Screen printing device
By automatically adjusting the drop distance of the screen printing head assembly in the screen printing device, the common problems of deinking and ink breaking of polyethylene foam in the printing process are solved, and a higher quality and durable printing effect is achieved.
Patent Information
- Application Number
- CN202421560339.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-02
AI Technical Summary
During the printing process, polyethylene foam often experiences problems such as deinking, ink breaking, ink leakage, inaccurate alignment or blurred printing, which affects the appearance of the product and the identification during use. The existing technology manually adjusts the printing grid distance and pressure, but due to the proficiency of the operator, it is easy to cause improper adjustment or non-standard adjustment.
A silk screening device is provided, including a storage table, a silk screen head assembly and a height adjustment assembly. The distance between the silk screen head assembly and the substrate is measured by the distance measuring structure, and the height adjustment assembly is used to adjust the drop distance of the silk screen head assembly according to the distance to ensure reasonable pressure application.
By accurately adjusting the drop distance of the screen printing head assembly, ensure that the pores on the surface of the printing material are compressed, forming a flat surface, and the ink penetrates evenly, achieving the expected printing effect, improving the printing quality and durability of the screen printing plate.
Smart Images
Figure CN222844991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silk screen printing, in particular to a silk screen printing device. Background Art
[0002] Due to problems in the printing process, polyethylene foam (EPE) often suffers from ink de-inking, ink breakage, ink leakage, misalignment or blurred printing, which affects the product appearance and identification during use.
[0003] The current solution to the above problems is to manually adjust the printing mesh distance and pressure to improve the screen printing quality. However, this adjustment method is greatly affected by the operator's operating proficiency and other subjective factors, and it is very easy to make improper or non-standard adjustments.
[0004] Among them, the wrong screen spacing may cause the screen printing plate to be subjected to excessive pressure or friction during the printing process, thereby damaging the surface of the screen printing plate, affecting the printing quality and durability of the screen printing plate; setting the printing screen spacing too large or too small may still lead to screen printing failures such as blurred printed images, ink overflow, and ink pulling, which not only affects the printing effect, but may also cause direct physical damage to the screen printing plate; the adjustment of the printing screen spacing also needs to consider factors such as the viscosity of the ink and the characteristics of the substrate. If the ink viscosity is too high or the surface of the substrate is too rough, the wrong screen spacing will cause the ink to dry too quickly on the screen printing plate or cannot be transferred evenly, thereby damaging the screen printing plate. Utility Model Content
[0005] In order to solve at least the above technical problems existing in the prior art, the utility model provides a screen printing device.
[0006] On the one hand, the utility model provides a screen printing device, including a storage table, a screen printing head assembly and a height adjustment assembly; the storage table includes a bearing surface, and the bearing surface is used to place a substrate; the screen printing head assembly is located above the substrate, and the screen printing head assembly includes a base, a screen printing structure and a distance measuring structure, the screen printing structure and the distance measuring structure are respectively connected to the base, and the distance measuring structure is used to measure the distance between the base and the surface of the substrate; the height adjustment assembly is connected to the base, and the height adjustment assembly is used to adjust the position of the base according to the distance along the direction perpendicular to the surface of the substrate, so that the screen printing structure has a set pressure on the substrate.
[0007] In some embodiments, the screen printing head assembly further includes an image acquisition structure, and the image acquisition structure is used to acquire image information of the substrate; the image information of the substrate includes boundary image information and / or surface image information.
[0008] In some embodiments, the image acquisition structure includes a first camera and a second camera; the first camera and the second camera are disposed on the base.
[0009] In some embodiments, the base includes a connecting end, and the base includes a mounting end on the opposite side of the connecting end, the connecting end is connected to the height adjustment component, and the mounting end is connected to the ranging structure; the first camera and the second camera are respectively connected to two opposite sides between the connecting end and the mounting end.
[0010] In some embodiments, the screen printing head assembly also includes a pressure detection structure; the pressure detection structure is connected to the screen printing structure, or the pressure detection structure is arranged on a printing plate above the substrate, and the pressure detection structure is used to obtain the pressure value between the screen printing structure and the printing plate.
[0011] In some embodiments, the height adjustment component includes a pneumatic lifting structure and a control valve; the pneumatic lifting structure is connected to the control valve, the base is connected to the pneumatic lifting structure, and the control valve is used to control the height of the pneumatic lifting structure in a direction perpendicular to the surface of the substrate.
[0012] In some embodiments, the height adjustment assembly also includes a lifting frame structure; the pneumatic lifting structure is connected to the lifting frame structure, and the lifting frame structure is used to adjust the height of the pneumatic lifting structure and the screen printing head assembly in a direction perpendicular to the surface of the substrate.
[0013] In some embodiments, the lifting frame structure includes a bracket and a lifting drive member, the bracket includes a lateral adjustment component, and the lateral adjustment component is connected to the pneumatic lifting structure; the lifting drive member is connected to the bottom of the bracket and is used to drive the bracket to rise and fall.
[0014] In some embodiments, the storage table further includes a support base, and the bearing surface is arranged on the top of the support base; the support base further includes a control panel and / or a display screen.
[0015] In some embodiments, a data storage unit is further included, and the storage unit is used to store the parameters of the spacing, the parameters of the position and the parameters of the set pressure corresponding to the substrate.
[0016] The utility model provides a screen printing device. During screen printing operation, the screen printing head assembly needs to apply reasonable pressure to the substrate, that is, to control the descending distance of the screen printing head assembly. After replacing a new substrate, the distance between the screen printing head assembly and the substrate is obtained by the distance measuring structure, and the descending distance of the screen printing head assembly is determined according to the distance. In the technical solution of the utility model, the substrate becomes under greater pressure (a reasonable pressure value is applied), and the pores on the surface of the substrate are compressed, thereby forming a flat surface, and the ink evenly penetrates into the substrate through the printing plate, thereby achieving the expected printing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:
[0018] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.
[0019] Figure 1 A schematic diagram of the structure of a screen printing device provided in an embodiment of the utility model;
[0020] Figure 2 A schematic diagram of the structure of a storage table in a screen printing device provided in an embodiment of the utility model;
[0021] Figure 3 A schematic structural diagram of a screen printing head assembly in a screen printing device provided by an embodiment of the utility model;
[0022] Figure 4 A schematic structural diagram of a height adjustment component in a screen printing device provided in an embodiment of the utility model.
[0023] In the figure:
[0024] 1: Storage table; 2: Screen printing head assembly; 3: Height adjustment assembly; 4: Substrate;
[0025] 11: bearing surface; 12: supporting base; 13: control panel; 14: display screen;
[0026] 21: base; 22: silk screen structure; 23: distance measurement structure; 24: image acquisition structure; 241: first camera; 242: second camera;
[0027] 31: pneumatic lifting structure; 32: control valve; 33: lifting frame structure; 331: bracket; 332: lateral adjustment component; 333: lifting drive member. DETAILED DESCRIPTION
[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0029] An embodiment of the utility model provides a silk screen printing device, including a storage table, a silk screen printing head assembly and a height adjustment assembly; the storage table is used to place substrates and some other auxiliary equipment, the silk screen printing head assembly is used to complete the silk screen printing operation, and can obtain the distance between the new substrate and the silk screen printing head assembly, the height adjustment assembly is connected to the silk screen printing head assembly, and can adjust the descending distance of the silk screen printing head assembly according to the distance, so as to achieve the purpose of adjusting the pressure.
[0030] The following describes in detail the components of the screen printing device provided by the embodiment of the utility model, and the positional relationship and connection relationship between the components in conjunction with the accompanying drawings.
[0031] like Figures 1 to 4 As shown, in the embodiment of the utility model, the placement table 1 includes a bearing surface 11, and the bearing surface 11 is used to place the substrate 4; for example, the material of the substrate 4 is polyethylene foam (EPE), if the pressure of the screen printing head assembly 2 during screen printing is insufficient, the printing effect will be affected. Therefore, it is necessary to apply precise pressure to the substrate 4, and the specific method is:
[0032] The screen printing head assembly 2 is located above the substrate 4. The screen printing head assembly 2 includes a base 21, a screen printing structure 22 and a distance measuring structure 23. The screen printing structure 22 and the distance measuring structure 23 are respectively connected to the base 21. The distance measuring structure 23 is used to measure the distance between the base 21 and the surface of the substrate 4. After one printing is completed, a new substrate 4 is replaced on the bearing surface 11, and the distance between the base 21 (i.e., the screen printing structure 22) and the surface of the substrate 4 is measured by the distance measuring structure 23, and the distance information is transmitted to the control device. The control device controls the height adjustment assembly 3 according to the distance information to adjust the position of the base 21. For example, the distance information is pre-stored in the control device, and the height adjustment of the height adjustment assembly 3 to the position of the base 21 is determined by comparison. For example, the actual distance information is obtained by the distance measuring structure 23, and the height position adjustment information corresponding to the distance information is stored in the control device. After the required height position adjustment is determined by comparison, the position adjustment operation is performed by the height adjustment assembly 3.
[0033] In the technical solution of the utility model, the height adjustment component 3 is connected to the base 21, and the height adjustment component 3 is used to adjust the position of the base 21 along the direction perpendicular to the surface of the substrate 4 according to the distance information, so that the screen printing structure 22 has a set pressure on the substrate 4. The specific structure and adjustment method of the height adjustment component 3 are described below.
[0034] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, the screen printing head assembly 2 also includes an image acquisition structure 24, and the image acquisition structure 24 is used to acquire image information of the substrate 4; the image information of the substrate 4 includes boundary image information and / or surface image information.
[0035] The image acquisition structure 24 is located above the substrate 4, and can move back and forth above the substrate 4 with the screen printing head assembly 2 (the movement method is described later). During the movement, the image information of the substrate 4 is obtained, and the size of the substrate 4 is determined by analyzing the image information. Then, the descending distance of the screen printing structure 22 can be determined according to the size of the substrate 4 and the position information of the screen printing structure 22. That is, there are two factors that affect the descending distance of the screen printing structure 22, one is the height information of the screen printing structure 22, and the other is the boundary image information of the substrate 4. These two factors can determine more accurate pressure control.
[0036] In addition, after the screen printing operation is completed, the image acquisition structure 24 can also obtain surface image information of the substrate 4, obtain a clear image after screen printing, and analyze the image through a computer device to determine the finished product yield after screen printing.
[0037] In the embodiment of the present invention, the manner in which the image information method determines the area (boundary) and image information of the substrate 4 is not limited.
[0038] For example, the image acquisition structure 24 includes a first camera 241 and a second camera 242; the first camera 241 and the second camera 242 are arranged on the base 21. Image information of the same position or different positions can be obtained through the two cameras. For example, the base 21 includes a connecting end, and the base 21 includes a mounting end on the opposite side of the connecting end, the connecting end is connected to the height adjustment component 3, and the mounting end is connected to the ranging structure 23; the first camera 241 and the second camera 242 are respectively connected to the two opposite sides between the connecting end and the mounting end. The first camera 241 and the second camera 242 are located on both sides of the base 21, and the image information of the substrate 4 on both sides of the base 21 is collected by the first camera 241 and the second camera 242, respectively, wherein the image information collected by the two cameras may include repeated parts.
[0039] In the embodiment of the utility model, the screen printing head assembly 2 also includes a pressure detection structure (not shown in the figure); the pressure detection structure is connected to the screen printing structure 22, or the pressure detection structure is arranged on the printing plate above the substrate 4. When the substrate 4 is placed and the image information and distance information are collected, the screen printing structure 22 is controlled to descend. During the descent, the screen printing structure 22 contacts the printing plate, so that the pressure detection structure, for example, the pressure detection structure is a pressure sensor, starts to obtain a pressure value. Among them, the descent distance of the screen printing structure 22 is determined according to calculation. When it reaches the required position, the pressure sensor obtains a fixed pressure value, which can be used as a monitoring value, that is, the pressure value is used to judge whether the screen printing structure 22 meets the set pressure requirements after descending a certain distance; in addition, the pressure value can also be used as subsequent reference data. Specifically:
[0040] In the technical solution of the utility model, the screen printing device also includes a data storage unit, which is used to store the parameters of the spacing, position and set pressure corresponding to the substrate 4. The data can be used as historical data, that is, to record the data parameters of the current screen printing process of the substrate 4. In addition, the data parameters can also be used as reference data, that is, to determine the parameter information required for the current material or shape of the substrate 4.
[0041] Based on this, the pressure value information acquired by the pressure sensor can be stored in the data storage unit, so that the current printing material 4 corresponds to a reasonable pressure value information, which further facilitates the subsequent query and use of the data.
[0042] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, the height adjustment component 3 includes a pneumatic lifting structure 31 and a control valve 32; the pneumatic lifting structure 31 is connected to the control valve 32, the base 21 is connected to the pneumatic lifting structure 31, and the control valve 32 is used to control the height of the pneumatic lifting structure 31 along the direction perpendicular to the surface of the substrate 4.
[0043] The pneumatic lifting structure 31 includes a telescopic part, which is connected to the base 21. The lifting and lowering of the telescopic part is adjusted pneumatically to achieve the adjustment of the position of the base 21. A control valve 32 is arranged on the gas path. For example, the control valve 32 is a solenoid valve. The gas supply of the gas path is adjusted by the solenoid valve to achieve accurate control of the position of the base 21.
[0044] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, the height adjustment assembly 3 also includes a lifting frame structure 33; the pneumatic lifting structure 31 is connected to the lifting frame structure 33, and the lifting frame structure 33 is used to adjust the height of the pneumatic lifting structure 31 and the screen printing head assembly 2 along the direction perpendicular to the surface of the substrate 4.
[0045] The lifting frame structure 33 can change the height and position of the pneumatic lifting structure 31 and the screen printing head assembly 2 as a whole, thereby realizing the separation between the above structure and the storage table 1, so as to facilitate the taking and placing operations of the printing material 4 (printed and unprinted).
[0046] For example, the lifting frame structure 33 includes a bracket 331 and a lifting drive 333. The bracket 331 includes a lateral adjustment component 332. The lateral adjustment component 332 is connected to the pneumatic lifting structure 31. The lifting drive 333 is connected to the bottom of the bracket 331 and is used to drive the bracket 331 to rise and fall. For example, the lifting drive 333 is a lifting cylinder, and the lifting cylinder is used to drive the bracket 331 to rise and fall, so that the position between the lifting frame structure 33 and the storage table 1 is changed, and the printing substrate 4 can be taken and placed.
[0047] The lifting frame structure 33 is the supporting structure of the screen printing head assembly 2. When the screen printing head assembly 2 is in use, it needs to move back and forth to complete the screen printing operation. In the embodiment of the utility model, the reciprocating structure is set on the lifting frame structure 33 to complete the corresponding action.
[0048] For example, the lateral adjustment component 332 is a cylinder structure (such as a cylinder), which is arranged on the bracket 331, and the telescopic rod of the cylinder structure drives the screen printing head component 2 to move back and forth, thereby completing the screen printing operation. For example, the lateral adjustment component 332 can also be other driving forms, such as a transmission chain, a conveyor belt or a lead screw.
[0049] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, the storage table 1 further includes a support base 12, and a bearing surface 11 is arranged on the top of the support base 12; the support base 12 further includes a control panel 13 and / or a display screen 14. Auxiliary operations can be performed through the control panel 13 or the display screen 14, for example, a control button or a start / stop button of the device that needs to be silk-screened is arranged on the control panel 13, and silk-screen information such as real-time pressure value, yield rate, etc. is displayed on the display screen 14.
[0050] The utility model provides a screen printing device. During screen printing operation, the screen printing head assembly 2 needs to apply reasonable pressure to the substrate 4, that is, to control the descending distance of the screen printing head assembly 2. After replacing the new substrate 4, the distance between the screen printing head assembly 2 and the substrate 4 is obtained by the distance measuring structure 23, and the descending distance of the screen printing head assembly 2 is determined according to the distance. In the technical solution of the utility model, the substrate 4 is compressed due to the increase in pressure (a reasonable pressure value), thereby forming a flat surface, and the ink is evenly penetrated into the substrate through the printing plate, thereby achieving the expected printing effect.
[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.
[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0053] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A screen printing device, characterized in that: It comprises a storage table (1), a screen printing head assembly (2) and a height adjustment assembly (3); The storage platform (1) comprises a carrying surface (11), and the carrying surface (11) is used to place a printing substrate (4); The screen printing head assembly (2) is located above the substrate (4), and the screen printing head assembly (2) comprises a base (21), a screen printing structure (22) and a distance measuring structure (23), the screen printing structure (22) and the distance measuring structure (23) are respectively connected to the base (21), and the distance measuring structure (23) is used to measure the distance between the base (21) and the surface of the substrate (4); The height adjustment component (3) is connected to the base (21), and the height adjustment component (3) is used to adjust the position of the base (21) in a direction perpendicular to the surface of the substrate (4) according to the spacing, so that the screen printing structure (22) has a set pressure on the substrate (4).
2. The screen printing device according to claim 1, characterized in that: The screen printing head assembly (2) further comprises an image acquisition structure (24), wherein the image acquisition structure (24) is used to acquire image information of the printing material (4); The image information of the printing material (4) includes boundary image information and / or surface image information.
3. The screen printing device according to claim 2, characterized in that: The image acquisition structure (24) comprises a first camera (241) and a second camera (242); The first camera (241) and the second camera (242) are arranged on the base (21).
4. The screen printing device according to claim 3, characterized in that: The base (21) comprises a connection end, and the base (21) comprises a mounting end located on the opposite side of the connection end, the connection end is connected to the height adjustment component (3), and the mounting end is connected to the distance measuring structure (23); The first camera (241) and the second camera (242) are respectively connected to two opposite sides between the connection end and the installation.
5. The screen printing device according to claim 1, characterized in that: The screen printing head assembly (2) also includes a pressure detection structure; The pressure detection structure is connected to the silk-screen structure (22), or the pressure detection structure is arranged on a printing plate above the printing material (4), and the pressure detection structure is used to obtain the pressure value between the silk-screen structure (22) and the printing plate.
6. The screen printing device according to claim 1, characterized in that: The height adjustment component (3) comprises a pneumatic lifting structure (31) and a control valve (32); The pneumatic lifting structure (31) is connected to the control valve (32), the base (21) is connected to the pneumatic lifting structure (31), and the control valve (32) is used to control the height of the pneumatic lifting structure (31) in a direction perpendicular to the surface of the printing material (4).
7. The screen printing device according to claim 6, characterized in that: The height adjustment assembly (3) further comprises a lifting frame structure (33); The pneumatic lifting structure (31) is connected to the lifting frame structure (33), and the lifting frame structure (33) is used to adjust the height of the pneumatic lifting structure (31) and the screen printing head assembly (2) in a direction perpendicular to the surface of the substrate (4).
8. The screen printing device according to claim 7, characterized in that: The lifting frame structure (33) comprises a bracket (331) and a lifting drive member (333), the bracket (331) comprises a lateral adjustment component (332), and the lateral adjustment component (332) is connected to the pneumatic lifting structure (31); The lifting drive member (333) is connected to the bottom of the bracket (331) and is used to drive the bracket (331) to rise and fall.
9. The screen printing device according to any one of claims 1 to 8, characterized in that: The storage table (1) further comprises a supporting base (12), and the bearing surface (11) is arranged on the top of the supporting base (12); The support base (12) also includes a control panel (13) and / or a display screen (14).
10. The screen printing device according to any one of claims 1 to 8, characterized in that: It also comprises a data storage unit, wherein the storage unit is used to store the parameters of the spacing, the parameters of the position and the parameters of the set pressure corresponding to the printing material (4).