A fiber round pipe winding device and a method of using the same

Abstract

The application discloses a fiber round pipe winding device and a use method thereof, and relates to the technical field of composite material winding. The device comprises a mandrel, a supporting mechanism, a driving and adjusting mechanism, two end covers, two fastening shaft sleeves and a plurality of pipe pieces. The supporting mechanism adopts a connecting mode in which a supporting ring and first and second supporting rods are hinged, so that all the pipe pieces are in a movement mode of rotating around the hinge points of the first and second supporting rods. When a mold is closed, the plurality of pipe pieces are combined into a round pipe core mold, so that two axial fastening components are respectively abutted against the two end covers, and the required overall core mold structural strength during winding is ensured, so that the overall core mold is not prone to deformation. When the mold is opened, the mandrel is driven to rotate through the fastening shaft sleeve, the moving ring is moved along the axial direction of the mandrel, and the pipe pieces are driven to rotate inward to complete the mold opening. The device and the use method ensure the strength requirement of the overall core mold to the tension during winding, are simple to operate, are convenient to open the mold, and improve the mold opening efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite material winding, in particular to a fiber round pipe winding device and a using method thereof. BACKGROUND

[0002] Fiber winding is an important forming process for pipe production. Compared with other forming processes, fiber winding is easy to realize mechanization and automation, has low labor intensity, stable product quality, low production cost and wide application.

[0003] In the preparation process of fiber winding round pipe, the fibers impregnated with resin formula material are wound on a tubular core mold under the action of a certain winding tension according to a certain rule, and then the product is formed after heating and curing. Under the influence of the round pipe core mold precision and the winding tension, the fiber winding round pipe product is often difficult to demold. At present, the fiber round pipe is demolded in two ways on the market. One is to use a pipe demolding machine to demold by extrusion, which often damages the product inside. The other is to demold by combining several pipe pieces. However, the existing devices are often complex in structure, have insufficient strength, are easy to deform, and are tedious to operate, which affects the work efficiency. SUMMARY

[0004] To solve the above technical problems, the present application provides a fiber round pipe winding device and a using method thereof, which is not easy to deform in the closed mold state, is simple to operate, is convenient to demold, and improves the demolding efficiency.

[0005] To achieve the above object, the present application provides the following solutions:

[0006] The application provides a fiber round pipe winding device, which comprises a mandrel, a supporting mechanism, a driving adjusting mechanism, two end covers, two fastening shaft sleeves and a plurality of pipe pieces, the two end covers are movably sleeved on the two ends of the mandrel, one fastening shaft sleeve is arranged on the outer side of each end cover and movably sleeved on the mandrel, a circumferential fastening part capable of abutting against the mandrel is arranged on the side of each fastening shaft sleeve, and an axial fastening part capable of abutting against the end cover is arranged on the outer end surface of each fastening shaft sleeve; the supporting mechanism and the driving adjusting mechanism are located between the two end covers, the supporting mechanism comprises a supporting ring and a plurality of supporting components, the supporting ring is movably sleeved on the mandrel, the supporting component comprises a first supporting rod and a second supporting rod, a plurality of first supporting rods are sequentially fixed on the outer wall of the supporting ring in the circumferential direction, one end of each second supporting rod is hinged to one first supporting rod, and the other end of each second supporting rod is fixed to the inner wall of one pipe piece; a threaded section is arranged on the mandrel, the driving adjusting mechanism comprises a moving ring and a plurality of driving components, the driving component comprises a driving rod, the moving ring is threadedly installed on the threaded section, a plurality of driving rods are sequentially hinged to the outer wall of the moving ring in the circumferential direction, one end of each driving rod away from the moving ring is hinged to the inner wall of one pipe piece, and each pipe piece is located between the two end covers.

[0007] Preferably, one end of each second supporting rod is hinged to one first supporting rod through a first pin shaft, and the axis direction of the first pin shaft is consistent with the axis direction of the mandrel.

[0008] Preferably, the hinge points of the first supporting rod and the second supporting rod are located on the line connecting the end point of the pipe piece and the center of the supporting ring in the mold closing state.

[0009] Preferably, the driving component further comprises a hinge support, a plurality of hinge supports are sequentially fixed on the outer wall of the moving ring in the circumferential direction, one end of each driving rod is hinged to one hinge support through a second pin shaft, and the axis direction of the second pin shaft is perpendicular to the axis direction of the mandrel.

[0010] Preferably, the driving component further comprises a connecting block arranged on the inner wall of the pipe piece, one end of each driving rod away from the moving ring is provided with a first semicircular ring, and one end of each connecting block away from the inner wall of the pipe piece is provided with a second semicircular ring connected with the first semicircular ring.

[0011] Preferably, the driving adjusting mechanism further comprises a limiting ring, the limiting ring is arranged on one side of the moving ring and movably sleeved on the threaded section, the outer diameter of the limiting ring is greater than the outer diameter of the moving ring, and one side of the driving rod is in contact with the limiting ring in the mold closing state.

[0012] Preferably, both sides of the pipe piece are inclined surfaces, and the included angle between the inclined directions of the two inclined surfaces and the radial direction of the mandrel is the same in the closed mold state.

[0013] Preferably, the outer diameter of the end cover is the same as the outer diameter of the circular pipe core mold formed after the plurality of pipe pieces are closed.

[0014] Preferably, the two ends of the annular side surface of the fastening sleeve are cut in the axial direction to form two parallel flat surfaces, the annular fastening component is an annular fastening screw, the annular fastening screw is threadedly installed on the arc side surface of the fastening sleeve, the axial fastening component is an axial fastening screw, and the axial fastening screw is threadedly installed on the outer end surface of the fastening sleeve.

[0015] The application also provides a use method of the fiber circular pipe winding device, including the following steps:

[0016] Step one, make the two annular fastening components abut against the mandrel, rotate the fastening sleeve to drive the mandrel to rotate clockwise under the premise of keeping the end cover stationary, make the moving ring move along the axial direction of the mandrel, drive the plurality of driving rods to support the plurality of pipe pieces, and complete the mold closing;

[0017] Step two, install the fiber circular pipe winding device on a winding equipment, make the two axial fastening components abut against the two end covers respectively, smear a release agent on the outer side of the pipe piece, and send the fiber circular pipe winding device into a curing furnace for curing after completing the winding process;

[0018] Step three, after curing, first make the end portions of the two axial fastening components move away from the two end covers, rotate the fastening sleeve and the mandrel counterclockwise under the premise of keeping the end cover stationary, make the moving ring move reversely, pull the pipe piece to rotate inward, and separate the pipe piece from the inner wall of the fiber circular pipe product;

[0019] Step four, make the end portion of one annular fastening component move away from the mandrel, sequentially take down one fastening sleeve and one end cover, and finally take down the fiber circular pipe product, and the demolding is completed.

[0020] The application has the following technical effects relative to the prior art:

[0021] The fiber round pipe winding device provided by the application comprises a mandrel, a supporting mechanism, a driving adjusting mechanism, two end covers, two fastening shaft sleeves and a plurality of pipe pieces, the supporting mechanism adopts a connecting mode in which a supporting ring and first and second supporting rods are hinged, so that all the pipe pieces are in a movement mode of rotating around the hinge points of the first and second supporting rods, when the mold is closed, the plurality of pipe pieces are combined into a round pipe core mold, so that two axial fastening parts are respectively abutted on the two end covers, thereby ensuring the overall core mold structural strength required during winding, so that the overall core mold is not easy to deform. When the mold is opened, the mandrel is driven to rotate through the fastening shaft sleeve, the moving ring is moved along the axial direction of the mandrel, and then the pipe pieces are rotated inward to complete the demolding. The device and the use method ensure the strength requirement of the overall core mold during winding, are simple to operate, are convenient to demold, and improve the demolding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0023] Figure 1 The external structure schematic diagram of the fiber round pipe winding device provided by the application when the mold is closed;

[0024] Figure 2 The internal structure schematic diagram of the fiber round pipe winding device provided by the application when the mold is closed;

[0025] Figure 3 The side view of the fiber round pipe winding device provided by the application when one end cover is removed after the mold is closed;

[0026] Figure 4 The connection schematic diagram of the first and second supporting rods of the fiber round pipe winding device provided by the application when the mold is closed;

[0027] Figure 5 The external structure schematic diagram of the fiber round pipe winding device provided by the application when the mold is opened;

[0028] Figure 6 The internal structure schematic diagram of the fiber round pipe winding device provided by the application when the mold is opened;

[0029] Figure 7 The side view of the fiber round pipe winding device provided by the application when one end cover is removed after the mold is opened;

[0030] Figure 8 The connection schematic diagram of the driving rod and the connecting block in the fiber round pipe winding device provided by the application.

[0031] Explanation of reference signs: 100, fiber round pipe winding device; 1, mandrel; 2, end cover; 3, fastening sleeve; 4, hoop fastening screw; 5, axial fastening screw; 6, pipe piece; 7, support ring; 8, first support rod; 9, second support rod; 10, threaded section; 11, moving ring; 12, hinged support; 13, driving rod; 14, connecting block; 15, first half-round ring; 16, second half-round ring; 17, limiting ring; 18, first pin shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] The present application aims to provide a fiber round pipe winding device and a use method thereof, which is not easy to deform in the mold closing state, is simple to operate, is convenient to demold, and improves the demolding efficiency.

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0035] As Figures 1-8As shown, this embodiment provides a fiber tube winding device 100, including a mandrel 1, a support mechanism, a drive adjustment mechanism, two end caps 2, two fastening bushings 3, and multiple tube segments 6. The two end caps 2 are movably sleeved on both ends of the mandrel 1. Each end cap 2 has a fastening bushing 3 movably sleeved on the mandrel 1 on its outer side. Each fastening bushing 3 has a circumferential fastening component on its side that can abut against the mandrel 1, and an axial fastening component on its outer end face that can abut against the end cap 2. The support mechanism and the drive adjustment mechanism are located between the two end caps 2. The support mechanism includes a support ring 7 and multiple support components. The support ring 7 is movably sleeved on the mandrel 1. The support components include first support rods 8 and second support rods 9. Multiple first support rods 8 are sequentially fixed circumferentially to the outer wall of the support ring 7. One end of each second support rod 9 is hinged to a first support rod 8. The other end of the second support rod 9 is fixed to the inner wall of a tube 6. The axis around which the second support rod 9 rotates is parallel to the axis of the mandrel 1, so that the tube 6 can rotate around the hinge point of the first support rod 8 and the second support rod 9. In this way, the tube 6 is not easily deformed as a whole, ensuring the strength requirements of the mandrel for fiber tension during winding. At the same time, this structure also improves the dimensional accuracy between the tubes 6 in the overall mold closing state. The mandrel 1 is provided with a threaded section 10. The drive adjustment mechanism includes a moving ring 11 and multiple drive components. The drive components include drive rods 13. The moving ring 11 is threaded on the threaded section 10. Multiple drive rods 13 are sequentially hinged to the outer wall of the moving ring 11 in the circumferential direction. The end of each drive rod 13 away from the moving ring 11 is hinged to the inner wall of a tube 6. Each tube 6 is located between two end caps 2. The axis around which the drive rod 13 rotates is perpendicular to the axis of the mandrel 1.

[0036] like Figure 3 As shown, one end of each second support rod 9 is hinged to a first support rod 8 via a first pin 18, and the axial direction of the first pin 18 is consistent with the axial direction of the spindle 1.

[0037] like Figure 4 As shown, the hinge point of the first support rod 8 and the second support rod 9 is located on the line connecting the end point of the tube 6 and the center of the support ring 7 in the mold closing state, which avoids interference between the tube 6 and the inner wall of the fiber tube fitting when the tube 6 rotates.

[0038] like Figure 2 and Figure 6 As shown, the drive assembly also includes a hinge support 12. Multiple hinge supports 12 are fixed circumferentially to the outer wall of the moving ring 11. One end of each drive rod 13 is hinged to a hinge support 12 through a second pin. The axial direction of the second pin is perpendicular to the axial direction of the spindle 1.

[0039] like Figure 8As shown, the driving assembly further comprises connecting blocks 14 arranged on the inner wall of the pipe pieces 6, and each driving rod 13 is provided with a first semicircular ring 15 at the end away from the moving ring 11, and each connecting block 14 is provided with a second semicircular ring 16 connected with the first semicircular ring 15 at the end away from the inner wall of the pipe piece 6. The first semicircular ring 15 and the second semicircular ring 16 are connected in such a way that the end of the driving rod 13 connected with the connecting block 14 can rotate freely, avoiding interference between the pipe piece 6 and the driving rod 13 during rotation due to angle change, and ensuring the smoothness of the rotation of the driving rod 13 when the moving ring 11 moves.

[0040] In the embodiment, the number of the first support rods 8, the second support rods 9, the driving rods 13, the connecting blocks 14 and the pipe pieces 6 is the same. In the embodiment, the number of the pipe pieces 6 is four, which reduces the number of the pipe pieces 6 as much as possible on the basis of ensuring the structural strength, and improves the processing workability of the overall device.

[0041] In the embodiment, the connecting end of the second support rod 9 and the pipe piece 6 is located on one side along the circumferential direction of the pipe piece 6, and the connecting block 14 is located on the other side along the circumferential direction of the pipe piece 6, that is, the connecting end of the second support rod 9 and the pipe piece 6 and the connecting block 14 are arranged in a staggered manner in the circumferential direction of the pipe piece 6.

[0042] As shown in Figure 2 , the driving adjusting mechanism further comprises a limiting ring 17 arranged on one side of the moving ring 11, and the limiting ring 17 is movably sleeved on the threaded section 10. The outer diameter of the limiting ring 17 is greater than the outer diameter of the moving ring 11. In the closed mold state, one side of the driving rod 13 is in close contact with the limiting ring 17, and the driving rod 13 is perpendicular to the mandrel 1, thereby better supporting the pressure of the fiber winding tension on the pipe piece 6, improving the structural strength of the overall core mold in the closed mold state, and ensuring the quality of the final product.

[0043] As shown in Figure 3 , both sides of the pipe piece 6 are inclined surfaces, and the included angle between the inclined directions of the two inclined surfaces and the radial direction of the mandrel 1 is the same in the closed mold state. This not only avoids interference between adjacent pipe pieces 6 during rotation, but also limits the rotation position of the pipe piece 6 during mold closing, ensuring the dimensional accuracy of the pipe piece 6 in the closed mold state.

[0044] As shown in Figure 1 , the outer diameter of the end cover 2 is the same as the outer diameter of the circular pipe core mold formed after the mold closing of the plurality of pipe pieces 6, thereby facilitating the observation of whether the position of the pipe piece 6 is in place in the closed mold state, and improving the dimensional accuracy of the overall core mold during mold closing.

[0045] The two ends of the annular side of the fastening sleeve 3 are cut along the axial direction to form two parallel flat surfaces, which facilitates the clamping and rotating operation of the tool. The annular fastening component is an annular fastening screw 4 which is threadedly installed on the arc side of the fastening sleeve 3, and the axial fastening component is an axial fastening screw 5 which is threadedly installed on the outer end surface of the fastening sleeve 3. The annular fastening screw 4 and the axial fastening screw 5 cooperate to achieve different operation requirements during mold splitting and mold closing winding, and have the advantages of simple structure, convenient operation and improved production efficiency.

[0046] As shown in Figure 2 and Figure 6 , the mandrel 1 in the embodiment is provided with two threaded segments 10, and the other parts of the mandrel 1 are smooth segments, and each threaded segment 10 is provided with a driving adjustment mechanism. Three supporting mechanisms are provided, one of which is arranged between the two driving adjustment mechanisms, and the other two are arranged close to the two end covers 2. The connection ends of the plurality of second supporting rods 9 and the pipe pieces 6 are arranged equidistantly along the axial direction, which ensures the uniform stress of the overall structure of the pipe pieces 6.

[0047] The embodiment also provides a use method of the fiber round pipe winding device 100, which comprises the following steps:

[0048] Step one, make the two annular fastening components abut against the mandrel 1, that is, twist the annular fastening screw 4 to abut against the mandrel 1, at this time, the fastening sleeve 3 and the mandrel 1 are in a locked and fixed state, under the premise of keeping the end cover 2 stationary, rotate the fastening sleeve 3 to drive the mandrel 1 to rotate clockwise, so that the moving ring 11 moves along the axial direction of the mandrel 1, and drive the plurality of driving rods 13 to support the plurality of pipe pieces 6, when the side of the driving rod 13 contacts the end surface of the limiting ring 17, the mold closing is completed, and at this time, the plurality of pipe pieces 6 are combined into a round pipe core mold;

[0049] Step two, install the fiber round pipe winding device 100 on the winding equipment, so that the two axial fastening components abut against the two end covers 2, that is, twist the axial fastening screws 5 to abut the end portions of the axial fastening screws 5 against the outer sides of the end covers 2 adjacent to the axial fastening screws 5, so that the inner sides of the two end covers 2 abut against the two sides of the round pipe core mold, at this time, the mandrel 1, the fastening sleeve 3, the round pipe core mold and the two end covers 2 are in a locked and fixed state, which guarantees the overall core mold structural strength required during winding; apply a mold release agent to the outer side of the pipe piece 6, and after completing the winding process, send it to a curing oven for curing;

[0050] Step three, after the solidification is completed, the two axial fastening components are first moved away from the two end covers 2, that is, the axial fastening screws 5 are loosened, so that the end of the axial fastening screw 5 is no longer tightly abutted against the outer side of the end cover 2 adjacent to it; the fastening sleeve 3 and the mandrel 1 are counterclockwise rotated under the premise that the end cover 2 is not moved, so that the moving ring 11 is reversely moved, the pipe piece 6 is pulled to rotate inward, and the pipe piece 6 is separated from the inner wall of the fiber circular pipe product;

[0051] Step four, the end of one ring fastening component is moved away from the mandrel 1, that is, the ring fastening screw 4 is loosened, so that it is no longer tightly abutted against the mandrel 1, one fastening sleeve 3 and one end cover 2 are sequentially removed, and finally the fiber circular pipe product is removed, that is, the demolding is completed.

[0052] In the embodiment, the support mechanism adopts the connection mode of the support ring 7 and the first support rod 8 and the second support rod 9 being hinged, so that all the pipe pieces 6 are moved in a mode of rotating around the hinge points of the first support rod 8 and the second support rod 9, and the selection of the positions of the hinge points avoids the problem of interference between the pipe pieces 6 and the inner wall of the fiber circular pipe product during the rotation of the pipe pieces 6. When the mold is closed, the plurality of pipe pieces 6 are combined into a circular pipe core mold, so that the two axial fastening components are tightly abutted against the two end covers 2, thereby ensuring the required overall core mold structural strength during winding, so that the overall core mold is not easily deformed. When the mold is opened, the mandrel 1 is rotated by the fastening sleeve 3, so that the moving ring 11 is moved along the axial direction of the mandrel 1, thereby driving the pipe piece 6 to rotate inward to complete the demolding. The device and the use method not only ensure the precision requirement between the pipe pieces 6 in the closed mold state, but also ensure the strength requirement of the overall core mold during the winding process, and at the same time, the operation is simple, the demolding is convenient, and the demolding efficiency is improved.

[0053] The principles and implementation modes of the present application are described by using specific examples in the specification, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation modes and application ranges will be changed. In conclusion, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A fiber tube winding device, characterized in that, The assembly includes a mandrel, a support mechanism, a drive adjustment mechanism, two end caps, two fastening bushings, and multiple tube segments. The two end caps are movably fitted onto both ends of the mandrel. Each end cap has a fastening bushing movably fitted onto the mandrel on its outer side. Each fastening bushing has a circumferential locking component on its side that can abut against the mandrel, and an axial locking component on its outer end face that can abut against the end cap. The support mechanism and the drive adjustment mechanism are located between the two end caps. The support mechanism includes a support ring and multiple support components. The support ring is movably fitted onto the mandrel, and the support components include… First support rods and second support rods, a plurality of first support rods are sequentially fixed circumferentially to the outer wall of the support ring, one end of each second support rod is hinged to a first support rod, and the other end of each second support rod is fixed to the inner wall of a segment; the mandrel is provided with a threaded section, the drive adjustment mechanism includes a moving ring and a plurality of drive components, the drive components include drive rods, the moving ring is threadedly mounted on the threaded section, a plurality of drive rods are sequentially hinged circumferentially to the outer wall of the moving ring, and the end of each drive rod away from the moving ring is hinged to the inner wall of a segment, and each segment is located between two end caps.

2. The fiber tube winding device according to claim 1, characterized in that, One end of each of the second support rods is hinged to one of the first support rods via a first pin, and the axial direction of the first pin is consistent with the axial direction of the spindle.

3. The fiber tube winding device according to claim 1, characterized in that, The hinge point between the first support rod and the second support rod is located on the line connecting the end point of the tube segment and the center of the support ring in the mold-closed state.

4. The fiber tube winding device according to claim 1, characterized in that, The drive assembly further includes hinge supports, and multiple hinge supports are sequentially fixed to the outer wall of the moving ring along the circumference. One end of each drive rod is hinged to a hinge support via a second pin, and the axial direction of the second pin is perpendicular to the axial direction of the spindle.

5. The fiber tube winding device according to claim 1, characterized in that, The driving assembly further includes a connecting block disposed on the inner wall of the tube segment. Each driving rod has a first semicircular ring at the end away from the moving ring, and each connecting block has a second semicircular ring connected to the first semicircular ring at the end away from the inner wall of the tube segment.

6. The fiber tube winding device according to claim 1, characterized in that, The drive adjustment mechanism also includes a limiting ring, which is disposed on one side of the moving ring and is movably sleeved on the threaded section. The outer diameter of the limiting ring is larger than the outer diameter of the moving ring. In the mold closing state, one side of the drive rod is in contact with the limiting ring.

7. The fiber tube winding device according to claim 1, characterized in that, Both sides of the tube are inclined surfaces, and in the mold-closed state, the angle between the inclination direction of the two inclined surfaces and the radial direction of the mandrel is the same.

8. The fiber tube winding device according to claim 1, characterized in that, The outer diameter of the end cap is the same as the outer diameter of the circular core mold formed after the multiple tube segments are molded together.

9. The fiber tube winding device according to claim 1, characterized in that, The two ends of the annular side of the fastening bushing are cut axially to form two parallel straight surfaces. The circumferential fastening component is a circumferential set screw, which is threaded onto the arcuate side of the fastening bushing. The axial fastening component is an axial set screw, which is threaded onto the outer end face of the fastening bushing.

10. A method of using the fiber tube winding device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Make both of the circumferential locking components press against the mandrel. While keeping the end cap stationary, rotate the fastening bushing to drive the mandrel to rotate clockwise, so that the moving ring moves along the axial direction of the mandrel, driving multiple drive rods to support multiple tube segments, thus completing the mold closing. Step 2: Install the fiber tube winding device onto the winding equipment, so that the two axial locking components are respectively pressed against the two end caps, apply release agent to the outside of the tube sheet, and send it into the curing oven for curing after the winding process is completed. Step 3: After curing, remove the tube and first move the ends of the two axial fastening components away from the two end caps. While keeping the end caps stationary, rotate the fastening bushing and the mandrel counterclockwise to move the moving ring in the opposite direction, pulling the tube sheet inward to separate the tube sheet from the inner wall of the fiber round tube fitting. Step 4: Move one end of the circumferential locking component away from the mandrel, remove one of the fastening bushings and one of the end caps in sequence, and finally remove the fiber round tube component to complete the demolding.

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