Ultrasonic welding fixture for ion exchange resin

Abstract

This utility model discloses an ultrasonic welding fixture for ion exchange resin, including a base and a cap. The base has a first base plate and a second base plate arranged concentrically. The first base plate has a circular groove in its center for accommodating the ion exchange resin. The second base plate surrounds the first base plate, forming an annular platform for positioning the substrate layer. The cap has an annular structure with a central through hole. The inner wall of the cap has pressure teeth. The cap and the base form a rotating pair. Through rotational engagement, the pressure teeth fully contact the welding surface of the substrate layer and generate a squeezing effect, driving the PP filter cotton and PET mesh to rotate and form a spiral pattern, forming an annular thickened welding layer. Through the above method, this utility model's ultrasonic welding fixture for ion exchange resin forms a local annular thickened layer in the welding area by spin forming, improving welding strength and sealing performance. The material usage increases by only 2-3%, greatly reducing material costs. The fixture is simple and durable, has high production efficiency, and reduces overall costs.

Description

Technical Field

[0001] This utility model relates to the field of ion exchange resin encapsulation tooling technology, and in particular to an ultrasonic welding tooling for ion exchange resin. Background Technology

[0002] In the field of ion exchange resin encapsulation, sealing treatment is required to ensure stable performance and prevent leakage.

[0003] Currently, the commonly used materials for encapsulating ion exchange resins typically employ a two-layer fabric structure: a layer of PP filter cotton and a layer of PET mesh. The PP filter cotton is only 0.2mm thick, and the PET mesh is 0.15mm thick, with a total thickness of only 0.35mm when combined.

[0004] In actual production, the use of ultrasonic welding to seal this two-layer fabric structure presents significant challenges. Due to the thinness of the welding material, it is difficult to achieve a strong connection through ultrasonic welding, frequently resulting in weak welds and seal failures, which seriously affect the quality and reliability of the product.

[0005] To address the issue of weak welds, the current conventional approach is to increase the thickness of the welding material. However, this method has significant drawbacks: on the one hand, adding extra material alters the original structure and performance of the product, negatively impacting the effectiveness of the ion exchange resin; on the other hand, increasing the material inevitably raises production costs, reducing the product's competitiveness in the market.

[0006] Therefore, the existing ion exchange resin sealing welding technology has technical problems that urgently need to be solved. There is an urgent need to develop a new technical solution that can effectively solve the problem of weak welding caused by the material being too thin, without negatively affecting product performance or increasing production costs too much. Utility Model Content

[0007] The main technical problem solved by this utility model is to provide an ultrasonic welding fixture for ion exchange resin, which uses a spinning method to form a local annular thickening layer in the welding area, thereby improving the welding strength and sealing performance. The material consumption increases by only 2-3%, greatly reducing material costs. The fixture is simple and durable, has high production efficiency, and controls the overall cost.

[0008] To solve the above-mentioned technical problems, the present invention provides a technical solution: an ultrasonic welding fixture for ion exchange resin, comprising:

[0009] A base for mounting the component to be welded, wherein the component to be welded includes a base layer, a ion exchange resin to be coated, and a coating layer.

[0010] A screw cap is used to spin-press the bottom liner, which includes a PET mesh and PP filter cotton covering the PET mesh;

[0011] The base has a first base and a second base arranged concentrically. The first base has a circular groove in the center for accommodating the ion exchange resin. The second base is arranged around the first base to form an annular platform for positioning the bottom liner.

[0012] The cap has a ring-shaped structure with a central through hole. The inner wall of the cap is provided with pressure teeth. The cap and the base form a rotating pair. Through rotational engagement, the pressure teeth fully contact the welding surface of the bottom liner and generate a squeezing effect, which drives the PP filter cotton and PET mesh to rotate and form a spiral pattern, forming an annular thickened welding layer.

[0013] In a preferred embodiment of this utility model, the thickness of the annular thickened welding layer is 1.5-2.4 mm.

[0014] In a preferred embodiment of this utility model, the inner diameter of the central ring of the screw cap is slightly larger than the outer diameter of the first chassis, and the outer diameter of the screw cap is adapted to the outer diameter of the second chassis.

[0015] In a preferred embodiment of the present invention, the bottom of the circular groove of the first chassis is provided with a vent hole.

[0016] In a preferred embodiment of the present invention, the first chassis edge is provided with an annular boss, and the surface of the annular boss is provided with anti-slip serrations.

[0017] In a preferred embodiment of the present invention, the tooth profile of the pressure tooth pattern includes a working inclined surface, which directly corresponds to the welding surface of the underlayer.

[0018] In a preferred embodiment of the present invention, a positioning block is further included, and the bottom surface of the positioning block may be provided with a rubber buffer layer.

[0019] In a preferred embodiment of this utility model, the screw cap and the positioning block are made of polycarbonate plastic parts.

[0020] The beneficial effects of this utility model are as follows: By using spin forming, the material flow is controlled in the welding area of ​​the thin composite material to form a ring-shaped locally thickened welding layer. By locally increasing the thickness of the welding area, the bonding strength of the welding interface is improved, making the welding operation easier to implement, while significantly improving the welding firmness and sealing reliability. Compared with the traditional comprehensive thickening scheme, precise thickening is achieved only in the welding area that needs to be strengthened, and the overall material consumption only increases by 2-3%, greatly reducing material costs. The optimized spin forming tooling has a simple structure, is easy to manufacture, and has a long service life, which greatly reduces the overall production cost. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of the ultrasonic welding fixture base for ion exchange resin of this utility model;

[0023] Figure 2 This is a schematic diagram of a preferred embodiment of the ultrasonic welding fixture for ion exchange resin of this utility model.

[0024] Figure 3 This is a three-dimensional structural schematic diagram of a preferred embodiment of the ultrasonic welding fixture for ion exchange resin of this utility model.

[0025] Figure 4 This is a schematic diagram of a preferred embodiment of the present invention, showing the bottom liner layer after spinning and combined with the ion exchange resin.

[0026] Figure 5 This is a schematic diagram of a preferred embodiment of the present invention after welding the substrate, exchange resin and the coating surface layer;

[0027] The components in the attached diagram are labeled as follows:

[0028] 1. Substrate, 2. Exchange resin, 3. Coating layer, 4. Base, 41. First base plate, 42. Second base plate, 43. Annular boss, 44. Anti-slip teeth, 5. Screw cap, 6. Vent hole, 7. Pressure teeth, 71. Working slope, 8. Annular thickened welding layer. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] This utility model relates to a preferred embodiment of an ultrasonic welding fixture for ion exchange resin.

[0032] Please see Figure 1-5 The ultrasonic welding fixture for the exchange resin includes a base and a screw cap.

[0033] The base 4 is used to install the component to be welded. The component to be welded preferably includes a base layer 1, an exchange resin 2 to be wrapped, and a covering layer 3. The base layer 1, the exchange resin 2, and the covering layer 3 are arranged in sequence and then welded to ensure the seal of the exchange resin.

[0034] The screw cap 5 is used to spin-press the bottom liner 1, wherein the bottom liner 1 includes a PET mesh and PP filter cotton covering the PET mesh, and the initial thickness of the two after being stacked is 0.35mm.

[0035] Specifically, the first is the base 4, which includes a first base plate 41 and a second base plate 42 arranged concentrically. The first base plate 41 has a circular groove in the center for accommodating the exchange resin, and the second base plate 42 is arranged around the first base plate 41 to form an annular platform for positioning the bottom liner 1.

[0036] The diameters of the aforementioned base liner 1 and the covering layer 3 are adapted to the diameter of the second base plate 42. The inner diameter of the central ring of the aforementioned cap 5 is slightly larger than the outer diameter of the first base plate 41, and the outer diameter of the cap 5 is adapted to the outer diameter of the second base plate 42, so that the cap 5 can be accurately fitted onto the base plate 4, thereby achieving stable pressure and positioning of the base liner 1 and improving the reliability of pressure application and welding accuracy.

[0037] Furthermore, the bottom of the circular groove of the first chassis 41 is provided with a vent hole 6, which is used to discharge the gas generated by the heat exchange resin during the welding process and prevent the gas from accumulating and affecting the welding quality.

[0038] Furthermore, the first chassis 41 is provided with an annular boss 43 on its edge, and the surface of the annular boss 43 is provided with anti-slip teeth 44, which can increase the friction between the component to be welded and prevent the component from shifting during the welding process.

[0039] Secondly, there is the screw cap 5, which has a ring-shaped structure with a central through hole. The inner wall of the screw cap 5 is provided with pressure teeth 7. The screw cap 5 and the base 4 form a rotating pair. During the screwing process, the pressure teeth 7 are fully in contact with the welding surface of the bottom liner 1 through rotational meshing and generate a squeezing effect, which drives the PP filter cotton and PET mesh to rotate and form a spiral-patterned annular thickened welding layer 8.

[0040] The spinning action of the cap 5 increases the thickness of the annular thickened weld layer 8 to 1.5-2.4 mm, preferably 2 mm, thereby increasing the thickness of the weld surface and improving weld strength and sealing performance.

[0041] Based on the above structure, the tooth profile of the pressure tooth 7 includes a working inclined surface 71, which directly corresponds to the welding surface of the inner liner 1. During the spinning process, the working inclined surface 71 applies oblique pressure to the welding surface, promoting plastic flow at the edge of the welding surface.

[0042] In a further preferred embodiment, the ultrasonic welding fixture for ion exchange resin of this invention may further include a positioning block. The bottom surface of the positioning block is used for the surface of the ion exchange resin. The positioning block applies vertical pressure to the surface of the ion exchange resin to further fix it, avoid displacement caused by external force during the spinning process, and ensure spinning stability.

[0043] Preferably, the bottom surface of the positioning block may be provided with a rubber buffer layer, which is used to avoid damage to the surface of the exchange resin when compressing the exchange resin, and at the same time, it can increase the friction and further enhance the compression effect.

[0044] The cap 5 and the positioning block are made of polycarbonate plastic parts, which have high strength and good heat resistance, ensuring the reliability of the tooling during the spinning process.

[0045] The working process of this novel ultrasonic welding fixture for heat exchange resin is as follows:

[0046] Pre-installation stage:

[0047] The inner liner 1, composed of PET mesh and PP filter cotton, is placed on the annular platform of the second chassis 42, and the ion exchange resin is placed in the circular groove of the first chassis 41.

[0048] Positioning phase:

[0049] Press the cap 5 down along the vertical axis to make the central through hole and the first base plate 41 concentrically fit, press the positioning pressure block to press the exchange resin, and apply pre-compression stress to the exchange resin through the elastic buffer layer.

[0050] Spin forming stage:

[0051] The cap 5 is rotated at a constant speed. During the rotation of the cap, the working inclined surface 71 of the pressure tooth pattern 7 contacts the bottom liner 1. As the rotation continues, the PP filter cotton and PET mesh are axially compressed and radially flowed by the progressive extrusion of the pressure tooth pattern 7, forming a spiral-patterned annular thickened welding layer 8.

[0052] Welding curing:

[0053] Remove the positioning block, cover the above-mentioned molded component with the covering layer 3, and weld it using ultrasonic welding along the position of the formed annular thickened welding layer.

[0054] The beneficial effects of this novel ultrasonic welding fixture for ion exchange resin are:

[0055] By spinning, a ring-shaped thickened welding layer is formed in the welding area of ​​the thin composite material. The increased thickness improves the bonding strength of the welding interface, makes welding operations easier, and improves the weld strength and sealing effect.

[0056] By only thickening the welding area locally, the overall material usage increases by only 2-3%, which greatly saves material costs compared to the full thickening solution.

[0057] The tooling has a simple structure, low manufacturing cost, long service life, and significantly reduced overall production cost.

[0058] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An ultrasonic welding tool for exchanging resin, characterized by comprising: include: A base for mounting the component to be welded, wherein the component to be welded includes a base layer, a ion exchange resin to be coated, and a coating layer. A screw cap is used to spin-press the bottom liner, which includes a PET mesh and PP filter cotton covering the PET mesh; The base has a first base and a second base arranged concentrically. The first base has a circular groove in the center for accommodating the ion exchange resin. The second base is arranged around the first base to form an annular platform for positioning the bottom liner. The cap has a ring-shaped structure with a central through hole. The inner wall of the cap is provided with pressure teeth. The cap and the base form a rotating pair. Through rotational engagement, the pressure teeth fully contact the welding surface of the bottom liner and generate a squeezing effect, which drives the PP filter cotton and PET mesh to rotate and form a spiral pattern, forming an annular thickened welding layer.

2. The exchange resin ultrasonic welding tooling of claim 1, wherein, The thickness of the annular thickened weld layer is 1.5-2.4 mm.

3. The crosslinked resin ultrasonic welding tooling of claim 1, wherein, The inner diameter of the central ring of the screw cap is slightly larger than the outer diameter of the first chassis, and the outer diameter of the screw cap is adapted to the outer diameter of the second chassis.

4. The exchange resin ultrasonic welding tooling of claim 1, wherein, The bottom of the circular groove of the first chassis is provided with a vent hole.

5. The ultrasonic welding fixture for ion exchange resin according to claim 1, characterized in that, The first chassis has an annular boss on its edge, and the surface of the annular boss has anti-slip serrations.

6. The ultrasonic welding fixture for ion exchange resin according to claim 1, characterized in that, The tooth profile of the pressure tooth includes a working inclined surface that directly corresponds to the welding surface of the underlayer.

7. The ultrasonic welding fixture for ion exchange resin according to claim 1, characterized in that, It also includes a positioning block, the bottom surface of which may be provided with a rubber buffer layer.

8. The ultrasonic welding fixture for ion exchange resin according to claim 7, characterized in that, The cap and positioning block are made of polycarbonate plastic.

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