A yarn feeding device for balancing the tension of carbon fiber warp yarn

Abstract

The utility model discloses a yarn feeding device for balancing the tension of carbon fiber warp yarns, comprising: a first roller and a second roller arranged in sequence along the yarn feeding direction of the carbon fiber warp yarns; a balancing roller arranged between the first roller and the second roller, wherein the carbon fiber warp yarns pass around the upper surface of the first roller, the lower surface of the balancing roller, and the upper surface of the second roller in sequence along the yarn feeding direction, and the first roller and the second roller are driven to rotate clockwise and the balancing roller is driven to rotate counterclockwise by friction; a pressure regulating mechanism for driving the balancing roller to reciprocate along the yarn feeding direction perpendicular to the carbon fiber warp yarns to adjust the tension of the carbon fiber warp yarns. The utility model can automatically balance the tension of the carbon fiber warp yarns periodically, reduce the wear of the warp beam, and the cloth surface defects such as hanging warp, letting off warp, and stripe shadow.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber weaving, and in particular relates to a yarn feeding device for balancing the tension of carbon fiber warp yarns. Background Art

[0002] The yarn feeding device is generally composed of two smooth rollers and a rough balance roller. The balance roller and the two smooth rollers are usually driven by the friction force when the warp yarn is pulled, but the warp yarn will be unevenly tight if the yarn is fed for a long time. Carbon fiber has a high tensile strength and needs to pass through multiple rollers during weaving. If the yarn feeding tension is different, the warp beam and the warp beam pressure roller surface will be easily worn out by the carbon fiber with high tension, resulting in pits, which will cause the yarn to be unable to be pressed, and finally cause defects on the cloth surface such as hanging warp, warp feeding, and stripe shadows. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a yarn feeding device for balancing the tension of carbon fiber warp yarns, which can automatically and periodically balance the tension of carbon fiber warp yarns, reduce warp beam wear, and fabric surface defects such as hanging warp, letting off warp, and stripe shadows.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a yarn feeding device, comprising: a first roller and a second roller arranged in sequence along the yarn feeding direction of the carbon fiber warp yarn; a balancing roller arranged between the first roller and the second roller, wherein the carbon fiber warp yarn passes around the upper surface of the first roller, the lower surface of the balancing roller and the upper surface of the second roller in sequence along the yarn feeding direction, and the first roller and the second roller are driven to rotate clockwise and the balancing roller is driven counterclockwise by friction; a pressure adjustment mechanism is used to drive the balancing roller to reciprocate along the yarn feeding direction perpendicular to the carbon fiber warp yarn to adjust the tension of the carbon fiber warp yarn.

[0005] Furthermore, the axes of the first roller, the second roller and the balancing roller are respectively parallel, and the projections of the first roller, the second roller and the balancing roller in the axis direction thereof are in a "V" shape.

[0006] Furthermore, the pressure regulating mechanism comprises: a slide rail; a slider slidably connected to the slide rail, the balancing roller being rotationally connected to the slider; and a power unit for driving the slider to reciprocate along the slide rail.

[0007] Furthermore, the power unit comprises a cylinder, a piston rod of the cylinder is connected to the slider, and a rodless chamber of the cylinder (1) is connected to a gas source via a gas pipeline.

[0008] Furthermore, it also includes: an air pressure regulating valve (3), an air valve master switch and a manual valve; the air inlet of the air pressure regulating valve is connected to the air source via a gas pipeline, the air outlet of the air pressure regulating valve is connected to the air inlet of the air valve master switch via a gas pipeline, and the air outlet of the air valve master switch is connected to the air inlet of the manual valve and the rodless chamber of the cylinder via a gas pipeline; the manual valve is used to discharge the compressed air output from the air outlet of the air valve master switch according to a set frequency.

[0009] Furthermore, it also includes a polygonal faceplate, which is coaxially connected to the first roller and rotates synchronously with the first roller; the edge of the polygonal faceplate is slidably connected to the switch handle of the manual valve.

[0010] Furthermore, the manual valve and the gas valve master switch are respectively two-position three-way valves.

[0011] Furthermore, the first roller and the second roller are smooth steel rollers, and the surface of the balancing roller is provided with polyurethane material.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model drives the balancing roller to reciprocate along the yarn feeding direction perpendicular to the carbon fiber warp yarn through the pressure adjustment mechanism to adjust the tension of the carbon fiber warp yarn, and can automatically and periodically balance the tension of the carbon fiber warp yarn, thereby reducing warp beam wear, as well as cloth defects such as hanging warp, warp feeding, and stripe shadows. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the principle of a yarn feeding device for balancing the tension of carbon fiber warp yarns provided by an embodiment of the utility model;

[0014] In the figure: 1. Cylinder; 11. Piston rod; 2. Main air valve switch; 3. Air pressure regulating valve; 4. Polygonal faceplate; 5. Manual valve; 6. Balance roller; 7. First roller; 8. Second roller; 9. Slide rail; 10. Slider. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0016] like Figure 1As shown, a yarn feeding device for balancing the tension of carbon fiber warp yarns comprises: a balancing roller 6, a first roller 7 and a second roller 8. The first roller 7 and the second roller 8 are sequentially arranged along the yarn feeding direction of the carbon fiber warp yarns; the balancing roller 6 is arranged between the first roller 7 and the second roller 8, wherein the carbon fiber warp yarns sequentially pass over the upper surface of the first roller 7, the lower surface of the balancing roller 6 and the upper surface of the second roller 8 along the yarn feeding direction, and the first roller 7 and the second roller 8 are driven to rotate clockwise and the balancing roller 6 is driven to rotate counterclockwise by friction; the pressure regulating mechanism is used to drive the balancing roller 6 to reciprocate along the yarn feeding direction perpendicular to the carbon fiber warp yarns to adjust the tension of the carbon fiber warp yarns.

[0017] The axes of the first roller 7, the second roller 8 and the balancing roller 6 are respectively parallel, and the projections of the first roller 7, the second roller 8 and the balancing roller 6 in the axis direction thereof are in a "V" shape.

[0018] The pressure regulating mechanism comprises a slide rail 9 , a slider 10 and a power unit. The slide rail 9 is slidably connected to the slider 10 , and the balancing roller 6 is rotationally connected to the slider 10 ; the power unit is used to drive the slider 10 to reciprocate along the slide rail 9 .

[0019] The power unit includes a cylinder 1, a piston rod 11 of the cylinder 1 is connected to a slider 10, a rodless chamber of the cylinder 1 is connected to a gas source via a gas pipeline, and an air pressure regulating valve 3, a main air valve switch 2 and a manual valve 5 are also provided between the rodless chamber of the cylinder 1 and the gas source.

[0020] The air inlet of the air pressure regulating valve 3 is connected to the air source through a gas pipeline, the air outlet of the air pressure regulating valve 3 is connected to the air inlet of the gas valve master switch 2 through a gas pipeline, and the air outlet of the gas valve master switch 2 is respectively connected to the air inlet of the manual valve 5 and the rodless chamber of the cylinder 1 through the gas pipeline; the manual valve 5 is used to discharge the compressed air output from the air outlet of the gas valve master switch 2 according to the set frequency.

[0021] The polygonal faceplate 4 is coaxially connected to the first roller 7 and rotates synchronously with the first roller 7 ; the edge of the polygonal faceplate 4 is slidably connected to the switch handle of the manual valve 5 .

[0022] The specific installation method and working principle of each component in the utility model are introduced as follows.

[0023] (1) Fix the first roller 7, the balancing roller 6, and the second roller 8 in a V-shape on the wall panels on both sides to ensure that the center position of the warp yarn is consistent with the center position of the roller, and the warp yarn passes from the top of the first roller 7, the bottom of the balancing roller 6, and the top of the second roller 8 in sequence. The first roller 7 and the second roller 8 are smooth steel rollers, which are purchased according to the tension balance requirements. The balancing roller 6 is a roller with polyurethane on the surface, which is purchased according to the friction requirements.

[0024] (2) The polygonal faceplate 4 is installed at the bearing position on one side of the first roller 7. In the present invention, the polygonal faceplate 4 is a decagonal faceplate. A 5 mm small hole is left on the side of the decagonal faceplate, and a screw is passed through the hole to fix the decagonal faceplate on the bearing of the first roller 7.

[0025] (3) The carbon fiber warp yarn is pulled forward by the warp axis, and the friction between the carbon fiber warp yarn and the roller surface drives the first roller 7 and the second roller 8 to rotate clockwise, and the balance roller 6 to rotate counterclockwise.

[0026] (4) The bearings at both ends of the balancing roller 6 are fixed on the slider 10, the slider 10 is embedded in the slide rail 9, and the slide rail 9 is fixed on the wall panels on both sides (in the vertical movement direction of the balancing roller 6, determine the installation position of the cylinder 1 and the slide rail 9, and fix them with screws).

[0027] (5) The upper part of the slider 10 is connected to the piston rod 11 of the cylinder 1 (the slider 10 and the piston rod 11 of the cylinder 1 are connected by screws, and then the shaft end of the balancing roller 6 is installed in the slider 10). The cylinder 1 is purchased according to the required pressure threshold; the main air valve switch 2 is purchased according to the required number of air pipes; and the air pressure regulating valve 3 is purchased according to the pressure threshold.

[0028] (6) The first roller 7 rotates clockwise, driving the decagonal faceplate to rotate clockwise.

[0029] (7) Process the decagonal faceplate according to the size of the first roller 7 and the manual valve 5; and purchase the manual valve 5 according to the size of the decagonal faceplate and the number of ventilation pipes; install the manual valve 5 according to the rotation path of the top end of the decagonal faceplate, ensuring that when the top end of the decagonal faceplate rotates to the roller position of the manual valve 5, the switch of the manual valve 5 is just pressed to the bottom.

[0030] (8) The manual valve 5 is a two-position three-way roller spring manual valve, which is provided with an air inlet, an air outlet and an air pressure release port.

[0031] (9) Install the cylinder 1, the main air valve switch 2 and the air pressure regulating valve 3 on the same side wall panel as the decagonal faceplate.

[0032] (10) The air source is connected. The compressed air from the air source is regulated by the air pressure regulating valve 3 and then enters the air valve main switch 2. After the air valve main switch 2, it is divided into two paths, one leading to the cylinder 1 and the other leading to the manual valve 5.

[0033] (11) As the warp yarn is pulled forward, the first roller 7 and the decagonal faceplate rotate clockwise at a uniform speed at the same time. The switch handle of the manual valve 5 first acts on the long side of the concave arc of the decagonal faceplate. At this time, the air inlet of the manual valve 5 is in an open state, and the air source takes in air through the air inlet of the manual valve 5 and then exhausts air through the air outlet, thereby releasing the air source pressure.

[0034] (12) The manual valve 5 has two air outlets, one is the air pipe outlet and the other is the silencer straight outlet.

[0035] (13) As the decagonal faceplate rotates, the switch handle of the manual valve 5 gradually acts on the arc-shaped short side of the convex surface of the faceplate. At this time, the roller is under the greatest pressure and is pressed to the bottom, and the air inlet is closed.

[0036] (14) The air source cannot release pressure through the manual valve 5, so all the air source entering from the air pipe enters the cylinder 1, instantly generating a certain air pressure, which pushes the piston in the cylinder 1 downward.

[0037] (15) The air pressure on the piston and the deadweight of the balancing roller 6 drive the slider 10 to move downward along the slide rail 9, and at the same time, the balancing roller 6 fixed on the slider 10 is also driven to sink.

[0038] (16) At this time, all the warp yarns under the balancing roller 6 are pressed down to the same position, and the tension on the warp yarns is completely consistent.

[0039] (17) At this time, the tension of the warp yarn is consistent when it is pulled forward.

[0040] (18) As the decagonal faceplate continues to rotate, the switch handle of the manual valve 5 acts on the concave arc-shaped long side of the decagonal faceplate. During this process, the air inlet of the manual valve 5 is in an open state, and the air source pressure is released from the manual valve 5.

[0041] (19) Since there is no air pressure acting on the cylinder piston, the pressure on the slider 10 is only the weight of the balancing roller 6.

[0042] (20) As the warp yarns are pulled forward, the combined force of the warp yarn tensions on both sides of the balancing roller 6 is greater than the weight of the balancing roller 6. At this time, the balancing roller 6 is gradually lifted upward until the combined force of the warp yarns on both sides is the same as the weight of the balancing roller 6.

[0043] (21) When the switch handle of the manual valve 5 acts on the arc-shaped short side of the convex surface of the decagonal faceplate again, the air pressure change process of sequence number 13 to sequence number 20 and the adjustment process of the carbon fiber warp tension are repeated.

[0044] The utility model can periodically adjust the yarn feeding tension to a balanced state; the balanced tension can be freely adjusted, and the air pressure can be adjusted according to the actual number of warp yarns, so as to adjust the sinking speed of the balance roller, thereby accurately adjusting the yarn feeding tension; the utility model can solve cloth surface defects such as hanging warp, loose warp, and strip shadows, and reduce abnormal processing labor costs and product quality losses; the utility model can greatly reduce the damage of the warp yarn to the warp beam and the warp beam pressure roller, and extend the service life of the loom roller.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A yarn feeding device, characterized in that: include: A first roller (7) and a second roller (8) are arranged in sequence along the feeding direction of the carbon fiber warp yarn; a balancing roller (6) disposed between the first roller (7) and the second roller (8), wherein the carbon fiber warp yarns sequentially pass around the upper surface of the first roller (7), the lower surface of the balancing roller (6), and the upper surface of the second roller (8) along the yarn feeding direction, and the first roller (7) and the second roller (8) are driven to rotate clockwise and the balancing roller (6) to rotate counterclockwise by friction force; A pressure regulating mechanism for driving the balancing roller (6) to perform reciprocating motion in a direction perpendicular to the feeding direction of the carbon fiber warp yarns, so as to regulate the tension of the carbon fiber warp yarns.

2. The yarn feeding device according to claim 1, characterized in that: The axes of the first roller (7), the second roller (8) and the balancing roller (6) are respectively parallel, and the projections of the first roller (7), the second roller (8) and the balancing roller (6) in the direction of their axes are in a "V" shape.

3. The yarn feeding device according to claim 1, characterized in that: The pressure regulating mechanism comprises: Slide rail (9); a sliding block (10) slidably connected to the sliding rail (9), the balancing roller (6) being rotatably connected to the sliding block (10); A power unit for driving the slider (10) to reciprocate along the slide rail (9).

4. The yarn feeding device according to claim 3, characterized in that: The power unit comprises a cylinder (1), a piston rod (11) of the cylinder (1) being connected to the slider (10), and a rodless chamber of the cylinder (1) being connected to a gas source via a gas pipeline.

5. The yarn feeding device according to claim 4, characterized in that: Also includes: An air pressure regulating valve (3), an air valve master switch (2) and a manual valve (5); The air inlet of the air pressure regulating valve (3) is connected to the air source via a gas pipeline, the air outlet of the air pressure regulating valve (3) is connected to the air inlet of the air valve master switch (2) via a gas pipeline, and the air outlet of the air valve master switch (2) is respectively connected to the air inlet of the manual valve (5) and the rodless chamber of the cylinder (1) via gas pipelines; The manual valve (5) is used to discharge the compressed air output from the air outlet of the air valve master switch (2) at a set frequency.

6. The yarn feeding device according to claim 5, characterized in that: It also comprises a polygonal faceplate (4), which is coaxially connected to the first roller (7) and rotates synchronously with the first roller (7); the edge of the polygonal faceplate (4) is slidably connected to the switch handle of the manual valve (5).

7. The yarn feeding device according to claim 5, characterized in that: The manual valve (5) and the gas valve master switch (2) are respectively two-position three-way valves.

8. The yarn feeding device according to claim 1, characterized in that: The first roller (7) and the second roller (8) are smooth steel rollers, and the surface of the balancing roller (6) is provided with polyurethane material.

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