A thread-cutting mechanism and flat knitting machine with negative pressure suction function

Abstract

This utility model discloses a thread-cutting mechanism and a flat knitting machine with negative pressure suction function. It includes two needle plates, a thread-cutting mechanism, and a suction pipe. The two needle plates are arranged at an angle, with a gap between their upper edges. The thread-cutting mechanism is mounted on the needle plates. The suction pipe is installed on the lower side of the two needle plates and has an air inlet and a suction outlet. The air inlet is located at the gap and faces upwards, opposite to the position of the thread-cutting mechanism. The suction outlet is used to connect to a negative pressure source. This utility model, by setting the suction pipe with its air inlet facing upwards and aligned with the thread-cutting mechanism, and its suction outlet connected to the negative pressure source, can generate negative pressure suction at the air inlet. Through the negative pressure, the cut thread ends can be sucked up, and impurities such as thread ends can be collected, preventing them from scattering onto the equipment and fabric surface, thus keeping the equipment clean.

Description

Technical Field

[0001] This utility model relates to flat knitting machine equipment, and more specifically, to a thread-cutting mechanism with negative pressure suction function, and also to a flat knitting machine having the thread-cutting mechanism. Background Technology

[0002] Flat knitting machines, such as glove machines, require yarn changing and repositioning during the knitting process. When changing yarn or repositioning, the yarn that has just finished knitting needs to be clamped. After the yarn rejoins the knitting process, it is cut between the yarn clamping point and the newly knitted loop.

[0003] Chinese utility model patent with publication number CN 222412118 U discloses a glove machine thread cutting mechanism and a movable hook knife. By installing the thread cutting mechanism on the needle plate, the yarn can be cut, making it convenient to change the yarn and change its position.

[0004] However, in the above technical solution, after the yarn is cut, broken thread residue will be formed at the yarn cutting mechanism. The broken thread ends will be scattered near the yarn cutting mechanism, affecting the cleanliness of the equipment and the surface of the woven fabric. Long-term accumulation may even cause the equipment to malfunction and require shutdown for cleaning.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a wire cutting mechanism and a flat knitting machine with negative pressure suction function.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A thread-cutting mechanism with negative pressure suction function includes two needle plates, a thread-cutting mechanism, and a suction pipe. The two needle plates are inclined and a gap is formed between their upper edges. The thread-cutting mechanism is mounted on the needle plates. The suction pipe is mounted on the lower side of the two needle plates and has an air inlet and a suction outlet. The air inlet is located at the gap and faces upward, opposite to the position of the thread-cutting mechanism. The suction outlet is used to connect to a negative pressure source.

[0009] The present invention is further configured such that the thickness of the suction port is adapted to the width of the gap.

[0010] The present invention is further configured such that the suction port is connected to an extension tube, a portion of which is located on the lower side of the gap and is arranged laterally along the direction of the gap.

[0011] The present invention is further configured such that the suction port is opened in the horizontal direction.

[0012] The present invention is further configured such that the end of the extension tube extends to the outside of the needle plate.

[0013] The present invention is further configured such that the thread-cutting mechanism is provided in two sets, which are respectively installed on two needle plates.

[0014] The present invention is further configured such that the negative pressure source is a negative pressure fan and is equipped with a filter screen.

[0015] This utility model also provides a flat knitting machine, including the thread cutting mechanism with negative pressure suction function as described above.

[0016] In summary, this utility model has the following beneficial effects:

[0017] By setting up a suction pipe with its suction port facing upwards and aligned with the thread cutting mechanism, and connecting the suction port of the suction pipe to a negative pressure source, negative pressure suction can be generated at the suction port. Through the negative pressure, the cut thread ends can be sucked up, and the thread ends and other impurities can be gathered together, preventing the thread ends and impurities from scattering onto the surface of the equipment and fabric, thus keeping the equipment clean. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a flat knitting machine in this embodiment;

[0019] Figure 2 for Figure 1 The enlarged view at point A in the middle is used to show the three-dimensional structure of a wire-cutting mechanism with negative pressure suction function in this embodiment;

[0020] Figure 3 This is a perspective view of the suction pipe and extension pipe in this embodiment;

[0021] Figure 4 This is a cross-sectional view of a flat knitting machine in this embodiment;

[0022] Figure 5 for Figure 4 The enlarged view at point B in the middle shows the cross-sectional structure of a wire-cutting mechanism with negative pressure suction function in this embodiment.

[0023] Reference numerals: needle plate 1; upper edge 11; thread cutting mechanism 2; gap 3; suction pipe 4; suction port 401; suction port 402; extension pipe 5. Detailed Implementation

[0024] 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.

[0025] This embodiment discloses a wire-cutting mechanism with negative pressure suction function, referring to... Figure 1 , Figure 2 As shown, it includes two needle plates 1, a thread-cutting mechanism 2, and a suction pipe 4. The two needle plates 1 are arranged at an angle. A gap 3 is formed between the upper edges 11 of the two needle plates 1, and the gap 3 is arranged in the horizontal direction.

[0026] The thread-cutting mechanism 2 is mounted on the needle plate 1. There are two sets of the thread-cutting mechanism 2, which are respectively mounted on the two needle plates 1. The thread-cutting mechanism 2 can cut off the thread ends generated during the fabric processing.

[0027] The suction pipe 4 is installed on the lower side of the two needle plates 1. The suction pipe 4 has a suction port 401 and a suction port 402. The suction port 402 is connected to an external negative pressure source and can generate negative pressure in the suction pipe 4 during operation. The suction port 401 is located at the gap 3 and is positioned upwards opposite to the position of the wire cutting mechanism 2.

[0028] After the wire is cut, the broken wire will fall off. A negative pressure will be formed in the suction port 402 to suck up the fallen wire, preventing the wire from accumulating in the vicinity and ensuring the normal operation of the wire cutting mechanism and the entire equipment.

[0029] In this embodiment, the negative pressure source is a negative pressure fan (not shown in the figure). The negative pressure fan and the suction port 402 of the suction pipe 4 are connected by a pipe, and a filter screen is installed in the pipe. The filter screen can block impurities such as wire ends from the negative pressure suction, preventing them from directly entering the negative pressure fan and causing damage to the fan.

[0030] Reference Figure 2 , Figure 3 As shown, the thickness of the suction port 402 is adapted to the width of the gap 3. The suction port 402 has a narrow and long structure, and it can cover the entire area where the wire cutting mechanism 2 is located along the gap 3. When the wire cutting mechanism 2 is working, the cut wire ends can be sucked in by negative pressure as much as possible to avoid leaving broken wire residue.

[0031] Reference Figures 3-5As shown, the suction port 402 is connected to an extension tube 5. Part of the extension tube 5 is located on the lower side of the gap 3 and is arranged laterally along the direction of the gap 3. In order to connect the extension tube 5 to the negative pressure source, the end of the extension tube 5 extends to the outside of the needle plate 1, thereby facilitating connection with the external negative pressure source.

[0032] As for the suction pipe 4, the suction port 402 of the suction pipe 4 is opened in the horizontal direction, which can be connected to the horizontally arranged extension pipe 5 to form an air guide channel. In addition, both the suction port 402 and the extension pipe 5 are circular in structure, which facilitates the connection and assembly of the two.

[0033] This embodiment also discloses a flat knitting machine, including a thread-cutting mechanism with negative pressure suction function as described in the above embodiment. Through negative pressure, the cut thread ends can be sucked up and impurities such as thread ends can be gathered to prevent them from falling onto the surface of the equipment and fabric, thus keeping the equipment clean.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A thread trimming mechanism having a negative pressure suction function, characterized by, It includes two needle plates (1), a thread cutting mechanism (2) and a suction pipe (4). The two needle plates (1) are set at an angle, and a gap (3) is formed between the upper edges (11) of the two needle plates (1). The thread cutting mechanism (2) is installed on the needle plates (1). The suction pipe (4) is installed on the lower side of the two needle plates (1). The suction pipe (4) has a suction port (401) and a suction port (402). The suction port (401) is located at the gap (3) and is positioned upwards opposite to the position of the wire cutting mechanism (2). The suction port (402) is used to connect to a negative pressure source.

2. The thread trimming mechanism having a negative pressure suction function according to claim 1, characterized in that, The thickness of the suction port (402) is adapted to the width of the gap (3).

3. The thread trimming mechanism having a negative pressure suction function according to claim 1, wherein, The suction port (402) is connected to an extension tube (5), part of which is located on the lower side of the gap (3) and is arranged laterally along the direction of the gap (3).

4. The thread trimming mechanism having a negative pressure suction function according to claim 3, wherein, The suction port (402) is opened in the horizontal direction.

5. The wire-cutting mechanism with negative pressure suction function according to claim 3, characterized in that, The end of the extension tube (5) extends to the outside of the needle plate (1).

6. The thread trimming mechanism having a negative pressure suction function according to claim 1, wherein, The thread-cutting mechanism (2) has two sets, which are respectively installed on two needle plates (1).

7. The thread trimming mechanism having a negative pressure suction function according to claim 1, wherein, The negative pressure source is a negative pressure fan, which is equipped with a filter.

8. A flat knitting machine characterized in that, Includes the wire cutting mechanism with negative pressure suction function as described in any one of claims 1-7.

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