Precise intelligent control dispensing equipment and dispensing process

Abstract

The invention discloses precise intelligent control dispensing equipment and a dispensing process, and relates to the technical field of dispensing technologies. The device comprises an upper box body, wherein a lower box body is fixedly mounted at the bottom of the upper box body; an electrostatic adsorption tray is arranged in the upper box body, the electrostatic adsorption tray can rotate in the upper box body, an automatic optical detector is arranged in the upper box body, plasma cleaning equipment is arranged in the upper box body, a dispensing mechanism is arranged in the upper box body, and the dispensing mechanism can spray various fluids. Comprising but not limited to a bottom filler, organic silicon, a sealant, a conformal coating, a UV adhesive, conductive epoxy resin and the like, has the advantages of rapid spraying, Z-axis error elimination, accurate spraying, high repeatability, easiness in use and maintenance, selectable fluid preheater, suitability for low-flow and high-flow applications, reduction of bubbles generated in the dispensing process, and high product quality. Double inspection and height adjustment are carried out through the arranged two sensors, Z-axis errors are reduced, and the dispensing precision can be improved through the arranged dispensing head.

Description

Technical Field

[0001] The present invention relates to the technical field of glue dispensing technology equipment, and in particular to a precision intelligently controlled glue dispensing equipment and a glue dispensing process. Background Art

[0002] The dispensing machine, also known as the glue coating machine or the glue dripping machine, is an automatic machine that controls and drips or applies the fluid on the surface or inside of the product. It is widely used in the fields of industrial dispensing, bonding, electronic component packaging, etc. The dispensing machine is generally composed of a dispensing valve (or dispensing head, dispensing device), a multi-degree-of-freedom motion (mostly three-degree-of-freedom) platform, an image recognition device (camera) and a control system, a rack and auxiliary devices. Among them, the dispensing valve or dispensing device is the most critical core device, which has the greatest impact on the dispensing quality and dispensing accuracy; the multi-degree-of-freedom motion platform is used to realize the movement and positioning of the dispensing valve; the control system is used to control the movement of the dispensing head and the dispensing time and amount of the dispensing head; some intelligent dispensing machines often have an image recognition device (camera) for automatic identification of the position and dispensing area of ​​the workpiece; the rack is used to support the overall quality of the multi-degree-of-freedom motion platform and the dispensing machine. Since the dispensing head is in high-speed motion during the dispensing process, it often produces large vibrations, so the rack has a greater impact on the stability of the dispensing machine. With the advancement of industrialization and the increase in labor costs, the requirements for the automation level and operation accuracy of dispensing equipment are getting higher and higher.

[0003] In the patent (application number: CN202211092407.2), a semiconductor wafer dispensing device is disclosed, including a syringe and a needle tube, the needle tube is detachably arranged on the syringe, and also includes: a conveying mechanism; a plurality of wafer fixing devices, placed on the conveying mechanism; a guiding device, arranged on the conveying mechanism for guiding the wafer fixing device; a height measuring device, which includes a box body with openings on both sides and a contact plate, the contact plate is slidably arranged on the box body, the contact plate is in a bent shape, and its bottom at least generally has an inclined surface, and a protective pad is arranged on the contact surface between the contact plate and the wafer; a driving device, arranged on the box body for driving the syringe to move up and down; a first sensor, arranged on the box body for sensing the wafer fixing device; two second sensors, each arranged on the box body and the contact plate for sensing the syringe; a detection device, for detecting whether the needle tube is blocked; a time relay; a controller. In the present invention, wafers of different sizes can be dispensed, and at the same time, whether the wafer is dispensed can be automatically detected, without manual detection, and the efficiency is high.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] Domestically produced multi-axis intelligent dispensing machines have high dispensing accuracy and speed in single-component dispensing, but most products still have problems such as insufficient dispensing accuracy, unstable dispensing, and poor dispensing consistency. At the same time, in terms of the structural type of dispensing machine products, the frame-type three-axis dispensing platform is still the preferred model for domestic dispensing machine products, which can no longer meet the needs of precision processes in some fields. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a precision intelligently controlled dispensing device and a dispensing process.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A precision intelligent control glue dispensing device and glue dispensing process, comprising an upper box body, a lower box body being fixedly mounted on the bottom of the upper box body;

[0009] An electrostatic adsorption tray is arranged inside the upper box body, and the electrostatic adsorption tray can rotate inside the upper box body, an automatic optical detector is arranged inside the upper box body, a plasma cleaning device is arranged inside the upper box body, and a dispensing mechanism is arranged inside the upper box body;

[0010] The dispensing mechanism includes a piezoelectric valve arranged on one side of the upper box body, a dispensing head is fixedly installed on the bottom of the piezoelectric valve, a connecting tube is fixedly installed on one side of the dispensing head, a screw cap is fixedly installed on the top of the connecting tube, an injection cylinder is arranged on one side of the piezoelectric valve, the injection cylinder is rotatably connected to the connecting tube by screwing the cap, an air inlet pipe is fixedly installed on the top of the injection cylinder, an electromagnetic valve is arranged inside the air inlet pipe, a first sensor is arranged on the top of the electrostatic adsorption tray, a second sensor is fixedly installed on the surface of the plasma cleaning equipment and the piezoelectric valve, and the plasma cleaning equipment, the automatic optical detector and the dispensing mechanism can move vertically inside the upper box body.

[0011] Furthermore, a rotating shaft is fixedly installed on the bottom of the electrostatic adsorption tray, and the rotating shaft is fixedly installed on the inner bottom of the upper box body.

[0012] Furthermore, a driving motor is fixedly installed inside the lower box body, and an output end of the driving motor is fixedly connected to the rotating shaft.

[0013] Furthermore, a moving slide rail is fixedly installed on the inner wall of the upper box body, and three groups of moving slide rails are provided, and all of them are fixedly connected to the plasma cleaning equipment, the automatic optical detector, and the piezoelectric valve.

[0014] Furthermore, a moving slide rail is fixedly installed on the inner wall of the upper box body, and three groups of moving slide rails are provided, and all of them are fixedly connected to the plasma cleaning equipment, the automatic optical detector, and the piezoelectric valve.

[0015] Furthermore, a circuit board and a controller are arranged inside the lower box body, the automatic optical detector and the second sensor are electrically connected to the controller, and the controller is electrically connected to the driving device.

[0016] Furthermore, a detection device is arranged inside the piezoelectric valve.

[0017] Furthermore, an operation window is provided on one side of the upper box body, and a sealing door is rotatably installed on one side of the upper box body through the operation window.

[0018] Furthermore, the precise intelligent control dispensing process has the following specific steps:

[0019] S1. The staff puts the sheet to be processed on the top of the electrostatic adsorption tray through the conveyor;

[0020] S2. The staff then fixedly connected the syringe barrel to the connecting tube by screwing the cap, and at the same time closed the dispensing mechanism inlet, and placed the interior of the upper box in a negative pressure environment through the negative pressure device, specifically 500-100000 Pa; 20-30°C;

[0021] S3, the electrostatic adsorption tray is turned on and rotated, and the automatic optical detector is aligned with the edge gap of the sheet;

[0022] S4, the plasma cleaning equipment and the dispensing head are sensed by the second sensor, and the second sensor sends an electrical signal to control the driving device to adjust the height and align with the edge seam of the sheet;

[0023] S5, the plasma cleaning equipment starts the cleaning and activation process, which ends after the sheet rotates one circle;

[0024] S6, the dispensing mechanism starts the dispensing process, which ends after the sheet rotates one circle;

[0025] S7. The automatic optical detector detects the dispensing position. If glue needs to be added, the dispensing device dispenses glue at the position where glue needs to be added. Repeat the operation until the automatic optical detector detects that the dispensing is completed and the negative pressure environment is released;

[0026] S8. The sheet after glue application is taken away by the conveying device, and the sheet without glue application is placed.

[0027] The beneficial effects of the present invention are as follows:

[0028] The present invention can spray various fluids, including but not limited to: base filler, silicone, sealant, conformal coating, UV adhesive and conductive epoxy resin, etc. through the dispensing mechanism, and can spray quickly, eliminate Z-axis error, spray accurately, have high repeatability, be easy to use and maintain, have an optional fluid preheater, be suitable for low-flow and high-flow applications, reduce bubbles generated during the dispensing process, perform double checks through the two sensors, adjust the height, reduce the Z-axis error, and improve the dispensing accuracy through the dispensing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of the present invention;

[0030] Figure 2 is a schematic top view of the electrostatic adsorption tray of the present invention;

[0031] Figure 3 is a schematic diagram of a drive motor of the present invention;

[0032] Figure 4 It is a schematic diagram of the dispensing mechanism of the present invention;

[0033] Figure 5 It is a schematic diagram of the plasma cleaning equipment of the present invention;

[0034] Figure 6 It is a schematic diagram of the automatic optical detector of the present invention.

[0035] Figure numerals: 1. upper box; 2. lower box; 3. electrostatic adsorption tray; 4. automatic optical detector; 5. plasma cleaning equipment; 6. dispensing mechanism; 61. piezoelectric valve; 62. dispensing head; 63. connecting pipe; 64. screw cap; 65. syringe barrel; 66. air inlet pipe; 7. rotating shaft; 8. driving motor; 9. moving slide rail; 10. operating window; 11. sealing door. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] A precision intelligent controlled glue dispensing device and glue dispensing process according to a preferred embodiment of the present invention will be described in detail below.

[0038] Embodiment 1, as Figure 1-Figure 6 As shown, it includes an upper box body 1, and a lower box body 2 is fixedly installed at the bottom of the upper box body 1;

[0039] An electrostatic adsorption tray 3 is arranged inside the upper box 1, and the electrostatic adsorption tray 3 can rotate inside the upper box 1. An automatic optical detector 4 is arranged inside the upper box 1. A plasma cleaning device 5 is arranged inside the upper box 1. A glue dispensing mechanism 6 is arranged inside the upper box 1.

[0040] The dispensing mechanism 6 includes a piezoelectric valve 61 arranged on one side of the upper box body 1, a dispensing head 62 is fixedly installed on the bottom of the piezoelectric valve 61, a connecting tube 63 is fixedly installed on one side of the dispensing head 62, a screw cap 64 is fixedly installed on the top of the connecting tube 63, an injection cylinder 65 is arranged on one side of the piezoelectric valve 61, the injection cylinder 65 is rotatably connected to the connecting tube 63 through the screw cap 64, an air inlet pipe 66 is fixedly installed on the top of the injection cylinder 65, an electromagnetic valve is arranged inside the air inlet pipe 66, a first sensor is arranged on the top of the electrostatic adsorption tray 3, a second sensor is fixedly installed on the surface of the plasma cleaning device 5 and the piezoelectric valve 61, and the plasma cleaning device 5, the automatic optical detector 4 and the dispensing mechanism 6 can move vertically inside the upper box body 1;

[0041] The staff first injects the dispensing material into the syringe 65, and then rotates the syringe 65 to connect it to the connecting tube 63 by screwing the cap 64. The dispensing mechanism 6 can spray various fluids through the set syringe 65, including but not limited to: bottom filler, silicone, sealant, conformal coating, UV adhesive and conductive epoxy resin, etc., and then place the sheet on the top of the electrostatic adsorption tray 3, and then make the interior of the upper box 1 in a negative pressure environment through the negative pressure device. At this time, the automatic optical detector 4 and the second sensor are started. When the electrostatic adsorption tray 3 rotates, the automatic optical detector 4 and the second sensor detect the position of the sheet, and at the same time, according to the position of the sheet, move vertically to adapt to the height of the sheet. The automatic optical detector 4 can be used to check the height of the sheet on the top of the electrostatic adsorption tray 3 and the edge of the sheet before and after dispensing, which can make The dispensing mechanism 6 can spray accurately when dispensing glue on the sheet. At this time, the plasma cleaning equipment 5 is started to activate the surface of the dirt on the edge surface of the sheet, and then the gas is injected into the syringe 65 through the air inlet pipe 66, and the fluid inside the syringe 65 is transported to the dispensing head 62 through the connecting pipe 63. The sheet is dispensed with glue by the dispensing head 62 until the dispensing is completed. Furthermore, a program is provided in the piezoelectric valve 61 to adjust key parameters such as the dispensing speed and the dispensing amount. At the same time, during the working process, the dispensing mechanism 6 is 90 degrees to the Z axis, parallel to the XY plane, and aligned with the gap between the two sheets. The dispensing head 62 is set to increase the glue coating area due to its ultra-thin design. Furthermore, the application fields of this device include but are not limited to: automotive field, semiconductor field, consumer electronics field, etc., and the processed sheets also belong to this field.

[0042] Embodiment 2, as Figure 1-Figure 3As shown, a rotating shaft 7 is fixedly installed at the bottom of the electrostatic adsorption tray 3, and the rotating shaft 7 is fixedly installed at the inner bottom of the upper box body 1. A driving motor 8 is fixedly installed inside the lower box body 2, and the output end of the driving motor 8 is fixedly connected to the rotating shaft 7;

[0043] The drive motor 8 is provided to drive the rotating shaft 7 to rotate, and the rotating shaft 7 can drive the electrostatic adsorption tray 3 to rotate when rotating, so that the sheet can be fully glued.

[0044] Embodiment three, as Figure 1 As shown, the inner wall of the upper box body 1 is fixedly installed with a moving slide rail 9, and the moving slide rail 9 is provided with three groups, and all are fixedly connected with the plasma cleaning equipment 5, the automatic optical detector 4, and the piezoelectric valve 61. The interior of the upper box body 1 is provided with a driving device, and the driving device drives the moving slide rail 9 to move;

[0045] The vertical positions of the plasma cleaning device 5 , the automatic optical detector 4 and the glue dispensing mechanism 6 can be adjusted by the provided moving slide rail 9 , so that glue dispensing can be performed on sheets of different heights.

[0046] Embodiment 4, as Figure 1-Figure 2 As shown, a circuit board and a controller are arranged inside the lower box 2, the automatic optical detector 4 and the second sensor are electrically connected to the controller, and the controller is electrically connected to the driving device;

[0047] The controller provided can control each component to perform the dispensing process on the sheet, which is convenient for the staff to use and maintain.

[0048] Embodiment 5, as Figure 1 As shown, a detection device is arranged inside the piezoelectric valve 61, an operation window 10 is opened on one side of the upper box body 1, and a sealing door 11 is rotatably installed on one side of the upper box body 1 through the operation window 10;

[0049] The detection device provided can detect whether the dispensing head 62 is clogged.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precision intelligent dispensing device, comprising an upper box (1), characterized in that: A lower box body (2) is fixedly mounted on the bottom of the upper box body (1); An electrostatic adsorption tray (3) is arranged inside the upper box (1), and the electrostatic adsorption tray (3) can rotate inside the upper box (1). An automatic optical detector (4) is arranged inside the upper box (1). A plasma cleaning device (5) is arranged inside the upper box (1). A glue dispensing mechanism (6) is arranged inside the upper box (1). The dispensing mechanism (6) comprises a piezoelectric valve (61) arranged on one side of the upper box (1); a dispensing head (62) is fixedly installed at the bottom of the piezoelectric valve (61); a connecting tube (63) is fixedly installed on one side of the dispensing head (62); a screw cap (64) is fixedly installed on the top of the connecting tube (63); an injection cylinder (65) is arranged on one side of the piezoelectric valve (61); the injection cylinder (65) is rotatably connected to the connecting tube (63) through the screw cap (64); an air intake pipe (66) is fixedly installed on the top of the injection cylinder (65); an electromagnetic valve is arranged inside the air intake pipe (66); a first sensor is arranged on the top of the electrostatic adsorption tray (3); a second sensor is fixedly installed on the surface of the plasma cleaning device (5) and the piezoelectric valve (61); the plasma cleaning device (5), the automatic optical detector (4) and the dispensing mechanism (6) are capable of vertical movement inside the upper box (1).

2. The precision intelligent dispensing equipment according to claim 1 is characterized in that: A rotating shaft (7) is fixedly mounted on the bottom of the electrostatic adsorption tray (3), and the rotating shaft (7) is fixedly mounted on the inner bottom of the upper box body (1).

3. The precision intelligent dispensing equipment according to claim 1 is characterized in that: A driving motor (8) is fixedly installed inside the lower box (2), and an output end of the driving motor (8) is fixedly connected to the rotating shaft (7).

4. The precision intelligent dispensing equipment according to claim 1 is characterized in that: A movable slide rail (9) is fixedly mounted on the inner wall of the upper box body (1), and three groups of the movable slide rails (9) are provided, and all are fixedly connected to the plasma cleaning equipment (5), the automatic optical detector (4), and the piezoelectric valve (61).

5. The precision intelligent dispensing equipment according to claim 4 is characterized in that: A driving device is arranged inside the upper box body (1), and the driving device drives the moving slide rail (9) to move.

6. The precision intelligent dispensing equipment according to claim 1, characterized in that: A circuit board and a controller are arranged inside the lower box (2); the automatic optical detector (4) and the second sensor are electrically connected to the controller; and the controller is electrically connected to the driving device.

7. The precision intelligent dispensing equipment according to claim 1, characterized in that: A detection device is arranged inside the piezoelectric valve (61).

8. The precision intelligent dispensing equipment according to claim 1, characterized in that: An operating window (10) is provided on one side of the upper box body (1), and a sealing door (11) is rotatably mounted on one side of the upper box body (1) through the operating window (10).

9. A precision intelligent dispensing process using any one of claims 1-8, characterized in that: The specific steps are: S1. A worker places the sheet to be processed on the top of the electrostatic adsorption tray (3) through a conveyor device; S2. The staff then fixedly connected the syringe (65) to the connecting tube (63) by screwing the cap (64), and at the same time closed the sample inlet of the dispensing mechanism (6), and placed the interior of the upper box (1) in a negative pressure environment, specifically (500-100000 Pa; 20-30° C.) through the negative pressure device; S3, the electrostatic adsorption tray (3) is turned on and the automatic optical detector (4) is aligned with the edge gap of the sheet; S4, the plasma cleaning device (5) and the glue dispensing head (62) are sensed by the second sensor, and the second sensor sends an electrical signal to control the driving device to adjust the height and align the edge seam of the sheet; S5, the plasma cleaning device (5) starts the cleaning and activation process, which ends after the sheet rotates one circle; S6, the glue dispensing mechanism (6) starts the glue dispensing process, which ends after the sheet rotates one circle; S7, the automatic optical detector (4) detects the dispensing position, and if glue replenishment is required, the dispensing device dispenses glue at the position where glue replenishment is required. Repeat the operation until the automatic optical detector (4) detects that the dispensing is completed and the negative pressure environment is released; S8. The sheet after glue application is taken away by the conveying device, and the sheet without glue application is placed.

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