Printing device for film products

Abstract

The utility model discloses a film product printing device which comprises a printing platen, a lower cover plate and a vacuum assembly, and the lower cover plate is located below the printing platen and fixed relative to the printing platen. A first adsorption area and a second adsorption area are arranged on the printing table plate, and the second adsorption area is arranged on the periphery of the first adsorption area in a surrounding mode with the first adsorption area as the center. The first adsorption area and the lower cover plate form a first vacuum chamber, the second adsorption area and the lower cover plate form a second vacuum chamber, the second vacuum chamber is located on the periphery of the first vacuum chamber, and the first vacuum chamber and the second vacuum chamber are connected with the vacuum assembly. The printing platen is provided with the product adsorption areas of at least two sizes at the same time, the printing platen can be compatible with various specifications, the utilization rate of equipment is improved to the maximum extent, the investment cost of the equipment is reduced, the occupied space of factory equipment is reduced, and therefore the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of film product production, in particular to a printing device for film products. Background Art

[0002] The demand for domestic production of high-temperature co-fired ceramic (HTCC) packaging tube and shell products and multilayer inductor products continues to grow, and such thin-film products are inseparable from the printing process. Equipment production capacity and new product development are affected by the capabilities and compatibility of printing equipment, resulting in long development and delivery cycles, as well as a large number of investments in special equipment and high costs.

[0003] Existing printing machines for film products are usually only suitable for products of one specification, which is not conducive to the development and production of products of multiple specifications, or requires the purchase of equipment of more specifications, which occupies a large area and has high investment costs. Utility Model Content

[0004] The utility model aims to solve the technical problem that the existing thin film product printing machine cannot be suitable for various product specifications, and provides a printing device for thin film products.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A printing device for thin film products, used for adsorbing products of a first size and a second size, wherein the second size product is larger than the first size product, the printing device comprises a printing platen, a lower cover plate and a vacuum assembly, wherein the lower cover plate is located below the printing platen and is fixed relative to the printing platen; a first adsorption area and a second adsorption area are arranged on the printing platen, wherein the second adsorption area is centered on the first adsorption area and surrounds the periphery of the first adsorption area; the first adsorption area is used for adsorbing products of a first size, and the first adsorption area and the second adsorption area work together to adsorb products of a second size; the first adsorption area and the lower cover plate form a first vacuum chamber, the second adsorption area and the lower cover plate form a second vacuum chamber, the second vacuum chamber is located periphery of the first vacuum chamber, and the first vacuum chamber and the second vacuum chamber are respectively connected to the vacuum assembly.

[0007] In some embodiments of the present invention, the lower cover plate is divided into a first lower cover plate area and a second lower cover plate area, the first lower cover plate area corresponds to the first adsorption area, and the first lower cover plate area is connected to the bottom of the first adsorption area to form a first vacuum chamber; the second lower cover plate area corresponds to the second adsorption area, and the second lower cover plate area is connected to the bottom of the second adsorption area to form a second vacuum chamber.

[0008] In some embodiments of the present invention, a first sealing ring and a second sealing ring are further included, wherein the first sealing ring is located at the periphery of the first lower cover plate area, and the first sealing ring, the first lower cover plate area, and the first adsorption area form a first vacuum chamber; the second sealing ring is located at the periphery of the second lower cover plate area, and the second sealing ring, the second lower cover plate area, and the second adsorption area form a second vacuum chamber.

[0009] In some embodiments of the present invention, at least two grooves are formed on the lower cover plate, for installing the first sealing ring and the second sealing ring respectively.

[0010] In some embodiments of the present invention, the vacuum assembly includes a first vacuum air pipe, a second vacuum air pipe and a vacuum pumping member, the first vacuum chamber is connected to the vacuum pumping member through the first vacuum air pipe, and the second vacuum chamber is connected to the vacuum pumping member through the second vacuum air pipe.

[0011] In some embodiments of the present invention, an outer frame adsorption area is further provided on the printing platen, and the outer frame adsorption area is provided at the periphery of the second adsorption area.

[0012] In some embodiments of the present invention, the lower cover plate can also be divided into a third lower cover plate area, the third lower cover plate area is located outside the second lower cover plate area, and the third lower cover plate area is relatively connected to the lower part of the outer frame adsorption area to form a third vacuum chamber.

[0013] In some embodiments of the utility model, the printing device also includes a third sealing ring, which is located outside the second sealing ring, and the third sealing ring, the third lower cover plate area, and the outer frame adsorption area form a third vacuum chamber; the vacuum component also includes a third vacuum air pipe, and the third vacuum chamber is connected to the vacuum pump through the third vacuum air pipe.

[0014] In some embodiments of the present invention, outer frame adsorption holes are provided on the outer frame adsorption area.

[0015] In some embodiments of the present invention, the material of the printing plate is a ceramic loose hole plate.

[0016] The utility model has the following beneficial effects:

[0017] The printing device for thin film products proposed by the utility model has at least two sizes of product adsorption areas on its printing platen, namely the second adsorption area and the first adsorption area. The two sizes of product adsorption areas cooperate with the lower cover plate to form a first vacuum chamber and a second vacuum chamber respectively, which can adsorb products of different specifications, and the second adsorption area is arranged at the periphery of the first adsorption area, and the second vacuum chamber is arranged at the periphery of the first vacuum chamber to be compatible with the requirements of vacuum adsorption printing of small and large sizes. The utility model can maximize the utilization rate of the equipment, reduce the investment cost of the equipment, and reduce the space occupied by factory equipment by achieving compatibility with multiple specifications. It is more applicable in the product development stage, especially to avoid the situation in which too much investment in special equipment in the development stage causes waste of funds and equipment, thereby saving production costs.

[0018] In addition, in some embodiments of the present invention, by adding an outer frame adsorption area and a third vacuum chamber outside the second adsorption area to adsorb products with frames, the compatibility of a device is further expanded.

[0019] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a printing device for a thin film product in Example 1;

[0021] Figure 2 is a schematic diagram of the back side of the printing device for the thin film product in Example 1;

[0022] Figure 3 is a schematic diagram of a printing platen of a printing device for a thin film product in Example 1;

[0023] The reference numerals are as follows:

[0024] 1. Printing plate; 11. Small size product adsorption area; 12. Large size product adsorption area; 13. Outer frame adsorption area, 14 Outer frame adsorption hole;

[0025] 2. Lower cover plate; 21. Lower cover plate for small-sized vacuum adsorption area; 22. Mounting groove for outer sealing ring of adsorption area for larger-sized products; 23. Vacuum air passage for adsorption hole of outer frame; 24. Mounting groove for outer sealing ring of adsorption hole of outer frame;

[0026] 3. External sealing ring of the outer frame adsorption hole; 4. Sealing ring outside the adsorption area of ​​larger-sized products; 5. Sealing ring of the adsorption area of ​​small-sized products; 6. Air pipe of the vacuum air duct of the outer frame adsorption hole; 7. Vacuum air pipe in the adsorption area of ​​small-sized products; 8. Vacuum air pipe in the adsorption area of ​​larger-sized products. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0028] It should be noted that the directional terms such as left, right, up, down, top, and bottom in this embodiment are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0029] The following embodiment of the utility model proposes a printing device for thin film products, including a printing platen 1, a lower cover plate 2 and a vacuum assembly, wherein the lower cover plate 2 is located below the printing platen 1 and is fixed relative to the printing platen 1; a first adsorption area and a second adsorption area are provided on the printing platen, wherein the second adsorption area is centered on the first adsorption area and is arranged around the periphery of the first adsorption area; the first adsorption area and the lower cover plate form a first vacuum chamber, and the second adsorption area and the lower cover plate form a second vacuum chamber, wherein the second vacuum chamber is located at the periphery of the first vacuum chamber, and the first vacuum chamber and the second vacuum chamber are respectively connected to the vacuum assembly. The first adsorption area is used to adsorb products of a first size, and the first adsorption area and the second adsorption area are used together to adsorb products of a second size, wherein the products of the second size are larger than the products of the first size. In some embodiments thereof, the first adsorption area and the second adsorption area are both ceramic loose-pore plates. On a printing platen that only includes the first adsorption area and the second adsorption area, the central area is the first adsorption area, and the area outside the first adsorption area is the second adsorption area; the first adsorption area and the second adsorption area are independent of each other, and the first adsorption area can perform adsorption work independently and is used to adsorb small-sized products; when the second adsorption area needs to work, it must work with the cooperation of the first adsorption area, that is, the first adsorption area and the second adsorption area are used together to adsorb larger-sized products, so that the size of the product that can be adsorbed when the second adsorption area is working is larger than the size of the product that can be adsorbed when only the first adsorption area is working.

[0030] Furthermore, the lower cover plate is divided into a first lower cover plate area and a second lower cover plate area. The first lower cover plate area corresponds to the first adsorption area, and the first lower cover plate area is connected to the bottom of the first adsorption area to form a first vacuum chamber; the second lower cover plate area corresponds to the second adsorption area, and the second lower cover plate area is connected to the bottom of the second adsorption area to form a second vacuum chamber.

[0031] Furthermore, it also includes a first sealing ring and a second sealing ring, the first sealing ring is located at the periphery of the first lower cover plate area, and the first sealing ring, the first lower cover plate area, and the first adsorption area form a first vacuum chamber; the second sealing ring is located at the periphery of the second lower cover plate area, and the second sealing ring, the second lower cover plate area, and the second adsorption area form a second vacuum chamber.

[0032] Furthermore, the vacuum assembly includes a first vacuum air pipe, a second vacuum air pipe and a vacuum pumping member, the first vacuum chamber is connected to the vacuum pumping member through the first vacuum air pipe, and the second vacuum chamber is connected to the vacuum pumping member through the second vacuum air pipe.

[0033] Furthermore, the printing platen is also provided with an outer frame adsorption area, which is arranged at the periphery of the second adsorption area, so that the second adsorption area is an area located between the first adsorption area and the outer frame adsorption area. The lower cover plate can also be divided into a third lower cover plate area, which is located at the periphery of the second lower cover plate area, and the third lower cover plate area is relatively connected to the lower part of the outer frame adsorption area to form a third vacuum chamber.

[0034] Furthermore, the printing device also includes a third sealing ring, which is located outside the second sealing ring, and the third sealing ring, the third lower cover area, and the outer frame adsorption area form a third vacuum chamber; the vacuum component also includes a third vacuum air pipe, and the third vacuum chamber is connected to the vacuum pump through the third vacuum air pipe.

[0035] Embodiment 1:

[0036] This embodiment exemplarily provides a printing device for a thin film product. Figure 1 , which includes a printing plate 1 and a lower cover plate 2, such as Figure 3 As shown, the printing platen 1 is provided with a small-sized product adsorption area 11, a larger-sized product adsorption area 12 and an outer frame adsorption area 13, wherein the first adsorption area in the above utility model embodiment is exemplified as the small-sized product adsorption area 11 in this embodiment, and the above second adsorption area is exemplified as the larger-sized product adsorption area 12, wherein the periphery of the small-sized product adsorption area 11 is provided with a larger-sized product adsorption area 12, and the periphery of the larger-sized product adsorption area 12 is provided with an outer frame adsorption area 13, and the outer frame adsorption area 13 is provided with an outer frame adsorption hole 14, which is for adsorption of the outer frame of the larger-sized product, and is also the adsorption hole for the outer part of the outer frame of the small-sized framed product. In this embodiment, the material of the outer frame adsorption area 13 is different from that of the small-sized product adsorption area 11 and the larger-sized product adsorption area 12, and the material of the outer frame adsorption area 13 does not have a vacuum adsorption function, and its adsorption function is realized through the outer frame adsorption holes 14 thereon.

[0037] The lower cover plate 2 is located below the printing platen 1 and is fixed relative to the printing platen 1. A small-size vacuum adsorption area lower cover plate 21 is provided on the upper surface of the lower cover plate 2. A sealing ring 5 of the small-size product adsorption area is provided on the periphery of the small-size vacuum adsorption area lower cover plate 21. A mounting groove 22 of an outer sealing ring of a larger-size product adsorption area is provided on the periphery of the sealing ring 5 of the small-size product adsorption area. A sealing ring 4 outside the larger-size product adsorption area is installed in the mounting groove 22 of the outer sealing ring of the larger-size product adsorption area. An outer frame adsorption hole vacuum air duct 23 is provided on the periphery of the sealing ring 4 outside the larger-size product adsorption area. An outer frame adsorption hole outer sealing ring mounting groove 24 is provided on the periphery of the outer frame adsorption hole vacuum air duct 23. An outer frame adsorption hole outer sealing ring mounting groove 24 is provided. An outer frame adsorption hole outer sealing ring 3 is provided in the mounting groove 24 of the outer frame adsorption hole outer sealing ring.

[0038] See also Figure 2 The printing device also includes a vacuum component, which includes a first vacuum air pipe, a second vacuum air pipe and a vacuum pumping part. The first vacuum air pipe in this embodiment is specifically a vacuum air pipe 7 in the small-sized product adsorption area, and the second vacuum air pipe in this embodiment is specifically a vacuum air pipe 8 in the larger-sized product adsorption area; the lower cover plate 21 of the small-sized vacuum adsorption area is provided with a groove at a position corresponding to the small-sized product adsorption area 11 in the middle of the surface of the lower cover plate 2, and the lower cover plate 21 of the small-sized vacuum adsorption area and the sealing ring 5 of the small-sized product adsorption area on its periphery, as well as the small-sized product adsorption area 11 are closed to form a vacuum chamber of the small-sized product adsorption area, that is, the first vacuum chamber in the above-mentioned utility model embodiment, through the vacuum pipe under the vacuum chamber, that is, the vacuum air pipe 7 of the small-sized product adsorption area, the vacuum air pipe 7 of the small-sized product adsorption area is connected to the vacuum pumping part.

[0039] The middle area surrounded by the sealing ring 5 in the small-sized product adsorption area and the sealing ring 4 outside the larger-sized product adsorption area is the lower cover plate of the larger-sized product adsorption area. A groove is also opened at the position of the lower cover plate 2 corresponding to the larger-sized product adsorption area 12. The lower cover plate of the larger-sized vacuum adsorption area, the sealing ring 5 in the small-sized product adsorption area, the sealing ring 4 outside the larger-sized product adsorption area and the larger-sized product adsorption area 12 form a vacuum chamber of the larger-sized product adsorption area, that is, the above-mentioned second vacuum chamber, and the vacuum tubes are combined by opening holes on both sides of the vacuum chamber of the larger-sized product adsorption area, that is, the vacuum air pipe 8 of the larger-sized product adsorption area, and the vacuum air pipe 8 of the larger-sized product adsorption area is connected to the vacuum pump.

[0040] The present embodiment also includes a third vacuum chamber, and the middle area surrounded by the sealing ring 4 outside the larger-sized product adsorption area and the sealing ring 3 outside the outer frame adsorption hole is the lower cover plate of the outer frame adsorption area. The lower cover plate of the outer frame adsorption area, the sealing ring 4 outside the larger-sized product adsorption area, the sealing ring 3 outside the outer frame adsorption hole and the outer frame adsorption area 13 surround the third vacuum chamber. The vacuum chamber is exemplified as the outer frame adsorption hole vacuum air channel 23 in the present embodiment, which is an annular air channel, corresponding to the outer frame adsorption 14 in the outer frame adsorption area 13 in the printing platen 1, and the vacuum pipelines are merged by opening holes on both sides of the outer frame adsorption hole vacuum air channel 23, that is, the air pipe 6 of the outer frame adsorption hole vacuum air channel, and the air pipe 6 of the outer frame adsorption hole vacuum air channel is connected to the vacuum pump.

[0041] Embodiment 2:

[0042] In order to solve the problem that the development and production of products of various specifications are incompatible when printing existing thin film products, this embodiment provides a printing device for thin film products on the basis of Embodiment 1, which adds peripheral vacuum adsorption of larger-sized products to the periphery of the small-sized raw tape printing vacuum platform to be compatible with meeting the requirements of various sizes.

[0043] In the present embodiment, a printing device compatible with six-inch products with and without frames and eight-inch film products with and without frames is provided, which includes: a printing platen 1, the printing platen 1 is provided with a six-inch product adsorption area, the periphery of the six-inch product adsorption area is provided with an eight-inch product adsorption area, the periphery of the eight-inch product adsorption area is provided with outer frame adsorption holes, the small-size product adsorption area 11 in Example 1 is exemplified as a six-inch product adsorption area in this embodiment, and the larger-size product adsorption area 12 is exemplified as an eight-inch product adsorption area.

[0044] The printing device also includes a lower cover plate 2: the lower cover plate 2 is located below the printing platen 1 and is fixed relative to the printing platen 1, a six-inch vacuum adsorption area lower cover plate is provided on the upper surface of the lower cover plate 2, a six-inch product adsorption area sealing ring is provided on the periphery of the six-inch vacuum adsorption area lower cover plate, an eight-inch product adsorption area outer sealing ring mounting groove is provided on the periphery of the six-inch product adsorption area sealing ring, an eight-inch product adsorption area outer sealing ring is mounted in the mounting groove of the eight-inch product adsorption area outer sealing ring, an outer frame adsorption area outer sealing ring is mounted on the periphery of the eight-inch product adsorption area outer sealing ring, an outer frame adsorption hole vacuum air duct is provided on the periphery of the outer frame adsorption hole vacuum air duct, an outer frame adsorption hole outer sealing ring mounting groove is provided on the periphery of the outer frame adsorption hole outer sealing ring, and an outer frame adsorption hole outer sealing ring 3 is provided in the mounting groove of the outer frame adsorption hole outer sealing ring. Among them, the small-sized vacuum adsorption area lower cover plate 21 in Example 1 is exemplified as a six-inch vacuum adsorption area lower cover plate in this embodiment, the sealing ring 5 of the small-sized product adsorption area is exemplified as a sealing ring of the six-inch product adsorption area in this embodiment, the sealing ring 4 outside the larger-sized product adsorption area is exemplified as a sealing ring outside the eight-inch product adsorption area in this embodiment, and the installation groove 22 of the sealing ring outside the larger-sized product adsorption area is exemplified as an installation groove of the sealing ring outside the eight-inch product adsorption area in this embodiment.

[0045] The present embodiment also includes a vacuum assembly, which includes a vacuum air pipe in a six-inch product adsorption area, a vacuum air pipe in an eight-inch product adsorption area, a vacuum air pipe in a vacuum air passage of an outer frame adsorption hole, and a vacuum pump, wherein the vacuum air pipe 7 in a small-size product adsorption area is exemplified as a vacuum air pipe in a six-inch product adsorption area in the present embodiment, and the vacuum air pipe 8 in a larger-size product adsorption area is exemplified as a vacuum air pipe in an eight-inch product adsorption area in the present embodiment. The vacuum air pipe in the six-inch product adsorption area, the vacuum air pipe in the eight-inch product adsorption area, and the vacuum air pipe in the vacuum air passage of an outer frame adsorption hole are all provided with solenoid valves, and each solenoid valve is independently controlled.

[0046] The lower cover plate of the six-inch vacuum adsorption area is provided with a groove at the position corresponding to the six-inch product adsorption area in the middle of the surface of the lower cover plate 2. The six-inch vacuum adsorption area lower cover plate and the sealing ring of the six-inch product adsorption area on its periphery, as well as the six-inch product adsorption area, form a six-inch product adsorption area vacuum chamber. The vacuum tube is led down through the vacuum chamber, i.e., the vacuum air pipe of the six-inch product adsorption area, and the vacuum air pipe of the six-inch product adsorption area is connected to the vacuum pumping part. Specifically, when the six-inch sheet product is produced without a frame, the vacuum solenoid valve on the vacuum pumping part is controlled to open the pipe connected to the six-inch vacuum air pipe to evacuate the air pipe of the vacuum air duct of the outer frame adsorption hole and the vacuum air pipe of the eight-inch product adsorption area are closed. At this time, the six-inch sheet is vacuum adsorbed and fixed through the ceramic loose hole plate, i.e., the six-inch product adsorption area, to facilitate printing operations.

[0047] The middle area surrounded by the sealing ring of the six-inch product adsorption area and the sealing ring outside the eight-inch product adsorption area is the lower cover plate of the eight-inch product adsorption area. A groove is also opened at the position of the lower cover plate 2 corresponding to the eight-inch product adsorption area. The lower cover plate 2, the sealing ring of the six-inch product adsorption area, the sealing ring outside the eight-inch product adsorption area and the eight-inch product adsorption area form a vacuum chamber of the eight-inch product adsorption area. The vacuum pipes are combined through the holes opened on both sides of the vacuum chamber, that is, the vacuum air pipes of the eight-inch product adsorption area. The vacuum air pipes of the eight-inch product adsorption area are connected to the vacuum pump. Specifically, when the eight-inch sheet product is produced without a frame, the vacuum solenoid valve is controlled to open the vacuum air pipes connected to the six-inch vacuum air pipe and the eight-inch product adsorption area, and the vacuum pump is connected to the vacuum pump, and the air pipe of the vacuum air duct of the outer frame adsorption hole is closed. At this time, the vacuum pump is connected through the six-inch product adsorption area and the eight-inch product adsorption area at the same time, and the eight-inch sheet is adsorbed by vacuum to play a fixing role.

[0048] The vacuum air duct of the outer frame adsorption hole is an annular air duct, corresponding to the outer frame adsorption hole 14 in the printing platen 1, and the vacuum pipes are combined by opening holes on both sides of the vacuum air duct of the outer frame adsorption hole, that is, the air pipe of the vacuum air duct of the outer frame adsorption hole, and the air pipe of the vacuum air duct of the outer frame adsorption hole is connected to the vacuum pumping part. Specifically, because the outer frame of the six-inch framed product is usually larger than the eight-inch product, when producing the six-inch framed product, in addition to adsorbing the eight-inch vacuum adsorption part, the air pipe of the vacuum air duct of the outer frame adsorption hole is also opened to make the outer frame adsorption hole 14 pass vacuum, thereby adsorbing the outer frame of the six-inch framed product. Similarly, the outer frame of the eight-inch framed product is positioned by adsorbing the air pipe of the vacuum air duct of the outer frame adsorption hole by controlling the air pipe of the vacuum air duct of the outer frame adsorption hole.

[0049] In the application example, by designing a vacuum adsorption with a frame on a small-sized printing adsorption platen, and designing a larger-sized vacuum adsorption and a larger-sized vacuum adsorption with a frame, one device can be used for the production of products of various specifications.

[0050] Similarly, in other application examples, not only can the small size be expanded to a larger size, but also the large size can be modified to add small vacuum adsorption holes to achieve compatibility with relatively small products. That is, the expansion and compatibility of other similar sizes can be achieved by reference.

[0051] To sum up, the printing device for thin film products provided by the utility model can maximize the utilization rate of equipment, reduce the investment cost of equipment, and reduce the space occupied by factory equipment by achieving compatibility with multiple specifications. It is especially applicable in the product development stage and avoids investing too much in special equipment at the beginning.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A printing device for a film product, characterized in that: Used to adsorb a first-size product and a second-size product, where the second-size product is larger than the first-size product; The printing device comprises a printing platen, a lower cover plate and a vacuum assembly, wherein the lower cover plate is located below the printing platen and is fixed relative to the printing platen; The printing platen is provided with a first adsorption area and a second adsorption area, the second adsorption area is centered on the first adsorption area and is arranged around the periphery of the first adsorption area; the first adsorption area is used to adsorb products of a first size, and the first adsorption area and the second adsorption area work together to adsorb products of a second size; The first adsorption area and the lower cover plate form a first vacuum chamber, the second adsorption area and the lower cover plate form a second vacuum chamber, the second vacuum chamber is located outside the first vacuum chamber, and the first vacuum chamber and the second vacuum chamber are respectively connected to the vacuum assembly; The lower cover plate is divided into a first lower cover plate area and a second lower cover plate area, the first lower cover plate area corresponds to the first adsorption area, and the first lower cover plate area is connected to the lower part of the first adsorption area to form a first vacuum chamber; the second lower cover plate area corresponds to the second adsorption area, and the second lower cover plate area is connected to the lower part of the second adsorption area to form a second vacuum chamber; It also includes a first sealing ring and a second sealing ring, wherein the first sealing ring is located at the periphery of the first lower cover plate area, and the first sealing ring, the first lower cover plate area, and the first adsorption area form a first vacuum chamber; The second sealing ring is located at the periphery of the second lower cover plate area, and the second sealing ring, the second lower cover plate area and the second adsorption area form a second vacuum chamber; The material of the printing platen is a ceramic loose hole plate; The printing platen is also provided with an outer frame adsorption area, and the outer frame adsorption area is arranged at the periphery of the second adsorption area; The outer frame adsorption area is provided with an outer frame adsorption hole; The material of the outer frame adsorption area is different from that of the first adsorption area and the second adsorption area. The material of the outer frame adsorption area does not have a vacuum adsorption function, and its adsorption function is achieved through the outer frame adsorption holes thereon.

2. The printing device for thin film products according to claim 1, characterized in that: The lower cover plate is provided with at least two grooves for mounting the first sealing ring and the second sealing ring respectively.

3. The printing device for thin film products according to claim 1, characterized in that: The vacuum assembly includes a first vacuum air pipe, a second vacuum air pipe and a vacuum pumping member. The first vacuum chamber is connected to the vacuum pumping member through the first vacuum air pipe, and the second vacuum chamber is connected to the vacuum pumping member through the second vacuum air pipe.

4. The printing device for thin film products according to claim 1, characterized in that: The lower cover plate can also be divided into a third lower cover plate area, the third lower cover plate area is located outside the second lower cover plate area, and the third lower cover plate area is relatively connected to the lower side of the outer frame adsorption area to form a third vacuum chamber.

5. The printing device for thin film products according to claim 4, characterized in that: The printing device further comprises a third sealing ring, the third sealing ring is located outside the second sealing ring, and the third sealing ring, the third lower cover plate area, and the outer frame adsorption area form a third vacuum chamber; The vacuum assembly further comprises a third vacuum air pipe, and the third vacuum chamber is connected to the vacuum pumping member via the third vacuum air pipe.

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