An automatic winding device based on FRP pipe

Abstract

The application discloses a kind of automatic winding device based on FRP pipe, it is related to FRP pipe processing technical field, including material collecting table, the material collecting table is installed with hanging roll frame, glue pressing groove, sliding table and winding roller from left to right in order, and the inside of sliding table is provided with reciprocating sliding and regularity swing reciprocating sliding block and wire column, the end of winding roller is equipped with output mechanism, the present scheme adopts the synchronous compression of pressure rod and groove to realize the end of multiple groups of fiber yarn, after rotating a certain angle, fiber yarn is gradually adhered tightly and dynamic conversion is completed, and the load is small, the pressure rod will be hooked by hook to make the pressure rod and the following rotation of rotating disc no longer continue and make the pressure rod separate from the surface of winding roller, so as to achieve the effect of automatic separation, so that fiber yarn can stably overcome the load required by long stroke and static conversion to dynamic in initial winding stage, avoid the end of fiber yarn to separate, and simple operation can be repeatedly used.

Description

Technical Field

[0001] This invention relates to the field of FRP pipe processing technology, specifically to an automatic winding device based on FRP pipe. Background Technology

[0002] FRP (fiber-reinforced polymer) is a high-performance material formed by mixing fiber materials and matrix materials (resin) in a certain proportion. FRP production methods are basically divided into two categories: wet contact molding and dry pressure molding. Based on process characteristics, there are hand lay-up molding, lamination molding, RTM (Regenerative Thermal Mold), pultrusion, compression molding, and filament winding. Hand lay-up molding includes hand lay-up, bag molding, spray molding, wet lay-up low-pressure molding, and moldless hand lay-up.

[0003] The main process of FRP winding molding is as follows: First, the rolled fiber yarn is placed on the hanging frame, and then the fiber yarn is unwound into the pressing groove. The fiber yarn is pressed into the adhesive liquid in the groove by a manually rotatable pressure rod, so that the fiber yarn is adhered to the adhesive. Then, the fiber yarn is passed into the traveling mechanism for limiting and finally the fiber yarn is adhered to the take-up roller coated with release agent. The take-up roller continues to wind and the traveling mechanism carries multiple sets of unwound fiber yarns back and forth, so that multiple sets of fiber yarns are arranged in a spiral and wound on the take-up roller. The angle of the spiral can be adjusted by the rotation speed of the take-up roller and the moving speed of the traveling mechanism.

[0004] Based on the aforementioned winding molding method of FRP tubes, the fiber yarn is carried back and forth by the traveling mechanism during the winding process to achieve a spiral arrangement of the fiber yarn on the winding roller. However, during operation, we discovered a problem: when the fiber yarn is wound horizontally, the tension at each position of the fiber yarn is the same. But when the fiber yarn is forced to bend at an angle as it moves with the traveling mechanism (see attached diagram), the tension is different. Figure 1-3 We found that the tension on the fiber yarn at both ends of the bend was different. Since fiber yarn is a tough material with elasticity and plasticity, different tension will cause different sections of the fiber yarn to have different deformations (that is, different yarn diameters), resulting in thickness differences of the fiber yarn wound on the take-up roller. If the thickness difference of the final wound FRP tube is too large, it will not meet the production standards, leading to rework and waste of raw materials.

[0005] In addition, during the initial operation of the aforementioned FRP winding molding equipment, the unwound fiber yarn with resin adhesive is usually manually pulled onto the take-up roller. The initial fixation of the fiber yarn take-up end is achieved by the adhesion between the resin adhesive and the take-up roller. However, the take-up roller is usually coated with a release agent to facilitate demolding. This makes it difficult to firmly position the fiber yarn end through the adhesive. Especially in the initial stage of the take-up roller start-up, the large torque and the long stroke of the fiber yarn pull the stationary fiber yarn roller to turn, which greatly tests the stability of the connection between the fiber yarn and the take-up roller. In the actual production process, the phenomenon of fiber yarn end falling off is inevitable.

[0006] To address the aforementioned issues, there is an urgent need for innovative design based on the existing automatic FRP pipe winding device. Summary of the Invention

[0007] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the invention aims to provide an automatic winding device based on FRP tubes to solve the problem mentioned in the background: when the fiber yarn is wound horizontally, the tension at each position of the fiber yarn is the same. However, when the fiber yarn is forced to bend at an angle as it moves with the traveling mechanism, the tension at both ends of the fiber yarn at the bend is different. Since fiber yarn is a resilient material with elasticity and plasticity, different tensions will cause unequal deformation in different sections of the fiber yarn, resulting in thickness differences in the fiber yarn wound on the winding roller.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic winding device based on FRP pipe, comprising a collection platform, wherein a roll hanger, a pressure groove, a slide table, and a take-up roller are installed on the collection platform from left to right, and the slide table is provided with a reciprocating slider and a guide post that can reciprocate and swing regularly, the end of the take-up roller is provided with an output mechanism, and the outer wall of the take-up roller is provided with a pressure bar to prevent the fiber yarn from falling off in the early stage of winding, and after the fiber yarn is unwound from the roll hanger, it passes through the pressure groove and the guide post in sequence and is finally pressed onto the surface of the take-up roller.

[0009] Preferably, the guide posts are evenly distributed on the lower surface of the reciprocating slider, a lead screw is installed through the inside of the slide, one end of the lead screw is connected to a servo motor fixed to the outer end of the slide, the reciprocating slider is threadedly connected to the lead screw, and the end of the slide is hinged to an open mounting plate fixed on the upper surface of the collecting platform.

[0010] Preferably, a fixing plate is fixed to the upper surface of the reciprocating slider, and a guide rod is hinged to the lower surface of the outer end of the fixing plate. A guide plate is fixed to the upper surface of the collecting platform, and a guide groove is formed through the interior of the guide plate. The lower end of the guide rod is slidably disposed inside the guide groove.

[0011] Preferably, the guide plate is formed by symmetrically splicing two arc plates, and the guide groove is formed by symmetrically splicing two arc grooves. The guide rod forms a locking sliding structure with the guide plate through the guide groove.

[0012] Preferably, an output motor is fixedly installed on the upper surface of the collecting platform, and an output gear is connected to the output end of the output motor. A driven gear meshes with one side of the output gear, and the central shaft of the end of the winding roller is fixedly connected to the center of the driven gear.

[0013] Preferably, turntables are symmetrically installed at both ends of the take-up roller, and the center of the turntable is located on the extension line of the central axis of the take-up roller. A fixed shaft installed on the upper surface of the collecting platform is installed through the through groove at the center of the turntable. A spiral spring is provided between the outer wall of the fixed shaft and the inner wall of the through groove. The two ends of the spiral spring are respectively welded to the inner wall of the through groove and the outer wall of the fixed shaft. A sliding groove is opened inside the turntable, and a fixed rod is fixed inside the sliding groove. The end of the pressure rod is sleeved on the outer wall of the fixed rod. A first spring is wound around the outer wall of the fixed rod. One end of the first spring is welded to the outer wall of the pressure rod, and the other end of the first spring is fixed to the inner wall of the sliding groove.

[0014] Preferably, the outer surface of the take-up roller is provided with a groove, and the pressure bar presses the fiber yarn into the inside of the groove.

[0015] Preferably, a fixed platform is symmetrically fixed on the upper surface of the collecting platform about the central axis of the winding roller, and a hook is hinged on the upper surface of the fixed platform. A second spring is provided between the hook and the fixed platform, and the lower surface of the hook near the winding roller is in contact with the upper inclined surface of the fixed platform. A space is reserved between the lower surface of the hook away from the winding roller and the upper inclined surface of the fixed platform for the hook to rotate in one direction.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This solution uses the clamping action of a pressure bar and a groove to simultaneously clamp the ends of multiple fiber yarns. After rotating a certain angle, the fiber yarns gradually stick together and the dynamic transition is completed. When the load is small, the pressure bar is hooked up, causing the pressure bar and the turntable to stop rotating and the pressure bar to detach from the surface of the take-up roller, thus achieving an automatic detachment effect. This allows the fiber yarn to stably overcome the long stroke of the fiber yarn and the load required for the transition from static to dynamic motion in the early stage of take-up, preventing the fiber yarn ends from detaching. At the same time, it is simple to operate and can be used repeatedly. Furthermore, during winding, the reciprocating slider slides synchronously along the outer wall of the lead screw under the combined action of the slide table and the lead screw. As the reciprocating slider slides, it drives the fixed plate and the guide rod to move synchronously. At the same time, due to the limiting effect of the guide groove, the guide rod will exert a pulling force on the fixed plate and the reciprocating slider in the opposite direction, causing the slide table to rotate counterclockwise at a small angle. When one end of the reciprocating slider reaches the center position, the fiber yarn is straightened. When it continues to slide, the reciprocating slider will oscillate at the same frequency and angle. If the reciprocating slider only slides horizontally, there will be an angle difference in the fiber yarn on both sides of the reciprocating slider, which will lead to different tensions on the fiber yarn on both sides and different deformation. This solution uses the special motion of the reciprocating slider to oscillate while sliding to keep the angle of the fiber yarn on both sides of the reciprocating slider in a relatively balanced state, thereby effectively avoiding the problem of angle difference in the fiber yarn on both sides of the reciprocating slider and the problem of different tensions on the fiber yarn on both sides and different deformation. Attached Figure Description

[0017] Figure 1 This is a top view of the overall structure of the invention in its initial state; Figure 2 This is a top view of the overall structure of the invention during its initial operation. Figure 3 This is a top view of the overall structure of the invention during its operation. Figure 4 This is a frontal view of the installation structure of the present invention; Figure 5 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle section; Figure 6 This is a schematic diagram of the structure of the slide table after it has been flipped. Figure 7 This is a schematic diagram showing the positional relationship between the turntable, pressure rod, and hook of the spiral spring of the present invention in its natural state. Figure 8 This is a schematic diagram showing the positional relationship when the pressure rod pushes open the hook and compresses the spiral spring via the turntable in this invention. Figure 9 This is a schematic diagram showing the positional relationship of the pressure bar after it passes the hook and falls into the groove. Figure 10 This is a schematic diagram of the connection structure between the pressure bar and the take-up roller of the present invention.

[0018] In the diagram: 1. Collection platform; 2. Roll hanging frame; 3. Glue pressing groove; 4. Slide table; 41. Lead screw; 42. Servo motor; 43. Reciprocating slider; 44. Guide post; 45. Fixing plate; 46. Guide rod; 47. Guide plate; 48. Guide groove; 5. Take-up roller; 51. Output motor; 52. Output gear; 53. Driven gear; 54. Groove; 6. Turntable; 61. Spiral spring; 62. Slide groove; 63. Fixing rod; 64. First spring; 7. Pressure rod; 71. Fixing platform; 72. Hook; 73. Second spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-10 The present invention provides a technical solution: an automatic winding device based on FRP pipe, including a collection platform 1, on which a hanging frame 2, a pressure groove 3, a slide table 4 and a take-up roller 5 are installed from left to right. The slide table 4 is provided with a reciprocating slider 43 and a guide post 44 that can reciprocate and swing regularly. An output mechanism is installed at the end of the take-up roller 5, and a pressure bar 7 is provided on the outer wall of the take-up roller 5 to prevent the fiber yarn from falling off in the early stage of winding. After the fiber yarn is unwound from the hanging frame 2, it passes through the pressure groove 3 and the guide post 44 in sequence and is finally pressed onto the surface of the take-up roller 5.

[0021] The guide posts 44 are evenly distributed on the lower surface of the reciprocating slider 43. A lead screw 41 is installed through the inside of the slide table 4, and one end of the lead screw 41 is connected to a servo motor 42 fixed to the outer end of the slide table 4. The reciprocating slider 43 is threadedly connected to the lead screw 41. The end of the slide table 4 is hinged to an open mounting plate fixed on the upper surface of the collecting table 1. The fiber yarn is limited and guided by the inverted and evenly distributed guide posts 44. The number of guide posts 44 can be flexibly set according to the number of fiber yarn groups.

[0022] A fixed plate 45 is fixed on the upper surface of the reciprocating slider 43, and a guide rod 46 is hinged to the lower surface of the outer end of the fixed plate 45. A guide plate 47 is fixed on the upper surface of the collecting platform 1, and a guide groove 48 is provided through the interior of the guide plate 47. The lower end of the guide rod 46 is slidably disposed inside the guide groove 48.

[0023] The guide plate 47 is symmetrically spliced ​​from two arc plates, and the guide groove 48 is symmetrically spliced ​​from two arc grooves. The guide rod 46 forms a sliding structure with the guide plate 47 through the guide groove 48. When the reciprocating slider 43 moves back and forth, it will drive the guide rod 46 to move along the inner wall of the guide groove 48. The guide groove 48 will exert a pulling force on the guide rod 46 in the opposite direction, so that the reciprocating slider 43 moves and swings and rotates along a predetermined trajectory, thereby maximizing the included angle of the fiber yarn on both sides of the guide post 44, so that the angle of the fiber yarn on both sides is as similar as possible, so as to balance the tension on the fiber yarn on both sides of the guide post 44, and finally achieve the effect of balancing the deformation of different segments of the fiber yarn.

[0024] An output motor 51 is fixedly installed on the upper surface of the collecting platform 1, and an output gear 52 is connected to the output end of the output motor 51. A driven gear 53 is meshed on one side of the output gear 52, and the central shaft of the end of the winding roller 5 is fixedly connected to the center of the driven gear 53.

[0025] Turntables 6 are symmetrically installed at both ends of the take-up roller 5, and the center of the turntables 6 is located on the extension line of the central axis of the take-up roller 5. A fixed shaft installed on the upper surface of the collecting platform 1 is installed through the through groove at the center of the turntable 6. A spiral spring 61 is installed between the outer wall of the fixed shaft and the inner wall of the through groove. The two ends of the spiral spring 61 are respectively welded to the inner wall of the through groove and the outer wall of the fixed shaft. A sliding groove 62 is opened inside the turntable 6, and a fixed rod 63 is fixed inside the sliding groove 62. The end of the pressure rod 7 is sleeved on the outer wall of the fixed rod 63. A first spring 64 is wound around the outer wall of the fixed rod 63. One end of the first spring 64 is welded to the outer wall of the pressure rod 7, and the other end of the first spring 64 is fixed to the inner wall of the sliding groove 62.

[0026] The outer surface of the take-up roller 5 has a groove 54, and the pressure rod 7 presses the fiber yarn into the inside of the groove 54. When the pressure rod 7 falls into the inside of the groove 54, the first spring 64 is in a compressed state. Therefore, under the pushing action of the first spring 64, the pressure rod 7 will be firmly locked in the inside of the groove 54. When the take-up roller 5 rotates, the groove 54 will also drive the pressure rod 7 and the turntable 6 to rotate synchronously.

[0027] A fixed platform 71 is symmetrically fixed on the upper surface of the collecting platform 1 about the central axis of the winding roller 5, and a hook 72 is hinged on the upper surface of the fixed platform 71. A second spring 73 is provided between the hook 72 and the fixed platform 71. The lower surface of the hook 72 near the winding roller 5 is in contact with the upper inclined surface of the fixed platform 71. A space is reserved between the lower surface of the hook 72 away from the winding roller 5 and the upper inclined surface of the fixed platform 71 for the hook 72 to rotate in one direction.

[0028] Working principle: When using this FRP-based automatic winding device, firstly as follows... Figure 1 and Figure 4 As shown, the fiber yarn rolls are placed sequentially on the hanging frame 2 (the hanging frame 2 has fixed pins for positioning the fiber yarn rolls), and then the ends of the fiber yarns are passed sequentially through the pressure groove 3 (so that the surface of the fiber yarns is completely adhered to the resin colloid) and the gap between the adjacent guide post 44 at the lower end of the slide table 4, and finally placed on the take-up roller 5.

[0029] In the initial state, the pressure bar 7 is located as follows: Figure 7 At the position shown, the pressure rod 7 is pulled outward along the slide groove 62. The pressure rod 7 slides outward along the outer wall of the fixed rod 63, compressing the first spring 64. Then, the pressure rod 7 is rotated counterclockwise. The pressure rod 7 drives the turntable 6 to rotate steadily counterclockwise, gradually compressing the spiral spring 61. Figure 8 As shown, when the pressure rod 7 touches the surface of the hook 72, it pushes the hook 72, causing the hook 72 to rotate clockwise on the fixed platform 71 and compress the second spring 73 (the rotation in this article refers only to the planar orientation in the attached figure; the actual rotation direction depends on the viewing angle), and as... Figure 9 As shown, after the pressure rod 7 passes, the hook 72 will quickly return to its original position under the reset action of the second spring 73, and as... Figure 4 As shown, the surface of the take-up roller 5 has a groove 54. Therefore, the pressure rod 7 is rotated to the position corresponding to the groove 54, and multiple sets of fiber yarns are placed sequentially on the surface of the groove 54, with the ends of the multiple sets of fiber yarns as close to the same horizontal line as possible. Then, the pressure rod 7 is pushed into the groove 54, and the pressure rod 7 is firmly engaged in the groove 54 by the reset action of the first spring 64. Figure 1 As shown, the ends of multiple sets of fiber yarns are pressed together (when not in use, hook 72 can be manually flipped back to return the pressure bar 7 to its original position). Figure 7 The state shown is to avoid continuous compression of the spiral spring 61 when not in use.

[0030] After the above preparations are completed, the servo motor 42 and the output motor 51 are started simultaneously. The output motor 51 stably drives the take-up roller 5 to rotate clockwise through the output gear 52 and the driven gear 53. At this time, as Figure 4 The take-up roller 5 shown in the figure synchronously drives the pressure rod 7 and the multiple sets of pressed fiber yarn ends to rotate clockwise through the cooperation between the groove 54 and the reset action of the first spring 64. This causes the fiber yarn to gradually wind onto the take-up roller 5. When the take-up roller 5 rotates the pressure rod 7 by a certain angle, the pressure rod 7 will gradually touch the hooks 72 that are symmetrically arranged at both ends. The hooks 72 cannot follow the rotation and have the characteristics of an arc-shaped inclined surface. Therefore, the hooks 72 will hook the pressure rod 7 out of the groove 54. Once the pressure rod 7 is hooked out of the groove 54, the spiral spring 61 will continue to rotate clockwise to reset and make the pressure rod 7 slide outward along the inclined surface of the hook 72 and slide outward along the outer wall of the fixed rod 63, and continue to compress the first spring 64. This makes the pressure rod 7 gradually move away from the surface of the take-up roller 5 and remain stable.

[0031] Immediately after the pressure bar 7 disengages as described above, the take-up roller 5 continues to rotate, carrying the ends of multiple sets of fiber yarns, while simultaneously... Figure 1 and Figure 2 During winding, the reciprocating slider 43 slides synchronously along the outer wall of the lead screw 41 under the combined action of the slide table 4 and the lead screw 41. As the reciprocating slider 43 slides, it drives the fixed plate 45 and the guide rod 46 to move synchronously. Simultaneously, because the guide rod 46 is limited by the guide groove 48, it exerts a pulling force on the fixed plate 45 and the reciprocating slider 43 in the opposite direction, causing the slide table 4 to rotate counterclockwise at a small angle. Figure 3 As shown, when one end of the reciprocating slider 43 reaches the center position, the fiber yarn is straightened. When it continues to slide, the reciprocating slider 43 will swing at the same frequency and angle.

[0032] If the reciprocating slider 43 only slides horizontally, the fiber yarns on both sides of the reciprocating slider 43 will have an angle difference, resulting in different tensions on the fiber yarns on both sides and thus different deformation. This solution, however, [is different]. Figure 1 and Figure 2 The special motion of the reciprocating slider 43, which slides and oscillates simultaneously, keeps the angles of the fiber yarns on both sides of the slider 43 in a relatively balanced state. This effectively avoids the problem of angle differences between the fiber yarns on both sides of the slider 43, which would lead to different tensile forces and deformations. At the same time, this solution uses the pressing rod 7 and the groove 54 to press the ends of multiple sets of fiber yarns synchronously. After rotating a certain angle, the fiber yarns gradually stick together and the dynamic transition is completed. When the load is small, the pressing rod 7 is hooked by the hook 72, which stops the following rotation of the pressing rod 7 and the turntable 6 and causes the pressing rod 7 to detach from the surface of the take-up roller 5, thus achieving an automatic detachment effect. This allows the fiber yarn to stably overcome the long stroke of the fiber yarn and the load required for the transition from static to dynamic in the early stage of take-up, preventing the fiber yarn ends from detaching. It is also simple to operate and can be used repeatedly.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic winding device based on FRP pipe, comprising a material collection table (1), characterized in that: The collecting platform (1) is equipped with a hanging frame (2), a pressing groove (3), a slide table (4) and a take-up roller (5) from left to right. The slide table (4) is equipped with a reciprocating slider (43) and a guide post (44) that can slide back and forth and swing regularly. The end of the take-up roller (5) is equipped with an output mechanism. The outer wall of the take-up roller (5) is equipped with a pressure bar (7) to prevent the fiber yarn from falling off in the early stage of winding. After the fiber yarn is unwound from the hanging frame (2), it passes through the pressing groove (3) and the guide post (44) and is finally pressed onto the surface of the take-up roller (5). The take-up roller (5) is symmetrically equipped with turntables (6) at both ends, and the center of the turntable (6) is located on the extension line of the central axis of the take-up roller (5). A fixed shaft installed on the upper surface of the collection platform (1) is provided through the through groove at the center of the turntable (6). A spiral spring (61) is provided between the outer wall of the fixed shaft and the inner wall of the through groove. The two ends of the spiral spring (61) are respectively welded to the inner wall of the through groove and the outer wall of the fixed shaft. A sliding groove (62) is opened inside the turntable (6), and a fixed rod (63) is fixed inside the sliding groove (62). The end of the pressure rod (7) is sleeved on the outer wall of the fixed rod (63). A first spring (64) is wound around the outer wall of the fixed rod (63). One end of the first spring (64) is welded to the outer wall of the pressure rod (7), and the other end of the first spring (64) is fixed to the inner wall of the sliding groove (62). The outer surface of the take-up roller (5) is provided with a groove (54), and the pressure bar (7) presses the fiber yarn into the inside of the groove (54); The upper surface of the collecting platform (1) is symmetrically fixed with a fixed platform (71) about the central axis of the winding roller (5), and a hook (72) is hinged to the upper surface of the fixed platform (71). A second spring (73) is provided between the hook (72) and the fixed platform (71). The lower surface of the hook (72) near the winding roller (5) is in contact with the upper inclined surface of the fixed platform (71). A space is reserved between the lower surface of the hook (72) away from the winding roller (5) and the upper inclined surface of the fixed platform (71) for the hook (72) to rotate in one direction.

2. An automatic winding device based on FRP pipe according to claim 1, characterized in that: The guide posts (44) are evenly distributed on the lower surface of the reciprocating slider (43). A lead screw (41) is installed through the inside of the slide (4), and one end of the lead screw (41) is connected to a servo motor (42) fixed to the outer end of the slide (4). The reciprocating slider (43) is threadedly connected to the lead screw (41). The end of the slide (4) is hinged to an open mounting plate fixed on the upper surface of the collecting platform (1).

3. An automatic winding device based on FRP pipe according to claim 2, characterized in that: The upper surface of the reciprocating slider (43) is fixed with a fixing plate (45), and the lower surface of the outer end of the fixing plate (45) is hinged with a guide rod (46). The upper surface of the collecting platform (1) is fixed with a guide plate (47), and a guide groove (48) is provided through the inside of the guide plate (47), and the lower end of the guide rod (46) is slidably disposed inside the guide groove (48).

4. The automatic winding device based on FRP pipe according to claim 3, characterized in that: The guide plate (47) is formed by symmetrical splicing of two arc plates, and the guide groove (48) is formed by symmetrical splicing of two arc grooves. The guide rod (46) forms a sliding structure with the guide plate (47) through the guide groove (48).

5. An automatic winding device based on FRP pipe according to claim 1, characterized in that: An output motor (51) is fixedly installed on the upper surface of the collecting platform (1), and an output gear (52) is connected to the output end of the output motor (51). A driven gear (53) meshes with one side of the output gear (52). The central shaft of the end of the winding roller (5) is fixedly connected to the center of the driven gear (53).

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