A back pressure adjustment control mechanism used on a carbon fiber receiving machine

Abstract

The present invention discloses a back pressure adjustment control mechanism for use on a carbon fiber receiving machine, comprising a carbon fiber receiving machine frame, a yarn tube arranged on the carbon fiber receiving machine frame, and a back pressure adjustment control mechanism, wherein the back pressure adjustment control mechanism consists of a pressure seat assembly and a back pressure control cylinder, wherein the pressure seat assembly comprises a bracket and a support tube assembly, wherein one side of the support tube assembly is in close contact with the yarn tube, and the other side is mounted on the bracket, wherein the bracket is mounted in a guide rail arranged on the frame to form a sliding pair with the frame, wherein the top of the bracket is connected to the back pressure control cylinder, and the bracket is driven up and down by the back pressure control cylinder to achieve close contact and separation between the support tube assembly and the yarn tube, and the present invention has the advantages of simple structure, firmness and reliability, stable operation, flexibility and convenience, and wide application range.

Description

Technical Field

[0001] The invention belongs to the technical field of carbon fiber collecting machines and relates to a back pressure adjustment control mechanism used on a carbon fiber collecting machine. Background Art

[0002] In the actual production process, it is found that the pressure (back pressure) of the pressure seat assembly on the carbon fiber yarn tube has an important influence on the molding quality of the carbon fiber yarn tube, especially the flatness quality of the end surface of the yarn tube. In the existing carbon fiber receiving machine, the back pressure adjustment is collectively adjusted manually, and cannot be adjusted by a single spindle or according to a pre-set rule. This requires that the weight of the pressure seat assembly of each spindle of the receiving machine is the same. As the diameter of the yarn tube increases, the change law of the resistance of the pressure seat assembly to move upward is required to be consistent or controllable. In practice, it is found that the resistance of the upward movement of the pressure seat assembly is closely related to the quality of the parts and the installation accuracy of the kinematic pair; the movement resistance of each spindle in actual operation varies greatly, which is a quality factor that is difficult to control. In order to improve the product quality of the carbon fiber yarn tube, it is necessary to innovate the mechanism to achieve that the pressure of the pressure seat assembly on the carbon fiber yarn tube is consistent for each spindle or can be automatically adjusted or controlled according to the pre-set. To this end, a back pressure adjustment control mechanism used on the carbon fiber receiving machine is designed to overcome the above problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a back pressure adjustment control mechanism for use on a carbon fiber winding machine which has a simple structure, is firm and reliable, operates stably, is flexible and convenient, and has a wide overall range of applicability.

[0004] The present invention is implemented through the following technical scheme: a back pressure adjustment control mechanism used on a carbon fiber receiving machine, which includes a frame of the carbon fiber receiving machine, a yarn tube arranged on the frame of the carbon fiber receiving machine, and a back pressure adjustment control mechanism, wherein the back pressure adjustment control mechanism is composed of a pressure seat assembly and a back pressure control cylinder, the pressure seat assembly includes a bracket and a support tube assembly, one side of the support tube assembly is close to the yarn tube, and the other side is installed on the bracket; the bracket is installed in a guide rail arranged on the frame to form a sliding pair with the frame; the top of the bracket is connected to the back pressure control cylinder, and the back pressure control cylinder drives the bracket up and down to achieve close contact and separation between the support tube assembly and the yarn tube.

[0005] Preferably: the back pressure control cylinder is arranged on the frame at an angle, a piston rod is installed inside the cylinder, the end of the piston rod is rotatably connected to the top of the bracket, a rotating pair H is formed at the connection, and the bottom of the back pressure control cylinder is connected to the frame, a rotating pair F is formed at the connection, and the inclination of the entire back pressure control cylinder is adjusted by extending and retracting the piston rod up and down, and the rotating pair H and the rotating pair F, so as to achieve close contact and separation between the support tube assembly and the yarn tube.

[0006] Preferably: the support tube assembly can move in and out relative to the bracket, but cannot rotate relative to it; the support tube assembly is composed of a pressure roller, a roller, a slider, a grooved drum, a grooved drum support tube, a pressure roller support, a core shaft, an eccentric sleeve, and a concentric sleeve, wherein the grooved drum is installed in the grooved drum support tube, and one end of the pressure roller support is respectively installed on both sides of the grooved drum support tube, and the other end of the pressure roller support is installed with a core shaft through an eccentric sleeve and a concentric sleeve, and the core shaft is connected to the pressure roller through a bearing, and the pressure roller can rotate around the core shaft, and the outer circle of the pressure roller is in rolling contact with the outer circle of the yarn tube; the grooved drum support tube is provided with a slideway V on the side facing the yarn tube, one end of the slider passes through the slideway V and is connected to the grooved drum inside the grooved drum support tube through a bearing, forming a spiral motion pair U therewith, and slides on the slideway V of the grooved drum support tube through a bearing, and a plurality of groups of rollers are installed at the end of the slider, which are connected to the slider at different angles, and each group of rollers has at least 2, and the carbon fiber tow is wound on the yarn tube after being limited or guided by the rollers.

[0007] Preferably, one side of the core shaft is connected to a concentric sleeve, which is fixedly connected to one of the pressure roller supports; the other side of the core shaft is connected to an eccentric sleeve, which is fixedly connected to the other pressure roller support; the fixed position between the eccentric sleeve and the pressure roller support can be adjusted circumferentially, and rotating the eccentric sleeve can change the parallelism between the axis line of the pressure roller and the axis line of the yarn tube.

[0008] Preferably, there are multiple groups of rollers, each group has at least two rollers, one of which has three rollers, which are respectively installed at the ends of the sliders through bearings and pins, and arranged in a stepped manner from top to bottom so that the rollers and the sliders form a rotating pair, and the carbon fiber tow is S-shaped and passed through the three rollers.

[0009] Preferably, a spiral groove is formed on the groove drum, and one end of the sliding block is located in the spiral groove on the groove drum, forming a spiral motion pair U.

[0010] Preferably: the back pressure control cylinder is provided with two upper and lower air inlets and outlets, wherein the upper air inlet and outlet is the S end and the lower air inlet and outlet is the R end, wherein the S end is located on the extending side of the piston rod, and the R end is located at the bottom of the back pressure control cylinder; the S end is connected to the air inlet and outlet on the first three-way solenoid valve through the first air pipe, and the first three-way solenoid valve is also provided with an air inlet and an air outlet connected to the outside, and the air outlet is an exhaust hole; the R end is connected to the air inlet and outlet T3 on the shuttle valve through the second air pipe, and the air inlet and outlet T1 on the shuttle valve is connected to the air inlet and outlet on the second three-way solenoid valve through the third air pipe; the air inlet T2 on the shuttle valve is connected to the air outlet of the proportional valve through the fourth air pipe; the air inlet on the proportional valve, the air inlet on the second three-way solenoid valve, and the air inlet on the first three-way solenoid valve are respectively connected to the high-pressure air source; the second three-way solenoid valve is also provided with an air outlet, which is an exhaust port.

[0011] The beneficial effects of the present invention are as follows:

[0012] The back pressure adjustment and control mechanism used on the carbon fiber receiving machine designed by the present invention adopts a proportional valve single spindle to automatically adjust and control the back pressure instead of manual collective control of the back pressure to operate, which greatly improves product quality and reduces the difficulty of equipment installation and debugging. The present invention can be used at the end of the carbon fiber production line to wind the finished carbon fiber into a carbon fiber yarn tube. It can also be used in the carbon fiber rewinding process to divide large packages of carbon fiber into small packages of carbon fiber, and can be used in similar processes for other fibers. The overall scope of application is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural cross-sectional view (initial position) of the present invention.

[0014] Figure 2 It is a structural cross-sectional view of the present invention (full cylinder position).

[0015] Figure 3 for Figure 1 yy cross-sectional diagram.

[0016] Figure 4 for Figure 3 XX cross-section diagram.

[0017] Figure 5 This is the gas circuit control schematic diagram of the back pressure control cylinder. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "up", "down", "left", "right", "inside", "outside", "horizontal" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1-2As shown, a back pressure adjustment control mechanism used on a carbon fiber receiving machine comprises a frame 23 of the carbon fiber receiving machine, a yarn tube 1 arranged on the frame 23 of the carbon fiber receiving machine, and a back pressure adjustment control mechanism, wherein the back pressure adjustment control mechanism consists of a pressure seat assembly 25 and a back pressure control cylinder 7, the pressure seat assembly 25 comprises a bracket 5 and a support tube assembly 24, one side of the support tube assembly 24 is close to the yarn tube 1, and the other side is installed on the bracket 5, the bracket 5 is installed in a guide rail arranged on the frame 23, and forms a sliding pair P, Q with the frame 23, and the top thereof is connected to the back pressure control cylinder 7, and driven by the back pressure control cylinder 7, the bracket 5 rises and falls, so as to realize the close contact and separation of the support tube assembly 24 and the yarn tube 1.

[0021] The back pressure control cylinder 7 is arranged obliquely on the frame 23, and a piston rod 6 is installed therein. The end of the piston rod 6 is rotatably connected to the top of the bracket 5, and a rotating pair H is formed at the connection. The bottom of the back pressure control cylinder 7 is connected to the frame 23, and a rotating pair F is formed at the connection. The inclination of the entire back pressure control cylinder 7 is adjusted by the up and down extension and contraction of the piston rod 6 in the back pressure control cylinder 7, and the rotating pair H and the rotating pair F, so as to achieve the close contact and separation of the support tube assembly 24 and the yarn tube 1.

[0022] The support tube assembly 24 can move in and out relative to the bracket 5, but the two cannot rotate relative to each other; the support tube assembly 24 is composed of a pressure roller 2, a roller 3, a slider 4, a grooved drum 8, a grooved drum support tube 9, a pressure roller support 10, a core shaft 11, an eccentric sleeve 12, and a concentric sleeve 13, wherein the grooved drum 8 is installed in the grooved drum support tube 9, and one end of two pressure roller supports 10 are respectively installed on both sides of the grooved drum support tube 9, and the other end of the pressure roller support 10 is installed with a core shaft 11 through a concentric sleeve 13 and an eccentric sleeve 12, and a pressure roller 2 is installed on the core shaft 11 through a bearing, so that the pressure roller 2 surrounds the core shaft 11 The outer circle of the pressure roller 2 is in rolling contact with the outer circle of the yarn drum 1; a slideway V is provided on the side of the grooved drum support tube 9 facing the yarn drum 1, and one end of the slider 4 passes through the slideway V and is connected to the grooved drum 8 inside the grooved drum support tube 9 through a bearing, forming a spiral motion pair U therewith, and slides left and right on the grooved drum support tube 9 under the constraint of the slideway V. Multiple groups of rollers 3 are installed at the end of the slider 4, which are connected to the slider 4 at different angles, and each group of rollers 3 has at least 2, and carbon fiber tows are wound on the rollers, and the carbon fiber tows are wound on the yarn drum 1 after being limited and guided by multiple groups of rollers 3. These rollers play a role in limiting and guiding the movement of the carbon fiber tows, and cooperate with the movement of the grooved drum to allow the carbon fiber tows to be wound on the yarn drum and wound into a carbon fiber yarn drum according to a predetermined rule.

[0023] like Figure 3-4As shown, one side of the core shaft 11 is connected to the concentric sleeve 13, and the concentric sleeve 13 is fixedly connected to the pressure roller support 10; the other side of the core shaft 11 is connected to the eccentric sleeve 12, and the eccentric sleeve 12 is fixedly connected to the pressure roller support 10. The circumferential fixed position between the eccentric sleeve 12 and the pressure roller support 10 can be adjusted, and rotating the eccentric sleeve 12 can change the parallelism between the axis line of the pressure roller 2 and the axis line of the yarn tube 1.

[0024] The rollers 3 are arranged in multiple groups, each group has at least two rollers, and one group has three rollers, which are respectively installed at the ends of the slider 4 through bearings and pins, and arranged in a stepped manner from top to bottom, so that the rollers 3 and the slider 4 form a rotating pair, and the rotation centers are respectively located at C, D, and E. The carbon fiber tow is S-shaped and passed between the three rollers, and enters the yarn tube 1 for winding and forming.

[0025] The groove drum 8 is provided with a spiral groove, and one end of the slider 4 is located in the spiral groove on the groove drum 8 to form a spiral motion pair.

[0026] like Figure 5 As shown, the back pressure control cylinder 7 is provided with two upper and lower air inlets and outlets, wherein the upper air inlet and outlet is the S end and the lower air inlet and outlet is the R end, wherein the S end is located at the extended side of the piston rod 6, and the R end is located at the bottom of the back pressure control cylinder 7, the S end is connected to the air inlet and outlet W2 on the first three-way solenoid valve 22 through the first air pipe 18, and the first three-way solenoid valve 22 is also provided with an air inlet W1 and an air outlet W3 connected to the outside, the R end is connected to the air inlet and outlet T3 on the shuttle valve 14 through the second air pipe 19, and the air inlet W1 and the air outlet W3 connected to the outside are connected to the shuttle valve 14 through the second air pipe 19. The air inlet and outlet T1 are connected to the air inlet and outlet K2 on the second three-way solenoid valve 15 through the third air pipe 20; the air inlet T2 on the shuttle valve 14 is connected to the air outlet Z2 of the proportional valve 16 through the fourth air pipe 21; the air inlet Z1 on the proportional valve 16, the air inlet K1 on the second three-way solenoid valve 15, and the air inlet W1 on the first three-way solenoid valve 22 are respectively connected to the high-pressure air source, and the second three-way solenoid valve 15 is also provided with an air outlet K3, and the first three-way solenoid valve 22 is also provided with an air outlet W3, and the air outlet K3 and the air outlet W3 are both exhaust ports. All air inlets and outlets can be bidirectionally ventilated, that is, they can take in air and also can exhaust air; all air inlets can only take in air, and all air outlets can only exhaust air. The airflow direction is shown in Figure 5 shown.

[0027] The working principle of the present invention is as follows:

[0028] After power is turned on, the motor (wire moving motor) drives the groove drum 8 to rotate, driving the slider 4 to move in the spiral groove of the groove drum 8. Since a part of the slider 4 is located in the slideway V of the groove drum support tube 9, the groove drum 8 rotates, driving the slider 4 to move back and forth along the slideway V on the groove drum support tube 9, driving the carbon fiber yarn 17 to move along the surface of the yarn drum 1. At the same time, the winding motor drives the yarn drum 1 to rotate clockwise through the transmission mechanism (see Figure 1 , Figure 2 ), at the starting moment, the yarn end of the carbon fiber yarn 17 is fixedly connected to the supporting shaft of the yarn tube 1 through a special structure, and is wound into shape under the joint action of the two movements to form a carbon fiber yarn tube 1.

[0029] The weight of the pressure seat assembly 25 acts on the surface of the yarn bobbin 1 through the pressure roller 2 , forming a back pressure on the winding of the yarn bobbin 1 , which plays a key role in the molding quality of the yarn bobbin 1 .

[0030] When the winding of the yarn tube 1 is completed, air is taken in through the air inlet K1 on the second three-way solenoid valve 15, and air is taken in through the third air pipe 20 to the air inlet and outlet T1 on the shuttle valve 14, and air is taken in through the second air pipe 19 to the air inlet and outlet R in the back pressure control cylinder 7. The air pressure pushes the pressure seat assembly 25 upward through the piston rod 6, and the pressure roller 2 is separated from the yarn tube 1. At the same time, the air in the back pressure control cylinder 7 is discharged through the air inlet and outlet S, the air inlet and outlet W2 on the first three-way solenoid valve 22, and the air outlet W3. When the bobbin 1 needs to be wound again, high-pressure air is inputted into the air inlet W1 on the first three-way solenoid valve 22, and the piston rod 6 is pushed downward through the first three-way solenoid valve 22, the first air pipe 18, and the air inlet and outlet S on the back pressure control cylinder 7, driving the pressure seat assembly 25 to move until the pressure roller 2 contacts the bobbin 1. At the same time, the air in the back pressure control cylinder 7 is discharged through the air inlet and outlet R, T3 and T1 on the shuttle valve 14, and K2 and K3 on the second three-way solenoid valve 15. Then the wire moving motor drives the grooved roller 8 to move, and the winding motor drives the bobbin 1 to move, and winding begins.

[0031] During normal winding, high-pressure air passes through the proportional valve 16, the fourth air pipe 21, the air inlet T2 on the shuttle valve 14, the air inlet and outlet T3 on the shuttle valve 14, the second air pipe 19, and the air inlet and outlet R, exerting a thrust on the piston rod 6, reducing the pressure of the pressure seat assembly 25 on the yarn tube 1, but does not push the piston rod 6 upward to ensure that the pressure roller 2 is in contact with the yarn tube 1 and has a certain pressure. By adjusting the control parameters of the proportional valve 16, the air pressure at the air outlet Z2 of the proportional valve 16 is accurately controlled, and through the shuttle valve 14, the upward air pressure in the back pressure control cylinder 7 is accurately controlled, thereby achieving accurate control of the winding back pressure of the yarn tube 1.

[0032] During the normal winding process, as the winding diameter of the yarn tube 1 increases, the yarn tube 1 pushes the pressure seat assembly 25 to move along the guide rail PQ through the pressure roller 2, and the piston rod 6 in the back pressure control cylinder 7 moves upward. The air inlet and outlet S pass through the first air pipe 18 and the first three-way solenoid valve 22, and exhaust is discharged from the air outlet W3. Air is supplemented through the air inlet Z1 on the proportional valve 16, the fourth air pipe 21, the air inlet T2 on the shuttle valve 14, the air inlet and outlet T3, the second air pipe 19, and the air inlet and outlet R, so that the air pressure in the back pressure control cylinder 7 operates according to a preset rule.

[0033] When the yarn tube 1 is wound and needs to be replaced, the support tube assembly 24 moves relative to the bracket 5 under the push of other power, and cooperates with other mechanisms to complete the yarn end fixing and carbon fiber yarn shearing actions.

[0034] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A back pressure adjustment control mechanism used on a carbon fiber receiving machine, comprising a frame (23) of the carbon fiber receiving machine, a yarn tube (1) arranged on the frame (23) of the carbon fiber receiving machine, and the back pressure adjustment control mechanism, characterized in that: The back pressure adjustment control mechanism is composed of a pressure seat assembly (25) and a back pressure control cylinder (7); the pressure seat assembly (25) includes a bracket (5) and a support tube assembly (24); one side of the support tube assembly (24) is in close contact with the yarn tube (1), and the other side is mounted on the bracket (5); the bracket (5) is mounted in a guide rail arranged on the frame (23) to form a sliding pair with the frame (23); the top of the bracket (5) is connected to the back pressure control cylinder (7); the back pressure control cylinder (7) drives the bracket (5) to rise and fall, thereby achieving close contact and separation between the support tube assembly (24) and the yarn tube (1). The support tube assembly (24) can move in and out relative to the bracket (5), but cannot rotate relative to the bracket (5); the support tube assembly (24) is composed of a pressure roller (2), a roller (3), a slider (4), a grooved drum (8), a grooved drum support tube (9), a pressure roller support (10), a core shaft (11), an eccentric sleeve (12), and a concentric sleeve (13); wherein the grooved drum (8) is installed in the grooved drum support tube (9), one end of the pressure roller support (10) is installed on both sides of the grooved drum support tube (9), and the other end of the pressure roller support (10) is installed with the core shaft (11) through the eccentric sleeve (12) and the concentric sleeve (13). The core shaft (11) is connected to the pressure roller (2) via a bearing. The pressure roller (2) can rotate around the core shaft (11). The outer circle of the pressure roller (2) is in rolling contact with the outer circle of the yarn tube (1). The grooved drum support tube (9) is provided with a slideway V on the side facing the yarn tube (1). One end of the slider (4) passes through the slideway V and is connected to the grooved drum (8) inside the grooved drum support tube (9) via a bearing to form a spiral motion pair U. The slider (4) slides on the slideway V of the grooved drum support tube (9) via a bearing. The end of the slider (4) is provided with a plurality of groups of rollers (3) which are connected to the slider (4) at different angles. Each group of rollers (3) There are at least two of them, and the carbon fiber tow is limited or guided by a roller (3) and then wound onto a yarn tube (1) to form a yarn, one side of the core shaft (11) is connected to a concentric sleeve (13), and the concentric sleeve (13) is fixedly connected to one of the pressure roller supports (10); the other side of the core shaft (11) is connected to an eccentric sleeve (12), and the eccentric sleeve (12) is fixedly connected to another pressure roller support (10), and the relative position between the eccentric sleeve (12) and the pressure roller support (10) in the circumferential direction can be adjusted, and the rotation of the eccentric sleeve (12) can change the parallelism between the axis center line of the pressure roller (2) and the axis center line of the yarn tube (1).

2. The back pressure adjustment control mechanism used on the carbon fiber receiving machine according to claim 1, characterized in that: The back pressure control cylinder (7) is arranged obliquely on the frame (23), and a piston rod (6) is installed therein. The end of the piston rod (6) is rotatably connected to the upper part of the bracket (5), and a rotation pair H is formed at the connection. The bottom of the back pressure control cylinder (7) is connected to the frame (23), and a rotation pair F is formed at the connection. The inclination of the entire back pressure control cylinder (7) is adjusted by the upward and downward extension of the piston rod (6) and the rotation pair H and the rotation pair F, so that the support tube assembly (24) and the yarn tube (1) can be closely attached to and separated from each other.

3. The back pressure adjustment control mechanism used on the carbon fiber receiving machine according to claim 1, characterized in that: The rollers (3) are provided in a plurality of groups, each group having at least two rollers, and one group having three rollers (3) which are respectively mounted on the ends of the sliders (4) via bearings and pins and arranged in a stepped manner from top to bottom, so that the rollers (3) and the sliders (4) form a rotating pair, and the carbon fibers are inserted between the three rollers (3) in an S shape.

4. The back pressure adjustment control mechanism used on the carbon fiber receiving machine according to claim 1, characterized in that: The grooved cylinder (8) is provided with a spiral groove, and one end of the slider (4) is located in the spiral groove on the grooved cylinder (8), forming a spiral motion pair.

5. The back pressure adjustment control mechanism used on the carbon fiber receiving machine according to claim 1, characterized in that: The back pressure control cylinder (7) is provided with two upper and lower air inlets and outlets, wherein the upper air inlet and outlet is the S end and the lower air inlet and outlet is the R end, wherein the S end is located on the extended side of the piston rod (6), and the R end is located at the bottom of the back pressure control cylinder (7), the S end is connected to the air inlet and outlet on the first three-way solenoid valve (22) through the first air pipe (18), and the first three-way solenoid valve (22) is also provided with an air inlet and an air outlet connected to the outside, the R end is connected to the air inlet and outlet T3 on the shuttle valve (14) through the second air pipe (19), and the air inlet and outlet T1 on the shuttle valve (14) is connected to the air inlet and outlet T3 on the shuttle valve (14) through the third The air pipe (20) is connected to the air inlet and outlet on the second three-way solenoid valve (15); the air inlet T2 on the shuttle valve (14) is connected to the air outlet of the proportional valve (16) through the fourth air pipe (21); the air inlet on the proportional valve (16), the air inlet on the second three-way solenoid valve (15), and the air inlet on the first three-way solenoid valve (22) are respectively connected to a high-pressure air source, the second three-way solenoid valve (15) is also provided with an air outlet, the first three-way solenoid valve (22) is also provided with an air outlet, and the air outlets on the first three-way solenoid valve (22) and the second three-way solenoid valve (15) are both exhaust ports.

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