Scraper mechanism and printing equipment

Abstract

The utility model discloses a scraper mechanism and printing equipment with the scraper mechanism. The slurry scraper is installed on the knife rest and moves together with the knife rest, the slurry scraper comprises a first slurry scraper body and a second slurry scraper body which are oppositely arranged, and a flow seam allowing slurry to flow out is formed between the first slurry scraper body and the second slurry scraper body; the first dilution scraper is installed on the knife rest and moves together with the knife rest, the first dilution scraper is located on the side, away from the second slurry scraper, of the first slurry scraper, the first dilution scraper is located on the front side of the slurry scraper in the moving direction, and a diluent used for diluting slurry can be stored in the first dilution scraper. The scraper mechanism provided by the embodiment of the utility model at least has the advantages of improving the product quality and the like.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a doctor blade mechanism and printing equipment. Background Technology

[0002] In related technologies, the scraper mechanism is used to smooth the slurry on the carrier film. During the operation of the scraper mechanism, only a small amount of slurry at the blade tip continuously rubs against the carrier film, causing the slurry at the blade tip to dry rapidly. The drying of the slurry on the scraper blade leads to a decrease in its fluidity, resulting in poor slurry smoothing effect, and even interruption of slurry application on the coating surface, reducing production capacity and yield, and ultimately reducing product quality. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a scraper mechanism that has advantages such as high stability, increased production capacity, and improved product quality.

[0004] This utility model also proposes a printing device with a doctor blade mechanism.

[0005] To achieve the above objectives, a scraper mechanism according to an embodiment of the present invention includes: a scraper holder; a slurry scraper, the slurry scraper being mounted on the scraper holder and moving together with the scraper holder, the slurry scraper including a first slurry scraper and a second slurry scraper disposed opposite to each other, a flow slot for slurry to flow out being formed between the first slurry scraper and the second slurry scraper; and a first dilution scraper, the first dilution scraper being mounted on the scraper holder and moving together with the scraper holder, the first dilution scraper being located on the side of the first slurry scraper away from the second slurry scraper, the first dilution scraper being located in front of the slurry scraper in the direction of movement, and the first dilution scraper being able to store a diluent for diluting the slurry.

[0006] According to the scraper mechanism of this utility model embodiment, due to the presence of the first diluting scraper, a layer of diluent can be evenly applied to the coating surface. When the slurry and diluent are scraped evenly, this layer of diluent helps to reduce the viscosity of the slurry, making the slurry easier to flow, thereby reducing problems such as uneven coating thickness or surface defects caused by poor slurry flowability.

[0007] Therefore, the scraper mechanism according to the embodiments of this utility model has at least the advantages of improved product quality.

[0008] According to some specific embodiments of the present invention, the first dilution scraper includes a flexible adsorption blade for adsorbing the diluent.

[0009] Furthermore, the lower edges of the first slurry scraper and the second slurry scraper are at the same horizontal position, and the lower edges of both the first slurry scraper and the second slurry scraper are higher than the lower edge of the first dilution scraper.

[0010] Furthermore, the vertical distance between the lower edge of the first dilution scraper and the lower edges of the first slurry scraper and the second slurry scraper is less than or equal to 10 mm.

[0011] According to some specific embodiments of the present invention, the angle between the axis of the first dilution scraper and the horizontal plane is 45°~135°.

[0012] According to some specific embodiments of the present invention, a first mounting groove is constructed at the corresponding position of the first dilution scraper at the bottom of the blade holder, and the first dilution scraper is installed in the first mounting groove and extends downward out of the first mounting groove.

[0013] Furthermore, the first dilution scraper includes: a first storage tank and a first dilution blade head, the first storage tank is installed in the first mounting groove and can contain the diluent, the first dilution blade head is connected to the first storage tank and extends downward into the first mounting groove, and the first storage tank is in communication with the first dilution blade head.

[0014] It should be noted that the material of the first dilution blade is preferably a conventional flexible material in the art, such as polymer materials like plastics, resins, and fibers. When exposed to air, the diluent on the first dilution blade does not easily dry or run off. When in contact with the coating surface, the first dilution blade has good writing properties, allowing the diluent to be evenly applied to the coating surface, thereby improving product quality.

[0015] According to some specific embodiments of the present invention, it further includes: a second dilution scraper, the second dilution scraper being mounted on the scraper holder and moving together with the scraper holder, the second dilution scraper being located on the side of the second slurry scraper away from the first slurry scraper.

[0016] Furthermore, both the first slurry scraper and the second slurry scraper are constructed as flat plates, and the cross-sections of both the first slurry scraper and the second slurry scraper are inclined relative to the vertical direction. The distance between the first slurry scraper and the second slurry scraper gradually decreases towards the bottom of the blade holder.

[0017] According to a second aspect of the present invention, a printing apparatus is provided, comprising: a scraper mechanism as described in the above embodiments of the present invention.

[0018] The printing equipment according to the present invention, through the scraper mechanism of the present invention, has at least the advantage of improved product quality.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a cross-sectional structural diagram of the scraper mechanism according to an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A partial schematic diagram;

[0023] Figure 3 This is a top view of the scraper mechanism in operation according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the scraper mechanism according to an embodiment of the present utility model.

[0025] Reference numerals:

[0026] Scraper mechanism 1, blade holder 100, slurry scraper 200, first slurry scraper 210, second slurry scraper 220

[0027] Flow joint 201, first dilution scraper 300, second dilution scraper 400, first mounting groove 110, second mounting groove 120

[0028] First storage tank 310, first dilution cutter head 320, second storage tank 410, second dilution cutter head 420

[0029] First chamfer 301, second chamfer 302, coating surface 10, laser transfer tank 11. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0033] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0034] The following is a reference appendix. Figures 1-4 The scraper mechanism 1 according to an embodiment of the present utility model is described. The scraper mechanism 1 includes a blade holder 100, a slurry scraper 200 and a first dilution scraper 210.

[0035] The slurry scraper 200 is mounted on the blade holder 100 and moves together with the blade holder 100. The slurry scraper 200 includes a first slurry scraper 210 and a second slurry scraper 220 arranged opposite to each other. A flow slot 201 for slurry to flow out is formed between the first slurry scraper 210 and the second slurry scraper 220.

[0036] The first dilution doctor blade 300 is mounted on the blade holder 100 and moves together with the blade holder 100. The first dilution doctor blade 300 is located on the side of the first slurry doctor blade 210 away from the second slurry doctor blade 220. The first dilution doctor blade 300 is located in front of the slurry doctor blade 200 in the direction of movement. The first dilution doctor blade 300 can store a diluent for diluting the slurry. Figure 3 The arrow indicates the direction of movement of the scraper mechanism 1.

[0037] For example, during the operation of the scraper mechanism 1, a layer of diluent can be applied to the surface of the coating surface 10 by the first diluent scraper 300, thereby replenishing the diluent loss in the slurry caused by frictional heat generation during the subsequent contact of the first slurry scraper 210 and the second slurry scraper 220 with the coating surface 10.

[0038] When the scraper mechanism 1 is applied to a laser transfer printing device, when the scraper mechanism 1 applies the paste, the paste is filled into the laser transfer tank 11 through the first paste scraper 210 and the second paste scraper 220, and then the paste is printed to form grid lines by laser transfer.

[0039] In the prior art, without the addition of a first dilution doctor blade 300, the yield rate of the doctor blade mechanism 1 drops significantly after printing 4000 sheets, with unfilled grooves appearing on five consecutive carrier films. This leads to an 8% transfer failure rate (i.e., the grid line paste is interrupted on the coating surface) during laser transfer. However, in this embodiment, with the addition of the first dilution doctor blade 300, the failure rate drops from 8% to 1%, the frequency of cleaning the slurry at the blade edge decreases, and the cleaning frequency increases from once every 0.5 hours to once every 3 hours. The dry slurry loss during cleaning decreases from 6g every 3 hours to 1g every 3 hours, and the production capacity increases from 6000 to 7000. According to the doctor blade mechanism 1 of this embodiment, due to the presence of the first dilution doctor blade 300, a layer of thinner can be evenly applied to the coating surface 10. When the slurry and thinner are leveled, this thinner layer helps to reduce the viscosity of the slurry, making the slurry flow more easily, thereby reducing problems such as uneven coating thickness or surface defects caused by poor slurry flowability. Furthermore, the use of diluent can improve the wettability between the slurry and the coating surface 10, further enhancing the stability and reliability of the process. The adsorption and spreading function of the first dilution doctor blade 300 allows the diluent to act on the coating surface 10 more quickly, shortening the production cycle and improving production efficiency. Frequent diluent replacements or dilution operations are unnecessary, reducing equipment downtime and maintenance costs.

[0040] When exposed to air, the diluent on the first dilution blade 300 does not easily dry out or run off. When in contact with the coating surface 10, the first dilution blade 300 has good writing properties and can evenly coat the diluent onto the coating surface 10, thereby improving product quality.

[0041] Therefore, the scraper mechanism 1 according to the present utility model has advantages such as high stability, increased production capacity and improved product quality.

[0042] Of course, it is understood that although the above embodiments illustrate the technical effects of the present invention by applying the scraper mechanism 1 to a laser transfer printing device, the scraper mechanism 1 of the present invention can also be applied to other similar printing devices, such as coating printing devices.

[0043] In some specific embodiments of this utility model, the first dilution scraper 300 includes a flexible adsorption head for adsorbing the diluent. The material of the flexible adsorption head includes, but is not limited to, polymer materials such as plastics, resins, and fibers. When the first dilution scraper 300 includes a flexible adsorption head, the first dilution scraper 300 can be in close contact with the surface of the coated surface 10, ensuring more effective coating of the diluent while avoiding scratches to the coated surface 10 when the first dilution scraper 300 uses a hard head. The first dilution scraper 300 exerts pressure on the coated surface 10, and the position of the softer lower edge of the first dilution scraper 300 changes accordingly, optimizing the coating effect of the diluent while also shortening the distance between the slurry scraper 200 and the coated surface 10, ensuring that both the first dilution scraper 300 and the slurry scraper 200 can provide a uniform coating and smoothing effect when coating the coated surface 10.

[0044] Furthermore, if Figure 1 As shown, the lower edges of the first slurry scraper 210 and the second slurry scraper 220 are at the same horizontal position. The lower edges of both the first slurry scraper 210 and the second slurry scraper 220 are higher than the lower edge of the first dilution scraper 300.

[0045] Setting the lower edges of the first slurry scraper 210 and the second slurry scraper 220 at the same horizontal position ensures that during the coating process, both scrapers act simultaneously on the coating surface 10, thereby achieving uniform application of the slurry and avoiding inconsistent coating thickness. Their identical horizontal position also allows the scrapers to apply pressure evenly to the coating surface 10, ensuring the slurry flows correctly and spreads evenly under their action, contributing to a better coating effect.

[0046] Furthermore, if Figure 1 As shown, the vertical distance between the lower edge of the first dilution scraper 300 and the lower edges of the first slurry scraper 210 and the second slurry scraper 220 is less than or equal to 10 mm. Figure 1 In the figure, H represents the vertical distance between the lower edge of the first dilution scraper 300 and the lower edges of the first slurry scraper 210 and the second slurry scraper 220.

[0047] The lower edge of the first dilution doctor blade 300 is kept within 10mm of the lower edges of the first slurry doctor blade 210 and the second slurry doctor blade 220, which can precisely control the thickness of the coating. Specifically, H can be 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 7mm, 9mm, 10mm, etc.

[0048] In some embodiments, the lower edge of the first dilution doctor blade 300 is kept within 0mm to 5mm of the lower edges of the first paste doctor blade 210 and the second paste doctor blade 220. This appropriate distance ensures a uniform coating and moderate thickness, improving the laser transfer effect. Furthermore, maintaining the distance between the first paste doctor blade 210 and the second paste doctor blade 220 within 2mm to 3mm helps ensure the integrity of the coated surface 10.

[0049] In some specific embodiments of this utility model, such as Figure 2 As shown, Figure 2 R represents the angle between the first dilution scraper 300 and the horizontal plane. The angle between the axis of the first dilution scraper 300 and the horizontal plane is 45°~135°.

[0050] For example, the angle between the axis of the first dilution doctor blade 300 and the horizontal plane can be 45° or 90° to accommodate different shapes of the first dilution doctor blade 300 and avoid local accumulation or uneven thickness. This allows the first dilution doctor blade 300 to better control the flow and distribution of the slurry during operation, ensuring that the slurry is evenly covered on the coating surface 10. This helps to form good contact and a good scraping effect between the first dilution doctor blade 300 and the horizontal coating surface 10, thereby improving the smoothness and evenness of the coating and improving the final coating quality.

[0051] In addition, an appropriate angle can reduce the wear of the first dilution scraper 300 during operation, extend the service life of the first dilution scraper 300, and reduce equipment maintenance costs.

[0052] In some specific embodiments of this utility model, such as Figure 1 As shown, a first mounting groove 110 is constructed at the corresponding position of the first dilution scraper 300 at the bottom of the blade holder 100. The first dilution scraper 300 is installed in the first mounting groove 110 and extends downward into the first mounting groove 110.

[0053] The first mounting slot 110 provides a fixed mounting position, allowing the first dilution blade 300 to be accurately and securely mounted on the blade holder 100, reducing the risk of detachment or displacement due to vibration or operation. The structure of the first mounting slot 110 allows for convenient control and adjustment of the mounting depth and angle of the first dilution blade 300, thereby achieving optimal working conditions and better coating results according to actual needs.

[0054] Furthermore, such as Figure 1As shown, the first dilution scraper 300 includes a first storage tank 310 and a first dilution blade 320. The first storage tank 310 is installed in the first mounting groove 110 and contains diluent. The first dilution blade 320 is connected to the first storage tank 310 and extends downward out of the first mounting groove 110. The first storage tank 310 and the first dilution blade 300 communicate with each other.

[0055] The structure of the first storage tank 310 effectively stores the diluent, ensuring a sufficient supply of diluent during operation and maintaining a continuous supply of diluent required for the coating process. At the same time, the independent structure of the first storage tank 310 simplifies the management and replacement of the diluent, allowing operators to easily monitor its usage and replenish or replace it as needed, ensuring smooth production.

[0056] By containing the diluent in the first storage tank 31, the flow between the diluent and the first diluting head 320 can be kept stable, avoiding poor flow of the diluent due to changes in the external environment, thereby ensuring the uniformity and quality of the coating process.

[0057] In some specific embodiments of this utility model, the scraper mechanism 1 further includes a second dilution scraper 400, which is mounted on the scraper holder 100 and moves together with the scraper holder 100. The second dilution scraper 400 is located on the side of the second slurry scraper 220 away from the first slurry scraper 210.

[0058] By setting a second dilution scraper 400, the process along the scraper mechanism 1 can be completed. Figure 3 After the movement in the direction of the arrow, it ensures that when the scraper mechanism 1 moves in the reverse direction, there will be no problems such as uneven coating thickness or surface defects due to poor slurry fluidity. Furthermore, the second dilution scraper 400 includes a second storage tank 410 and a second dilution head 420. The second storage tank 410 is installed in the second mounting groove 120 and contains diluent. The second dilution head 420 is connected to the second storage tank 410 and extends downwards out of the second mounting groove 120, allowing communication between the second storage tank 410 and the second dilution head 420.

[0059] In some specific embodiments of this utility model, such as Figure 1 and Figure 2 As shown, both the first slurry scraper 210 and the second slurry scraper 220 are constructed as flat plates. The cross-sections of both the first slurry scraper 210 and the second slurry scraper 220 are inclined relative to the vertical direction, and the distance between the first slurry scraper 210 and the second slurry scraper 220 gradually decreases downwards towards the blade holder 100. The cross-sections of the first slurry scraper 210 and the second slurry scraper 220 are vertical sections. Figure 2The cross-section of the first slurry scraper 210 is represented by a dashed line passing through it, where r is the angle between the cross-section and the vertical direction.

[0060] The cross-sections of the first slurry scraper 210 and the second slurry scraper 220 are inclined relative to the vertical direction, which promotes the downward flow of slurry along the first slurry scraper 210 and the second slurry scraper 220, making the flow smoother during the coating process and reducing the slurry retention between the first slurry scraper 210 and the second slurry scraper 220 and the coating surface 10. This allows the slurry to advance more smoothly and form a more uniform coating. The distance between the first slurry scraper 210 and the second slurry scraper 220 gradually decreases downward, which can accommodate more slurry between the first slurry scraper 210 and the second slurry scraper 220, improving coating efficiency. Furthermore, the slurry flows downward at an angle through the first slurry scraper 210 and the second slurry scraper 220, which guides the flow of slurry and achieves higher coating precision.

[0061] Furthermore, if Figure 1 As shown, the first slurry scraper 210 and the second slurry scraper 220 are symmetrically arranged on both sides of the flow slot 201, and the first dilution scraper 300 and the second dilution scraper 400 are symmetrically arranged on both sides of the flow slot 201. The bottom of the blade holder 100 has a first chamfer 301 on the side of the first dilution scraper 300 facing away from the first slurry scraper 210, and the bottom of the blade holder 100 has a second chamfer 302 on the side of the second dilution scraper 400 facing away from the second slurry scraper 220.

[0062] The first chamfer 301 and the second chamfer 302 can reduce interference between the bottom of the tool holder 100 and the surface of the coating surface 10, reduce resistance that may be generated during the coating process, make the slurry flow more smoothly, and avoid unnecessary wear or damage. The first chamfer 301 and the second chamfer 302 can also promote the flow of slurry and diluent in the flow gap, optimize the flow path of the liquid, ensure uniform and sufficient mixing, and thus improve the coating efficiency.

[0063] The following describes a printing apparatus according to an embodiment of the present invention.

[0064] According to the embodiments of the present invention, the printing equipment can be a laser transfer device, including the scraper mechanism 1 according to the above embodiments of the present invention.

[0065] The printing equipment according to the above embodiments of the present invention has advantages such as high stability, increased production capacity and improved product quality by utilizing the scraper mechanism 1 according to the embodiments of the present invention.

[0066] Other configurations and operations of the scraper mechanism 1 and printing equipment according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0068] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A scraper mechanism, characterized in that, include: Knife holder; A slurry scraper is mounted on the scraper holder and moves together with the scraper holder. The slurry scraper includes a first slurry scraper and a second slurry scraper arranged opposite each other, and a flow slot for slurry to flow out is formed between the first slurry scraper and the second slurry scraper. A first dilution scraper is mounted on the scraper holder and moves together with the scraper holder. The first dilution scraper is located on the side of the first slurry scraper away from the second slurry scraper. The first dilution scraper is located in front of the slurry scraper in the direction of movement. The first dilution scraper can store a diluent for diluting the slurry.

2. The scraper mechanism according to claim 1, characterized in that, The first dilution scraper includes a flexible adsorption blade for adsorbing the diluent.

3. The scraper mechanism according to claim 2, characterized in that, The lower edges of the first slurry scraper and the second slurry scraper are at the same horizontal position, and the lower edges of both the first slurry scraper and the second slurry scraper are higher than the lower edge of the first dilution scraper.

4. The scraper mechanism according to claim 3, characterized in that, The vertical distance between the lower edge of the first dilution scraper and the lower edges of the first slurry scraper and the second slurry scraper is less than or equal to 10 mm.

5. The scraper mechanism according to claim 1, characterized in that, The angle between the axis of the first dilution scraper and the horizontal plane is 45°~135°.

6. The scraper mechanism according to claim 1, characterized in that, A first mounting groove is constructed at the corresponding position of the first dilution scraper at the bottom of the blade holder. The first dilution scraper is installed in the first mounting groove and extends downward out of the first mounting groove.

7. The scraper mechanism according to claim 6, characterized in that, The first dilution scraper includes: a first storage tank and a first dilution blade head. The first storage tank is installed in the first mounting groove and can contain the diluent. The first dilution blade head is connected to the first storage tank and extends downward into the first mounting groove. The first storage tank and the first dilution blade head are in communication.

8. The scraper mechanism according to claim 1, characterized in that, Also includes: The second dilution scraper is mounted on the scraper holder and moves together with the scraper holder. The second dilution scraper is located on the side of the second slurry scraper away from the first slurry scraper.

9. The scraper mechanism according to claim 1, characterized in that, Both the first and second slurry scrapers are constructed as flat plates, and the cross-sections of both the first and second slurry scrapers are inclined relative to the vertical direction. The distance between the first and second slurry scrapers gradually decreases towards the bottom of the scraper holder.

10. A printing apparatus, characterized in that, include: The scraper mechanism according to any one of claims 1-9.

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