A quick replacement structure for large functional components and a fiber placement machine

Abstract

The present invention provides a quick replacement structure for large functional components and a filament winding machine, belonging to the technical field of filament winding machines. The quick replacement structure for large functional components includes a fixed unit and a moving unit. The fixed unit includes a base, and a positioning shaft and a tensioning and locking assembly are arranged at the edge of the lower end of the base. The moving unit includes a connecting body, and an outer positioning sleeve and a pull stud are arranged at the edge of the upper end of the connecting body. The outer positioning sleeve can be inserted into the corresponding positioning shaft, and the pull stud can be clamped by the corresponding tensioning and locking assembly. A upper combined plate is floatingly installed in the middle of the lower end of the base, and a female socket and an inner positioning sleeve are arranged at the upper combined plate. A lower combined plate is installed in the middle of the upper end of the connecting body, and a male socket and a positioning pin are arranged at the lower combined plate. The male socket can be inserted into the corresponding female socket, and the positioning pin can be inserted into the corresponding inner positioning sleeve. The present invention can reduce the impact and wear of each plug during the replacement process on the basis of ensuring the position accuracy of the filament winding head.

Description

Technical Field

[0001] The present invention belongs to the technical field of filament winding machines, and particularly relates to a quick-change structure for large functional components and a filament winding machine. Background Art

[0002] With the continuous progress of material science, high-performance and ultra-high-performance carbon fiber composite materials have received extensive attention and applications. This material not only has excellent mechanical properties but also shows great potential in many fields such as aerospace, automotive manufacturing, and sports goods.

[0003] At the same time, with the diverse requirements for composite products, the filament winding head in the production process of composite products also needs to be frequently replaced according to different material and process requirements to meet the process needs. At present, the traditional manual replacement method is not only time-consuming and laborious but also difficult to ensure the accuracy and consistency of the replacement process, thus restricting the efficient operation of the filament winding machine and the improvement of process quality. In view of this, most existing filament winding machines are equipped with a filament winding head quick-change device, and through this filament winding head quick-change device, the quick, accurate, and reliable replacement of the filament winding head is realized to improve the production efficiency and flexibility of the filament winding machine.

[0004] However, there are still certain limitations in the use of existing filament winding head quick-change devices: Although the existing filament winding head can achieve the quick disassembly and assembly between the filament winding head and the swing body through multiple plug-in structures, since each plug-in structure on the existing filament winding head quick-change device is a fixed structure, during the plugging process between the fixed end and the mobile end, it is very easy to cause interference between the fixed end and the mobile end in the filament winding head quick-change device due to the assembly and manufacturing errors of each component, thereby reducing the plugging accuracy of each plug, and even seriously, it will directly cause impact and wear to each plug during the plugging process. Summary of the Invention

[0005] The purpose of the present invention is to propose and design a quick-change structure for large functional components and a filament winding machine to overcome the problems such as low plugging accuracy and easy wear of plugs existing in the use of existing filament winding head quick-change devices, and enable it to overcome the above problems, while ensuring the position accuracy of the filament winding head, reducing the impact and wear of each plug during the replacement process.

[0006] To achieve the above object, on the one hand, the present invention provides a quick replacement structure for large functional components, which includes a fixed unit and a moving unit. The fixed unit includes a base, an upper equipment mating part is arranged at the upper end of the base, and a positioning shaft and a tensioning and locking assembly are arranged at the edge of the lower end of the base; the moving unit includes a connecting body, an outer positioning sleeve and a pull stud are arranged at the edge of the upper end of the connecting body, the outer positioning sleeve can be inserted into the corresponding positioning shaft, and the pull stud can be clamped by the corresponding tensioning and locking assembly; an upper combined plate is floatingly installed in the middle of the lower end of the base, and a female socket and an inner positioning sleeve are arranged at the upper combined plate; a lower combined plate is installed in the middle of the upper end of the connecting body, and a male socket and a positioning pin are arranged at the lower combined plate, the male socket can be inserted into the corresponding female socket, and the positioning pin can be inserted into the corresponding inner positioning sleeve; a lower equipment mating part is arranged at the lower end of the connecting body. At this time, since the upper combined plate of the present invention is floatingly installed on the base, during the insertion process of the fixed unit and the moving unit, the relative position relationship between the male socket and the female socket can be corrected through the floating of the upper combined plate, reducing the impact suffered during the insertion process, thereby improving the service life of each insertion structure arranged at the upper combined plate and the lower combined plate; at the same time, the floating positioning method of the upper combined plate also reduces the precision requirements between the pull stud and the tensioning and locking assembly, and between the positioning shaft and the outer positioning sleeve, improving the process adaptability of the quick replacement structure of large functional components.

[0007] Further, at least two mounting holes penetrate between the upper surface and the lower surface of the upper combined plate, a bushing is placed in each mounting hole, there is a gap between the outer wall of the bushing and the hole wall of the mounting hole, an outer flange is arranged at the lower end of the bushing after it extends out of the mounting hole, and there is a gap between the upper end surface of the outer flange and the lower end surface of the upper combined plate; the screw rod of the screw penetrates through the bushing from bottom to top and is threadedly connected to the base, and the upper combined plate is detachably installed on the base. At this time, the radial clearance value between the hole wall of the mounting hole and the outer wall of the bushing is the radial floating value of the upper combined plate, and the axial clearance value between the upper combined plate and the outer flange of the bushing is the axial floating value of the upper combined plate.

[0008] Further, the female socket includes an electrical female socket, the male socket includes an electrical male socket, and the electrical female socket can be electrically connected to the corresponding electrical pipeline in the equipment connected to the fixed unit, and the electrical male socket can be electrically connected to the corresponding electrical pipeline in the equipment connected to the moving unit, and is inserted into the electrical female socket.

[0009] Further, the female socket includes a pneumatic female socket, the male socket includes a pneumatic male socket, and the pneumatic male socket can be connected to the corresponding pneumatic pipeline in the equipment connected to the moving unit, and the pneumatic female socket can be connected to the corresponding pneumatic pipeline in the equipment connected to the fixed unit, and is inserted into the pneumatic male socket.

[0010] Further, the inner positioning sleeve includes at least one first inner positioning sleeve, and the inner cavity of the first inner positioning sleeve is cylindrical; the positioning pin includes at least one cylindrical pin, and the cylindrical pin is inserted into the corresponding first inner positioning sleeve to position the upper combined plate and the lower combined plate.

[0011] Further, the inner positioning sleeve includes at least one second inner positioning sleeve, and the inner cavity of the second inner positioning sleeve is prismatic; the positioning pin includes at least one diamond pin, and the diamond pin is inserted into the corresponding second inner positioning sleeve to position the upper combined plate and the lower combined plate.

[0012] Further, the lower part of the positioning shaft is successively provided with a frustum part and a shaft head part from top to bottom. The lower end of the frustum part is the end with a smaller diameter, and the lower end of the frustum part and the upper end of the shaft head part are smoothly connected through an inner concave surface. Chamfered corners are provided at the edges of the upper end and the lower end of the shaft head part; the inner cavity of the outer positioning sleeve is a stepped hole that is larger at the top and smaller at the bottom. The stepped surface of the stepped hole is inclined, and the large hole of the stepped hole can fit with the upper part of the positioning shaft, and the lower part of the stepped hole can fit with the shaft head part. At this time, through the above special structural shape provided at the lower end of the positioning shaft in the present invention and the special setting of the inner cavity of the outer positioning sleeve, it can use this chamfered corner structure to correct the horizontal position and the angle during the replacement process of the fiber placement head, that is, simultaneously complete the rough positioning, semi-precise positioning, and precise positioning between the fixed unit and the moving unit, and solve the technical problem of faults caused by the position error, angle error, or comprehensive position and angle error of the fiber placement head during the grasping process of the fiber placement head. At the same time, the positioning and repeated positioning accuracy of the fiber placement head replacement are improved.

[0013] Further, four positioning shafts are evenly arranged along the circumferential direction at the lower end of the base, and four outer positioning sleeves are evenly arranged along the circumferential direction at the upper end of the connecting body. The four outer positioning sleeves correspond to the four positioning shafts one by one.

[0014] Further, eight tensioning and locking assemblies are evenly arranged along the circumferential direction at the lower end of the base, and eight pull studs are evenly arranged along the circumferential direction at the upper end of the connecting body. The eight tensioning and locking assemblies correspond to the eight pull studs one by one, and the connection between the fixed unit and the moving unit can be realized through the clamping action between the eight tensioning and locking assemblies and the eight pull studs.

[0015] On the other hand, a fiber placement machine is also provided, which includes a fiber placement machine main body, and a fiber placement head driving mechanism and a fiber placement head are arranged on the fiber placement machine main body; it also includes the above-mentioned quick replacement structure for large functional components. The fixed unit of the above-mentioned quick replacement structure for large functional components is installed at the power output end of the fiber placement head driving mechanism, and the moving unit of the above-mentioned quick replacement structure for large functional components is installed at the connection end of the fiber placement head, and the quick connection between the fiber placement head and the fiber placement head driving mechanism is realized through the above-mentioned quick replacement structure for large functional components.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages:

[0017] 1. Since the upper composite plate of the present invention is floatingly mounted on the base, during the insertion process of the fixed unit and the moving unit, it can correct the relative position relationship between the male insertion head and the female insertion head through the floating of the upper composite plate, reduce the impact borne during the insertion process, and thus improve the service life of each insertion structure provided at the upper composite plate and the lower composite plate; at the same time, the floating positioning method of the upper composite plate also reduces the accuracy requirements between the rivets and the tensioning and locking components, and between the positioning shaft and the outer positioning sleeve, and improves the process adaptability of the quick replacement structure of large functional components;

[0018] 2. Through the special structural shape provided at the lower end of the positioning shaft of the present invention, it can perform horizontal position correction and angle correction by using this rounded corner structure during the replacement process of the fiber placement head, that is, simultaneously complete the rough positioning, semi-precise positioning and precise positioning between the fixed unit and the moving unit, solve the technical problems of failures caused by position errors, angle errors or combined position and angle errors of the fiber placement head during the grasping process of the fiber placement head, and at the same time improve the positioning and repeated positioning accuracy of the fiber placement head replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the bottom view of the fixed unit in Embodiment 1 of the present invention;

[0021] Figure 2 It is the top view of the moving unit in Embodiment 1 of the present invention;

[0022] Figure 3 It is the docking schematic diagram of the fixed unit and the moving unit in Embodiment 1 of the present invention;

[0023] Figure 4 It is Figure 3 the enlarged schematic diagram at A in

[0024] Figure 5 It is Figure 3 the enlarged schematic diagram at B in

[0025] Figure 6 It is the installation schematic diagram of the upper composite plate in Embodiment 1 of the present invention;

[0026] Figure 7 It is Figure 6 the enlarged schematic diagram at C in

[0027] Figure 8 This is a schematic structural diagram of the second embodiment of the present invention.

[0028] In the figure: 100, fixed unit; 200, moving unit; 300, fiber placement head driving mechanism; 400, fiber placement head;

[0029] 101, base; 102, tensioning and locking assembly; 103, positioning shaft; 1031, frustum part; 1032, shaft head part; 104, upper combined plate; 105, inner positioning sleeve two; 106, pneumatic male connector; 107, electrical male connector; 108, inner positioning sleeve one; 109, screw; 110, bushing;

[0030] 201, connecting body; 202, pull stud; 203, outer positioning sleeve, 204, lower combined plate; 205, diamond pin; 206, cylindrical pin, 207, pneumatic male connector; 208, electrical male connector;

[0031] L is the position tolerance of the fixed unit and the moving unit in the horizontal direction, m is the angular tolerance of the fixed unit and the moving unit in the vertical plane; n is the radial clearance value between the hole wall of the mounting hole and the outer wall of the bushing; p is the axial clearance value between the upper combined plate and the outer flange of the bushing. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] As Figures 1 to 7 shown, Embodiment 1 of the present invention provides a quick replacement structure for large functional components, which includes a fixed unit 100 for installation on the equipment main body, and a moving unit 200 for installation on the component to be replaced.

[0035] As Figure 1 shown, the fixed unit 100 includes a base 101, and an upper equipment mating part is provided at the upper end of the base 101, and it can be installed on the corresponding equipment main body through fasteners such as bolts or structures such as a clamping mechanism. A positioning shaft 103 and a tensioning and locking assembly 102 are provided at the edge of the lower end of the base 101. Among them, the number of the positioning shafts 103 is four, and the four positioning shafts 103 are evenly arranged along the circumference of the base 101 at the lower end of the base 101; the lower part of the positioning shaft 103 has a special shape. Specifically, asFigure 4 , Figure 5 As shown, the lower part of the positioning shaft 103 is successively provided with a frustum part 1031 and a shaft head part 1032 from top to bottom. The lower end of the frustum part 1031 is the end with a smaller diameter. The lower end of the frustum part 1031 and the upper end of the shaft head part 1032 are smoothly connected through an inner concave surface. Chamfers are provided at the edges of the upper end and the lower end of the shaft head part 1032. The number of the tensioning and locking assemblies 102 is eight, and the eight tensioning and locking assemblies 102 are evenly arranged along the circumferential direction at the lower end of the base 101. Two tensioning and locking assemblies 102 are arranged between any two adjacent positioning shafts 103.

[0036] The upper combined plate 104 is floatingly installed in the middle of the lower end of the base 101. Specifically, as Figure 6 , Figure 7 shown, at least two mounting holes penetrate between the upper surface and the lower surface of the upper combined plate 104. A bushing 110 is placed in each mounting hole. There is a gap between the outer wall of the bushing 110 and the hole wall of the mounting hole. An outer flange is provided at the lower end of the bushing 110 after it extends out of the mounting hole. There is a gap between the upper end surface of the outer flange and the lower end surface of the upper combined plate 104. The screw rod of the screw 109 penetrates through the bushing 110 from bottom to top and is threadedly connected to the base 101, and the upper combined plate 104 is detachably installed on the base 101. At this time, the upper combined plate 104 can move horizontally (i.e., radially float) and vertically (i.e., axially float) relative to the base 101. The radial clearance value between the hole wall of the mounting hole and the outer wall of the bushing 110 is the radial floating value of the upper combined plate 104, and the axial clearance value between the upper combined plate 104 and the outer flange of the bushing 110 is the axial floating value of the upper combined plate 104.

[0037] In addition, in the first embodiment, a female mating head and an inner positioning sleeve are further provided at the upper combined plate 104. Among them, the female mating head includes an electrical female mating head 107 and a pneumatic female mating head 106. The electrical female mating head 107 can be electrically connected to the corresponding electrical pipeline in the equipment connected to the fixing unit 100, and the pneumatic female mating head 106 can be connected to the corresponding pneumatic pipeline in the equipment connected to the fixing unit 100. The inner positioning sleeve includes at least one inner positioning sleeve one 108, and the inner cavity of the inner positioning sleeve one 108 is cylindrical; the inner positioning sleeve further includes at least one inner positioning sleeve two 105, and the inner cavity of the inner positioning sleeve two 105 is prismatic.

[0038] As Figure 2As shown, the mobile unit 200 includes a connecting body 201. A lower equipment mating part is provided at the lower end of the connecting body 201, and it can be installed on the corresponding component to be replaced through fasteners such as bolts or structures such as clamping mechanisms. An outer positioning sleeve 203 and a pull stud 202 are provided at the edge of the upper end of the connecting body 201. Among them, the number of the outer positioning sleeves 203 is four, and the four outer positioning sleeves 203 are evenly arranged along the circumferential direction of the connecting body 201 at the upper end of the connecting body 201; and the four outer positioning sleeves 203 can be inserted and corresponded to the four positioning shafts 103 one by one. At the same time, the shape of the inner cavity of the outer positioning sleeve 203 is stepped. Specifically, as Figure 4 , Figure 5 shown, the inner cavity of the outer positioning sleeve 203 is a stepped hole with a larger upper part and a smaller lower part, and the stepped surface of the stepped hole is inclined. The large hole of the stepped hole can be attached to the upper part of the positioning shaft 103, and the lower part of the stepped hole can be attached to the shaft head 1032. Thus, through the above special structural shape provided at the lower end of the positioning shaft 103 in the present invention and the special setting of the inner cavity of the outer positioning sleeve 203, the horizontal position correction and angle correction can be carried out by using this fillet structure during the filament placement head replacement process, that is, the rough positioning, semi-precise positioning and precise positioning between the fixed unit 100 and the mobile unit 200 are completed simultaneously, solving the technical problem of faults caused by the position error, angle error or comprehensive position and angle error of the filament placement head during the grasping process of the filament placement head, and at the same time improving the positioning and repeated positioning accuracy of the filament placement head replacement.

[0039] The number of the pull studs 202 is eight, and the eight pull studs 202 are evenly arranged along the circumferential direction of the connecting body 201 at the upper end of the connecting body 201, and the eight pull studs 202 can be clamped with the eight tensioning and locking assemblies 102 one by one to realize the connection between the fixed unit 100 and the mobile unit 200.

[0040] In the middle of the upper end of the connecting body 201, a lower combined plate 204 is installed, and a male docking connector and a positioning pin are arranged at the lower combined plate 204. Among them, the male docking connector includes an electrical male docking connector 208 and a pneumatic male docking connector 207. The electrical male docking connector 208 can be electrically connected to the corresponding electrical pipeline in the device connected to the mobile unit 200, and is inserted into the electrical female docking connector 107 in the fixed unit 100; the pneumatic male docking connector 207 can be connected to the corresponding pneumatic pipeline in the device connected to the mobile unit 200, and is inserted into the pneumatic female docking connector 106 in the fixed unit 100 to connect the corresponding pipelines. The positioning pin includes at least one cylindrical pin 206, and the cylindrical pin 206 is inserted into the corresponding inner positioning sleeve 108 to position the positions of the upper combined plate 104 and the lower combined plate 204; the positioning pin further includes at least one diamond pin 205, and the diamond pin 205 is inserted into the corresponding inner positioning sleeve 105 to position the positions of the upper combined plate 104 and the lower combined plate 204. At this time, during the docking process of the fixed unit 100 and the mobile unit 200, since in the first embodiment, the upper combined plate 104 is floatingly installed on the base 101, and in addition to respectively arranging corresponding female docking connectors and male docking connectors at the upper combined plate 104 and the lower combined plate 204, a positioning pin and an inner positioning sleeve are additionally arranged. It can correct the relative position relationship between the male docking connector and the female docking connector through the floating of the upper combined plate 104, reduce the impact suffered during the docking process, and further improve the service life of each docking structure arranged at the upper combined plate 104 and the lower combined plate 204; at the same time, the floating positioning method of the upper combined plate 104 also reduces the precision requirements between the pull stud 202 and the tensioning and locking assembly 102, and between the positioning shaft 103 and the outer positioning sleeve 203, and improves the process adaptability of the quick replacement structure of large functional components.

[0041] Based on this, the first embodiment can not only achieve accurate docking between the fixed unit 100 and the mobile unit 200, but also reduce the impact and wear of each plug during the replacement process on the basis of ensuring the position accuracy of the fiber placement head.

[0042] Embodiment 2

[0043] As Figure 8 shown, the second embodiment provides a fiber placement machine, which includes a fiber placement machine main body, and a fiber placement head driving mechanism 300 and a fiber placement head are arranged on the fiber placement machine main body; it also includes the above-mentioned quick replacement structure for large functional components. The fixed unit 100 of the above-mentioned quick replacement structure for large functional components is installed at the power output end of the fiber placement head driving mechanism 300, and the mobile unit 200 of the above-mentioned quick replacement structure for large functional components is installed at the connection end of the fiber placement head, and the quick connection between the fiber placement head and the fiber placement head driving mechanism 300 is realized through the above-mentioned quick replacement structure for large functional components.

[0044] The terms "first", "second", "third", "fourth", etc. (if any) in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick replacement structure for large functional components, comprising a fixed unit (100) and a movable unit (200), wherein the fixed unit (100) comprises a base (101), an upper device matching portion is arranged at the upper end of the base (101), and a positioning shaft (103) and a tensioning and locking assembly (102) are arranged at the edge of the lower end of the base (101); the movable unit (200) comprises a connecting body (201), an outer positioning sleeve (203) and a pull pin (202) are arranged at the edge of the upper end of the connecting body (201), the outer positioning sleeve (203) can be plugged with the corresponding positioning shaft (103), and the pull pin (202) can be clamped by the corresponding tensioning and locking assembly (102); characterized in that: An upper assembly plate (104) is installed in a floating manner in the middle of the lower end of the base (101), and a plug-in female head and an inner positioning sleeve are provided at the upper assembly plate (104); a lower assembly plate (204) is installed in the middle of the upper end of the connector (201), and a plug-in male head and a positioning pin are provided at the lower assembly plate (204), and the plug-in male head can be plugged into the corresponding plug-in female head, and the positioning pin can be plugged into the corresponding inner positioning sleeve; a lower device matching portion is provided at the lower end of the connector (201); the lower part of the positioning shaft (103) is sequentially arranged from top to bottom as a truncated cone portion (1031) and a shaft head portion (1032), the lower end of the truncated cone portion (1031) being an end with a smaller diameter, and the lower end of the truncated cone portion (1031) is smoothly connected to the upper end of the shaft head portion (1032) through an inner concave surface, and the edge of the upper end of the shaft head portion (1032) is connected to the The edges of the lower end of the shaft head (1032) are all provided with rounded corners; the inner cavity of the outer positioning sleeve (203) is a stepped hole that is larger at the top and smaller at the bottom, the stepped surface of the stepped hole is inclined, and the larger hole of the stepped hole can fit with the upper part of the positioning shaft (103), and the lower part of the stepped hole can fit with the shaft head (1032); at least two mounting holes are penetrated between the upper surface and the lower surface of the upper assembly plate (104), a shaft sleeve (110) is placed in each mounting hole, a gap exists between the outer wall of the shaft sleeve (110) and the hole wall of the mounting hole, an outer flange edge is provided at the lower end of the shaft sleeve (110) after extending out of the mounting hole, and a gap exists between the upper end surface of the outer flange edge and the lower end surface of the upper assembly plate (104); the screw rod of the screw (109) penetrates the shaft sleeve (110) from bottom to top and is threadedly connected to the base (101).

2. The rapid replacement structure for large functional components according to claim 1, characterized in that: The mating female connector includes an electrical mating female connector (107), and the mating male connector includes an electrical mating male connector (208).

3. The rapid replacement structure for large functional components according to claim 1, characterized in that: The mating female connector includes a pneumatic mating female connector (106), and the mating male connector includes a pneumatic mating male connector (207).

4. The rapid replacement structure for large functional components according to claim 1, characterized in that: The inner positioning sleeve includes at least one inner positioning sleeve one (108), the inner cavity of the inner positioning sleeve one (108) is cylindrical; the positioning pin includes at least one cylindrical pin (206), and the cylindrical pin (206) is plugged into the corresponding inner positioning sleeve one (108).

5. The rapid replacement structure for large functional components according to claim 1, characterized in that: The inner positioning sleeve comprises at least one inner positioning sleeve 2 (105), the inner cavity of the inner positioning sleeve 2 (105) being in the shape of a rhombus; the positioning pin comprises at least one rhombus-shaped pin (205), the rhombus-shaped pin (205) being plugged into the corresponding inner positioning sleeve 2 (105).

6. The rapid replacement structure for large functional components according to claim 1, characterized in that: The lower end of the base (101) is evenly provided with four positioning shafts (103) along the circumferential direction, and the upper end of the connecting body (201) is evenly provided with four external positioning sleeves (203) along the circumferential direction, and the four external positioning sleeves (203) correspond one to one to the four positioning shafts (103).

7. The rapid replacement structure for large functional components according to claim 1, characterized in that: The lower end of the base (101) is evenly provided with eight tensioning and locking assemblies (102) along the circumferential direction, and the upper end of the connecting body (201) is evenly provided with eight pull pins (202) along the circumferential direction, and the eight tensioning and locking assemblies (102) correspond to the eight pull pins (202) one by one.

8. A wire laying machine, comprising a wire laying machine body, on which a wire laying head driving mechanism (300) and a wire laying head (400) are arranged; characterized in that: It also includes a quick-change structure for large functional components according to any one of claims 1 to 7, wherein the fixed unit (100) of the quick-change structure for large functional components is installed at the power output end of the wire laying head drive mechanism (300), and the movable unit (200) of the quick-change structure for large functional components is installed at the connection end of the wire laying head (400).

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