Printed fabric lossless positioning friction roller and roller surface positioning needle

Abstract

The utility model relates to a printed fabric lossless positioning friction roller and a roller surface positioning needle, each positioning needle comprises an extension section, a bending section and a tip end which are connected end to end, a plurality of positioning needles are arranged in an array on a specified surface to form a needle surface with a friction limiting function, and the needle surface has lossless grasping force on the surface of a textile fabric. Each friction roller is provided with a needle face, the multiple friction rollers rotate in the same direction, a friction face with strong grasping force is formed by means of a large number of bent positioning needles, and the device can be suitable for various products such as seamless fabric, seamed fabric and silky elastic fabric.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a non-destructive positioning friction roller for printed fabrics and a roller surface positioning pin. Background Technology

[0002] Printing on seamless fabrics has always been a challenge in the industry. Because seamless fabrics have no seams, it is difficult to find positioning points. Therefore, when loading and positioning seamless fabrics, it is difficult to find the starting and ending points of printing, resulting in difficulties in printing positioning and a high defect rate in printed products.

[0003] Currently, to address these issues, the industry offers rollers with slightly rougher surfaces to increase frictional resistance with the fabric. However, these rough-surfaced rollers still present positioning challenges for seamless fabrics due to the absence of seams. Especially when printing on smoother fabrics, the frictional resistance provided by the rough surface is limited, and localized slippage can still occur. Utility Model Content

[0004] To address the shortcomings of existing production technologies, the applicant provides a structurally sound, non-destructive positioning friction roller for printed fabrics and roller surface positioning pins. This roller provides a highly reliable gripping force on the fabric without damaging it due to excessive gripping force. Furthermore, the roller surface composed of these positioning pins can be effectively packaged and prevented from interlocking between adjacent rollers by simply wrapping it with a single layer of thin material.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A non-destructive positioning needle for printed fabric includes an extension section, a bent section, and a tip connected end to end. Multiple positioning needles are arrayed on a designated surface to form a needle surface with a friction limiting function. The needle surface has a non-destructive gripping force on the surface of the textile fabric.

[0007] As a further improvement to the above technical solution:

[0008] The extension section is set perpendicular to the designated surface where the positioning pin is located.

[0009] When the specified surface is a curved surface, the extension segment is perpendicular to the tangent of that curved surface.

[0010] The angle between the bent section and the extension section is set such that the bent sections and tips of all positioning pins are located in the same plane.

[0011] The bent section and the tip form a friction surface, and the friction surface and the designated surface where the positioning pin is located are offset surfaces.

[0012] The tip has at least one wedge-shaped surface, and the side of the tip away from the designated surface extends obliquely toward the designated surface.

[0013] A positioning friction roller with non-destructive positioning pins for printed fabric, wherein the positioning pins are arranged in a circumferential array on the roller surface, and adjacent rings of positioning pins are staggered.

[0014] As a further improvement to the above technical solution:

[0015] The bent section and tip of the positioning pin form a friction surface, which is coaxial with the roller surface.

[0016] Multiple positioning friction rollers are used in combination, and the positioning pin tips of all positioning friction rollers have the same orientation and direction.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention provides a novel friction surface that utilizes numerous bent positioning pins to form a friction surface with strong gripping force, applicable to a variety of products such as seamless fabrics, sewn fabrics, and silky elastic fabrics.

[0019] The needle tip of this invention primarily uses a bent section with a pointed tip to contact the fabric. The needle tip will not penetrate the fabric, nor will it pierce the coils or interwoven fibers of the fabric. Therefore, it will not tear the fabric or cause damage to the fabric during transmission.

[0020] Since the needle tips are all bent towards the same side, the maximum gripping force is at the side circumference of the friction roller when the needle surface formed by the needle tips rotates. When the roller continues to rotate, the needle tips no longer contact the fabric and automatically release the fabric, which effectively limits the movement, prevents damage to the fabric, and ensures absolute synchronous transmission between the fabric and the friction roller. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the single positioning pin structure used in this utility model.

[0022] Figure 2 This is a schematic diagram showing the positioning pins of this utility model arranged in an alternating pattern on a designated surface.

[0023] Figure 3 This is a schematic diagram of the positioning pins of this utility model installed on the friction roller. To prevent the image from being too dense and unclear, only a portion of the positioning pins are shown in the figure.

[0024] Figure 4 This is a schematic diagram of the positioning pins and friction rollers of this utility model installed on a printing machine. To prevent the image from being too dense and unclear, only part of the positioning pins is shown in the figure.

[0025] Among them: 1. Extension section; 2. Bending section; 3. Tip; 4. Friction roller. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] like Figures 1-4 As shown, the non-destructive positioning needle for printed fabric in this embodiment includes an extension section 1, a bent section 2, and a tip 3 connected end to end. Multiple positioning needles are arranged in an array on a designated surface to form a needle surface with a friction limiting function. The needle surface has a non-destructive gripping force on the surface of the textile fabric.

[0028] Extension 1 is set perpendicular to the designated surface where the positioning pin is located.

[0029] When the specified surface is a curved surface, extension segment 1 is perpendicular to the tangent of that curved surface.

[0030] The angle between the bent section 2 and the extension section 1 is set such that the bent sections 2 and the tips 3 of all positioning pins are located in the same plane.

[0031] The bent section 2 and the tip 3 form a friction surface, and the friction surface and the designated surface where the positioning pin is located are offset surfaces.

[0032] The tip 3 has at least one wedge-shaped surface, and the side of the tip 3 facing away from the designated surface extends obliquely toward the designated surface.

[0033] In this embodiment, the positioning friction roller 4 with non-destructive positioning pins for printed fabric has a circumferential array of positioning pins on the roller surface, with adjacent rings of positioning pins staggered.

[0034] The bent section 2 and the tip 3 of the positioning pin form a friction surface, and the friction surface and the roller surface are coaxial circumferential surfaces.

[0035] Multiple positioning friction rollers 4 are used in combination, and the positioning pin tips 3 of all positioning friction rollers 4 have the same orientation and direction.

[0036] The roller surface protective layer in this embodiment is a single-layer structure, adapted to wrap and position the friction roller 4.

[0037] The specific structure and working principle of this utility model are as follows:

[0038] Take seamless underwear as an example. It is shaped like a tube and has no seams. Usually, seams can be used as positioning references during the printing and dyeing process, but seamless fabrics are difficult to position, making it difficult to accurately print patterns on the fabric surface.

[0039] like Figure 2 and Figure 3 As shown, this invention adds a friction surface to the surface of the positioning roller. The friction surface is formed by an array of many bent positioning pins. The biggest advantage of this friction surface is that it can provide reliable gripping force without damaging the fabric.

[0040] In particular, compared to traditional friction surfaces, such as Velcro, which has a similar needle-face friction surface structure to the present invention, although Velcro has a limiting force, it also causes great damage to the fabric. Therefore, limiting the fabric without damaging it is the most important technical point of the present invention.

[0041] The positioning pins on the surface of friction roller 4 have a large coverage area, basically covering the entire outer surface of friction roller 4. It is required that the entire surface of the fabric is covered by the needle friction surface during synchronous transmission to ensure that the tension of each section of the fabric is the same, and that the beginning or end of the fabric will not be slightly loose due to not being tensioned by the needle surface, thus affecting the printing effect.

[0042] like Figure 2 and Figure 3 As shown, the positioning pins can be viewed as several rings, with adjacent rings of positioning pins alternating. Each positioning pin has the same structure, as shown below. Figure 1 As shown, it includes an extension section 1 extending radially from the surface of the positioning roller, a bent section 2 located at the top of the extension section 1, and a tip 3 located at the end of the bent section 2 opposite to the extension section 1.

[0043] All the bent sections 2 tend to bend tangentially towards the positioning roller, and the angle between the extension section 1 and the bent section 2 ranges from 88° to 93°, preferably slightly larger than a right angle, such as 92°, in order to provide an outward gripping force. Because of the large number of positioning pins and their close arrangement, the pin tips do not damage the fabric or skin when contacting a relatively large area. However, since the fabric is also a rough surface, it is still sufficiently gripped.

[0044] The needle tip has a wedge-shaped structure with at least two wedge surfaces. The side facing the positioning roller is on the same smooth curve as the bent section 2. The top wedge surface slopes downwards towards the positioning roller, which helps to grip the elastic fabric while reducing the probability of the needle tip piercing the fabric. When the needle tip does not pierce the fabric or only partially pierces the textile loops, it will not cause tearing damage to the fabric.

[0045] Based on the aforementioned characteristics of not easily damaging external objects, when storing or stacking these positioning rollers, simply wrapping them with a layer of paper or a relatively smooth material is sufficient to isolate adjacent positioning rollers and prevent the needle tips from catching and deforming between them. This makes storage very convenient.

[0046] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A non-destructive positioning needle for printed fabrics, characterized in that: It includes an extension section (1) connecting the beginning and end, a bent section (2), and a tip (3). Multiple positioning pins are arrayed on a designated surface to form a pin surface with friction limiting function. The pin surface has a non-destructive gripping force on the textile fabric surface.

2. The non-destructive positioning needle for printed fabrics as described in claim 1, characterized in that: The extension section (1) is set perpendicular to the designated surface where the positioning pin is located.

3. The non-destructive positioning needle for printed fabrics as described in claim 2, characterized in that: When the specified surface is a curved surface, the extension segment (1) is perpendicular to the tangent of the curved surface.

4. The non-destructive positioning needle for printed fabrics as described in claim 1, characterized in that: The angle between the bent section (2) and the extension section (1) is set, and the bent sections (2) and tips (3) of all positioning pins are located in the same plane.

5. The non-destructive positioning needle for printed fabrics as described in claim 4, characterized in that: The bent section (2) and the tip (3) form a friction surface, and the friction surface and the designated surface where the positioning pin is located are offset surfaces.

6. The non-destructive positioning needle for printed fabrics as described in claim 1, characterized in that: The tip (3) has at least one wedge-shaped surface, and the tip (3) extends obliquely toward the designated surface from the side opposite to the designated surface.

7. A positioning friction roller (4) with a non-destructive positioning pin for printed fabric as described in claim 1, characterized in that: The positioning pins are arranged in a circumferential array on the roller surface, with adjacent rings of positioning pins staggered.

8. The positioning friction roller (4) as described in claim 7, characterized in that: The bent section (2) and tip (3) of the positioning pin form a friction surface, and the friction surface and the roller surface are coaxial circumferential surfaces.

9. The positioning friction roller (4) as described in claim 7, characterized in that: Multiple positioning friction rollers (4) are used in combination, and the positioning pin tips (3) of all positioning friction rollers (4) have the same orientation and direction.

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