaped part that is slidably inserted into the alignment block. The lower part of the movable frame is provided with several sets of inclined push plates at equal intervals along its circumference. Each set consists of several inclined push plates that are hinged to the movable frame at equal intervals.

[0017] Preferably, a wedge-shaped toothed ring for pushing the moving frame downward is fixedly installed on the inner side of the outgoing hose, and a helical spring for pushing the moving frame upward is provided between the rod-shaped structure of the moving frame and the positioning block.

[0018] Preferably, a limiting block is fixedly installed on the lower part of the inclined push plate on the movable frame, and the limiting block is used to prevent the inclined push plate from rotating downward.

[0019] Preferably, the inner side of the conical surface of the outgoing hose is provided with several sealing rubber rings, and the middle part of the inner hose is provided with several rectangular grooves at equal intervals along its circumference to connect the inside and outside.

[0020] The beneficial effects of this invention are as follows: First, this invention uses a connecting mechanism to control the up and down movement of a drive rod, thereby driving the inner dispensing tube to move up and down synchronously. When the inner dispensing tube extends downward to the lower part of the outer dispensing tube, the glue is dispensed from the lower end of the inner dispensing tube at a small flow rate. When the inner dispensing tube is completely retracted into the outer dispensing tube, the glue is dispensed from the lower end of the outer dispensing tube at a large flow rate. Thus, the dispensing flow rate is automatically and quickly switched during the dispensing process, effectively adapting to the differentiated glue dispensing requirements of different areas of the workpiece, and significantly improving the overall efficiency of the dispensing operation.

[0021] Second, this invention uses an electric actuator to drive the unblocking fitting to rotate via a drive rod. This causes the stirring blades on the unblocking fitting to continuously agitate the glue flowing into the inner cavity of the outgoing glue tube, throwing any clumps or potentially forming high-viscosity glue in the glue towards the inner wall of the outgoing glue tube. This significantly reduces the risk of clogging the inner glue tube. At the same time, as the inner glue tube moves upward, the unblocking fitting drives the rubber scraping ring to pass through the lower outlet of the inner glue tube, scraping and cleaning the glue adhering to the tube opening or remaining inside, further ensuring smooth glue discharge from the inner glue tube.

[0022] Third, when the inner dispensing tube moves upward, the drive rod drives the inner dispensing tube to rotate synchronously, so that the circumferentially arranged inclined push plate applies a stirring and pushing effect on the glue in the inner cavity of the outer dispensing tube, effectively delaying the sedimentation and agglomeration of the glue. At the same time, with the help of the wedge-shaped toothed ring fixed to the inner wall of the outer dispensing tube, the intermittent downward push of the moving frame rod structure and the rebound effect of the helical spring make the inclined push plate generate a combination of up-and-down reciprocating and swinging motion, which enhances the mixing and pushing effect of the glue, and further improves the anti-clogging performance and glue dispensing consistency. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the glue storage tank, support frame, external glue hose and drive rod in this invention.

[0026] Figure 3 This is a partial cross-sectional view of the outgoing hose, the inner hose, the unclogging fitting, and the drive rod in this invention.

[0027] Figure 4 This is a partial cross-sectional view of the inner rubber tube, active ring, alignment block, and rubber scraping ring in this invention.

[0028] Figure 5 This is a partial cross-sectional view of the linkage gear ring and the transmission cylinder in this invention when they are not engaged.

[0029] Figure 6 This is a partial cross-sectional view of the limiting strip, alignment block, inclined push plate, and moving frame in this invention.

[0030] Figure 7 This is a schematic diagram of the structure of the movable frame, the inclined push plate, and the limiting block in this invention.

[0031] In the diagram: 1. Slide assembly; 2. Glue storage tank; 3. Support plate frame; 4. Outgoing glue hose; 5. Connecting mechanism; 6. Inner glue outlet hose; 51. Unblocking fitting; 52. Drive rod; 53. Active ring; 54. Electric actuator; 61. Alignment block; 62. Limiting strip; 63. Moving frame; 511. Mixing blade; 512. Rubber scraping ring; 531. Transmission cylinder; 532. Linkage gear ring; 631. Inclined push plate; 632. Wedge-shaped gear ring; 633. Limiting block. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0033] See Figure 1 , Figure 2 and Figure 3 A dispensing machine includes a slide assembly 1 and a glue storage tank 2. A support frame 3 is fixedly installed on the slide assembly 1, and an outgoing glue tube 4 is fixedly installed on the lower side of the support frame 3. The dispensing machine also includes an inner glue tube 6 that is set on the support frame 3 through a connecting mechanism 5. The inner glue tube 6 is inserted into the outgoing glue tube 4 and rotates and moves up and down. The glue storage tank 2 is connected to the upper part of the inner cavity of the outgoing glue tube 4 through a conduit.

[0034] See Figure 2 and Figure 3 Both the outer tube 4 and the inner tube 6 have the same tapered structure at their lower ends. The diameter of the lower outlet of the outer tube 4 is larger than that of the lower outlet of the inner tube 6. When the inner tube 6 moves downward until its outer tapered surface fits against the inner tapered surface of the outer tube 4, it blocks the lower outlet of the outer tube 4.

[0035] See Figure 2 , Figure 3 and Figure 4The connecting mechanism 5 includes a cleaning tube 51 that is rotatably disposed on the inner side of the outlet tube 4 and is used to clean the outlet of the inner outlet tube 6 by scraping. A drive rod 52 is slidably disposed on the inner side of the cleaning tube 51. The outer side of the drive rod 52 is sealed and fitted with the inner side of the cleaning tube 51. An active ring 53 that is rotatably connected to the inner wall of the inner outlet tube 6 is fixedly installed on the outer side of the lower end of the drive rod 52.

[0036] See Figure 3 and Figure 4 The inner side of the conical surface of the outgoing hose 4 is provided with several sealing rubber rings, and the middle part of the inner hose 6 is provided with several rectangular grooves at equal intervals along its circumference to connect the inside and outside.

[0037] When it is necessary to apply glue to different positions on the same workpiece, the slide assembly 1 controls the displacement of the outgoing glue tube 4 to the glue application position on the workpiece. When a large flow of glue is required at this glue application position, the connecting mechanism 5 drives the drive rod 52 to move upward. The drive rod 52 drives the inner glue tube 6 to move upward to the center position inside the outgoing glue tube 4 through the active ring 53. Then, glue is injected into the outgoing glue tube 4 through the glue storage tank 2, so that the glue in the outgoing glue tube 4 flows downward under pressure and flows out from the lower end outlet of the outgoing glue tube 4 onto the workpiece. At the same time, the slide assembly 1 controls the outgoing glue tube 4 to move along the preset trajectory to complete the rapid glue application at the high flow of glue application position on the workpiece.

[0038] When precise, low-flow dispensing of adhesive is required at the dispensing location, the connecting mechanism 5 moves the inner dispensing tube 6 downwards, causing the outer conical surface of the inner dispensing tube 6 to fit against the inner conical surface of the outer dispensing tube 4. This allows the inner dispensing tube 6 to work with the sealing ring to seal the lower outlet of the outer dispensing tube 4. At this time, pressure is applied by the adhesive storage tank 2, and the adhesive in the inner cavity of the outer dispensing tube 4 flows through the rectangular groove on the inner dispensing tube 6 to the interior of the inner dispensing tube 6, and then flows at a low flow rate from the lower outlet of the inner dispensing tube 6 to the workpiece. With the movement of the slide assembly 1, rapid dispensing of adhesive at the low-flow dispensing location on the workpiece is completed.

[0039] When dispensing is not required temporarily, such as when changing workpiece fixtures and preparing for the next batch of dispensing, the connecting mechanism 5 moves the inner dispensing tube 6 upward to the upper part of the outer dispensing tube 4. This causes the cleaning tube 51 to move downward relative to the inner dispensing tube 6. The cleaning tube 51 passes through the lower outlet of the inner dispensing tube 6 to scrape and clean the adhesive adhering to the tube opening or remaining inside, further ensuring smooth dispensing of adhesive from the inner dispensing tube 6.

[0040] To further prevent lumps and adhesive residues in the glue from clogging the narrow inner dispensing tube 6, in addition to the unblocking method of the clearing fitting 51, the present invention also designs the following structure to effectively prevent lumps and adhesive residues in the glue from entering the inner dispensing tube 6: See [reference] Figure 2and Figure 3 The connecting mechanism 5 also includes an electric actuator 54 fixedly installed on the upper front side of the support frame 3. The output end of the electric actuator 54 is fixedly connected to the drive rod 52 and is used to drive the drive rod 52 to move up and down and rotate.

[0041] See Figure 3 A stirring blade 511 is fixedly installed on the outer side of the upper end of the unblocking pipe fitting 51. The stirring blade 511 is located at the lower part of the connection between the conduit and the outgoing rubber hose 4.

[0042] It should be noted that the electric actuator 54 uses existing electrical components that can control the rotation and linear movement of its output end. As the electric actuator 54 is a mature technology, it will not be elaborated on in this article.

[0043] During dispensing, the output of the electric actuator 54 always drives the drive rod 52 to rotate. The drive rod 52 drives the stirring blade 511 on it to rotate through the unblocking pipe fitting 51, so that the stirring blade 511 continuously stirs the glue flowing into the inner cavity of the outlet glue tube 4, throwing the clumps and high-viscosity glue that have formed or may form in the glue towards the inner wall of the outlet glue tube 4, significantly reducing the risk of clogging the inner outlet glue tube 6.

[0044] It should be noted that when the outer conical surface of the inner dispensing tube 6 is attached to the inner conical surface of the outer dispensing tube 4, the rectangular groove on the inner dispensing tube 6 is located on the upper part of the conical structure of the outer dispensing tube 4, thereby preventing the clumps and high-viscosity adhesive on the wall of the outer dispensing tube 4 from flowing directly into the interior of the inner dispensing tube 6 under pressure through the rectangular groove.

[0045] To improve the unclogging effect of the unclogging fitting 51 on the lower outlet of the inner dispensing hose 6, the present invention designs the following structure: (See attached diagram) Figure 3 and Figure 4 The lower part of the unblocking pipe fitting 51 has a solid stepped rod structure. The diameter of the middle part of the solid stepped rod structure of the unblocking pipe fitting 51 is the same as the inner diameter of the lower end outlet of the inner glue outlet pipe 6. A rubber scraping ring 512 is fixedly sleeved on the lower side of the solid stepped rod structure of the unblocking pipe fitting 51.

[0046] When the lower end of the unblocking fitting 51 is inserted into the lower outlet of the inner dispensing tube 6 to clear the blockage, the unblocking fitting 51 drives the rubber scraping ring 512 to actively adhere to the inner wall of the lower outlet of the inner dispensing tube 6, thereby effectively pushing out the clumps and high-viscosity adhesive blocking the lower outlet of the inner dispensing tube 6.

[0047] To prevent the inner dispensing tube 6 from rotating during both dispensing and dispensing processes, thus avoiding wear on both tubes and preventing the inner dispensing tube 6 from disturbing the glue and affecting the uniformity of dispensing volume, and to ensure that the inner dispensing tube 6 rotates to disturb the glue when dispensing is paused, thereby delaying glue settling and agglomeration, the present invention designs the following structure: (See reference) Figure 3 , Figure 4 and Figure 5 The active ring 53 has triangular grooves arranged at equal intervals along its circumference on its upper side. The upper inner side of the outgoing rubber tube 4 is rotatably equipped with a transmission cylinder 531. The upper end of the inner outgoing rubber tube 6 is fixedly installed with a linkage gear ring 532. The lower part of the transmission cylinder 531 is provided with triangular teeth for insertion into the triangular grooves. The middle structure of the transmission cylinder 531 matches the shape of the upper end of the linkage gear ring 532.

[0048] See Figure 3 and Figure 6 Alignment blocks 61 are fixedly installed at equal intervals along the circumference of the upper end of the outer side of the inner dispensing tube 6, and a limiting strip 62 of the limiting alignment block 61 is fixedly installed on the inner side of the outer dispensing tube 4 to lock the angle of the inner dispensing tube 6 when dispensing glue.

[0049] It should be noted that, as Figure 5 As shown, the transmission cylinder 531 is composed of an inner cylinder and an outer ring structure. The lower part of the inner cylinder structure of the transmission cylinder 531 is provided with triangular teeth, and the lower end of the outer ring structure of the transmission cylinder 531 has the same tooth shape as the upper end structure of the linkage tooth ring 532.

[0050] It should also be noted that, such as Figure 6 As shown, the limiting strip 62 is composed of Y-shaped structures arranged at equal intervals along the circumference of the outgoing rubber tube 4. The number of Y-shaped structures in the limiting strip 62 is the same as that in the alignment block 61. The vertical section of the Y-shaped structure of the limiting strip 62 has a through groove in the middle to block and limit the alignment block 61. The end of the oblique section of the Y-shaped structure of the limiting strip 62 is fixedly connected to the end of the oblique section of the adjacent Y-shaped structure to form a tip structure. When the alignment block 61 moves from top to bottom, it can be guided by the oblique section of the Y-shaped structure of the limiting strip 62, so that the alignment block 61 can be smoothly inserted into the through groove of the limiting strip 62 for limiting.

[0051] When the inner dispensing tube 6 is in the lower or middle state, that is, when the inner dispensing tube 6 dispenses glue and when the outer dispensing tube 4 dispenses glue, the alignment block 61 on the inner dispensing tube 6 is located inside the through groove of the Y-shaped structure of the limiting strip 62, so that the alignment block 61 is blocked by the limiting strip 62, and thus the inner dispensing tube 6 cannot rotate at this time. The drive rod 52 drives the active ring 53 to rotate independently relative to the inner dispensing tube 6.

[0052] When the inner dispensing tube 6 is in the upper position, i.e. when dispensing glue temporarily, the drive rod 52 drives the inner dispensing tube 6 to the upper position through the active ring 53. The inner dispensing tube 6 drives the alignment block 61 to move completely to the upper part of the limit strip 62. At this time, the inner dispensing tube 6 drives the toothed structure at the upper end of the linkage gear ring 532 to mesh with the toothed structure at the lower end of the outer ring structure of the transmission cylinder 531. At the same time, the triangular groove on the active ring 53 is sleeved outside the triangular teeth of the inner cylinder structure of the transmission cylinder 531, so that the active ring 53 drives the inner dispensing tube 6 to rotate synchronously through the transmission cylinder 531 and the linkage gear ring 532.

[0053] To ensure that the inner dispensing tube 6 agitates and propels the adhesive during rotation, effectively delaying sedimentation and agglomeration, the present invention employs the following structure: (See attached diagram) Figure 3 , Figure 6 and Figure 7 A movable frame 63 is slidably installed on the outer side of the inner tube 6. The upper part of the movable frame 63 is a rod that is slidably inserted into the alignment block 61. Several sets of inclined push plates 631 are evenly spaced along the circumference of the lower part of the movable frame 63. Each set consists of several inclined push plates 631 that are hinged to the movable frame 63 at equal intervals.

[0054] When the inner dispensing tube 6 rotates, it drives the moving frame 63 on it to rotate synchronously. The moving frame 63 drives the inclined push plate 631 to rotate synchronously, so that the inclined push plate 631 pushes the glue in a spiral motion when it rotates. This allows the glue to rotate in the inner cavity of the outer dispensing tube 4 and move along the axial direction of the outer dispensing tube 4, thereby increasing the dynamic stirring dimension of the glue, improving the stirring effect, and effectively delaying the sedimentation and agglomeration of the glue.

[0055] To further increase the agitation of the adhesive, the present invention designs the following structure: (See attached diagram) Figure 3 and Figure 6 A wedge-shaped toothed ring 632, which is a rod-shaped structure for pushing the moving frame 63 downward, is fixedly installed on the inner side of the outgoing hose 4. A helical spring for pushing the moving frame 63 upward is provided between the rod-shaped structure of the moving frame 63 and the positioning block 61.

[0056] When the moving frame 63 rotates, the rod-shaped structure on the moving frame 63 intermittently contacts the wedge-shaped tooth surface of the wedge-shaped tooth ring 632, causing the wedge-shaped tooth ring 632 to intermittently push the moving frame 63 downward. When the rod-shaped structure of the moving frame 63 rotates away from the wedge tooth of the wedge-shaped tooth ring 632, the helical spring pushes the moving frame 63 upward to reset through its accumulated elastic force, thereby causing the moving frame 63 to drive the inclined push plate 631 to move up and down reciprocally, further improving the stirring effect.

[0057] To prevent excessive downward pushing of the adhesive by the inclined push plate 631, which could cause leakage from the outlet tube 4, the present invention incorporates the following structure: (See attached diagram) Figure 6 and Figure 7 A limiting block 633 is fixedly installed on the lower part of the inclined push plate 631 on the movable frame 63. The limiting block 633 is used to prevent the inclined push plate 631 from rotating excessively downward.

[0058] When the inclined push plate 631 moves upward, the limiting block 633 blocks the lower side of the inclined push plate 631, so that the inclined push plate 631 can overcome the glue resistance when it moves upward, thereby pushing the glue. When the inclined push plate 631 moves downward, the glue resistance can easily push the inclined push plate 631 to deflect upward, preventing the inclined push plate 631 from pushing the glue downward excessively.

[0059] This invention uses an electric actuator 54 to control the drive rod 52 to move up and down, causing the inner dispensing tube 6 to automatically switch between three states. When it extends downward to the lower part of the outer dispensing tube 4, it achieves a small flow of glue dispensing. When it is fully retracted, the glue flows out from the lower end of the outer dispensing tube 4 at a large flow rate. When it is at the upper part, it can be stirred, thus efficiently adapting to the flow requirements of different dispensing areas. At the same time, the cleaning pipe fitting 51 drives the stirring blade 511 to continuously stir the glue and throw away clumps. The rubber scraping ring 512 scrapes and cleans the outlet of the inner dispensing tube 6 when it moves upward, effectively preventing blockage of the inner dispensing tube 6 with a small outlet. In addition, when the inner dispensing tube 6 rotates, it drives the inclined push plate 631 to push the glue, and performs a compound motion under the action of the wedge-shaped toothed ring 632 and the spiral spring, further enhancing mixing, preventing glue sedimentation and clumping, and significantly improving dispensing consistency and efficiency.

[0060] It should be noted that the inner dispensing tube 6 and the outer dispensing tube 4 in this invention have a large diameter cylinder portion, which can accommodate the storage of adhesive liquid and the corresponding structure provided in this invention. The inner dispensing tube 6 and the outer dispensing tube 4 reduce the diameter of their outlet ends to the required range through the extension of their lower conical structure, thereby enabling the cylinder to simultaneously accommodate the adhesive liquid and the internal structure, and to dispense the adhesive reasonably through the conical body.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A glue dispenser comprising a sliding table assembly and a glue tank, characterized in that, The supporting plate frame is fixedly installed on the slide table assembly, and an outer glue outlet pipe is fixedly installed on the lower side of the supporting plate frame. The glue dispenser further comprises an inner glue outlet pipe arranged on the supporting plate frame through a connecting mechanism, and the inner glue outlet pipe is inserted into the outer glue outlet pipe to rotate and move up and down. The glue storage tank is communicated with the upper part of the inner cavity of the outer glue outlet pipe through the conduit. The lower end of the outer glue outlet pipe and the lower end of the inner glue outlet pipe are both conical structures with the same taper, the diameter of the lower end outlet of the outer glue outlet pipe is larger than that of the inner glue outlet pipe, and when the inner glue outlet pipe moves downward to the point where the outer side taper surface of the inner glue outlet pipe is attached to the inner side taper surface of the outer glue outlet pipe, the lower end outlet of the outer glue outlet pipe is blocked. The connecting mechanism comprises a clearing pipe arranged coaxially on the inner side of the outer glue outlet pipe and used for clearing the outlet of the inner glue outlet pipe by penetrating and scraping, a driving rod is slidingly arranged on the inner side of the clearing pipe, the outer side of the driving rod is sealingly attached to the inner side of the clearing pipe, and a driving ring is fixedly installed on the lower end of the outer side of the driving rod and rotationally connected to the inner wall of the inner glue outlet pipe. The connecting mechanism drives the inner glue outlet pipe to move to three states of upper, middle and lower by controlling the driving rod to move up and down, so as to correspond to the rotation of the inner glue outlet pipe to stir glue, the large flow of the outer glue outlet pipe to discharge glue and the small flow of the inner glue outlet pipe to discharge glue. The upper side of the driving ring is provided with equidistantly arranged triangular grooves along the circumference thereof, a transmission cylinder is rotationally arranged on the upper end of the inner side of the outer glue outlet pipe, a linkage tooth ring is fixedly installed on the upper end of the inner glue outlet pipe, triangular teeth are arranged on the lower part of the transmission cylinder and used for being inserted into the triangular grooves, and the middle part structure of the transmission cylinder is matched with the linkage tooth ring.

2. The adhesive dispenser according to claim 1, wherein The connecting mechanism further comprises an electric actuator fixedly installed on the front upper end of the supporting plate frame, the output end of the electric actuator is fixedly connected with the driving rod, and the electric actuator is used for driving the driving rod to move up and down and rotate.

3. The adhesive dispenser according to claim 1, wherein The upper end of the outer side of the clearing pipe is fixedly installed with stirring blades, and the stirring blades are located below the connection position of the conduit and the outer glue outlet pipe.

4. The adhesive dispenser according to claim 1, wherein The lower part of the clearing pipe is in a solid stepped rod structure, the middle part of the solid stepped rod structure of the clearing pipe is the same in diameter as the inner diameter of the lower end outlet of the inner glue outlet pipe, and a rubber scraping ring is fixedly sleeved on the lower side of the solid stepped rod structure of the clearing pipe.

5. The adhesive dispenser according to claim 1, wherein The outer side of the inner glue outlet pipe is fixedly installed with alignment blocks at the upper end along the circumference thereof at equal intervals, and the inner side of the outer glue outlet pipe is fixedly installed with a limiting strip for limiting the alignment blocks, so as to lock the angle of the inner glue outlet pipe during glue discharging.

6. The adhesive dispenser according to claim 5, wherein The outer side of the inner glue outlet pipe is slidingly provided with a moving frame, the upper part of the moving frame is in a rod shape and is slidingly inserted into the inner part of the alignment block, and the lower part of the moving frame is equidistantly provided with a plurality of groups of inclined push plates along the circumference thereof.

7. The adhesive dispenser according to claim 6, wherein The inner side of the outer glue outlet pipe is fixedly installed with a wedge-shaped tooth ring for pushing the rod-shaped structure of the moving frame downward, and a spiral spring is arranged between the rod-shaped structure of the moving frame and the alignment block for pushing the rod-shaped structure upward.

8. The adhesive dispenser according to claim 6, wherein The lower part of the moving frame is fixedly installed with a limiting block corresponding to the inclined push plate, and the limiting block is used for preventing the inclined push plate from rotating downward.

9. The adhesive dispenser of claim 1, wherein, The inner side of the taper surface of the outer glue outlet pipe is provided with a plurality of sealing rubber rings, and the middle part of the inner glue outlet pipe is equidistantly provided with a plurality of rectangular grooves for connecting the inner and outer parts thereof along the circumference thereof.

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