Multi-stage filtering equipment suitable for film laminating machine and film laminating machine system

Abstract

The utility model provides a multi-stage filtering device suitable for a film laminating machine and a film laminating machine system, the multi-stage filtering device comprises a primary filter, a second-stage filtering device and a third-stage filtering device which are connected in sequence, the primary filter is a filter with adjustable air pressure and flow, the second-stage filtering device comprises at least one second-stage filter, and the third-stage filtering device comprises at least one third-stage filter. The third-stage filtering device comprises at least one third-stage filter, and the third-stage filter is a filter with a visible filter element. According to the multi-stage filtering equipment, three-stage filtering is formed between the external air source and the air blowing device, two-stage filtering is formed among the external air source, the air cylinder and the vacuum generator, and the multi-stage filtering equipment is combined with a film laminating machine in the current market for use; the problem that the cleanliness of airflow entering an air blowing device, a vacuum generator and an air cylinder cannot meet the requirement can be solved.

Description

Technical Field

[0001] This utility model relates to a filtration device, and more particularly to a multi-stage filtration device suitable for a laminating machine. Background Technology

[0002] In the touch display manufacturing process, one step involves applying a PET protective film to the touch display product. This application is done using a laminating machine. (See also...) Figure 1 and 2 The laminating machine includes a film feeding device 400 for conveying film, an air blowing device 200 located in front of the film feeding device 400 for blowing up the film, a film conveying device 300 for holding the film and moving the film, and a screen conveying device 100 for conveying a touch screen display.

[0003] Protective film A has an adhesive side that adheres to release paper C. This adhesive side of protective film A is also the side that will be bonded to the touch display screen B. Protective film A is evenly spaced on release paper C. The film feeding device 400 reaches an inflection point while conveying protective film A and release paper C. At this point, protective film A continues to be conveyed forward, gradually separating from release paper C. The air blowing device 200 has multiple air holes, exerting a pushing force g against gravity on protective film A. Simultaneously, the film conveying device 300 exerts a suction force g against gravity on protective film A. The film conveying device 300 moves along with protective film A to directly above the air blowing device 200. Afterward, the film conveying device 300, carrying protective film A, leaves the air blowing device 200 and moves towards the screen conveying device 100. Meanwhile, the screen conveying device 100 conveys the touch screen B to the film application position. Before the film conveying device 300 applies the protective film A to the touch screen B, the alignment device (not shown in the figure) installed on the film conveying device 300 will correct the position of the protective film A to prevent it from being applied crookedly.

[0004] The air blowing device 200, the film conveying device 300 (including a vacuum generator and a cylinder), the screen conveying device 100 (including a cylinder), and the positioning device (including a cylinder) all require a clean air source. In particular, the air blowing device 200 has very high requirements for the cleanliness of the air source. Currently, most laminating machines on the market do not have the corresponding air source filtration level, which results in the airflow blown out by the air blowing device 200 containing impurities, contaminating the adhesive surface of the protective film A. At the same time, the airflow entering the vacuum generator and the cylinder contains impurities, which will also affect the service life of the vacuum generator and the cylinder. Utility Model Content

[0005] The technical problem to be solved by this invention is that the air filtration effect of the current laminating machines on the market does not meet the production requirements.

[0006] To solve the above-mentioned technical problems, this utility model provides a multi-stage filtration device suitable for laminating machines. This multi-stage filtration device forms a three-stage filtration between the external air source and the blowing device, and a two-stage filtration between the external air source and the cylinder and vacuum generator. When this multi-stage filtration device is used in combination with laminating machines currently on the market, it can solve the problem that the cleanliness of the airflow entering the blowing device, vacuum generator and cylinder does not meet the requirements.

[0007] The multi-stage filtration device for a laminating machine provided by this utility model includes a primary filter, a secondary filter, and a tertiary filter connected in sequence. The primary filter is a filter with adjustable air pressure and flow rate, and its air inlet is used to connect to an external air source. The secondary filter includes at least one secondary filter, and its air outlet is used to connect to the air inlets of the tertiary filter, the cylinder, and the vacuum generator. The tertiary filter includes at least one tertiary filter, which is a filter with a visible filter element, and its air outlet is used to connect to the air inlet of the blowing device.

[0008] Workshop personnel can periodically check the cleanliness of the tertiary filter element. If the cleanliness of the tertiary filter element is found to have decreased, the primary, secondary, and tertiary filter elements should be replaced in a timely manner to ensure that the cleanliness of the airflow entering the blowing device, vacuum generator, and cylinder meets production requirements.

[0009] Preferably, the tertiary filter, primary filter, and secondary filter are oil-water separation filters with progressively larger filter elements. The tertiary filter is mainly used to indicate whether the primary and secondary filters need to be replaced; using a smaller filter size achieves a balance between cost and function. The primary filter is mainly used to regulate the air pressure and flow rate; using a medium-sized filter achieves a balance between cost and function. If a small-sized filter is used, the flow rate will not meet the requirements of the laminating machine. The secondary filter is mainly used to filter impurities; using a larger filter size can reduce the frequency of filter inspection and replacement by workshop personnel, thus reducing their workload.

[0010] Preferably, the secondary filter is an air-storing filter to ensure a stable airflow supply.

[0011] Preferably, the secondary filtration device includes at least two secondary filters connected in series, which can reduce the frequency of filter inspection and replacement by workshop personnel and reduce their workload.

[0012] Preferably, the number of three-stage filters corresponds to the number of air-blowing pipes in the air-blowing device, and different three-stage filters are connected in parallel. Different three-stage filters are used to connect to different air-blowing pipes to ensure the cleanliness of the airflow supplied to the air-blowing device.

[0013] This utility model also provides a laminating machine system, including a laminating machine, which includes an air blowing device, a cylinder, a vacuum generator, and a multi-stage filtration device provided by this utility model. The air outlet of the secondary filtration device is connected to the air inlet of the cylinder and the vacuum generator, and the air outlet of the tertiary filtration device is connected to the air inlet of the air blowing device.

[0014] When assembling this multi-stage filtration equipment with the laminating machine, if there is insufficient space inside the laminating machine, the primary filter and secondary filter can be placed outside the laminating machine, while the tertiary filter can be installed inside the laminating machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the operation of a film-coating machine;

[0016] Figure 2 for Figure 1 A schematic diagram of the operation of the air blowing device and the membrane conveying device shown;

[0017] Figure 3 This utility model's embodiment one multi-stage filtration device and Figure 2 A schematic diagram showing the connection of the air blowing device.

[0018] Figure 4 This is a schematic diagram of the laminating machine system of Embodiment 2 of this utility model. Detailed Implementation Example 1

[0019] This embodiment provides a multi-stage filtration device suitable for a laminating machine. See [link / reference] Figure 3The multi-stage filtration device 500 includes a primary filter 1, a secondary filter, and a tertiary filter connected in sequence. The primary filter 1 is a filter with adjustable air pressure and flow rate, and its inlet is used to connect to an external air source. The secondary filter includes three secondary filters 2 connected in series. The outlet of the secondary filter (i.e., the outlet of the last secondary filter 2 along the airflow direction) is used to connect to the inlets of the tertiary filter, cylinders (distributed in the membrane conveying device 300, screen conveying device 100, and positioning device, not shown in the figure), and vacuum generator (distributed in the membrane conveying device 300, not shown in the figure). The tertiary filter includes multiple tertiary filters 3 connected in parallel (only two tertiary filters 3 are schematically shown in the figure). The tertiary filters 3 are filters with visible filter elements. The outlet of the tertiary filter (including the outlets of different tertiary filters 3) is used to connect to the inlet of the blowing device 200 (including the inlets of different blowing pipes). The air blowing device 200 includes multiple air blowing pipes, one of which supplies air to a row of air holes in the air blowing device 200. The tertiary filter 3, primary filter 1, and secondary filter 2 are oil-water separation filters with progressively larger filter elements. As needed, those skilled in the art can change the number and specifications of the tertiary filter 3, primary filter 1, and secondary filter 2.

[0020] During the operation of the laminating machine, an external air source supplies airflow to the primary filter 1. Workshop personnel can operate the primary filter 1 to adjust the air pressure and flow rate. The airflow enters the secondary filtration device from the outlet of the primary filter 1, flowing sequentially through three secondary filters 2. The secondary filters 2 have an air storage function, which helps to maintain a stable airflow entering the laminating machine. After exiting the secondary filtration device, the airflow is split into different air supply pipes. These different air supply pipes are used to connect to different air-requiring devices of the laminating machine (including different air supply pipes of the air blowing device 200, the vacuum generator and cylinder of the film conveying device 300, the cylinder of the screen conveying device 100, and the cylinder of the positioning device). Among them, the air supply pipe used to connect to the air blowing pipe of the air blowing device 200 is not directly connected to the air blowing pipe. To ensure the cleanliness of the airflow in different air blowing pipes, the air supply pipe is connected to the corresponding tertiary filter 3. The airflow enters the tertiary filter 3 from the air supply pipe and then flows from the outlet of the tertiary filter 3 to the corresponding air blowing pipe. Workshop personnel regularly inspect the tertiary filter 3, that is, observe the cleanliness of the filter element of the tertiary filter 3. If the cleanliness of the filter element of the tertiary filter 3 is found to have decreased, the filter elements of the tertiary filter 3, primary filter 1 and secondary filter 2 are replaced, or the tertiary filter 3, primary filter 1 and secondary filter 2 are replaced directly. Example 2

[0021] This embodiment provides a laminating machine system; see [link / reference] Figure 4The laminating machine system includes the multi-stage filtration device 500 provided in Embodiment 1. The primary filter 1 and the secondary filter 2 of the multi-stage filtration device 500 are located outside the laminating machine X, and the tertiary filter 3 is located inside the laminating machine X.

Claims

1. A multi-stage filtration device suitable for a laminating machine, the laminating machine comprising an air blowing device, a cylinder, and a vacuum generator, characterized in that: The multi-stage filtration device includes a primary filter, a secondary filter, and a tertiary filter connected in sequence. The primary filter is a filter with adjustable air pressure and flow rate, and its inlet is used to connect to an external air source. The secondary filter includes at least one secondary filter, and its outlet is used to connect to the inlets of the tertiary filter, the cylinder, and the vacuum generator. The tertiary filter includes at least one tertiary filter, which is a filter with a visible filter element, and its outlet is used to connect to the inlet of the air blowing device.

2. The multi-stage filtration device as described in claim 1, characterized in that: The three-stage filter, primary filter, and secondary filter are oil-water separation filters with progressively larger filter elements.

3. The multi-stage filtration device as described in claim 1 or 2, characterized in that: The secondary filter is a filter that can store gas.

4. The multi-stage filtration device as described in claim 1 or 2, characterized in that: The secondary filtration device includes at least two secondary filters connected in series.

5. The multi-stage filtration device as described in claim 3, characterized in that: The secondary filtration device includes at least two secondary filters connected in series.

6. The multi-stage filtration device as described in claim 1 or 2, characterized in that: The number of three-stage filters corresponds to the number of air-blowing pipes in the air-blowing device. Different three-stage filters are connected in parallel, and different three-stage filters are used to connect to different air-blowing pipes.

7. A laminating machine system, comprising a laminating machine including an air blowing device, a cylinder, and a vacuum generator, characterized in that: The coating machine system also includes a multi-stage filtration device as described in any one of claims 1 to 6, wherein the outlet of the secondary filtration device is connected to the inlet of the cylinder and the vacuum generator, and the outlet of the tertiary filtration device is connected to the inlet of the blowing device.

8. The laminating machine system as described in claim 7, characterized in that: The primary and secondary filters are located outside the laminating machine, while the tertiary filter is installed inside the laminating machine.

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