Screen printing scraper and screen printing device

Abstract

The utility model discloses a silk-screen printing scraper and a silk-screen printing device, the silk-screen printing scraper comprises a rubber body and a rigid plate, the rigid plate is connected with the rubber body, at least part of the joint of the rigid plate and the rubber body is embedded into the rubber body, the depth H of the embedded part of the rigid plate embedded into the rubber body is larger than or equal to 5.5 mm and smaller than or equal to 9.5 mm, the thickness D of the embedded part is larger than or equal to 1.5 mm and smaller than or equal to 4.5 mm.

Description

Technical Field

[0001] The utility model relates to the field of electronic technology, in particular to a screen printing squeegee and a screen printing device. Background Art

[0002] As an important printing technology, screen printing is widely used in various industries. During the screen printing process, the flatness of the colloid, the angle and pressure of the squeegee are crucial for the printing thickness. However, the installation of traditional colloids depends on the proficiency of employees. If the force on the colloid installed in the squeegee handle is uneven, or the depth of embedding in the groove is uneven, the flatness of the scraping surface will be poor. Moreover, during the actual continuous long-time printing process, the colloid will age and deform, affecting the pressure and angle, resulting in changes in the printing thickness and affecting the product quality.

[0003] At present, there are some disadvantages in the measures to improve this thickness instability. For example, a common solution is to monitor the thickness in real time during printing and adjust the printing parameters. However, this method depends on the experience of employees and has a low tolerance for errors. Another solution is to use a squeegee with high hardness and short stroke and lock it with a torque wrench. However, this solution has poor thickness uniformity and printing profile performance when printing on an uneven product surface.

[0004] The above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is prior art. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a screen printing squeegee and a screen printing device, aiming to solve the problems such as unstable squeegee existing in the prior art.

[0006] To achieve the above purpose, the utility model provides a screen printing squeegee, which includes:

[0007] A colloid, the height of the colloid is h;

[0008] A rigid plate, connected to the colloid, the hardness of the rigid plate is greater than that of the colloid, and at least part of the connection part of the rigid plate and the colloid is embedded in the colloid. The depth of the embedded part of the rigid plate in the colloid is H, h*1 / 4≤H≤h*2 / 3, the thickness of the embedded part is D, and the thickness of the rigid plate is E, E*1 / 4≤D≤E*1 / 2.

[0009] Preferably, in the screen printing squeegee, the middle area at the bottom of the rigid plate extends towards the colloid to form the embedded part.

[0010] Preferably, in the screen printing squeegee, a receiving groove is formed at a position corresponding to the embedded portion of the colloid, the notch of the receiving groove faces the rigid plate, and the embedded portion is embedded in the receiving groove.

[0011] Preferably, in the screen printing squeegee, the depth of the receiving groove is H1, and 5.5 mm ≤ H1 ≤ 9.5 mm.

[0012] Preferably, in the screen printing squeegee, the hardness of the colloid is A, and 70° ≤ A ≤ 90°.

[0013] Preferably, in the screen printing squeegee, the colloid has a root portion away from the rigid plate, and the flatness of the root portion is B, and -30 μm ≤ B ≤ 30 μm.

[0014] Preferably, in the screen printing squeegee, a plurality of through holes are formed in the rigid plate, and the through holes are spaced from the root portion of the colloid.

[0015] Preferably, in the screen printing squeegee, the plurality of through holes are arranged near the top of the rigid plate away from the root portion and are spaced from the top, and the spacing is C, and 5 mm ≤ C ≤ 6 mm.

[0016] Preferably, in the screen printing squeegee, the plurality of through holes are uniformly arranged along the length direction of the rigid plate.

[0017] To achieve the above object, the present invention further provides a screen printing device, which includes the above screen printing squeegee.

[0018] The present invention has at least the following beneficial effects:

[0019] For the screen printing squeegee provided by the present invention, the height of the colloid is h; the rigid plate is connected to the colloid, and at least a part of the connection portion between the rigid plate and the colloid is embedded in the colloid, the depth of the embedded portion of the rigid plate embedded in the colloid is H, and h*1 / 4 ≤ H ≤ h*2 / 3, the thickness of the embedded portion is D, and the thickness of the rigid plate is E, and E*1 / 4 ≤ D ≤ E*1 / 2. In this way, the thickness requirement of printing can be met, and at the same time, the screen printing squeegee has toughness when stressed and can be applied to uneven printing objects.

[0020] Furthermore, due to the control of the printing thickness uniformity and stability, more prints can be made within the ink life; the squeegee operator can install it conveniently, improving the operation simplicity and being easy to operate; the device has a wide application range and can be applied to various types of screen printing machines, having a broad application prospect.

[0021] Furthermore, in the printing operation adopting the technical solution of the present utility model, the quality of the printed matter has been significantly improved. At the same time, through the observation and statistics of the production process, the printing machine using the device of the present utility model also has obvious advantages in terms of production efficiency and labor cost.

[0022] Furthermore, by partially embedding the rigid plate into the colloid to form a sandwich squeegee, the present utility model can not only meet the printing thickness requirement, but also ensure the toughness of the squeegee during screen printing, and is applicable to uneven printing objects, which can solve the problems such as unstable squeegee existing in the prior art and improve the printing uniformity of the screen printing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of an embodiment of the screen printing squeegee provided by the present utility model;

[0024] Figure 2 is Figure 1 exploded schematic diagram of;

[0025] Figure 3 is Figure 1 partial schematic diagram of the rigid plate in;

[0026] Figure 4 is Figure 1 partial schematic diagram of the colloid in.

[0027] Serial number Name Serial number Name 100 Silk screen printing squeegee 2 Rigid plate 1 Colloid 21 Embedded part 11 Receiving groove 22 Through hole 12 Root

[0028] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0030] In the embodiments of the present utility model, the term "and / or" describes the associated relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0032] The term "plurality" in the embodiments of the present invention refers to two or more than two, and other quantifiers are similar thereto.

[0033] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0034] In the screen printing process, the scraper is crucial to the printing effect. If the scraper has a slight change during the printing process, it will lead to poor printing effect and affect product quality. However, due to the various disadvantages of existing traditional scrapers, it is difficult to ensure the consistency and stability of the scraper pressure and angle during the printing process.

[0035] To this end, the utility model provides a screen printing scraper 100, please refer to Figures 1 to 4 The screen printing scraper 100 includes a colloid 1 and a rigid plate 2 .

[0036] The rigid board 2 has a hardness greater than that of the colloid 1. The rigid board 2 may be, but is not limited to, a rigid board, a fiberglass board, a wooden board, or a steel board.

[0037] The height of the colloid 1 is h. The rigid plate 2 is connected to the colloid 1, and the connection between the rigid plate 2 and the colloid 1 is at least partially embedded in the colloid 1, the depth of the embedded part 21 of the rigid plate 2 embedded in the colloid 1 is H, h*1 / 4≤H≤h*2 / 3, the thickness of the embedded part 21 is D, and the thickness of the rigid plate 2 is E, E*1 / 4≤D≤E*1 / 2. In this way, the thickness requirement of printing can be met, and the screen printing scraper 100 can be tough when subjected to force, and can be suitable for uneven printed materials.

[0038] More specifically, the middle area of the bottom of the rigid plate 2 extends toward the colloid 1 to form the embedded portion 21 .

[0039] In addition, the colloid 1 is provided with a receiving groove 11 at a position corresponding to the embedding part 21, the notch of the receiving groove 11 is arranged toward the rigid plate 2, and the embedding part 21 is embedded in the receiving groove 11. The groove depth of the receiving groove 11 is H1, 5.5mm≤H1≤9.5mm. The embedding part 21 is embedded in the receiving groove 11 during installation.

[0040] During printing, the root 12 of the colloid 1 is usually used for scraping. The installation stability of the squeegee plays a crucial role. However, the installation of the squeegee is easily affected by the proficiency of the employees, resulting in poor flatness of the squeegee and affecting the printing effect. Therefore, in order to improve the stability of the squeegee colloid 1, a rigid plate 2 is embedded in the colloid 1, so that it can resist deformation when subjected to printing forces.

[0041] Both too large and too small hardness of the colloid 1 will affect the thickness uniformity. At the same time, too small hardness will also lead to insufficient strength. Therefore, in this embodiment, the hardness of the colloid 1 is A, and 70° ≤ A ≤ 90°. In other embodiments, the hardness of the colloid 1 can also be 80°.

[0042] The flatness of the colloid 1 is usually processed within ±30um. When the flatness of the colloid 1 is too large or too small, it will lead to poor printing thickness uniformity. Especially at the root 12 of the colloid 1, the colloid 1 has a root 12 far from the rigid plate 2, and the flatness of the root 12 is B, -30um ≤ B ≤ 30um. The flatness of the root 12 of the colloid 1 will affect the printing quality.

[0043] To solve the problem of deformation during the processing of the rigid plate 2, a plurality of through holes 22 are opened on the rigid plate 2, and the through holes 22 are arranged at intervals from the root 12 of the colloid 1. Specifically, the plurality of through holes 22 are arranged along the top of the rigid plate 2 far from the root 12, and are arranged at intervals from the top, and the interval is C, 5mm ≤ C ≤ 6mm. The plurality of through holes 22 are evenly arranged along the length direction of the rigid plate 2, so that the force on the screen printing squeegee 100 can be accurately applied, making the transfer of the ink more uniform during the printing process, ensuring the stability of the ink thickness of the printed matter, and improving the printing quality.

[0044] The flatness of the rigid plate 2 during processing releases stress by setting the through holes 22. It should be noted that the setting of the through holes 22 needs to avoid the root 12 and be set close to the top.

[0045] Taking the size of the screen printing squeegee 100 as 330*40*9mm (length * width * thickness) as an example, the squeegee includes a colloid 1 with a height h of 15mm and a rigid plate 2 with a height of 25mm, and the colloid 1 and the rigid plate 2 are connected in the height direction. The squeegee handle clamps the rigid plate 2.

[0046] (1) Rigid plate 2: The thickness E is 9mm and is composed of 3 layers of 3mm laminations. The rigid plate 2 with a thickness of 3mm in the middle has a height of 32.5mm, and a colloid 1 with a height of 15mm is embedded, and the embedding depth H is 7.5mm. The rigid plates 2 on both sides of the middle rigid plate 2 are rigid plates 2 with a thickness of 3mm and a height of 25mm.

[0047] (2) A plurality of through holes 22 with a diameter of 5.2 mm are drilled in the rigid plate 2, and the distance between adjacent through holes 22 is 38 mm. The plurality of through holes 22 are arranged along the length direction of the rigid plate 2. A receiving groove 11 with a depth of 7.5 mm is provided on the surface of the colloid 1 with a height of 15 mm facing the rigid plate 2.

[0048] At this time, H is 7.5 mm, h is 15 mm, D is 3 mm, and E is 9 mm.

[0049] For the screen printing squeegee 100 provided by the present utility model, the height of the colloid 1 is h, the rigid plate 2 is connected to the colloid 1, and at least a part of the connection between the rigid plate 2 and the colloid 1 is embedded in the colloid 1. The depth of the embedded part 21 of the rigid plate 2 embedded in the colloid 1 is H, h*1 / 4 ≤ H ≤ h*2 / 3. The thickness of the embedded part 21 is D, and the thickness of the rigid plate 2 is E, E*1 / 4 ≤ D ≤ E*1 / 2. In this way, not only can the printing thickness requirement be met, but also the screen printing squeegee 100 can have toughness when stressed and can be applicable to uneven printing objects.

[0050] Furthermore, due to the control of the printing thickness uniformity and stability, more prints can be made within the ink life; the squeegee operator can install it conveniently, improving the operation simplicity and being easy to operate; this device has a wide range of applications and can be applicable to various types of screen printing machines, having broad application prospects.

[0051] Furthermore, for the printing operation adopting the technical solution of the present utility model, the quality of the printed matter is significantly improved. At the same time, through the observation and statistics of the production process, the printing machine using the device of the present utility model also has obvious advantages in terms of production efficiency and labor cost.

[0052] Furthermore, the present utility model forms a sandwich squeegee by partially embedding the rigid plate 2 into the colloid 1. Not only can the printing thickness requirement be met, but also the screen printing squeegee 100 can have toughness when stressed and can be applicable to uneven printing objects, which can solve problems such as unstable squeegee existing in the prior art and improve the printing uniformity of the screen printing machine.

[0053] The present utility model also provides a screen printing device, which includes the above-mentioned screen printing squeegee 100.

[0054] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, those of ordinary skill in the art can make other different forms of changes or modifications without creative efforts, and all should belong to the protection scope of the present utility model.

Claims

1. A screen printing squeegee, characterized in that, Comprising: A colloid, the height of the colloid being h; A rigid plate, connected to the colloid, the hardness of the rigid plate being greater than that of the colloid, and at least a part of the connection between the rigid plate and the colloid is embedded in the colloid. The depth of the embedded part of the rigid plate in the colloid is H, where h*1 / 4 ≤ H ≤ h*2 / 3. The thickness of the embedded part is D, and the thickness of the rigid plate is E, where E*1 / 4 ≤ D ≤ E*1 / 2.

2. The screen printing squeegee according to claim 1, wherein The middle area at the bottom of the rigid plate extends towards the colloid to form the embedded part.

3. The screen printing squeegee according to claim 1, characterized in that, A receiving groove is provided at the corresponding position of the colloid in the embedded part, the notch of the receiving groove is arranged towards the rigid plate, and the embedded part is embedded in the receiving groove.

4. The screen printing squeegee according to claim 3, characterized in that, The depth of the receiving groove is H1, where 5.5 mm ≤ H1 ≤ 9.5 mm.

5. The screen printing squeegee according to claim 1, wherein The hardness of the colloid is A, where 70° ≤ A ≤ 90°.

6. The screen printing squeegee according to claim 1, wherein, The colloid has a root away from the rigid plate, and the flatness of the root is B, where -30 um ≤ B ≤ 30 um.

7. The screen printing squeegee according to claim 1, wherein, A plurality of through holes are provided on the rigid plate, and the through holes are spaced from the root of the colloid.

8. The screen printing squeegee according to claim 7, characterized in that, The plurality of through holes are arranged close to the top of the rigid plate away from the root, and are spaced from the top by C, where 5 mm ≤ C ≤ 6 mm.

9. The screen printing squeegee according to claim 7, characterized in that, The plurality of through holes are uniformly arranged along the length direction of the rigid plate.

10. A screen printing device, characterized in that, Including the screen printing squeegee according to any one of claims 1 to 9.

Images