Tow steering device and automatic fiber placement machine

Abstract

The present application relates to the technical field of automatic composite material placement, and in particular to a tow steering device and an automatic tow laying machine. The tow steering device includes a mounting frame and at least one balance wheel assembly rotatably mounted on the mounting frame; the balance wheel assembly includes a tow steering frame rotatably connected to the mounting frame and at least one roller rotatably mounted on the tow steering frame; the opposite ends of the roller's rotating shaft are respectively rotatably connected to two opposing and spaced retaining walls of the tow steering frame, and there is a gap between the two opposing wheel surfaces of the roller, so that the two wheel surfaces and the shaft sleeve of the rotating shaft form an annular groove circumferentially surrounding the rotating shaft. The tow is introduced from one end side of the annular groove, bypasses the annular groove, and is then led out from the other end side. This solves the problems of tow being easily offset, flipped, knotted, and worn, improves the stability and accuracy of tow transmission, and reduces maintenance costs.

Description

Technical Field

[0001] The present application relates to the technical field of automatic placement of composite materials, and in particular to a tow steering device and an automatic tow placing machine. Background Art

[0002] Automated fiber placement technology, a new type of automated composite material forming technology developed based on winding and automated tape placement techniques, is widely used in the automated manufacturing of large composite parts such as wings, rudders, horizontal tails, and fuselage barrels. An automated fiber placement machine primarily utilizes its machine body or robotics to achieve three-axis orthogonal motion of the fiber placement head. The head is the machine's most critical functional component and typically includes a fiber bundle traction and distribution device, as well as feeding, clamping, shearing, heating, and compacting mechanisms to achieve its various placement functions.

[0003] Existing automatic composite material placement machines typically include 8-tow, 16-tow, or 32-tow placement machines. Each tow is released by a separate tow reel take-up and unwinding assembly, and the tows do not affect each other. Before being placed by the placement machine, the tows will pass through modules such as tow steering, clamping, tow re-feeding, and shearing. Finally, multiple tows are gathered at the placement head and laid according to a predetermined path and angle. To achieve this, a tow steering mechanism is required to change the direction of the tow. The core task of the placement machine is to ensure that the fiber tows always maintain the accurate position and direction during high-speed transmission to achieve the manufacture of high-quality composite components.

[0004] However, due to the flexibility of fiber bundles and their susceptibility to external interference, in actual operation, the bundles are prone to deviation, flipping, or knotting, leading to equipment failure and production interruption, seriously affecting the laying effect and production efficiency. For example, in the prior art, the transmission direction of the bundle is guided by grooves set on the guide wheel. The guide wheel is fixed to the frame of the fiber laying machine, and the bundle is guided by the grooves of the guide wheel for transmission. When using this guide device during high-speed transmission, on the one hand, the bundle is prone to slipping due to insufficient friction, which can easily cause the bundle to deviate from the predetermined transmission path, affecting the transmission stability and transmission accuracy, and affecting production efficiency and product quality; on the other hand, there is a large friction between the grooves of the guide wheel and the bundle, which can easily cause the bundle to wear and the device to wear, increasing maintenance costs. Summary of the Invention

[0005] The purpose of this application is to provide a yarn tow steering device and an automatic yarn laying machine to solve the problems of yarn tow easily being offset, flipped, knotted and worn, to improve the stability and accuracy of yarn tow transmission and to reduce maintenance costs.

[0006] In a first aspect, the present application provides a tow steering device, comprising:

[0007] Install the rack; and

[0008] rotating at least one balance wheel assembly mounted on the mounting frame;

[0009] The balance wheel assembly includes a tow turning frame rotatably connected to the mounting frame, and at least one roller rotatably mounted on the tow turning frame;

[0010] The opposite ends of the roller's rotating shaft are respectively rotatably connected to two opposite and spaced-apart retaining walls of the tow turning frame. There is a distance between the two opposite wheel surfaces of the roller, so that an annular groove surrounding the circumference of the tow is formed between the two wheel surfaces and the shaft sleeve of the tow shaft. The tow is introduced from one end side of the annular groove, bypasses the annular groove, and is led out from the other end side.

[0011] Furthermore, the tow steering frame also includes a top connecting wall, the opposite end sides of the top connecting wall are connected to the top of the two retaining walls, the top connecting wall is rotatably connected to the mounting frame, and the top connecting wall is higher than the roller, so that there is an avoidance space between the top connecting wall and the top of the wheel surface of the roller.

[0012] Furthermore, the balance wheel assembly is rotatably connected to two rollers spaced apart and arranged side by side along the transverse extension direction of the retaining wall, namely a first roller on the inner side and a second roller on the outer side;

[0013] The first roller is formed with a first annular groove, and the second roller is formed with a second annular groove. The first annular groove and the second annular groove together form a tow steering channel. The lower side or the upper side of the second annular groove is a tow inlet of the tow steering channel, and the lower side or the upper side of the first annular groove is a tow outlet of the tow steering channel.

[0014] The filament bundle is introduced from the filament bundle inlet on the lower side or upper side of the second annular groove, goes around upward or downward to the upper side or lower side of the first annular groove, and after bypassing the first annular groove, is led out from the filament bundle outlet on the lower side or upper side of the first annular groove.

[0015] Furthermore, the mounting frame includes a mounting plate and at least one balance wheel mounting bracket fixedly connected to the mounting plate, and the top connecting wall of the tow turning frame is rotatably connected to the balance wheel mounting bracket;

[0016] The balance wheel mounting bracket is extended along a first direction, one end of which along the first direction is a fixed end fixedly connected to the mounting plate, and the other end is an extended end, and the extended end is rotatably connected to at least one balance wheel assembly.

[0017] Furthermore, the balance wheel mounting bracket includes a first balance wheel mounting bracket, and the extending end of the first balance wheel mounting bracket is sequentially provided with two rotation connection holes along a second direction perpendicular to the first direction, each of which is used to rotatably connect to one of the balance wheel assemblies, and the two balance wheel assemblies are arranged oppositely and symmetrically, and the wire bundle outlet sides of the two balance wheel assemblies are arranged oppositely and spaced apart, and the spaced position forms a first wire bundle outlet channel, and the wire bundle inlet sides of the two balance wheel assemblies are arranged outward; and / or

[0018] The balance wheel mounting bracket includes at least two second balance wheel mounting brackets, and the extending end of the second balance wheel mounting bracket is provided with a rotating connection hole for rotating connection to one of the balance wheel components, wherein the two second balance wheel mounting brackets are arranged opposite to each other and at intervals, so that the wire bundle lead-out sides of the two balance wheel components are arranged opposite to each other and at intervals, and the interval position forms a second wire bundle lead-out channel, and the wire bundle lead-in sides of the two balance wheel components are arranged outward.

[0019] Furthermore, the balance wheel mounting bracket includes a first balance wheel mounting bracket located in the upper middle position and two second balance wheel mounting brackets located on opposite sides below the first balance wheel mounting bracket and spaced apart from each other;

[0020] The first wire bundle lead-out channel formed by the two balance wheel assemblies of the first balance wheel mounting bracket and the second wire bundle lead-out channels formed by the two balance wheel assemblies of the two second balance wheel mounting brackets are converged and overlapped to form a common wire bundle lead-out channel.

[0021] Furthermore, the rotation connection holes of the two second balance wheel mounting brackets are fixedly connected to limit pins on opposite sides along the first direction, and the two limit pins are spaced apart from the rotation connection holes, and the upper and lower ends of the limit pins pass through the second balance wheel mounting bracket and extend upward and downward respectively, so as to limit the balance wheel assembly above the second balance wheel mounting bracket and the balance wheel assembly below the second balance wheel mounting bracket respectively.

[0022] Furthermore, one side of the top connecting wall is arranged close to the tow outlet side of the balance wheel assembly;

[0023] The transverse width of the top connecting wall is smaller than the transverse extension width of the blocking wall.

[0024] Furthermore, the top connecting wall of the tow steering frame is rotatably connected to the balance wheel mounting bracket through a steering rotation connection assembly, and the steering rotation connection assembly includes a steering bearing rotatably connected to the top connecting wall, a bearing spacer with a clearance fit with the steering bearing, and a bearing gasket located between the top of the steering bearing and the balance wheel mounting bracket, and the steering bearing and the bearing spacer form a rotating pair; and / or

[0025] The mounting frame also includes a fixing frame, one end of which is fixedly connected to the side of the mounting plate away from the balance wheel mounting bracket, and the other end is used to be fixed on the yarn box frame of the automatic yarn laying machine.

[0026] In a second aspect, the present application provides an automatic wire laying machine, which is based on the wire bundle steering device described in any one of the above, and includes a wire laying machine frame and two groups of the wire bundle steering devices arranged on opposite sides of the wire laying machine frame.

[0027] Compared with the prior art, the present application provides a tow steering device and an automatic fiber laying machine, wherein the tow steering device includes a mounting frame and at least one balance wheel assembly rotatably mounted on the mounting frame, the balance wheel assembly including a tow steering frame rotatably connected to the mounting frame, and at least one roller rotatably mounted between two relatively spaced baffle walls of the tow steering frame, a rotating shaft is provided at the center of the roller, a wheel surface of the roller rotates around the central rotating shaft, opposite ends of the roller's rotating shaft are respectively rotatably connected to the two baffle walls, and a spacing is provided between the two opposite wheel surfaces of the roller, so that an annular groove surrounding the circumference of the rotating shaft is formed between the two wheel surfaces and the shaft sleeve of the rotating shaft, the annular groove forming a tow steering channel, the tow can be introduced from one end side (tow inlet side) of the annular groove, deflected around the annular groove, and discharged from the other end side (tow outlet side) thereof, specifically, the tow can be discharged from the tow material reel taking-up and unwinding assembly, and the tow inlet side of the annular groove of the balance wheel assembly can be arranged close to the tow material reel taking-up and unwinding assembly.

[0028] First, a balance wheel assembly rotatably connected to the mounting frame is adopted, so that the balance wheel assembly can rotate flexibly and has multiple rotation angles. This allows the tow introduction side of the annular groove position of the balance wheel assembly to flexibly adapt to the tow payout at different angles from the tow material reel take-up assembly, and flexibly adapt to the tow feed angle, rather than the tow material reel take-up assembly having to find a fixed wire introduction slot. This effectively avoids the problems of tow flipping, deviation, and tangling, improves the stability and accuracy of tow transmission, reduces maintenance costs, and enhances adaptability.

[0029] Second, after the tow is introduced into the annular groove of the flexibly swinging balance wheel assembly, the tow is limited by the two relative wheel surfaces of the annular groove, which effectively limits the transportation path of the tow, so that the tow can always remain in the predetermined position during the transportation process. At the same time, due to the flexible swing of the balance wheel assembly, it will not give the tow excessive resistance while limiting the position. While playing a limiting role, it will not damage the tow, further avoiding the problems of tow deviation, friction damage, flipping, and falling off, effectively improving the transportation accuracy of the tow, ensuring the stability of the tow during high-speed transportation, reducing wear, enhancing adaptability, reducing maintenance costs, and thereby improving the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a schematic structural diagram of the tow steering device provided in an embodiment of the present application in use;

[0032] Figure 2 A schematic structural diagram of a tow steering device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of the mounting rack provided in an embodiment of the present application;

[0034] Figure 4 A schematic structural diagram of a balance wheel assembly provided in an embodiment of the present application;

[0035] Figure 5 A schematic cross-sectional view of a balance wheel assembly provided in an embodiment of the present application;

[0036] Figure 6 This is a schematic structural diagram of the automatic wire laying machine provided in an embodiment of the present application.

[0037] Reference numerals:

[0038] 100-tow steering device;

[0039] 10-Install the rack;

[0040] 11-fixed frame;

[0041] 12-Mounting plate;

[0042] 121-second mounting hole;

[0043] 13-First balance wheel mounting bracket;

[0044] 14-Second balance wheel mounting bracket;

[0045] 141-limit pin;

[0046] 151-fixed end;

[0047] 152- extension end;

[0048] 16- Rotate the connection hole;

[0049] 17-steering rotation connection assembly;

[0050] 171-steering bearing;

[0051] 172-bearing spacer;

[0052] 20-balance wheel assembly;

[0053] 211-first balance wheel assembly;

[0054] 212-second balance wheel assembly;

[0055] 22-tow steering frame;

[0056] 221-first retaining wall;

[0057] 222- second retaining wall;

[0058] 223-top connecting wall;

[0059] 2231-first mounting hole;

[0060] 224-avoidance space;

[0061] 23-first roller;

[0062] 231-first annular groove;

[0063] 24-second roller;

[0064] 241- second annular groove;

[0065] 251-wheel surface;

[0066] 252-rotating shaft;

[0067] 253-sleeve;

[0068] 254-roller bearing;

[0069] 255-roller bearing spacer;

[0070] 261-tow introduction port;

[0071] 262-tow outlet;

[0072] 200-Automatic Wire Placing Machine;

[0073] 201-wire placing machine frame;

[0074] 202-tow;

[0075] 203-Pre-re-delivery mechanism. DETAILED DESCRIPTION

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0077] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0079] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0080] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0081] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0082] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0083] like Figures 1 to 6 As shown, an embodiment of the present application provides a tow steering device 100 and an automatic fiber laying machine 200 using the tow steering device 100 .

[0084] The tow steering device 100 provided in the embodiment of the present application may include a mounting frame 10 and at least one balance wheel assembly 20. The balance wheel assembly 20 is rotatably mounted on the mounting frame 10, and the mounting frame 10 may be fixed on the tow laying machine frame 201 of the automatic tow laying machine 200; the balance wheel assembly 20 may include a tow steering frame 22 and at least one roller rotatably mounted on the tow steering frame 22, the tow steering frame 22 includes two opposing and spaced-apart retaining walls, namely a first retaining wall 221 and a second retaining wall 222, the center of the roller may be provided with a rotating shaft 252, the wheel surface 251 of the roller rotates around the central rotating shaft 252, the roller is rotatably connected between the first retaining wall 221 and the second retaining wall 222 through its rotating shaft 252, and the opposite ends of the rotating shaft 252 are rotatably connected to the first retaining wall 221 and the second retaining wall 222 respectively. 222; and there is a spacing between the two relative wheel surfaces 251 of the roller, so that the two wheel surfaces 251 and the shaft sleeve 253 of the rotating shaft 252 form an annular groove along the circumference of the rotating shaft 252, and the annular groove forms a yarn steering channel, so that the yarn bundle 202 is introduced from one end side of the annular groove (the yarn bundle introduction side) to bypass the annular groove and be exported from the other end side (the yarn bundle outlet side). Specifically, the yarn bundle 202 can be released from the yarn bundle material reel winding and unwinding assembly of the automatic yarn laying machine 200, and the yarn bundle introduction side of the annular groove of the balance wheel assembly 20 can be arranged close to the yarn bundle material reel winding and unwinding assembly, and the yarn bundle outlet 262 of the yarn bundle steering device 100 corresponds to the pre-weighted delivery mechanism 203 of the next level leading to the automatic yarn laying machine 200.

[0085] Compared with the prior art, the tow steering device 100 and the automatic wire laying machine 200 provided in the embodiments of the present application. First, a balance wheel assembly 20 is rotatably connected to the mounting frame 10, so that the balance wheel assembly 20 can rotate flexibly and has multiple rotation angles. This allows the tow introduction side of the annular groove position of the balance wheel assembly 20 to flexibly adapt to the release of the tow 202 from the tow material reel reel assembly at different angles and flexibly adapt to different feeding angles of the tow 202, rather than the tow material reel reel assembly having to find a fixed wire introduction slot. This effectively avoids the problems of the tow 202 flipping, offsetting, and knotting, improves the transmission stability and transmission accuracy of the tow 202, reduces maintenance costs, and enhances adaptability.

[0086] Second, after the filament bundle 202 is introduced into the annular groove of the flexibly swinging balance wheel assembly 20, the filament bundle 202 is limited by the two relative wheel surfaces 251 of the annular groove, which effectively limits the transportation path of the filament bundle 202, so that the filament bundle 202 can always remain in the predetermined position during the transportation process. At the same time, due to the flexible swing of the balance wheel assembly 20, it will not give excessive resistance to the filament bundle 202 while limiting the position. While playing a limiting role, it will not damage the filament bundle 202, further avoiding the problems of filament bundle 202 offset, friction damage, flipping, and falling off, effectively improving the transportation accuracy of the filament bundle 202, ensuring the stability of the filament bundle 202 during high-speed transportation, reducing wear, enhancing adaptability, reducing maintenance costs, and thereby improving the quality of the final product.

[0087] A preferred embodiment is as follows Figure 4 As shown, the aforementioned tow turning frame 22 may further include a top connecting wall 223, the opposite ends of which are connected to the tops of the two retaining walls (the first retaining wall 221 and the second retaining wall 222). The top connecting wall 223 is rotatably connected to the mounting frame 10 and is further provided with a first mounting hole 2231 for rotatably connecting to the mounting frame 10. The balance assembly 20 is connected to the mounting frame 10 via the top connecting wall 223, allowing the entire assembly below the top of the balance assembly 20 to flexibly swing within a wide range, thereby maximally meeting the flexible swinging requirements of the balance assembly 20 at different angles, thereby further improving the adaptability and stability of the balance assembly 20.

[0088] On the basis of the aforementioned embodiment, it is further preferred that the top connecting wall 223 is set higher than the roller, so that there is an avoidance space 224 between the top connecting wall 223 and the top of the wheel surface 251 of the roller. In this way, not only will the top connecting wall 223 not affect the rotation of the roller, but the top connecting wall 223 located at the top can also play the role of a top limiter, further limiting the yarn bundle to remain in the predetermined path in the yarn bundle turning channel formed by the annular groove, further effectively preventing the yarn bundle from deflecting, and improving the transmission stability and transmission accuracy of the yarn bundle 202.

[0089] Based on the aforementioned embodiment, it is more preferred that one side of the top connecting wall 223 be positioned near the tow outlet side of the balance wheel assembly 20 to further ensure that the balance wheel assembly 20 can swing flexibly within the widest possible range. Furthermore, the lateral width (i.e., along the transverse direction c) of the top connecting wall 223 is preferably less than the lateral extension (i.e., along the transverse direction c) of the retaining walls (i.e., the first retaining wall 221 and the second retaining wall 222), thereby further avoiding the roller's operation and not affecting the roller's function of steering and transmitting the tow 202.

[0090] like Figure 4 As shown, in a specific embodiment, the balance wheel assembly 20 is rotatably connected in sequence along the lateral extension direction (i.e., the extension direction along the lateral direction c) of the retaining wall (i.e., the first retaining wall 221 and the second retaining wall 222) to provide two rollers spaced side by side, namely, a first roller 23 on the inner side and a second roller 24 on the outer side. Of course, depending on actual conditions, more rollers may be spaced side by side along the extension direction of the lateral direction c. The embodiment of the present application is illustrated by taking one balance wheel assembly 20 provided with two other rollers as an example.

[0091] Correspondingly, the first roller 23 is formed with a first annular groove 231, and the second roller 24 is formed with a second annular groove 241. The first annular groove 231 and the second annular groove 241 together form a yarn bundle turning channel. At the same time, the first baffle wall 221 and the second baffle wall 222 can assist in playing the role of lateral limiting blocking, further ensuring that the yarn bundle 202 remains in the predetermined path for turning and conveying. The two rollers and the two annular grooves can further enhance the stability of the turning and conveying of the yarn bundle 202, and the transmission path is more stable and reliable.

[0092] like Figure 1 As shown, specifically, the lower side or upper side of the second annular groove 241 can be the tow inlet 261 of the tow steering channel, and the lower side or upper side of the first annular groove 231 can be the tow outlet 262 of the tow steering channel, which can be selected according to actual conditions.

[0093] The filament bundle 202 can be introduced from the filament bundle introduction port 261 on the lower or upper side of the second annular groove 241, and then go around to the upper or lower side of the first annular groove 231. After going around the first annular groove 231, the filament bundle can be led out from the filament bundle outlet 262 on the lower or upper side of the first annular groove 231. For example, Figure 1 The specific embodiment provided by the present application shown is that the filament bundle 202 is introduced from the filament bundle inlet 261 on the lower side of the second annular groove 241, goes around to the upper side of the first annular groove 231, and after bypassing the first annular groove 231, is led out from the filament bundle outlet 262 on the lower side of the first annular groove 231. The filament bundle 202 can be turned from horizontal to longitudinal.

[0094] Regarding the installation of the rack 10, Figures 1 to 3 As shown, the mounting frame 10 provided in the embodiment of the present application may include a fixing frame 11, a mounting plate 12 and at least one balance wheel mounting bracket fixedly connected to the mounting plate 12, the mounting plate 12 is provided with a plurality of second mounting holes 121, and the balance wheel mounting bracket can be fixedly mounted on the mounting plate 12 through the second mounting holes 121, and the balance wheel mounting bracket is used to rotatably connect the balance wheel assembly 20, specifically, it is rotatably connected to the top connecting wall 223 of the bundle turning frame 22 of the balance wheel assembly 20, more specifically, the balance wheel mounting bracket is extended along the first direction a, and one end thereof along the first direction a is a fixed end 151 fixedly connected to the mounting plate 12, and the other end is an extension end 152, and the extension end 152 is rotatably connected to at least one balance wheel assembly 20; one end of the fixing frame 11 is fixedly connected to the side of the mounting plate 12 away from the side connected to the balance wheel mounting bracket, and the other end is used to be fixed on the silk laying head yarn box frame of the automatic silk laying machine 200.

[0095] In an optional embodiment, the balance wheel mounting bracket may include a first balance wheel mounting bracket 13. The extended end 152 of the first balance wheel mounting bracket 13 is provided with two rotational connection holes 16 spaced apart along a second direction b perpendicular to the first direction a. Each hole is used for rotationally connecting to a balance wheel assembly 20 (specifically, a first balance wheel assembly 211). The two first balance wheel assemblies 211 are arranged opposite each other and bilaterally symmetrically. The fiber bundle outlet sides of the two first balance wheel assemblies 211 are opposite each other and spaced apart, forming a first fiber bundle outlet channel. The fiber bundle inlet sides of the two first balance wheel assemblies 211 are facing outward. Using a single balance wheel mounting bracket, two balance wheel assemblies 20 can be installed and used efficiently and reliably.

[0096] Another optional embodiment is that the balance wheel mounting bracket may include a second balance wheel mounting bracket 14, and the extended end 152 of the second balance wheel mounting bracket 14 is provided with a rotating connection hole 16 for rotatingly connecting a balance wheel assembly 20 (specifically, a second balance wheel assembly 212), that is, a second balance wheel mounting bracket 14 can be rotatably connected to a second balance wheel assembly 212, and preferably may include two second balance wheel mounting brackets 14, the two second balance wheel mounting brackets 14 are arranged relative to each other and at intervals, so that the wire bundle lead-out sides of the two second balance wheel assemblies 212 are arranged relative to each other and at intervals, and the interval position forms a second wire bundle lead-out channel, and the wire bundle lead-in sides of the two second balance wheel assemblies 212 are arranged outward, so that the installation and use of two balance wheel assemblies 20 can be realized at the same time, thereby improving work efficiency.

[0097] In a more preferred embodiment, the balance wheel mounting bracket may include a first balance wheel mounting bracket 13 located in the upper center position and two second balance wheel mounting brackets 14 located below the first balance wheel mounting bracket 13 on opposite sides and spaced apart from each other. The first tow lead-out channel formed by the two first balance wheel assemblies 211 of the first balance wheel mounting bracket 13 and the second tow lead-out channels formed by the two second balance wheel assemblies 212 of the two second balance wheel mounting brackets 14 are combined and overlapped to form a common tow lead-out channel. The first balance wheel mounting bracket 13 and the second balance wheel mounting bracket 14 can be used in conjunction with each other, with a reasonably arranged placement and a compact structure. Four balance wheel assemblies 20 can be used simultaneously to further improve work efficiency.

[0098] like Figures 1 to 3 As shown, a more preferred embodiment is that the rotation connection hole positions 16 of the two second balance wheel mounting brackets 14 can be fixedly connected to the limiting pins 141 on opposite sides along the first direction a, and the limiting pins 141 are preferably vertically arranged, and the two limiting pins 141 are spaced apart from the rotation connection hole positions 16, and the upper end and the lower end of the limiting pin 141 are respectively extended upward and downward through the second balance wheel mounting bracket 14 to limit the first balance wheel assembly 211 above the second balance wheel mounting bracket 14 and the second balance wheel assembly 212 located below the second balance wheel mounting bracket 14, respectively.

[0099] By setting the limit pin 141, the swing amplitude of the balance wheel assembly 20 (the first balance wheel assembly 211 and the second balance wheel assembly 212) can be effectively limited, effectively preventing the swing amplitude of the balance wheel assembly 20 from being too large, causing the tow 202 to flip over and knot, ensuring the stability and transmission accuracy of the tow 202, reducing equipment failures and production interruptions, and improving the continuity and stability of the production line.

[0100] A specific embodiment is as follows Figure 2 and Figure 3 As shown, the top connecting wall 223 of the tow steering frame 22 of the balance wheel assembly 20 is rotatably connected to the balance wheel mounting bracket via a steering rotation connection assembly 17. The steering rotation connection assembly 17 may specifically include a steering bearing 171 rotatably connected to the top connecting wall 223, a bearing spacer having a clearance fit with the steering bearing 171, and a bearing washer 172 located between the top of the steering bearing 171 and the balance wheel mounting bracket. The steering bearing 171 and the bearing spacer form a rotating pair.

[0101] An optional embodiment is as follows Figure 4 and Figure 5 As shown, the first roller 23 is a large-diameter roller, and the second roller 24 is a small-diameter roller. The bottom surface circumferential diameter of the first annular groove 231 of the first roller 23 is larger than the bottom surface circumferential diameter of the second annular groove 241 of the second roller 24, thereby improving transmission accuracy.

[0102] like Figure 5 As shown, a specific embodiment is that the opposite ends of the roller shaft 252 can be rotatably connected to the first retaining wall 221 and the second retaining wall 222 through a bearing assembly, and the bearing assembly can specifically include a roller bearing 254 and a roller bearing spacer 255.

[0103] Another preferred embodiment is as follows Figure 6 As shown, at least two sets of the tow steering devices 100 provided in the embodiment of the present application may be included. The two sets of tow steering devices 100 may be respectively arranged on two opposite sides of the automatic laying machine frame 201 of the laying machine 200, that is, Figure 6 What can be shown is one side of the wire laying machine frame 201, on which a group of wire bundle steering devices 100 can be set, and another group of wire bundle steering devices 100 can be set on the other side opposite thereto, thereby greatly improving the working efficiency, and the structure is compact and efficient.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A tow steering device, characterized in that: include: Install the rack; and rotating at least one balance wheel assembly mounted on the mounting frame; The balance wheel assembly includes a tow turning frame rotatably connected to the mounting frame, and at least one roller rotatably mounted on the tow turning frame; The opposite ends of the rotating shaft of the roller are respectively rotatably connected to two opposing and spaced-apart retaining walls of the tow turning frame, and a distance is provided between the two opposite wheel surfaces of the roller so that an annular groove surrounding the circumference of the rotating shaft is formed between the two wheel surfaces and the shaft sleeve of the rotating shaft, and the tow is introduced from one end side of the annular groove, bypasses the annular groove, and is discharged from the other end side thereof; The mounting frame includes a mounting plate and at least one balance wheel mounting bracket fixedly connected to the mounting plate, the tow turning frame is rotatably connected to the balance wheel mounting bracket, and the balance wheel mounting bracket is extended along the first direction; The balance wheel mounting bracket includes a first balance wheel mounting bracket located in the upper middle position and two second balance wheel mounting brackets located on opposite sides below the first balance wheel mounting bracket and spaced apart from each other; The extending end of the first balance wheel mounting bracket is provided with two rotation connection holes spaced apart in sequence along a second direction perpendicular to the first direction, each for rotationally connecting to one of the balance wheel assemblies; the balance wheel mounting bracket includes at least two second balance wheel mounting brackets, each extending end of the second balance wheel mounting bracket being provided with a rotation connection hole for rotationally connecting to one of the balance wheel assemblies; The two second balance wheel mounting brackets are fixedly connected to limit pins on opposite sides of the rotation connection holes for rotatably connecting the balance wheel assembly along the first direction, and the two limit pins are spaced apart from the rotation connection holes, and the upper and lower ends of the limit pins pass through the second balance wheel mounting bracket and extend upward and downward respectively, so as to limit the balance wheel assembly above the second balance wheel mounting bracket and the balance wheel assembly below the second balance wheel mounting bracket respectively.

2. The tow steering device according to claim 1, characterized in that The tow turning frame also includes a top connecting wall, the opposite end sides of the top connecting wall are connected to the top of the two retaining walls, the top connecting wall is rotatably connected to the mounting frame, and the top connecting wall is higher than the roller, so that there is an avoidance space between the top connecting wall and the top of the wheel surface of the roller.

3. The tow steering device according to claim 2, characterized in that The balance wheel assembly is rotatably connected to two rollers arranged side by side in a lateral extension direction of the retaining wall, namely a first roller on the inner side and a second roller on the outer side; The first roller is formed with a first annular groove, and the second roller is formed with a second annular groove. The first annular groove and the second annular groove together form a tow steering channel. The lower side or the upper side of the second annular groove is a tow inlet of the tow steering channel, and the lower side or the upper side of the first annular groove is a tow outlet of the tow steering channel. The filament bundle is introduced from the filament bundle inlet on the lower side or upper side of the second annular groove, goes around upward or downward to the upper side or lower side of the first annular groove, and after bypassing the first annular groove, is led out from the filament bundle outlet on the lower side or upper side of the first annular groove.

4. The tow steering device according to claim 2 or 3, characterized in that The top connecting wall of the tow turning frame is rotatably connected to the balance wheel mounting bracket; One end of the balance wheel mounting bracket along the first direction is a fixed end fixedly connected to the mounting plate, and the other end is an extending end, and the extending end is rotatably connected to at least one balance wheel assembly.

5. The tow steering device according to claim 4, characterized in that The two balance wheel assemblies of the first balance wheel mounting bracket are arranged opposite to each other and symmetrically, the tow lead-out sides of the two balance wheel assemblies are arranged opposite to each other and spaced apart, the spaced apart positions form a first tow lead-out channel, and the tow lead-in sides of the two balance wheel assemblies are arranged outward; The balance wheel mounting bracket includes at least two second balance wheel mounting brackets, wherein the two second balance wheel mounting brackets are arranged opposite to each other and spaced apart, so that the wire bundle lead-out sides of the two balance wheel assemblies are arranged opposite to each other and spaced apart, the spaced position forms a second wire bundle lead-out channel, and the wire bundle lead-in sides of the two balance wheel assemblies are arranged outward.

6. The tow steering device according to claim 5, characterized in that The first wire bundle lead-out channel formed by the two balance wheel assemblies of the first balance wheel mounting bracket and the second wire bundle lead-out channels formed by the two balance wheel assemblies of the two second balance wheel mounting brackets are converged and overlapped to form a common wire bundle lead-out channel.

7. The tow steering device according to claim 5 or 6, characterized in that: One side of the top connecting wall is arranged close to the tow outlet side of the balance wheel assembly; The transverse width of the top connecting wall is smaller than the transverse extension width of the blocking wall.

8. The tow steering device according to claim 4, characterized in that The top connecting wall of the tow steering frame is rotatably connected to the balance wheel mounting bracket via a steering rotation connection assembly, wherein the steering rotation connection assembly includes a steering bearing rotatably connected to the top connecting wall, a bearing spacer with a clearance fit with the steering bearing, and a bearing gasket located between the top of the steering bearing and the balance wheel mounting bracket, wherein the steering bearing and the bearing spacer form a rotating pair; The mounting frame also includes a fixing frame, one end of which is fixedly connected to the side of the mounting plate away from the balance wheel mounting bracket, and the other end is used to be fixed on the yarn box frame of the automatic yarn laying machine.

9. An automatic wire laying machine, characterized in that: The filament bundle steering device according to any one of claims 1 to 8 comprises a filament laying machine frame and two groups of the filament bundle steering devices arranged on opposite sides of the filament laying machine frame.

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