Durable printing screen tool

Abstract

The utility model discloses a durable printing silk screen tool, including stainless steel outer frame, nylon silk screen and stainless steel screen, the stainless steel outer frame is closed frame structure, provides the installation support base, the nylon silk screen adapts the inside contour size of stainless steel outer frame, is pasted on its one side end surface, is as printing core function layer, the contour size of stainless steel screen and nylon silk screen is identical, is pasted on the one side of nylon silk screen far from printing operation, and both are fixed in stainless steel outer frame. The bottom of stainless steel screen is equipped with middle bulge, the bottom of stainless steel outer frame is equipped with adaptive groove, the surface of groove is equipped with through -hole, and the fixed plug is equipped in the through -hole, the outer skirt of middle bulge is equipped with the abutment stainless steel outer frame lower surface after assembly. The utility model discloses through double net body support and accurate structure design, significantly improves the durability, and optimizes printing quality, improves production efficiency, is applicable to the printing operation of new energy automobile and energy storage field related parts.

Description

Technical Field

[0001] This utility model relates to a durable printing screen fixture. Background Technology

[0002] In the fields of new energy vehicles and energy storage, battery thermal management systems and energy storage systems are core components. Among them, PTC heaters have become a common technical solution in this field due to their advantages such as high-efficiency heating and stable temperature control. To ensure the production quality of key components such as PTC heaters, the printing process is an important link in their manufacturing process, and the performance of the printing tooling directly affects the production efficiency and quality of the products.

[0003] Currently, most manufacturers in the industry use simple single-layer nylon screen printing fixtures for printing on related parts. However, this type of traditional printing fixture has the following significant drawbacks:

[0004] 1. Poor durability: Single-layer nylon mesh lacks an effective support structure. The mechanical strength of nylon material itself is limited. During long-term printing operations, the mesh needs to continuously withstand printing pressure, which can easily cause deformation, stretching, or even breakage, leading to tooling damage.

[0005] 2. Poor printing quality: Existing double-layer screen mesh structures often use stainless steel mesh with larger openings than nylon mesh to prevent glue penetration. However, this method reduces the support of the stainless steel mesh for the nylon mesh.

[0006] 3. Low production efficiency: Because single-layer nylon mesh is easily damaged, it is necessary to frequently stop the machine to replace the new mesh. This not only increases the operation process, but also causes production interruption, which seriously reduces the overall production efficiency and increases the cost of using mesh consumables.

[0007] Therefore, there is an urgent need for a printing fixture that can overcome the above-mentioned technical defects and has the characteristics of durability, anti-adhesive dripping, high efficiency and stability, so as to meet the demand for improved component production quality and capacity in the fields of new energy vehicles and energy storage. Utility Model Content

[0008] The purpose of this utility model is to provide a durable printing screen fixture, solving the technical problems of poor durability, poor printing quality, and low production efficiency of existing printing fixtures. The specific technical solution is as follows:

[0009] A durable printing screen fixture includes: a stainless steel outer frame, which is a closed frame structure used to provide a mounting support base; a nylon mesh adapted to the inner contour dimensions of the stainless steel outer frame and fitted to one end face of the stainless steel outer frame; and a stainless steel mesh with the same contour dimensions as the nylon mesh, fitted to the side of the nylon mesh away from the printing operation, and the stainless steel mesh and the nylon mesh are jointly fixed to the stainless steel outer frame; the bottom of the stainless steel mesh has an upwardly protruding central protrusion, and the bottom of the stainless steel outer frame has a groove that matches the central protrusion, the surface of the groove has multiple through holes, and a fixing plug is installed in each through hole.

[0010] Furthermore, an outer skirt is provided at the outer edge of the central protrusion. After assembly, the upper surface of the outer skirt abuts against the lower surface of the stainless steel frame. On the one hand, the outer skirt, through its tight contact with the lower surface of the stainless steel frame, can effectively limit the vertical displacement of the stainless steel mesh, preventing support failure caused by the "sag" of the stainless steel mesh during printing. On the other hand, the outer skirt extends along the outer edge of the central protrusion, blocking the horizontal displacement of the stainless steel mesh and preventing relative misalignment between the stainless steel mesh and the nylon mesh under long-term printing pressure, thereby ensuring the bonding accuracy of the two mesh layers.

[0011] Furthermore, the mesh size of the nylon mesh is smaller than that of the stainless steel mesh. The stainless steel mesh, acting as a "support layer," needs to provide stable support without compromising the function of the nylon mesh. The larger mesh size avoids obstructing the nylon mesh, ensuring that the adhesive can pass smoothly through the nylon mesh for printing.

[0012] Furthermore, the mesh on the nylon wire mesh is an upper mesh, which is an n-sided polygon; the mesh on the stainless steel wire mesh is a lower mesh, which is a 2n-sided polygon; after overlapping, the vertex of the upper mesh is located exactly at the center of the edge of the lower mesh.

[0013] The shape and overlapping method of the mesh are key designs for improving printing quality and support stability: Firstly, the overlapping of the n-sided upper mesh and the 2n-sided lower mesh at the "vertex-side-center" allows the edge of the lower mesh of the stainless steel mesh to form "point-to-point support" precisely with the vertex of the upper mesh of the nylon mesh, greatly increasing the support point density and preventing the nylon mesh from sinking due to local lack of support, ensuring the mesh is flat during printing and reducing pattern deformation; Secondly, this precise overlapping can form an anti-penetration gap structure, which does not affect the passage of glue, but also prevents glue from seeping between the two mesh layers, reducing the adhesion damage to the mesh after the glue cures, while reducing the difficulty of cleaning the mesh and extending the continuous use time of the tooling.

[0014] Furthermore, the fixing plug is made of elastic rubber, and it is interference-fitted with the through hole, compressing the central protrusion through its own elastic deformation. The elastic rubber material also has a certain cushioning effect, which can absorb some of the impact force during the printing operation, reduce the hard wear between the stainless steel mesh and the outer frame, and further improve the durability of the tooling.

[0015] Furthermore, the bonding surfaces of the stainless steel mesh and the nylon mesh are smooth planes. A smooth plane ensures that the bonding surfaces of the two mesh layers are gap-free and free from friction damage, preventing premature replacement of the nylon mesh due to scratches, and ensuring that the supporting force is evenly distributed to every part of the nylon mesh, preventing mesh deformation caused by localized stress concentration.

[0016] Furthermore, the outer skirt and the stainless steel mesh are integrally formed.

[0017] Furthermore, the width of the outer skirt is 5-15mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] I. Significantly Improved Durability: By using stainless steel mesh to provide full support for the nylon wire mesh, combined with the stable fixation of the stainless steel outer frame, the problem of insufficient mechanical strength and easy deformation and breakage of single-layer nylon wire mesh is solved, thus extending the service life of the tooling.

[0020] II. Optimized Printing Quality: By adopting a mesh size difference design and a precise overlapping method of n-sided and 2n-sided meshes, the printing quality is improved while ensuring support and effectively preventing glue penetration. This avoids printing defects caused by glue residue or uneven support, thus improving printing accuracy and product qualification rate.

[0021] Third, improved production efficiency: The improved durability of tooling reduces the frequency of wire mesh replacement, reduces downtime and operating procedures, and reduces the cost of wire mesh consumables, thus balancing production efficiency and economy. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a durable printing screen tool;

[0023] Figure 2 This is an exploded view of a durable wire mesh fixture;

[0024] Figure 3 This is a structural diagram of stainless steel mesh;

[0025] Figure 4 This is a top view of the stainless steel mesh.

[0026] Figure 5 yes Figure 3A magnified view of part A in the middle;

[0027] Figure 6 This is a structural schematic diagram of the stainless steel outer frame;

[0028] In the diagram: 1. Stainless steel outer frame, 11. Fixing plug, 2. Nylon wire mesh, 21. Mesh opening, 3. Stainless steel mesh, 31. Bottom mesh opening, 32. Middle protrusion, 33. Outer skirt. Detailed Implementation

[0029] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0030] Example 1: A durable printing screen fixture structure includes a stainless steel frame 1, a nylon mesh 2, and a stainless steel mesh 3. The stainless steel frame 1 is a closed frame structure used to provide a mounting support base. The nylon mesh 2 is adapted to the inner contour dimensions of the stainless steel frame 1 and fits against one end face of the stainless steel frame 1. The stainless steel mesh 3 has the same contour dimensions as the nylon mesh 2 and is fitted against the side of the nylon mesh 2 away from the printing operation. The stainless steel mesh 3 and the nylon mesh 2 are jointly fixed to the stainless steel frame 1.

[0031] The stainless steel mesh 3 has an upward-protruding central protrusion 32 at its bottom. The stainless steel outer frame 1 has a groove at its bottom that matches the central protrusion 32. The surface of the groove has multiple through holes, and a fixing plug 11 is installed in each through hole. An outer skirt 33 is provided at the outer edge of the central protrusion 32. After assembly, the upper surface of the outer skirt 33 abuts against the lower surface of the stainless steel outer frame 1. The mesh on the nylon wire mesh 2 is a top mesh 21, which is quadrilateral. The mesh on the stainless steel mesh 3 is a bottom mesh 31, which is octagonal. After the two are overlapped, the apex of the top mesh 21 is located at the center of the edge of the bottom mesh 31. The fixing plug 11 is made of elastic rubber and is interference-fitted with the through holes. It compresses the central protrusion 32 through its own elastic deformation.

[0032] In this embodiment, during assembly, the nylon mesh 2 is first laid flat on the upper end face of the stainless steel outer frame 1, then the stainless steel mesh 3 is attached to the lower side of the nylon mesh 2, so that the central protrusion 32 is embedded in the groove, and the outer skirt 33 abuts against the lower surface of the stainless steel outer frame 1. Finally, it is pressed and fixed by the fixing plug 11 to complete the overall assembly. During the printing operation, the stainless steel mesh 3 provides uniform support for the nylon mesh 2 to prevent its deformation. At the same time, the special mesh overlap design prevents glue penetration and ensures stable printing quality.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A durable printing screen fixture, characterized in that, include: Stainless steel outer frame (1), wherein the stainless steel outer frame (1) is a closed frame structure used to provide an installation support base; Nylon wire mesh (2), the nylon wire mesh (2) is adapted to the inner contour size of the stainless steel outer frame (1) and fits on one side end face of the stainless steel outer frame (1); Stainless steel mesh (3) has the same outline size as the nylon mesh (2), and is fitted on the side of the nylon mesh (2) away from the printing operation. The stainless steel mesh (3) and the nylon mesh (2) are fixed together on the stainless steel frame (1). The bottom of the stainless steel mesh (3) is provided with an upwardly protruding middle protrusion (32), and the bottom of the stainless steel outer frame (1) is provided with a groove that matches the middle protrusion (32). The surface of the groove is provided with multiple through holes, and a fixing plug (11) is provided in the through holes.

2. The durable printing screen fixture according to claim 1, characterized in that, The outer edge of the central protrusion (32) is provided with an outer skirt (33). After assembly, the upper surface of the outer skirt (33) abuts against the lower surface of the stainless steel outer frame (1).

3. The durable printing screen fixture according to claim 1, characterized in that, The mesh size of the nylon wire mesh (2) is smaller than that of the stainless steel wire mesh (3).

4. The durable printing screen fixture according to claim 3, characterized in that, The nylon wire mesh (2) has mesh openings (21), which are n-sided; the stainless steel mesh (3) has mesh openings (31), which are 2n-sided. After overlapping and covering, the vertex of the upper mesh (21) is located at the center of the edge of the lower mesh (31).

5. A durable printing screen fixture according to any one of claims 1-4, characterized in that, The fixing plug (11) is made of elastic rubber. The fixing plug (11) is interference-fitted with the through hole and squeezes the middle protrusion (32) through its own elastic deformation.

6. The durable printing screen fixture according to claim 1, characterized in that, The surfaces where the stainless steel mesh (3) and the nylon mesh (2) meet are smooth planes.

7. The durable printing screen fixture according to claim 1, characterized in that, The outer skirt (33) and the stainless steel mesh (3) are integrally formed.

8. A durable printing screen fixture according to claim 7, characterized in that, The width of the outer skirt (33) is 5-15mm.

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