Weft yarn pressing and cutting mechanism of jacquard weft knitting machine

Abstract

The utility model relates to the technical field of weft yarn pressing and cutting, and discloses a weft yarn pressing and cutting mechanism of a jacquard weft knitting machine, which comprises a main body, guide frames are fixedly mounted at two ends of the main body, joints are embedded into the outer surfaces of the guide frames, and a plurality of through grooves are formed in the main body; the top frame is fixedly installed on the outer surface of the top end of the main body, a pressing rod assembly is arranged in the top frame, and the yarn is pressed through the pressing rod assembly; and the cutting frame is fixedly installed on the outer surface of one side of the guide frame, and a plurality of through holes are formed in the outer surface of the cutting frame. The guide frames are arranged at the two ends of the main body, the connectors are embedded into the guide frames, yarn can be guided and conveyed conveniently, the pressing rods are controlled to move up and down through the electromagnets, the yarn is pressed and fixed through the pressing rods during cutting, it is avoided that the yarn jumps up in the cutting process, and after cutting is completed, the pressing rods are lifted upwards, the yarn is loosened, and the yarn can be pulled and conveyed continuously and conveniently.

Description

Technical Field

[0001] This utility model relates to the field of weft yarn pressing and cutting technology, specifically a weft yarn pressing and cutting mechanism for a jacquard weft knitting machine. Background Technology

[0002] The weft yarn pressing and cutting mechanism of a jacquard weft knitting machine is a key link in weft knitting production. It is mainly used to control the supply and cutting of weft yarn during the knitting process to ensure the accuracy and continuity of fabric formation.

[0003] For example, Chinese patent CN211734658U discloses a warp knitting machine with a weft cutting mechanism. A cutting assembly is installed at the bottom of the protective cover. Two electric push rods are respectively installed at both ends of a mounting frame. Movable rods are evenly and movably installed at both ends of the mounting frame. A first spring is movably sleeved in the middle of the connecting rod. A pressure rod groove is opened in the middle of the side of the movable rod. Second springs are evenly distributed inside the pressure rod groove on the side of the pressure rod. A guiding tensioning assembly is installed at the top of the protective cover. An infeed roller is installed on the side of the top of the protective cover near the inlet. Cylinders are fixedly installed at both ends of the top surface of the protective cover. A tensioning roller is installed inside the roller frame. When the movable rod contacts the pad at its end, it enters the pressure rod groove, squeezing the weft yarn and fixing it in place. As the mounting frame continues to move, the first spring contracts, and the cutter approaches the weft yarn to cut it, completing the cutting process without causing the weft yarn to twist. The cutting effect is good. However, in traditional cutting mechanisms, the tension of the yarn during the cutting process can cause the yarn to break apart at the moment of cutting, and several strands of yarn can easily become entangled, making it inconvenient for subsequent feeding and greatly reducing the working efficiency of the weft knitting machine. Therefore, a weft yarn pressing and cutting mechanism for jacquard weft knitting machines is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a weft yarn pressing and cutting mechanism for a jacquard weft knitting machine, which has the advantages of avoiding entanglement and solving the problem of entanglement in traditional yarn cutting.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned goal of avoiding tangling, this utility model provides the following technical solution: a weft yarn pressing and cutting mechanism for a jacquard weft knitting machine, comprising:

[0008] The main body has guide frames fixedly installed at both ends, and connectors are embedded in the outer surface of the guide frames. Several through slots are opened inside the main body.

[0009] The top frame is fixedly installed on the top outer surface of the main body. The top frame is equipped with a pressure rod assembly, which is used to press the yarn.

[0010] A cutting frame is fixedly installed on one side of the outer surface of the guide frame, and the outer surface of the cutting frame has several through holes.

[0011] Preferably, a base frame is fixedly installed on both sides of the bottom end of the main body, and mounting holes are opened at both ends of the outer surface of the base frame. The base frame is installed and fixed by passing fixing bolts through the mounting holes of the base frame.

[0012] Preferably, the pressure bar assembly includes an inner plate disposed inside the top frame. Several pressure bars are fixedly installed at the bottom end of the inner plate, and the bottom ends of the pressure bars are inserted into the through groove. When the electromagnet is turned off, the inner plate is pushed down along the guide rod by the return spring, so that the bottom ends of the pressure bars at the bottom of the inner wall press and fix the yarn in the through groove.

[0013] Preferably, an electromagnet is fixedly installed at the top of the inner wall of the top frame, and guide rods are fixedly installed at both ends of the inner side of the top frame. The two ends of the inner plate are sleeved on the outer surface of the guide rods. A return spring is sleeved on the outer surface of the guide rods above the inner plate. When the electromagnet is activated, the pressure rod is lifted upward to release the yarn, so as to facilitate the continued pulling and conveying of the yarn.

[0014] Preferably, the cutting frame has a blade inside, and the outer surface of the blade has a circular cutting hole, and the position of the circular cutting hole is corresponding to a through hole.

[0015] Preferably, a cylinder is fixedly installed at the top of the cutting frame, and a connecting plate is fixedly installed on the outer surface of one side of the top of the blade. One end of the output shaft of the cylinder is fixedly connected to the connecting plate. When the cylinder on the cutting frame is started, the blade is driven to slide inside the cutting frame, and the yarn at the through hole is cut through the circular cutting hole on the cutting frame.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a weft yarn pressing and cutting mechanism for a jacquard weft knitting machine, which has the following beneficial effects:

[0018] By setting guide frames at both ends of the main body, the connectors embedded in the guide frames facilitate the guidance and conveying of the yarn. The pressure rod is controlled up and down by an electromagnet. During cutting, the pressure rod presses and fixes the yarn to prevent it from jumping up during the cutting process. After cutting, the pressure rod is lifted up to release the yarn, making it easier to continue pulling and conveying the yarn. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial exploded cross-sectional view of the main body of this utility model;

[0021] Figure 3 This is a cross-sectional view of the cutting frame of this utility model.

[0022] In the diagram: 1. Main body; 11. Guide frame; 12. Joint; 13. Base frame; 14. Through groove; 2. Top frame; 21. Inner plate; 22. Pressure rod; 23. Electromagnet; 24. Guide rod; 25. Return spring; 3. Cutting frame; 31. Blade; 32. Circular cutting hole; 33. Connecting plate; 34. Cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 The present invention provides the following technical solution: a weft yarn pressing and cutting mechanism for a jacquard weft knitting machine, comprising a main body 1, guide frames 11 fixedly installed at both ends of the main body 1, a connector 12 embedded in the outer surface of the guide frame 11, a plurality of through grooves 14 opened inside the main body 1, and a base frame 13 fixedly installed on both sides of the bottom end of the main body 1, with mounting holes opened at both ends of the outer surface of the base frame 13, and the fixing bolts are installed and fixed by passing through the mounting holes of the base frame 13;

[0025] In this example, the top frame 2 is fixedly installed on the top outer surface of the main body 1. The top frame 2 is equipped with a pressure rod assembly, which is used to press the yarn. The pressure rod assembly includes an inner plate 21 inside the top frame 2. Several pressure rods 22 are fixedly installed at the bottom of the inner plate 21, and the bottom ends of the pressure rods 22 are inserted into the through groove 14. When the electromagnet 23 is turned off, the inner plate is pushed down along the guide rod 24 by the return spring 25, so that the bottom ends of the pressure rods 22 at the bottom of the inner wall press and fix the yarn in the through groove 14.

[0026] An electromagnet 23 is fixedly installed on the top of the inner wall of the top frame 2. Guide rods 24 are fixedly installed at both ends of the inner wall of the top frame 2. The two ends of the inner plate 21 are sleeved on the outer surface of the guide rods 24. A return spring 25 is sleeved on the outer surface of the guide rods 24 above the inner plate 21. When the electromagnet 23 is activated, the pressure rod 22 is lifted upward to loosen the yarn, so that the yarn can continue to be pulled and conveyed.

[0027] In this example, the cutting frame 3 is fixedly installed on one side of the outer surface of the guide frame 11. The outer surface of the cutting frame 3 has several through holes. The inside of the cutting frame 3 is provided with a blade 31. The outer surface of the blade 31 has a circular cutting hole 32, and the position of the circular cutting hole 32 corresponds to the through hole.

[0028] The top of the cutting frame 3 is fixedly equipped with a cylinder 34, and a connecting plate 33 is fixedly installed on the outer surface of one side of the top of the blade 31. One end of the output shaft of the cylinder 34 is fixedly connected to the connecting plate 33. When the cylinder 34 on the cutting frame 3 is started, the blade 31 is driven to slide inside the cutting frame 3, and the yarn at the through hole is cut through the circular cutting hole 32 on the cutting frame 3.

[0029] The working principle of this embodiment is as follows:

[0030] In use, the yarn is passed through the through groove 14 of the main body 1 and led out. The connector 12 embedded in the guide frame 11 facilitates the guidance and conveying of the yarn, allowing the yarn to pass through the through hole of the cutting frame. When the yarn needs to be cut, the electromagnet 23 is turned off, and the inner plate is pushed down along the guide rod 24 by the reset spring 25, so that the bottom end of the pressure rod 22 at the bottom of the inner wall presses and fixes the yarn in the through groove 14, preventing the yarn from jumping up during the cutting process.

[0031] Then, start the cylinder 34 on the cutting frame 3. The cylinder 34 will drive the blade 31 to slide inside the cutting frame 3. The yarn at the through hole will be cut through the circular cutting hole 32 on the cutting frame 3. After the cutting is completed, start the electromagnet 23 to lift the pressure rod 22 to release the yarn, so that the yarn can continue to be pulled and conveyed.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weft yarn pressing and cutting mechanism for a jacquard weft knitting machine, characterized in that, include: The main body (1) has guide frames (11) fixedly installed at both ends. The outer surface of the guide frame (11) is embedded with a connector (12). The interior of the main body (1) has several through grooves (14). The top frame (2) is fixedly installed on the top outer surface of the main body (1). The top frame (2) is provided with a pressure rod assembly, which is used to press the yarn. The cutting frame (3) is fixedly installed on one side of the outer surface of the guide frame (11), and the outer surface of the cutting frame (3) has several through holes.

2. The weft yarn pressing and cutting mechanism for a jacquard weft knitting machine according to claim 1, characterized in that: The bottom of the main body (1) is fixedly installed on both sides of the bottom end of the base frame (13), and the outer surface of the base frame (13) is provided with mounting holes at both ends.

3. The weft yarn pressing and cutting mechanism for a jacquard weft knitting machine according to claim 1, characterized in that: The pressure bar assembly includes an inner plate (21) disposed inside the top frame (2), and a number of pressure bars (22) are fixedly installed at the bottom end of the inner plate (21), and the bottom end of the pressure bars (22) is inserted into the through groove (14).

4. The weft yarn pressing and cutting mechanism for a jacquard weft knitting machine according to claim 3, characterized in that: An electromagnet (23) is fixedly installed on the top of the inner wall of the top frame (2). Guide rods (24) are fixedly installed at both ends of the inner wall of the top frame (2). The two ends of the inner plate (21) are sleeved on the outer surface of the guide rods (24). A return spring (25) is sleeved on the outer surface of the guide rods (24) above the inner plate (21).

5. The weft yarn pressing and cutting mechanism for a jacquard weft knitting machine according to claim 1, characterized in that: The cutting frame (3) is equipped with a blade (31) inside. The outer surface of the blade (31) is provided with a circular cutting hole (32), and there is a corresponding through hole at the position of the circular cutting hole (32).

6. The weft yarn pressing and cutting mechanism for a jacquard weft knitting machine according to claim 5, characterized in that: A cylinder (34) is fixedly installed at the top of the cutting frame (3), and a connecting plate (33) is fixedly installed on the outer surface of one side of the top of the blade (31), and one end of the output shaft of the cylinder (34) is fixedly connected to the connecting plate (33).

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