CN-121988503-A - Vacuum glue feeding machine and vacuum glue feeding process

Abstract

The invention discloses a vacuum glue feeding machine and a vacuum glue feeding process, wherein the vacuum glue feeding machine comprises a frame and a plurality of box bodies with working cavities inside, a glue injection pipe and a non-contact type liquid level detection device are arranged in the working cavities, pressure detection equipment, a vacuum pump and glue feeding equipment are arranged on the frame, the vacuum glue feeding process comprises the steps of S2, adjusting the vacuum degree to P1, decompressing and standing after keeping time T1, S3, adjusting the vacuum degree to P2, decompressing and standing after keeping time T2, S4, continuously and repeatedly circulating the step S3 for a plurality of times, and the non-contact type liquid level detection device detects the liquid level of glue in a container in real time in the process of the steps S2 to S4, and automatically supplements the glue if the liquid level is lower than a lower limit value. The invention provides a vacuum glue feeding machine and a vacuum glue feeding process, which can detect the vacuum degree in the vacuum glue feeding process and the liquid level of glue in a container in real time, and can automatically supplement the glue under the condition of reducing the glue.

Inventors

• LIU JIE
• DU MAOHUA
• LIU ZHAOPING

Assignees

• 宁波石墨烯创新中心有限公司

Dates

Publication Date

20260508

Application Date

20260205

Claims (20)

1. 1. A vacuum glue feeding machine comprises a frame (1) and is characterized in that a plurality of box bodies (2) with working cavities (4) inside are arranged on the frame (1), sampling ports communicated with the working cavities (4) and a box cover (3) used for opening and closing the sampling ports are arranged on the box bodies (2), working areas used for placing containers (5) are arranged in the middle positions of the working cavities (4), glue injection pipes (6) and non-contact type liquid level detection devices are arranged in the working cavities (4), the glue injection pipes (6) are arranged to be capable of injecting glue into the containers (5) when the containers (5) are placed in the working areas, the non-contact type liquid level detection devices are arranged to detect the liquid level of the glue in the containers (5) when the containers (5) are placed in the working areas, and pressure detection devices used for detecting the vacuum degree in the working cavities (4), vacuum pumps used for adjusting the vacuum degree in the working cavities (4) and glue supply devices used for supplying the glue, and liquid outlet ends of the glue supply devices are communicated with the glue injection pipes (6) through liquid supply pipelines.
2. 2. The vacuum glue feeder according to claim 1, wherein the container (5) is arranged to allow passage through the sampling port, the top of the container (5) having an opening for taking and placing the product.
3. 3. The vacuum glue feeder according to claim 1, wherein the box cover (3) is provided with a transparent first observation window (3.1).
4. 4. The vacuum glue feeder of claim 3, wherein the box cover (3) is arranged on one side of the box body (2), and a transparent second observation window (11) is arranged at the top of the box body (2).
5. 5. The vacuum glue feeder as defined in claim 1, wherein the side wall of the box body (2) is provided with a suction hole (12), and the suction end of the vacuum pump is communicated with the suction hole (12).
6. 6. The vacuum glue feeder of claim 5, wherein the side wall of the box body (2) is provided with a pressure relief hole (13), and a pressure relief valve (14) is arranged on the pressure relief hole (13).
7. 7. The vacuum glue feeder according to claim 6, characterized in that the pressure detection device comprises a pressure gauge (9) and/or a pressure sensor (10); the pressure gauge (9) is positioned on the box body (2) and is used for detecting the pressure gauge (9) in the working cavity (4); The pressure sensor (10) is arranged on a gas pipe communicated with the pressure relief hole (13) and is used for detecting the pressure in the gas pipe.
8. 8. The vacuum glue feeder of claim 1, wherein the non-contact liquid level detection device is a laser liquid level meter (7), and the laser liquid level meter (7) is fixedly connected with the box body (2) through a bracket (8).
9. 9. A vacuum glue feeding process is characterized by comprising the following process steps of a vacuum glue feeding machine according to any one of the claims 1-8: S1, placing a product in a container (5) in a corresponding working cavity (4), and injecting glue solution into the container (5) through a glue injection pipe (6) to enable the product in the container (5) to be immersed in the glue solution; S2, adjusting the vacuum degree in the working cavity (4) to P1, and releasing pressure and standing after the time T1 is kept; S3, adjusting the vacuum degree in the working cavity (4) to P2, wherein P2 is more than P1, and releasing pressure and standing after the time T2 is kept; S4, continuously and repeatedly cycling the step S3 for a plurality of times; In the process from step S2 to step S4, the non-contact liquid level detection device detects the liquid level of the glue solution in the container (5) in real time, and if the liquid level is lower than the set lower limit value, the glue supply device is controlled to supplement the glue solution into the container (5).
10. 10. The vacuum dispensing process of claim 9, wherein step S2 is repeated several times before step S3.
11. 11. The vacuum glue feeding process according to claim 9, wherein after the vacuum degree in the working chamber (4) is adjusted to P1 in the step S2, whether glue solution in the container (5) overflows out of the container (5) is observed through the observation window, if the glue solution overflows, the process is stopped, otherwise, the current vacuum degree P1 is maintained and the time T1 is maintained.
12. 12. The vacuum glue feeding process according to claim 9, wherein the vacuum degree in the working chamber (4) in the step S3 is stepped up to P2 according to the increment of each Px.
13. 13. The vacuum glue feeding process according to claim 12, wherein P1 is 0.04-0.06 MPa, P2 is 0.08-0.1 MPa, and Px is 0.002-0.0070 MPa.
14. 14. The vacuum glue feeding process according to claim 12, wherein the time T6 for the vacuum degree in the working chamber (4) to rise to P2 in the step S3 is 40-120 min.
15. 15. The vacuum glue feeding process according to claim 9, wherein the vacuum pump is automatically started when the vacuum degree of the working chamber (4) in the holding time T1 or the holding time T2 is reduced by more than Py, and the vacuum degree in the working chamber (4) is restored to the standard value corresponding to the current holding time.
16. 16. The vacuum glue feeding process according to claim 15, wherein Py is 4-6 Kpa.
17. 17. The vacuum glue feeding process according to claim 9, wherein S4, step S3 is continuously repeated for a plurality of times, and the holding time T2 and the time for pressure relief and standing in step S3 are increased with the increase of the number of times of the circulation.
18. 18. The vacuum glue feeding process according to any one of claims 9 to 17, wherein the holding time, the time for pressure release and standing and the number of cycles of the product in the working chamber (4) in steps S2 to S4 are selected based on the volume of the product before step S1.
19. 19. The vacuum glue feeding process according to claim 18, wherein the product has a length of 20-40 cm, a width of 20-40 cm and a height of 25-45 cm; T1 is 10-20 min; T2 is 30-180 min; And (3) repeating the step S2 for 3-8 times before the step S3.
20. 20. The vacuum glue feeding process according to claim 19, wherein the time T3 for pressure relief and standing after the time T1 is maintained in the step S2 is 10-20 min.

Description

Vacuum glue feeding machine and vacuum glue feeding process Technical Field The invention relates to the technical field of vacuum glue feeding, in particular to a vacuum glue feeding machine and a vacuum glue feeding process. Background Vacuum glue feeding is also called vacuum glue filling, and is a very common glue filling technology in the fields of high-end manufacturing such as electronic packaging, automobile electronics, new energy and the like. The existing vacuum glue feeding only utilizes a vacuum glue feeding machine to generate a vacuum environment with constant vacuum degree, so that the product can finish automatic glue filling under the vacuum environment. Along with the continuous improvement of the product glue filling precision requirement, the existing vacuum glue feeding technology adopting constant vacuum degree cannot meet the product glue feeding requirement. In addition, existing vacuum glue feeders are typically single working chambers. On the one hand, a single working cavity is used for carrying out vacuum glue feeding on a product in a production stage, and on the other hand, if a comparison group is required to be arranged in the single working cavity in a vacuum glue feeding test stage of the product, interference can be caused among the groups in the same working cavity, particularly among the comparison groups with different glue solution components, and volatile matters generated by a glue solution solvent can cause the mutual influence among the groups to interfere final test precision. More importantly, the existing vacuum glue feeding machine only monitors the current vacuum degree in the working cavity, cannot detect the glue liquid level of the soaked product in real time in the testing process, and the glue liquid level in the container is changed as part of glue liquid enters the product and the glue liquid solvent volatilizes. Obviously, the existing vacuum glue feeder does not have the function of learning the liquid level change of the glue solution in the test stage. Disclosure of Invention The invention aims to solve at least one of the technical problems in the related art to a certain extent, and provides a vacuum glue feeding machine and a vacuum glue feeding process, which can detect the vacuum degree in the vacuum glue feeding process and the liquid level of glue liquid in a container in real time and can automatically supplement the glue liquid under the condition of reducing the glue liquid. In a first aspect, the invention provides a vacuum glue feeder, which comprises a frame, wherein a plurality of boxes with working cavities inside are arranged on the frame, containers for containing samples are arranged in the working cavities of the boxes, sampling ports communicated with the working cavities and a box cover for opening and closing the sampling ports are arranged on the boxes, a working area for placing the containers is arranged in the middle of the working cavities, glue injection pipes and a non-contact type liquid level detection device are arranged in the working cavities, the glue injection pipes can be used for injecting glue into the containers when the containers are placed in the working area, the non-contact type liquid level detection device is used for detecting the liquid level of the glue in the containers when the containers are placed in the working area, and pressure detection equipment for detecting the vacuum degree in the working cavities, a vacuum pump for adjusting the vacuum degree in the working cavities and glue supply equipment for providing the glue solution are arranged on the frame, and a liquid outlet end of the glue supply equipment is communicated with the glue injection pipes through a liquid supply pipeline. In the first aspect, be equipped with a plurality of working chambers simultaneously in the frame, not only can use a plurality of working chambers simultaneously to carry out vacuum simultaneously and advance gluey processing to a plurality of products at production stage, improve production efficiency, can real-time detection working intracavity vacuum degree through pressure detection equipment when sample vacuum advances gluey test moreover, can real-time detection container internal glue liquid level through non-contact liquid level detection device, can supply the glue solution through the automatic supplementary glue solution of glue supply equipment after the glue solution liquid level reduces in the container. Optionally, the container is arranged to allow passage through the sampling port, the top of the container having an opening for access to the product. Optionally, the case cover is provided with a transparent first observation window. The condition in the working cavity can be observed through the first observation window, and the vacuum glue feeding machine is suspended in time when glue solution overflows from the container. In addition, when the container is transparent, the product and the g