Hot melting wire cutting mechanism

Abstract

The utility model discloses a hot melting wire cutting mechanism, which comprises a mounting arm, a cylinder, a scissor piece, a wire clamping seat, an electric heating wire and a wire pressing piece, the wire pressing piece, the electric heating wire, the scissor piece and the wire clamping seat are sequentially arranged at the front part of the mounting arm from top to bottom, the cylinder is arranged at the rear part of the mounting arm and is connected with the scissor piece, and the scissor piece is driven by the cylinder to extend or retract. The yarn clamping device is matched with the yarn clamping seat to clamp the yarn during withdrawing; the electric heating wire is externally connected with a power supply and is in contact with the yarn for fusing when the yarn is clamped, and the yarn pressing sheet is arranged above the electric heating wire and is used for pressing the fused yarn end to a yarn tube for adhesion. According to the utility model, the structure of wire breaking and wire end fixing is simplified on the whole, the operation complexity is reduced while the component cost is reduced, and the equipment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to a hot melt cutting mechanism. Background Technology

[0002] After a yarn bobbin is wound by a yarn-winding machine, the yarn must be cut first. After replacing the bobbin with a new one, the yarn is reattached to the new bobbin to continue winding the next bobbin. Traditionally, when changing bobbins, the scissors are moved to the yarn position and the yarn is cut directly. However, the end of the previous bobbin is not secured, requiring an additional thread-inserting mechanism to grasp the end and insert it into the bobbin to secure it. This invention aims to design an alternative yarn-cutting method and secure the yarn end. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a hot-melt yarn cutting mechanism that breaks the yarn by hot melting and can fix the yarn end on the bobbin by relying on the stickiness left after hot melting.

[0004] This utility model adopts the following technical solution: a hot melt yarn cutting mechanism, including an mounting arm, a cylinder, a scissor piece, a yarn clamping seat, a heating wire, and a pressure plate. The pressure plate, heating wire, scissor piece, and yarn clamping seat are arranged sequentially from top to bottom at the front of the mounting arm. The cylinder is located at the rear of the mounting arm and connected to the scissor piece. The scissor piece is driven by the cylinder to extend or retract. When retracted, it cooperates with the yarn clamping seat to clamp the yarn. The heating wire is externally powered and melts the yarn when it is clamped. The pressure plate is located above the heating wire and is used to press the melted yarn end against the yarn tube for adhesion.

[0005] As an improvement, the head of the scissor piece has a hook groove on the side. When the scissor piece extends and is moved to the yarn by the mounting arm, the yarn is accommodated in the hook groove, and when it is retracted, the yarn is hooked back and clamped with the yarn clamping seat.

[0006] As an improvement, the yarn clamp is mounted on the mounting arm and can move back and forth. A spring is provided at the rear of the yarn clamp. When the scissors and the yarn clamp clamp the yarn, the yarn clamp uses the spring at the rear to elastically resist and limit the yarn.

[0007] As an improvement, a limiting groove is provided on the mounting arm, and a slider is provided at the lower part of the wire clamp. The slider is located in the limiting groove, and moves in the limiting groove and is limited in the front and back when the wire clamp moves back and forth.

[0008] As an improvement, the yarn clamp includes a rigid base and a flexible clamping head, with the clamping head mounted on the front of the base to contact the yarn.

[0009] As an improvement, the front part of the wire pressing sheet has a groove for limiting the yarn.

[0010] As an improvement, a waist-shaped hole is arranged on the wire pressing sheet along the front-back direction, the wire pressing sheet is installed on the mounting arm by passing the fastener through the waist-shaped hole, and the front-back position of the wire pressing sheet can be adjusted when the fastener is loosened.

[0011] The beneficial effects of the utility model are as follows: after the movable scissors member cooperates with the thread holder to complete the clamping and limiting of the yarn, the yarn is heated and fused by the heating wire, the disconnection of the yarn is completed, the yarn end is fixed on the bobbin by the adhesion of the yarn end after heat fusion, the structure of the broken line and the fixed yarn end is simplified as a whole, the operation complexity is reduced while the component cost is reduced, and the equipment efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model Figure One .

[0013] Figure 2 is a schematic diagram of the three-dimensional structure of the utility model Figure Two .

[0014] Figure 3 is a schematic diagram of the three-dimensional structure of the utility model Figure Three . DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0016] As Figure 1 , 2 , 3 shows the specific embodiments of the heat fusion thread cutting mechanism of the utility model. The embodiments include a mounting arm 1, an air cylinder 2, a scissors member 3, a thread holder 4, a heating wire 5 and a wire pressing sheet 6, the wire pressing sheet 6, the heating wire 5, the scissors member 3 and the thread holder 4 are sequentially arranged from top to bottom on the front part of the mounting arm 1, the air cylinder 2 is arranged on the rear part of the mounting arm 1 and is connected to the scissors member 3, the scissors member 3 is driven by the air cylinder 2 to extend or retract, and the yarn is clamped when the scissors member 3 is retracted in cooperation with the thread holder 4; the heating wire 5 is connected to a power supply and fuses the yarn when the yarn is clamped by the heating wire 5, and the wire pressing sheet 6 is above the heating wire 5 and is used to press the fused yarn end to the yarn tube for adhesion.

[0017] The utility model discloses a shearing arm 1 is set up on a mobile frame, and the mobile frame can move left and right and back and forth in horizontal direction, and then can drive the whole structure to retreat and leave the position of yarn, and is moved to the position of yarn when needing to melt the yarn. As an innovation, the shear 3 and the thread holder 4 of the utility model do not cut off the yarn, but only clamp the yarn; when needing to melt the yarn, the shearing arm 1 is moved to the position of yarn, and the shear 3 on the shearing arm 1 hooks the yarn, and the shear 3 is in the state of extension at this time; then the cylinder 2 works and drives the shear 3 to retract, and then hooks the yarn back to the thread holder 4, and the shear 3 and the thread holder 4 are attached to each other, and the yarn is clamped and limited. The yarn that is hooked back is attached to the electric heating wire 5 above, the electric heating wire 5 is electrified and heated, and the yarn can be melted; the yarn below the melted yarn is clamped by the shear 3 and the thread holder 4, and the upper part is placed on the thread pressing piece 6, the hot-melted and sticky thread end can be stuck on the cheese by the upward movement of the thread pressing piece 6 driven by the shearing arm 1, and then the fixing of the thread end is completed. After the above functions are completed, the cheese that is finished to beat the thread is taken down and replaced with a new tube, and the thread end at the shear 3 and the thread holder 4 is connected to the new tube by the thread connecting mechanism, and the shearing arm 1 retreats together with the components thereon, and the next tube can be beaten. The utility model simplifies the structure of the broken thread and the fixed thread end, reduces the operation complexity while reducing the component cost, and improves the equipment efficiency.

[0018] As an improved embodiment, the head side of the shear 3 has a hook groove 31, and when the shear 3 is extended and reaches the yarn by the movement of the shearing arm 1, the yarn is contained in the hook groove 31, and when retracted, the yarn is hooked and clamped by the thread holder 4.

[0019] As shown in Figure 1 , the shearing arm 1 is moved to the position of yarn when in use, and the yarn is moved into the hook groove 31 from the open side of the hook groove 31, and when the shear 3 is retracted, the yarn is hooked by the hook body and clamped by the thread holder 4.

[0020] As an improved embodiment, the thread holder 4 is movably arranged on the shearing arm 1, and the rear part of the thread holder 4 is provided with a spring 41, and when the shear 3 and the thread holder 4 clamp the yarn, the thread holder 4 elastically contacts and limits the yarn through the spring 41 at the rear part.

[0021] As shown in Figure 2 , 3To avoid the yarn from being damaged by the hard clamping state, a floating thread holder 4 structure is further provided. The thread holder 4 is connected to the mounting arm 1 through the rear spring 41. When the thread holder 4 is pressed, the spring 41 is compressed and the thread holder 4 moves backward. When the thread holder 4 is not pressed, the spring 41 releases the thread holder 4 to return to the original position. Thus, the thread holder 4 is in a soft structure state and does not form a hard extrusion on the yarn.

[0022] As an improved embodiment, a limiting groove 11 is arranged on the mounting arm 1. A sliding block 42 is arranged at the lower part of the thread holder 4. The sliding block 42 is located in the limiting groove 11 and moves forward and backward in the limiting groove 11 when the thread holder 4 moves forward and backward.

[0023] As shown in Figure 2 , 3 , the sliding block 42 is arranged to have the same width as the limiting groove 11. Thus, when the thread holder 4 moves, the sliding block 42 slides forward and backward along the limiting groove 11 to stabilize the forward and backward movement of the thread holder 4. The movement limit of the thread holder 4 is limited by the limiting groove 11. When the sliding block 42 moves to the front and rear ends of the limiting groove 11, it is limited. Thus, the position of the thread holder 4 is orderly maintained.

[0024] As an improved embodiment, the thread holder 4 includes a hard seat body 402 and a soft thread clamping head 401. The thread clamping head 401 is installed at the front of the seat body 402 and contacts the yarn.

[0025] As shown in Figure 1 , 2 , the thread clamping head 401 contacts the yarn at the front. The thread clamping head 401 can be made of relatively soft materials such as rubber and plastic. When the thread clamping head 401 contacts the yarn, it protects the yarn and avoids hard wear on the yarn.

[0026] As an improved embodiment, the front of the thread pressing piece 6 has a groove 61 for limiting the yarn.

[0027] As shown in Figure 1 , the groove 61 is arranged to allow the broken yarn to be placed in the groove 61. When the thread pressing piece 6 moves, the yarn remains in the groove 61 and does not deviate. This ensures that the subsequent thread end is successfully fixed on the bobbin.

[0028] As an improved embodiment, a waist-shaped hole 62 is arranged on the thread pressing piece 6 in the front and rear direction. A fastener 63 is arranged in the waist-shaped hole 62 to install the thread pressing piece 6 on the mounting arm 1. When the fastener 63 is loosened, the position of the thread pressing piece 6 can be adjusted.

[0029] As shown in Figure 1As shown, by loosening and locking the fastener 63, the pressing wire piece 6 can be disassembled and adjusted along the waist-shaped hole 62 to adjust the relative position of the fastener 63, and then adjust the front and back positions of the pressing wire piece 6, so that the front position of the pressing wire piece 6 corresponds to the position of the electric heating wire 5, and the function of the yarn after being melted and transferred is ensured.

[0030] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the idea of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application shall be considered as the protection scope of the present application.

Claims

1. A hot wire cutting mechanism characterized by: The device comprises a mounting arm (1), a cylinder (2), a scissors piece (3), a thread clamping seat (4), a heating wire (5) and a thread pressing piece (6), the thread pressing piece (6), the heating wire (5), the scissors piece (3) and the thread clamping seat (4) are sequentially arranged from top to bottom at the front of the mounting arm (1), the cylinder (2) is arranged at the rear of the mounting arm (1) and is connected with the scissors piece (3), the scissors piece (3) is driven by the cylinder (2) to extend or retract, and the thread clamping seat (4) is cooperated to clamp the thread when the scissors piece (3) retracts; the heating wire (5) is connected with a power supply and melts the thread when the thread is clamped and the heating wire (5) contacts the thread, and the thread pressing piece (6) is arranged above the heating wire (5) and is used to press the melted thread head to the thread tube to adhere.

2. A hot wire severing mechanism according to claim 1, wherein: The head side of the scissors piece (3) is provided with a hook groove (31), the thread is accommodated in the hook groove (31) when the scissors piece (3) extends and reaches the thread by the movement of the mounting arm (1), and the thread is hooked and clamped by the thread clamping seat (4) when the scissors piece (3) retracts.

3. A hot wire severing mechanism according to claim 1 or 2, wherein: The thread clamping seat (4) is movably arranged on the mounting arm (1), the rear of the thread clamping seat (4) is provided with a spring (41), and the thread clamping seat (4) elastically contacts and limits the thread by the spring (41) when the scissors piece (3) and the thread clamping seat (4) clamp the thread.

4. A hot wire severing mechanism according to claim 3, wherein: The mounting arm (1) is provided with a limiting groove (11), the thread clamping seat (4) is provided with a sliding block (42), the sliding block (42) is located in the limiting groove (11) and moves in the limiting groove (11) when the thread clamping seat (4) moves forward and backward, and the forward and backward movement of the thread clamping seat (4) is limited.

5. A hot wire severing mechanism according to claim 1 or 2, wherein: The thread clamping seat (4) comprises a hard seat body (402) and a soft thread clamping head (401), and the thread clamping head (401) is arranged at the front of the seat body (402) and contacts the thread.

6. A hot wire severing mechanism according to claim 1 or 2, wherein: The front of the thread pressing piece (6) is provided with a groove (61) for limiting the thread.

7. A hot wire severing mechanism according to claim 1 or 2, wherein: The thread pressing piece (6) is provided with a waist-shaped hole (62) in the front-rear direction, the thread pressing piece (6) is arranged on the mounting arm (1) by a fastener (63) passing through the waist-shaped hole (62), and the position of the thread pressing piece (6) can be adjusted when the fastener (63) is loosened.

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