A three-dimensional winding forming device and method for composite material pipe

Abstract

The present invention provides a three-dimensional winding forming device and method for composite material pipes, and relates to a winding forming device and method, comprising at least six groups of core blocks distributed in an annular shape and two groups of conical surface blocks arranged at both ends of the core blocks, wherein the end face of the core block on one side away from the shaft core is an arc surface, and the two ends are fitting inclined surfaces, and the fitting inclined surfaces at the two ends are expanded from the shaft core to the outside, and an outer conical surface is provided on the outside of the conical surface block for slidingly fitting with the fitting inclined surface, and the core block arc surface can be combined into a cylindrical shape with a breaking gap, which is used as a core mold during fiber winding, and during winding, the cylindrical shaft core and the arc surface shaft core of each core block are colinear, and the conical surface block is completely wrapped between the core blocks for axial movement, and a release agent is applied on the arc surface to facilitate demoulding after winding. The present invention can achieve faster demoulding, and can also be recycled, and has good stability, and is also convenient for later maintenance and replacement.

Description

Technical Field

[0001] The invention relates to a winding forming device and method, in particular to a three-dimensional winding forming device and method for a composite material pipe. Background Art

[0002] The three-dimensional winding molding technology of composite material tubes is a process of winding continuous fibers or cloth tapes impregnated with resin glue onto a core mold according to a certain pattern, and then curing and demolding to form a composite material product. This technology can be used to manufacture cylinders, spheres and certain positive curvature rotation bodies or cylindrical carbon fiber products. For example, a patented method for manufacturing a high-temperature resistant fiber-wound composite shell (Announcement No. CN104354436B) is a manufacturing method of this technology in the prior art. However, in this technology, when demolding, the method used is still: dissolving the core mold, taking out the mandrel, and removing the film wrapped around the middle barrel section of the core mold to obtain the composite material shell. Each time the core mold is dissolved, it is time-consuming and labor-intensive, and it also increases the production cost;

[0003] In order to solve the above technical problems, there are also solutions in the prior art, such as a patent of a fiber round tube winding device and its use method (publication number CN116373339A). However, the core mold body in this solution is a structural method in which a hinged bracket presses the pipe segment. In this method, the hinged bracket provides point contact support for the pipe segment, and the fiber material applies a tensioning pressure to the pipe segment as a whole in the three-dimensional winding around the core mold. Therefore, during winding, if the winding tension is too large, local deformation of the pipe segment in the non-pressure-bearing part may occur. At the same time, during the cyclic use of the pipe segment, the plane stability of the sheet-like structure is also poor. The continuous pressure at the hinge point on the pipe segment will also cause local deformation of the pipe segment. Once the pipe segment is deformed, when it is deformed during winding, it will affect the tensioning force during winding. At the same time, the structure formed by winding will also be deformed, resulting in poor stability of the formed structure. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a three-dimensional winding molding device and method for composite material tubes, whose core mold can not only achieve faster demolding, but also can be recycled. At the same time, during three-dimensional winding, since the core block of the supporting part is a solid supporting part, pressure deformation of the winding surface is not easy to occur during recycling, and the overall structure can be easily disassembled, which is also convenient for later maintenance and replacement.

[0005] The present invention provides the following technical solutions:

[0006] A three-dimensional winding forming device and method for composite material pipes, comprising at least six groups of core blocks distributed in an annular shape and two groups of conical blocks arranged at both ends of the core blocks, wherein the end face of the core block on one side away from the shaft core is an arc surface, and the two ends thereof are fitting inclined surfaces, and the fitting inclined surfaces at the two ends are expanded outward from the shaft core, and the conical block is provided with an outer conical surface that is slidably matched with the fitting inclined surface, and the fitting inclined surface is provided with a T-shaped slide bar, and the outer conical surface is provided with a T-shaped slide groove that is slidably connected with the T-shaped slide bar of each core block, and when the two groups of conical blocks move synchronously toward or away from each other, the core blocks are driven to synchronously move away from the shaft core in the radial direction. When the core blocks move radially away from the shaft core and move radially to the winding working position, the arc surfaces are combined into a cylindrical shape with a discontinuous gap, which is used as a core mold for fiber winding. At this time, the cylindrical shaft core and the arc surface shaft core of each core block are colinear, and the conical surface blocks are completely wrapped between the core blocks for axial movement. A release agent is applied on the arc surface to facilitate demolding after winding. During the winding operation, the two groups of conical surface blocks are installed and positioned on the core mold rotation driving end of the winding equipment to rotate with the core mold rotation driving end. The winding equipment is a prior art and will not be described in detail here.

[0007] In the device of the present invention, when the number of core blocks is increased, that is, the circumferential separation angle of each core block forming the cylindrical shape is decreased, when the core blocks move radially away from the shaft core to the winding working position, the separation gap between two adjacent groups of core blocks is also decreased, thereby making the molding surface of the formed tubular structure smoother. This is the reason for the combination of at least six groups of core blocks, thereby ensuring the circumferential smoothness of the formed tubular structure.

[0008] When demoulding, it is only necessary to drive the two sets of cone blocks to move in opposite directions at the same time, so that the core block moves radially toward the shaft core. Since the release agent is applied on the arc surface, the core block can be easily detached from the inner side of the composite material tube that is wound in a cylindrical shape and cured.

[0009] During demoulding, the two sets of cone blocks must move synchronously toward or away from each other to drive the core block to move. If they are not synchronized, it will be difficult to change the position. This structural setting can also ensure the stability of the core block during the winding operation after it is positioned at the winding work position.

[0010] Preferably, in order to facilitate the synchronous operation of the two groups of conical blocks, it is set that: the center thread of the conical block is connected with a group of screw rods, the two groups of conical blocks are respectively a first conical block and a second conical block, the corresponding screws are the first screw and the second screw, and the first screw and the second screw are in opposite directions of the threaded connection between the two groups of conical blocks, the center guide of the first screw passes through a group of first guide rods with a rectangular cross-section, and the end of the second screw is provided with a second guide groove which is plugged into the end of the first guide rod. When the first guide rod passes through the first screw and is inserted into the second guide groove, the first screw and the second screw form a whole that rotates synchronously through the first guide rod, that is, only one group of the first screw and the second screw is rotated to achieve the synchronous rotation of the first screw and the second screw, and because the first conical block and the second conical block are threadedly connected to the first screw and the second screw, and the first screw and the second screw are in opposite directions of the threaded connection between the two groups of conical blocks, the two groups of conical blocks can be driven to move synchronously away from or towards each other.

[0011] Preferably, in order to ensure the automation of demoulding and improve the efficiency of demoulding, it is set that: the first cone block is connected to the outside of the first connecting block, the second cone block is connected to the outside of the second connecting block, the first cone block and the second cone block are connected to the core mold rotation drive end of the winding device through the first connecting block and the second connecting block, the first connecting block is provided with a pushing drive part for pushing the first guide rod, and the second connecting block is provided with a demoulding drive part for driving the second screw rod to rotate;

[0012] The setting of the push drive part can realize that the first guide rod automatically passes through the first screw rod and is inserted into the second guide groove, so that the first screw rod and the second screw rod form a synchronously rotating whole through the first guide rod, and the first screw rod and the second screw rod automatically rotate.

[0013] The setting of the demoulding drive part can realize the automatic rotation of the second screw, and then drive the two groups of conical blocks to move synchronously away from or towards each other through the synchronous rotation of the first screw and the second screw. When the two groups of conical blocks move away from each other, they can drive the core block to move radially toward the axis core, and then break away from the inner wall of the cylindrical product, realizing rapid demoulding. After demoulding, through reverse driving, it can wait for the next winding again.

[0014] Preferably, the first connecting block and the second connecting block are columnar blocks coaxially distributed with the first screw, the second screw, the first cone block and the second cone block, and their diameters are smaller than the cone bottom diameters of the first cone block and the second cone block, the first cone block is provided with at least two groups of first plug rods inserted and connected in the first connecting block, the end of the first screw is provided with a first swivel installed in the first connecting block, the second cone block is provided with at least two groups of second plug rods inserted and connected in the second connecting block, and the end of the second screw is provided with a second swivel installed in the second connecting block. Therefore, when the core mold rotation driving end of the winding device drives the core block to rotate through the two groups of cone surface blocks, it will not drive the first screw and the second screw to move relative to the first cone block and the second cone block. At this time, the push driving part, the demoulding driving part and the screw do not need to be disassembled and separated for use during work, that is, the winding operation and the demoulding operation do not need to disassemble and separate the structure of the device, ensuring more convenient use;

[0015] During actual operation, the driving device at the core mold rotation driving end of the winding equipment first drives the rotation of the second connecting block, and the second connecting block synchronously drives the movement of the second cone block. At the same time, the demolding driving part therein also synchronously drives the movement of the second screw. Then, the second cone block drives the first cone block to move through the core block, and the second screw synchronously drives the first screw to move, and then transmits the rotational driving force to the first connecting block. At this point, the first connecting block and the second connecting block installed at the core mold rotation driving end of the winding equipment can realize the rotational winding operation driven by the driving device at the core mold rotation driving end of the winding equipment.

[0016] Preferably, the pushing drive part includes a pushing cylinder and a rotating head installed at the driving end of the pushing cylinder, the first screw is inserted into the first connecting block, and the end of the first guide rod therein facing away from the second guide groove is connected to the rotating head adapter, when demoulding is required, the pushing cylinder is started, and the pushing drive first guide rod is inserted into the second guide groove, thereby realizing the integrated combination of the first screw and the second screw.

[0017] Preferably, the demoulding drive unit comprises a rotating motor, a rotating block, a cross slot 1 and a cross slot 2, the rotating motor is fixedly installed in the second connecting block, the rotating block is transfer-installed in the second connecting block, one side of the rotating block is arranged with a cross slot 1, and the other side of the rotating block is arranged with a cross slot 2, the driving end of the rotating motor is connected with a group of cross plug blocks 1 plugged with the cross slot 1, and the end of the second screw is connected with a group of cross plug blocks 2 plugged with the cross slot 2;

[0018] Therefore, when the driving end of the rotating motor rotates, the second screw can be driven to rotate through the rotating block. Since the rotational motion is transmitted by a group of rotating blocks installed in the second connecting block, the transmission stability of the rotational motion can be ensured to be better.

[0019] Preferably, the first connecting block comprises a detachably mounted first outer connecting block and a first inner connecting block, a first rotating groove for accommodating a first rotating ring is formed on one side where the first outer connecting block and the first inner connecting block are butted against each other, and the pushing driving part is fixedly mounted in the first outer connecting block, and the second connecting block comprises a detachably mounted second outer connecting block and a second inner connecting block, a second rotating groove for accommodating a second rotating ring is formed on two sides where the second outer connecting block and the second inner connecting block are butted against each other, and the demoulding driving part is fixedly mounted in the second outer connecting block, and the first outer connecting block and the second outer connecting block are positioned and mounted on the core mold rotation driving end of the winding device;

[0020] The core mold rotation driving end of the winding equipment includes a bottom plate and a side vertical plate 1 and a side vertical plate 2 which are slidably mounted on the bottom plate and distributed in parallel, the first external connecting block and the second external connecting block are mounted on the side vertical plate 1 and the side vertical plate 2 through a seat bearing, and the bottoms of the side vertical plate 1 and the side vertical plate 2 are screwed and mounted outside a group of screw rods, both ends of the screw rods are mounted on the bottom plate, and are driven to rotate by a screw motor to drive the side vertical plate 1 and the side vertical plate 2 to move toward or away from each other, and a driving motor for connecting to the second external connecting block is also installed on the side vertical plate 2. At this point, after the winding operation, the side vertical plate 1 and the side vertical plate 2 move away from each other under the drive of the screw rod, which can drive the side vertical plate 1 and the side vertical plate 2 to move away from each other, and now it is completed. The first outer connecting block and the first inner connecting block can be disassembled, and the second outer connecting block and the second inner connecting block can be disassembled, so that the first outer connecting block and the first inner connecting block, and the second outer connecting block and the second inner connecting block can be separated. At this point, the core mold can be separated from the core mold rotation driving end of the winding device, which is more convenient and has a higher degree of automation. The detachable connection between the first outer connecting block and the first inner connecting block and the detachable connection between the second outer connecting block and the second inner connecting block can be locked by screws, and can also be guided and plugged by at least two groups of positioning rods parallel to the axis core, that is, the positioning rods are fixed on the first outer connecting block and the second outer connecting block. When the side plate one and the side plate two move toward each other, the positioning rods are plugged into the first inner connecting block and the second inner connecting block to achieve a positioning connection, which is more convenient and simple.

[0021] Preferably, in order to eliminate the influence of the disconnecting gap between the arc surfaces of each core block on the arc degree of winding molding during winding, a group of sealing push cylinders are provided in each core block, and the driving end of the sealing push cylinder is hingedly mounted on one end of a group of sealing plates, and the other end of the sealing plate is transfer-mounted on the end side of the core block. The sealing plate is driven by the sealing push cylinder to rotate and seal in the disconnecting gap between the two groups of core blocks, and is connected with the arc surface of the core block to form a core mold for fiber winding.

[0022] A three-dimensional winding method for a composite material tube, based on the above-mentioned three-dimensional winding device for a composite material tube, comprises the following steps:

[0023] S1: Install the first outer connecting block and the second outer connecting block on the side vertical plate 1 and the side vertical plate 2, start the screw motor, drive the screw to rotate, so that the first outer connecting block is connected to the first inner connecting block, and the second outer connecting block is connected to the second inner connecting block;

[0024] S2: Start the push cylinder to drive the first guide rod to be inserted and positioned in the second screw rod, and then start the rotating motor to drive the second screw rod and the first screw rod to rotate on the corresponding second cone block and the first cone block inner thread, and then drive the first cone block and the second cone block to move synchronously towards each other, so as to drive the core block to move away from the shaft core and radially to the winding working position, and apply a release agent on the arc surface of the core block. After completing the winding process, start the screw rod to rotate again, so that the side plate 1 and the side plate 2 drive the first outer connecting block and the second outer connecting block to separate from the first inner connecting block and the second inner connecting block, and then send the core mold assembly with the first inner connecting block and the second inner connecting block into the curing furnace for curing;

[0025] S3: After the curing is completed, take it out and start the push cylinder again to drive the first guide rod to be inserted and positioned in the second screw, and then start the rotating motor again to drive the second screw and the first screw to rotate in the corresponding second cone block and the first cone block. The first cone block and the second cone block move synchronously in opposite directions to drive the core block to move radially toward the axis core, so that the arc surface of the core block is separated from the inner wall of the composite tube, and then the composite tube is removed from one end after being separated, and the demolding is completed. Since the cone surface block is completely wrapped between the core blocks for axial movement, and the columnar diameters of the first connecting block and the second connecting block are smaller than the cone bottom diameters of the first cone block and the second cone block, it will not cause obstacles to the product separation during demolding.

[0026] The beneficial effects of the present invention are:

[0027] In the device of the present invention, when demoulding, it is only necessary to drive the two groups of cone blocks to move in opposite directions at the same time, so that the core block moves radially toward the shaft core. Since the release agent is applied on the arc surface, the core block can be easily separated from the winding cylindrical and the inner side of the cured composite material tube, so as to achieve the purpose of faster demoulding, and it can also be recycled after demoulding. At the same time, during three-dimensional winding, since the core block at the supporting part is a solid supporting part, it is not easy to cause pressure deformation of the winding surface during recycling, and the overall structure can be easily disassembled, which is also convenient for later maintenance and replacement;

[0028] In application, the number of core blocks can be selected according to the needs. When the number of core blocks selected is more, that is, the circumferential separation angle of each core block constituting the tube is smaller, when the core blocks move away from the shaft core and move radially to the winding working position, the separation gap between two adjacent groups of core blocks is also smaller, so that the molding surface of the formed tubular structure is smoother. This is the reason for the combination of at least six groups of core blocks, so as to ensure the circumferential smoothness of the formed tubular structure.

[0029] During demoulding, the two sets of cone blocks must move synchronously toward or away from each other to drive the core block to move. If they are not synchronized, it will be difficult to change the position. This structural setting can also further ensure the stability of the core block during the winding operation after it is positioned at the winding work position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0032] Figure 2 It is a side view schematic diagram of the combination of six groups of core blocks during demoulding;

[0033] Figure 3 It is a side view schematic diagram of the combination of six groups of core blocks during winding operation;

[0034] Figure 4 It is a side view schematic diagram of the combination of twelve groups of core blocks during winding operation;

[0035] Figure 5 It is a schematic structural diagram of the distribution of the conical surface block, the screw and the core block in Example 2 of the present invention;

[0036] Figure 6 yes Figure 5 A schematic diagram of the structure when the screws in the two sets of cone blocks are butted together;

[0037] Figure 7 yes Figure 6 A schematic diagram of a structure in which a first connection block and a second connection block are connected;

[0038] Figure 8 yes Figure 7 Schematic diagram of the structure during demoulding and splitting;

[0039] Fig. 9 It is a schematic diagram of the structure on one side of the rotating block;

[0040] Fig.10 It is a schematic diagram of the structure on the other side of the rotating block;

[0041] Fig.11 This is a schematic structural diagram of the sealing plate driven by the sealing push cylinder in Example 3;

[0042] Markings in the figure:

[0043] 1. Core block; 2. Conical surface block; 3. Circular arc surface; 4. Fitting inclined surface; 5. T-shaped slide bar; 6. Side vertical plate 1; 7. Side vertical plate 2; 8. Bottom plate; 9. Screw rod; 10. Drive motor; 11. Sealing cylinder; 12. Sealing plate; 21. First screw rod; 22. Second screw rod; 23. First guide rod; 24. Second guide groove; 25. First connecting block; 26. Second connecting block; 27. Pushing drive unit; 28. Demolding drive unit; 251. First plug rod; 252. First rotating ring; 253. First outer connecting block; 254. First inner connecting block; 261. Second plug rod; 262. Second rotating ring; 263. Second outer connecting block; 264. Second inner connecting block; 271. Pushing cylinder; 272. Rotating head; 281. Rotating motor; 282. Rotating block; 283. Cross slot 1; 284. Cross slot 2. DETAILED DESCRIPTION

[0044] Example 1

[0045] like Figure 1-4 As shown, a three-dimensional winding forming device for a composite material pipe, in this embodiment, includes at least six groups of core blocks 1 distributed in an annular shape and two groups of conical blocks 2 arranged at both ends of the core blocks 1, the end surface of the core block 1 on one side away from the shaft core is an arc surface 3, and the two ends thereof are fitting inclined surfaces 4, and the fitting inclined surfaces 4 at both ends are expanded from the shaft core to the outside, and the conical block 2 is provided with an outer conical surface that is slidably matched with the fitting inclined surface 4, and the fitting inclined surface 4 is provided with a T-shaped slide bar 5, and the outer conical surface is provided with a T-shaped slide groove that is slidably connected with the T-shaped slide bar 5 of each core block 1. When the two groups of conical blocks 2 move synchronously toward or away from each other, the core block 1 is driven to move synchronously away from each other. When the core moves radially away from the shaft core or moves radially toward the shaft core, and each core block 1 moves radially away from the shaft core to the winding working position, its arc surface 3 is combined into a cylindrical shape with a disconnected gap, which is used as a core mold for fiber winding. At this time, the cylindrical shaft core and the arc surface 3 of each core block 1 are colinear, and the conical surface block 2 is completely wrapped between the core blocks 1 for axial movement. A release agent is applied on the arc surface 3 to facilitate demolding after winding. During the winding operation, the two groups of conical surface blocks 2 are installed and positioned at the core mold rotation drive end of the winding equipment to rotate with the core mold rotation drive end. The winding equipment is a prior art and will not be described in detail here.

[0046] In the device of the present invention, when demoulding, it is only necessary to drive the two groups of cone blocks 2 to move in opposite directions at the same time, so that the core block 1 moves radially toward the axis core. Since the release agent is applied on the arc surface 3, the core block 1 can be easily detached from the inner side of the composite material tube after winding in a cylindrical shape and solidification, so as to achieve the purpose of faster demoulding, and it can also be recycled after demoulding. At the same time, during three-dimensional winding, since the core block 1 at the supporting part is a solid supporting part, it is not easy to cause pressure deformation of the winding surface during recycling, and the overall structure can be easily disassembled, which is also convenient for later maintenance and replacement;

[0047] In application, the number of core blocks 1 can be selected according to the needs. When the number of core blocks 1 selected is more, that is, the circumferential separation angle of each core block 1 constituting the cylindrical shape is smaller, when the core block 1 moves away from the shaft core and moves radially to the winding working position, the separation gap between two adjacent groups of core blocks 1 is also smaller, so that the molding surface of the formed tubular structure is smoother. This is the reason for the combination of at least six groups of core blocks 1, so as to ensure the circumferential smoothness of the formed tubular structure.

[0048] During demoulding, the two sets of cone blocks 2 must move synchronously toward or away from each other to drive the core block 1 to move. If they are not synchronized, it will be difficult to change the position. This structural setting can also further ensure the stability of the core block 1 during the winding operation after it is positioned at the winding work position.

[0049] Example 2

[0050] like Figure 5-10 As shown, a three-dimensional winding forming device for a composite material pipe is further limited based on Example 1 in this embodiment. In order to facilitate the synchronous operation of the two groups of cone blocks 2, it is set that: the center thread of the cone block 2 is connected with a group of screws, the two groups of cone blocks 2 are respectively the first cone block and the second cone block, and the corresponding screws are the first screw 21 and the second screw 22, and the first screw 21 and the second screw 22 are opposite to the threaded connection between the two groups of cone blocks 2. The center guide of the first screw 21 passes through a group of first guide rods 23 with a rectangular cross-section, and the end of the second screw 22 is provided with an end of the first guide rod 23. The second guide groove 24 is plug-fitted. When the first guide rod 23 passes through the first screw rod 21 and is inserted into the second guide groove 24, the first screw rod 21 and the second screw rod 22 form a whole that rotates synchronously through the first guide rod 23. That is, only by rotating one of the first screw rod 21 and the second screw rod 22, the synchronous rotation of the first screw rod 21 and the second screw rod 22 can be achieved. Since the first cone block and the second cone block are threadedly connected to the first screw rod 21 and the second screw rod 22, and the rotation directions of the threaded connections between the first screw rod 21 and the second screw rod 22 and the two groups of cone surface blocks 2 are opposite, the two groups of cone surface blocks 2 can be driven to move synchronously away from or towards each other.

[0051] In order to ensure the automation of demoulding and improve the efficiency of demoulding, it is set that: the first cone block is connected to the outside of the first cone block with a first connecting block 25, the second cone block is connected to the outside of the second cone block with a second connecting block 26, the first cone block and the second cone block are connected to the core mold rotation drive end of the winding device through the first connecting block 25 and the second connecting block 26, the first connecting block 25 is provided with a pushing drive part 27 for pushing the first guide rod 23, and the second connecting block 26 is provided with a demoulding drive part 28 for driving the second screw rod 22 to rotate;

[0052] The setting of the push driving part 27 can realize that the first guide rod 23 automatically passes through the first screw rod 21 and is inserted into the second guide groove 24, so that the first screw rod 21 and the second screw rod 22 form a synchronously rotating whole through the first guide rod 23. The first screw rod 21 and the second screw rod 22 automatically rotate.

[0053] The arrangement of the demoulding drive unit 28 can realize the automatic rotation of the second screw 22, and then drive the two groups of conical blocks 2 to move synchronously in opposite directions or towards each other through the synchronous rotation of the first screw 21 and the second screw 22. When the two groups of conical blocks 2 move in opposite directions, the core block 1 can be driven to move radially toward the axis core, thereby breaking away from the inner wall of the product wound in a cylindrical shape, and realizing rapid demoulding. After demoulding, the product can wait for the next winding again through reverse driving.

[0054] The first connecting block 25 and the second connecting block 26 are columnar blocks coaxially distributed with the first screw 21, the second screw 22, the first cone block and the second cone block, and their diameters are smaller than the cone bottom diameters of the first cone block and the second cone block. The first cone block is provided with at least two groups of first plug rods 251 inserted and connected in the first connecting block 25, and the end of the first screw 21 is provided with a first swivel 252 installed in the first connecting block 25. The second cone block is provided with at least two groups of second plug rods 261 inserted and connected in the second connecting block 26, and the second screw The end of 22 is provided with a second rotating ring 262 which is installed in the second connecting block 26. Therefore, when the core mold rotating driving end of the winding device drives the core block 1 to rotate through the two sets of cone blocks 2, the first screw 21 and the second screw 22 will not be driven to move relative to the first cone block and the second cone block. At this time, the push driving part 27, the demoulding driving part 28 and the screw do not need to be disassembled and separated during work, that is, the winding operation and the demoulding operation do not need to disassemble and separate the structure of the device, ensuring more convenient use.

[0055] During actual operation, the driving device at the core mold rotation driving end of the winding equipment first drives the rotation of the second connecting block 26, and the second connecting block 26 synchronously drives the movement of the second cone block. At the same time, the demolding driving part 28 therein also synchronously drives the movement of the second screw 22. Then, the second cone block drives the first cone block to move through the core block 1, and the second screw 22 synchronously drives the first screw 21 to move, and then transmits the rotational driving force to the first connecting block 25. At this point, the first connecting block and the second connecting block installed at the core mold rotation driving end of the winding equipment can realize the rotational winding operation driven by the driving device at the core mold rotation driving end of the winding equipment.

[0056] The pushing drive part 27 includes a pushing cylinder 271 and a rotating head 272 installed at the driving end of the pushing cylinder 271. The first screw 21 is inserted into the first connecting block 25, and the end of the first guide rod 23 therein that is away from the second guide groove 24 is connected to the rotating head 272. When demoulding is required, the pushing cylinder 271 is started, and the first guide rod 23 is pushed and driven to be inserted into the second guide groove 24, thereby realizing the integrated combination of the first screw 21 and the second screw 22.

[0057] The demoulding drive unit 28 includes a rotating motor 281, a rotating block 282, a cross slot 1 283 and a cross slot 284. The rotating motor 281 is fixedly installed in the second connecting block 26, and the rotating block 282 is installed in the second connecting block. A cross slot 1 283 is arranged on one side, and a cross slot 284 is arranged on the other side. A group of cross plug blocks 1 plugged with the cross slot 1 283 are connected to the driving end of the rotating motor 281, and a group of cross plug blocks 2 plugged with the cross slot 284 are connected to the end of the second screw rod 22.

[0058] Therefore, when the driving end of the rotating motor 281 rotates, the second screw 22 can be driven to rotate through the rotating block 282. Since the rotational motion is transmitted by a group of rotating blocks 282 installed in the second connecting block 26, the transmission stability of the rotational motion can be ensured to be better.

[0059] The first connecting block 25 includes a detachably mounted first outer connecting block 253 and a first inner connecting block 254, a first rotating groove for accommodating the first rotating ring 252 is formed on one side where the first outer connecting block 253 and the first inner connecting block 254 are butted together, and the push driving part 27 is fixedly installed in the first outer connecting block 253, the second connecting block 26 includes a detachably mounted second outer connecting block 263 and a second inner connecting block 264, a second rotating groove for accommodating the second rotating ring 262 is formed on two sides where the second outer connecting block 263 and the second inner connecting block 264 are butted together, and the demoulding driving part 28 is fixedly installed in the second outer connecting block 263, and the first outer connecting block 253 and the second outer connecting block 263 are positioned and installed at the core mold rotation driving end of the winding device;

[0060] The core mold rotation driving end of the winding equipment includes a bottom plate 8 and a side vertical plate 1 6 and a side vertical plate 2 7 which are slidably mounted on the bottom plate 8 and are distributed in parallel. The first outer connecting block 253 and the second outer connecting block 263 are mounted on the side vertical plate 1 6 and the side vertical plate 2 7 through a seat bearing, and the bottoms of the side vertical plate 1 6 and the side vertical plate 2 7 are screwed and mounted on the outside of a group of screw rods 9. The two ends of the screw rods 9 are mounted on the bottom plate 8 and driven to rotate by a screw motor to drive the side vertical plate 1 6 and the side vertical plate 2 7 to move toward or away from each other. A driving motor 10 for driving and connecting with the second outer connecting block 263 is also installed on the side vertical plate 2 7. At this point, after the winding operation, the side vertical plate 1 6 and the side vertical plate 2 7 move away from each other under the drive of the screw rod 9, which can drive the side vertical plate 1 6 and the side vertical plate 2 7 to move away from each other. At this time, the first outer connecting block 253 and the first inner connecting block 254 are completed. The disassembly of the second outer connecting block 263 and the second inner connecting block 264 can realize the separation of the first outer connecting block 253 and the first inner connecting block 254, the second outer connecting block 263 and the second inner connecting block 264, so that the core mold can be separated from the core mold rotation driving end of the winding equipment, which is more convenient and has a higher degree of automation. The detachable connection between the first outer connecting block 253 and the first inner connecting block 254 and the detachable connection between the second outer connecting block 263 and the second inner connecting block 264 can be locked by screws, and can also be guided and plugged by at least two groups of positioning rods parallel to the axis core, that is, the positioning rods are fixed on the first outer connecting block 253 and the second outer connecting block 263, and when the side plate 1 6 and the side plate 2 7 move toward each other, the positioning rods are plugged into the first inner connecting block 254 and the second inner connecting block 264 to realize the positioning connection, which is more convenient and simple.

[0061] A three-dimensional winding method for a composite material tube, based on the above-mentioned three-dimensional winding device for a composite material tube, comprises the following steps:

[0062] S1: Install the first outer connecting block 253 and the second outer connecting block 263 on the side vertical plate 1 6 and the side vertical plate 2 7, start the screw motor, drive the screw 9 to rotate, so that the first outer connecting block 253 is connected to the first inner connecting block 254, and the second outer connecting block 263 is connected to the second inner connecting block 264;

[0063] S2: Start the push cylinder 271 to drive the first guide rod 23 to be inserted and positioned in the second screw rod 22, and then start the rotating motor 281 to drive the second screw rod 22 and the first screw rod 21 to rotate in the corresponding second cone block and the first cone block internal threads, and then drive the first cone block and the second cone block to move synchronously towards each other, so as to drive the core block 1 to move away from the axis core and radially to the winding working position, and apply a release agent on the arc surface 3 of the core block 1. After completing the winding process, start the screw rod 9 to rotate again, so that the side plate 1 6 and the side plate 2 7 drive the first outer connecting block 253 and the second outer connecting block 263 to separate from the first inner connecting block 254 and the second inner connecting block 264, and then send the core mold combination with the first inner connecting block 254 and the second inner connecting block 264 into the curing furnace for curing;

[0064] S3: After curing is completed, take it out and start the push cylinder 271 again to drive the first guide rod 23 to be inserted and positioned in the second screw 22, and then start the rotating motor 281 again to drive the second screw 22 and the first screw 21 to rotate in the corresponding second cone block and the first cone block. The first cone block and the second cone block move synchronously in opposite directions to drive the core block 1 to move radially toward the axis core, so that the arc surface 3 of the core block 1 is separated from the inner wall of the composite tube, and then the composite tube is removed from one end after being separated, that is, demolding is completed. Since the cone surface block 2 is completely wrapped between the core block 1 for axial movement, and the columnar diameters of the first connecting block 25 and the second connecting block 26 are smaller than the cone bottom diameters of the first cone block and the second cone block, it will not cause obstacles to the product separation during demolding.

[0065] Example 3

[0066] like Fig.11 As shown, a three-dimensional winding molding device for a composite material tube is further limited based on Example 1 in this embodiment. In order to eliminate the influence of the disconnecting gap between the arc surface 3 of each core block 1 on the arc degree of winding molding during winding, a group of sealing push cylinders 11 are also provided in each core block 1. The driving end of the sealing push cylinder 11 is hingedly installed on one end of a group of sealing plates 12, and the other end of the sealing plate 12 is transfer-installed on the end side of the core block 1. The sealing plate 12 is driven by the sealing push cylinder 11 to rotate and seal in the disconnecting gap between the two groups of core blocks 1, and is connected with the arc surface 3 of the core block 1 to form a core mold for fiber winding.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-dimensional winding forming device for a composite material pipe, characterized in that: The invention comprises at least six groups of core blocks (1) distributed in an annular shape and two groups of conical blocks (2) arranged at both ends of the core blocks (1); the end surface of the core block (1) on one side away from the shaft core is an arc surface (3); the two ends are fitting inclined surfaces (4); and the fitting inclined surfaces (4) at the two ends are expanded outward from the shaft core; the conical blocks (2) are provided with an outer conical surface slidingly matched with the fitting inclined surface (4); the fitting inclined surface (4) is provided with a T-shaped sliding bar (5); the outer conical surface is provided with a T-shaped sliding groove corresponding to and slidingly connected with the T-shaped sliding bar (5) of each core block (1); when the two groups of conical blocks (2) move synchronously toward or away from each other, the core blocks (1) are driven. Synchronously moving away from the shaft core in radial direction or moving towards the shaft core in radial direction, and when each core block (1) moves away from the shaft core in radial direction to the winding working position, its arc surface (3) is combined into a cylindrical shape with a disconnected gap, which is used as a core mold during fiber winding. At this time, the cylindrical shaft core and the arc surface (3) of each core block (1) are colinear, and the conical surface block (2) is completely wrapped between the core blocks (1) and moves axially. A demoulding agent is applied on the arc surface (3) to facilitate demoulding after winding. During the winding operation, the two groups of conical surface blocks (2) are installed and positioned on the core mold rotating drive end of the winding equipment to rotate with the core mold rotating drive end; The center thread of the conical surface block (2) is connected to a group of screw rods, the two groups of conical surface blocks (2) are respectively a first conical block and a second conical block, and the corresponding screw rods are a first screw rod (21) and a second screw rod (22), and the first screw rod (21) and the second screw rod (22) are threadedly connected to the two groups of conical surface blocks (2) in opposite directions, the center guide of the first screw rod (21) passes through a group of first guide rods (23) with a rectangular cross section, and the end of the second screw rod (22) is provided with a second guide groove (24) plug-fitted with the end of the first guide rod (23), when the first guide rod (23) passes through the first screw rod (21) and is inserted into the second guide groove (24), the first screw rod (21) and the second screw rod (22) form a whole body that rotates synchronously through the first guide rod (23); The first cone block is externally connected to a first connecting block (25), and the second cone block is externally connected to a second connecting block (26). The first cone block and the second cone block are connected to a core mold rotation drive end of the winding device through the first connecting block (25) and the second connecting block (26). The first connecting block (25) is provided with a pushing drive unit (27) for pushing the first guide rod (23), and the second connecting block (26) is provided with a demoulding drive unit (28) for driving the second screw rod (22) to rotate. The first connecting block (25) and the second connecting block (26) are columnar blocks coaxially distributed with the first screw rod (21), the second screw rod (22), the first cone block and the second cone block, and their diameters are smaller than the cone bottom diameters of the first cone block and the second cone block; the first cone block is provided with at least two groups of first plug rods (251) inserted and connected in the first connecting block (25); the end of the first screw rod (21) is provided with a first rotating ring (252) installed in the first connecting block (25); the second cone block is provided with at least two groups of second plug rods (261) inserted and connected in the second connecting block (26); the end of the second screw rod (22) is provided with a second rotating ring (262) installed in the second connecting block (26); The pushing drive unit (27) comprises a pushing cylinder (271) and a rotating head (272) installed at the driving end of the pushing cylinder (271); the first screw rod (21) is inserted into the first connecting block (25); and the end of the first guide rod (23) therein that is away from the second guide groove (24) is connected to the rotating head (272); The demoulding drive unit (28) comprises a rotating motor (281), a rotating block (282), a cross slot one (283) and a cross slot two (284); the rotating motor (281) is fixedly mounted in the second connecting block (26); the rotating block (282) is transfer mounted in the second connecting block, one side of the rotating motor (282) is provided with a cross slot one (283) and the other side of the rotating block (282) is provided with a cross slot two (284); the driving end of the rotating motor (281) is connected with a group of cross slot one plug-in mating with the cross slot one (283); the end of the second screw rod (22) is connected with a group of cross slot two plug-in mating with the cross slot two (284); The first connecting block (25) comprises a first outer connecting block (253) and a first inner connecting block (254) which are detachably mounted, a first rotating groove for accommodating a first rotating ring (252) is formed on one side where the first outer connecting block (253) and the first inner connecting block (254) are butted against each other, and the pushing driving part (27) is fixedly mounted in the first outer connecting block (253), and the second connecting block (26) comprises a second outer connecting block (263) and a second inner connecting block (264) which are detachably mounted, a second rotating groove for accommodating a second rotating ring (262) is formed on two sides where the second outer connecting block (263) and the second inner connecting block (264) are butted against each other, and the demoulding driving part (28) is fixedly mounted in the second outer connecting block (263), and the first outer connecting block (253) and the second outer connecting block (263) are positioned and mounted on the core mold rotation driving end of the winding device; The core mold rotation driving end of the winding device comprises a base plate (8) and a side plate one (6) and a side plate two (7) which are slidably mounted on the base plate (8) and are distributed in parallel. The first external connecting block (253) and the second external connecting block (263) are mounted on the side plate one (6) and the side plate two (7) through seat bearings, and the bottoms of the side plate one (6) and the side plate two (7) are screwed and mounted on the outside of a group of screw rods (9). The two ends of the screw rods (9) are mounted on the base plate (8) and are driven to rotate by a screw motor to drive the side plate one (6) and the side plate two (7) to move toward or away from each other. A driving motor (10) for driving and connecting with the second external connecting block (263) is also installed on the side plate two (7).

2. The three-dimensional winding forming device for composite material pipe according to claim 1, characterized in that: A group of sealing push cylinders (11) are also provided in each core block (1). The driving end of the sealing push cylinder (11) is hingedly mounted on one end of a group of sealing plates (12). The other end of the sealing plate (12) is transfer-mounted on the end side of the core block (1). Driven by the sealing push cylinder (11), the sealing plate (12) rotates and seals in the separation gap between the two groups of core blocks (1), and is connected with the arc surface (3) of the core block (1) to form a core mold during fiber winding. The sealing plate (12) is also coated with a release agent.

3. A three-dimensional winding method for a composite material tube, based on a three-dimensional winding device for a composite material tube as claimed in claim 1, characterized in that: The steps include: S1: Install the first outer connecting block (253) and the second outer connecting block (263) on the side vertical plate 1 (6) and the side vertical plate 2 (7), start the screw motor, and drive the screw rod (9) to rotate, so that the first outer connecting block (253) is connected to the first inner connecting block (254), and the second outer connecting block (263) is connected to the second inner connecting block (264); S2: Start the push cylinder (271) to drive the first guide rod (23) to be inserted and positioned into the second screw rod (22), and then start the rotating motor (281) to drive the second screw rod (22) and the first screw rod (21) to rotate on the corresponding second cone block and the first cone block internal threads, and then drive the first cone block and the second cone block to move synchronously towards each other, so as to drive the core block (1) to move away from the axis core and radially to the winding working position, and apply a release agent on the arc surface (3) of the core block (1). After the winding process is completed, start the screw rod (9) to rotate again, so that the side plate 1 (6) and the side plate 2 (7) drive the first outer connecting block (253) and the second outer connecting block (263) to separate from the first inner connecting block (254) and the second inner connecting block (264), and then send the core mold combination with the first inner connecting block (254) and the second inner connecting block (264) into the curing furnace for curing; S3: After curing is completed, the core block (1) is taken out and the push cylinder (271) is started again to drive the first guide rod (23) to be inserted and positioned in the second screw rod (22), and then the rotary motor (281) is started again to drive the second screw rod (22) and the first screw rod (21) to rotate in the corresponding second cone block and the first cone block inner thread, so that the first cone block and the second cone block move synchronously in opposite directions to drive the core block (1) to move radially toward the axis core, so that the arc surface (3) of the core block (1) is separated from the inner wall of the composite material pipe part, and then the composite material pipe part is removed from one end after being separated, and the demoulding is completed.

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