Active film collecting device for wire feeding system of automatic wire placement machine

Abstract

The invention relates to the technical field of film collecting devices, in particular to an active film collecting device for a wire feeding system of an automatic wire placement machine, when the tension of a tow is too large, a tension wheel below is pulled upwards, an elastic element is lengthened, and the distance of the tow passing through a wire tensioning part is shortened, so that the tension of the tow is reduced; when the tension of the tow is too small, the tension wheel below is pulled up downwards, the elastic element contracts, and the distance of the tow passing through the tow tensioning part is prolonged, so that the tension of the tow is increased, the tow is maintained in a constant tension range, stable drawing can be guaranteed, and the tow cannot be pulled apart; when the tension of a back film wound on the film collecting roller is too large, relative sliding is generated between the friction core and the film collecting roller, the film collecting roller does not rotate along with the friction core any more, the tension of the back film on the film collecting roller is gradually reduced along with extraction of the back film, and when the tension of the back film is smaller than the friction force between the friction core and the inner surface of the film collecting roller, the friction core drives the film collecting roller to rotate together. And the back film is prevented from being snapped due to overlarge tension.

Description

Technical Field

[0001] The present invention relates to the technical field of film collecting devices, and in particular to an active film collecting device for a wire feeding system of an automatic wire laying machine. Background Art

[0002] Composite materials have the advantages of high specific strength, high specific modulus, fatigue resistance, good vibration damping, and good processability. These advantages are of great value to the performance of aircraft and have been widely used in the aerospace industry. At the same time, the use of composite materials in other industries is also increasing. For composite integral structural parts in the aviation field, such as aircraft wings, aircraft fuselage sections, and turbofan engine blades, if they are laid manually, it will cause a lot of material waste, unstable laying quality, and time-consuming. The automatic wire laying head can cut and feed each strand of wire separately, and can also set the wire laying trajectory according to the shape contour. It can lay complex surfaces, even with windows. Therefore, for such complex components, an automatic wire laying head is needed to realize laying and processing. The automatic wire laying machine needs a barrel made of carbon fiber prepreg as the production raw material, and the prepreg tape is laid on the mold surface through the wire laying head. The prepreg tape is evenly wound on the barrel, and there is a backing film on one side of the prepreg to separate the prepreg to prevent the prepreg from sticking together. Most of the existing wire laying head barrels are arranged vertically and evenly distributed on the flange. The prepreg tow is pulled out from the barrel together with the back film. After passing through the film collecting roller, the back film is wound on the film collecting roller. The prepreg tow then passes through the tension control roller and enters the wire laying head.

[0003] The existing film collecting device only realizes film collecting by wrapping the pulled filament bundle around the film collecting roller and driving the film collecting roller through friction. This method is passive film collecting and has low reliability. The tightened film cannot be wound around the film collecting roller with constant tension, sometimes the film cannot be collected, and sometimes the film will be broken. Summary of the invention

[0004] The main purpose of the present invention is to provide an active film collecting device for the wire feeding system of an automatic wire laying machine, so as to solve the problem in the related art that the tightened film cannot be wound around the film collecting roller with a constant tension, sometimes the film cannot be collected, and sometimes the film is broken.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided an active film collecting device for a wire feeding system of an automatic wire laying machine, comprising: a barrel portion, the barrel portion comprising a barrel shaft, the barrel portion being used to store a backing film and a wire bundle, the backing film and the wire bundle being wound around the barrel shaft;

[0006] The film collecting part comprises a film collecting roller, a friction core and a film collecting shaft, wherein the film collecting shaft is coaxially rotatable inside the film collecting roller, the friction core is fixedly arranged on the top of the film collecting shaft and can rotate along the inner wall of the film collecting roller, and the film collecting shaft drives the friction core to rotate when rotating, and the friction core drives the film collecting roller to rotate through friction force, and the film collecting roller wraps the back film on its surface when rotating, and when the tension of the back film on the film collecting roller is greater than the friction force between the friction core and the inner wall of the film collecting roller, the friction core and the film collecting roller rotate relative to each other to reduce the tension of the back film;

[0007] A wire tensioning part, the wire tensioning part includes a tensioning group and an adjusting member, the tensioning group guides and tensions the wire bundle, the adjusting member is used to adjust the tension of the wire bundle on the tensioning group, when the tension is too large, the adjusting member moves up to reduce the length of the wire bundle on the tensioning group, when the tension is too small, the adjusting member moves down to increase the length of the wire bundle on the tensioning group;

[0008] The transmission part includes a flange and a transmission group. The transmission group is located on the upper part of the flange. The barrel part, the film collecting part and the wire stretching part are located on the lower part of the flange. When the barrel shaft rotates, the film collecting shaft is driven to rotate through the transmission group.

[0009] Furthermore, the barrel portion also includes a barrel, a first barrel bracket and a second barrel bracket. The barrel side wall is provided with a hole, and the back film and the filament bundle are drawn out from the hole. The barrel shaft is coaxially fixed inside the barrel, and the upper end of the barrel shaft is rotatably connected to the flange.

[0010] Furthermore, a friction plate and two rubber pads are fixedly provided at the upper end of the barrel shaft, and the friction plate is rotatably arranged between the two rubber pads. The distance between the two rubber pads can be adjusted by bolts. When the distance between the two rubber pads decreases, the friction force between the two rubber pads and the friction plate increases, and when the distance between the two rubber pads increases, the friction force between the two rubber pads and the friction plate decreases.

[0011] Furthermore, the first barrel bracket is hinged to the second barrel bracket, the bottom end of the first barrel bracket is rotatably connected to the bottom of the barrel, the top end of the second barrel bracket is fixedly connected to the flange, and the first barrel bracket and the second barrel bracket are used to prevent the wire bundle on the barrel surface from slipping.

[0012] Furthermore, the tensioning group includes a number of tension wheels, a number of No. 1 connecting rods, a number of grooves, a No. 2 connecting rod and a frame. The frame is vertically fixed below the flange. The tension wheels are provided with a number of grooves to guide the wire bundles. A No. 1 connecting rod is fixed below the upper tension wheel. The No. 1 connecting rod is rotatably arranged on the front side of the frame. A No. 2 connecting rod is fixed below the lower tension wheel.

[0013] Furthermore, the adjusting member includes a guide rail, a slider and an elastic element. The guide rail is fixed on the front side of the frame, the slider is arranged above the guide rail and can slide back and forth along the guide rail, the elastic element is located above the guide rail, and one end of the elastic element is fixedly connected to the guide rail, and the other end is fixedly connected to the slider.

[0014] Furthermore, the transmission group includes a large synchronous pulley, a synchronous belt, a small synchronous pulley and a spur gear pair. The large synchronous pulley is rotatably arranged on the upper surface of the flange, and the axis of the large synchronous pulley is fixedly connected to the upper end of the barrel shaft.

[0015] Furthermore, the small synchronous belt pulley is rotatably arranged on the upper surface of the flange, and the synchronous belt sleeve is arranged on the outer rings of the large synchronous belt pulley and the small synchronous belt pulley, so that the large synchronous belt pulley and the small synchronous belt pulley maintain the same linear speed and rotate synchronously.

[0016] Furthermore, the spur gear pair includes gear one and gear two, the gears are coaxially fixed below the small synchronous pulley and are rotatably connected to the flange, the gear two is located on the side of gear one and meshes with gear one, the axis of the gear two is fixedly connected to the film collecting shaft and can rotate along the flange.

[0017] Furthermore, the diameter of the barrel gradually decreases as the tow is drawn out, and the diameter of the film-receiving roller gradually increases as the back film is wound up. Assuming that the diameter of the film-receiving roller is d1, the diameter of the barrel is d2, the diameter of the large synchronous pulley is n1, and the diameter of the small synchronous pulley is n2, the linear speed v1 of the film-receiving roller is:

[0018]

[0019] Barrel linear speed v2:

[0020]

[0021] The linear speed of the film-collecting roller is always controlled to be greater than the linear speed of the barrel, v1>v2, that is:

[0022]

[0023] After simplification, we get:

[0024]

[0025] That is, the ratio of the diameter of the large synchronous pulley to the diameter of the small synchronous pulley is greater than the ratio of the diameter of the barrel to the diameter of the film-receiving roller.

[0026] Compared with the prior art, the present invention has the following beneficial effects: when the tension of the yarn bundle is too large and the pulling force of the yarn bundle on the tension wheel below is greater than the pulling force of the elastic element, the tension wheel below is pulled upward, and the slider is driven to slide upward along the guide rail by the No. 2 connecting rod, the elastic element is stretched, the distance between the lower tension wheel and the upper tension wheel is shortened, and the distance of the yarn bundle through the tensioning part is shortened, thereby reducing the tension of the yarn bundle; when the tension of the yarn bundle is too small and the pulling force of the yarn bundle on the tension wheel below is less than the pulling force of the elastic element, the tension wheel below is pulled downward, and the slider is driven to slide downward along the guide rail by the No. 2 connecting rod, the elastic element contracts, the distance between the lower tension wheel and the upper tension wheel is expanded, and the distance of the yarn bundle through the tensioning part is increased. The distance between the lower tension wheel and the upper tension wheel is adjusted to adjust the tension of the filament bundle, so that the filament bundle is maintained within a constant tension range, which can ensure the stable drawing process without breaking the filament bundle. When the tension of the back film wrapped on the film-collecting roller is too large and greater than the friction between the friction core and the inner surface of the film-collecting roller, relative sliding occurs between the friction core and the film-collecting roller, and the film-collecting roller no longer rotates with the friction core. As the back film is drawn out, the tension of the back film on the film-collecting roller gradually decreases. When its tension is less than the friction between the friction core and the inner surface of the film-collecting roller, the friction core drives the film-collecting roller to rotate together and continues to wind up the back film to prevent the back film from being broken due to excessive tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of the present invention;

[0028] Figure 2 It is a bottom view of the present invention;

[0029] Figure 3 It is a detailed structural schematic diagram of the present invention;

[0030] Figure 4 It is a schematic diagram of the transmission structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the barrel structure of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the film collecting part of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the wire tensioning part of the present invention.

[0034] Illustration Description:

[0035] 001, back film; 002, tow;

[0036] 1. Transmission unit; 101. Large synchronous pulley; 102. Synchronous belt; 103. Small synchronous pulley; 104. Spur gear pair; 105. Flange;

[0037] 2. Barrel part; 201. Barrel; 202. First barrel support; 203. Second barrel support; 204. Barrel shaft;

[0038] 3. Film collecting part; 301. Film collecting roller; 302. Friction core; 303. Film collecting shaft;

[0039] 4. Wire tensioning unit; 401. Tension wheel; 402. No. 1 connecting rod; 403. Groove; 404. No. 2 connecting rod; 405. Guide rail; 406. Slider; 407. Elastic element; 408. Frame. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] See also Figures 1 to 7 The present embodiment provides an active film collecting device for a wire feeding system of an automatic wire laying machine, comprising: a barrel portion 2, the barrel portion 2 comprising a barrel shaft 204, the barrel portion 2 being used to store a back film 001 and a wire bundle 002, the back film 001 and the wire bundle 002 being wound on the barrel shaft 204, the back film 001 separating each layer of the wire bundle 002 to prevent the wire bundle 002 from being entangled;

[0042] The film collecting part 3 includes a film collecting roller 301, a friction core 302 and a film collecting shaft 303. The film collecting shaft 303 is coaxially rotatable inside the film collecting roller 301. The friction core 302 is fixedly arranged on the top of the film collecting shaft 303 and can rotate along the inner wall of the film collecting roller 301. When the film collecting shaft 303 rotates, it drives the friction core 302 to rotate. The friction core 302 drives the film collecting roller 301 to rotate through the friction force. When the film collecting roller 301 rotates, it wraps the back film 001 around its surface to rewind the back film 001. When the tension of the back film 001 on the film collecting roller 301 is greater than the friction between the friction core 302 and the inner wall of the film collecting roller 301, the friction core 302 and the film collecting roller 301 rotate relative to each other, the rotation speed of the film collecting roller 301 decreases, or even stops, and the rewinding speed of the back film 001 decreases, thereby reducing the tension of the back film 001.

[0043] The wire tensioning part 4 includes a tensioning group and an adjusting member. The tensioning group guides and tensions the wire bundle 002 to prevent the wire bundle 002 from being entangled. The adjusting member is used to adjust the tension of the wire bundle 002 on the tensioning group. When the tension is too large, the adjusting member moves upward to reduce the length of the wire bundle 002 on the tensioning group to reduce the tension. When the tension is too small, the adjusting member moves downward to increase the length of the wire bundle 002 on the tensioning group to increase the tension.

[0044] The transmission part 1 includes a flange 105 and a transmission group. The transmission group is located at the upper part of the flange 105. The barrel part 2, the film collecting part 3 and the wire stretching part 4 are located at the lower part of the flange 105. When the barrel shaft 204 rotates, the film collecting shaft 303 is driven to rotate through the transmission group.

[0045] The barrel portion 2 also includes a barrel 201, a first barrel bracket 202 and a second barrel bracket 203. The side wall of the barrel 201 is provided with a hole, and the back film 001 and the filament bundle 002 are pulled out from the hole. The barrel shaft 204 is coaxially fixed inside the barrel 201. The upper end of the barrel shaft 204 is rotatably connected to the flange 105. When the filament bundle 002 is pulled out from the barrel 201, it drives the barrel 201 to rotate, and the barrel 201 drives the barrel shaft 204 to rotate.

[0046] A friction plate and two rubber pads are fixedly provided at the upper end of the barrel shaft 204. The friction plate is rotatably arranged between the two rubber pads. The two rubber pads can adjust the spacing by bolts. When the distance between the two rubber pads decreases, the friction between the friction plate and the friction plate increases. When the barrel shaft 204 rotates, it needs to overcome a larger friction force. The rotation speed of the barrel shaft 204 is greatly reduced, and the large synchronous pulley 101 is driven to rotate at a smaller rotation speed. When the distance between the two rubber pads increases, the friction between the friction plate and the friction plate decreases. When the barrel shaft 204 rotates, it needs to overcome a smaller friction force. The rotation speed reduction of the barrel shaft 204 is smaller, and the large synchronous pulley 101 is driven to rotate at a larger rotation speed.

[0047] The first barrel bracket 202 is hinged to the second barrel bracket 203, the bottom end of the first barrel bracket 202 is rotatably connected to the bottom of the barrel 201, and the top end of the second barrel bracket 203 is fixedly connected to the flange 105. The first barrel bracket 202 and the second barrel bracket 203 are used to prevent the filament bundle 002 on the surface of the barrel 201 from sliding off.

[0048] The tensioning group includes a plurality of tension wheels 401, a plurality of No. 1 connecting rods 402, a plurality of grooves 403, a No. 2 connecting rod 404 and a frame 408. The present invention preferably has three tension wheels 401, two on both sides and one on the bottom. The frame 408 is vertically fixed below the flange 105. The tension wheels 401 are provided with a plurality of grooves 403. The present invention preferably has two grooves 403, which can tension and guide two strands of yarn 002 at the same time. A No. 1 connecting rod 402 is fixedly provided below the upper tension wheel 401, and the No. 1 connecting rod 402 is rotatably provided on the front side of the frame 408. A No. 2 connecting rod 404 is fixedly provided below the lower tension wheel 401.

[0049] The adjusting member includes a guide rail 405, a slider 406 and an elastic element 407. The present invention preferably uses a spring as the elastic element 407. The guide rail 405 is fixedly arranged on the front of the frame 408. The slider 406 is arranged above the guide rail 405 and can slide back and forth along the guide rail 405. The elastic element 407 is located above the guide rail 405, and one end of the elastic element 407 is fixedly connected to the guide rail 405, and the other end is fixedly connected to the slider 406. When the tension of the tow 002 on the tension wheel 401 is too large, the tow 002 pulls the tension wheel 401 below to move upward along the guide rail 405, the elastic element 407 stretches, the distance between the tension wheels 401 of the yarn bundle 002 decreases, and the tension decreases. When the tension of the yarn bundle 002 on the tension wheel 401 is too small, the elastic element 407 shortens, pulling the tension wheel 401 below to move downward along the guide rail 405, the distance between the tension wheels 401 increases, the tension increases, and the adjusting member maintains the yarn bundle 002 to be pulled out within a specific tension range.

[0050] The transmission group includes a large synchronous pulley 101, a synchronous belt 102, a small synchronous pulley 103 and a spur gear pair 104. The large synchronous pulley 101 is rotatably arranged on the upper surface of the flange 105, and the axis of the large synchronous pulley 101 is fixedly connected to the upper end of the barrel shaft 204. The barrel shaft 204 drives the large synchronous pulley 101 to rotate.

[0051] The small synchronous pulley 103 is rotatably arranged on the upper surface of the flange 105, and the synchronous belt 102 is sleeved on the outer rings of the large synchronous pulley 101 and the small synchronous pulley 103, so that the large synchronous pulley 101 and the small synchronous pulley 103 keep the same linear speed and rotate synchronously.

[0052] The spur gear pair 104 includes gear one and gear two. The gears are coaxially fixed below the small synchronous pulley 103 and are rotatably connected to the flange 105. Gear two is located on the side of gear one and meshes with gear one. The axis of gear two is fixedly connected to the film collecting shaft 303 and can rotate along the flange 105. Gear two can drive the film collecting shaft 303 to rotate.

[0053] The diameter of the barrel 201 gradually decreases as the tow 002 is drawn out, and the diameter of the film-receiving roller 301 gradually increases as the back film 001 is wound up. Assuming that the diameter of the film-receiving roller 301 is d1, the diameter of the barrel 201 is d2, the diameter of the large synchronous pulley 101 is n1, and the diameter of the small synchronous pulley 103 is n2, the linear velocity v1 of the film-receiving roller 301 is:

[0054]

[0055] Barrel 201 Linear Speed ​​v2:

[0056]

[0057] The linear velocity of the film-collecting roller 301 is controlled to be always greater than the linear velocity of the barrel 201, v1>v2, that is:

[0058]

[0059] After simplification, we get:

[0060]

[0061] That is, the ratio of the diameter of the large synchronous pulley 101 to the diameter of the small synchronous pulley 103 is greater than the ratio of the diameter of the barrel 201 to the diameter of the film-receiving roller 301, so that the linear speed of the film-receiving roller 301 is always greater than the linear speed of the barrel 201, and the back film 001 is rolled up in time.

[0062] The back film 001 and the filament bundle 002 are simultaneously drawn out from the barrel 201 and passed through the film-collecting roller 301, the back film 001 is wound around the film-collecting roller 301 for winding, and the filament bundle 002 is continuously drawn out and passes through the groove 403 of the right tension wheel 401, the groove 403 of the lower tension wheel 401 and the groove 403 of the left tension wheel 401 in sequence, the groove 403 around which the same strand of filament bundle 002 passes is located in the same plane, so as to prevent the filament bundle 002 from crossing and causing entanglement, and finally the filament bundle 002 is drawn out from the groove 403 of the left tension wheel 401 and enters the next process; the drawing out of the filament bundle 002 drives the barrel shaft 204 to rotate, and the barrel shaft 204 drives the large synchronous pulley 101 to rotate, and the large synchronous pulley 101 drives the large synchronous pulley 101 to rotate. The dynamic synchronous belt 102 rotates, and the synchronous belt 102 drives the small synchronous pulley 103 to rotate, and the small synchronous pulley 103 drives the spur gear pair 104 to rotate, and the spur gear pair 104 drives the film collection shaft 303 to rotate, and the film collection shaft 303 drives the film collection shaft 303 to rotate through the friction force of the friction core 302 to reel in the back film 001; when the tension of the tow 002 is too large, and the pulling force of the tow 002 on the tension wheel 401 below is greater than the pulling force of the elastic element 407, the tension wheel 401 below is pulled upward, and the slider 406 is driven by the second connecting rod 404 to slide upward along the guide rail 405, the elastic element 407 is stretched, and the distance between the tension wheel 401 below and the tension wheel 401 above is shortened, and the tow 002 is shortened in distance through the tensioning section 4, thereby reducing the tension of the yarn bundle 002; when the tension of the yarn bundle 002 is too small, and the pulling force of the yarn bundle 002 on the tension wheel 401 below is less than the pulling force of the elastic element 407, the tension wheel 401 below is pulled downward, and the slider 406 is driven to slide downward along the guide rail 405 through the No. 2 connecting rod 404, the elastic element 407 contracts, and the distance between the tension wheel 401 below and the tension wheel 401 above is enlarged, and the distance that the yarn bundle 002 is passed through the tensioning section 4 is extended, thereby increasing the tension of the yarn bundle 002; the tension of the yarn bundle 002 is adjusted by adjusting the distance between the tension wheel 401 below and the tension wheel 401 above, so that the yarn bundle 002 is maintained at Within a constant tension range, the stable drawing process can be ensured without breaking the yarn bundle 002. When the tension of the back film 001 wound on the film-collecting roller 301 is too large, greater than the friction between the friction core 302 and the inner surface of the film-collecting roller 301, relative sliding occurs between the friction core 302 and the film-collecting roller 301, and the film-collecting roller 301 no longer rotates with the friction core 302. As the back film 001 is drawn out, the tension of the back film 001 on the film-collecting roller 301 gradually decreases. When its tension is less than the friction between the friction core 302 and the inner surface of the film-collecting roller 301, the friction core 302 drives the film-collecting roller 301 to rotate together, and continues to wind up the back film 001, preventing the back film 001 from being broken due to excessive tension.

[0063] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above in the form of preferred embodiments, it is not intended to limit the present invention. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An active film collecting device for a wire feeding system of an automatic wire laying machine, characterized in that: include: A barrel portion (2), the barrel portion (2) comprising a barrel shaft (204), the barrel portion (2) being used to store a backing film (001) and a filament bundle (002), the backing film (001) and the filament bundle (002) being wound around the barrel shaft (204); A film collecting part (3), wherein the film collecting part (3) comprises a film collecting roller (301), a friction core (302) and a film collecting shaft (303); the film collecting shaft (303) is coaxially rotatable and arranged inside the film collecting roller (301); the friction core (302) is fixedly arranged on the top of the film collecting shaft (303) and can rotate along the inner wall of the film collecting roller (301); when the film collecting shaft (303) rotates, the friction core (302) is driven to rotate; the friction core (302) drives the film collecting roller (301) to rotate through friction; when the film collecting roller (301) rotates, the back film (001) is wound around its surface; when the tension of the back film (001) on the film collecting roller (301) is greater than the friction between the friction core (302) and the inner wall of the film collecting roller (301), the friction core (302) and the film collecting roller (301) rotate relative to each other, thereby reducing the tension of the back film (001); A wire tensioning section (4), the wire tensioning section (4) comprising a tensioning group and an adjusting member, the tensioning group guides and tensions the wire bundle (002), the adjusting member is used to adjust the tension of the wire bundle (002) on the tensioning group, when the tension is too large, the adjusting member moves upward to reduce the length of the wire bundle (002) on the tensioning group, when the tension is too small, the adjusting member moves downward to increase the length of the wire bundle (002) on the tensioning group; The transmission part (1) comprises a flange (105) and a transmission group, wherein the transmission group is located at the upper part of the flange (105), and the barrel part (2), the film collecting part (3) and the wire stretching part (4) are located at the lower part of the flange (105). When the barrel shaft (204) rotates, the film collecting shaft (303) is driven to rotate through the transmission group.

2. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 1, characterized in that: The barrel portion (2) also includes a barrel (201), a first barrel bracket (202) and a second barrel bracket (203); a hole is opened on the side wall of the barrel (201); the back film (001) and the filament bundle (002) are drawn out from the hole; the barrel shaft (204) is coaxially fixed inside the barrel (201); and the upper end of the barrel shaft (204) is rotatably connected to the flange (105).

3. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 2, characterized in that: A friction plate and two rubber pads are fixedly provided at the upper end of the barrel shaft (204); the friction plate is rotatably arranged between the two rubber pads; the distance between the two rubber pads can be adjusted by bolts; when the distance between the two rubber pads decreases, the friction force between the two rubber pads and the friction plate increases; when the distance between the two rubber pads increases, the friction force between the two rubber pads and the friction plate decreases.

4. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 2, characterized in that: The first barrel support (202) is hinged to the second barrel support (203), the bottom end of the first barrel support (202) is rotatably connected to the bottom of the barrel (201), the top end of the second barrel support (203) is fixedly connected to the flange (105), and the first barrel support (202) and the second barrel support (203) are used to prevent the filament bundle (002) on the surface of the barrel (201) from sliding off.

5. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 1, characterized in that: The tensioning group includes a plurality of tension wheels (401), a plurality of No. 1 connecting rods (402), a plurality of grooves (403), a No. 2 connecting rod (404) and a frame (408). The frame (408) is vertically fixed below the flange (105). The tension wheels (401) are provided with a plurality of grooves (403) for guiding the wire bundle (002). A No. 1 connecting rod (402) is fixed below the upper tension wheel (401). The No. 1 connecting rod (402) is rotatably arranged on the front of the frame (408). A No. 2 connecting rod (404) is fixed below the lower tension wheel (401).

6. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 1, characterized in that: The adjusting member comprises a guide rail (405), a slider (406) and an elastic element (407); the guide rail (405) is fixedly arranged on the front of the frame (408); the slider (406) is arranged above the guide rail (405) and can slide back and forth along the guide rail (405); the elastic element (407) is located above the guide rail (405); one end of the elastic element (407) is fixedly connected to the guide rail (405), and the other end is fixedly connected to the slider (406).

7. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 1, characterized in that: The transmission group comprises a large synchronous pulley (101), a synchronous belt (102), a small synchronous pulley (103) and a spur gear pair (104); the large synchronous pulley (101) is rotatably arranged on the upper surface of a flange (105), and the axis of the large synchronous pulley (101) is fixedly connected to the upper end of a barrel shaft (204).

8. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 7, characterized in that: The small synchronous belt pulley (103) is rotatably arranged on the upper surface of the flange (105), and the synchronous belt (102) is sleeved on the outer rings of the large synchronous belt pulley (101) and the small synchronous belt pulley (103), so that the large synchronous belt pulley (101) and the small synchronous belt pulley (103) rotate synchronously while maintaining the same linear speed.

9. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 7, characterized in that: The spur gear pair (104) includes gear one and gear two. The gears are coaxially fixed below the small synchronous pulley (103) and are rotatably connected to the flange (105). Gear two is located on the side of gear one and meshes with gear one. The axis of gear two is fixedly connected to the film collecting shaft (303) and can rotate along the flange (105).

10. The active film collecting device for the wire feeding system of an automatic wire laying machine according to claim 8, characterized in that: The diameter of the barrel (201) gradually decreases as the filament bundle (002) is withdrawn, and the diameter of the film-receiving roller (301) gradually increases as the backing film (001) is rolled up. Assuming that the diameter of the film-receiving roller (301) is d1, the diameter of the barrel (201) is d2, the diameter of the large synchronous pulley (101) is n1, and the diameter of the small synchronous pulley (103) is n2, the linear speed v1 of the film-receiving roller (301) is: Barrel (201) linear speed v2: The linear velocity of the film collecting roller (301) is controlled to be always greater than the linear velocity of the barrel (201), v1>v2, that is: After simplification, we get: That is, the ratio of the diameter of the large synchronous pulley (101) to the diameter of the small synchronous pulley (103) is greater than the ratio of the diameter of the barrel (201) to the diameter of the film-collecting roller (301).

Images