Needle plate thread suction structure of a looping machine and looping machine

Abstract

This utility model provides a needle plate thread suction structure for a bartacking machine and the bartacking machine itself, belonging to the technical field of bartacking machines. It solves the technical problem of how to stably suck up thread ends on the needle plate. The needle plate thread suction structure of this bartacking machine includes a needle plate with a moving blade for cutting thread. The needle plate thread suction structure includes an air pipe one, a negative pressure generator, a solenoid valve, an air source treatment element, and an air pipe two. The inner end of air pipe one extends to one side of the moving blade and is positioned opposite to the moving blade. The outer end of air pipe one is connected to the negative pressure generator. The negative pressure generator, solenoid valve, and air source treatment element are all connected through air pipe two. In this utility model, air pipe one is installed on one side of the moving blade, allowing it to suck up all thread ends when it does so, preventing thread from flying around and fraying. The opposite positioning of air pipe one to the moving blade avoids interference between the moving blade and air pipe one when the blade rotates to cut thread, improving the stability and efficiency of thread suction.

Description

Technical Field

[0001] This utility model belongs to the technical field of bar knotting machines, and relates to a needle plate suction structure for a bar knotting machine and a bar knotting machine. Background Technology

[0002] A bartacking machine is a machine used to reinforce fabrics and is suitable for various sewing scenarios, such as denim, woven fabrics, knitted fabrics, and button sewing. Currently, bartacking machines have problems with some materials, such as difficulty in sewing, unraveling threads, and loose threads on the bottom, which increases the number of steps in the sewing process and results in unsightly stitches.

[0003] Patent application number 201820539845.1 discloses a thread cutting device for knitting machinery, comprising a needle plate, scissors, a power mechanism, and an air duct. The needle plate has a thread suction hole; the air duct opening is located below the thread suction hole of the needle plate and does not affect the cutting action of the scissors.

[0004] The aforementioned literature describes using a duct to extract the thread ends left on the needle plate, but this method still has shortcomings. The duct's ability to extract thread ends is unstable and may cause the thread ends to fly around haphazardly. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a needle plate suction structure for a bar knotting machine and a bar knotting machine. The technical problem this utility model aims to solve is how to stably suck up the thread ends on the needle plate.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A needle plate thread suction structure for a bartacking machine, the bartacking machine including a needle plate, the needle plate being provided with a movable blade for cutting thread, characterized in that the needle plate thread suction structure includes an air tube one, a negative pressure generator, a solenoid valve, an air source processing element and an air tube two, the air tube one being connected to the needle plate, the inner end of the air tube one extending to one side of the movable blade and the air tube one being arranged opposite to the movable blade, the outer end of the air tube one being connected to the negative pressure generator, the negative pressure generator, the solenoid valve and the air source processing element being connected through the air tube two.

[0008] Its working principle is as follows: The air source processing element provides an air source when turned on. The air source is transmitted to the solenoid valve through air pipe two. The solenoid valve transmits the air source to the negative pressure generator through air pipe two connected to the other end. The negative pressure generator generates negative pressure. The electronic control provides a signal to the solenoid valve. When the moving blade finishes cutting the thread, the solenoid valve receives the signal and drives the negative pressure generator to work. The negative pressure generator generates negative pressure (i.e., low air pressure) to air pipe one, thereby sucking the thread end onto air pipe one. The negative pressure generator can suck up the thread end on the needle plate. After the thread end is sucked up, the solenoid valve stops working and the negative pressure generator stops working when the next sewing starts. The machine starts sewing. The solenoid valve can control the thread end sucking time according to the actual situation. Air pipe one is installed on one side of the moving blade, so that when air pipe one sucks up the thread end, it can suck up all the thread end of that part. The positioning is accurate and avoids the thread end flying around and the thread coming loose at the start of the sewing. Air pipe one is set opposite to the moving blade to avoid interference between the moving blade and air pipe one when the moving blade rotates to cut the thread, which improves the stability and efficiency of thread end sucking.

[0009] In the needle plate suction structure of the above-mentioned knotting machine, the air tube is fixedly connected to the needle plate, the needle plate is provided with a fixing seat, the top of the fixing seat has a mounting hole that communicates with the air tube, the diameter of the mounting hole is greater than or equal to the diameter of the air tube, and the air tube passes through the mounting hole and is located on the needle plate.

[0010] The endotracheal tube is fixedly connected to the needle plate, which improves the stability of the connection and makes the endotracheal tube stable when sucking up the thread end. The needle plate is provided with a fixing seat, which has a mounting hole that allows the endotracheal tube to be inserted and fixed, improving the stability of the endotracheal tube when sucking up the thread end on the needle plate. The diameter of the mounting hole is greater than or equal to the diameter of the endotracheal tube, so that the endotracheal tube can be located in the mounting hole and will not cause the endotracheal tube to shift. When the diameter of the mounting hole is greater than the diameter of the endotracheal tube, it is slightly greater.

[0011] In the needle plate suction structure of the above-mentioned knotting machine, the bottom surface of the fixed seat is higher than the height of the moving knife.

[0012] The bottom surface of the fixed base is higher than the height of the moving blade, so that the height of the first air tube is higher than the height of the moving blade, thus avoiding interference between the moving blade and the first air tube when the moving blade rotates to cut the wire.

[0013] In the needle plate suction structure of the above-mentioned knotting machine, the fixed seat is fixedly connected to the needle plate, either as an integral structure or by means of threads.

[0014] The mounting base and needle plate are fixedly connected or are an integral structure, which improves the stability of the connection between the two and makes the air tube more stable in picking up the wire ends. The mounting base and needle plate are connected by threads, so that they can be removed directly through the threaded connection structure for maintenance without disassembling the machine.

[0015] In the needle plate suction structure of the above-mentioned knotting machine, the first air tube and the second air tube are copper tubes, aluminum tubes, or plastic tubes.

[0016] Trachea 1 and Trachea 2 can be made of copper, which has high strength and stability, promotes rapid gas flow, and is easy to bend, making them suitable for more scenarios. Alternatively, trachea 1 and Trachea 2 can be made of aluminum, which has low maintenance costs, long service life, and good sealing performance. Or, trachea 1 and Trachea 2 can be made of plastic, which has good flexibility, is suitable for scenarios with frequent bending, and is easy to maintain.

[0017] Another objective of this utility model is to provide a bar knotting machine, which includes the needle plate suction structure of any of the above-mentioned bar knotting machines.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] 1. The air tube is installed on one side of the moving blade, so that when the air tube picks up the thread end, it can pick up all the thread ends in that part, with precise positioning, avoiding the thread ends flying around and the thread coming loose. The air tube is set opposite to the moving blade, which avoids interference between the moving blade and the air tube when the moving blade rotates to cut the thread, thus improving the stability and efficiency of picking up the thread ends.

[0020] 2. This mounting base has mounting holes that allow the air tube to be inserted and fixed, improving the stability of the air tube when it is on the needle plate. The diameter of the mounting hole is greater than or equal to the diameter of the air tube, ensuring that the air tube is positioned within the mounting hole and will not shift.

[0021] 3. Both trachea one and trachea two are made of copper. Copper tubes have high strength and stability, can promote rapid gas flow, and are easy to bend, making trachea one and trachea two adaptable to more scenarios. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the needle plate suction structure of this knotting machine.

[0023] Figure 2 This is a partial schematic diagram of the needle plate suction structure of this knotting machine.

[0024] Figure 3 This is a partial schematic diagram of the needle plate suction structure of this knotting machine.

[0025] In the diagram, 1 is the needle plate; 2 is the moving knife; 3 is the first air tube; 4 is the negative pressure generator; 5 is the solenoid valve; 6 is the air source treatment element; 7 is the second air tube; 8 is the fixing base; and 9 is the mounting hole. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] Example 1

[0028] like Figure 1 and 2 As shown, the knotting machine includes a needle plate 1, on which a movable blade 2 for cutting thread is provided. The needle plate thread suction structure includes an air tube 3, a negative pressure generator 4, a solenoid valve 5, an air source treatment element 6, and an air tube 7. The air tube 3 is connected to the needle plate 1, and the inner end of the air tube 3 extends to one side of the movable blade 2 and is arranged opposite to the movable blade 2. The outer end of the air tube 3 is connected to the negative pressure generator 4. The negative pressure generator 4, the solenoid valve 5, and the air source treatment element 6 are all connected through the air tube 7. When the air source processing element 6 is activated, it provides an air source, which is transmitted to the solenoid valve 5 through the second air pipe 7. The solenoid valve 5 then transmits the air source to the negative pressure generator 4 through the other end of the second air pipe 7. The negative pressure generator 4 generates a negative pressure, and the electronic control system provides a signal to the solenoid valve 5. When the moving blade 2 finishes cutting the thread, the solenoid valve 5 receives the signal and drives the negative pressure generator 4 to work. The negative pressure generator 4 generates a negative pressure (i.e., low air pressure) to the first air pipe 3, thereby drawing the thread end onto the first air pipe 3. The negative pressure generator 4 can then be used to clean the thread end on the needle plate 1. After the thread end is sucked up, the solenoid valve 5 and the negative pressure generator 4 stop working when the next sewing begins. The machine then starts sewing. The solenoid valve 5 can control the thread end sucking time according to the actual situation. Air pipe 3 is installed on one side of the moving blade 2, so that when air pipe 3 sucks up the thread end, it can suck up all the thread ends in that part. The positioning is accurate, avoiding the thread ends flying around and the thread coming loose at the start of the sewing. Air pipe 3 is set opposite to the moving blade 2, which avoids interference between the moving blade 2 and air pipe 3 when the moving blade 2 rotates to cut the thread, thus improving the stability and efficiency of thread end sucking.

[0029] like Figure 2 and 3 As shown, the endotracheal tube 3 is fixedly connected to the needle plate 1. The needle plate 1 is provided with a fixing seat 8. The top of the fixing seat 8 has a mounting hole 9 that communicates with the endotracheal tube 3. The diameter of the mounting hole 9 is greater than or equal to the diameter of the endotracheal tube 3. The endotracheal tube 3 passes through the mounting hole 9 and is located on the needle plate 1. The fixed connection between the endotracheal tube 3 and the needle plate 1 improves the stability of the connection and makes the endotracheal tube 3 stable when sucking up the thread end. The fixing seat 8 on the needle plate 1 has a mounting hole 9 that allows the endotracheal tube 3 to be inserted and fixed, improving the stability of the endotracheal tube 3 when sucking up the thread end on the needle plate 1. The diameter of the mounting hole 9 is greater than or equal to the diameter of the endotracheal tube 3, so that the endotracheal tube 3 can be located within the mounting hole 9 and will not cause the endotracheal tube 3 to shift. When the diameter of the mounting hole 9 is greater than the diameter of the endotracheal tube 3, it is slightly greater.

[0030] like Figure 2 and3 As shown, the bottom surface of the fixed base 8 is higher than the height of the moving blade 2. This difference in height ensures that the height of the air tube 3 is higher than that of the moving blade 2, preventing interference between the moving blade 2 and the air tube 3 when the blade rotates to cut the wire.

[0031] like Figure 2 and 3 As shown, the fixing seat 8 and the needle plate 1 are either fixedly connected as a single unit or connected by threads. The fixed connection between the fixing seat 8 and the needle plate 1, or as a single unit, improves the stability of the connection between the two, allowing the air tube 3 to more stably pick up the thread end. The connection between the fixing seat 8 and the needle plate 1 by threads allows them to be disassembled directly through the threaded connection structure for maintenance without disassembling the machine.

[0032] like Figure 1 and 2 As shown, trachea 1 (3) and trachea 2 (7) are made of copper, aluminum, or plastic. If trachea 1 (3) and trachea 2 (7) are made of copper, copper provides high strength and stability, promotes rapid gas flow, and is easy to bend, allowing them to adapt to more scenarios. Alternatively, if trachea 1 (3) and trachea 2 (7) are made of aluminum, aluminum offers low maintenance costs, long service life, and good sealing. Alternatively, if trachea 1 (3) and trachea 2 (7) are made of plastic, plastic offers good flexibility, is suitable for scenarios requiring frequent bending, and is easy to maintain.

[0033] Example 2

[0034] The general content of this embodiment is the same as that of embodiment 1, except that: in this embodiment, a bar knotting machine is provided, including the needle plate suction structure of any of the bar knotting machines in embodiment 1.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A needle plate suction structure for a bar knotting machine, the bar knotting machine comprising a needle plate (1), wherein the needle plate (1) is provided with a movable blade (2) for cutting thread, characterized in that, The needle plate suction structure includes an air tube one (3), a negative pressure generator (4), a solenoid valve (5), an air source processing element (6), and an air tube two (7). The air tube one (3) is connected to the needle plate (1). The inner end of the air tube one (3) extends to one side of the moving knife (2) and the air tube one (3) is arranged opposite to the moving knife (2). The outer end of the air tube one (3) is connected to the negative pressure generator (4). The negative pressure generator (4), the solenoid valve (5), and the air source processing element (6) are all connected through the air tube two (7).

2. The needle plate suction structure of a bar knotting machine according to claim 1, characterized in that, The needle plate (1) is fixedly connected to the first air tube (3). The needle plate (1) is provided with a fixing seat (8). The top of the fixing seat (8) has an installation hole (9) that communicates with the first air tube (3). The diameter of the installation hole (9) is greater than or equal to the diameter of the first air tube (3). The first air tube (3) passes through the installation hole (9) and is located on the needle plate (1).

3. The needle plate suction structure of a bar knotting machine according to claim 2, characterized in that, The bottom surface of the fixed base (8) is higher than the height of the moving knife (2).

4. The needle plate suction structure of a bar knotting machine according to claim 2, characterized in that, In the needle plate (1) suction structure of the above-mentioned knotting machine, the fixed seat (8) is fixedly connected to the needle plate (1) or is an integral structure or is connected by threads.

5. The needle plate suction structure of a bar knotting machine according to claim 1, characterized in that, The first trachea (3) and the second trachea (7) are made of copper, aluminum or plastic.

6. A knotting machine, characterized in that, The knotting machine includes the needle plate suction structure as described in any one of claims 1-5.

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