JPH0331333B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to pipe manufacturing equipment for obtaining fiber-reinforced resin pipes by winding glass fibers impregnated with resin liquid onto the outer peripheral surface of a cylindrical rotating mold. .

Prior Art Conventionally, as shown in FIG. 10, a long glass fiber 121 is wound around a core material 120 in the form of a roll.
is guided into the resin liquid tank 123 through a plurality of guide rollers 122 while unwinding from this core material 120, and the resin liquid 1 in the resin liquid tank 123 is
24 is impregnated into the moving glass fiber 121, and the resulting resin liquid-impregnated glass fiber 125 is wound on the outer peripheral surface of the cylindrical rotary mold 126. Then, as shown in FIG.
6 into the heating furnace 127, the resin liquid is hardened by the heating device 128 to form the fiber-reinforced resin pipe 129, and then the fiber-reinforced resin pipe 129 is heated outside the heating furnace 127 as shown in FIG. The rotary mold 126 was being demolded.

Problems to be Solved by the Invention According to the above-mentioned conventional structure, when tube forming is performed at multiple locations, each location has one resin liquid tank and one
23, etc., for the resin liquid-impregnated glass fiber 125, which not only makes the equipment large and expensive, but also makes it difficult to take out the rotary mold 126 around which the resin liquid-impregnated glass fiber 125 is wound. It is disadvantageous to the operating rate because the feeding device must be stopped when installing a new rotary mold 126 or a new rotary mold 126, and it is dangerous and dangerous because taking out and installing is mainly done manually, although a winch device is used. It will take time. Further, when the supply device is stopped for a long time, problems arise in the tank life of the resin liquid tank 123, and there are restrictions such as only thermosetting resin liquids can be used as the resin liquid 124.

Means for Solving the Problems In order to solve the above-mentioned problems, the pipe manufacturing equipment of the present invention is provided with a plurality of upper and lower pipe forming sections that support and rotate the core die, and the pipe forming sections are arranged opposite to each other on one side of the tube forming sections. One supply device for glass fiber impregnated with resin liquid is provided on the other side, and a core supply section and a molded tube take-out section are arranged vertically and arranged facing each other, and the core mold supply section or molded tube take-out section is arranged vertically. A transfer device is provided for transferring the core mold or the formed tube between the core mold and the tube forming section.

According to this configuration, while the supply device is acting on the pipe forming section of one stage of the plurality of stages of pipe forming sections in the vertical direction, the wound resin liquid-impregnated glass fiber is hardening, taking out the molded tube that is integral with the core mold using the delivery device, and supplying a new core mold using the delivery device. Immediately after the operation has been completed and the operation has been stopped, the feeding device can be operated on another stage of tube-forming section to which a new core has been fed.

Embodiment An embodiment of the present invention will be described below based on FIGS. 1 to 9.

In Figures 1 to 3, 1 is a glass fiber stock part, and glass fibers 2 from here are attached to a guide bar 3.
The glass fibers reach one feeding device 5 via the rollers and guide rollers 4, and after passing through the feeding device 5 and become resin liquid-impregnated glass fibers 6, they are formed into tube forming sections 7 and 8 in two upper and lower stages (multiple upper and lower stages). It is supplied to either stage. With these tube forming parts 7 and 8 inside, the feeding device 5
A core mold supply part 9 and a forming tube take-out part 1 are provided on the opposite side.
0 are disposed vertically and arranged vertically, and a delivery device 13 that transfers the core mold 11 or the molded tube 12 between the core mold supply section 9 or the molded tube take-out section 10 and the tube forming sections 7 and 8. is provided.
The guide bar 3 may be of either a stationary type or a movable type (swinging up and down, etc.), and the guide roller 4 may be able to change its vertical position accordingly. The supply device 5 and the tube forming sections 7 and 8 are connected to the frame 14.
installed on the side. That is, on the side of the stock portion 1 of the frame 14, a pair of left and right screw shafts 15 are rotatably disposed with their longitudinal direction being the up and down direction.
These screw shafts 15 are connected to a bevel gear mechanism 16 and a drive shaft 17.
It is interlocked and connected to the lifting drive device 18 via.
A workbench 20 is disposed between a nut body 19 screwed onto both screw shafts 15, and a feed screw 22 interlocked with a feed drive device 21 is disposed on the workbench 20 in the left-right direction. A nut body 23 screwed onto the feed screw 22 is attached to the feeding device 5, and a slide guide device (not shown) for the feeding device 5 is also provided. A pair of upper and lower base frames 24, 25 are provided within the frame body 14, and these base frames 24, 2
The tube forming portions 7, 8 are formed on the tube 5. The core mold supply section 9 and the forming tube take-out section 10 are formed by respectively arranging a plurality of support rails 27 and 28 on a common machine frame 26, and each support rail 27,
The upper rolling surface 28 is formed by rubbers 29 and 30. The delivery device 13 is composed of a pair (plurality) of left and right telescopic arms 32 that can swing back and forth in conjunction with a rocking drive device 31, and a clamp arm 33 attached to the free ends of these telescopic arms 32, and can be opened and closed. The clamp arm 33 has an opening/closing drive (not shown). 34 is a lift device that delivers the core mold 11 to the core mold supply section 9.

According to the embodiment described above, the core mold 11, which has been delivered by the lift device 34 and stored on the core mold supply unit 9, is received by the automatically controlled transfer device 13, and the core mold 11 is transferred by the lift device 34 and stored on the core mold supply unit 9, and is then received by the automatically controlled transfer device 13 and Alternatively, it is carried in the direction B and passed to either the upper or lower tube forming section 7 or 8. Core mold 1 set in tube forming parts 7 and 8
The resin liquid-impregnated glass fiber 6 supplied from the supply device 5 side to the core mold 11 is wound on the outer circumferential surface by the rotary mold of the core mold 11.
As a result of this operation, the supply device 5 reciprocates in the left-right direction, and winding is performed with a uniform thickness over the entire length. During such winding work, the resin liquid of the resin liquid-impregnated glass fiber 6 that has already been wound hardens in the tube forming sections 7 and 8 of the other stages, and the formed tube 12 is formed on the core mold 11. ing. The formed tube 12 is then received by a transfer device 13 and conveyed in the direction of the arrow C or arrow 2 to the formed tube removal section 10. Further, as described above, a new core mold 11 is delivered to the tube forming sections 7 and 8 from which the formed tube 12 has been taken out. As described above, the resin liquid-impregnated glass fiber 6 is cut when a predetermined amount of glass fiber 6 is wound in another stage, and then the work table 20 is raised and lowered by the operation of the lifting drive device 18 to apply cutting frost to a new core mold 11. Set the winding as much as possible.

Next, the detailed structure and operation of the supply device 5 are shown in FIGS.
This will be explained based on FIG. 9. Reference numeral 2 denotes a long glass fiber, which is previously wound into a roll around a core material 40 and stored in the stock portion 1. Note that it may be wound into a bobbin shape. Reference numeral 41 denotes a resin liquid tank with an open top, into which room-temperature curable resin liquid 43 is heated to about 30° C. and supplied from a resin liquid supply device 42 . The resin liquid supply device 42 includes a resin liquid storage section 44,
A resin liquid supply pipe 46 that communicates with the resin liquid storage section 44 and has a resin liquid pump 45 interposed therebetween, a catalyst storage section 47, and a catalyst that communicates with this catalyst storage section 47 and has a catalyst pump 48 interposed therebetween. a supply pipe 49;
Mixing valve 50 with which both supply pipes 46 and 49 communicate
It is configured to automatically supply (replenish) a predetermined amount of resin liquid 43 when the resin liquid 43 falls below a certain level as detected by a liquid level sensor 51 provided in the resin liquid tank 41. . Heating devices 52, 53 are provided in both supply pipes 46, 49, and both pumps 45, 48 are coaxially connected 54 so as to be able to supply at a predetermined ratio. The resin liquid 4
3 supplies, for example, a polyester resin liquid 56 in the drum 55 to the resin liquid storage section 44 via a pump 57, a quantitative meter 58, and a valve 59, and supplies a promoting aid (for example, dimethylanline) 61 in a container 60. At the same time, the pigment 65 in the container 64 is supplied to the resin liquid storage unit 44 via the temperature control drum pump 62 and the quantitative meter 63, and in this state, the agitator 67. A drain discharge pipe 69 having an on-off valve 68 is connected to the lower part of the resin liquid tank 41 . Reference numeral 70 denotes a bending guide device constructed by arranging a large number of glass fiber guide tubes 72 in a cooling box 71, the receiving port 73 of which is connected to the lower part of the resin liquid tank 41, and the entire structure is bent into a J-shape. The outlet 74 is set above the set liquid level of the resin liquid tank 41. Here, the receiving port 73 communicates with the lower part of the resin liquid tank 41 at an angle of 45 degrees. Furthermore, a ring-shaped ceramic 75 is attached to the starting end of each glass fiber guide tube 72 at least in the receiving port 73 of the receiving port 73 and the extracting port 74 . The number of the glass fiber guide tubes 72 is approximately 60, and the average guide length L of the curved guide device 70 is
It is 100mm to 500mm. A cooling medium supply pipe 76 communicates with the upper end of the cooling box 71, and a cooling medium discharge pipe 77 communicates with the lower end, and the flowing cooling medium cools the resin liquid 43 in the glass fiber guide pipe 72 to about 5°C. lower the temperature. A resin liquid receiving tank 78 is provided outside the outlet 74, and the resin liquid receiving tank 78 and the resin liquid tank 41 are communicated with each other through a resin liquid return path 79 to allow the resin liquid 43 to flow naturally. It is configured to be returned to the resin liquid tank 41. A resin liquid draining device 80 is provided above the resin liquid receiving tank 78. This resin liquid draining device 8
0 consists of a lower liquid cutting plate 81 and an upper liquid cutting plate 82, and the distance l between both plates 81 and 82 and the lap height h
By adjusting the amount, the amount of resin liquid 43 impregnated can be determined. Reference numeral 11 denotes the cylindrical core type, and a drip receiver 83 provided below the core type communicates with the resin liquid receiver tank 78 via a return path 84. A glass fiber moving path is formed from the resin liquid tank 41 through the glass fiber guide pipe 72 to reach the upper part of the resin liquid receiving tank 78, and then through the resin liquid draining device 80 to reach the core mold 11. An acetone gun 85 facing downward is disposed above the moving path between the outlet 74 and the resin liquid draining device 80, and the resin liquid 43 is cleaned with acetone 86 from the acetone gun 85.

According to the above embodiment, a large number of glass fibers 2 are unwound from the core material 40 by the rotational winding force on the core mold 11 side, and are then passed through the guide rollers 4 into the resin liquid 43 of the resin liquid tank 41. to go into. The glass fiber 2 is impregnated with the resin liquid 43 while moving inside the glass fiber guide tube 72 together with the resin liquid 43,
The glass fibers 6 are taken out from the takeout port 74 as resin liquid-impregnated glass fibers 6. Then, while moving through the resin liquid draining device 80, excess resin liquid 43 is removed, resulting in the desired amount of impregnated resin. Thereafter, it is wound around the outer periphery of the core mold 11. During such impregnation work, the resin liquid 43 flows into the glass fiber guide tube 7 together with the glass fiber 2.
2, sufficient impregnation can be performed even though the inner diameter and length of the glass fiber guide tube 72 are determined under conditions where the amount of resin liquid stored in the resin liquid tank 41 is small and the resistance is low. It turns out. Further, the resin liquid 43 in the drip tray 83 is transferred to the resin liquid receiving tank 78, and further to the resin liquid receiving tank 78.
The resin liquids 43 are automatically returned to the resin liquid tanks 41, that is, circulated, and can be automatically stirred, so that sufficient impregnation can be achieved as described above, and the amount of resin used can be reduced. Due to these, from the viewpoint of tank life issues, it is possible to easily adopt the resin liquid 43 that hardens at room temperature, and by adopting the resin liquid 43 that hardens at room temperature, the resin liquid 43 can be cured at room temperature after being wound around the core mold 11 and laminated. The resin liquid 43 can be cured at the bottom, and the glass fiber-reinforced molded tube 12 can be obtained without employing a heat curing process. Note that as the work progresses, the resin liquid 43 gradually disappears, but this is caused by the liquid level sensor 51.
It will be replenished via the mixing valve 50 according to instructions from the mixing valve 50.

For example, at the end of a day's work, acetone 86 is supplied from an acetone gun 85 and cleaned while being circulated in the same manner as the resin liquid 43, in preparation for the next work.

Next, details of the tube forming parts 7 and 8 will be explained based on FIG. 4. 90A and 90B are a pair of carts with wheels 9
They are placed on rails 92A and 92B laid on the base frames 24 and 25 via 1A and 91B, and are configured to be able to move toward and away from each other via a traveling drive device 93. The travel drive device 93 consists of a motor 94 that can be driven in forward and reverse directions, and a pair of left and right screw shafts 96A, 96B that can move forward and backward in conjunction with the motor 94 via a gear mechanism 95. 96B is interlocked with the carts 90A and 90B. Cone-shaped holders 97A, 97B are disposed on opposite sides of the bogies 90A, 90B, respectively, and these holders 97A, 97B are attached to the same holder along the running direction of the bogies via bearings 98A, 98B, respectively. It is arranged rotatably around an axis 99. A plurality of core-shaped holding parts 100A and 100B are formed in a step-like manner on opposing surfaces of the holding tools 97A and 97B, respectively. One trolley 90A has
Rotary drive device 10 interlocked with one holder 97A
1 is provided, and this rotary drive device 101 includes a motor 102, this motor 102, and one holder 9.
7A, and a winding transmission mechanism 103 that interlocks with Both holders 97 on the axis 99
A center shaft 105 is provided which can be freely inserted and removed between A and 97B and has an expansion/contraction body 104 in the middle, and an insertion/extraction actuating device 106 that is interlocked with the center shaft 105 is provided. That is, both holders 9 on the axis 99
Through holes 107A and 107B are formed in 7A and 97B, and the center shaft 105 can be freely inserted and removed between these through holes 107A and 107B. The insertion/extraction work device 106 consists of a multi-stage cylinder device 108 attached to one truck 90A and a movable body 110 attached to its piston rod 109.
One end of a center shaft 105 is connected to 10. The expansion/contraction body 104 is made of, for example, a rubber tube, and is fitted onto the small diameter portion 105a formed at the middle portion of the center shaft 105, and then both ends thereof are attached to the small diameter portion 105a.
is fixed to. A fluid path 111 for expanding and contracting the expansion and contraction body 104 is formed from the small diameter portion 105a in the center shaft 105 to one end side.
The inner end thereof is open in the expansion/contraction body 104, and the outer end thereof is communicated with a fluid supply/discharge pipe 113 via an A rotary joint 112. A clamped portion 114 is formed at the tip of the center shaft 105, and a click-stop type clamping device 115 that acts on the clamped portion 114 is provided on the other carriage 90B. A pressure receiving plate 116 is fixed to the inside of the rotary joint 112 near one end of the center shaft 105, and a cylinder device 117 facing the pressure receiving plate 116 from the inside is attached to one of the carts 90A. 118 indicates a bearing.

FIG. 4 shows a state in which a small-diameter molded tube 12 is molded. At this time, the center shaft 105 is inserted, and the clamp device 115 clamps the clamped portion 114 at the tip end, and the cylinder device 117 acts on the pressure receiving plate 116 to pull the center shaft 105 toward one end. The inflatable body 104 is in a tensioned position and then inflated by supplying fluid such as air into the inflatable body 104 through the fluid path 111 or the like.
are pressed against the inner surface of the core mold 11, and these core molds 11
and the center shaft 105 are integrally rotatable. Therefore, by operating the rotation drive device 101, both holders 97A, 97B, the center shaft 105, the core mold 11, etc. rotate around the axis 99, and as described above, the rotation from the supply device 5 side is caused. A molded tube 12 is obtained by winding and laminating the resin liquid-impregnated glass fiber 6 on the core mold 11. At that time, small diameter core type 1
1, the middle part is connected to the central shaft 1 through the expansion and contraction body 104.
Since it is held on the 05 side, the desired lamination molding can be performed without bending. After forming the formed tube 12 as shown in FIG. 4, first, the middle portion of the formed tube 12 is clamped by the transfer device 13. Then, with the clamp by the clamp device 115 released, the insertion/extraction actuating device 106 is activated to extract the center shaft 105. At this time, the expansion and contraction body 104 has already been contracted, and the extraction is performed to the extent that the clamped portion 114 is accommodated in the through hole 107A. Next, the travel drive device 93 is activated to move both carts 90A and 90B apart,
Then, as shown in FIG. 5, both holders 97A and 97B are pulled out from the core mold 11. As a result, the forming tube 12 is completely entrusted to the transfer device 13 together with the core mold 11, and is then transferred to the forming tube take-out section 10 by the operation of the transfer device 13. Thereafter, the core mold 11 in the core mold supply section 9 is taken out by the transfer device 13, and the core mold 11 can be set by performing an operation opposite to that described above.

FIG. 6 shows a state in which a large-diameter forming tube 12 is formed, with the center shaft 105 and the like being inactive.

In addition, regarding the diameter change of the formed tube 12, the core mold 11
The holding position can be handled by externally fitting and holding the optimum core-type holding parts 100A, 100B in the holders 97A, 97B.

Effects of the Invention According to the pipe manufacturing equipment of the present invention having the above configuration, while the feeding device is acting on the tube forming section of one stage of the plurality of stages of pipe forming sections in the vertical direction, the pipe forming section of the other stage is being operated. It is possible to harden the wound glass fiber impregnated with resin liquid, use the delivery device to take out the molded tube that is integral with the core mold, and use the delivery device to supply a new core mold. ,
Further, immediately after the feeding device has finished its action on the tube forming section of one stage and the operation has been stopped, the feeding device can be started to act on the tube forming section of another stage to which a core mold has been newly supplied. can. Therefore,
Since one feeding device, core feeding section, forming tube take-out section, and delivery device can each correspond to and operate on multiple stages of tube forming sections, the entire equipment can be made smaller and lower in price. Furthermore, by employing a delivery device, it is possible to not only mechanize the removal and installation but also to automate it, making it possible to perform it safely and quickly. Furthermore, since the supply equipment only needs to be stopped for a short time, tank life problems can be solved.
For example, other resin liquids such as room-temperature curable resin liquids can also be easily adopted.

[Brief explanation of drawings]

1 to 9 show one embodiment of the present invention, FIG. 1 is a schematic side view of the whole, FIG. 2 is a view taken along arrow A-A in FIG. 1, and FIG. Arrow view, 4th
Figures 7 to 6 are partially cutaway front views of the tube forming part.
The figure is an explanatory side view of the supply device, FIG. 8 is a cross-sectional view of the same essential parts, FIG.
0 to 12 are process explanatory diagrams showing a conventional example. 1...Glass fiber stock part, 2...Glass fiber,
5... Supply device, 6... Resin liquid impregnated glass fiber, 7,
8... Pipe forming section, 9... Core mold supply section, 10... Forming tube take-out section, 11... Core mold, 12... Forming tube, 13... Delivery device, 20... Work table, 70... Curving guide device,
97A, 97B...Holder, 100A, 100B...
Core holding part.

Claims (1)

[Claims] 1 A plurality of upper and lower tube forming sections are provided to support and rotate the core mold, one feeding device for resin liquid impregnated glass fiber is provided facing one side of these tube forming sections, and a core mold is provided opposite to the other side. A mold supply part and a molded tube take-out part are arranged vertically and a transfer device is provided for transferring the core mold or molded tube between the core mold supply part or the molded tube take-out part and the tube forming part. Pipe manufacturing equipment characterized by: