Glass transparent film spraying device

Abstract

The present invention designs a glass transparent film spraying device, which belongs to the field of surface coating processing, and includes a spray box, a spray gun module, a spray gun slide, a fan module and a spray controller. A spray conveyor belt passes through the spray box, a spray gun slide is installed at the front of the spray box, and a fan module is installed at the rear. The inner wall of the top of the spray box is affixed with an anti-drip sponge, and a front filter and a rear filter are installed at the rear of the spray box. The bottoms of the front filter and the rear filter are respectively provided with grooves, and a residual liquid recovery pipe is provided at the grooves. The spraying device of the present invention can be used on a glass spraying production line, and the device has the functions of spraying a glass transparent film, spray guiding, residual fog recovery, dust prevention, drip prevention, reducing moire and streaks, saving paint and preventing pollution.

Description

Technical Field

[0001] The invention belongs to the field of surface coating processing, and in particular relates to a glass transparent film spraying device. Background Art

[0002] At present, glass spraying transparent films, such as thermal insulation films, are generally completed in the spray room using low-pressure automatic spray guns, mixed air automatic spray guns or ultrasonic spray guns. Spraying rooms are generally open structures, but glass spraying transparent films are different from other non-transparent plates. Any dust, impurities, droplets, fluff or other particles or their condensation are more easily detected by the eyes and judged as unqualified products. Because the human eye can recognize particles larger than 0.1mm in good light, and they are often used as appearance quality standards, the product qualification rate is low.

[0003] In addition, glass spraying involves multiple processes such as cleaning, pretreatment, spraying, leveling, ventilation, etc. The airflow in the space is greatly disturbed, and the random airflow will affect the low-pressure spraying effect, including the appearance of moire and stripes. Therefore, the spray must be diverted and controlled to improve the spraying yield. Summary of the invention

[0004] The object of the present invention is to provide a glass transparent film spraying device to solve the problems raised in the above technical background.

[0005] The present invention provides the following technical solutions:

[0006] A glass transparent film spraying device comprises a spray box, a spray gun module, a spray gun slide, a fan module and a spray controller. A spray conveyor belt passes through the spray box, a spray gun slide is installed at the front of the spray box, and a fan module is installed at the rear. An anti-drip sponge is attached to the inner wall of the top of the spray box, and a front filter and a rear filter are installed at the rear of the spray box. Grooves are respectively provided at the bottom of the front filter and the rear filter, and residual liquid recovery pipes are provided at the grooves.

[0007] Preferably, the width of the interior of the spray box is consistent with the width of the spray conveyor belt, the length of the interior of the spray box is 0.6-1.5m, the height is 0.3-1m, and observation glasses are installed on the side walls of both sides of the spray box.

[0008] Preferably, the spray gun module includes a spray gun, which is one of a low-pressure spray gun, an airless spray gun, a mixed air spray gun and an ultrasonic spray gun, and a paint filter is also installed on the spray gun.

[0009] Preferably, the spray gun slide can move left and right on the slide rail, and the moving range is consistent with the width of the spray conveyor belt. The spray gun module is installed on the spray gun slide, and the spray gun module is moved left and right to perform reciprocating cycle spraying.

[0010] Preferably, the spray controller adopts a PLC controller, and the spray controller is connected to the spray gun slide, the spray gun and the fan module interface.

[0011] Preferably, the front filter consists of a frame and a stainless steel filter. The frame is fixed inside the spray box. The stainless steel filter can be pulled out and inserted from the frame. A slit is opened on the side wall of the spray box to facilitate the stainless steel filter to enter from the slit and be inserted into the frame, or to be pulled out from the frame and taken out from the slit.

[0012] Preferably, the height of the stainless steel filter does not exceed half of the height of the box body, and when the stainless steel filter screen is inserted into the frame, the bottom and side edges of the stainless steel filter screen are in sealing contact with the spray box body.

[0013] Preferably, the filtration pore size of the front filter is 5-100 μm, and the filtration pore size of the rear filter is 5-100 μm.

[0014] Preferably, the fan module includes a plurality of fans, and the fans are arranged side by side with equal intervals.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention provides a spray box with dust prevention, spray diversion, filtration, waste liquid recovery and other functions. The spray box is mounted on a spray conveyor belt and constitutes a component of a spray line. The spray box is relatively closed, which not only blocks falling dust, but also greatly reduces the impact of random airflow.

[0017] (2) The fan module in the present invention can draw the low-pressure spray mist generated by the spray gun into uniform mist, and guide it in parallel to the glass surface, avoiding the random influence of the purified airflow circulating in the spray workshop, thereby reducing the cloud pattern or streak phenomenon on the glass spray surface, and avoiding the uneven coating thickness caused by the random falling of micron-level spray mist due to turbulence. The fan module can guide the spray mist to be evenly distributed on the entire glass surface under the control of the spray controller, effectively avoiding the occurrence of uncontrollable turbulence.

[0018] (3) The fan module installed in the spray box uses the gravity sedimentation principle of gas-liquid diversion when pulling the spray mist. In the process of parallel pulling, the spray path is elongated, so that more paint particles fall on the glass surface, reducing the waste of rebound and random drifting, and saving paint.

[0019] (4) The fan module installed in the spray box also utilizes the baffle principle of gas-liquid diversion when pulling the spray mist. When the spray is pulled parallel to the filter, due to the different specific gravities of the gas and the paint droplets, the gas will bend upward after encountering the filter. However, due to inertia, the paint droplets continue to have a forward speed. The forward-moving droplets are adsorbed on the wall of the filter, and due to the action of gravity, they are gathered downward to the groove and discharged through the residual liquid recovery pipe.

[0020] (5) The inner surface of the upper cover of the spray box of the present invention is affixed with an anti-drip sponge, and the paint droplets condensed on the upper part are absorbed by the anti-drip sponge and can be maintained for a long time without treatment. When the anti-drip sponge reaches saturation, only the anti-drip sponge needs to be replaced, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding and description of the present invention.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] The following are marked in the figure: 1. Spray box; 2. Spray gun module; 3. Spray gun slide; 4. Fan module; 5. Anti-drip sponge; 6. Front filter; 7. Rear filter; 8. Residual liquid recovery pipe; 9. Glass to be processed. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative results all fall within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, a glass transparent film spraying device includes a spray box 1, a spray gun module 2, a spray gun slide 3, a fan module 4 and a spray controller, a spray conveyor belt passes through the spray box 1, observation glasses (not shown in the figure) are installed on both side walls of the spray box 1, the spray gun slide 3 is installed at the front of the spray box 1, the fan module 4 is installed at the rear, an anti-drip sponge 5 is attached to the inner wall of the top of the spray box 1, a front filter 6 and a rear filter 7 are installed at the rear of the spray box 1, grooves are respectively provided at the bottom of the front filter 6 and the rear filter 7, and a residual liquid recovery pipe 8 is provided at the groove.

[0027] The spray gun module 2 includes a spray gun, which is also equipped with a paint filter, mounted on a spray gun slide 3, and is carried by the spray gun slide 3 to move left and right for reciprocating spraying, and the moving range is consistent with the width of the spray conveyor belt. The spray controller adopts a PLC controller, and the spray controller is connected to the spray gun slide, the spray gun module and the fan module 4 interface.

[0028] The front filter 6 is composed of a frame and a stainless steel filter. The frame is fixed inside the spray box 1. The stainless steel filter can be pulled out and inserted from the frame. A slit is opened on the side wall of the spray box 1 to facilitate the stainless steel filter to enter from the slit and be inserted into the frame, or to be pulled out from the frame and taken out from the slit. When the stainless steel filter is inserted into the frame, the bottom and side of the stainless steel filter are in sealing contact with the spray box. The filtration aperture of the front filter 6 is 5-100μm, and the filtration aperture of the rear filter 7 is 5-100μm.

[0029] In this embodiment, a spray box 1 with a width of 2m, a length of 1m and a height of 0.6m is set up on a 2m wide spray conveyor belt. A 5mm anti-drip sponge 5 is attached to the inner wall of the top of the spray box 1, and a 2m wide spray gun slide 3 is installed at the front of the spray box 1. A front filter 6, a rear filter 7 and a fan module 4 are installed at the rear of the spray box 1. The front filter 6 is 20cm high. The fan module 4 includes 18 fans installed side by side with equal intervals, and the fan size is 10cm×10cm, and the wind speed is adjustable.

[0030] During use, when the glass is transported to the lower part of the spray gun slide 3 by the spray conveyor belt, the spray gun module starts scanning and spraying according to a predetermined program, and the paint mist is pulled forward by the fan module 4 and evenly distributed on the glass. The excess mist is first blocked by the front filter 6 installed at the rear of the spray box 1. According to the baffle principle, the gas in the mist bypasses the front filter 6 upward, while the paint droplets in the mist continue to move forward due to inertia and are intercepted by the front filter 6. The remaining paint droplets in the gas bypassing the front filter 6 are filtered and intercepted by the rear filter 7.

[0031] Results: By using the glass transparent film spraying device of this embodiment, there is basically no visible particles on the glass surface, and the moire and streak are greatly reduced, which meets the quality requirements of conventional visual appearance inspection.

[0032] Example 2

[0033] Compared with Example 1, in this embodiment, a spray box 1 with a width of 2m, a length of 0.6m and a height of 0.6m is set up on a 2m wide spray conveyor belt, a 5mm anti-drip sponge 5 is affixed to the inner wall of the top of the spray box 1, a 2m wide spray gun slide 3 is installed at the front of the spray box 1, and a front filter 6, a rear filter 7 and a fan module 4 are installed at the rear of the spray box 1. The front filter 6 is 20cm high, and the fan module 4 includes 18 fans installed side by side with equal intervals, and the fan size is 10cm×10cm, and the wind speed is adjustable.

[0034] During use, when the glass is transported to the lower part of the spray gun slide 3 by the spray conveyor belt, the spray gun module starts scanning and spraying according to a predetermined program, and the paint mist is pulled forward by the fan module 4 and evenly distributed on the glass. The excess mist is first blocked by the front filter 6 installed at the outlet of the spray box 1. According to the baffle principle, the gas in the mist bypasses the front filter 6 upward, while the paint droplets in the mist continue to move forward due to inertia and are intercepted by the front filter 6. The remaining paint droplets in the gas bypassing the front filter 6 are filtered and intercepted by the rear filter 7.

[0035] Results: With the glass transparent film spraying device of this embodiment, there is basically no visible particles on the glass surface, and the moire and streak are greatly reduced, which meets the quality requirements of conventional visual appearance inspection, but the amount of paint is increased by 20% compared with Example 1. This means that when the length of the spray box 1 is short, the spray mist does not have enough time to fall on the glass, resulting in part of the paint being wasted.

[0036] Example 3

[0037] Compared with Example 1, in this embodiment, a spray box 1 with a width of 2m, a length of 1.5m and a height of 0.6m is set up on a 2m wide spray conveyor belt, a 5mm anti-drip sponge 5 is affixed to the inner wall of the top of the spray box 1, a 2m wide spray gun slide 3 is installed at the front of the spray box 1, and a front filter 6, a rear filter 7 and a fan module 4 are installed at the rear of the spray box 1. The front filter 6 is 20cm high, and the fan module 4 includes 18 fans installed side by side with equal intervals, and the fan size is 10cm×10cm, and the wind speed is adjustable.

[0038] During use, when the glass is transported to the lower part of the spray gun slide 3 by the spray conveyor belt, the spray gun module starts scanning and spraying according to a predetermined program, and the paint mist is pulled forward by the fan module 4 and evenly distributed on the glass. The excess mist is first blocked by the front filter 6 installed at the outlet of the spray box 1. According to the baffle principle, the gas in the mist bypasses the front filter 6 upward, while the paint droplets in the mist continue to move forward due to inertia and are intercepted by the front filter 6. The remaining paint droplets in the gas bypassing the front filter 6 are filtered and intercepted by the rear filter 7.

[0039] Results: With the glass transparent film spraying device of this embodiment, there is basically no visible particles on the glass surface, but the moire and streaks are obvious. The reason for this is that when the spray box 1 is too long compared with Example 1, the drainage effect of the fan module 4 is reduced, and the spray mist cannot be evenly distributed on the glass surface, and the moire in the spraying cannot be completely eliminated.

[0040] Although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any improvement using the inventive concept will be included in the protection scope of the patent right of this patent.

Claims

1. A glass transparent film spraying device, characterized in that: It includes a spray box, a spray gun module, a spray gun slide, a fan module and a spray controller. A spray conveyor belt passes through the spray box. A spray gun slide is installed at the front of the spray box, and a fan module is installed at the rear. An anti-drip sponge is attached to the inner wall of the top of the spray box. A front filter and a rear filter are installed at the rear of the spray box. Grooves are respectively provided at the bottom of the front filter and the rear filter, and a residual liquid recovery pipe is provided at the groove. The spray gun slide can move left and right on the slide rail, and the moving range is consistent with the width of the spray conveyor belt. The spray gun module is installed on the spray gun slide, and the spray gun slide carries the spray gun module to move left and right to perform reciprocating cycle spraying; The fan module can draw the low-pressure spray mist generated by the spray gun module into uniform mist and guide it parallel to the glass surface; The front filter is composed of a frame and a stainless steel filter. The frame is fixed inside the spray box. The stainless steel filter can be pulled out and inserted from the frame. A slit is opened on the side wall of the spray box so that the stainless steel filter can enter from the slit and be inserted into the frame, or be pulled out from the frame and taken out from the slit. The width inside the spray box is consistent with the width of the spray conveyor belt. The length inside the spray box is 0.6-1.5m, and the height is 0.3-1m. Observation glasses are installed on the side walls on both sides of the spray box.

2. A glass transparent film spraying device according to claim 1, characterized in that: The spray gun module comprises a spray gun, which is one of a low-pressure spray gun, an airless spray gun, a mixed air spray gun and an ultrasonic spray gun, and a paint filter is also installed on the spray gun.

3. A glass transparent film spraying device according to claim 1, characterized in that: The spray controller adopts a PLC controller, and the spray controller is connected with the spray gun slide, the spray gun module and the fan module interface.

4. The glass transparent film spraying device according to claim 1, characterized in that: The height of the stainless steel filter does not exceed half of the height of the box body. When the stainless steel filter screen is inserted into the frame, the bottom and side edges of the stainless steel filter screen are in sealing contact with the spray box body.

5. The glass transparent film spraying device according to claim 1, characterized in that: The filtration aperture of the front filter is 5-100 μm, and the filtration aperture of the rear filter is 5-100 μm.

6. The glass transparent film spraying device according to claim 1, characterized in that: The fan module includes a plurality of fans, and the fans are arranged side by side with equal intervals.

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