JPH0331332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laminated pipe manufacturing apparatus for laminating and integrating dissimilar inner layer pipes and outer layer pipes. The present invention relates to a laminated tube manufacturing apparatus that winds liquid-impregnated glass fiber to form an outer layer tube to obtain a laminated tube.

Prior Art As shown in FIG. 8, a conventional laminated tube manufacturing apparatus has an inner layer tube 93 fitted around a rotating shaft 92 supported by a pair of bearings 90 and 91.
a fixed holder 94 integrated with the rotating shaft 92;
A movable holder 96 movable by a fastener 95 is used to form a concentrically integral body with the rotating shaft 92, and in this state, while rotating the rotating shaft 92 and the inner layer tube 93 together, the outer peripheral surface of the inner layer tube 93 is fixed. An outer layer tube 97 was formed by winding glass fiber impregnated with a resin liquid thereon, thereby obtaining a laminated tube 98. To take out (extract) the formed laminated tube 98, as shown in FIG. By performing the operations reverse to those described above, including fitting a new inner layer tube 93 onto the outside, the next outer layer tube 97 can be laminated, that is, a laminated tube 98 can be formed.

Problems to be Solved by the Invention According to the above-mentioned conventional structure, the work of taking out the laminated pipe 98 and the work of setting a new inner layer pipe 93 is carried out by the bearing 9.
Removing and setting 1 is a troublesome task, which is not only difficult to perform, but also time consuming and inefficient.

Means for Solving the Problems In order to solve the above problems, the laminated pipe manufacturing apparatus of the present invention forms an outer layer tube by winding resin liquid-impregnated glass fibers on the outer peripheral surface of the inner layer tube while rotating the inner layer tube. A laminated tube manufacturing apparatus for producing laminated tubes is provided with a pair of holders that are rotatable on the same axis and can move toward and away from each other, and on opposite sides of these holders, a plurality of inner layer tubes are attached. The holders are formed in a stepwise manner, a rotational drive device is provided that interlocks with at least one of the holders, and a central shaft that can be freely inserted and removed between both holders on the axis center and has an expansion and contraction body in the middle; It is equipped with an insertion/extraction actuation device that is linked to the center shaft.

According to this configuration, by bringing the pair of holders close to each other, inner tubes of various diameters can be held via the stepped inner tube holder, and by separating the holders, Molded laminated pipes can be removed. At this time, by inserting the center shaft and inflating the expansion and contraction body, the middle part of the laminated tube can be held on the center axis side through this expansion and contraction body, thereby preventing deflection (bending) of the inner layer tube. It is possible.

Embodiment An embodiment of the present invention will be described below based on FIGS. 1 to 9. In FIG. 1, reference numeral 1 denotes a glass fiber stock section, from which glass fibers 2 pass through a resin liquid impregnating device 3 to become resin liquid impregnated glass fibers 4, which are then supplied to a laminated tube manufacturing device 5. Inside this laminated tube manufacturing apparatus 5, an inner layer tube supply section 6 and a laminated tube take-out section 7 are arranged in an upper and lower division on the opposite side to the resin liquid impregnating apparatus 3 side, and the inner layer tube supply section A delivery device 10 is provided for transferring the inner layer tube 8 or the laminated tube 9 between the laminated tube manufacturing device 5 or the laminated tube take-out section 7 and the laminated tube manufacturing device 5.

Next, details of the resin liquid impregnating device 3 will be explained based on FIGS. 5 to 7. 2 is a long glass fiber,
It is wound in a roll shape around the core material 11 in advance. Note that it may be wound into a bobbin shape. Reference numeral 12 denotes a resin liquid tank with an open top, into which room-temperature curable resin liquid 14 is heated to about 30° C. and supplied from a resin liquid supply device 13 . The resin liquid supply device 13 includes a resin liquid storage section 15, a resin liquid supply pipe 17 communicating with the resin liquid storage section 15 and having a resin liquid pump 16 interposed therebetween, a catalyst storage section 18, and this catalyst storage section. Part 18
It consists of a catalyst supply pipe 20 that communicates with the catalyst pump 19 and a mixing valve 21 that communicates with both the supply pipes 17 and 20. 14
It is configured to automatically supply 4 (replenish) a predetermined amount of resin liquid 14 when the amount of resin liquid 14 falls below a certain level. An on-off valve 2 is provided at the bottom of the resin liquid tank 12.
A drain discharge pipe 24 having a diameter of 3 is connected thereto. 2
5 is a large number of glass fiber guide tubes 27 in a cooling box 26.
The receiving port 28 is connected to the lower part of the resin liquid tank 12, and the entire body is curved in a J-shape, and the outlet port 29 is connected to the lower part of the resin liquid tank 12. It is set higher than the set liquid level. Here, the receiving port 28 is
It communicates with the lower part of the resin liquid tank 12 at an angle of 45 degrees. Furthermore, a ring-shaped ceramic 30 is attached to the starting end of each glass fiber guide tube 27 at least in the receiving port 28 of the receiving port 28 and the extracting port 29. The number of the glass fiber guiding tubes 27 is about 60, and the average guiding length L of the curved guiding device 25 is 100 mm to 500 mm. A cooling medium supply pipe 31 is connected to the upper end of the cooling box 26, and
A cooling medium discharge pipe 32 is connected to the lower end, and the flowing cooling medium lowers the temperature of the resin liquid 14 in the glass fiber guide pipe 27 to about 5°C. A resin liquid receiving tank 33 is provided outside the outlet 29, and the resin liquid receiving tank 33 and the resin liquid tank 12 are communicated with each other through a resin liquid return path 34 to allow the resin liquid 14 to flow naturally. It is configured to be returned to the resin liquid tank 12. A resin liquid draining device 35 is provided above the resin liquid receiving tank 33. This resin draining device 35 consists of a lower liquid draining plate 36 and an upper liquid draining plate 37, and the amount of resin liquid 14 impregnated can be controlled by adjusting the distance l between the plates 36 and 37 and the lap height h. can be determined. Reference numeral 8 denotes the inner layer tube held by the laminated tube manufacturing apparatus 5, and a drip receiver 38 provided below the inner layer tube 8 communicates with the resin liquid receiver tank 33 via a return path 39. The resin liquid receiving tank 3 is connected from the resin liquid tank 12 via the glass fiber guide pipe 27.
A glass fiber moving path is formed that reaches above the pipe 3 and reaches the laminated tube manufacturing device 5 through the resin liquid draining device 35. Removal port 29 and resin liquid draining device 3
5, an acetone gun 40 facing downward is disposed above the moving path, and this acetone gun 4
The resin liquid 14 is washed with acetone 41 from 0. 42 indicates a guide roller.

According to the resin liquid impregnating device 3 having the above configuration, a large number of glass fibers 2 are unwound from the core material 11 by the rotational winding force on the inner layer tube 8 side, and then passed through the guide roller 42 to the resin liquid tank 1. into the resin liquid 14. The glass fibers 2 are impregnated with the resin liquid 14 while moving in the glass fiber guide tube 27 together with the resin liquid 14, and are taken out as resin liquid-impregnated glass fibers 4 from the outlet 29. Then, while moving through the resin liquid draining device 35, excess resin liquid 14 is removed, resulting in the desired amount of impregnated resin. Thereafter, it is wound around the outer circumference of the inner layer tube 8. During such a co-dipping operation, the resin liquid 14 moves through the glass fiber guide tube 27 together with the glass fibers 2, so the glass fibers will move under conditions where the amount of resin liquid stored in the resin liquid tank 12 is small and the resistance is low. Although the inner diameter and length of the guide tube 27 are determined, sufficient impregnation can be achieved. Further, the resin liquid 14 in the drip pan 38 is automatically returned to the resin liquid receiving tank 33, and the resin liquid 14 in the resin liquid receiving tank 33 is automatically returned to the resin liquid tank 12. In other words, the resin liquid 14 in the drip pan 38 is automatically returned to the resin liquid tank 12, so that they can be circulated and automatically stirred. As mentioned above, sufficient impregnation can be achieved, which also makes it possible to reduce the amount of resin used. Due to these factors, from the perspective of tank life issues, room temperature curing resin liquid 14
The resin liquid 14 can be easily adopted and is curable at room temperature.
By adopting this, the resin liquid 14 can be cured at room temperature after being wound and laminated around the inner layer tube 8, and the laminated tube 9 can be laminated with the glass fiber reinforced outer layer tube 43 without employing a heat curing process. You can get . Note that as the work progresses, the resin liquid 14 gradually runs out, but this is replenished via the mixing valve 21 in response to instructions from the liquid level sensor 22.

For example, at the end of a day's work, acetone 41 is supplied from an acetone gun 40 and cleaned while being circulated in the same manner as the resin liquid 14, in preparation for the next work.

Next, details of the laminated pipe manufacturing apparatus 5 will be explained based on FIG. 2. A pair of carts 44A and 44B are placed on rails 46A and 46B via wheels 45A and 45B, and are configured to be able to move toward and away from each other via a traveling drive device 47. Travel drive device 4
7 consists of a motor 48 that can be driven in forward and reverse directions, and a pair of left and right screw shafts 50A and 50B that can move forward and backward in conjunction with the motor 48 through a gear mechanism 49,
These screw shafts 50A, 50B are connected to the truck 44A,
It is linked to 44B. Said trolleys 44A, 44B
cone-shaped holders 51A,
51B are arranged, and these holders 51A, 51B
are rotatably disposed through bearings 52A and 52B, respectively, around the same axis 53 along the traveling direction of the bogie. A plurality of inner layer tube holders 54A, 54 are provided on opposite sides of the holders 51A, 51B, respectively.
B is formed in a step-like shape. One of the carts 44A is provided with a rotational drive device 55 that is interlocked with one of the holders 51A, and this rotational drive device 55 includes a motor 56, a motor 56, and one of the holders 51A.
and a winding transmission mechanism 57 that interlocks the two. Both holders 51A, 5 on the axis 53
It can be freely inserted and removed between 1B and has an expansion and contraction body 58 in the middle.
A center shaft 59 is provided, and an insertion/extraction actuator 60 interlocked with the center shaft 59 is further provided. That is, through holes 61A and 61B are formed in both holders 51A and 51B on the axis 53, and the center shaft 59 can be freely inserted and removed between these through holes 61A and 61B. The insertion/extraction actuation device 60 is connected to one of the carts 44A.
It consists of a multistage cylinder device 62 attached to the piston rod 63, and a movable body 64 attached to the piston rod 63.
One end of the center shaft 59 is connected to this movable body 64. The expansion/contraction body 58 is made of a rubber tube, for example, and has a small diameter portion 59 formed in the middle of the center shaft 59.
After being fitted onto A, both ends thereof are connected to the small diameter portion 59.
It is fixed to A. A fluid passage 65 for expanding and contracting the expansion and contraction body 58 is formed from the small diameter portion 59A in the center shaft 59 to one end side, and the inner end of this fluid passage 65 is open inside the expansion and contraction body 58 and is open to the outside. The end communicates with a fluid supply/discharge pipe 67 via a rotary joint 66 . A clamped portion 68 is provided at the tip of the center shaft 59.
is formed, and a click-stop type clamping device 69 that acts on this clamped portion 68 is provided on the other truck 44B. A pressure receiving plate 70 is fixed to the inside of the rotary joint 66 near one end of the center shaft 59, and a cylinder device 71 facing the pressure receiving plate 70 from the inside is attached to one of the carriages 44A. 72 indicates a bearing.

FIG. 2 shows a state in which a small-diameter laminated tube 9 is laminated and molded. At this time, the center shaft 59 is inserted, and the clamp device 69 clamps the clamped portion 68 at the tip end, and the cylinder device 71
acts to pull the center shaft 59 toward one end, making the center shaft 59 in a tensioned state, and furthermore, the fluid path 65
A fluid such as air is supplied into the inflatable body 58 via a pipe, and the inflated inflatable body 58 is brought into pressure contact with the inner surface of the inner tube 8, so that the inner tube 8 and the center shaft 59 can rotate together. By then operating the rotary drive device 55, both holders 51
A, 51B, center shaft 59, inner layer tube 8, etc. are the shaft center 53
As described above, the resin liquid impregnated glass fiber 4 from the resin liquid impregnating device 3 side is wound and laminated on the inner layer tube 8, and the outer layer tube 43 is laminated, thereby forming the laminated tube 9. can get. At this time, since the intermediate portion of the small diameter inner layer tube 8 is held on the center axis 59 side via the expansion/contraction body 58, the desired lamination molding can be performed without bending. After the laminated tube 9 is formed as shown in FIG. 2, the intermediate portion of the laminated tube 9 is first clamped by the transfer device 10. Then, with the clamp by the clamp device 69 released, the insertion/extraction actuating device 60 is activated to remove the center shaft 59. At this time, the expansion and contraction body 58 has already been contracted, and the extraction is performed to the extent that the clamped portion 68 is accommodated in the through hole 61A. Next, the travel drive device 47 is operated to move the carriages 44A, 44B apart, and the holders 51A, 51B are extracted from the laminated pipe 9 as shown in FIG. As a result, the laminated tube 9 is completely entrusted to the transfer device 10, and is transferred to the laminated tube take-out section 7 by the operation of the transfer device 10. Thereafter, the inner tube 8 of the inner tube supply section 6 is taken out by the transfer device 10, and the inner tube 8 can be set by carrying out the reverse operation to that described above.

FIG. 4 shows a state in which a large-diameter laminated tube 9 is formed, with the center shaft 59 and the like being inactive.

Note that changes in the diameter of the laminated tube 9 can be coped with by fitting and holding the inner layer tube 8 in the optimal inner layer tube holding portions 54A, 54B of the holders 51A, 51B.

Effects of the Invention According to the laminated pipe manufacturing apparatus of the present invention having the above configuration, by bringing the pair of holders close to each other, inner layer pipes of various diameters can be held via the stepped inner layer pipe holder. Furthermore, by separating the holders, the formed laminated tube can be removed. Therefore, the work of taking out the laminated pipe and the work of setting a new inner layer pipe can be carried out simply and quickly by simply moving the two holders apart or toward each other, and efficiency can be improved.
In addition, during molding, by inserting the center shaft and inflating the expansion and contraction body, the middle part of the inner layer tube can be held on the center axis side through this expansion and contraction body, and the deflection (bending) of the inner layer tube can be prevented. This can be prevented and the desired lamination can be performed accurately, which is particularly advantageous for forming small diameter pipes.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is a schematic side view of the entire structure, FIGS. 2 to 4 are partially cutaway front views of a laminated pipe manufacturing apparatus, and FIG. 6 is a side view of the resin liquid impregnation device, FIG. 6 is a cross-sectional view of the same main part, and FIG.
The figures are A-A sectional views in Figure 5, Figures 8 and 9.
The figure is a longitudinal sectional front view of main parts showing a conventional example. 4...Resin liquid impregnated glass fiber, 8...Inner layer tube, 9...
Laminated tube, 43... Outer layer tube, 51A, 51B... Holder, 53... Axial center, 54A, 54B... Inner layer tube holding part, 55... Rotation drive device, 58... Expansion/contraction body, 59...
Center shaft, 60...insertion/extraction actuation device.

Claims (1)

[Claims] 1. A laminated pipe manufacturing device that forms a laminated pipe by winding glass fibers impregnated with a resin liquid on the outer peripheral surface of the inner pipe while rotating the inner pipe to form a laminated pipe, which is rotatable on the same axis. and a pair of holders that can move toward and away from each other are provided, a plurality of inner layer tube holders are formed in a stepped shape on opposite sides of these holders, and a rotational drive device that is interlocked with at least one of the holders is provided. A laminated pipe manufacturing apparatus, comprising: a center shaft which can be freely inserted and removed between both holders on the axis and has an expansion/contraction body in the middle; and an insertion/extraction operation device interlocked with the center shaft.