Process method and device for accurate trace glue brushing

Abstract

The invention relates to a process method and device for accurate trace glue brushing. The process method for accurate trace glue brushing comprises the following steps of glue solution preparation, wherein a needle cylinder filled with glue solution is installed; dispensing: controlling a needle cylinder to discharge glue on the belt surface of the conveyor belt to form dispensing; the conveying belt is controlled to be started, meanwhile, a glue scraping processing mechanism is controlled to scrape the dispensed glue on the belt face of the conveying belt, and a glue film is formed; glue taking: controlling the conveyor belt to stop, and controlling the brush to take glue from the glue film; a brush is controlled to brush glue on the workpiece; and glue cleaning: controlling the conveyor belt to start, and controlling the brush to abut against the clean belt surface of the conveyor belt to complete glue cleaning. The glue brushing device has the effect of improving the technical problems of low accuracy, non-uniform glue accumulation and low production efficiency of the existing glue brushing mode.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive coating, and in particular to a process method and device for accurately applying a small amount of adhesive. Background Art

[0002] In the field of industrial automation, specific application directions such as electronic manufacturing, optical industry, medical equipment, micro-mechanical systems (MEMS), precision assembly, such as aerospace, automobile manufacturing and instrument manufacturing, all require the use of precise and small amounts of brush glue for parts connection, packaging and assembly.

[0003] Generally, the existing technology often uses two methods of gluing: manual gluing or automatic equipment air pressure control gluing. Both have their own advantages and disadvantages but cannot complement each other, which are specifically reflected in the accuracy, adaptability and other aspects:

[0004] 1. Manual gluing: It is flexible and suitable for workpieces of various shapes and sizes. It is suitable for small batch production, easy to learn and has visual control. However, the accuracy of manual gluing is limited by the operator's technical level and manual operation. The accuracy is limited, and the amount of glue applied and the uniformity of glue application may be difficult to guarantee. Especially for applications that require high precision and consistency, there are disadvantages and limitations such as low production efficiency, glue waste and cost, and dependence on human resources.

[0005] 2. Automatic equipment with air pressure control for glue brushing: It has the advantages of high production efficiency, glue brushing accuracy of about 20mg, and is suitable for large-scale production and automated operation. However, when the accuracy requirement is higher, the uniform coating of glue will be worse, and it will be more demanding on the operator. For general glue, the long curing time is good, but for non-linear solid glue, the operator must understand the curing characteristics of the glue before modifying the equipment processing parameters. It has the disadvantages and limitations of limited parameter adaptability and flexibility, operation and maintenance requirements, glue waste and cleaning problems. Summary of the invention

[0006] The present invention aims to solve the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method, and provides a process method and device for accurate micro-amount glue brushing.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] On the one hand, a process for precise micro-brush glue application comprises the following steps:

[0009] Glue preparation: install the syringe filled with glue;

[0010] Glue dispensing: Control the syringe to dispense glue on the conveyor belt surface to form glue dispensing;

[0011] Glue scraping: Control the start of the conveyor belt and control the glue scraping mechanism to scrape the glue dots on the conveyor belt surface to form a glue film;

[0012] Glue removal: Control the conveyor belt to stop and control the brush to remove glue from the film;

[0013] Glue brushing: control the brush to apply glue to the workpiece;

[0014] Glue cleaning: Control the conveyor belt to start, and control the brush to contact the clean conveyor belt surface to complete the glue cleaning.

[0015] The beneficial effects of the present invention are as follows: the glue liquid can be loaded into a syringe and used multiple times, and the amount of glue used each time can be controlled; further, before the brush takes the glue, the glue spot is first processed by a glue scraping processing mechanism to form a glue film, which can ensure the sufficiency and uniformity of the brush taking the glue, and thus ensure the uniformity and accuracy of subsequent glue brushing; further, after completing a glue brushing action, the brush is cleaned with a clean conveyor belt surface, which can reduce the impact on the amount of glue taken by the brush in the next step, thereby improving the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method.

[0016] Based on the above technical solution, the present invention can also be improved as follows.

[0017] Furthermore, the syringe filled with glue is installed on a constant temperature device.

[0018] The beneficial effect of adopting the above further scheme is: using a constant temperature device to keep the syringe in a relatively constant temperature environment to relatively delay the curing time of the glue and allow the glue to be in a relatively linear curing change degree to ensure better coating effect when brushing the glue later.

[0019] Furthermore, after the syringe is installed and before dispensing glue, the syringe is controlled to start pre-dispensing glue on the belt surface of the conveyor belt.

[0020] The beneficial effect of adopting the above further solution is: by pre-discharging the glue liquid, the air inside the syringe is emptied, which can effectively prevent the phenomenon of empty glue and ensure the accuracy of the glue dispensing amount.

[0021] Furthermore, before installing the syringe containing the glue liquid, the glue liquid is first placed in a vacuum centrifugal mixer for stirring to complete bubbling. After bubbling, the glue liquid is sucked through the syringe.

[0022] The beneficial effect of adopting the above further solution is that after the glue liquid is bubbling, the gas inside is discharged to ensure the accurate amount of glue dispensed.

[0023] Furthermore, when scraping the glue, the width of the glue film is detected by a sensor, and the length of the glue is determined according to the volume formula, thereby determining the starting position of the brush when scraping the glue;

[0024] Among them, the volume formula is: volume = length × width × height;

[0025] When forming a film: the volume is the amount of each squeeze out of the syringe, the length is the length of the film formed by scraping the glue, the width is the width of the film; the height is the thickness of the film, that is, the distance between the scraping mechanism and the conveyor belt surface;

[0026] When scraping glue: the volume is the amount of glue taken by the brush, which is the amount of glue applied to the workpiece by the brush; the length is the length of the glue film required when the brush takes glue; the width is the width of the glue film; the height is the thickness of the glue film, that is, the distance between the scraping mechanism and the conveyor belt surface.

[0027] The beneficial effects of adopting the above further scheme are: accurately measuring the amount of glue taken by the brush each time to ensure the accuracy and uniformity of the glue application to the workpiece, and minimizing the glue liquid adhering to the brush after the glue application is completed, so as to ensure the accuracy of the amount of glue taken by the brush next time.

[0028] Furthermore, after the glue is taken out and before the glue is cleaned, the conveyor belt is controlled to start and the residual glue liquid that has been taken out is sent away.

[0029] The beneficial effect of adopting the above further solution is: the residual glue liquid is sent away in time, so that a clean conveyor belt surface is left at the glue removal position, which is convenient for subsequent glue cleaning operations.

[0030] On the other hand, a device for precise micro-amount glue application includes a frame, a glue dispensing unit, a glue application unit, and a workpiece mounting unit;

[0031] The dispensing unit comprises a syringe, a conveyor belt and a scraping glue processing mechanism, all of which are mounted on the frame, the needle of the syringe is downwardly directed toward the belt surface of the conveyor belt, and the scraping glue processing mechanism has an adjustable distance from the belt surface of the conveyor belt;

[0032] The glue brushing unit comprises a bidirectional linear drive mechanism installed on the frame and a brush installed on the bidirectional linear drive mechanism, wherein the brush of the brush extends toward the belt surface of the conveyor belt;

[0033] The workpiece mounting unit includes a mounting frame for mounting the workpiece.

[0034] The beneficial effects of the present invention are as follows: when in use, the syringe is controlled to extrude glue liquid toward the conveyor belt to complete the glue dispensing action, and then the conveyor belt is controlled to rotate, driving the glue liquid formed by the glue dispensing to pass between the glue scraping processing mechanism and the belt surface of the conveyor belt, so that the glue scraping processing mechanism scrapes the glue liquid to form a glue film, and then the conveyor belt is controlled to stop, and the brush is controlled to take glue from the glue film, and then the workpiece is controlled to the glue brushing position, and the brush is controlled to brush glue on the workpiece, and finally, the conveyor belt is controlled to start, and the brush is controlled to abut against the clean conveyor belt surface to complete the glue cleaning, so as to improve the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method through the above actions.

[0035] Based on the above technical solution, the present invention can also be improved as follows.

[0036] Furthermore, the dispensing unit also includes a constant temperature device installed on the frame, and the syringe is installed in the constant temperature device.

[0037] The beneficial effect of adopting the above further scheme is: using a constant temperature device to keep the syringe in a relatively constant temperature environment to relatively delay the curing time of the glue and allow the glue to be in a relatively linear curing change degree to ensure better coating effect when brushing the glue later.

[0038] Furthermore, the conveyor belt includes a material wheel, a waste wheel, multiple pulleys and a first motor. The material wheel, the waste wheel and the multiple pulleys are all rotatably connected to the frame, and a tape is installed on the material wheel. The belt surface of the tape is wound around the wheel surfaces of the multiple pulleys and then fixed to the belt surface of the waste wheel. The first motor is installed on the frame, and the driving end is transmission-connected to the waste wheel; the needle of the syringe is downward facing the belt surface of the tape.

[0039] The beneficial effect of adopting the above further scheme is: during use, the controller controls the start-up of the first motor to rotate the waste wheel, and the belt surface of the tape drives the material wheel to rotate, so that the belt surface drives the glue liquid dotted on the belt surface to move, and under the control of the controller, the scraping action of the scraping mechanism, the brushing action of the brush, and the cleaning action of the brush are performed successively.

[0040] Furthermore, it also includes a controller, which is used to control the syringe to dispense glue on the conveyor belt, control the opening and closing of the conveyor belt, control the scraper processing mechanism to adjust the distance between it and the conveyor belt, control the opening and closing of the bidirectional linear drive mechanism, so that the brush can take glue, brush glue and clean glue, and control the mounting frame to move the workpiece.

[0041] The beneficial effect of adopting the above-mentioned further scheme is: when in use, the controller controls the syringe to extrude the glue liquid toward the conveyor belt to complete the glue dispensing action, and then controls the conveyor belt to rotate through the controller to drive the glue liquid formed by the glue dispensing to pass between the glue scraping processing mechanism and the belt surface of the conveyor belt, so that the glue scraping processing mechanism scrapes the glue liquid to form a glue film, and then controls the conveyor belt to stop through the controller, and controls the brush to take the glue from the glue film through the controller, and then controls the workpiece to the glue brushing position through the controller, and controls the brush to brush the workpiece with glue through the controller, and finally, controls the conveyor belt to start through the controller, and controls the brush to abut against the clean conveyor belt surface through the controller to complete the glue cleaning, so as to improve the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method through the above-mentioned actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a flow chart of the present invention;

[0043] Figure 2 is an axonometric view of the present invention;

[0044] Figure 3 It is a schematic diagram of the first partial structure of the present invention, mainly showing the dispensing unit;

[0045] Figure 4 It is a second partial structural schematic diagram of the present invention, mainly showing the glue brushing unit;

[0046] Figure 5 for Figure 4 The enlarged structural diagram of the middle A part;

[0047] Figure 6 It is a third partial structural schematic diagram of the present invention, mainly showing a workpiece mounting unit;

[0048] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part B in the middle.

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] 1. Frame; 11. Column; 12. Horizontal plate; 13. Connecting plate;

[0051] 2. Syringe;

[0052] 3. Constant temperature device;

[0053] 4. conveyor belt; 41. material wheel; 42. waste wheel; 43. pulley; 44. first motor; 45. support plate;

[0054] 5. Glue scraping processing mechanism; 51. Linear drive seat; 52. Sliding block; 53. Glue scraping block; 54. Sensor;

[0055] 6. Bidirectional linear drive mechanism; 61. X-axis linear drive assembly; 62. Z-axis linear drive assembly; 63. First rotary cylinder;

[0056] 7. Brush;

[0057] 8. Mounting frame; 81. Y-axis linear drive assembly; 811. Guide rail; 812. Y-axis linear drive member; 82. Storage seat; 83. Rotating shaft; 84. Workpiece mounting seat; 85. Driving member; 86. Fixing member; 861. Fixing seat; 862. Second rotary cylinder; 863. Pressing block;

[0058] 9. Workpiece. DETAILED DESCRIPTION

[0059] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0060] On the one hand, an embodiment of the present invention provides a process method for applying a precise amount of glue, as described in detail below.

[0061] Example 1

[0062] like Figures 1 to 7 , a process method for precise micro-brush glue, comprising the following steps:

[0063] Preparation of glue: Install the syringe 2 filled with glue;

[0064] Glue dispensing: control the syringe 2 to dispense glue onto the surface of the conveyor belt 4 to form glue dispensing;

[0065] Glue scraping: Control the conveyor belt 4 to start, and at the same time control the glue scraping processing mechanism 5, so that when the conveyor belt 4 is conveyed, the glue scraping processing mechanism 5 scrapes the glue dots on the belt surface of the conveyor belt 4 to form a glue film;

[0066] Glue removal: control the conveyor belt 4 to stop, and control the brush 7 to remove glue from the glue film;

[0067] Glue brushing: controlling the brush 7 to apply glue to the workpiece 9;

[0068] Glue cleaning: Control the conveyor belt 4 to start, and control the brush 7 to abut against the clean surface of the conveyor belt 4 to complete the glue cleaning.

[0069] The beneficial effects of this embodiment are as follows: the glue liquid is loaded into the syringe 2, and since the syringe 7 only needs to form glue dots on the belt surface of the conveyor belt 4 after each glue discharge, the glue liquid in the syringe 2 can be used multiple times, and the syringe 7 can control the amount of glue used for each brushing; further, before the brush 7 takes the glue, the glue dots are first processed by the glue scraping processing mechanism 5 to form a glue film, so that the thickness of the glue film on the belt surface of the conveyor belt 4 is kept even, thereby ensuring the sufficiency and uniformity of the glue taken by the brush 7, and then ensuring the uniformity and accuracy of subsequent glue brushing; further, after completing a glue brushing action, the brush 7 is cleaned on the clean conveyor belt 4 to avoid the brush 7 from taking glue for the second time when a layer of glue liquid is attached to the surface, which can reduce the impact on the amount of glue taken by the brush 7 in the next step, thereby improving the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method.

[0070] The syringe 2 is an open structure at both ends, one end is connected to a needle, and the other end is sealed by a blocking structure; when in use, the blocking structure is pressurized to squeeze the glue in the syringe 2 out of the needle. Usually, as a conventional pressurization method, the blocking structure is a combination of a sealing plug and a push rod arranged in the syringe 2. The pressurization is achieved by applying force to the push rod, and the amount of glue discharged is controlled by controlling the stroke of the push rod to push the sealing plug to move in the syringe 2.

[0071] Furthermore, as one of the ways to apply pressure to the plugging structure, a linear drive mechanism such as a cylinder can be used to push the push rod to move and achieve pressurization. As a parallel pressurization method in the embodiment of the present invention, a combination structure of an air pipe and an air pump connected at the other end of the syringe 2 can be used to apply pressure to the sealing plug in the syringe 2 using the air pump.

[0072] Furthermore, a scale is provided on the body of the syringe 2 so as to read the amount of the glue.

[0073] Furthermore, before scraping the glue, the scraping glue processing mechanism 5 can be controlled to move toward the belt surface of the conveyor belt 4, so that the distance between the scraping glue processing mechanism 5 and the belt surface of the conveyor belt 4 is gradually reduced. After the scraping glue processing mechanism 5 stops moving, a distance between the scraping glue processing mechanism 5 and the conveyor belt 4 is formed, and the distance is the thickness of the glue film.

[0074] When applying glue to multiple workpieces 9, it is only necessary to replace the next workpiece 9 after completing the gluing of the previous workpiece 9, and repeat the steps of dispensing glue, scraping glue, taking glue, brushing glue and cleaning glue to complete the gluing action of multiple workpieces 9 until the amount of glue in the syringe 2 is insufficient to complete one gluing work, thereby improving the gluing efficiency.

[0075] Furthermore, the workpiece 9 can be replaced in cooperation with the robot to improve the working efficiency.

[0076] Example 2

[0077] like Figures 1 to 3 On the basis of Example 1, a syringe 2 filled with glue is installed on a constant temperature device 3.

[0078] The beneficial effect of adopting the preferred scheme in the above embodiment is that the constant temperature device 3 is used to keep the syringe 2 in a relatively constant temperature environment, so as to relatively delay the curing time of the glue liquid and allow the glue liquid to be in a relatively linear curing change degree to ensure a better coating effect when brushing the glue later.

[0079] The constant temperature device 3 can be a water bath thermostat, an oil bath thermostat, a plexiglass thermostat, a thermostat, etc. Taking the glue liquid as aviation self-made glue HY-14 as an example, the constant temperature of the glue liquid is set to 30°C; different glue liquids can have different corresponding constant temperature settings.

[0080] It is obvious that the longer the time is, the higher the viscosity of the glue becomes, and it will finally be completely solidified. Usually, the internal heat generated by solidification causes the viscosity of the glue to change faster after half an hour than in the first 30 minutes. Therefore, in the embodiment of the present invention, a constant temperature device 3 is provided to extend the solidification of the glue and allow the liquid to be in a relatively linear solidification change degree.

[0081] Example 3

[0082] like Figure 1 On the basis of Examples 1 and 2, after the syringe 2 is installed and before the glue is dispensed, the syringe 2 is first controlled to start pre-discharging glue on the belt surface of the conveyor belt 4. It should be noted that the pre-discharging of glue does not mean directly applying the glue to the belt surface of the conveyor belt 4, but making the liquid level of the glue flush with the end face of the needle outlet end on the syringe 2, ensuring that the capacity change of the blocking structure described in Example 1 when the syringe 2 moves is the glue discharge amount of the syringe 2, making the glue discharge amount of the syringe 2 more accurate.

[0083] The beneficial effect of adopting the preferred solution in the above embodiment is that the air inside the syringe 2 is emptied by pre-discharging the glue liquid, which can effectively prevent the phenomenon of empty glue and ensure the accuracy of the glue dispensing amount.

[0084] That is, before dispensing, the air in the syringe 2 can be discharged by applying pressure through the sealing structure described in Example 1.

[0085] Example 4

[0086] On the basis of Examples 1-3, before installing the syringe 2 filled with glue, the glue is first placed in a vacuum centrifugal mixer for stirring to complete bubbling, and after bubbling, the glue is sucked through the syringe 2. Although this method can achieve bubbling, after the syringe 2 absorbs the glue, in order to avoid the glue attached to the needle affecting the accuracy of subsequent glue dispensing, the needle can be cleaned before the syringe 2 dispenses glue, and the cleaning method can be directly cleaned with a rag, of course, the cleaning method can also be other methods.

[0087] The beneficial effect of adopting the preferred solution in the above embodiment is that after the glue liquid is bubbling, the gas inside it is discharged to ensure the accurate amount of glue dispensed.

[0088] As a specific solution of the above embodiment, the glue liquid can be placed in an open container (such as a water cup or a measuring cup) first, and then the container is placed in a vacuum centrifugal mixer for stirring to complete the bubbling, and then the emptied glue liquid is sucked by the syringe 2, and the glue liquid is loaded into the syringe 2. However, this operation method also requires that after the glue liquid is loaded into the syringe 2, the syringe 2 is controlled to pre-discharge the glue liquid to discharge the air in the needle of the syringe 2.

[0089] As a parallel solution of the above embodiment, the glue liquid can be placed directly in the syringe 2, and the needle (i.e., one end of the syringe 2) can be sealed by a combination of a plug and a rubber tape to ensure the bottom seal, and the other end of the syringe 2 can be opened so that it is in the same air pressure link (vacuum environment) when stirred in a vacuum environment, and then the syringe 2 filled with glue liquid is placed in a vacuum centrifugal mixer for stirring to complete the bubbling.

[0090] Among them, when stirring in a vacuum centrifugal mixer, the minimum stirring speed is 13000r / min. According to different adhesive viscosity coefficients for different speeds, the greater the viscosity of the adhesive, the higher the speed. Similarly, the longer the time for stirring the adhesive under vacuum. Taking the glue of HY-14, the glue of aviation self-prepared glue, as an example, the speed of the vacuum centrifugal mixer is 20000r / min, and the stirring time of the glue is 3 minutes.

[0091] Example 5

[0092] like Figures 1 to 3 On the basis of Embodiments 1-4, when scraping the glue, the width of the glue film is detected by the sensor 54, and the length of the glue is determined according to the volume formula, and then the starting position of the brush 7 when scraping the glue is determined;

[0093] Among them, the volume formula is: volume = length × width × height;

[0094] When forming a film: the volume is the amount of each squeeze out of the syringe 2, the length is the length of the film formed by scraping the glue, the width is the width of the film; the height is the thickness of the film, that is, the distance between the scraping mechanism 5 and the belt surface of the conveyor belt 4;

[0095] When scraping glue: the volume is the amount of glue taken by the brush 7, which is the amount of glue applied by the brush 7 on the workpiece 9; the length is the length of the glue film required when the brush 7 takes glue; the width is the width of the glue film; the height is the thickness of the glue film, that is, the distance between the scraping glue processing mechanism 5 and the belt surface of the conveyor belt 4.

[0096] The beneficial effect of adopting the preferred solution in the above embodiment is that the amount of glue taken by the brush 7 each time is accurate, so as to ensure the accuracy and uniformity of the glue application on the workpiece 9.

[0097] Specifically, when forming the film, the length a of the formed film can be calculated according to the volume formula. When scraping the film, the required length b of the film can be calculated, and the length b is less than a. After the brush 7 determines the starting scraping position, the scraping action of the length b can be performed.

[0098] Example 6

[0099] like Figure 1 and Figure 2 On the basis of Examples 1-5, after the glue is taken out and before the glue is cleaned, the conveyor belt 4 is controlled to start and the residual glue liquid that has been taken out is sent away.

[0100] The beneficial effect of adopting the preferred scheme in the above embodiment is that the residual glue liquid is sent away in time, so that there is no glue liquid at the position corresponding to the syringe 2 on the conveyor belt 4, so that a clean conveyor belt 4 surface is left at the glue taking position, which is convenient for the subsequent glue cleaning action of the brush 7.

[0101] As a preferred solution of the above embodiment, after the glue is taken out and before the glue is applied, the conveyor belt 4 is controlled to start and the residual glue liquid that has been taken out is sent away. The residual glue liquid is sent away in time to prevent the glue liquid from falling and affecting the glue application environment and subsequent glue application actions, and to improve efficiency; at the same time, it is prevented that the syringe 2 continues to apply glue on the conveyor belt 4 with glue liquid, and the accuracy of the glue taken by the brush 7 is prevented from being affected.

[0102] As one of the parallel solutions of the above embodiment, while the glue is being applied, the conveyor belt 4 is controlled to start and the residual glue liquid that has been taken away is sent away.

[0103] As a second parallel solution of the above embodiment, after brushing the glue and before cleaning the glue, the conveyor belt 4 is controlled to start and send away the residual glue liquid that has been taken out.

[0104] In summary, the process method for precise micro-amount glue application described in the embodiment of the present invention can adopt the following steps in sequence:

[0105] Preparation of glue liquid: firstly, place the container containing glue liquid in a vacuum centrifugal mixer for stirring and bubbling, and after bubbling, put the glue liquid into syringe 2; then install syringe 2 on constant temperature device 3; then pre-discharge glue liquid, squeeze the glue liquid in syringe 2, and discharge the gas in syringe 2;

[0106] Glue dispensing: control the syringe 2 to dispense glue onto the surface of the conveyor belt 4 to form glue dispensing;

[0107] Glue scraping: Control the conveyor belt 4 to start, and at the same time control the glue scraping processing mechanism 5 to scrape the glue dots on the belt surface of the conveyor belt 4 to form a glue film;

[0108] Glue removal: control the conveyor belt 4 to stop, and control the brush 7 to remove glue from the glue film;

[0109] Glue delivery: control the conveyor belt 4 to start and deliver the glue remaining at the position where the glue has been taken;

[0110] Glue brushing: controlling the brush 7 to apply glue to the workpiece 9;

[0111] Glue cleaning: Control the conveyor belt 4 to start, and control the brush 7 to abut against the clean surface of the conveyor belt 4 to complete the glue cleaning.

[0112] On the other hand, an embodiment of the present invention further provides a device for accurately applying a small amount of glue, as described in detail below.

[0113] Example 7

[0114] like Figures 1 to 7 , based on embodiments 1-7, a device for precise micro-amount glue brushing includes a frame 1, a glue dispensing unit, a glue brushing unit and a workpiece mounting unit;

[0115] The glue dispensing unit includes a syringe 2, a conveyor belt 4, and a glue scraping processing mechanism 5, all of which are installed on a frame 1. The needle of the syringe 2 is downwardly directed toward the belt surface of the conveyor belt 4. The glue scraping processing mechanism 5 and the belt surface of the conveyor belt 4 have an adjustable spacing, and the conveying direction of the conveyor belt 4 is taken as the forward direction. The glue scraping processing mechanism 5 is located in front of the syringe 2, so that after the syringe 2 completes the glue dispensing on the belt surface of the conveyor belt 4, the conveyor belt 4 moves forward, and the belt surface of the conveyor belt 4 and the glue scraping processing mechanism 5 generate relative movement, so that the glue on the conveyor belt 4 forms a glue film;

[0116] The glue brushing unit includes a bidirectional linear drive mechanism 6 installed on the frame 1 and a brush 7 installed on the bidirectional linear drive mechanism 6, and the brush 7 extends toward the belt surface of the conveyor belt 4;

[0117] The workpiece mounting unit includes a mounting frame 8 for mounting a workpiece 9 .

[0118] The beneficial effect of adopting the preferred scheme in the above embodiment is that when in use, the syringe 2 is directed toward the conveyor belt 4, and the glue liquid is squeezed out on the belt surface of the conveyor belt 4 to complete the glue dispensing action, and then the conveyor belt 4 is controlled to rotate, driving the glue liquid formed by the glue dispensing to pass between the glue scraping processing mechanism 5 and the belt surface of the conveyor belt 4, so that the glue scraping processing mechanism 5 scrapes the glue liquid to form a glue film on the belt surface of the conveyor belt 4, and then the conveyor belt 4 is controlled to stop, and the brush 7 is controlled to take the glue from the glue film, and then the workpiece 9 is controlled to the glue brushing position, and the brush 7 is controlled to brush the workpiece 9 with glue, and finally, the conveyor belt 4 is controlled to start, and the brush 7 is controlled to abut against the clean belt surface of the conveyor belt 4 to complete the glue cleaning, so as to improve the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method through the above actions.

[0119] Among them, the frame 1 includes at least two vertically arranged columns 11, a horizontal plate 12 fixed to the upper ends of multiple columns 11, and a connecting plate 13 fixed to the columns 11 by screws; the columns 11, the horizontal plate 12 and the connecting plate 13 can all be made of aluminum profiles; and there are two connecting plates 13, and the two connecting plates 13 are perpendicular to each other.

[0120] Furthermore, the syringe 2 , the conveyor belt 4 and the uniformly scraped glue processing mechanism 5 are installed on the connecting plate 13 ; and the bidirectional linear driving mechanism 6 is installed on the transverse plate 12 .

[0121] The syringe 2 is an open structure at both ends, one end of which is connected to a needle, and the other end is sealed by a blocking structure; when in use, the glue in the syringe 2 is squeezed out from the needle by applying pressure through the blocking structure. Usually, as a conventional pressurizing method, the blocking structure is a combination structure of a sealing plug and a push rod arranged in the syringe 2, and pressurization is achieved by applying force to the push rod, thereby pushing the sealing plug to move in the syringe 2.

[0122] As a pressurizing method in an embodiment of the present invention, a combined structure of an air pipe and an air pump connected to the other end of the syringe 2 can be used to achieve pressurization by using the air pump to face the sealing plug in the syringe 2.

[0123] Example 8

[0124] like Figure 2 and Figure 3 On the basis of Example 7, the dispensing unit further includes a constant temperature device 3 installed on the frame 1, and the syringe 2 is installed in the constant temperature device 3.

[0125] The beneficial effect of adopting the preferred scheme in the above embodiment is that the constant temperature device 3 is used to keep the syringe 2 in a relatively constant temperature environment, so as to relatively delay the curing time of the glue liquid and allow the glue liquid to be in a relatively linear curing change degree to ensure a better coating effect when brushing the glue later.

[0126] The constant temperature device 3 can be a water bath thermostat, an oil bath thermostat, a plexiglass thermostat, a thermostat, etc. Taking the glue liquid as aviation self-made glue HY-14 as an example, the constant temperature of the glue liquid is set to 30°C; different glue liquids can have different corresponding constant temperature settings.

[0127] It is obvious that the longer the time is, the higher the viscosity of the glue becomes, and it will finally be completely solidified. Usually, the internal heat generated by solidification causes the viscosity of the glue to change faster after half an hour than in the first 30 minutes. Therefore, in the embodiment of the present invention, a constant temperature device 3 is provided to extend the solidification of the glue and allow the liquid to be in a relatively linear solidification change degree.

[0128] Specifically, a hole is vertically opened on the constant temperature device 3 , and the syringe 2 is installed in the hole, and the needle extends downward from the constant temperature device 3 and faces the belt surface of the conveyor belt 4 .

[0129] Furthermore, the thermostat 3 is fixed on the connecting plate 13 described in the seventh embodiment.

[0130] Example 9

[0131] like Figure 2 and Figure 3 On the basis of Examples 7 and 8, the conveyor belt 4 includes a material wheel 41, a waste wheel 42, a plurality of pulleys 43 and a first motor 44. The material wheel 41, the waste wheel 42 and the plurality of pulleys 43 are all rotatably connected to the connecting plate 13 of the frame 1, and a tape is installed on the material wheel 41. The tape surface is wound around the wheel surfaces of the plurality of pulleys 43 and then fixed to the tape surface of the waste wheel 42. The first motor 44 is installed on the frame 1, and the driving end is transmission-connected to the waste wheel 42; the needle of the syringe 2 is downward toward the tape surface of the tape.

[0132] The beneficial effect of adopting the preferred scheme in the above embodiment is that during use, the start of the first motor 44 is controlled to rotate the waste wheel 42, and the waste wheel 42 pulls the tape when rotating, driving the pulley 43 and the material wheel 41 to rotate, so that the belt surface drives the glue liquid dotted on the belt surface to move, and then the scraping action of the scraping mechanism 5, the brushing action of the brush 7 and the cleaning action of the brush 7 are successively performed.

[0133] Wherein, the pulley 43 is an encoder pulley, and Figure 3 In the figure, the plurality of pulleys 43 are shown as three, and the three pulleys 43 are arranged in a triangular structure. The tape surface pulled out from the material wheel 41 passes through the wheel surfaces of the three pulleys 43 in sequence and is fixed to the waste wheel 42.

[0134] Furthermore, relative to the traveling direction of the tape surface (clockwise in the figure), the tape surface portion wound between the two pulleys 43 relatively close to the material wheel 41 is in a horizontal state, and the needle of the syringe 2 is downwardly facing the tape surface in the horizontal state; the tape surface portion wound between the two pulleys 43 relatively close to the waste wheel 42 is in a downwardly inclined state and is opposite to the brush 7. Furthermore, a support plate 45 mounted on the connecting plate 13 is provided on the inner side of the tape surface opposite to the brush 7, so that the support plate 45 forms a support effect on the tape surface portion in a downwardly inclined state, thereby ensuring the adhesive extraction effect of the brush 7.

[0135] The material wheel 41 , the waste wheel 42 , the pulley 43 and the first motor 44 are all rotatably connected to the vertically arranged connecting plate 13 .

[0136] As a specific connection method, the driving end of the first motor 44 can be connected to one end of the waste wheel 42 through a pulley mechanism, the waste wheel 42 can be coaxially connected to the driving end of the first motor 44, or the driving end of the first motor 44 can be connected to one end of the waste wheel 42 through a gear mechanism to drive the waste wheel 42. The first motor 44 is a stepping motor.

[0137] Example 10

[0138] like Figure 2 and Figure 3 On the basis of Examples 7-9, a device for precise micro-amount glue brushing also includes a controller, which is used to control the syringe 2 to dispense glue on the conveyor belt 4, control the opening and closing of the conveyor belt 4 (specifically control the opening and closing of the first motor 44), control the glue scraping processing mechanism 5 to adjust the distance between it and the conveyor belt 4, control the opening and closing of the bidirectional linear drive mechanism 6, so that the brush 7 can take glue, brush glue and clean glue, and control the mounting frame 8 to move the workpiece 9.

[0139] The beneficial effect of adopting the above-mentioned further scheme is: when in use, the controller controls the syringe to extrude the glue liquid toward the conveyor belt to complete the glue dispensing action, and then controls the conveyor belt to rotate through the controller to drive the glue liquid formed by the glue dispensing to pass between the glue scraping processing mechanism and the belt surface of the conveyor belt, so that the glue scraping processing mechanism scrapes the glue liquid to form a glue film, and then controls the conveyor belt to stop through the controller, and controls the brush to take the glue from the glue film through the controller, and then controls the workpiece to the glue brushing position through the controller, and controls the brush to brush the workpiece with glue through the controller, and finally, controls the conveyor belt to start through the controller, and controls the brush to abut against the clean conveyor belt surface through the controller to complete the glue cleaning, so as to improve the technical problems of low precision, uneven glue accumulation and low production efficiency in the existing glue brushing method through the above-mentioned actions.

[0140] Among other things, the controller may take the form of a hardware-based control circuit having logic gates or other elements to perform the desired controller functions.

[0141] like Figure 2 and Figure 3 The scraper processing mechanism 5 includes a linear drive seat 51, a slider 52 and a scraper block 53; the linear drive seat 51 is installed on the connecting plate 13, which is a screw slide structure, driven by a rotary motor, and the rotary motor is connected to a controller and started by the controller.

[0142] The slider 52 is vertically slidably connected to the linear drive seat 51; and the scraper block 53 is installed on the slider 52 by screws, and moves vertically with the movement of the slider 52 to achieve the change of the distance between the tape surfaces.

[0143] Specifically, the scraping block 53 is arranged opposite to the middle pulley 43, so that when the glue on the tape surface is scraped, the pulley 43 is used to support the tape. When the number of pulleys 43 is greater than 3, the scraping block 53 corresponds to the pulley 43 located between the syringe 2 and the brush 7, ensuring that the syringe 2 can be scraped by the scraping block 53 immediately after the glue is applied to the tape, and the brush 7 can be used to remove the glue immediately after the scraping, so as to avoid the glue film from solidifying before the brush 7 removes the glue.

[0144] Furthermore, the width of the scraper block 53 is not less than the width of the brush 7 to ensure that a glue film larger than the width of the brush 7 is formed by scraping the glue through the scraper block 53, and the two sides of the brush 7 do not exceed the two sides of the scraper block 53 to ensure the integrity of the glue taken by the brush 7; the width of the scraper block 53 is not greater than the width of the tape surface to prevent the glue film formed by scraping the glue from escaping from the tape surface.

[0145] Furthermore, the scraping mechanism 5 further comprises a sensor 54 , which is installed below the scraping block 53 and is signal-connected to the controller to record the width data of the adhesive film in real time.

[0146] After the controller receives the width data of the adhesive film in real time, it obtains the length of the entire adhesive tape through the volume formula, and then obtains the starting position of the brush 7 when taking the adhesive based on the volume formula, and accurately determines the amount of adhesive taken by the brush 7 each time.

[0147] Among them, the volume formula is: volume = length × width × height;

[0148] When forming a film: the volume is the amount of each squeeze out of the syringe 2, the length is the length of the film formed by scraping the glue, the width is the width of the film; the height is the thickness of the film, that is, the distance between the scraping mechanism 5 and the belt surface of the conveyor belt 4;

[0149] When scraping glue: the volume is the amount of glue taken by the brush 7, which is the amount of glue applied by the brush 7 on the workpiece 9; the length is the length of the glue film required when the brush 7 takes glue; the width is the width of the glue film; the height is the thickness of the glue film, that is, the distance between the scraping glue processing mechanism 5 and the belt surface of the conveyor belt 4.

[0150] like Figure 2 , Figure 4 as well as Figure 5 The bidirectional linear drive mechanism 6 includes an X-axis linear drive component 61 and a Z-axis linear drive component 62, both of which are connected to the controller signal; the X-axis linear drive component 61 and the Z-axis linear drive component 62 can both adopt a ball screw structure, a cylinder, etc., and the driving direction of the X-axis linear drive component 61 extends horizontally along the arrangement direction of the brush 7 and the conveyor belt 4, and the Z-axis linear drive component 62 is installed on the driving part of the X-axis linear drive component 61.

[0151] A first rotary cylinder 63 connected to the controller signal is also installed on the driving part of the Z-axis linear drive component 62, and the rod of the brush 7 is fixed to the driving part of the first rotary cylinder 63 so that the brush 7 rotates a certain angle under the action of the first rotary cylinder 63.

[0152] like Figure 2 , Figure 6 as well as Figure 7 The mounting frame 8 includes a Y-axis linear drive assembly 81, a storage seat 82, a rotating shaft 83, a workpiece mounting seat 84, a driving member 85, and a fixing member 86. The workpiece 9 is fixed on the workpiece mounting seat 84 by the fixing member 86.

[0153] The Y-axis linear drive assembly 81 includes parallel guide rails 811 and a Y-axis linear drive member 812 . The Y-axis linear drive member 812 is connected to the controller signal and may adopt a ball screw structure, a cylinder, or the like.

[0154] The storage seat 82 is slidably connected to the guide rail 811 and is installed on the driving end of the Y-axis linear driving member 812 to achieve position change along the length direction of the guide rail 811 under the control of the controller.

[0155] The rotating shaft 83 is arranged vertically, and its lower end is rotatably connected to the storage seat 82 and connected to the driving end of the driving member 85. The driving member 85 is connected to the controller signal and installed on the storage seat 82. The driving member 85 can be a rotary cylinder, a stepping motor, etc.

[0156] The workpiece mounting seat 84 is installed at the upper end of the rotating shaft 83 and is used to mount the workpiece 9. Under the control of the controller, the driving member 85 is started to rotate the rotating shaft 83, thereby driving the workpiece 9 to rotate.

[0157] The fixing member 86 includes a fixing seat 861 installed on the storage seat 82, a second rotating cylinder 862 installed on the fixing seat 861, and a pressure block 863 fixed to the output end of the second rotating cylinder 862; the second rotating cylinder 862 is connected to the controller, and one end of the pressure block 863 is fixed to the output end of the second rotating cylinder 862, and the other end is rotatably connected to a pressure rod, which presses the workpiece 9 down to the workpiece mounting seat 84.

[0158] When brushing glue, first install the workpiece 9 on the workpiece mounting seat 84 and fix it with the fixing part 86; then control the Y-axis linear driving part 812 to start through the controller, so as to indirectly move the workpiece 9 in the straight line direction where the brush 7 is located; then, control the glue brushing unit to start through the controller, so that the brush 7 brushes glue on the workpiece 9.

[0159] In order to provide a clear and complete description of the present invention, the workpiece 9 is taken as an example for description below, wherein the side surface of the plug is a conical surface.

[0160] Preparation of glue liquid: firstly, place the container containing glue liquid in a vacuum centrifugal mixer for stirring and bubbling, and after bubbling, put the glue liquid into syringe 2; then install syringe 2 on constant temperature device 3; then, pressurize the syringe 2 from the rear end through the controller to the inside of syringe 2, pre-discharge glue liquid, squeeze the glue liquid in syringe 2, and discharge the gas in syringe 2;

[0161] Glue dispensing: The conveyor belt 4 is closed by the controller, and the syringe 2 is pressurized by the controller to control the syringe 2 to discharge glue on the belt surface of the conveyor belt 4 to form glue dispensing;

[0162] Glue scraping: First, the controller controls the movement of the glue scraping processing mechanism 5, so that the glue scraping block 53 of the glue scraping processing mechanism 5 moves toward the belt surface of the conveyor belt 4 to form a gap for the glue film to pass through, and then the controller controls the conveyor belt 4 to start, and the conveyor belt 4 rotates (clockwise in the figure), driving the glue dots to pass through the space between the glue scraping block 53 and the belt surface of the conveyor belt 4, and the glue scraping processing mechanism 5 scrapes the glue dots on the belt surface of the conveyor belt 4 to form a glue film;

[0163] Glue taking: the conveyor belt 4 is stopped by the controller, and the first rotary cylinder 63 is started by the controller, so that the brush surface of the brush 7 is in a horizontal state of 180°. Then, according to the glue taking position of the brush 7 calculated by the controller, the controller controls the X-direction linear drive component 61 and the Z-direction linear drive component to move, so that the brush 7 moves to the glue taking position and fits with the tape surface. After reaching the glue taking position, the controller controls the X-direction linear drive component 61 and the Z-direction linear drive component to move, so that the brush 7 moves and scrapes the tape surface along the tape surface direction to take glue from the adhesive film on the tape surface. After the preset amount of glue liquid is attached to the surface of the brush 7, the controller controls the brush 7 to move to the original position.

[0164] Glue feeding: After the preset amount of glue is attached, the controller controls the first motor 44 to start, and the glue remaining at the position where the glue has been taken is fed away, and the first motor 44 is stopped after being wound up on the waste wheel. At this time, the original glue taking position presents a clean tape;

[0165] Glue brushing: The controller controls the first rotary cylinder 63 to start, so that the brush surface of the brush 7 is in a 90° vertical state; then the workpiece 9 is installed on the workpiece mounting seat 84, and the controller controls the Y-direction linear driving member 812 to start, so that the workpiece 9 moves in the straight line direction where the brush 7 is located; then the controller controls the driving member 85 to start, so that the workpiece 9 rotates at a low speed (50R / min), and the controller indirectly controls the brush 7 to move toward the workpiece 9. After the brush 7 is pre-pressed forward by about 2-3mm, the glue brushing is completed by the rotation of the workpiece 9, and the controller indirectly controls the brush 7 and the workpiece 9 to return to the original position;

[0166] Glue cleaning: First, the controller controls the first rotating cylinder 63 to start, so that the brush surface of the brush 7 is in a horizontal state of 180°, and then the controller controls the conveyor belt 4 to start, and controls the brush 7 to abut against the clean conveyor belt 4 surface to complete the glue cleaning, and then moves the brush 7 to its original position.

[0167] At this point, a complete glue brushing process is completed.

[0168] When applying glue to other workpieces 9, glue dispensing, glue scraping, glue taking, glue feeding, glue brushing and glue cleaning can be performed until the glue liquid in the syringe 2 solidifies or is insufficient to complete one glue application action.

[0169] When applying glue, the controller can be used to control the brush to move back and forth at a variable speed and non-periodic manner, so as to complete the work of applying glue to the surface of the workpiece 9 more quickly.

[0170] After the glue is applied, the workpiece 9 needs to keep rotating until the brush 7 is completely separated from the surface of the workpiece 9, so as to prevent glue accumulation points from forming on the surface of the workpiece 9.

[0171] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0172] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0173] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0174] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0175] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0176] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A process for precise micro-amount glue application, characterized in that: The following steps are involved: Preparation of glue: installing the syringe (2) filled with glue; Glue dispensing: controlling the syringe (2) to dispense glue onto the surface of the conveyor belt (4) to form glue dots; Glue scraping: controlling the conveyor belt (4) to start, and at the same time controlling the glue scraping processing mechanism (5) to scrape the glue dots on the surface of the conveyor belt (4) to form a glue film; Glue removal: controlling the conveyor belt (4) to stop, and controlling the brush (7) to remove glue from the glue film; Glue brushing: controlling the brush (7) to apply glue to the workpiece (9); Glue cleaning: Control the conveyor belt (4) to start, and control the brush (7) to contact the clean conveyor belt (4) surface to complete the glue cleaning.

2. According to the process of claim 1, the precise micro-amount of glue application is characterized in that: The syringe (2) filled with glue is installed on the constant temperature device (3).

3. According to the process of claim 2, the precise micro-amount of glue application is characterized in that: After the syringe (2) is installed and before glue dispensing, the syringe (2) is first controlled to start pre-dispensing glue liquid on the belt surface of the conveyor belt (4).

4. According to the process of a precise micro-amount of glue brushing as claimed in claim 1, it is characterized in that: Before installing the syringe (2) containing the glue liquid, the glue liquid is first placed in a vacuum centrifugal mixer for stirring to complete bubbling. After bubbling, the glue liquid is sucked through the syringe (2).

5. According to the process of claim 1, the precise micro-amount of glue brushing is characterized in that: When scraping the glue, the width of the glue film is detected by the sensor (54), and the length of the glue is determined according to the volume formula, thereby determining the starting position of the brush (7) when scraping the glue; Among them, the volume formula is: volume = length × width × height; When forming a film, the volume is the amount of the syringe (2) extruded each time, the length is the length of the film formed by scraping the glue, and the width is the width of the film; the height is the thickness of the film, that is, the distance between the scraping mechanism (5) and the conveyor belt (4). When scraping glue: the volume is the amount of glue taken by the brush (7), which is the amount of glue applied by the brush (7) to the workpiece (9); the length is the length of the glue film required when the brush (7) takes glue; the width is the width of the glue film; and the height is the thickness of the glue film, that is, the distance between the scraping glue processing mechanism (5) and the belt surface of the conveyor belt (4).

6. According to the process of claim 1, the precise micro-amount of glue application is characterized in that: After the glue is taken out and before the glue is cleaned, the conveyor belt (4) is controlled to start and the residual glue liquid that has been taken out is sent away.

7. A device for precise micro-amount glue application, characterized in that: It comprises a frame (1), a glue dispensing unit, a glue brushing unit and a workpiece mounting unit; The glue dispensing unit comprises a syringe (2), a conveyor belt (4) and a glue scraping processing mechanism (5) all mounted on the frame (1); the needle of the syringe (2) is downwardly directed toward the belt surface of the conveyor belt (4); and the glue scraping processing mechanism (5) and the belt surface of the conveyor belt (4) have an adjustable spacing; The glue brushing unit comprises a bidirectional linear drive mechanism (6) installed on the frame (1) and a brush (7) installed on the bidirectional linear drive mechanism (6), wherein the brush (7) extends toward the belt surface of the conveyor belt (4); The workpiece mounting unit comprises a mounting frame (8) for mounting a workpiece (9).

8. The device for precise micro-amount glue application according to claim 7, characterized in that: The dispensing unit further comprises a constant temperature device (3) installed on the frame (1), and the syringe (2) is installed in the constant temperature device (3).

9. The device for precise micro-amount glue application according to claim 7, characterized in that: The conveyor belt (4) comprises a material wheel (41), a waste wheel (42), a plurality of pulleys (43) and a first motor (44); the material wheel (41), the waste wheel (42) and the plurality of pulleys (43) are all rotatably connected to the frame (1); and a tape is installed on the material wheel (41); the tape surface of the tape is wound around the wheel surfaces of the plurality of pulleys (43) and then fixed to the tape surface of the waste wheel (42); the first motor (44) is installed on the frame (1), and the driving end is transmission-connected to the waste wheel (42); the needle of the syringe (2) is downwardly facing the tape surface of the tape.

10. A device for precise micro-amount glue application according to any one of claims 7 to 9, characterized in that: It also includes a controller, which is used to control the syringe (2) to dispense glue on the conveyor belt (4), control the opening and closing of the conveyor belt (4), control the scraping glue processing mechanism (5) to adjust the distance between it and the conveyor belt (4), control the opening and closing of the bidirectional linear drive mechanism (6), so that the brush (7) can take glue, brush glue and clean glue, and control the mounting frame (8) to move the workpiece (9).

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