One-way yarn warping jig

Abstract

According to the one-way yarn warping jig, the distance between yarn is effectively controlled through the guide grooves, and therefore errors are reduced. By utilizing different shapes of the guide grooves, yarn is prevented from being separated from the guide grooves to influence the quality of the screen cloth in the weaving process. The utility model relates to a one-way yarn warping jig which is provided with a jig body, the jig body is in a flat plate shape, and one face of the jig body is a guide groove face. The guide groove face is provided with a plurality of guide grooves, and the guide grooves penetrate through the two opposite ends of the guide groove face so that yarn can penetrate through the guide grooves. Contact surfaces and contact points of yarns are increased through the guide grooves, the limiting effect is improved, and the length of free swinging of the yarns in the weaving process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of printing screen production tools, in particular to a warping jig for unidirectional yarn screen plates. Background Art

[0002] Screen printing involves coating a photosensitive emulsion onto a mesh. After drying, exposure, development, and washing, the mesh forms a mask with a specific pattern. During printing, the pattern on the mesh masks specific areas, while the squeegee allows ink to penetrate through the gaps between the mesh and onto the target object.

[0003] As screen printing technology advances, single-warp yarn meshes have been developed to enable more precise pattern printing. Traditional meshes are woven using longitudinal warp yarns and transverse weft yarns. This creates undulations at the intersection of the warp and weft yarns, which can affect the thickness and quality of the printed pattern. Meshes woven using only unidirectional warp yarns effectively avoid these uneven defects at the intersection of the warp and weft yarns.

[0004] like Figure 1 As shown in the diagram of the weaving process of unidirectional yarn mesh, when conventional unidirectional yarn mesh is produced, the yarn is first fed longitudinally by leveling roller A, while adding yarn tension to facilitate subsequent processes. The warping reed B is then used to adjust the distance between different warp threads. Finally, the yarn is sent to the pressing roller C for the pressing step, which combines the yarn with the polymer material to increase strength.

[0005] However, although the unidirectional yarn weaving method can improve the printing effect, it is also difficult to control the spacing because the warp yarns of the unidirectional yarns lack the constraints of the weft yarns. During the weaving process, the warp yarns are easily affected by the lateral force. Although increasing the tension can improve the spacing stability, when weaving fine mesh fabrics, the spacing is millimeter-level (10 -3 m) or even micron level (10 -6 m), increasing the yarn tension has limited help on the spacing.

[0006] The inventor of the present invention has taken into account the difficulty in controlling the spacing between yarns during the production of existing unidirectional yarn mesh, resulting in large errors, and has actively and continuously developed a utility model that can improve the above problem. Utility Model Content

[0007] The main purpose of the utility model is to provide a unidirectional yarn warping jig which can effectively control the spacing between yarns through guide grooves, thereby reducing errors.

[0008] Another object of the present invention is to utilize different shapes of the guide grooves to prevent the yarns from escaping from the guide grooves during the weaving process and affecting the quality of the mesh.

[0009] The unidirectional yarn warping jig of the present invention comprises a jig body, which is flat and has a guide groove surface on one side. The guide groove surface is provided with a plurality of guide grooves, and the guide grooves pass through opposite ends of the guide groove surface for yarn to pass through.

[0010] In a preferred application of the present invention, after the yarns have passed through the warping reed and spacing reed, they are sequentially passed into corresponding guide grooves to adjust and control the spacing between the yarns. Specifically, the guide grooves can be pre-cut in the jig body based on the screen specifications, yarn diameter, or yarn cross-sectional shape.

[0011] In a preferred embodiment of the present invention, the guide grooves have a semicircular cross-section. When the yarn passes through the guide grooves, a portion of the yarn is exposed outside the guide grooves. The operator can move the jig body toward the side of the guide grooves that contacts the yarn, thereby reducing the possibility of the yarn escaping the guide grooves through yarn tension.

[0012] In a preferred embodiment of the present invention, the guide groove has a U-shaped cross-section, with the bottom of the guide groove being semicircular according to the yarn diameter, and then extending to the opening of the guide groove through a straight portion. Specifically, the yarn is entirely located in the guide groove, preventing the yarn from escaping the guide groove.

[0013] Preferably, the width of the straight portion of the U-shaped guide groove near the opening side of the guide groove is wider than that near the bottom side, so as to increase the ease of threading.

[0014] Preferably, the cross-sectional shape of the guide groove is U-shaped.

[0015] A preferred embodiment of the present invention is that the one-way yarn warping jig of the present invention also has a jig cover. When the yarn passes through the guide groove and the yarn is located in the guide groove as a whole, the opening of the guide groove can be covered by the jig cover to prevent the yarn from falling out of the groove.

[0016] Preferably, the fixture body is integrally formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the weaving of existing unidirectional yarn mesh fabric;

[0018] Figure 2 This is a schematic diagram of the fixture body according to an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 A cross-sectional view of the first embodiment of the utility model in the DD direction;

[0020] Figure 4 for Figure 2 A cross-sectional view of the second embodiment of the present invention in the DD direction;

[0021] Figure 5 for Figure 2 A cross-sectional view of the third embodiment of the present invention in the DD direction; and

[0022] Figure 6 for Figure 2 A cross-sectional view of the fourth embodiment of the present invention taken along the DD direction.

[0023] Description of Figure Numbers:

[0024] 1: Fixture body

[0025] 10: Guide groove surface

[0026] 11: Guide groove

[0027] 111: guide groove opening

[0028] 112: Bottom of guide groove

[0029] 2: Fixture upper cover

[0030] A: Leveling roller

[0031] B: Warping reed

[0032] C: Roller DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The accompanying drawings provide some, but not all, embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any progressive efforts are within the scope of protection of the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] Figures 2 to 6 Schematic diagram of an embodiment of the present utility model, as shown in FIG. Figure 2As shown in the schematic diagram of the jig body of an embodiment of the present invention, the unidirectional yarn warping jig of the present invention comprises a jig body 1. The jig body 1 is flat, one surface of which is a guide groove surface 10. The guide groove surface 10 is provided with a plurality of guide grooves 11, and these guide grooves 11 extend through opposite ends of the guide groove surface 10 to allow the yarn to pass through the jig body 1. Furthermore, the yarn can be lowered below the guide groove surface 10, so that the yarn is completely or partially located in the guide grooves 11.

[0036] In the preferred application, when multiple yarns pass through Figure 1 The conventional leveling roller A and warping reed B are sequentially inserted into corresponding guide slots 11 to precisely control the spacing between yarns. These guide slots 11 can be pre-cut in the jig body 1 based on the screen specifications, yarn diameter, or yarn cross-sectional shape.

[0037] Specifically, after passing through the warping reed B, the yarns are initially arranged at a set spacing. However, external forces such as mechanical vibration during the weaving process, wind, and static electricity between the yarns can cause the yarns to shake. Even after passing through the warping reed B, the spacing of the yarns may be affected by external forces, thereby increasing the spacing error and affecting the precision quality of the mesh. The jig body 1 is used to add a contact surface or multiple contact points to the yarns using the guide groove 11 before they enter the calendering roller C, thereby increasing the stability of the yarn spacing.

[0038] Furthermore, the jig body 1 reduces the length of free yarn swing between the warping reed B and the pressing roller C, improving the stability of the yarn during transportation. At the same time, the guide groove 11 provides multiple contact surfaces or points to enhance the ability to guide the yarn, thereby reducing the spacing error of the yarn after leaving the jig body 1.

[0039] like Figure 3 for Figure 2 As shown in the cross-sectional view of the first embodiment of the present invention in the DD direction, the cross-sectional shape of the guide groove 11 is semicircular. The operator can move the jig body 1 toward the guide groove surface 10 that contacts the yarn, and reduce the possibility of the yarn escaping from the guide groove 11 through the tension of the yarn. Specifically, when the yarn passes through the guide groove 11, part of it will be exposed outside the guide groove 11, and it is easier to detach from the guide groove 11 due to external force. The movement of the jig body 1 toward the guide groove surface 10 will lift the yarn and increase the tension of the yarn, so that the yarn fits more closely to the guide groove 11, and a greater external force is required to detach the yarn from the guide groove 11.

[0040] like Figure 4 for Figure 2As shown in the cross-sectional view of the second embodiment of the present invention taken along the DD direction, the guide groove 11 has a U-shaped cross-section. The guide groove 11 has a guide groove opening 111 formed on the guide groove surface 10 and a guide groove bottom 112 formed at the opposite end. The guide groove bottom 112 is formed in a semicircular shape or a shape corresponding to the yarn diameter, and then extends to the guide groove opening 111 through a straight portion.

[0041] Specifically, when in use, the entire yarn will be located in the guide groove 11, and the extra depth of the straight portion will prevent the yarn from escaping from the guide groove 11.

[0042] like Figure 5 for Figure 2 As shown in the cross-sectional view of the third embodiment of the present invention in the DD direction, the width of the straight portion of the guide groove 11 on the side close to the guide groove opening 111 is greater than the width on the side away from the guide groove opening 111, so that the yarn can be better placed in the guide groove 11 when threading.

[0043] like Figure 6 for Figure 2 As shown in the cross-sectional view of the fourth embodiment of the present invention in the DD direction, the guide groove 11 is in the shape of a ㄩ.

[0044] like Figure 6 As shown, the utility model is a unidirectional yarn warping jig and also has a jig cover 2. When the yarn passes through the guide groove 11 and the yarn is entirely located in the guide groove 11, the jig cover 2 can cover the guide groove opening 111 to prevent the yarn from falling out of the groove.

[0045] Preferably, the fixture body 1 is integrally formed.

[0046] The above-described embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the scope of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A unidirectional yarn warping jig, characterized in that: The jig body is flat and has a guide groove surface on one side. The guide groove surface is provided with a plurality of guide grooves, and the plurality of guide grooves pass through opposite ends of the guide groove surface. After the plurality of yarns pass through the warping reed and the spacing reed, each yarn passes through a corresponding guide groove to adjust the spacing between each yarn; The plurality of guide grooves are grooves of corresponding specifications opened in advance on the jig body according to the specifications of the screen and the diameters of the plurality of yarns, so as to control the spacing between the plurality of yarns.

2. The unidirectional yarn warping jig according to claim 1, characterized in that: The cross sections of the plurality of guide grooves are semicircular.

3. The unidirectional yarn warping jig according to claim 1, characterized in that: The cross sections of the plurality of guide grooves are U-shaped.

4. The unidirectional yarn warping jig according to claim 3, characterized in that: The multiple guide grooves form guide groove openings on the guide groove surface and form guide groove bottoms at the other end. The width of the guide groove openings is greater than the width of the guide groove bottoms to facilitate the insertion of the multiple yarns.

5. The unidirectional yarn warping jig according to claim 1, characterized in that: The cross-section of the plurality of guide grooves is in a U-shape.

6. The unidirectional yarn warping jig according to any one of claims 3 to 5, characterized in that: The utility model also has a jig upper cover. When the plurality of yarns are completely placed in the guide groove, the jig upper cover covers the opening of the guide groove to prevent the plurality of yarns from falling out of the groove.

7. The unidirectional yarn warping jig according to claim 2, characterized in that: The fixture body is integrally formed.

8. The unidirectional yarn warping jig according to claim 6, characterized in that: The fixture body is integrally formed.

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