Cloth supporting mechanism for drawing cloth surface of circular knitting machine and circular knitting machine with cloth supporting mechanism

Abstract

The invention provides a cloth supporting mechanism for drawing a cloth surface of a circular knitting machine and the circular knitting machine thereof.The cloth supporting mechanism comprises a circular cloth supporting ring, a stacked structural part and a plurality of oval cloth supporting rings, and the oval cloth supporting rings are sequentially arranged between the circular cloth supporting ring and the stacked structural part from top to bottom; the long radiuses and the short radiuses of the elliptical cloth supporting rings are gradually increased from top to bottom in sequence, and the circumferences of the elliptical cloth supporting rings are equal; yarns pass through the plurality of elliptical cloth supporting rings from the circular cloth cover from the circular cloth supporting ring until the laminated structural member forms a laminated shape. The method fully considers the characteristics of a circular structure, utilizes the perimeter characteristics of an elliptical geometric model, applies a multilayer elliptical structure stacking method, solves the problem that circular cloth passes through multiple times of elliptical structure guidance from a circle, and finally realizes complete linear stacking of the cloth.

Description

Technical Field

[0001] The present invention relates to the field of circular weft knitting machines, and particularly to a cloth supporting mechanism for pulling the cloth surface of a circular knitting machine and a circular knitting machine thereof. Background Art

[0002] In the textile circular knitting machine industry, a circular knitting machine is also called a circular weft knitting machine or a circular weft knitting circular machine. It feeds several yarns in the weft direction in sequence onto the knitting needles of the knitting machine through a knitting needle yarn feeding mechanism. The circular knitting machine bends the yarns into loops and interlaces them with each other to form a cylindrical knitted fabric.

[0003] Generally, when a circular weft knitting machine is in production, the yarns form a fabric after passing through the knitting components of the loom. After the fabric is formed in batches, it needs to be wound into a cylindrical or folded shape through a take-up mechanism. The fabric enters the cloth winding mechanism from the knitting area, is pulled by the rubber rollers of the cloth winding machine, and then the fabric is wound by a cloth winding rod.

[0004] Due to the special properties of the yarns, the surface tension requirements for the corresponding customized knitted fabrics are very high. Therefore, solving the uniform tension of the cloth surface during the production process of the circular knitting machine is an important indicator for measuring the machine performance. Since the needle bed of the circular weft knitting machine is cylindrical or disc-shaped, the fabric formed by it must be cylindrical.

[0005] However, there is no transition between the cylindrical shape of the fabric formed in the knitting area and the flat shape when it enters the rubber rollers of the cloth winding machine. Coupled with the pulling effect of the rubber rollers on the fabric, the fabric will form an irregular state during this process. In this way, the rolled cloth will wrinkle or the fabric will be uneven, and the style and quality of the fabric will be seriously affected. Generally, this problem can be solved by installing a cloth support frame between the knitting area and the cloth winding machine.

[0006] The traditional cloth supporting methods mainly include two types:

[0007] One is the combination of a telescopic straight pipe and a V-shaped cloth expanding method. This method has a simple structure and low cost. However, due to the existence of the telescopic straight pipe at the upper end, it is impossible to fully ensure uniform tension of the circular fabric, especially it is easy to appear local unevenness, thus causing the "water ripple" problem.

[0008] The other is an integrated cloth support frame that combines a rack and a gear and can expand and contract synchronously in four directions. This structure is convenient to operate and easy to ensure the unity of the machine. However, considering that it is an upgraded version of the first type, it cannot fundamentally solve the problem of uneven cloth surface tension and wrinkles.

[0009] In view of this, the inventor of the present application has designed a cloth supporting mechanism for pulling the cloth surface of a circular knitting machine and a circular knitting machine thereof, in order to overcome the above technical problems. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the defect that in the prior art, a fabric supporting frame is installed on a circular knitting machine, but the uneven fabric tension cannot be solved and wrinkles appear, and to provide a fabric supporting mechanism for pulling the fabric of a circular knitting machine and the circular knitting machine.

[0011] The present invention solves the above technical problem through the following technical solutions:

[0012] A fabric supporting mechanism for pulling the fabric of a circular knitting machine, characterized in that the fabric supporting mechanism includes a circular fabric supporting ring, a laminated structure member and a plurality of elliptical fabric supporting rings, and the elliptical fabric supporting rings are arranged in sequence from top to bottom between the circular fabric supporting ring and the laminated structure member;

[0013] The major radius and minor radius of the elliptical fabric supporting ring increase sequentially from top to bottom, and the circumferences of the plurality of elliptical fabric supporting rings are equal;

[0014] Yarn forms a laminated shape from a circular fabric surface through the circular fabric supporting ring, through a plurality of the elliptical fabric supporting rings, and until the laminated structure member.

[0015] According to an embodiment of the present invention, the circumference of the circular fabric supporting ring satisfies the formula: L1 = P i × D;

[0016] wherein, L1 represents the circumference of the circular fabric supporting ring, D represents the diameter of the tubular fabric, and P i represents the pi 3.1415.

[0017] According to an embodiment of the present invention, the circumference of the elliptical fabric supporting ring satisfies the formula: L2 = 2 × P i × b + 4(a - b);

[0018] wherein, L2 represents the circumference of the elliptical fabric supporting ring, b represents the minor radius of the elliptical fabric supporting ring, and a represents the major radius of the elliptical fabric supporting ring.

[0019] According to an embodiment of the present invention, the width of the laminated structure member satisfies the formula: w = L1 / 2;

[0020] wherein, w represents the width of the laminated structure member, and L1 represents the circumference of the circular fabric supporting ring.

[0021] According to an embodiment of the present invention, the circumference of the circular fabric supporting ring is equal to the circumference of the elliptical fabric supporting ring.

[0022] According to an embodiment of the present invention, the distance between the circular fabric supporting ring and the adjacent elliptical fabric supporting ring is equal to the distance between two adjacent elliptical fabric supporting rings.

[0023] According to an embodiment of the present invention, the major radii of the plurality of elliptical fabric supporting rings gradually increase from top to bottom, and the difference in major radii between any two adjacent elliptical fabric supporting rings is the same.

[0024] According to an embodiment of the present invention, the major radius of the elliptical fabric supporting ring satisfies the formula: a n = D / 2 + (P i - 2)×D×n / (4×(m + 1));

[0025] wherein, a n represents the major radius of the nth elliptical fabric supporting ring; D represents the diameter of the tubular fabric; m represents the number of elliptical fabric supporting rings; P i represents the pi 3.1415.

[0026] According to an embodiment of the present invention, the minor radius of the elliptical fabric supporting ring satisfies the formula: b n = (m + 1 - n)×D / (2×(m + 1));

[0027] wherein, b n represents the minor radius of the nth elliptical fabric supporting ring; D represents the diameter of the tubular fabric; m represents the number of elliptical fabric supporting rings.

[0028] The present invention also provides a circular knitting machine, characterized in that the circular knitting machine includes the fabric supporting mechanism for pulling the fabric surface of the circular knitting machine as described above.

[0029] The positive and progressive effects of the present invention are as follows:

[0030] The fabric supporting mechanism for pulling the fabric surface of the circular knitting machine and the circular knitting machine of the present invention fully consider the characteristics of the circular structure, utilize the perimeter characteristics of the elliptical geometric model, and apply the method of stacking multiple layers of elliptical structures to solve the problem that circular fabric is guided through multiple elliptical structures from circularity and finally realizes the complete linear stacking of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features, properties, and advantages of the present invention will become more apparent from the following description in conjunction with the drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0032] Figure 1 is a schematic structural diagram of the circular knitting machine of the present invention.

[0033] Figure 2 is a schematic structural diagram of the fabric supporting mechanism for pulling the fabric surface of the circular knitting machine of the present invention.

[0034] Figure 3 is an internal structural schematic diagram of the fabric supporting mechanism for pulling the fabric surface of the circular knitting machine of the present invention Figure 1 .

[0035] Figure 4 This is the front view of the cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to the present invention.

[0036] Figure 5 This is the side view of the cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to the present invention.

[0037] Figure 6 This is the top view of the cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to the present invention.

[0038] Figure 7 This is the schematic diagram of the circle in the cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to the present invention.

[0039] Figure 8 This is the schematic diagram of the elliptical cloth supporting ring in the cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to the present invention.

[0040]

Reference Signs

[0041] Cloth supporting mechanism 100

[0042] Yarn feeding assembly 200

[0043] Knitting assembly 300

[0044] Frame structure 400

[0045] Traction rubber roller 500

[0046] Yarn 600

[0047] Circular cloth 700

[0048] Circular cloth supporting ring 110

[0049] Laminated structural member 120

[0050] Elliptical cloth supporting ring 130

[0051] First elliptical cloth supporting ring 131

[0052] Second elliptical cloth supporting ring 132

[0053] Third elliptical cloth supporting ring 133

[0054] m-th elliptical cloth supporting ring 134 Detailed Embodiments

[0055] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is provided in conjunction with the accompanying drawings.

[0056] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to represent the same or like parts.

[0057] In addition, although the terms used in the present invention are selected from well-known and commonly used terms, some of the terms mentioned in the specification of the present invention may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of the description herein.

[0058] In addition, it is required to understand the present invention not only by the actual terms used, but also by the meaning implied by each term.

[0059] As Figure 1 shown, the present invention discloses a circular knitting machine, which includes a cloth supporting mechanism 100 for pulling the cloth surface of the circular knitting machine, a yarn feeding assembly 200, a knitting assembly 300, a frame structure 400, and a pulling rubber roller 500. The yarn feeding assembly 200 transports the yarn 600 to the knitting assembly 300. The knitting assembly 300 is installed on the frame structure 400, and the knitting assembly 300 weaves the yarn 600 into a circular fabric 700. The circular fabric 700 undergoes a shape transformation through the cloth supporting mechanism 100 and the pulling rubber roller 500.

[0060] More specifically, in a weft knitting circular machine, the raw yarn 600 stored in the creel structure is fed into the shuttles in the knitting assembly 300 respectively by the driving of the positive yarn feeder and the spandex yarn feeder in the yarn feeding assembly 200. Knitting is achieved by a specific knitting motion trajectory curve driven by gears and other transmissions, realizing the interlacing of the yarns 600 and weaving the yarns 600 into a circular fabric 700.

[0061] Under the pulling action of the pulling rubber roller 500 with a certain frictional force, the cylindrical circular fabric 700 undergoes a shape transformation through the cloth supporting mechanism 100, and finally forms a planar shape with a stacked shape, and then continues the subsequent process flow.

[0062] As Figures 2 to 8 shown, the present invention discloses a cloth supporting mechanism 100 for pulling the cloth surface of a circular knitting machine, which includes a circular cloth supporting ring 110, a stacked structural member 120, and a plurality of elliptical cloth supporting rings 130. The elliptical cloth supporting rings 130 are arranged in sequence from top to bottom between the circular cloth supporting ring 110 and the stacked structural member 120. The major radius and minor radius of the elliptical cloth supporting rings 130 increase sequentially from top to bottom, and the circumferences of the plurality of elliptical cloth supporting rings 130 are equal. The yarn 600 forms a stacked shape from the circular cloth surface through the circular cloth supporting ring 110, through the plurality of elliptical cloth supporting rings 130, and until the stacked structural member 120.

[0063] The cloth supporting mechanism 100 for stretching the cloth surface of a circular knitting machine according to the present application sets a multi-layer stack structure for the required cloth surface tension according to the geometric characteristics of the circle and ellipse shown in Figure 7 and Figure 8 to achieve balanced cloth surface tension.

[0064] Preferably, the perimeter of the circular cloth supporting ring satisfies the formula: L1 = P i × D (Formula 1).

[0065] Wherein, L1 represents the perimeter of the circular cloth supporting ring, D represents the diameter of the tubular cloth, and P i represents the pi 3.1415.

[0066] The perimeter of the elliptical cloth supporting ring satisfies the formula: L2 = 2 × P i × b + 4(a - b) (Formula 2).

[0067] Wherein, L2 represents the perimeter of the elliptical cloth supporting ring, b represents the minor radius of the elliptical cloth supporting ring, and a represents the major radius of the elliptical cloth supporting ring.

[0068] The width of the stacked structure member satisfies the formula: w = L1 / 2 (Formula 3).

[0069] Wherein, w represents the width of the stacked structure member, and L1 represents the perimeter of the circular cloth supporting ring.

[0070] Preferably, the perimeter of the circular cloth supporting ring 110 is equal to the perimeter of the elliptical cloth supporting ring 130.

[0071] More preferably, the spacing distance between the circular cloth supporting ring 110 and the adjacent elliptical cloth supporting ring 130 is equal to the spacing distance between two adjacent elliptical cloth supporting rings 130. The major radii of the multiple elliptical cloth supporting rings 130 gradually increase from top to bottom, and the difference in major radii between any two adjacent elliptical cloth supporting rings 130 is the same.

[0072] In order to ensure balanced tension of the cloth during the entire cloth supporting process, the present application considers designing the cloth supporting mechanism in a way that the perimeters are equal, i.e., L (L = L1 = L2).

[0073] As Figures 4 to 6 shown, the specific structure of the cloth supporting mechanism is set as follows: a circular cloth supporting ring 110 with a diameter of D is arranged at the uppermost end, and a single-rod structure (i.e., the stacked structure member 120) with a width of w is arranged at the lowermost end. Between the circular cloth supporting ring 110 and the stacked structure member 120, m elliptical cloth supporting rings 130 with different major and minor radii and equal perimeters are placed. Among them, the spacing distance d in the vertical direction of all the cloth supporting ring structures (the circular cloth supporting ring 110 and the elliptical cloth supporting rings 130) is the same. At the same time, the major radii of the elliptical cloth supporting rings 130 are arranged in increasing order from top to bottom (as Figure 3As shown in the figure, the order is circular cloth support ring 110, the first elliptical cloth support ring 131, the second elliptical cloth support ring 132, the third elliptical cloth support ring 133... the mth elliptical cloth support ring 134 and the laminated structure 120. At the same time, it is required that the difference in the length and width of any adjacent shapes is the same.

[0074] The major radius and minor radius of the circular cloth support ring are equal, that is, the radius, a0 = D / 2, b0 = D / 2. Among them, D is the diameter of the circular cloth support ring.

[0075] According to the above formulas 1, 2 and 3, the major radius a n and minor radius b n of the nth elliptical cloth support ring can be deduced.

[0076] The major radius of the elliptical cloth support ring satisfies the formula: a n = D / 2 + (P i - 2)×D×n / (4×(m + 1)).

[0077] Among them, a n represents the major radius of the nth elliptical cloth support ring; D represents the diameter of the tubular fabric; m represents the number of elliptical cloth support rings; P i represents the pi 3.1415.

[0078] The minor radius of the elliptical cloth support ring satisfies the formula: b n = (m + 1 - n)×D / (2×(m + 1));

[0079] Among them, b n represents the minor radius of the nth elliptical cloth support ring; D represents the diameter of the tubular fabric; m represents the number of elliptical cloth support rings.

[0080] For example, the first elliptical cloth support ring:

[0081] a1 = D / 2 + (P i - 2)×D / (4×(m + 1)), b1 = m×D / (2×(m + 1)).

[0082] The second elliptical cloth support ring:

[0083] a2 = D / 2 + (Pi - 2)×D×2 / (4×(m + 1)), b2 = (m - 1)×D / (2×(m + 1)).

[0084] The nth elliptical cloth support ring:

[0085] a n = D / 2 + (Pi - 2)×D×n / (4×(m + 1)), b n = (m + 1 - n)×D / (2×(m + 1)).

[0086] As shown Figures 3 to 6 in the figure, the cloth supporting mechanism of the present application enables the circular cloth surface to pass through multiple elliptical cloth supporting rings with gradually increasing major radii from the initial circular cloth supporting ring to the final stacked shape, ensuring uniform cloth surface tension throughout the transformation process without local relaxation or tightness problems.

[0087] The cloth supporting mechanism for pulling the cloth surface of a knitting circular machine in the present application adopts a multi-layer elliptical stack structure to achieve uniform cloth surface tension and effectively solve the problems of cloth surface wrinkles and fabric defects during the processing and production process.

[0088] In summary, the cloth supporting mechanism for pulling the cloth surface of a knitting circular machine and the knitting circular machine of the present invention fully consider the characteristics of the circular structure, utilize the perimeter characteristics of the elliptical geometric model, and apply the method of stacking multi-layer elliptical structures to solve the problem of guiding circular fabric through multiple elliptical structures and finally achieving complete linear stacking of the fabric.

[0089] For those skilled in the art, the above invention disclosure is only an example and does not constitute a limitation to the present application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to the present application. Such modifications, improvements, and corrections are proposed in the present application, so such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of the present application.

[0090] At the same time, the present application uses specific terms to describe the embodiments of the present application. Such as "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the present application can be appropriately combined.

[0091] Similarly, it should be noted that in order to simplify the description of the present application disclosure and thus help the understanding of one or more inventive embodiments, in the previous description of the embodiments of the present application, sometimes multiple features are merged into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the features required by the object of the present application are more than those mentioned in the claims. In fact, the features of the embodiment are less than all the features of the above-disclosed single embodiment.

[0092] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A cloth supporting mechanism for stretching the cloth surface of a circular knitting machine, characterized in that, The cloth supporting mechanism includes a circular cloth supporting ring, a laminated structure member, and a plurality of elliptical cloth supporting rings. The elliptical cloth supporting rings are arranged in sequence from top to bottom between the circular cloth supporting ring and the laminated structure member; The major radius and minor radius of the elliptical cloth supporting rings increase sequentially from top to bottom, and the circumferences of the plurality of elliptical cloth supporting rings are equal; The yarn forms a laminated shape from the circular cloth surface through the circular cloth supporting ring, passes through the plurality of elliptical cloth supporting rings, and reaches the laminated structure member.

2. The cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to claim 1, characterized in that, The circumference of the circular cloth support ring satisfies the formula: L1 = P i × D; Among them, L1 represents the circumference of the circular cloth support ring, D represents the diameter of the tubular cloth, and P i represents the pi 3.1415.

3. The cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to claim 1, characterized in that, The perimeter of the elliptical cloth support ring satisfies the formula: L2 = 2×P i ×b + 4(a - b); Among them, L2 represents the circumference of the elliptical cloth supporting ring, b represents the minor radius of the elliptical cloth supporting ring, and a represents the major radius of the elliptical cloth supporting ring.

4. The cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to claim 1, characterized in that, The width of the laminated structure member satisfies the formula: w = L1 / 2; Among them, w represents the width of the laminated structure member, and L1 represents the circumference of the circular cloth supporting ring.

5. The cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to claim 1, wherein, The circumference of the circular cloth supporting ring is equal to the circumference of the elliptical cloth supporting ring.

6. The cloth supporting mechanism for stretching the cloth surface of a circular knitting machine according to claim 1, wherein, The spacing distance between the circular cloth supporting ring and the adjacent elliptical cloth supporting ring is equal to the spacing distance between two adjacent elliptical cloth supporting rings.

7. The fabric supporting mechanism for stretching the fabric surface of a circular knitting machine according to claim 1, wherein The major radii of the plurality of elliptical cloth supporting rings gradually increase from top to bottom, and the difference in major radii between any two adjacent elliptical cloth supporting rings is the same.

8. The fabric supporting mechanism for stretching the fabric surface of a circular knitting machine according to claim 7, characterized in that, The major radius of the elliptical cloth support ring satisfies the formula: a n = D / 2 + (P i - 2) × D × n / (4 × (m + 1)); where a n represents the major radius of the nth elliptical fabric support ring; D represents the diameter of the tubular fabric; m represents the number of elliptical fabric support rings; P i represents the pi 3.1415.

9. The fabric supporting mechanism for stretching the fabric surface of a circular knitting machine according to claim 7, characterized in that, The short radius of the elliptical cloth support ring satisfies the formula: b n =(m + 1 - n)×D / (2×(m + 1)); Among them, b n represents the short radius of the nth elliptical fabric support ring; D represents the diameter of the tubular fabric; m represents the number of elliptical fabric support rings.

10. A circular knitting machine, characterized in that, The circular knitting machine includes a cloth supporting mechanism for pulling the cloth surface of the circular knitting machine according to any one of claims 1-9.

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