Forming device and forming method for fiber composite material thin-wall coil group

Abstract

The invention provides a fiber composite material thin-wall coil set forming device and method, and belongs to the field of fiber composite material design and manufacturing. The problem that an existing fiber composite coil is low in manufacturing quality and manufacturing efficiency is solved. A main shaft of the forming device is a stepped shaft, a plurality of forming units are installed on the periphery of a shaft body of the main shaft and are positioned through a left positioning block and a right positioning block, a left shaping plate and a right shaping plate of each forming unit are fixed through a fixing device, and a coil is wound between the left shaping plate and the right shaping plate. The coil directly forms a standard sample in the sample preparation interval formed by the left and right shaping plates, so that secondary processing of the coil is avoided, and the accuracy of coil performance characterization and the efficiency of test piece manufacturing are improved. The forming device is easy to install and convenient to disassemble, the forming method is convenient to implement and high in accuracy, the coil quality is improved, the production time, the equipment occupation time and the labor cost are saved, and the production efficiency is high.

Description

Technical Field

[0001] The present invention belongs to the field of design and manufacture of fiber composite materials, and particularly relates to a forming device and a forming method for a thin-walled coil assembly of fiber composite materials. Background Art

[0002] In recent years, fiber composite materials have been gradually widely used in the fields of chemical storage tanks, pipelines, shaft tubes, etc. due to their excellent characteristics of light weight and high strength. Different from metal materials, fiber composite materials are anisotropic materials, and the fiber laying method, direction, forming process, processing method, etc. have a great influence on the performance of products. Products such as storage tanks, pipelines, and shaft tubes are manufactured by continuous fiber winding forming process. During use, due to the influence of working media and environmental temperature, there is a certain degree of reciprocating expansion and contraction deformation. In order to ensure the use safety of products, it is often necessary to fix the products in a circumferential hoop manner.

[0003] Traditional metal material hoops are isotropic materials, with poor deformation synergy with anisotropic composite materials. Moreover, under temperature changes, their thermal expansion coefficients do not match those of composite materials at all. When the working media and environment of products change stably, damage to the hoops or product damage often occurs due to the non-synergy between metal hoops and composite material products. In order to ensure the wide application of lightweight and high-strength composite material products and improve their use safety, this has put forward the need for thin-walled fiber composite material hoops of different sizes.

[0004] Currently, for composite material products formed by fiber winding, when making composite material hoops, only one hoop can be formed at a time, with low efficiency, and often secondary processing is required, which poses a risk of damaging fibers and affecting the overall performance of the hoop. In order to adapt to the wide use of fiber composite material winding products in different fields and the requirements of mass production of products, this has further put forward requirements for the production quality and production efficiency of fiber composite material hoops. Summary of the Invention

[0005] In view of this, in order to solve the problems of low production quality and production efficiency of the thin-walled coil of fiber composite materials mentioned in the above background art, the present invention proposes a forming device and a forming method for a thin-walled coil assembly of fiber composite materials.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A forming device for a thin-walled coil assembly of fiber composite materials includes a main shaft, a left positioning block, a right positioning block, and a plurality of forming units. The main shaft is a stepped shaft, with a larger diameter of the middle shaft body, and the same diameter of the shaft bodies at both ends and smaller than the diameter of the middle shaft body. The plurality of forming units are installed on the outer periphery of the shaft of the main shaft and are positioned by the left positioning block and the right positioning block.

[0007] The forming unit includes a left sizing plate, a right sizing plate and a fixing device. The left sizing plate and the right sizing plate are fixed by the fixing device, and a coil is wound in the middle.

[0008] Furthermore, the main shaft includes a left thread, a keyway, a connecting threaded hole, a middle shaft body, two end shaft bodies and a right thread. The two end shaft bodies are located on both sides of the middle shaft body, and the left thread and the right thread are symmetrically arranged on the sides close to the middle shaft body. The middle shaft body is longitudinally provided with a keyway, and a number of connecting threaded holes are arranged in the keyway.

[0009] Furthermore, the left positioning block includes two concentric rings and a ring connecting part integrally formed. Its interior is provided with a thread, which cooperates with the left thread. The diameters of the two concentric rings are different, and the ring with the smaller diameter contacts a number of forming units. The ring with the smaller diameter is provided with a fixing surface and a stop surface. A number of force - adding holes are arranged on the wall of the ring with the larger diameter. The left positioning block has the same structure as the right positioning block.

[0010] Furthermore, the left sizing plate is a ring body. A keyway of the left sizing plate is arranged on the inner wall of the ring body. A boss of the left sizing plate is arranged on the outer periphery of the back of the inner wall. A number of threaded holes of the left sizing plate are circumferentially and evenly arranged on the ring body. A sizing platform is arranged on the outer periphery of the front of the ring body. The outer diameter of the sizing platform is the inner diameter of the coil, and the coil is wound around the outer periphery of the sizing platform.

[0011] Furthermore, the right sizing plate is a ring body of the same size as the left sizing plate. A boss of the right sizing plate is arranged on the outer periphery of the back of the inner wall of the right sizing plate. A number of connecting holes of the right sizing plate are circumferentially and evenly arranged on the ring body.

[0012] Furthermore, the front of the right sizing plate faces the front of the left sizing plate. The fixing device is a bolt. The bolt sequentially passes through the connecting holes of the right sizing plate and is screwed into the connecting threaded holes of the left sizing plate to fix the left sizing plate and the right sizing plate.

[0013] Furthermore, a number of keys are installed in the keyway, and each forming unit cooperates with a key to prevent the forming unit from moving.

[0014] Furthermore, the key is a flat key, with a connecting hole in the middle, and the position corresponds to the connecting threaded hole of the middle shaft body, and is fixed in the keyway by a bolt.

[0015] Furthermore, the keyways of the left sizing plate and the right sizing plate cooperate with the keys.

[0016] A forming method using the above - mentioned forming device for a thin - walled coil made of fiber composite material specifically includes the following steps:

[0017] Step 1: Clean the main shaft, the left positioning block, the right positioning block, the keys, the left sizing plate, the right sizing plate and the bolts, and apply a layer of release agent.

[0018] Step 2: Assemble the thread of the left positioning block to the left thread of the main shaft, and screw it until the stop surface contacts the left end of the middle shaft body, then tighten it.

[0019] Step 3: Pass a screw through the connection hole of the key and screw it into the connection threaded hole, then tighten it.

[0020] Step 4: Put the left shaping plate on the middle shaft body with the back facing the left positioning block, and assemble the keyway of the left shaping plate to the key.

[0021] Step 5: Put the right shaping plate on the middle shaft body with the front of the right shaping plate facing the front of the left shaping plate, assemble the keyway of the right shaping plate to the key, and make the front of the right shaping plate contact the shaping table. Then, sequentially pass bolts through the connection holes of the right shaping plate and screw them into the connection threaded holes of the left shaping plate, and tighten them.

[0022] Step 6: Repeat Steps 3 - 5 to sequentially assemble all shaping units onto the middle shaft body.

[0023] Step 7: Assemble the thread of the right positioning block to the right thread of the main shaft, make the fixing surface contact the boss of the end right shaping plate, and tighten it.

[0024] Step 8: Sequentially wind the coil specimen within the interval formed by the left shaping plate, the shaping table, and the right shaping plate until it reaches the standard thickness, and then rotate for curing.

[0025] Step 9: Unscrew the right positioning block, sequentially remove each group of shaping units, unscrew the bolts, and demold the coil to remove it, thus completing the production of multiple coil specimens.

[0026] Compared with the prior art, the beneficial effects of the fiber composite thin - wall coil forming device and forming method of the present invention are as follows:

[0027] 1. The fiber composite thin - wall coil forming device of the present invention forms a forming unit through the left and right shaping plates and the connection structure (bolts). Each forming unit can form one coil, and multiple forming units can form multiple coils simultaneously. Moreover, the coil directly forms a standard specimen within the sample - making interval formed by the left and right shaping plates, avoiding the secondary processing of the coil, improving the accuracy of coil performance characterization, and the efficiency of specimen production.

[0028] 2. The present invention is composed of multiple groups of shaping plates of the same specification in series combination, with strong replaceability, and can form different numbers of products according to actual needs. Each group of shaping plates and the main shaft are fixedly assembled through a split - type key, preventing the shaping plate from rotating relative to the main shaft circumferentially during the winding and forming process. At the same time, the split - type keys are assembled in the keyway in a combined manner, which is simple, flexible, and has strong maintainability, avoiding the assembly difficulty of the integral key and the overall replacement cost when it is deformed and damaged.

[0029] 3. The forming device described in the present invention is simple to install and convenient to disassemble. The forming method is easy to implement and highly accurate, improving the quality of the coil, saving production time, equipment occupancy time, and labor costs, and having high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0031] Figure 1 is a perspective view of a forming device for a fiber composite thin-walled coil described in the present invention;

[0032] Figure 2 is a perspective view of the main shaft of a forming device for a fiber composite thin-walled coil described in the present invention;

[0033] Figure 3 is a perspective view of the positioning block of a forming device for a fiber composite thin-walled coil described in the present invention Figure 1 ;

[0034] Figure 4 is a perspective view of the positioning block of a forming device for a fiber composite thin-walled coil described in the present invention Figure 2 ;

[0035] Figure 5 is a perspective view of the key of a forming device for a fiber composite thin-walled coil described in the present invention;

[0036] Figure 6 is a front perspective view of the left shaping plate of a forming device for a fiber composite thin-walled coil described in the present invention;

[0037] Figure 7 is a back perspective view of the left shaping plate of a forming device for a fiber composite thin-walled coil described in the present invention;

[0038] Figure 8 is a front perspective view of the right shaping plate of a forming device for a fiber composite thin-walled coil described in the present invention;

[0039] Figure 9 is a back perspective view of the right shaping plate of a forming device for a fiber composite thin-walled coil described in the present invention;

[0040] Figure 10 is a perspective view of the coil of a forming device for a fiber composite thin-walled coil described in the present invention;

[0041] Among them, 1 - main shaft, 2 - left positioning block, 3 - left shaping plate, 4 - coil, 5 - right shaping plate, 6 - bolt, 7 - right positioning block, 8 - left thread, 9 - keyway, 10 - key, 11 - connecting threaded hole, 12 - connecting hole, 13 - right thread, 14 - middle shaft body, 15 - shaping table, 16 - left shaping plate connecting threaded hole, 17 - left shaping plate boss, 18 - left shaping plate keyway, 19 - right shaping plate keyway, 20 - right shaping plate connecting hole, 21 - right shaping plate boss, 22 - thread, 23 - force - adding hole, 24 - fixing surface, 25 - stopping surface. Detailed implementation mode

[0042] 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. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0043] See Figures 1-10 To illustrate this embodiment, a forming device for a thin - wall coil of a fiber composite material includes a main shaft 1, a left positioning block 2, a right positioning block 7 and a plurality of forming units. The main shaft 1 is a stepped shaft, with the middle shaft body 14 having a larger diameter, and the diameters of the two end shaft bodies being the same and smaller than the diameter of the middle shaft body 14. The plurality of forming units are installed on the outer periphery of the shaft body 14 of the main shaft 1 and are positioned by the left positioning block 2 and the right positioning block 7.

[0044] The forming unit includes a left shaping plate 3, a right shaping plate 5 and a fixing device. The left shaping plate 3 and the right shaping plate 5 are fixed by the fixing device, and a coil 4 is wound in the middle. The thickness of the thin - wall coil 4 is ≤5 mm.

[0045] The main shaft 1 includes a left thread 8, a keyway 9, a connecting threaded hole 11, a middle shaft body 14, two end shaft bodies and a right thread 13. The two end shaft bodies are located on both sides of the middle shaft body 14, and the left thread 8 and the right thread 13 are symmetrically arranged on the side close to the middle shaft body 14. The middle shaft body 14 is longitudinally provided with a keyway 9, and a plurality of connecting threaded holes 11 are arranged in the keyway 9.

[0046] The left positioning block 2 includes two concentric rings and a ring connecting part integrally formed. Its interior is provided with a thread 22, which cooperates with the left thread 8. The diameters of the two concentric rings are different, and the ring with a smaller diameter contacts a plurality of forming units. The ring with a smaller diameter is provided with a fixing surface 24 and a stopping surface 25, and a plurality of force - adding holes 23 are arranged on the wall of the ring with a larger diameter. The left positioning block 2 has the same structure as the right positioning block 7.

[0047] The stop surface 25 of the left positioning block 2 contacts the left end face of the middle shaft body 14. The left end face of the middle shaft body 14 protrudes from the forming unit. Then, the fixing surface 24 of the left positioning block 2 wraps the left shaping plate boss 17 of the left end forming unit to fix the forming unit. The fixing surface 24 of the right positioning block 7 wraps the right shaping plate boss 21 of the right end forming unit to fix the forming unit. At this time, the stop surface 25 of the right positioning block 7 may not contact the right end face of the middle shaft body 14, and the clamping of multiple shaping units is the criterion. Generally, 3 force application holes 23 are evenly arranged circumferentially. By rotating the lever in the force application holes 23, the movement positioning of the positioning block is achieved.

[0048] The left shaping plate 3 is a ring body. There is a left shaping plate keyway 18 on the inner wall of the ring body. The left shaping plate boss 17 is arranged on the outer periphery of the back of the inner wall. The left shaping plate threaded holes 16 are evenly arranged circumferentially on the ring body. The shaping table 15 is arranged on the outer periphery of the front of the ring body, and the diameter of the shaping table 15 is the coil diameter.

[0049] The right shaping plate 5 is a ring body of the same size as the left shaping plate 3. The right shaping plate boss 21 is arranged on the outer periphery of the back of the inner wall of the right shaping plate 5. The right shaping plate connection holes 20 are evenly arranged circumferentially on the ring body.

[0050] The front of the right shaping plate 5 faces the front of the left shaping plate 3. The fixing device is a bolt 6. The bolt 6 sequentially passes through the right shaping plate connection holes 20 and is screwed into the left shaping plate connection threaded holes 16 to fix the left shaping plate 3 and the right shaping plate 5.

[0051] A number of keys 10 are installed in the keyway 9. Each forming unit cooperates with one key 10. The shaping plate keyways of the left shaping plate 3 and the right shaping plate 5 cooperate with the keys 10 to prevent the forming unit from moving.

[0052] The key 10 is a flat key. There is a connection hole 12 in the middle, and the position corresponds to the connection threaded hole 11 of the middle shaft body 14. It is fixed in the keyway 9 by bolts.

[0053] The forming method using the above fiber composite thin-walled coil forming device specifically includes the following steps:

[0054] Step 1: Clean the main shaft 1, left positioning block 2, right positioning block 7, key 10, left shaping plate 3, right shaping plate 5 and bolt 6, and apply a layer of release agent.

[0055] Step 2: Assemble the thread 22 of the left positioning block 2 to the left thread 8 of the main shaft 1 and screw it until the stop surface 25 contacts the left end of the middle shaft body 14, and then tighten it.

[0056] Step 3: Pass the screw through the connection hole 12 of the key 10 and screw it into the connection threaded hole 11, and then tighten it.

[0057] Step 4: Thread the left shaping plate 3 onto the middle shaft body 14 with its back facing the left positioning block 2, and fit the left shaping plate keyway 18 onto the key 10;

[0058] Step 5: Thread the right shaping plate 5 onto the middle shaft body 14 with the front of the right shaping plate 5 facing the front of the left shaping plate 3, fit the right shaping plate keyway 19 onto the key 10, and have the front of the right shaping plate 5 contact the shaping table 15. Then, sequentially pass the bolts 6 through the right shaping plate connection holes 20 and screw them into the left shaping plate connection threaded holes 16 and tighten;

[0059] Step 6: Repeat Steps 3 - 5 to sequentially assemble all the shaping units onto the middle shaft body 14;

[0060] Step 7: Thread the thread 22 of the right positioning block 7 onto the right thread 13 of the main shaft 1, and have the fixing surface 24 contact the end right shaping plate boss 21 and tighten;

[0061] Step 8: Sequentially wind the coil specimen within the interval formed by the left shaping plate 3, the shaping table 15, and the right shaping plate 5 until it reaches the standard thickness, and then rotate for curing;

[0062] Step 9: Unscrew the right positioning block 7, sequentially remove each group of shaping units, unscrew the bolts 6, and demold and remove the coil 4 to complete the production of multiple coil specimens.

[0063] The embodiments of the present invention disclosed above are only used to assist in explaining the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can well understand and utilize the present invention.

Claims

1. A forming device for a thin-walled coil made of a fiber composite material, characterized in that: It includes a main shaft (1), a left positioning block (2), a right positioning block (7) and several forming units. The main shaft (1) is a stepped shaft, with the middle shaft body (14) having a larger diameter, and the diameters of the two end shaft bodies being the same and smaller than that of the middle shaft body (14). The several forming units are installed on the outer periphery of the middle shaft body (14) and are positioned by the left positioning block (2) and the right positioning block (7). The forming unit includes a left shaping plate (3), a right shaping plate (5) and a fixing device. The left shaping plate (3) and the right shaping plate (5) are fixed by the fixing device, and a coil (4) is wound in the middle.

2. The fiber composite thin-walled coil forming device according to claim 1, characterized in that: The main shaft (1) includes a left thread (8), a keyway (9), a connecting threaded hole (11), a middle shaft body (14), two end shaft bodies and a right thread (13). The two end shaft bodies are located on both sides of the middle shaft body (14), and the left thread (8) and the right thread (13) are symmetrically arranged on the sides close to the middle shaft body (14). The middle shaft body (14) is longitudinally provided with a keyway (9), and several connecting threaded holes (11) are arranged in the keyway (9).

3. The fiber composite thin-walled coil forming device according to claim 2, characterized in that: The left positioning block (2) includes two concentric rings formed integrally and a ring connecting part, and its interior is provided with a thread (22) for cooperation with the left thread (8). The two concentric rings have different diameters, and the ring with a smaller diameter contacts the several forming units. A fixing surface (24) and a stop surface (25) are provided on the ring with a smaller diameter, and several force - applying holes (23) are provided on the wall of the ring with a larger diameter. The left positioning block (2) has the same structure as the right positioning block (7).

4. The fiber composite thin-walled coil forming device according to claim 2, characterized in that: The left shaping plate (3) is a ring body. An inner wall of the ring body is provided with a left shaping plate keyway (18), an outer periphery of the back of the inner wall is provided with a left shaping plate boss (17), left shaping plate threaded holes (16) are circumferentially and evenly arranged on the ring body, and a shaping platform (15) is provided on the outer periphery of the front of the ring body. The coil (4) is wound around the outer periphery of the shaping platform (15).

5. The fiber composite thin-walled coil forming device according to claim 4, characterized in that: The right shaping plate (5) is a ring body of the same size as the left shaping plate (3). An inner wall of the ring body is provided with a right shaping plate keyway (19), an outer periphery of the back of the inner wall is provided with a right shaping plate boss (21), and right shaping plate connecting holes (20) are circumferentially and evenly arranged on the ring body.

6. The fiber composite thin-walled coil forming device according to claim 5, characterized in that: The front of the right shaping plate (5) faces the front of the left shaping plate (3). The fixing device is a bolt (6). The bolt (6) sequentially passes through the right shaping plate connecting holes (20) and is screwed into the left shaping plate connecting threaded holes (16) to fix the left shaping plate (3) and the right shaping plate (5).

7. The fiber composite thin-walled coil forming device according to claim 4, wherein: Several keys (10) are installed in the keyway (9), and each forming unit cooperates with one key (10) to prevent the forming unit from moving around.

8. The fiber composite thin-walled coil forming device according to claim 5, characterized in that: The key (10) is a flat key, with a connecting hole (12) in the middle, and its position corresponds to the connecting threaded hole (11) of the middle shaft body (14). The key (10) is fixed in the keyway (9) by bolts.

9. The fiber composite thin-walled coil forming device according to claim 6, characterized in that: The shaping plate keyways of the left shaping plate (3) and the right shaping plate (5) cooperate with the key (10).

10. A forming method using the forming device of the thin-walled coil composed of the fiber composite material according to claim 9, characterized in that: Specifically, it includes the following steps: Step 1: Clean the main shaft (1), the left positioning block (2), the right positioning block (7), the key (10), the left shaping plate (3), the right shaping plate (5) and the bolt (6), and apply a layer of release agent. Step 2: Assemble the thread (22) of the left positioning block (2) to the left thread (8) of the main shaft (1), and screw it until the stop surface (25) contacts the left end of the middle shaft body (14), then tighten it; Step 3: Pass a screw through the connection hole (12) of the key (10) and screw it into the connection threaded hole (11), then tighten it; Step 4: Put the left shaping plate (3) on the middle shaft body (14) with the back facing the left positioning block (2), and assemble the left shaping plate keyway (18) to the key (10); Step 5: Put the right shaping plate (5) on the middle shaft body (14) with the front of the right shaping plate (5) facing the front of the left shaping plate (3), assemble the right shaping plate keyway (19) to the key (10), and the front of the right shaping plate (5) contacts the shaping table (15). Then, pass the bolts (6) through the right shaping plate connection holes (20) in sequence and screw them into the left shaping plate connection threaded holes (16), and tighten them; Step 6: Repeat Steps 3 - 5 to assemble all the shaping units to the middle shaft body (14) in sequence; Step 7: Assemble the thread (22) of the right positioning block (7) to the right thread (13) of the main shaft (1), and make the fixing surface (24) contact the end right shaping plate boss (21), then tighten it; Step 8: Wind the coil sample in the interval formed by the left shaping plate (3), the shaping table (15) and the right shaping plate (5) in sequence, wind it to the standard thickness, and rotate for curing; Step 9: Unscrew the right positioning block (7), remove each group of shaping units in sequence, unscrew the bolts (6), and demold and remove the coil (4) to complete the production of multiple coil samples.

Images