Pneumatic yarn threader

Abstract

The utility model relates to the technical field of pultrusion material production of glass fiber and carbon fiber etc. especially relates to a pneumatic yarn joining device, including pneumatic drive arrangement, still include: axial closed -loop chamber device, including main frame, limit block, the sliding block is arranged between main frame and limit block and slides, the air hole is set up along its axial in main frame, main frame sets up U type groove, the slide hole is set up in limit block, the connecting rod is arranged in the slide hole and slides, the spring is set up in connecting rod sleeve, the slide hole is located and sets up the limit ring, manual back -and -forth device is used for pulling the sliding block to move, the utility model has the following beneficial effect: high degree of automation: can automatically complete the joint of yarn, improves production efficiency, the reliability is strong: adopts pneumatic drive, and the action is stable and reliable, is applicable to the particularity of glass fiber and carbon fiber, simple operation: single hand can pull the trigger of the pull rod and buckle pressure air gun, therefore convenient for the operation of manual control device, simple and easy to use.

Description

Technical Field

[0001] This utility model relates to the field of pultrusion material production technology such as glass fiber and carbon fiber, and in particular to a pneumatic yarn splicer. Background Technology

[0002] Splicing yarns is a crucial step in the production of glass fiber and carbon fiber. Traditional splicing methods typically rely on manual operation, which is inefficient and prone to errors. With technological advancements, pneumatic splicers have emerged, using compressed air as power to splice yarns using the principle of air twisting.

[0003] However, traditional yarn splicers are all imported products, which are expensive and slow, often failing to meet the demands. Therefore, developing a high-efficiency and reliable pneumatic yarn splicer is of great significance for improving production efficiency and product quality. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic yarn splicer that can automatically and quickly complete the splicing of yarns, and is suitable for the production of glass fiber and carbon fiber.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pneumatic yarn splicer, including a pneumatic drive device, and further comprising:

[0006] An axial closed-loop chamber device includes a main frame and a limiting block. A slider is slidably arranged between the main frame and the limiting block. An air hole is opened in the main frame along its axial direction. A U-shaped groove communicating with the air hole is opened on the side of the main frame facing the slider. A sliding hole is opened in the limiting block along its axial direction. A connecting rod is slidably arranged in the sliding hole. The end of the connecting rod is connected to the slider. A spring for resetting the slider is sleeved on the connecting rod. A limiting ring that abuts against the spring is arranged in the sliding hole.

[0007] The manual pull-back device, connected to the connecting rod, is used to pull the slider to move.

[0008] Preferably, the inner wall of the U-shaped groove is provided with an exhaust groove that communicates with the air hole along the horizontal direction.

[0009] Preferably, the end of the main frame away from the slider is connected to a threaded port that communicates with the air hole.

[0010] Preferably, the manual pull-back device includes an L-shaped rod, a pull rod, and a fixing ring. One end of the L-shaped rod is hinged to the connecting rod, the middle part is hinged to the axial closed-loop chamber device, and the other end is hinged to the pull rod. The fixing ring is located at the bottom of the axial closed-loop chamber device, and the pull rod passes through the fixing ring.

[0011] Preferably, the end of the pull rod is bent into a hook shape.

[0012] Preferably, the axial closed-loop chamber device is equipped with a yarn anti-misclamping device, which is a rounded chamfered metal plate located on both sides of the U-shaped groove to prevent the yarn from being clamped between the slider and the main frame.

[0013] Preferably, the top of the U-shaped groove is hollowed out.

[0014] Preferably, the pneumatic drive device is an air gun, whose gas outlet is connected to a threaded port.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. High degree of automation: By placing two yarns into a U-shaped groove and utilizing the principle of air twisting, the yarn splicing can be completed automatically, improving production efficiency;

[0017] 2. High reliability: Pneumatically driven, the operation is stable and reliable, suitable for the special properties of glass fiber and carbon fiber;

[0018] 3. Easy to operate: The lever and trigger of the air gun can be pulled with one hand, making it easy to operate with manual control and simple to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the connection relationship between the axial closed-loop chamber device and the manual pull-back device in the embodiment;

[0020] Figure 2 This is a side view of the axial closed-loop chamber device and the manual pull-back device in the embodiment;

[0021] Figure 3 This is a cross-sectional view of the axial closed-loop chamber device and the manual pull-back device in the embodiment;

[0022] Figure 4 This is an overall schematic diagram of the pneumatic yarn splicer in the embodiment.

[0023] In the diagram, 1. Pneumatic drive device; 2. Axial closed-loop chamber device; 21. Main frame; 22. Threaded opening; 23. Limiting block; 24. Slider; 25. Air hole; 26. Sliding hole; 27. Connecting rod; 28. Spring; 29. ​​Limiting ring; 3. U-shaped groove; 31. Exhaust groove; 4. Manual pull-back device; 41. L-shaped rod; 42. Pull rod; 43. Fixing ring; 5. Yarn anti-pinch device. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0026] Example:

[0027] like Figure 1 and Figure 2 As shown, the pneumatic yarn splicer of this utility model includes an axial closed-loop chamber device 2 and a manual pull-back device 4. The axial closed-loop chamber device 2 is used to place two yarns to be spliced. The axial closed-loop chamber device 2 includes a cylindrical main frame 21, a limiting block 23, and a slider 24. There is a space between the main frame 21 and the limiting block 23 for the slider 24 to slide, and the slider 24 is slidably connected between the main frame 21 and the limiting block 23. The end of the main frame 21 away from the slider is connected to a threaded port 22. A U-shaped groove 3 is formed horizontally on the side of the main frame 21 facing the slider 24. The U-shaped groove 3 is a through groove, and the two yarns are placed in the U-shaped groove 3 during splicing. The top of the U-shaped groove 3D is hollowed out, which allows the operator to observe whether the yarns are correctly placed through the hollowed-out part at the top. The manual pull-back device 4 includes an L-shaped rod 41, a pull rod 42, and a fixing ring 43. The lower end of the L-shaped rod 41 is hinged to the pull rod 42. The end of the pull rod 42 away from the L-shaped rod 41 passes through the fixing ring 43 and is slidably connected to the fixing ring 43. The end of the pull rod 42 is bent downward into a hook shape, making it easy for the user to pull with their fingers. The fixing ring 43 is fixedly connected to the bottom of the main frame 21. A yarn anti-pinch device 5 is fixedly connected to the bottom of the axial closed-loop chamber device 2. The yarn anti-pinch device 5 is a rounded chamfered metal plate with a rounded cross-section. It extends from the bottom of the axial closed-loop chamber device 2 to both sides of the U-shaped groove 3, so that when the yarn is placed between the slider 24 and the main frame 21, the height of the yarn is within the range facing the U-shaped groove 3, preventing the yarn from being accidentally pinched by the slider 24 and the main frame 21.

[0028] like Figure 3As shown, the main frame 21 has vent holes 25 along its axial direction for ventilation. One end of the vent hole 25 communicates with the threaded opening 22, and the other end communicates with the U-shaped groove 3. The inner wall of the U-shaped groove 3 has a horizontally oriented exhaust groove 31 communicating with the vent hole 25. The exhaust groove 31 is also a through groove, used to discharge excess gas during air twisting to maintain smooth gas flow. The limiting block 23 has a sliding hole 26 along its axial direction, and a connecting rod 27 is slidably connected in the sliding hole 26. One end of the connecting rod 27 is fixedly connected to the slider 24, and the other end extends through the sliding hole 26 to the outside of the limiting block 23. A spring 28 is sleeved on the connecting rod 27. A limiting ring 29 is fixedly connected to the end of the sliding hole 26 away from the slider 24. One end of the spring 28 in the length direction abuts against the slider 24, and the other end abuts against the limiting ring 29, causing the slider 24 to tend to move closer to the U-shaped groove 3. The middle part of the L-shaped rod 41 is hinged to the axial closed-loop chamber device 2, and the end of the L-shaped rod 41 away from the tie rod 42 is hinged to the end of the connecting rod 27.

[0029] It should be noted that there is a certain amount of play between the pull rod 42 and the fixed ring 43, and between the connecting rod 27 and the sliding hole 26, rather than a tight connection. This allows the L-shaped rod 41 to rotate at a small angle when the pull rod 42 is pulled, thereby pulling the connecting rod 27 and causing the slider 24 to move slightly.

[0030] like Figure 4 As shown, this pneumatic yarn splicer also includes a pneumatic drive device 1, which provides gas for air twisting to the axial closed-loop chamber device 2. In this embodiment, the pneumatic drive device 1 is an air gun, which has a trigger and a gas outlet, the gas outlet of which is connected to a threaded port 22. The air gun is connected to an external compressed air source, and when the trigger of the air gun is pulled, compressed gas is ejected from the gas outlet of the air gun.

[0031] Since air twisting technology is an existing technology and has already been applied in existing pneumatic yarn splicers, it will not be elaborated on here.

[0032] The method of using the pneumatic yarn splicer in this embodiment is as follows:

[0033] 1. Inserting the yarn: The operator holds the air gun with one hand and pulls the hook-shaped part of the lever 42 with one finger. The movement of the lever 42 causes the L-shaped rod 41 to rotate, pulling the connecting rod 27 and the slider 24. The slider 24 moves axially along the closed-loop chamber, at which point the spring 28 is compressed, forming a space between the slider 24 and the main frame 21 for placing the yarn. Two sections of yarn with a head length of 10-15cm are placed between the slider 24 and the main frame 21. Then, the lever 42 is released, and the slider 24 slides towards the main frame 21 under the elastic force of the spring 28, confining the yarn joint in the U-shaped groove 3.

[0034] 2. Yarn splicing: The operator places their finger on the trigger of the air gun and pulls the trigger. Compressed gas enters the U-shaped groove 3 through the air hole 25 of the axial closed-loop chamber device 2, which twists the yarn to form a new yarn splice.

[0035] 3. Remove the connector: Manually pull back the lever 42 to make the slider 24 slide away from the main frame 21 according to the process in step 1, open the axial closed-loop chamber device 2, and remove the connected yarn connector.

Claims

1. A pneumatic yarn splicer, comprising a pneumatic drive device (1), characterized in that, Also includes: An axial closed-loop chamber device (2) includes a main frame (21) and a limiting block (23). A slider (24) is slidably arranged between the main frame (21) and the limiting block (23). An air hole (25) is opened in the main frame (21) along its axial direction. A U-shaped groove (3) communicating with the air hole (25) is opened on the side of the main frame (21) facing the slider (24). A sliding hole (26) is opened in the limiting block (23) along its axial direction. A connecting rod (27) is slidably arranged in the sliding hole (26). The end of the connecting rod (27) is connected to the slider (24). A spring (28) for resetting the slider (24) is sleeved on the connecting rod (27). A limiting ring (29) abutting against the spring (28) is arranged in the sliding hole (26). The manual pull-back device (4) is connected to the connecting rod (27) and is used to pull the slider (24) to move.

2. The pneumatic yarn splicer according to claim 1, characterized in that, The inner wall of the U-shaped groove (3) is provided with an exhaust groove (31) that communicates with the air hole (25) in the horizontal direction.

3. A pneumatic yarn splicer according to claim 1, characterized in that, The end of the main frame (21) away from the slider (24) is connected to a threaded port (22) that communicates with the air hole (25).

4. A pneumatic yarn splicer according to claim 1, characterized in that, The manual pull-back device (4) includes an L-shaped rod (41), a pull rod (42), and a fixing ring (43). One end of the L-shaped rod (41) is hinged to the connecting rod (27), the middle part is hinged to the axial closed-loop chamber device (2), and the other end is hinged to the pull rod (42). The fixing ring (43) is located at the bottom of the axial closed-loop chamber device (2), and the pull rod (42) passes through the fixing ring (43).

5. A pneumatic yarn splicer according to claim 4, characterized in that, The end of the lever (42) is bent into a hook shape.

6. A pneumatic yarn splicer according to claim 1, characterized in that, A yarn anti-mispinch device (5) is provided on the axial closed-loop chamber device (2). The yarn anti-mispinch device (5) is a rounded chamfered metal plate located on both sides of the U-shaped groove (3) to prevent the yarn from being clamped between the slider (24) and the main frame (21).

7. A pneumatic yarn splicer according to claim 1, characterized in that, The top of the U-shaped groove (3) is hollowed out.

8. A pneumatic yarn splicer according to claim 3, characterized in that, The pneumatic drive device (1) is an air gun, and its gas outlet is connected to the threaded port (22).

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