Yarn conveying mechanism and yarn placement machine

Abstract

The invention relates to a yarn conveying mechanism and a yarn placement machine, and the yarn conveying mechanism comprises a yarn fixing row, a yarn left-right moving assembly and a yarn up-down overturning assembly; the yarn fixing row can fix yarns; a driving main shaft is installed on a machine frame of the fiber placement machine, and a special-shaped wheel is installed on the driving main shaft. A driving motor of the fiber placement machine is sequentially in transmission connection with a driving main shaft and a special-shaped wheel, and the special-shaped wheel is in transmission connection with a yarn up-and-down overturning assembly and a yarn left-and-right moving assembly. The special-shaped wheel is in transmission connection with the yarn up-and-down overturning assembly and the yarn left-and-right moving assembly, overturning and left-and-right moving of the yarn fixing row are achieved, a yarn conveying mechanism is more exquisite, and the complexity of operation and maintenance of the yarn placement machine is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wire laying equipment, and in particular to a yarn conveying mechanism and a wire laying machine. Background Art

[0002] With the need for heating or physical therapy and health care, various heating daily necessities such as electric blankets, hand warmers, heating pads, etc. have become popular. During the production and manufacturing process of these daily necessities, the wire laying machine lays and fixes the heating wires, such as carbon fiber heating wires, graphene heating wires, etc., to the substrate (such as non-woven fabric) in a winding manner through yarn. Among them, the heating wire needs to be connected to the conductive wire before it can be powered on and heated, so the conductive wire also needs to be laid and fixed to the substrate. At present, many of the laying and fixing of the conductive wires are achieved by manual operation, which is relatively inefficient. Especially when the laying area is relatively large, not only is the operating efficiency low, but it is also prone to problems of irregular operation.

[0003] The inventors found that if the conveying mechanism of the heating wire in the wire laying machine is referred to, a corresponding conductive wire conveying mechanism is designed to automatically lay the conductive wire on the substrate, and the winding mechanism of the wire laying machine is used to fix the conductive wire to the substrate through the yarn, the efficiency of laying and fixing the conductive wire can be greatly improved; however, in this case, the overall structure of the wire laying machine will become extremely complicated, which will bring many problems to the operation and maintenance of the wire laying machine. Therefore, how to cleverly simplify the various mechanisms of the wire laying machine and still achieve a better laying and winding effect has become a technical problem that needs to be solved. Summary of the invention

[0004] The object of the present invention is to provide a yarn conveying mechanism with a more sophisticated structure to simplify the structure of a yarn laying machine, and to provide a yarn laying machine accordingly.

[0005] In order to achieve the above invention objectives, the present invention adopts the following technical solutions:

[0006] A yarn conveying mechanism is applied to a wire laying machine, the wire laying machine comprises a frame and a driving motor, and the yarn conveying mechanism is installed on the frame;

[0007] The frame is also equipped with a substrate conveying mechanism, a wire conveying mechanism and a winding mechanism which are respectively connected to the driving motor by transmission; the substrate conveying mechanism, the yarn conveying mechanism and the wire conveying mechanism are respectively used to convey the substrate, the yarn and the wire to the winding station of the wire laying machine, and the winding mechanism can control the yarn to wind the wire and fix it on the substrate;

[0008] The yarn conveying mechanism comprises: a yarn fixing row, a yarn left-right moving component and a yarn up-and-down turning component; the yarn fixing row can fix the yarn;

[0009] A driving main shaft is also installed on the frame, and a special-shaped wheel is installed on the driving main shaft; the driving motor is sequentially connected to the driving main shaft and the special-shaped wheel in a transmission manner, and the special-shaped wheel is respectively connected to the yarn up-and-down flipping assembly and the yarn left-and-right moving assembly in a transmission manner;

[0010] The yarn up-and-down flipping assembly is connected to the yarn fixed row in a transmission manner, and can drive the yarn fixed row to flip in the up-and-down direction, and convey the yarn to the winding station;

[0011] The yarn left-and-right moving assembly is connected to the yarn fixed row in a transmission manner, and can drive the yarn fixed row to move in the left-and-right direction, so as to cooperate with the winding mechanism to control the yarn and wind and fix the wire material on the base material.

[0012] Further, the special-shaped wheel is simultaneously an end face cam and a circumferential cam, the special-shaped wheel is in transmission connection with the yarn up-and-down flipping assembly through its peripheral surface, and at the same time, the special-shaped wheel is in transmission connection with the yarn left-and-right moving assembly through its end face.

[0013] Further, the yarn left-and-right moving assembly includes a first rotating rod and a first rotating shaft;

[0014] The end face of the special-shaped wheel is in transmission connection with the first end of the first rotating rod, and the second end of the first rotating rod is in transmission connection with the yarn fixed row;

[0015] The first rotating shaft is arranged in the up-and-down direction and is fixedly connected to the frame, and the first rotating rod can rotate based on the first rotating shaft to drive the yarn fixed row to move in the left-and-right direction.

[0016] Further, the yarn left-and-right moving assembly further includes a first auxiliary wheel, and the first auxiliary wheel is installed on the first end of the first rotating rod; the end face of the special-shaped wheel abuts against the peripheral surface of the first auxiliary wheel to be in transmission connection with the first rotating rod through the first auxiliary wheel.

[0017] Further, the yarn up-and-down flipping assembly includes a second rotating rod and a second rotating shaft;

[0018] The peripheral surface of the special-shaped wheel is in transmission connection with the first end of the second rotating rod, and the second end of the second rotating rod is in transmission connection with the yarn fixed row;

[0019] The second rotating shaft is arranged in the left-and-right direction and is fixedly connected to the frame, and the second rotating rod can rotate based on the second rotating shaft to drive the yarn fixed row to flip in the up-and-down direction.

[0020] Furthermore, the yarn up and down turning assembly also includes a second auxiliary wheel, which is mounted on the first end of the second rotating rod; the circumferential surface of the special-shaped wheel abuts against the circumferential surface of the second auxiliary wheel to be transmission-connected to the second rotating rod through the second auxiliary wheel.

[0021] Further, the yarn fixing row comprises a yarn fixing row body and a yarn fixing row rotating shaft, the yarn fixing row body is fixedly mounted on the yarn fixing row rotating shaft along the axial direction of the yarn fixing row rotating shaft, and the yarn fixing row rotating shaft is rotatably mounted on the frame;

[0022] The yarn up and down turning assembly also includes a first connecting rod, a second connecting rod and an auxiliary spring. The first end of the first connecting rod is fixedly connected to the side of the yarn fixing row rotating shaft, the second end of the first connecting rod is hinged to the first end of the second connecting rod, and the second end of the second connecting rod is hinged to the second end of the second rotating rod; the auxiliary spring is arranged in the up and down direction, and its two ends are respectively connected to the second end of the second rotating rod and the frame, and the second connecting rod and the auxiliary spring are separated on both sides of the yarn fixing row rotating shaft.

[0023] Furthermore, the winding mechanism comprises: a hook needle fixed row and a hook needle forward and backward moving assembly; the hook needle fixed row is provided with a hook needle; and a hook needle driving cam is also installed on the driving main shaft;

[0024] The hook needle driving cam is sequentially connected to the hook needle forward and backward moving assembly and the hook needle fixed row; when the hook needle fixed row moves in the forward and backward direction, the hook needle can pierce the substrate on the winding station;

[0025] The yarn fixing row is provided with a yarn fixing needle, and the yarn fixing needle can fix the yarn; when the yarn fixing row is turned upside down, the yarn can be transported to the docking position of the hook needle, so that the hook needle can hook the yarn;

[0026] When the yarn fixing row moves in the left-right direction, the linkage cooperation between the yarn fixing needle and the hook needle can control the yarn to wind the silk material around and fix it on the base material.

[0027] Furthermore, there is a thread hooking notch below the needle head of the hook needle, and the hook needle hooks the yarn on the yarn fixing needle through the thread hooking notch; the maximum turning angle of the yarn fixing row in the up-down direction is 15° to 30°;

[0028] The wire conveying mechanism is a heating wire conveying mechanism and / or a conductive wire conveying mechanism, which is used to convey the heating wire and / or the conductive wire to the winding station of the wire laying machine.

[0029] In addition, the present invention correspondingly provides a yarn laying machine, which has a yarn conveying mechanism of any of the above-mentioned schemes.

[0030] Beneficial effect: The yarn conveying mechanism of the present invention is connected to the yarn up and down turning assembly and the yarn left and right moving assembly through the special-shaped wheels, so as to realize the turning and left and right movement of the fixed row of yarns. There is no need to use multiple sets of transmission wheels for separate transmission, thereby making the yarn conveying mechanism more sophisticated, reducing the complexity of operation and maintenance of the silk laying machine, and achieving a good laying and winding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 The present invention is a schematic diagram of the overall structure of a yarn laying machine, which can adopt the yarn conveying mechanism provided in the embodiment.

[0033] Figure 2 yes Figure 1 The wire laying machine lacks one of the structural diagrams of the left and right control boxes.

[0034] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of a wire laying machine.

[0035] Figure 4 yes Figure 3 Enlarged structural diagram at A in the middle.

[0036] Figure 5 yes Figure 1 The second structural diagram of the left and right side control boxes of the wire laying machine is missing.

[0037] Figure 6 yes Figure 5 Enlarged structural diagram at B in the middle.

[0038] Figure 7 yes Figure 6 Schematic diagram of the partial structure of the yarn conveying structure of the mid-laying machine.

[0039] Figure 8 yes Figure 7 Schematic diagram of further decomposition structure.

[0040] Figure 9 This is a sample picture of a finished winding product of the wire laying machine in the embodiment.

[0041] In the figure: 30 - heating wire, 40 - base material, 50 - yarn, 60 - conductive wire.

[0042] 1000 - frame, 1100 - driving main shaft, 1200 - special-shaped wheel, 1300 - crochet needle driving cam, driving motor - 2000.

[0043] 3000 - yarn conveying mechanism, 3100 - yarn fixing row, 3110 - yarn fixing row body, 3120 - yarn fixing row rotating shaft, 3130 - yarn fixing needle, 3200 - yarn left-right moving component, 3210 - first rotating rod, 3220 - first rotating shaft, 3230 - first auxiliary wheel, 3300 - yarn up-down flipping component, 3310 - second rotating rod, 3320 - second rotating shaft, 3330 - second auxiliary wheel, 3340 - first connecting rod, 3350 - second connecting rod, 3360 - auxiliary spring.

[0044] 4000 - base material conveying mechanism, 5000 - heating wire conveying mechanism, 6000 - conductive wire conveying mechanism;

[0045] 7000 - winding mechanism, 7100 - crochet needle fixing row, 7110 - crochet needle, 7111 - thread-hooking notch, 7200 - crochet needle front-back moving component. Detailed implementation mode

[0046] In order to make the invention purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 a limitation to the present application.

[0048] Unless otherwise clearly defined and limited, the terms "connection", "fixation", "setting" 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, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features, unless otherwise clearly and specifically defined.

[0050] See also Figures 1 to 4 The present embodiment provides a yarn conveying mechanism 3000 which is applied to a wire laying machine. The wire laying machine includes a frame 1000 and a driving motor 2000. The yarn conveying mechanism 3000 is installed on the frame 1000.

[0051] The frame 1000 is also equipped with a substrate conveying mechanism 4000, a wire conveying mechanism and a winding mechanism 7000 which are respectively connected to the driving motor 2000; in this embodiment, the wire conveying mechanism includes two types: a heating wire conveying mechanism 5000 and a conductive wire conveying mechanism 6000.

[0052] The substrate conveying mechanism 4000, the yarn conveying mechanism 3000, the heating wire conveying mechanism 5000, and the conductive wire conveying mechanism 6000 are respectively used to convey the substrate, yarn, heating wire and conductive wire to the winding station of the wire laying machine. The winding mechanism 7000 can control the yarn to wind the heating wire and the conductive wire and fix them on the substrate respectively.

[0053] The substrate of this embodiment may specifically be non-woven fabric, PVC film, cloth film or mesh film, etc., and the heating wire may specifically be carbon fiber or graphene, etc.

[0054] See also Figures 5 to 8 The yarn conveying mechanism 3000 includes: a yarn fixing row 3100, a yarn left-right moving component 3200 and a yarn up-and-down turning component 3300; the yarn fixing row 3100 can fix the yarn.

[0055] A driving spindle 1100 is also installed on the frame 1000, and a shaped wheel 1200 is installed on the driving spindle 1100; the driving motor 2000 is sequentially connected to the driving spindle 1100 and the shaped wheel 1200, and the shaped wheel 1200 is respectively connected to the yarn up and down turning component 3300 and the yarn left and right moving component 3200.

[0056] The yarn up and down turning assembly 3300 is connected to the yarn fixing row 3100 by transmission, and can drive the yarn fixing row 3100 to turn up and down, and transport the yarn to the winding station.

[0057] The yarn left - right moving component 3200 is in driving connection with the yarn fixing row 3100, and can drive the yarn fixing row 3100 to move in the left - right direction, so as to cooperate with the winding mechanism to control the yarn and wind and fix the heating wire and the conductive wire on the base material respectively.

[0058] For the yarn conveying mechanism 3000 of this embodiment, the special - shaped wheel 1200 is respectively in driving connection with the yarn up - down flipping component 3300 and the yarn left - right moving component 3200, realizing the flipping and left - right movement of the yarn fixing row 3100. Without using multiple sets of driving wheels for separate driving, the yarn conveying mechanism 3000 is more delicate, reducing the complexity of the operation and maintenance of the filament laying machine, and being able to achieve a good laying and winding effect.

[0059] Further, the special - shaped wheel 1200 is both an end - face cam and a circumferential cam. The special - shaped wheel 1200 is in driving connection with the yarn up - down flipping component 3300 through its circumferential surface. At the same time, the special - shaped wheel 1200 is in driving connection with the yarn left - right moving component 3200 through its end - face. The height of the protrusion on the end - face of the special - shaped wheel 1200 will determine the maximum stroke of the yarn fixing row 3100 moving in the left - right direction, and the height of the protrusion or the eccentricity of the circumferential surface of the special - shaped wheel 1200 will determine the maximum angle of the yarn fixing row 3100 flipping in the up - down direction.

[0060] Further, the yarn left - right moving component 3200 includes a first rotating rod 3210 and a first rotating shaft 3220.

[0061] The end - face of the special - shaped wheel 1200 is in driving connection with the first end of the first rotating rod 3210, and the second end of the first rotating rod 3210 is in driving connection with the yarn fixing row 3100.

[0062] The first rotating shaft 3220 is arranged in the up - down direction and fixedly connected to the frame 1000. The first rotating rod 3210 can rotate based on the first rotating shaft 3220 to drive the yarn fixing row 3100 to move in the left - right direction.

[0063] Further, the yarn left - right moving component 3200 further includes a first auxiliary wheel 3230. The first auxiliary wheel 3230 is installed on the first end of the first rotating rod 3210. The end - face of the special - shaped wheel 1200 abuts against the circumferential surface of the first auxiliary wheel 3230 to be in driving connection with the first rotating rod 3210 through the first auxiliary wheel 3230.

[0064] Further, the yarn up - down flipping component 3300 includes a second rotating rod 3310 and a second rotating shaft 3320;

[0065] The circumferential surface of the special - shaped wheel 1200 is in driving connection with the first end of the second rotating rod 3310, and the second end of the second rotating rod 3310 is in driving connection with the yarn fixing row 3100.

[0066] The second rotating shaft 3320 is arranged along the left-right direction and fixedly connected to the frame 1000 . The second rotating rod 3310 can rotate based on the second rotating shaft 3320 to drive the yarn fixing row 3100 to flip along the up-down direction.

[0067] Furthermore, the yarn up and down turning assembly 3300 also includes a second auxiliary wheel 3330, which is installed on the first end of the second rotating rod 3310; the circumferential surface of the special-shaped wheel 1200 abuts against the circumferential surface of the second auxiliary wheel 3330, so as to be transmission-connected with the second rotating rod 3310 through the second auxiliary wheel 3330.

[0068] Furthermore, the yarn fixing row 3100 includes a yarn fixing row body 3110 and a yarn fixing row shaft 3120 , the yarn fixing row body 3110 is fixedly mounted on the yarn fixing row shaft 3120 along the axial direction of the yarn fixing row shaft 3120 , and the yarn fixing row shaft 3120 is rotatably mounted on the frame 1000 .

[0069] The yarn up and down turning assembly 3300 also includes a first connecting rod 3340, a second connecting rod 3350 and an auxiliary spring 3360. The first end of the first connecting rod 3340 is fixedly connected to the side of the yarn fixing row shaft 3120, the second end of the first connecting rod 3340 is hinged to the first end of the second connecting rod 3350, and the second end of the second connecting rod 3350 is hinged to the second end of the second rotating rod 3310; the auxiliary spring 3360 is arranged in the up and down direction, and its two ends are respectively connected to the second end of the second rotating rod 3310 and the frame 1000, and the second connecting rod 3350 and the auxiliary spring 3360 are separated on both sides of the yarn fixing row shaft 3120.

[0070] The auxiliary spring 3360 can make the upside-down turning of the yarn fixing row 3100 more stable and reliable.

[0071] For further information, please refer to Figure 3 The winding mechanism 7000 includes: a hook needle fixed row 7100 and a hook needle forward and backward moving component 7200; a hook needle 7110 is arranged on the hook needle fixed row 7100; and a hook needle driving cam 1300 is also installed on the driving main shaft 1100.

[0072] The hook needle driving cam 1300 is sequentially connected to the hook needle forward and backward moving assembly 7200 and the hook needle fixed row 7100; when the hook needle fixed row 7100 moves along the forward and backward direction, the hook needle 7110 can pierce the substrate on the winding station.

[0073] Please continue reading Figure 4, there are yarn fixing needles 3130 arranged on the yarn fixing row 3100, and the yarn fixing needles 3130 can fix the yarn; when the yarn fixing row 3100 is flipped in the up and down direction, it can convey the yarn to the docking position of the crochet hook 7110, so that the crochet hook 7110 can hook the yarn.

[0074] When the yarn fixing row 3100 moves in the left and right direction, the linkage cooperation between the yarn fixing needles 3130 and the crochet hooks 7110 can control the yarn to wind and fix the heating wire and the conductive wire on the base material respectively.

[0075] Furthermore, there is a wire-hooking notch 7111 under the needle tip of the crochet hook 7110, and the crochet hook 7110 hooks the yarn on the yarn fixing needle 3130 through the wire-hooking notch 7111.

[0076] As a preferred solution, in this embodiment, the maximum flipping angle of the yarn fixing row 3100 in the up and down direction is 15° to 30°.

[0077] In this embodiment, the laying and winding process of the fiber laying machine can be referred to as follows: after the base material conveying mechanism 4000 conveys the base material to the winding station, the driving motor 2000 drives the crochet hook fixing row 7100 to move forward through the driving main shaft 1100, the crochet hook driving cam 1300, and the crochet hook front and back moving assembly 7200 in sequence. The crochet hooks for winding the heating wire and the crochet hooks for winding the conductive wire on the crochet hook fixing row 7100 pierce the base material at the same time; meanwhile, the heating wire conveying mechanism 5000 conveys the heating wire to the heating wire winding station, and the conductive wire conveying mechanism 6000 conveys the conductive wire to the conductive wire winding station; the driving motor 2000 drives the yarn up and down flipping assembly 3300 and the yarn left and right moving assembly 3200 through the driving main shaft 1100 and the special-shaped wheel 1200 in sequence. Among them, under the drive of the yarn up and down flipping assembly 3300, the yarn fixing row 3100 is flipped upward to be roughly level with the horizontal plane, and can be docked with the crochet hook fixing row 7100. Then, under the drive of the yarn left and right moving assembly 3200, the yarn fixing row 3100 moves left and right, so that the yarn on the yarn fixing row 3100 can be hooked by the crochet hook 7110 along the wire-hooking notch 7111. Then the crochet hook fixing row 7100 moves backward, pulling the yarn to the back of the base material, and at the same time the yarn fixing row 3100 is flipped downward to tighten the yarn. In this way, the two groups of yarns wind and fix the heating wire and the conductive wire on the base material respectively, and the laying and winding finished product is referred to Figure 8 as shown.

[0078] As described above, 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 foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A yarn conveying mechanism, applied to a wire laying machine, the wire laying machine comprising a frame and a driving motor, the yarn conveying mechanism being mounted on the frame; The frame is also equipped with a substrate conveying mechanism, a wire conveying mechanism and a winding mechanism which are respectively connected to the driving motor by transmission; the substrate conveying mechanism, the yarn conveying mechanism and the wire conveying mechanism are respectively used to convey the substrate, the yarn and the wire to the winding station of the wire laying machine, and the winding mechanism can control the yarn to wind the wire and fix it on the substrate; it is characterized in that: The yarn conveying mechanism comprises: a yarn fixing row, a yarn left-right moving component and a yarn up-and-down turning component; the yarn fixing row can fix the yarn; The frame is also provided with a driving spindle, on which a shaped wheel is provided; the driving motor is sequentially connected to the driving spindle and the shaped wheel, and the shaped wheel is respectively connected to the yarn up-and-down turning assembly and the yarn left-and-right moving assembly; The yarn up-and-down turning assembly is in driving connection with the yarn fixing row, and can drive the yarn fixing row to turn up-and-down, so as to convey the yarn to the winding station; The yarn left-right moving assembly is in driving connection with the yarn fixing row, and can drive the yarn fixing row to move in the left-right direction, so as to cooperate with the winding mechanism to control the yarn and wind the silk material onto the substrate.

2. The yarn conveying mechanism according to claim 1, wherein, The shaped wheel is both an end face cam and a circumferential cam. The shaped wheel is drivingly connected to the yarn up and down turning assembly through its circumferential surface. At the same time, the shaped wheel is drivingly connected to the yarn left and right moving assembly through its end face.

3. The yarn conveying mechanism according to claim 2, wherein, The yarn left-right moving assembly comprises a first rotating rod and a first rotating shaft; The end surface of the special-shaped wheel is transmission-connected to the first end of the first rotating rod, and the second end of the first rotating rod is transmission-connected to the yarn fixing row; The first rotating shaft is arranged along the up-down direction and fixedly connected to the frame, and the first rotating rod can rotate based on the first rotating shaft to drive the yarn fixing row to move along the left-right direction.

4. The yarn conveying mechanism according to claim 3, wherein The yarn left-right moving assembly also includes a first auxiliary wheel, which is mounted on the first end of the first rotating rod; the end surface of the special-shaped wheel abuts against the circumference of the first auxiliary wheel to be transmission-connected with the first rotating rod through the first auxiliary wheel.

5. The yarn conveying mechanism according to claim 2, characterized in that, The yarn up and down turning assembly comprises a second rotating rod and a second rotating shaft; The circumferential surface of the special-shaped wheel is drivingly connected to the first end of the second rotating rod, and the second end of the second rotating rod is drivingly connected to the yarn fixing row; The second rotating shaft is arranged along the left-right direction and is fixedly connected to the frame, and the second rotating rod can rotate based on the second rotating shaft to drive the yarn fixing row to flip along the up-down direction.

6. The yarn conveying mechanism according to claim 5, characterized in that, The yarn up and down turning assembly also includes a second auxiliary wheel, which is mounted on the first end of the second rotating rod; the circumference of the special-shaped wheel abuts against the circumference of the second auxiliary wheel to be transmission-connected to the second rotating rod through the second auxiliary wheel.

7. The yarn conveying mechanism according to claim 6, wherein, The yarn fixing row comprises a yarn fixing row body and a yarn fixing row rotating shaft, wherein the yarn fixing row body is fixedly mounted on the yarn fixing row rotating shaft along the axial direction of the yarn fixing row rotating shaft, and the yarn fixing row rotating shaft is rotatably mounted on the frame; The yarn up and down turning assembly also includes a first connecting rod, a second connecting rod and an auxiliary spring. The first end of the first connecting rod is fixedly connected to the side of the yarn fixing row rotating shaft, the second end of the first connecting rod is hinged to the first end of the second connecting rod, and the second end of the second connecting rod is hinged to the second end of the second rotating rod; the auxiliary spring is arranged in the up and down direction, and its two ends are respectively connected to the second end of the second rotating rod and the frame, and the second connecting rod and the auxiliary spring are separated on both sides of the yarn fixing row rotating shaft.

8. The yarn conveying mechanism according to any one of claims 1-7, characterized in that, The winding mechanism comprises: a hook needle fixed row and a hook needle forward and backward moving assembly; the hook needle fixed row is provided with hook needles; and the driving main shaft is also provided with a hook needle driving cam; The hook needle driving cam is sequentially connected to the hook needle forward and backward moving assembly and the hook needle fixed row; when the hook needle fixed row moves in the forward and backward direction, the hook needle can pierce the substrate on the winding station; The yarn fixing row is provided with a yarn fixing needle, and the yarn fixing needle can fix the yarn; when the yarn fixing row is turned upside down, the yarn can be transported to the docking position of the hook needle, so that the hook needle can hook the yarn; When the yarn fixing row moves in the left-right direction, the linkage cooperation between the yarn fixing needle and the hook needle can control the yarn to wind the silk material around and fix it on the base material.

9. The yarn conveying mechanism according to claim 8, characterized in that, There is a thread hooking notch below the needle head of the hook needle, and the hook needle hooks the yarn on the yarn fixing needle through the thread hooking notch; the maximum turning angle of the yarn fixing row in the up-down direction is 15° to 30°; The wire conveying mechanism is a heating wire conveying mechanism and / or a conductive wire conveying mechanism, which is used to convey the heating wire and / or the conductive wire to the winding station of the wire laying machine.

10. A fiber placement machine, characterized in that, A yarn conveying mechanism according to any one of claims 1 to 9.

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