Pressing device and fiber placement head

Abstract

The invention provides a pressing device and a fiber placement head, and relates to the technical field of fiber placement heads.The pressing device comprises a first support and a second support which are arranged in a laminated mode, a channel for a fiber bundle body to pass through is formed between the first support and the second support, and a first rotating part is rotatably arranged on the first support in the first direction; the part, facing the second bracket, of the first rotating part is exposed in the channel; the second rotating part is rotatably arranged on the second support in the first direction, and the part, facing the first support, of the second rotating part is exposed in the channel. The first rotating part rotates on the first support in a one-way mode, the phenomenon that the tows are drawn back due to the fact that the tows generate tensile force can be avoided, and the technical problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of wire placing heads, and in particular to a pressing device and a wire placing head. Background Art

[0002] In the modern aviation industry, the application of composite materials has become one of the important means to improve the performance of aircraft. Compared with traditional metal materials, composite materials have higher strength-to-weight ratio, better corrosion resistance and fatigue performance, and better thermal expansion characteristics. Therefore, they are widely used in aircraft structures, such as fuselage, wings and tail. Automated Wire Placement (AFP), as an efficient and precise composite molding method, is gradually becoming the mainstream technology in the aviation manufacturing industry.

[0003] In the prior art, tension is generated in the tow during the laying process, causing the tow to be pulled back, thereby affecting the length of each cut tow.

[0004] Therefore, the above technical problems need to be further resolved. Summary of the invention

[0005] The purpose of the present invention is to provide a pressing device and a wire placing head to alleviate the technical problems existing in the above-mentioned related technologies.

[0006] The present invention provides a pressing device, comprising: A first bracket and a second bracket are stacked, wherein a passage for the fiber bundle body to pass through is formed between the first bracket and the second bracket, and the first bracket is used to be connected to the fiber placement head frame body; A first rotating part is rotatably disposed on the first bracket about a first direction, and a portion of the first rotating part facing the second bracket is exposed in the channel; a second rotating portion, rotatably disposed on the second bracket about the first direction, wherein a portion of the second rotating portion facing the first bracket is exposed in the channel; The first rotating part and the second rotating part have a first working state and a second working state. In the first working state, the first rotating part and the second rotating part exposed in the channel rotate toward each other to drive the tow body passing through the channel to move forward. In the second working state, the first rotating part exposed in the channel maintains a stationary state to block the tow body passing through the channel from moving forward. The first direction is perpendicular to a stacking direction of the first bracket and the second bracket.

[0007] Optionally, in the aforementioned pressing device, the first bracket has a first hollow along the second direction, and at least one group of recessed portions is provided on a side surface of the first bracket opposite to the second bracket, each group of recessed portions includes two grooves, the two grooves are arranged along the third direction, and the first hollow is located between the two grooves; The second bracket has a second hollowing out along the second direction, the first hollowing out is aligned with the second hollowing out, and the second bracket has at least one group of protrusions corresponding to at least one group of recessed parts on a side surface opposite to the first bracket, the protrusions and the recessed parts correspond one to one in the second direction, each group of the protrusions includes two protrusions, the two protrusions are arranged along the third direction, and the second hollowing out is located between the two protrusions, the protrusion located on the same side of the first hollowing out and the second hollowing out is embedded in the groove to enclose a accommodating space with two openings opposite to each other along the third direction, and the two corresponding accommodating spaces along the third direction form a channel, the part of the first rotating part facing the second bracket is exposed in the channel through the first hollowing out, and the part of the second rotating part facing the first bracket is exposed in the channel through the second hollowing out; the second direction is the stacking direction of the first bracket and the second bracket, and the third direction is perpendicular to the first direction and the second direction.

[0008] Optionally, in the aforementioned pressing device, the first rotating part comprises: A rotating shaft, wherein both ends of the rotating shaft opposite to each other are provided with pressure rollers, and the pressure rollers are connected to the first bracket; at least one rotating wheel, the rotating wheel being rotatably connected to the rotating shaft via a one-way bearing; The portion of the rotating wheel facing the second bracket is exposed through the first hollowing, the number of the rotating wheels is the same as the number of the filament bundle bodies and corresponds one to one, and the axis extension direction of the rotating shaft is the same as the first direction.

[0009] Optionally, in the aforementioned pressing device, the second rotating part comprises: At least one rotating wheel is rotatably connected to the second hollow structure, and the number of the rotating wheels is the same as the number of the filament bundle bodies and corresponds one to one.

[0010] Optionally, the aforementioned pressing device further comprises: A support frame, wherein the support frame has a straight section and a convex section, the convex section is arranged on the straight section, and the straight section and the convex section are perpendicular to each other, the straight section is connected to the second bracket, one end of the convex section away from the straight section passes through the second hollow, and one end of the convex section is rotatably connected to the rotating wheel; The number of the rotating wheels is the same as the number of the supporting frames and corresponds one to one.

[0011] Optionally, the aforementioned pressing device further comprises: A driving mechanism, wherein an output end of the driving mechanism is drivingly connected to the second bracket, and the driving mechanism is used to be connected to the wire placement head frame body; Among them, the straight section is movably connected to the second bracket, and the driving mechanism drives the second bracket to move closer to or away from the direction of the wire placing head frame body to adjust the interval distance between the rotating wheel and the rotating wheel, so that the rotating wheel cooperates with the rotating wheel to press the wire bundle body or release the pressing of the wire bundle body.

[0012] Optionally, in the aforementioned pressing device, the driving mechanism comprises: Two clamping cylinders, each of which is provided with a mounting seat at the cylinder end thereof, the mounting seat being used to be connected to the wire placing head frame body, the telescopic end of each clamping cylinder being connected to the second bracket, and the second rotating part being located between the two clamping cylinders.

[0013] Optionally, in the aforementioned pressing device, one end of each of the straight sections is hinged to the second bracket, and the other end of each of the straight sections is connected to the second bracket via a bolt; Wherein, a spring is arranged between the bolt and a side of the corresponding straight section facing away from the second bracket.

[0014] Optionally, in the aforementioned pressing device, an area enclosed by a cross section of each of the grooves along the first direction gradually increases along the third direction.

[0015] On the other hand, the present application provides a wire placing head, comprising: The clamping device comprises: A first bracket and a second bracket are stacked, wherein a passage for the fiber bundle body to pass through is formed between the first bracket and the second bracket, and the first bracket is used to be connected to the fiber placement head frame body; A first rotating part is rotatably disposed on the first bracket about a first direction, and a portion of the first rotating part facing the second bracket is exposed in the channel; a second rotating portion, rotatably disposed on the second bracket about the first direction, wherein a portion of the second rotating portion facing the first bracket is exposed in the channel; The first rotating part and the second rotating part have a first working state and a second working state. In the first working state, the first rotating part and the second rotating part exposed in the channel rotate toward each other to drive the tow body passing through the channel to move forward. In the second working state, the first rotating part exposed in the channel maintains a stationary state to block the tow body passing through the channel from moving forward. The first direction is perpendicular to a stacking direction of the first bracket and the second bracket.

[0016] By means of the above technical solution, the pressing device and the wire placing head of the present application have at least the following advantages: The clamping device provided in the embodiment of the present application can avoid the phenomenon that the yarn bundle will generate tension and cause the yarn bundle to be pulled back by performing unidirectional rotation on the first bracket through the first rotating part, thereby effectively solving the technical problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a first viewing angle of a pressing device provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a second viewing angle of a pressing device provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a first rotating portion of a pressing device provided by an embodiment of the present invention from a first viewing angle; Figure 4 A structural schematic diagram of a first rotating part of a pressing device provided by an embodiment of the present invention from a second viewing angle; Figure 5 A schematic structural diagram of a second bracket of a clamping device provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of a second rotating portion of a pressing device provided by an embodiment of the present invention from a first viewing angle; Figure 7 A schematic structural diagram of a second rotating portion of a pressing device provided by an embodiment of the present invention from a second viewing angle; Figure 8 A schematic structural diagram of a support frame of a clamping device provided by an embodiment of the present invention from a first perspective; Fig. 9A schematic structural diagram from a second perspective of a support frame of a clamping device provided in an embodiment of the present invention.

[0019] icon: 1. First bracket; 2. Second bracket; 3. Channel; 4. First rotating part; 41. Rotating shaft; 42. Rotating wheel; 43. One-way bearing; 44. Pressure roller; 45. One-way bearing spacer; 46. Pressure washer; 47. Retaining ring; 5. Second rotating part; 51. Rotating wheel; 52. Rotating shaft; 53. Pressure rotating wheel spacer; 6. First hollow; 7. Second hollow; 8. Groove; 9. Protrusion; 10. Support frame; 11. Clamping cylinder; 12. Bolt; 13. Spring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1 like Figure 1-Figure 2 As shown, the pressing device proposed in the embodiment of the present invention includes: A first bracket 1 and a second bracket 2 are stacked, wherein a passage 3 for the fiber bundle body to pass through is formed between the first bracket 1 and the second bracket 2, and the first bracket 1 is used to be connected to the fiber placement head frame body; A first rotating portion 4 is rotatably disposed on the first bracket 1 around a first direction, and a portion of the first rotating portion 4 facing the second bracket 2 is exposed in the channel 3; A second rotating portion 5 is rotatably disposed on the second bracket 2 around the first direction, and a portion of the second rotating portion 5 facing the first bracket 1 is exposed in the channel 3; The first rotating part 4 and the second rotating part 5 have a first working state and a second working state. In the first working state, the first rotating part 4 and the second rotating part 5 exposed in the channel 3 rotate toward each other to drive the tow body passing through the channel 3 to move forward. In the second working state, the first rotating part 4 exposed in the channel 3 maintains a stationary state to block the tow body passing through the channel 3 from moving forward. The first direction is perpendicular to the stacking direction of the first bracket 1 and the second bracket 2 .

[0024] Specifically, the first bracket 1 and the second bracket 2 are connected in a detachable manner, for example, by bolts 12. The first bracket 1 is also used to be detachably connected to the wire placement head frame body, for example, by bolts 12. The first bracket 1 is provided with a first rotating part 4, and the second bracket 2 is provided with a second rotating part 5. The first rotating part 4 is opposite to the second rotating part 5. The part of the first rotating part 4 facing the second bracket 2 is exposed in the channel 3, and the part of the second rotating part 5 facing the first bracket 1 is exposed in the channel 3. The channel 3 is used In the channel 3 for the yarn bundle body to pass through, in a first working state, the first rotating part 4 and the second rotating part 5 exposed in the channel 3 rotate towards each other to drive the yarn bundle body passing through the channel 3 to move forward; in a second working state, the first rotating part 4 exposed in the channel 3 maintains a stationary state to block the movement of the yarn bundle body passing through the channel 3, wherein the movement direction of the yarn bundle body in the channel 3 is perpendicular to the first direction, for example: the channel 3 is longitudinal, that is, from top to bottom or from bottom to top, then the first direction is transverse, that is, from left to right or from right to left.

[0025] The clamping device provided in the embodiment of the present invention can avoid the phenomenon that the yarn bundle will generate tension and cause the yarn bundle to be pulled back by performing unidirectional rotation on the first bracket 1 through the first rotating part 4, thereby effectively solving the technical problems existing in the prior art.

[0026] like Figure 1-Figure 5 As shown, in a specific implementation, the first bracket 1 has a first hollow 6 along the second direction, and at least one group of recessed portions is provided on a side surface of the first bracket 1 opposite to the second bracket 2, each group of recessed portions includes two grooves 8, the two grooves 8 are arranged along the third direction, and the first hollow 6 is located between the two grooves 8; The second bracket 2 has a second hollow 7 along the second direction, the first hollow 6 is aligned with the second hollow 7, and at least one group of protrusions corresponding to at least one group of recessed portions is arranged on the side surface of the second bracket 2 opposite to the first bracket 1, and the protrusions correspond to the recessed portions one by one in the second direction, each group of the protrusions includes two protrusions 9, the two protrusions 9 are arranged along the third direction, and the second hollow 7 is located between the two protrusions 9, the protrusions 9 located on the same side of the first hollow 6 and the second hollow 7 are embedded in the groove 8 to enclose a accommodating space with two openings opposite to each other along the third direction, and the two corresponding accommodating spaces along the third direction form a channel 3, the part of the first rotating part 4 facing the second bracket 2 is exposed in the channel 3 through the first hollow 6, and the part of the second rotating part 5 facing the first bracket 1 is exposed in the channel 3 through the second hollow 7; the second direction is the stacking direction of the first bracket 1 and the second bracket 2, and the third direction is perpendicular to the first direction and the second direction.

[0027] Specifically, the first hollow 6 is used to expose the first rotating part 4 mounted on the first bracket 1 toward the second bracket 2, so that the first rotating part 4 can rotate in conjunction with the second rotating part 5 to drive the tow body passing through the channel 3 to move forward.

[0028] The second hollowing 7 is used to expose the second rotating part 5 mounted on the second bracket 2 toward the first bracket 1, so that the second rotating part 5 can rotate in coordination with the first rotating part 4 to drive the tow body passing through the channel 3 to move forward.

[0029] Two grooves 8 are provided on a surface of the first bracket 1 opposite to the second bracket 2. The two grooves 8 are located on both sides of the first hollow 6, and the two grooves 8 are arranged along the third direction. Figure 4 As shown in the figure, the third direction is the vertical direction in the figure, and the two grooves 8 located in the same vertical direction are a group of recessed parts. At least one group of recessed parts is provided on the first bracket 1. If the number of recessed parts is two or more, the multiple groups of recessed parts are arranged along the first direction (such as Figure 4 As shown in the figure, the first direction is the lateral direction in the figure) and is arranged at intervals, wherein the number of groups of the recessed portions matches the number of groups of the filament bundle bodies and corresponds one to one.

[0030] Two protrusions 9 are provided on the surface of the second bracket 2 opposite to the first bracket 1, and the two protrusions 9 are located on both sides of the second hollow 7, and the two protrusions 9 are arranged along the third direction. The two protrusions 9 located in the same vertical direction are a group of protrusions. At least one group of protrusions is provided on the second bracket 2. If the number of protrusions is two or more, the multiple groups of protrusions are arranged at intervals along the first direction, wherein the number of groups of protrusions is the same as the number of groups of recessed parts, and they correspond one to one.

[0031] A group of recessed parts and a group of raised parts are matched and plugged, that is, a protrusion 9 is inserted into a groove 8. The following is an example of a group of recessed parts and a group of raised parts plugged together: When the first bracket 1 is connected to the second bracket 2, the protrusion 9 located on the same side of the first hollow 6 and the second hollow 7 is inserted into the groove 8 on the same side to enclose a accommodating space having two openings opposite to each other along the third direction. The two accommodating spaces are connected by the first hollow 6 and the second hollow 7, and a channel 3 is formed for the filament bundle body to pass through. The number of channels 3 is the same as the number of filament bundle bodies and corresponds one to one. The part of the first rotating part 4 facing the second bracket 2 is exposed in the channel 3 through the first hollow 6, and the part of the second rotating part 5 facing the first bracket 1 is exposed in the channel 3 through the second hollow 7.

[0032] like Figure 1-Figure 4 as well as Figure 6-Figure 7 As shown, in a specific implementation, the first rotating part 4 includes: A rotating shaft 41, wherein both opposite ends of the rotating shaft 41 are provided with pressure rollers 44, and the pressure rollers 44 are connected to the first bracket 1; at least one rotating wheel 42, wherein the rotating wheel 42 is rotatably connected to the rotating shaft 41 via a one-way bearing 43; The portion of the rotating wheel 42 facing the second bracket 2 is exposed through the first hollowing 6, the number of the rotating wheels 42 is the same as the number of the tow bodies and corresponds one to one, and the axial extension direction of the rotating shaft 41 is the same as the first direction.

[0033] Specifically, the present application provides an implementation of a first rotating part 4 , that is, the first rotating part 4 includes a rotating shaft 41 and at least one rotating wheel 42 .

[0034] Pressure rollers 44 are provided at both ends of the rotating shaft 41 . The pressure rollers 44 are detachably connected to the rotating shaft 41 via bolts 12 . Each pressure roller 44 is detachably connected to the first support via bolts 12 .

[0035] The axial extension direction of the rotating shaft 41 is the same as the first direction. If the number of the rotating wheels 42 is two or more, the multiple rotating wheels 42 are arranged in sequence along the axial extension direction of the rotating shaft 41. The number of the rotating wheels 42 is the same as the number of the filament bundle bodies and corresponds one to one.

[0036] The rotating wheel 42 is connected to the rotating shaft 41 by a one-way bearing 43, and the one-way rotation of the rotating wheel 42 can achieve the effect of locking and limiting, thereby avoiding the phenomenon that the tow will generate tension and cause the tow to be pulled back, and effectively solves the technical problems existing in the prior art. The rotating wheel 42 passes through the first hollow 6 on the first bracket 1, so that the part of the rotating wheel 42 facing the second bracket 2 is exposed in the channel 3.

[0037] Each rotating wheel 42 is provided with a one-way bearing 43 spacer on both side surfaces along the axial extension direction of the rotating shaft 41. The one-way bearing 43 spacer can protect the rotating wheel 42. When there are multiple rotating wheels 42, the one-way bearing 43 spacer can make the distance between each rotating wheel 42 consistent with the distance between the filament bundle bodies.

[0038] A compression washer 46 is disposed between each rotating wheel 42 and the corresponding one-way bearing 43 to fill the gap between the rotating wheel 42 and the one-way bearing 43 and disperse the load.

[0039] Each rotating wheel 42 is provided with retaining rings 47 on both sides along the axial extension direction of the rotating shaft 41 . The retaining rings 47 are used to fix the one-way bearing 43 corresponding to the rotating wheel 42 to prevent the one-way bearing 43 from falling off in the corresponding rotating wheel 42 .

[0040] In a specific implementation, the second rotating part 5 includes: At least one rotating wheel 51, wherein the rotating wheel 51 is rotatably connected to the second hollow portion 7, and the number of the rotating wheels 51 is the same as the number of the filament bundle bodies and corresponds one to one.

[0041] Specifically, the rotating wheel 51 is rotatably connected to the second hollow 7 via the rotating shaft 52 , and the rotating wheel 51 can also be rotatably connected to the second hollow 7 via other auxiliary structures. In addition, the portion of the rotating wheel 51 facing the first bracket 1 is exposed through the second hollow 7 .

[0042] The number of the rotating wheels 51 matches the number of the rotating wheels 42 and corresponds one to one. When the number of the rotating wheels 51 is two or more, the arrangement of the rotating wheels 51 is the same as the arrangement of the rotating wheels 42 .

[0043] When the rotating wheel 51 cooperates with the rotating wheel 42 in the first working state, the rotating wheel 42 exposed in the channel 3 and the rotating wheel 51 corresponding to the rotating wheel 42 rotate in opposite directions to drive the yarn bundle body passing through the channel 3 to move forward; when in the second working state, the rotating wheel 42 exposed in the channel 3 maintains a stationary state to block the movement of the yarn bundle body passing through the channel 3.

[0044] like Figure 1-Figure 2 as well as Figure 8-Figure 9 As shown, in a specific implementation, it also includes: A support frame 10, wherein the support frame 10 has a straight section and a convex section, wherein the convex section is arranged on the straight section, and the straight section and the convex section are perpendicular to each other, the straight section is connected to the second bracket 2, one end of the convex section away from the straight section passes through the second hollow 7, and one end of the convex section is rotatably connected to the rotating wheel 51; The number of the rotating wheels 51 is the same as the number of the supporting frames 10 and corresponds one to one.

[0045] Specifically, the present application provides a method for installing the rotating wheel 51 , that is, the rotating wheel 51 is installed on the second bracket 2 through the supporting frame 10 .

[0046] A rotating wheel 51 is adapted to a supporting frame 10, and each supporting frame 10 has a straight section and a raised section, wherein the straight section is in the shape of an "I", and the raised section is in the shape of an "I", the straight section is connected to the raised section, and the straight section and the raised section are perpendicular to each other, and the connection between the raised section and the straight section is located in the middle of the straight section, and the end of the raised section away from the straight section is rotatably connected to the rotating wheel 51.

[0047] The straight section is connected to a side of the second bracket 2 away from the first bracket 1 along the third direction, so that an end of the raised section away from the straight section passes through the second hollow 7 and faces the corresponding rotating wheel 42 .

[0048] The end of the raised section away from the straight section is provided with a rotating shaft 52, and a rotating wheel 51 is sleeved on the rotating shaft 52, and the rotating wheel 51 is rotatably connected to the rotating shaft 52. The rotating shaft 52 and the raised section are connected in a detachable manner, for example, by bolts 12. The raised section and the straight section are cast into an integral structure by integrally processing and casting. A spacer for clamping the rotating wheel 51 is provided between the rotating wheel 51 and one end of the corresponding raised section, and the spacer for clamping the rotating wheel 51 is mainly used to reduce the wear between the rotating wheel 51 and the support frame 10.

[0049] like Figure 1-Figure 2 As shown, in a specific implementation, it also includes: A driving mechanism, wherein the output end of the driving mechanism is drivingly connected to the second bracket 2, and the driving mechanism is used to be connected to the wire placement head frame body; Among them, the straight section is movably connected to the second bracket 2, and the driving mechanism drives the second bracket 2 to move closer to or away from the direction of the wire placing head frame body to adjust the spacing distance between the rotating wheel 42 and the rotating wheel 51, so that the rotating wheel 42 cooperates with the rotating wheel 51 to press the wire bundle body or release the pressing of the wire bundle body.

[0050] Specifically, the support frame 10 is movably connected to the second support frame 2, and the driving mechanism is connected to the second support frame 2. When the driving mechanism drives the second support frame 2 to retract in the direction of the first support frame 1, the support frame 10 moves in the direction away from the first support frame 1, so that the rotating wheel 51 and the corresponding rotating wheel 42 press the yarn bundle body between the two; when the driving mechanism drives the second support frame 2 to stretch in the direction of the first support frame 1, the support frame 10 and the second support frame 2 are close to each other to release the state in which the rotating wheel 51 and the corresponding rotating wheel 42 press the yarn bundle body between the two. This structural design enables the device to control the yarn bundle body well and avoid the problem of position change of the yarn bundle body.

[0051] like Figure 1-Figure 2 As shown, in a specific implementation, the driving mechanism includes: Two clamping cylinders 11, each of which is provided with a mounting seat at the cylinder end thereof, and the mounting seat is used to be connected to the wire placing head frame body, the telescopic end of each of which is connected to the second bracket 2, and the second rotating part 5 is located between the two clamping cylinders 11.

[0052] Specifically, the present application provides an implementation of a driving mechanism, that is, the driving mechanism includes: two clamping cylinders 11, each clamping cylinder 11 is connected to the wire laying head frame body through a mounting seat, and the connection method can be detachable, for example, bolt 12 connection, the output ends of the two clamping cylinders 11 are connected to the second bracket 2, the output ends of the two clamping cylinders 11 are symmetrical with respect to the second hollow 7 of the second bracket 2, and the telescopic ends of the two clamping cylinders 11 move synchronously. The telescopic end of each clamping cylinder 11 is detachably connected to the second bracket 2, for example, bolt 12 connection, plug-in or inlay connection, and this structural design can facilitate the later maintenance of technicians.

[0053] like Figure 2 as well as Figure 8-Figure 9 As shown, in a specific implementation, one end of each of the straight sections is hinged to the second bracket 2, and the other end of each of the straight sections is connected to the second bracket 2 via a bolt 12; A spring 13 is provided between the bolt 12 and the corresponding straight section on a side facing away from the second bracket 2 .

[0054] Specifically, the present application provides a way of movably connecting the support frame 10 with the second bracket 2, that is, one end of the straight section of the support frame 10 is hinged to the second bracket 2 through a pin shaft, and the other end of the straight section is connected to the second bracket 2 through a bolt 12, and a spring 13 is arranged between the bolt 12 and the straight section.

[0055] The number of springs 13 is the same as the number of support frames 10, and they correspond one to one. The springs 13 are used to provide a rebound force so that the rotating wheel 51 and the corresponding rotating wheel 42 press the tow body between them to achieve the effect of fixing the position of the tow body. It should be noted that fixing the position of the tow body does not limit whether the tow body can move in the corresponding channel 3. What is fixed is the moving track of the tow body in the corresponding channel 3, so as to prevent the moving track of the tow body in the corresponding channel 3 from being offset or deviating from the corresponding rotating wheel 51 and the rotating wheel 42.

[0056] The above method can facilitate the installation of the support frame 10. No matter there are one or more support frames 10, technicians can quickly install the support frame 10 on the second bracket 2. When one or more support frames 10 are damaged, technicians can also easily repair and replace them.

[0057] The purpose of the hinge is to facilitate the support frame 10 to move away from or close to the second bracket 2 as the driving mechanism moves, and to compress or release the compression state of the corresponding tow body between the rotating wheel 51 and the corresponding rotating wheel 42.

[0058] When the driving mechanism drives the second bracket 2 to retract in the direction of the first bracket 1, the support frame 10 moves in the direction away from the first bracket 1, and the spring 13 is compressed. Under the action of the elastic force, the compressed spring 13 provides a rebound force for the corresponding rotating wheel 51, so that the rotating wheel 51 and the corresponding rotating wheel 42 press the yarn bundle body between the two; when the driving mechanism drives the second bracket 2 to stretch in the direction of the first bracket 1, the support frame 10 and the second bracket 2 approach each other, and the spring 13 slowly returns to its original state as the support frame 10 and the second bracket 2 approach each other, and gradually reduces the resistance force on the corresponding rotating wheel 51, so as to release the state in which the rotating wheel 51 and the corresponding rotating wheel 42 press the yarn bundle body between the two. This structural design enables the device to control the yarn bundle body well and avoid the problem of position change of the yarn bundle body.

[0059] like Figure 4 As shown, in a specific implementation, the area enclosed by the cross section of each of the grooves 8 along the first direction gradually increases along the third direction.

[0060] Specifically, this structural design can facilitate the fiber bundle body to enter the corresponding channel 3.

[0061] Embodiment 2 like Figure 1-Figure 9 As shown, the second embodiment of the present invention provides a wire placing head, comprising: A clamping device, the clamping device comprising: A first bracket 1 and a second bracket 2 are stacked, wherein a passage 3 for the fiber bundle body to pass through is formed between the first bracket 1 and the second bracket 2, and the first bracket 1 is used to be connected to the fiber placement head frame body; A first rotating portion 4 is rotatably disposed on the first bracket 1 around a first direction, and a portion of the first rotating portion 4 facing the second bracket 2 is exposed in the channel 3; A second rotating portion 5 is rotatably disposed on the second bracket 2 around the first direction, and a portion of the second rotating portion 5 facing the first bracket 1 is exposed in the channel 3; The first rotating part 4 and the second rotating part 5 have a first working state and a second working state. In the first working state, the first rotating part 4 and the second rotating part 5 exposed in the channel 3 rotate toward each other to drive the tow body passing through the channel 3 to move forward. In the second working state, the first rotating part 4 exposed in the channel 3 maintains a stationary state to block the tow body passing through the channel 3 from moving forward. The first direction is perpendicular to the stacking direction of the first bracket 1 and the second bracket 2 .

[0062] Specifically, the wire placing head in the second embodiment can directly use the pressing device provided in the first embodiment above. The specific implementation structure can refer to the relevant content described in the first embodiment above, and will not be repeated here.

[0063] The wire laying head provided in the second embodiment of the present invention uses the clamping device provided in the above-mentioned first embodiment, which can avoid the phenomenon that the wire bundle will generate tension and cause the wire bundle to be pulled back through the first rotating part 4 to perform unidirectional rotation on the first bracket 1, thereby effectively solving the technical problems existing in the prior art.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping device, characterized in that: include: A first bracket and a second bracket are stacked, wherein a passage for the fiber bundle body to pass through is formed between the first bracket and the second bracket, and the first bracket is used to be connected to the fiber placement head frame body; A first rotating part is rotatably disposed on the first bracket about a first direction, and a portion of the first rotating part facing the second bracket is exposed in the channel; a second rotating portion, rotatably disposed on the second bracket about the first direction, wherein a portion of the second rotating portion facing the first bracket is exposed in the channel; The first rotating part and the second rotating part have a first working state and a second working state. In the first working state, the first rotating part and the second rotating part exposed in the channel rotate toward each other to drive the tow body passing through the channel to move forward. In the second working state, the first rotating part exposed in the channel maintains a stationary state to block the tow body passing through the channel from moving forward. The first direction is perpendicular to a stacking direction of the first bracket and the second bracket.

2. The pressing device according to claim 1, characterized in that: The first bracket has a first hollow along the second direction, and at least one group of recessed parts is provided on a side surface of the first bracket opposite to the second bracket, each group of recessed parts includes two grooves, the two grooves are arranged along the third direction, and the first hollow is located between the two grooves; The second bracket has a second hollowing out along the second direction, the first hollowing out is aligned with the second hollowing out, and the second bracket has at least one group of protrusions corresponding to at least one group of recessed parts on a side surface opposite to the first bracket, the protrusions and the recessed parts correspond one to one in the second direction, each group of protrusions includes two protrusions, the two protrusions are arranged along the third direction, and the second hollowing out is located between the two protrusions, the protrusion located on the same side of the first hollowing out and the second hollowing out is embedded in the groove to enclose a receiving space with two openings opposite to each other along the third direction, and the two corresponding receiving spaces along the third direction form a channel, the part of the first rotating part facing the second bracket is exposed in the channel through the first hollowing out, and the part of the second rotating part facing the first bracket is exposed in the channel through the second hollowing out; The second direction is a stacking direction of the first bracket and the second bracket, and the third direction is perpendicular to the first direction and the second direction.

3. The pressing device according to claim 2, characterized in that: The first rotating part comprises: A rotating shaft, wherein both ends of the rotating shaft opposite to each other are provided with pressure rollers, and the pressure rollers are connected to the first bracket; at least one rotating wheel, the rotating wheel being rotatably connected to the rotating shaft via a one-way bearing; The portion of the rotating wheel facing the second bracket is exposed through the first hollowing, the number of the rotating wheels is the same as the number of the filament bundle bodies and corresponds one to one, and the axis extension direction of the rotating shaft is the same as the first direction.

4. The pressing device according to claim 3, characterized in that: The second rotating part comprises: At least one rotating wheel is rotatably connected to the second hollow structure, and the number of the rotating wheels is the same as the number of the filament bundle bodies and corresponds one to one.

5. The pressing device according to claim 4, characterized in that: Also includes: A support frame, wherein the support frame has a straight section and a convex section, the convex section is arranged on the straight section, and the straight section and the convex section are perpendicular to each other, the straight section is connected to the second bracket, one end of the convex section away from the straight section passes through the second hollow, and one end of the convex section is rotatably connected to the rotating wheel; The number of the rotating wheels is the same as the number of the supporting frames and corresponds one to one.

6. The pressing device according to claim 5, characterized in that: Also includes: A driving mechanism, wherein an output end of the driving mechanism is drivingly connected to the second bracket, and the driving mechanism is used to be connected to the wire placement head frame body; Among them, the straight section is movably connected to the second bracket, and the driving mechanism drives the second bracket to move closer to or away from the direction of the wire placing head frame body to adjust the interval distance between the rotating wheel and the rotating wheel, so that the rotating wheel cooperates with the rotating wheel to press the wire bundle body or release the pressing of the wire bundle body.

7. The pressing device according to claim 6, characterized in that: The driving mechanism comprises: Two clamping cylinders, each of which is provided with a mounting seat at the cylinder end thereof, the mounting seat being used to be connected to the wire placing head frame body, the telescopic end of each clamping cylinder being connected to the second bracket, and the second rotating part being located between the two clamping cylinders.

8. The pressing device according to claim 6, characterized in that: One end of each of the straight sections is hinged to the second bracket, and the other end of each of the straight sections is connected to the second bracket via bolts; Wherein, a spring is arranged between the bolt and a side of the corresponding straight section facing away from the second bracket.

9. The pressing device according to claim 2, characterized in that: An area enclosed by a cross section of each of the grooves along the first direction gradually increases along the third direction.

10. A wire placing head, characterized in that: include: A clamping device as claimed in any one of claims 1 to 9.

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