A full-width weft insertion mechanism for Raschel warp knitting machine

Abstract

The present invention discloses a full-width weft insertion mechanism for a Raschel warp knitting machine, comprising a frame, a ground comb cradle arranged on the frame; a laying mechanism is movably installed on the ground comb cradle, and the laying mechanism comprises a guide rail, a slider slidably matched with the guide rail, and a yarn guide tube linked with the slider; the slider slides back and forth on the guide rail so that the yarn guide tube guides the yarn to lay the weft insertion yarn in the reciprocating motion; at the same time, a sinking swing arm and a latch needle installed on a needle bed bracket are also provided on the frame; a weft push sinker is provided on the sinking swing arm, and the weft push sinker is linked with the sinking swing arm so that the weft push sinker pushes the laid yarn to the needle back of the latch needle. Through the above scheme, the device enables the double needle bed warp knitting machine to weave a space-spaced fabric with a biaxial base fabric structure, and at the same time, compared with the existing storage-type full-width weft insertion double needle bed warp knitting machine, the convenience of equipment adjustment and operation is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of warp knitting machines, in particular to a full-width weft insertion mechanism for a Raschel warp knitting machine. Background Art

[0002] At present, single needle bed warp knitting machines all use yarn storage type multi-head full-width weft insertion mechanism, which has the characteristics of high weft insertion efficiency and fast machine knitting speed. However, in the field of double needle bed warp knitting machines, due to the structural factors of the machine, the yarn storage type full-width weft insertion mechanism that has been maturely used in single needle bed warp knitting machines is greatly restricted for double needle beds.

[0003] Even though yarn storage full-width weft insertion double needle bed warp knitting machines have been produced abroad, their complex structure and the fact that the weft insertion yarns that have been laid out to be woven in during weaving occupy the entire front and rear working areas of the machine greatly increase the difficulty of adjusting and operating the machine, thus affecting the promotion and application of full-width weft insertion double needle bed warp knitting machines. Summary of the invention

[0004] The object of the present invention is to provide a full-width weft insertion mechanism for a Raschel warp knitting machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a full-width weft insertion mechanism for a Raschel warp knitting machine, comprising a frame, a ground comb cradle arranged on the frame, and a laying mechanism movably installed on the ground comb cradle; the laying mechanism comprises a guide rail, a slider slidably matched with the guide rail, and a yarn guide tube linked with the slider; the slider is reciprocated on the guide rail to enable the yarn guide tube to guide the yarn to lay the weft insertion yarn in the reciprocating motion; the frame is also provided with a sinker swing arm and a latch needle installed on a needle bed bracket; the sinker swing arm is provided with a weft pushing sinker, and the weft pushing sinker is linked with the sinker swing arm to enable the weft pushing sinker to push the laid yarn to the needle back of the latch needle.

[0006] As a preferred technical solution of the present invention: the slider is connected to a synchronous belt provided in the guide rail through a fixed block, so that the slider moves following the synchronous belt.

[0007] As a preferred technical solution of the present invention: a synchronous wheel is provided at one end of the guide rail, and a motor is provided at the other end of the guide rail; wherein one end of the synchronous belt is connected to the motor, and the other end of the synchronous belt is connected to the synchronous wheel.

[0008] As a preferred technical solution of the present invention: the sliding block is slidably matched with the guide rail via a roller.

[0009] As a preferred technical solution of the present invention: the guide rail is movably connected to the ground comb cradle through a comb hanger.

[0010] As a preferred technical solution of the present invention: the weft pushing sinker comprises a main body, and a first weft pushing piece and a second weft pushing piece are arranged on the main body.

[0011] As a preferred technical solution of the present invention: the length of the first weft pushing piece is greater than the length of the second weft pushing piece.

[0012] As a preferred technical solution of the present invention: a plurality of main body parts with the same structure are connected together side by side through a provided connecting part.

[0013] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: 1. The device completes the laying of the yarn by sliding back and forth through the laying mechanism, and at the same time, the weft pusher sinker pushes the laid yarn to the needle back of the latch needle, so that the double needle bed warp knitting machine can weave a spaced fabric with a biaxial base fabric structure;

[0014] 2. Through the above-mentioned method, the device greatly improves the convenience of equipment adjustment and operation compared with the existing yarn storage type full-width weft insertion double needle bed warp knitting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0017] Figure 3 It is a front view of the laying mechanism of the present invention;

[0018] Figure 4 It is a side view of the laying mechanism of the present invention;

[0019] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0020] Figure 6 It is a schematic diagram of the main structure of the weft pushing sinker of the present invention.

[0021] In the figure: 1. frame; 2. sinking swing arm; 3. laying mechanism; 30. motor; 31. yarn guide tube; 32. synchronous belt; 33. guide rail; 34. synchronous wheel; 35. comb hanger; 36. slider; 37. fixing block; 38. roller; 4. ground comb; 5. ground comb rocker; 6. wool yarn comb; 7. weft push sinker; 70. connecting part; 71. main part; 72. first weft push piece; 73. second weft push piece; 8. latch needle. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and cannot be understood as limiting the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] See also Figure 1-6 The present invention provides an embodiment: a full-width weft insertion mechanism for a Raschel warp knitting machine, comprising a frame 1, a ground comb cradle 5 arranged on the frame 1, and a laying mechanism 3 movably installed on the ground comb cradle 5; the laying mechanism 3 comprises a guide rail 33, a slider 36 slidably matched with the guide rail 33, and a yarn guide tube 31 linked with the slider 36; the slider 36 is reciprocated on the guide rail 33 to allow the yarn guide tube 31 to guide the yarn to lay the weft insertion yarn in the reciprocating motion; the frame 1 is also provided with a sinking swing arm 2 and a latch needle 8 installed on a needle bed bracket; the sinking swing arm 2 is provided with a weft pushing sinker 7, and the weft pushing sinker 7 is linked with the sinking swing arm 2 to allow the weft pushing sinker 7 to push the laid yarn to the needle back of the latch needle 8.

[0024] To sum up, the device completes the laying of the yarn through the back and forth sliding of the laying mechanism 3, and at the same time, the weft pushing sinker 7 pushes the laid yarn to the needle back of the latch needle 8, so that the double needle bed warp knitting machine can weave a spatial spacing fabric with a biaxial base fabric structure; at the same time, through the sliding of the laying mechanism 3 and the linkage of the weft pushing sinker 7 following the sinking swing arm 2, improvements are made on the basis of the original equipment, so that the device greatly improves the convenience of equipment adjustment and operation compared with the existing yarn storage type full-width weft insertion double needle bed warp knitting machine.

[0025] Among them, the slider 36 is connected to the synchronous belt 32 provided in the guide rail 33 through the fixed block 37, so that the slider 36 follows the movement of the synchronous belt 32, thereby making the slider 36 can reliably follow the movement of the synchronous belt 32, ensuring that the slider 36 drives the yarn guide tube 31 to reliably complete the laying of the yarn.

[0026] Furthermore, a synchronous wheel 34 is provided at one end of the guide rail 33, and a motor 30 is provided at the other end of the guide rail 33; wherein, one end of the synchronous belt 32 is connected to the motor 30, and the other end of the synchronous belt 32 is connected to the synchronous wheel 34. Through the above manner, the smooth movement of the slider 36 is further improved, wherein the motor 30 is preferably a servo motor, which, on the one hand, ensures the reliable movement of the slider 36, and on the other hand, facilitates the control of the moving position of the slider 36.

[0027] Furthermore, the slider 36 is slidably matched with the guide rail 33 via the roller 38 , thereby reducing the resistance of the slider 36 when it moves.

[0028] On the basis of the above scheme, since the guide rail 33 is movably connected to the ground comb cradle 5 through the provided comb hanger 35, it can be easily installed and removed like a common comb, and the laying mechanism 3 can be removed as a whole when the ground comb 4 needs to be threaded or adjusted, further making the device greatly improve the convenience of equipment adjustment and operation compared with the existing yarn storage type full-width weft insertion double needle bed warp knitting machine;

[0029] In addition, in order to further meet the requirements of the warp knitting machine, consistent with the existing warp knitting machine, for example, a ground comb 4 is also provided on the ground comb cradle 5, wherein the ground comb 4 is located above the laying mechanism 3, and a wool yarn comb 6 can also be installed on the frame 1.

[0030] Since the weft pushing sinker 7 includes a main body 71, and a first weft pushing piece 72 and a second weft pushing piece 73 are provided on the main body 71. Therefore, the second weft pushing piece 73 can prevent the yarn from slipping out of the weft pushing sinker 7 when the weft thread is pushed forward.

[0031] Furthermore, the length of the first weft pushing piece 72 is greater than the length of the second weft pushing piece 73. The longer first weft pushing piece 72 is used to press the coil during the weaving process to prevent the coil from surging and gathering, while the shorter second weft pushing piece 73 can further prevent the weft from slipping out from above the weft pushing sinker 7.

[0032] Furthermore, a plurality of main body parts 71 with the same structure are connected side by side through a connecting part 70. Therefore, a plurality of main body parts 71 can be connected together, further ensuring the pushing of the yarn; wherein, the main body part 71, the first weft pushing piece 72, and the second weft pushing piece 73 are an integrated thin sheet, and the connecting part 70 is a tin block that casts the plurality of main body parts 71 together.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A full-width weft insertion mechanism for a Raschel warp knitting machine, characterized in that: The invention comprises a frame (1), a ground comb cradle (5) arranged on the frame (1), and a laying mechanism (3) movably mounted on the ground comb cradle (5); the laying mechanism (3) comprises a guide rail (33), a slider (36) slidably matched with the guide rail (33), and a yarn guide tube (31) linked with the slider (36); the slider (36) slides back and forth on the guide rail (33) so that the yarn guide tube (31) guides the yarn in a reciprocating motion. The frame (1) is also provided with a sinking swing arm (2) and a latch needle (8) mounted on a needle bed bracket; the sinking swing arm (2) is provided with a weft push sinker (7), and the weft push sinker (7) is linked with the sinking swing arm (2) so that the weft push sinker (7) pushes the laid yarn to the needle back of the latch needle (8); the slider (36) is connected to the guide rail (33) by a fixed block (37) and a synchronous belt (33) provided in the guide rail (33). 2) is connected so that the slider (36) follows the movement of the synchronous belt (32); a synchronous wheel (34) is provided at one end of the guide rail (33), and a motor (30) is provided at the other end of the guide rail (33); wherein, one end of the synchronous belt (32) is connected to the motor (30), and the other end of the synchronous belt (32) is connected to the synchronous wheel (34); the slider (36) is slidably matched with the guide rail (33) through a roller (38); the guide rail (33) is movably connected to the ground comb cradle (5) through a comb hanger (35); the weft pushing sinker (7) includes a main body (71), and a first weft pushing plate (72) and a second weft pushing plate (73) are provided on the main body (71); the length of the first weft pushing plate (72) is greater than the length of the second weft pushing plate (73); a plurality of main bodies (71) with the same structure are connected side by side through a connecting portion (70).

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