A diffuser film printing blade and apparatus therefor

Abstract

The application discloses a diffusion film printing doctor blade, which comprises a doctor blade body composed of an ink storage body and an ink scraping body, the ink storage body is detachably provided with an ink storage box, the ink storage box comprises a box body and a plate body, an elastic body is connected between the box body and the plate body, a closed structure with an inner cavity is formed between the box body, the plate body and the elastic body, an ink outlet is arranged on the doctor blade body, the ink outlet is communicated with the plate body and the ink scraping body, a first one-way valve is arranged on the plate body at the ink outlet, a second one-way valve is arranged on the box body, and a driving piece for driving the elastic body to stretch and contract is arranged on the ink scraping body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diffusion film printing machine, in particular to a diffusion film printing squeegee. BACKGROUND

[0002] Diffusion film printing refers to printing a light shielding layer on the frame of diffusion film through silk screen printing, so that when the diffusion film constitutes a backlight module, the light hitting the diffusion film makes the light from a point source or a line source form a uniformly distributed surface light source, and the light shielding layer located in the frame prevents the light from diffusing outside and fixes the light.

[0003] In the existing diffusion film printing equipment, the printing squeegee is used to apply ink to the silk screen and print on the diffusion film for a certain number of times, and then the ink needs to be added to the silk screen manually, which is inconvenient during operation of the equipment. SUMMARY

[0004] The present application aims to provide a diffusion film printing squeegee to solve the above technical problems.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a diffusion film printing squeegee, comprising a squeegee body composed of an ink storage body and an ink scraping body, a storage box is detachably arranged in the ink storage body, the storage box comprises a box body and a plate body, an elastic body is connected between the box body and the plate body, and a closed structure with an inner cavity is formed between the box body, the plate body and the elastic body, an ink outlet is arranged on the squeegee body, the ink outlet is communicated with the plate body and the ink scraping body, a first one-way valve is arranged on the plate body at the ink outlet, a second one-way valve is arranged on the box body, and a driving member is arranged on the ink scraping body to drive the elastic body to stretch and contract.

[0006] Preferably, the driving member comprises a connecting plate and a connecting rod, the ink outlet penetrates the connecting rod, the connecting plate is slidably arranged in the inner cavity of the storage box away from the plate body, one end of the connecting rod is fixed to the connecting plate, the other end of the connecting rod extends out of the storage box and is fixedly connected with the ink scraping body, a spring is sleeved on the part of the connecting rod outside the storage box, and the two ends of the spring are respectively abutted with the outer wall of the storage box and the ink scraping body.

[0007] Preferably, a T-shaped groove is arranged on the connecting plate, a T-shaped rod is arranged on the plate body and slidably connected with the T-shaped groove, the storage box is detachably arranged in the ink storage body through cooperation of the T-shaped rod and the T-shaped groove, a connecting part is tightly connected between the storage box and the ink storage body, the ink outlet penetrates the T-shaped rod, and the opening of the ink outlet at the ink scraping body is offset from the bottom end of the ink scraping body.

[0008] Preferably, the ink storage body is provided with a cavity for sliding the ink storage box, and the cavity is provided with a through hole on the inner wall of both sides of the cavity; the connecting part comprises a clamping block, the ink storage box is provided with a sliding groove for sliding connection of the clamping block, one end of the clamping block in the sliding groove is provided with a limiting plate, one end of the sliding groove is provided with a limiting groove for sliding of the limiting plate, the limiting groove is provided with a second spring for driving the limiting plate to slide outward, and the clamping block is provided with an inclined surface at the end for clamping into the cavity.

[0009] Preferably, the elastic body is a corrugated rubber sleeve.

[0010] Preferably, a plurality of groups of connecting rods are arranged along the length direction of the connecting plate, a plurality of groups of springs are arranged corresponding to the connecting rods, and the ink storage body is provided with a rod hole for sliding of the connecting rod.

[0011] Preferably, one end of the rod hole is provided with an enlarged hole for pressing of the spring.

[0012] Preferably, the opening of the ink outlet of the T-shaped rod is provided with a sealing ring.

[0013] Preferably, a adjusting nut is threadedly connected to one end of the connecting rod close to the ink scraping body, and one end of the spring is abutted against the adjusting screw.

[0014] A diffuser film printing device comprises the diffuser film printing blade.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] When the ink scraping body is pressed onto the screen each time, the ink scraping body will move upward and extrude the space in the ink storage box, so that the ink in the ink storage box flows out of the ink outlet through the first one-way valve, and the ink is added to the screen, so that the ink on the screen can be automatically added after each scraping, and personnel need not continuously observe the ink on the screen and frequently add ink to the screen. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a structural schematic diagram of the whole embodiment;

[0019] Figure 2 is an exploded schematic diagram of the whole structure of the embodiment;

[0020] Figure 3 is a sectional view schematic diagram of the whole embodiment;

[0021] Figure 4 is a sectional view of the highlighted connection part of the present embodiment.

[0022] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0023] 1, squeegee body; 11, ink storage body; 12, ink scraping body; 2, ink storage box; 21, box body; 22, plate body; 23, elastic body; 3, ink outlet; 4, first one-way valve; 5, second one-way valve; 6, connecting rod; 7, connecting plate; 8, spring; 30, T-shaped groove; 31, T-shaped rod; 32, cavity; 33, bayonet; 34, clamping block; 35, second spring; 36, third spring; 37, rod hole; 38, counterbore; 39, sealing ring; 40, adjusting nut; 41, inclined surface. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical solution: a diffusion film printing squeegee, which comprises a squeegee body 1 composed of an ink storage body 11 and an ink scraping body 12. An ink storage box 2 is detachably arranged in the ink storage body 11. The ink storage box 2 comprises a box body 21 and a plate body 22. The box body 21 and the plate body 22 are connected by an elastic body 23. A closed structure with an inner cavity is formed between the box body 21, the plate body 22 and the elastic body 23. The squeegee body 1 is provided with an ink outlet 3. The ink outlet 3 is connected to the plate body 22 and the ink scraping body 12. The plate body 22 is provided with a first one-way valve 4 at the ink outlet 3. The first one-way valve 4 only allows air to flow out of the ink storage box 2. When the pressure in the inner cavity of the ink storage box 2 increases, the ink will flow out of the first one-way valve 4 to the outside of the ink storage box 2. The box body 21 is provided with a second one-way valve 5. The second one-way valve 5 only allows air to enter the inner cavity of the ink storage box 2 from the outside of the ink storage box 2. This facilitates the inner cavity pressure to remain unchanged when the bottom plate of the ink storage box 2 moves downward to the initial position each time. The ink scraping body 12 is provided with a driving member for driving the elastic body 23 to stretch and contract. It should be noted that the ink storage box 2 stores ink in a sealed space. The second one-way valve 5 can be arranged at the top of the side edge of the ink storage box 2.

[0026] Specifically, the driving member comprises a connecting plate 7 and a connecting rod 6, the ink outlet 3 penetrates the connecting rod 6, and the ink outlet of the ink storage box 2 flows into the ink scraping body 12 after the ink is discharged. The connecting plate 7 is arranged in the inner cavity of the ink storage box 2 and connected with the plate body 22 on the side away from the ink scraping body 12. The connecting rod 6 is fixed on the connecting plate 7 and extends to the outside of the ink storage box 2 and is fixedly connected with the ink scraping body 12. The part of the connecting rod 6 outside the ink storage box 2 is sleeved with a spring 8, and the two ends of the spring 8 are respectively abutted with the outer wall of the ink storage box 2 and the ink scraping body 12. After the ink scraping body 12 scrapes the ink on the screen each time and rises, the connecting rod 6 will drive the connecting plate 7 to move to the initial position at the bottom end of the ink storage box 2 under the tension of the spring 8, so as to facilitate the upward movement of the plate body 22 and the preparation of the ink discharge of the ink storage box 2.

[0027] Specifically, the connecting plate 7 is provided with a T-shaped groove 30, the vertical section of the T-shaped groove 30 is in the shape of an inverted T, and the plate body 22 is provided with a T-shaped rod 31 which is in sliding connection with the T-shaped groove 30. After the T-shaped rod 31 is clamped into the T-shaped groove 30, the plate body 22 is connected with the connecting plate 7. The upward and downward movement of the connecting plate 7 will drive the plate body 22 to compress or stretch the elastic body 23. The ink storage box 2 is detachably arranged in the ink storage body 11 through the cooperation of the T-shaped rod 31 and the T-shaped groove 30. The ink storage box 2 and the ink storage body 11 are tightly connected with a connecting part. The ink outlet 3 penetrates the T-shaped rod 31, and the opening of the ink outlet 3 at the ink scraping body 12 deviates from the bottom end of the ink scraping body 12, so that the bottom of the ink scraping body 12 remains flat, and the opening avoids causing a gap in the ink scraping position of the ink scraping body 12.

[0028] Specifically, the ink storage body 11 is provided with a cavity 32 for sliding the ink storage box 2. The inner walls on both sides of the cavity 32 are provided with a clamping hole 33 penetrating the ink storage body 11. The connecting part comprises a clamping block 34. The ink storage box 2 is provided with a sliding groove for sliding connection of the clamping block 34. One end of the clamping block 34 in the sliding groove is provided with a limiting plate. One end of the sliding groove is provided with a limiting groove for sliding of the limiting plate. The limiting groove is provided with a second spring 35 for driving the limiting plate to slide outward. One end of the clamping block 34 for clamping into the cavity 32 is provided with an inclined surface 41. Under the action of the second spring 35, the part of the clamping block 34 provided with the inclined surface 41 is always at the outer end of the ink storage box 2. When the ink storage box 2 slides into the cavity 32 of the ink storage body 11, the inclined surface 41 abuts against the inner wall of the cavity 32 and drives the clamping block 34 to slide into the sliding groove until the clamping block 34 is opposite to the clamping hole 33 and then pops out. At this time, the one end of the ink storage box 2 in the cavity 32 is just fitted with the inner end of the cavity 32, so as to complete the fixation of the ink storage box 2. It should be noted that the one end of the ink storage body 11 in the cavity 32 can be provided with a recess, and the third spring 36 is arranged in the recess. When the ink storage box 2 needs to be taken out, the clamping block 34 only needs to be pressed inward, and the ink storage box 2 can be popped out under the action of the third spring 36.

[0029] Specifically, the elastic body 23 is a corrugated rubber sleeve.

[0030] Specifically, the connecting rods 6 are provided with multiple groups along the length direction of the connecting plate 7, and the springs 8 are provided with multiple groups corresponding to the connecting rods 6, and the ink storage body 11 is provided with rod holes 37 for the connecting rods 6 to slide.

[0031] Specifically, one end of the rod hole 37 is provided with an expanded hole 38 for the spring 8 to be pressed into, but after the ink scraping body 12 moves up, it directly contacts with the outer wall of the ink storage body 11, so that the spring 8 can be hidden in the expanded hole 38, avoiding the spring 8 being extruded by the ink scraping body 12 and the ink storage body 11.

[0032] Specifically, the ink outlet 3 of the T-shaped rod 31 is provided with a sealing ring 39 at the opening, so that after the T-shaped rod 31 is completely clamped into the T-shaped groove 30, the ink outlet 3 of the T-shaped rod 31 and the ink outlet 3 of the connecting plate 7 can be more closely connected, achieving better sealing effect.

[0033] Specifically, the connecting rod 6 is threadedly connected with an adjusting nut 40 at one end close to the ink scraping body 12, and one end of the spring 8 abuts against the adjusting screw, so that by rotating the adjusting nut 40, the compression amount of the spring 8 can be adjusted, thereby controlling the size of the extrusion force of the ink scraping body 12 on the silk screen each time, so that the ink scraping body 12 has better ink scraping effect.

[0034] One specific application example of the embodiment is as follows:

[0035] When the device is used, the ink storage box 2 containing ink is slid into the cavity 32 of the ink storage body 11 until the clamping block 34 of the ink storage box 2 is clamped into the clamping opening 33 to complete the fixation of the ink storage box 2 and the ink storage body 11, and at the same time, the T-shaped rod 31 of the ink storage box 2 is completely clamped into the T-shaped groove 30 of the connecting plate 7, so that the plate body 22 and the connecting plate 7 are connected.

[0036] When the telescopic air cylinder drives the ink storage body 11 to move down to the silk screen (the telescopic air cylinder driving the ink storage body 11 to move down is prior art), the ink scraping body 12 is extruded to move upward, the upward movement of the ink scraping body 12 drives the connecting rod 6 to move upward, thereby driving the connecting plate 7 to move upward, the upward movement of the connecting plate 7 drives the plate body 22 to move upward, the upward movement of the plate body 22 drives the elastic body 23 to contract, so that the space in the ink storage box 2 is compressed, thereby opening the first one-way valve 4, and the ink in the ink storage box 2 flows from the first one-way valve 4 to the ink outlet 3, and the ink successively passes through the ink outlet 3 at the plate body 22, the T-shaped rod 31, the connecting plate 7, the connecting rod 6 and the scraping plate, and flows to the silk screen along the ink scraping body 12, so that the ink scraping body 12 can add certain ink after scraping the ink on the silk screen each time.

[0037] After the ink scraping body 12 completes one ink scraping and moves up, the connecting plate 7 will be driven to move down under the action of the spring 8, thus driving the plate body 22 to move down and stretching the elastic body 23, at this time the second one-way valve 5 opens to make the ink storage box 2 inhale a certain amount of air, so that the pressure in the ink storage box 2 is better maintained at the initial state (the state when the ink storage box 2 just passes through the T-shaped rod 31 and is connected with the connecting plate 7), so that the ink output amount when the space in the ink storage box 2 is compressed each time is kept uniform and stable.

[0038] When it is needed to increase the extrusion force of the ink scraping body 12 against the screen during ink scraping, the size of the force required when the ink scraping body 12 moves up can be increased by adjusting the compression amount of the spring 8 by rotating the adjusting nut 40.

[0039] When it is needed to replace the ink storage box 2, the clamping block 34 clamped at the clamping hole 33 is only pressed inward to make the clamping block 34 disengage from the clamping hole 33, and the ink storage box 2 will be driven by the third spring 36 to make the spring 8 store ink in the ink storage body 11, so that the ink storage box 2 can be replaced.

[0040] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship of the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "threading" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application by the person skilled in the art according to the specific situation.

[0042] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that modifications can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A diffuser film printing blade characterized by: The application relates to a squeegee body (1) which is composed of an ink storage body (11) and an ink scraping body (12), a storage ink box (2) being detachably arranged in the ink storage body (11), the storage ink box (2) comprising a box body (21) and a plate body (22), an elastic body (23) being arranged between the box body (21) and the plate body (22), a closed structure with an inner cavity being formed between the box body (21), the plate body (22) and the elastic body (23), an ink outlet (3) being arranged on the squeegee body (1), the ink outlet (3) being communicated with the plate body (22) and the ink scraping body (12), a first one-way valve (4) being arranged on the plate body (22) at the ink outlet (3), a second one-way valve (5) being arranged on the box body (21), and a driving element being arranged on the ink scraping body (12) and used for driving the elastic body (23) to stretch and contract.

2. A diffuser film printing blade according to claim 1, wherein: The driving element comprises a connecting plate (7) and a connecting rod (6), the ink outlet (3) penetrates through the connecting rod (6), the connecting plate (7) is arranged in the inner cavity of the storage ink box (2) and connected with the plate body (22) on the side far away from the ink scraping body (12), the connecting rod (6) is fixed on the connecting plate (7), one end of the connecting rod (6) far away from the plate body (22) extends out of the storage ink box (2) and is fixedly connected with the ink scraping body (12), the part of the connecting rod (6) outside the storage ink box (2) is sleeved with a spring (8), and the two ends of the spring (8) are respectively abutted against the outer wall of the storage ink box (2) and the ink scraping body (12).

3. A diffuser film printing blade according to claim 2, wherein: A T-shaped slot (30) is arranged on the connecting plate (7), a T-shaped rod (31) is arranged on the plate body (22) and slidably connected with the T-shaped slot (30), the storage ink box (2) is detachably arranged in the ink storage body (11) through cooperation of the T-shaped rod (31) and the T-shaped slot (30), a connecting part is tightly connected between the storage ink box (2) and the ink storage body (11), the ink outlet (3) penetrates through the T-shaped rod (31), and the opening of the ink outlet (3) at the ink scraping body (12) is deviated from the bottom end of the ink scraping body (12).

4. A diffuser film printing blade according to claim 1, wherein: A cavity (32) for sliding the storage ink box (2) is arranged in the ink storage body (11), a clamping opening (33) penetrating through the ink storage body (11) is arranged on the inner wall of the two sides of the cavity (32), the connecting part comprises a clamping block (34), a sliding groove for slidably connecting the clamping block (34) is arranged in the storage ink box (2), a limiting plate is arranged on one end of the clamping block (34) in the sliding groove, a limiting groove for sliding the limiting plate is arranged on one end of the sliding groove, a second spring (35) for driving the limiting plate to slide outward is arranged in the limiting groove, and an inclined surface (41) is arranged on the end of the clamping block (34) for clamping into the cavity (32).

5. A diffuser film printing blade according to claim 1, wherein: The elastic body (23) is a corrugated rubber sleeve.

6. A diffuser film printing blade according to claim 5, wherein: A plurality of groups of the connecting rod (6) are arranged along the length direction of the connecting plate (7), a plurality of groups of the spring (8) are arranged corresponding to the connecting rod (6), and a rod hole (37) for sliding the connecting rod (6) is arranged on the ink storage body (11).

7. A diffuser film printing blade according to claim 2, wherein: An expanded hole (38) for pressing the spring (8) is arranged on one end of the rod hole (37). A sealing ring (39) is arranged on the opening of the ink outlet (3) of the T-shaped rod (31).

8. A diffuser film printing blade according to claim 2, wherein: The connecting rod (6) is threadedly connected with an adjusting nut (40) at one end close to the ink scraping body (12), and one end of the spring (8) is in abutment with the adjusting screw.

9. A diffuser film printing apparatus, characterized by: The printed web includes the diffuser film printing blade of any one of claims 1-8.

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