Automatic winding machine

Abstract

The present invention discloses an automatic winding machine, comprising a supporting rotating mechanism, a rotating driving mechanism, a feeding mechanism and a machine tool, wherein the machine tool consists of a rotating machine tool and a feeding machine tool, the rotating machine tool and the feeding machine tool are arranged in parallel and connected by a plurality of reinforcing ribs, the rotating driving mechanism is fixedly connected to one end of the rotating machine tool to support one end of a mold connecting shaft and drive it to rotate, the supporting rotating mechanism can be slidably arranged on the rotating machine tool along the length direction and is used to rotationally support the other end of the mold connecting shaft, the feeding mechanism can be slidably arranged on the feeding machine tool to unwind prepreg, the feeding mechanism is divided into two groups, the supporting rotating mechanism comprises a supporting platform slidably installed on the rotating machine tool, the top of the supporting platform is fixedly connected with a supporting frame, the supporting frame is a U-shaped structure, and two first rollers for supporting the mold connecting shaft are installed on the supporting frame.

Description

Technical Field

[0001] The invention relates to composite material processing equipment, in particular to an automatic winding machine. Background Art

[0002] Cylindrical composite materials are a very important type of composite products. They are widely used in the fields of vehicles, ships, aerospace, etc., and have very high application advantages. For example, the specific stiffness, specific strength, corrosion resistance and wear resistance of composite rotating parts are greatly improved compared with traditional metal rotating parts. Moreover, they have strong vibration attenuation ability, low noise, non-magnetic conductivity, and strong radial and axial displacement compensation ability.

[0003] At present, the common method for making cylindrical composite materials is winding molding, which is a winding molding process that winds the prepreg onto a cylindrical mold. The prepreg is a combination of continuous fibers or fabrics impregnated with a resin matrix under strictly controlled conditions to form a resin matrix and reinforcement. It is an intermediate material for making composite materials. Winding molding is mainly divided into wet winding and dry winding. However, the disadvantages of wet winding are large, including large resin waste, poor operating environment, difficult to control resin content and finished product quality, and fewer resin varieties available for wet winding. In comparison, dry winding can strictly control the resin content (accurate to within 2%), the operating environment is dry and there is no waste of raw materials, the weight of the product can be accurately controlled, and the production efficiency is high.

[0004] However, in the prior art, dry winding is mainly performed by manual laying or winding of prepreg, which has low work efficiency and poor splicing quality. Therefore, the manual dry winding process is not suitable for the production of large products. Summary of the invention

[0005] The object of the present invention is to provide an automatic winding machine which has a simple structure, is easy to use, has high winding efficiency, and can be applied to large cylindrical composite materials, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic winding machine includes a supporting rotating mechanism, a rotating driving mechanism, a feeding mechanism and a machine tool, wherein the machine tool is composed of a rotating machine tool and a feeding machine tool, wherein the rotating machine tool and the feeding machine tool are arranged in parallel and connected by a plurality of reinforcing ribs, wherein the rotating driving mechanism is fixedly connected to one end of the rotating machine tool to support one end of a mold connecting shaft and drive it to rotate, wherein the supporting rotating mechanism can be slidably arranged on the rotating machine tool along the length direction and is used to rotationally support the other end of the mold connecting shaft, wherein the feeding mechanism can be slidably arranged on the feeding machine tool to unwind prepreg, and wherein the feeding mechanism is divided into two groups.

[0008] A further improvement is that the supporting rotating mechanism comprises a supporting platform slidably mounted on the rotating machine tool, a supporting frame is fixedly connected to the top of the supporting platform, the supporting frame is a U-shaped structure, and two first rollers for supporting the mold connecting shaft are mounted on the supporting frame.

[0009] A further improvement is that it also includes a skeleton and a pressure wheel, the skeleton is arranged on the support frame, the pressure wheel can slide up and down on the skeleton through a first driving mechanism, the pressure wheel is axially parallel to the first roller, and the pressure wheel and the two first rollers are distributed in an isosceles triangle.

[0010] A further improvement is that one end of the skeleton is rotatably connected to the support frame, and the other end of the skeleton is buckled and connected to the support frame via a locking mechanism.

[0011] A further improvement is that a limiting mechanism is also provided on the support platform, which can lock the support platform at any position. The limiting mechanism includes a limiting block, a through hole is provided on the limiting block, a limiting screw is passed through the through hole, and a plurality of limiting screw holes are provided on the rotary machine tool for the limiting screw to pass through.

[0012] A further improvement is that the rotary drive mechanism includes a first bracket fixedly connected to one end of the rotary machine tool, a roller seat installed on the first bracket and a flange for connecting the mold connecting shaft, two second rollers are rotatably installed on the roller seat, the flange is rotatably installed on the first bracket through a rotating shaft assembly, and the first bracket is also provided with a second drive mechanism for driving the flange to rotate.

[0013] A further improvement is that the feeding mechanism includes a second bracket, a tensioning sleeve, a yarn guide assembly and a traveling mechanism, the second bracket is slidably mounted on the feeding machine bed, the tensioning sleeve and the yarn guide assembly are rotatably mounted on the second bracket, and the traveling mechanism is used to drive the second bracket to slide on the feeding machine bed.

[0014] A further improvement is that the yarn guide assembly includes two yarn guide wheels and a yarn guide roller, the yarn guide wheels and the yarn guide roller are axially parallel to the tensioning sleeve and are rotatably mounted on the second bracket, the two yarn guide wheels are located below the yarn guide roller, and the yarn guide wheels and the yarn guide roller are distributed in an isosceles triangle.

[0015] A further improvement is that it also includes a pressure detection sensor, which is installed on the yarn guide roller to detect the feeding tension of the prepreg, and the rotation speed of the tensioning sleeve is controlled by the feeding tension.

[0016] A further improvement is that it also includes two yarn collection rollers for removing and recovering the prepreg protective film, the yarn collection rollers are axially parallel to the tensioning sleeve and are rotatably mounted on the second bracket, the yarn collection rollers are located on the same side and distributed longitudinally, and the two yarn collection rollers and the tensioning sleeve are distributed in an isosceles triangle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The supporting rotating mechanism is slidably installed on the rotating machine tool, so that the distance between the supporting rotating mechanism and the rotating driving mechanism can be adjusted, so that it can adapt to molds of different lengths for winding operations, improve the versatility of the equipment, and at the same time meet the winding of large cylindrical composite materials above M, thereby improving work efficiency.

[0019] 2. By setting two sets of feeding mechanisms on the feeding machine, the same or different types of prepregs are installed on the two feeding mechanisms, so that the two feeding mechanisms can move individually or in coordination to meet the winding of single or multiple prepregs and meet the diversified winding needs of product composite materials.

[0020] 3. By arranging two first rollers and a clamping wheel on the supporting rotating mechanism, and the clamping wheel and the two first rollers are distributed in an isosceles triangle, the mold connecting shaft is clamped from the top by the clamping wheel, thereby realizing three-point fixation of the mold connecting shaft, effectively preventing it from vibrating during rotation, improving the stability of mold rotation, and making the prepreg winding more uniform.

[0021] 4. The skeleton on the supporting rotating mechanism is rotatably connected to one end of the supporting frame, and the other end of the skeleton is buckled and connected to the supporting frame through a latch mechanism, thereby realizing the rapid loading and unloading of the mold connecting shaft, thereby reducing the difficulty of operation and improving work efficiency.

[0022] 5. The feeding mechanism is provided with a bracket, a tensioning sleeve and a yarn guide assembly. The setting of the tensioning sleeve facilitates the installation of the prepreg roll. With the cooperation of the yarn guide assembly, the prepreg is guided and tensioned, thereby realizing the orderly unwinding of the prepreg and improving the uniformity of the mold winding.

[0023] 6. Two sets of yarn-collecting rollers are rotatably installed on the feeding mechanism, and the two yarn-collecting rollers and the tensioning sleeve are distributed in an isosceles triangle. Through the coordinated use of the yarn-collecting rollers, the prepreg protective film can be evenly torn and rolled up for recovery without affecting the unwinding of the prepreg, further improving the practicality of the equipment.

[0024] 7. By installing a pressure detection sensor on the yarn guide roller to detect the unwinding tension of the prepreg, the rotation speed of the tension sleeve is controlled to match the rotation speed of the mold, so that the prepreg is always kept in a taut state, further ensuring its uniform winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an automatic winding machine;

[0026] Figure 2 It is a structural schematic diagram of the supporting rotating mechanism in the automatic winding machine;

[0027] Figure 3 It is a side view of a supporting rotating mechanism in an automatic winding machine;

[0028] Figure 4 It is a three-dimensional diagram of a rotary drive mechanism in an automatic winding machine;

[0029] Figure 5 It is a front view of the rotary drive mechanism in the automatic winding machine;

[0030] Figure 6 It is a three-dimensional diagram of the feeding mechanism in the automatic winding machine;

[0031] Figure 7 This is the front view of the feeding mechanism in the automatic winding machine;

[0032] In the figure: a supporting rotating mechanism 100, a supporting platform 101, a latching mechanism 102, a locking block 103, a first roller 104, a screw rod 105, a clamping wheel 106, a hand wheel 107, a frame 108, and a supporting frame 109;

[0033] Rotation drive mechanism 200, first bracket 201, reduction motor 202, chain 203, sprocket 204, shaft seat 205, rotating shaft 206, flange 207, second roller 208, roller seat 209;

[0034] Rotary machine tool 300;

[0035] Feeding mechanism 400, second bracket 401, tension sleeve 402, yarn guide roller 403, yarn collection roller 404, yarn guide wheel 405, servo motor 406, pulley assembly 407, box body 408, magnetic powder brake 409, gear 410;

[0036] Feeding machine 500, control cabinet 600, reinforcing ribs 700, and mold 800. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1 In an embodiment of the present invention, an automatic winding machine includes a supporting rotating mechanism 100, a rotating driving mechanism 200, a feeding mechanism 400 and a machine tool, wherein the machine tool is composed of a rotating machine tool 300 and a feeding machine tool 500, the rotating machine tool 300 and the feeding machine tool 500 are arranged in parallel and connected by a plurality of reinforcing ribs 700, the rotating driving mechanism 200 is fixedly connected to one end of the rotating machine tool 300, the supporting rotating mechanism 100 can be slidably arranged on the rotating machine tool 300 along the length direction, the feeding mechanism 400 can be slidably arranged on the feeding machine tool 500, and the feeding mechanism 40 0 is two groups, the supporting rotating mechanism 100 is used to rotationally support one end of the mold 800, the rotating mechanism is used to support the other end of the mold 800 and can drive it to rotate, the feeding mechanism 400 is used to unwind and guide the prepreg, and the supporting rotating mechanism 100 is slidably installed on the rotating machine tool 300, so that the distance between the supporting rotating mechanism 100 and the rotating driving mechanism 200 can be adjusted, so as to adapt to the winding operation of molds 800 of different lengths, improve the versatility of the equipment, and at the same time can meet the winding of large cylindrical composite materials of more than 5M, thereby improving work efficiency.

[0039] See also Figure 2 , Figure 3 The supporting rotating mechanism 100 includes a supporting platform 101 slidably mounted on the rotating machine tool 300, and a supporting frame 109 is fixedly connected to the top of the supporting platform 101. The supporting frame 109 is a U-shaped structure, and two first rollers 104 for supporting the mold connecting shaft are installed on the supporting frame 109. Preferably, the cross-section of the supporting platform 101 is a trapezoidal structure, that is, the width of the supporting platform 101 gradually increases from top to bottom to improve the structural strength of the supporting platform 101, thereby further improving its bearing capacity.

[0040] In order to press the top of the mold connecting shaft to prevent the mold 800 from vibrating during rotation, a skeleton 108 and a clamping wheel 106 are also included. The skeleton 108 is arranged on the support frame 109. The clamping wheel 106 can slide up and down on the skeleton 108 through a first driving mechanism. The clamping wheel 106 is axially parallel to the first roller 104, and the clamping wheel 106 and the two first rollers 104 are distributed in an isosceles triangle. The mold connecting shaft is pressed from the top by the clamping wheel 106, thereby realizing three-point fixation of the mold connecting shaft, effectively preventing it from vibrating during rotation, improving the rotation stability of the mold 800, and making the prepreg winding more uniform.

[0041] In this embodiment, specifically, the first driving mechanism includes a screw rod 105, a nut sleeve and a T-shaped key, the nut sleeve is rotatably mounted on the frame 108, the screw rod 105 is threadedly connected and penetrates the nut sleeve, the screw rod 105 is provided with a T-shaped key for radial limiting, the frame 108 is provided with a keyway matching the T-shaped key, the clamping wheel 106 is rotatably mounted on the bottom end of the screw rod 105, and the nut sleeve is coaxially fixed with a hand wheel 107. When in use, the hand wheel 107 is rotated to drive the nut sleeve to rotate, so that the screw rod 105 slides up and down, and then the clamping wheel 106 slides up and down to achieve the clamping of the mold connecting shaft.

[0042] Preferably, in order to facilitate the loading and unloading of the mold connecting shaft, one end of the skeleton 108 is rotatably connected to the support frame 109, and the other end of the skeleton 108 is buckled and connected to the support frame 109 through a locking mechanism. When the mold connecting shaft is placed, the skeleton 108 is rotated to open its buckling end, and the mold connecting shaft is set between the two first rollers 104, and then the skeleton 108 is buckled and fixed by the locking mechanism. Specifically, in this embodiment, the locking mechanism includes but is not limited to the latch mechanism 102, and a locking block 103 is installed on the buckling end of the skeleton 108. The latch mechanism 102 includes a hook, a hook sleeve and a wrench, and the hook is fixedly installed on the locking block 103, and the wrench is rotatably installed on the buckling end of the support frame 109, and the hook sleeve is rotatably connected to the wrench, and the hook sleeve cooperates with the hook to buckle, and the hook sleeve is fixed on the hook by rotating the wrench to achieve quick buckling.

[0043] Preferably, the support platform 101 is also provided with a limiting mechanism that can lock the support platform 101 at any position, the limiting mechanism includes a limiting block, the limiting block is provided with a through hole, a limiting screw is passed through the through hole, and the rotating machine tool 300 is provided with a plurality of limiting screw holes for the limiting screw to pass through.

[0044] like Figure 4 , Figure 5 As shown, in this embodiment, the rotary drive mechanism 200 includes a first bracket 201 fixedly connected to one end of the rotary machine tool 300, a roller seat 209 installed on the first bracket 201 and a flange 207 for connecting the mold connecting shaft, two second rollers 208 are rotatably mounted on the roller seat 209, the flange 207 is rotatably mounted on the first bracket 201 through a rotating shaft 206 assembly, and a second driving mechanism for driving the flange 207 to rotate is also provided on the first bracket 201.

[0045] Specifically, the rotating shaft 206 assembly includes two shaft seats 205 , the shaft seats 205 are fixedly mounted on the first bracket 201 , the rotating shaft 206 is rotatably mounted between the shaft seats 205 , and the flange 207 is fixedly connected to one end of the rotating shaft 206 .

[0046] Specifically, the second driving mechanism includes a sprocket 204, a chain 203 and a reduction motor 202. The reduction motor 202 is installed on the first bracket 201. A large sprocket 204 is fixedly connected to the transmission shaft of the reduction motor 202. A small sprocket 204 is installed on the rotating shaft 206. The large sprocket 204 and the small sprocket 204 are connected to each other through the chain 203.

[0047] like Figure 6 , Figure 7 As shown, the feeding mechanism 400 includes a second bracket 401, a tensioning sleeve 402, a yarn guide assembly and a traveling mechanism. The second bracket 401 is slidably mounted on the feeding machine bed 500, and the tensioning sleeve 402 is rotatably mounted on the second bracket 401 for mounting a prepreg roll. A magnetic powder brake 409 for driving the tensioning sleeve 402 to rotate is fixedly connected to the second bracket 401. The traveling mechanism is used to drive the second bracket 401 to slide on the feeding machine bed 500, and the yarn guide assembly is rotatably mounted on the second bracket 401 for guiding and tensioning the prepreg.

[0048] Specifically, the yarn guide assembly includes two yarn guide wheels 405 and a yarn guide roller 403, and the yarn guide wheels 405 and the yarn guide roller 403 are axially parallel to the tensioning sleeve 402 and are rotatably installed on the second bracket 401. The two yarn guide wheels 405 are located below the yarn guide roller 403, and the yarn guide wheels 405 and the yarn guide roller 403 are distributed in an isosceles triangle. The end of the prepreg roll tensioned on the tensioning sleeve 402 is first wound into by the bottom of one of the yarn guide wheels 405, and then wound out by the bottom of the other yarn guide wheel 405 after passing the top of the yarn guide roller 403, thereby tensioning and guiding the prepreg. The end of the prepreg is wound around the mold 800, and the mold 800 rotates slowly. At the same time, the second bracket 401 slowly slides along the length direction of the feeder bed 500, so that the prepreg is wound around the mold 800.

[0049] Specifically, the travel mechanism includes a gear 410, a rack and a servo motor 406, the gear 410 is rotatably mounted on the bottom of the second bracket 401, the rack is fixedly connected to the feeder 500, the gear 410 is meshed with the rack, and the servo motor 406 is transmission-connected to the gear 410 via a pulley assembly 407. Preferably, a box body 408 for protecting the pulley assembly 407 is also fixedly connected to the second bracket 401.

[0050] Before the prepreg roll is used, a protective film will be covered on its upper and lower surfaces. Therefore, the protective film needs to be removed during the winding process. In order to solve the above problem, preferably, the present embodiment also includes two yarn-retracting rollers 404 for removing and recovering the prepreg protective film. The yarn-retracting rollers 404 are axially parallel to the tension sleeve 402 and are rotatably mounted on the second bracket 401. The yarn-retracting rollers 404 are located on the same side and are longitudinally distributed. The two yarn-retracting rollers 404 and the tension sleeve 402 are arranged in an isosceles triangle. A motor for driving the yarn-retracting rollers 404 to rotate is also installed on the second bracket 401. When in use, the ports of the protective film on the upper and lower end surfaces of the prepreg protective film are torn open and respectively fixed to the yarn-retracting rollers 404 on the corresponding sides. The yarn-retracting rollers 404 maintain the same rotation speed as the tension sleeve 402, thereby achieving the removal and recovery of the protective film.

[0051] In this embodiment, a control cabinet 600 is further included, and the start and stop of the motor and the speed control are realized through the control cabinet 600.

[0052] Preferably, in order to always maintain good tension of the prepreg, a pressure detection sensor is also provided on the yarn guide roller 403, and the pressure detection sensor is used to detect the feeding tension of the prepreg and feed back the tension information to the control cabinet 600. The control cabinet 600 controls the rotation speed of the magnetic powder brake 409 through the tension signal, so that the unwinding speed of the prepreg matches the winding speed of the mold 800, so that the prepreg is always kept in a taut state to ensure its uniform winding.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic winding machine, characterized in that: It includes a supporting rotating mechanism, a rotating driving mechanism, a feeding mechanism and a machine tool, wherein the machine tool is composed of a rotating machine tool and a feeding machine tool, wherein the rotating machine tool and the feeding machine tool are arranged in parallel and connected by a plurality of reinforcing ribs, wherein the rotating driving mechanism is fixedly connected to one end of the rotating machine tool to support one end of the mold connecting shaft and drive it to rotate, wherein the supporting rotating mechanism can be slidably arranged on the rotating machine tool along the length direction and used to rotationally support the other end of the mold connecting shaft, wherein the feeding mechanism can be slidably arranged on the feeding machine tool to unwind the prepreg, wherein the feeding mechanism is composed of two groups; The supporting rotating mechanism comprises a supporting platform slidably mounted on the rotating machine tool, a supporting frame is fixedly connected to the top of the supporting platform, the supporting frame is a U-shaped structure, and two first rollers for supporting the mold connecting shaft are installed on the supporting frame; The rotary drive mechanism comprises a first bracket fixedly connected to one end of the rotary machine tool, a roller seat mounted on the first bracket and a flange plate for connecting the mold connecting shaft, two second rollers are rotatably mounted on the roller seat, the flange plate is rotatably mounted on the first bracket through a rotating shaft assembly, and a second drive mechanism for driving the flange plate to rotate is also provided on the first bracket; The feeding mechanism includes a second bracket, a tensioning sleeve, a yarn guide assembly and a traveling mechanism. The second bracket is slidably mounted on the feeding machine bed. The tensioning sleeve and the yarn guide assembly are rotatably mounted on the second bracket. The traveling mechanism is used to drive the second bracket to slide on the feeding machine bed.

2. The automatic winding machine according to claim 1, characterized in that: It also includes a skeleton and a clamping wheel, wherein the skeleton is arranged on the support frame, and the clamping wheel can slide up and down on the skeleton through a first driving mechanism, the clamping wheel is parallel to the axis of the first roller, and the clamping wheel and the two first rollers are distributed in an isosceles triangle.

3. The automatic winding machine according to claim 2, characterized in that: One end of the skeleton is rotatably connected to the support frame, and the other end of the skeleton is buckled and connected to the support frame through a locking mechanism.

4. The automatic winding machine according to claim 1, characterized in that: The support platform is also provided with a limiting mechanism that can lock the support platform at any position, and the limiting mechanism includes a limiting block. A through hole is provided on the limit block, a limit screw is passed through the through hole, and a plurality of limit screw holes are provided on the rotary machine tool for the limit screw to pass through.

5. The automatic winding machine according to claim 1, characterized in that: The yarn guide assembly includes two yarn guide wheels and a yarn guide roller. The yarn guide wheels and the yarn guide roller are axially parallel to the tension sleeve and are rotatably mounted on the second bracket. The two yarn guide wheels are located below the yarn guide roller. The yarn guide wheels and the yarn guide roller are distributed in an isosceles triangle.

6. The automatic winding machine according to claim 5, characterized in that: It also includes a pressure detection sensor, which is installed on the yarn guide roller to detect the feeding tension of the prepreg, and the rotation speed of the tensioning sleeve is controlled by the feeding tension.

7. The automatic winding machine according to claim 1, characterized in that: It also includes two yarn collection rollers for removing and recovering the prepreg protective film. The yarn collection rollers are axially parallel to the tensioning sleeve and are rotatably mounted on the second bracket. The yarn collection rollers are located on the same side and are distributed longitudinally. The two yarn collection rollers and the tensioning sleeve form an isosceles triangle distribution.

Images