CN216500393U

CN216500393U - Vacuum glue pouring machine with visual positioning glue pouring function

Info

Publication number: CN216500393U
Application number: CN202123038738.1U
Authority: CN
Inventors: 袁尊钢; 陈浩南
Original assignee: SHENZHEN XETAR TECHNOLOGY CO LTD
Current assignee: SHENZHEN XETAR TECHNOLOGY CO LTD
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-13
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a vacuum glue-pouring machine with a visual positioning glue-injecting function, which comprises a case, a working vacuum box fixed on the upper part of the case and a vacuumizing unit of the working vacuum box; the device also comprises a control unit, and a two-component metering pump, an adhesive injection module, a visual positioning module, a needle head correction module, a conveying line unit, a tray and a three-axis module which are respectively in communication connection with the control unit; the visual positioning module is used for acquiring images of a glue injection port of a product to be glue injected and transmitting an acquisition result to the control unit; the needle head correction module is used for detecting the position of the glue injection needle head and transmitting position information to the control unit. The vacuum glue-pouring machine of this patent, through the cooperative action of institutional advancement and relevant functional module, can enough detect the location and rectify the compensation to the injecting glue mouth position nonconformity that product size error arouses, can fix a position and rectify the compensation to the position of injecting glue syringe needle again to can realize accurate injecting glue operation and avoid hitting the product damage problem that the board leads to.

Description

Vacuum glue pouring machine with visual positioning glue pouring function

Technical Field

The utility model relates to the technical field of vacuum glue-pouring machines, in particular to a vacuum glue-pouring machine for accurately pouring glue into a vehicle-mounted charger (OBC) of a new energy automobile.

Background

On-vehicle charger (OBC, on board charger, also call on-vehicle charger) is as the essential core spare part of new energy automobile, its market scale enlarges along with the rapid growth in new energy automobile market, on-vehicle charger is to the power of charging, charging efficiency, weight, the heat dissipation, the vibration, waterproof dustproof and reliability all have the requirement strictest, potting technology in the manufacturing process also has higher requirement, not only need to glue under the vacuum environment and avoid producing the bubble, still need the injecting glue syringe needle to pass the circuit board injecting glue of on-vehicle charger simultaneously, just so can fill the gap between circuit board and the drain pan with the pouring sealant, however, the vacuum potting machine of prior art can't satisfy the requirement of this kind of product in the aspect of the embedment precision, the yields is low, can even can take place the injecting glue syringe needle and hit the circuit board and lead to the product condemned problem in the potting process.

The above background disclosure is only for the purpose of assisting in understanding the inventive concepts and technical solutions of the present application and does not necessarily pertain to the prior art of the present application, and should not be used to assess the novelty and inventive step of the present application in the absence of explicit evidence to suggest that such matter has been disclosed at the filing date of the present application.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a vacuum glue-pouring machine with a visual positioning glue-pouring function, which comprises a machine case, a working vacuum box and a vacuumizing unit, wherein the working vacuum box and the vacuumizing unit are fixed on the upper part of the machine case;

the device comprises a control unit, a two-component metering pump, a glue injection module, a visual positioning module, a needle head correction module, a conveying line unit, a tray and a three-axis module, wherein the two-component metering pump, the glue injection module, the visual positioning module, the needle head correction module, the conveying line unit and the three-axis module are respectively in communication connection with the control unit;

the two-component metering pump is installed outside the working vacuum box and is connected with the glue injection module through an external metering pipe and an internal metering pipe; the glue injection module is arranged on the triaxial module and moves along with the triaxial module, and comprises a glue mixing head, a glue injection valve and a glue injection needle head; the visual positioning module is arranged on the triaxial module and moves along with the triaxial module, and is used for acquiring images of a glue injection port of a product to be glue injected and transmitting an acquisition result to the control unit; the needle head correction module is arranged on a bottom plate in the working vacuum box and used for detecting the position of the glue injection needle head and transmitting position information to the control unit; the conveying line unit is arranged on a bottom plate in the working vacuum box and used for conveying and positioning the tray; the tray is used for bearing a product to be glue-poured; the three-axis module is used for driving the glue injection module and the vision positioning module to perform positioning and various point and/or line motions so as to complete vision positioning glue injection work.

The utility model may also employ the following alternatives/preferences:

the three-axis module comprises an X-axis module, a Y-axis module and a Z-axis module, and each axis module comprises a motor, a module body, a slide rail and a slide block; the Y-axis module is fixed inside the working vacuum box and is vertical to the front panel of the working vacuum box; the X-axis module is connected with the slide block of the Y-axis module and is vertical to the Y-axis module; the Z-axis module is vertically connected to the sliding block of the X-axis module; the glue injection module and the visual positioning module are installed on the sliding block of the Z-axis module.

The visual positioning module comprises a CCD camera, a lens, a light source and a mounting seat; the CCD camera the camera lens with the light source is from last to coaxial setting in proper order down, the CCD camera with camera lens coaxial coupling, the CCD camera with the light source is connected respectively on the mount pad, the mount pad with the slider of Z axle module is connected.

Mix gluey head and advance gluey mouth including a left side and advance gluey mouth with the right side, a left side advance gluey mouth with the right side advance gluey mouth respectively with inside metering tube connects, injecting glue valve upper end with mix gluey first bottom exit linkage, the lower extreme installation the injecting glue syringe needle, mix gluey head the injecting glue valve with the vertical coaxial coupling of injecting glue syringe needle, and the hole link up.

The conveying line unit comprises a tray conveying line, a tray jacking positioning mechanism and a blocking cylinder, the tray conveying line is arranged on a bottom plate in the working vacuum box, and the tray jacking positioning mechanism and the blocking cylinder are arranged in the middle position of the inner side of the tray conveying line; the tray jacking and positioning mechanism is used for jacking the tray and repeatedly positioning the tray; the blocking cylinder is used for stopping the tray.

And a waste material box is also arranged on the outer side of the tray conveying line.

The needle correction module comprises a laser sensor and a fixed support, the laser sensor is installed at the top of the fixed support and used for detecting the position of the glue injection needle, and the lower end of the fixed support is installed on a bottom plate inside the working vacuum box.

The laser sensor can emit two mutually perpendicular lights so as to accurately detect the position of the glue injection needle head.

The working vacuum box also comprises an automatic lifting door, a safety grating, a front manual door, a maintenance door and a vacuum tube; the automatic lifting door is arranged on the left side and the right side of the working vacuum box in pairs and symmetrically, the safety gratings are arranged on the two sides of the automatic lifting door, the maintenance door is arranged on the rear side of the working vacuum box, and the vacuumizing unit is communicated with the inside of the working vacuum box through the vacuum tube and is used for vacuumizing the working vacuum box.

The front manual door is arranged on the front panel of the working vacuum box and sealed with the front panel of the working vacuum box through an O-shaped ring, and the front manual door is further provided with a glass window for observing the inside of the working vacuum box.

The beneficial effects of the utility model include:

this vacuum glue-pouring machine with vision positioning injecting glue function, through the cooperative action of institutional advancement and relevant functional module, can enough detect the location and rectify the compensation to the injecting glue mouth position nonconformity that product size error arouses, can fix a position and rectify the compensation to the position of injecting glue syringe needle again to can realize accurate injecting glue operation and avoid hitting the product damage problem that the board leads to.

Drawings

Fig. 1 is a schematic front side view of a vacuum glue-pouring machine according to an embodiment of the utility model.

Fig. 2 is another perspective (backside) schematic view of the vacuum glue-pouring machine of the embodiment of fig. 1.

Fig. 3 is a partial cross-sectional view of the vacuum-filled dispenser of the embodiment of fig. 1 (with the working vacuum box section in section).

FIG. 4 is a perspective view of a Z-axis slide, a glue injection module, a visual positioning module, and a product to be glue injected according to one embodiment.

FIG. 5 is a partial perspective view of the conveyor line unit and pallet of one embodiment.

FIG. 6 is a perspective view of a needle tip calibration module according to one embodiment.

Detailed Description

The utility model will be further described with reference to the accompanying figures 1-6 and the specific embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the utility model or its application. The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.

The inventor researches and discovers that the traditional vacuum glue-pouring machine has the following defects:

(1) there is certain clearance between product tray and the transfer chain, and the tray keeps off to stop that the repeated positioning accuracy at the injecting glue station is low, and the injecting glue syringe needle can't guarantee all accurately to insert the gap between circuit board and the drain pan at every turn and carry out the injecting glue, often appears because of the inaccurate injecting glue syringe needle that causes of product tray location hits the circuit board, leads to the product to scrap, causes very big economic loss.

(2) Because vacuum encapsulation is the last process in the product production process, and product circuit board size is great, has more processing technology before the encapsulation, and the size of itself can't accomplish very accurately, so there is the inconsistent condition of size in product self, also can lead to the injecting glue syringe needle to hit the circuit board when the encapsulating because of repeated positioning accuracy is low like this, causes the product to scrap.

(3) Because the injecting glue syringe needle belongs to the consumptive material, all need change every shift, change injecting glue syringe needle back, new syringe needle can have positional deviation with former syringe needle, also can cause the unable accurate gap between inserting circuit board and the drain pan of injecting glue syringe needle like this, has increased and has collided the board and cause the condemned risk of product.

In order to solve the above technical problem, the present embodiment provides a vacuum glue-pouring machine which can not only avoid plate collision, but also meet the precise glue-pouring requirement of the OBC product, as shown in fig. 1-2, the vacuum glue-pouring machine includes a machine box 19, a working vacuum box 20 fixed on the upper portion of the machine box 19, and a vacuum unit 27 thereof, wherein the vacuum unit 27 may be a vacuum pump or a central control pipeline connected to other vacuum-pumping equipment, and the top of the working vacuum box 20 is preferably further provided with a sheet metal outer cover 22. In this embodiment, the working vacuum box 20 further includes a front manual door 21, a safety grating 24, a maintenance door 25, a vacuum tube 26, and two sets of same automatic lifting doors 23; the automatic lifting doors 23 are symmetrically arranged on the left side and the right side of the working vacuum box 20 in pairs, the safety gratings 24 are arranged on the two sides of the automatic lifting doors, the maintenance door 25 is arranged on the rear side of the working vacuum box 20, and the vacuum pump 27 is communicated with the inside of the working vacuum box 20 through the vacuum tube 26 and is used for vacuumizing the working vacuum box 20; the front manual door 21 is arranged on the front panel of the working vacuum box 20 and is sealed with the front panel of the working vacuum box 20 through an O-shaped ring. Preferably, the front manual door 21 is provided with a glass window, so that the working state inside the working vacuum box 20 can be observed at any time.

As shown in fig. 1-3, the vacuum glue-pouring machine with the function of visual positioning glue-pouring further comprises a control unit 28, a two-component metering pump 1, a glue-pouring module 4, a visual positioning module 5, a needle head correction module 9, a conveyor line unit 10 and a three-axis module. The control unit 28 is fixed on the right side outside the working vacuum box 20, and the two-component metering pump 1 is installed on the rear side outside the working vacuum box 20, is connected with the glue injection module 4 through an external metering pipe 2, a threaded joint and an internal metering pipe 3, and is used for distributing, metering and pumping glue. The injecting glue module 4 the vision orientation module 5 the syringe needle correction module 9 the transfer chain unit 10 with the triaxial module is all located in the work vacuum chamber 20.

As shown in fig. 3 to 4, the glue injection module 4 includes: a glue mixing head 41, a glue injection valve 42 and a glue injection needle 43. Mix gluey head 41's a left side advance gluey mouth and right side advance gluey mouth respectively with inside metering tube 3 is connected, injecting glue valve 42 upper end with mix gluey head 41 bottom exit linkage, its lower extreme installation injecting glue syringe needle 43, mix gluey head 41 injecting glue valve 42 with the vertical coaxial coupling of injecting glue syringe needle 43, and the hole link up.

As shown in fig. 3, the three-axis module includes an X-axis module 14, a Y-axis module 13, and a Z-axis module 15, and each of the axis modules includes a motor, a module body, a slide rail, and a slider. The Y-axis module 13 is fixed on the left side plate inside the working vacuum box 20 through an adapter plate 12 and is vertical to the front panel of the working vacuum box 20, and the X-axis module 14 is connected with the slide block of the Y-axis module 13 and is vertical to the Y-axis module 13; the Z-axis module 15 is vertically connected to a slide block of the X-axis module 14; and the glue injection module 4 and the vision positioning module 5 are arranged on a Z-axis sliding block 8 of the Z-axis module 15. The three-axis module is used for driving the glue injection module 4 and the vision positioning module 5 to perform CCD photographing positioning and movement of various points and/or lines, and the vision positioning glue injection work is completed.

As shown in fig. 4, the visual positioning module 5 includes: a CCD camera 51, a lens 52, a light source 54, and a mount 53; the CCD camera 51, the lens 52 and the light source 54 are vertically and coaxially arranged from top to bottom; the CCD camera 51 is coaxially connected with the lens 52 through threads, the CCD camera 51 and the light source 54 are respectively connected onto the mounting seat 53, and the mounting seat 53 is integrally L-shaped and is connected with the Z-axis sliding block 8.

As shown in fig. 3 and 5, the conveyor line unit 10 includes: tray transfer chain 101, tray jacking positioning mechanism 102, block cylinder 103, tray transfer chain 101 sets up on the inside bottom plate of work vacuum box 20, tray jacking positioning mechanism 102 with block cylinder 103 and set up at the inboard central point of tray transfer chain 101, block cylinder 103 and be used for keeping off product tray 7. Preferably, the waste material box 11 is further arranged on the outer side of the tray conveying line 101 and used for preventing solidification and glue discharging during glue injection waiting and debugging and glue discharging before work.

As shown in fig. 4, the product to be filled 6 includes a circuit board 61 and a bottom case 62. As shown in fig. 5, the tray 7 is further provided with a groove for placing and positioning the product 6 to be glue-poured, and the product 6 to be glue-poured is matched with the groove without a gap, so that the product 6 to be glue-poured is accurately positioned in the tray 7.

As shown in fig. 6, the needle calibration module 9 includes: the device comprises a laser sensor 91 and a fixed support 92, wherein the laser sensor 91 is installed at the top of the fixed support 92, and the lower end of the fixed support 92 is installed on the bottom plate inside the working vacuum box 20. In this embodiment, the laser sensor 91 can emit laser beams perpendicular to each other in two directions, so that the glue injection needle 43 can be more conveniently and accurately detected and positioned. The laser sensor 91 preferably adopts an integrated laser sensor sold on the market, and adopts an open design, so that the product is small and compact, and the installation and the setting are simple and convenient.

Through the above-mentioned vacuum glue-pouring machine of modified, only need be equipped with corresponding controller can avoid hitting the board (if injecting glue syringe needle 43 hits and breaks circuit board 61) for the glue-pouring operation of on-vehicle machine that charges can go on smoothly, but also can realize accurate encapsulating, promotes the yield and the use reliability of product by a wide margin.

The working process of the vacuum glue-pouring machine with the visual positioning glue-pouring function is as follows: the tray 7 full of the products 6 to be glue-poured enters the tray conveying line 101 in the working vacuum box 20 from the left automatic lifting door 23, the tray 7 is stopped by the blocking cylinder 103 after reaching the glue injection position, the control unit 28 controls the automatic lifting doors 23 on the left and right sides to be closed, the vacuum pump 27 is started to vacuumize, and the vacuumizing is stopped when the vacuum degree in the working vacuum box 20 reaches a set vacuum value. While vacuumizing, the three-axis module drives the glue injection module 4 to move above the needle correction module 9, the laser sensor 91 detects the position of the replaced glue injection needle 43, and then the position information is transmitted to the control unit 28, the control unit 28 calculates the offset of the replaced glue injection needle 43 and the original glue injection needle 43 in each direction of the XYZ axis, and performs coordinate compensation of the XYZ axis, so that the position deviation of the replaced glue injection needle 43 is eliminated, and the risk of damaging the product due to needle replacement is solved. It should be noted that this step is usually only required after the glue injection needle 43 is replaced or when the glue injection needle 43 is disassembled or assembled.

Then, the tray jacking and positioning mechanism 102 jacks up the tray 7, and the two positioning pins arranged on the tray jacking and positioning mechanism 102 are inserted into the two corresponding positioning bushes in the tray 7 to accurately position the tray 7, so that the repeated positioning accuracy of the tray 7 can be controlled within 0.2mm, and the repeated positioning accuracy of the tray 7 is greatly improved.

Then, the control unit 28 starts a glue filling program, the three-axis module moves to the position above the product 6 to be glue filled according to the program, the CCD camera 51 is started to photograph the glue injection port of the product 6 to be glue filled, images of the circuit board 61 and the bottom case 62 around the glue injection port are collected and transmitted to the control unit 28 for image processing, the offset of the glue injection port is calculated (the product image template sampled and photographed in the initial setting is compared as a reference), and then the offset is fed back to the three-axis module to complete position correction. And sequentially photographing, calculating and correcting each product 6 to be glue-poured to achieve high-precision positioning of each product 6 to be glue-poured so as to prevent the problem that the product is damaged by a needle head due to inconsistent positions of glue injection ports caused by dimension errors among the products.

Finally, after the correction is completed, the three-axis module drives the glue injection module 4 to accurately insert the glue injection needle 43 into a gap between the circuit board 61 and the bottom shell 62, and the glue injection needle penetrates through the circuit board 61 to directly inject glue into a gap between the reverse side of the circuit board 61 and the bottom shell 62, so that the glue injection operation of each product 6 to be glue injected is sequentially completed.

In this embodiment, the vision positioning module may also be referred to as a glue injection port positioning module, and is to shoot the glue injection port of the product 6 to be glue injected by using a camera, then calculate a deviation value by comparing the front and the back by using an image recognition technology, and automatically correct the position of the glue injection port by using software. The needle head correction module can also be called as a needle head positioning module and is used for detecting the position of the glue injection needle head and then automatically correcting the position of the glue injection needle head through the position coordinate difference of the new needle head and the old needle head.

It is worth mentioning that: the control unit 28, the laser sensor 91, the CCD camera 51, etc. required in this embodiment are all products/technologies in the prior art, and only the related functions thereof need to be utilized in this patent.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the utility model, and all the properties or uses are considered to be within the scope of the utility model.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.

Claims

1. A vacuum glue-pouring machine with visual positioning glue-pouring function is characterized by comprising a machine case, a working vacuum box and a vacuumizing unit, wherein the working vacuum box and the vacuumizing unit are fixed on the upper part of the machine case;

2. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 1, characterized in that the three-axis module comprises an X-axis module, a Y-axis module and a Z-axis module, and each axis module comprises a motor, a module body, a slide rail and a slide block;

the Y-axis module is fixed inside the working vacuum box and is vertical to the front panel of the working vacuum box; the X-axis module is connected with the slide block of the Y-axis module and is vertical to the Y-axis module; the Z-axis module is vertically connected to the sliding block of the X-axis module; the glue injection module and the visual positioning module are installed on the sliding block of the Z-axis module.

3. The vacuum glue-pouring machine with the function of visual positioning glue-injection according to claim 2, characterized in that the visual positioning module comprises a CCD camera, a lens, a light source and a mounting seat;

the CCD camera the camera lens with the light source is from last to coaxial setting in proper order down, the CCD camera with camera lens coaxial coupling, the CCD camera with the light source is connected respectively on the mount pad, the mount pad with the slider of Z axle module is connected.

4. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 1, characterized in that the glue-mixing head comprises a left glue-inlet and a right glue-inlet, the left glue-inlet and the right glue-inlet are respectively connected with the internal metering tube, the upper end of the glue-injection valve is connected with the outlet at the bottom of the glue-mixing head, the lower end of the glue-injection valve is provided with the glue-injection needle, and the glue-mixing head, the glue-injection valve and the glue-injection needle are vertically and coaxially connected and have a through inner hole.

5. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 1, characterized in that the conveyor line unit comprises a tray conveyor line, a tray jacking and positioning mechanism and a blocking cylinder, the tray conveyor line is arranged on the bottom plate inside the working vacuum box, and the tray jacking and positioning mechanism and the blocking cylinder are arranged at the central position inside the tray conveyor line; the tray jacking and positioning mechanism is used for jacking the tray and repeatedly positioning the tray; the blocking cylinder is used for stopping the tray.

6. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 5, characterized in that a waste material box is further arranged outside the tray conveying line.

7. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 1, wherein the needle head correction module comprises a laser sensor and a fixed support, the laser sensor is mounted at the top of the fixed support and used for detecting the position of the glue-injection needle head, and the lower end of the fixed support is mounted on a bottom plate in the working vacuum box.

8. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to claim 7, characterized in that the laser sensor can emit two mutually perpendicular lights to accurately detect the position of the glue-injection needle.

9. The vacuum glue-pouring machine with the function of visually positioning glue-injection according to any one of claims 1 to 8, characterized in that the working vacuum box further comprises an automatic lifting door, a safety grating, a front manual door, a maintenance door and a vacuum tube;

the automatic lifting door is arranged on the left side and the right side of the working vacuum box in pairs and symmetrically, the safety gratings are arranged on the two sides of the automatic lifting door, the maintenance door is arranged on the rear side of the working vacuum box, and the vacuumizing unit is communicated with the inside of the working vacuum box through the vacuum tube and is used for vacuumizing the working vacuum box.

10. The vacuum glue-pouring machine with the function of visually positioning glue injection according to claim 9, characterized in that the front manual door is arranged on the front panel of the working vacuum box and sealed with the front panel of the working vacuum box through an O-ring, and the front manual door is further provided with a glass window for observing the inside of the working vacuum box.