JP5699049B2 - Thermosetting mixed composition supply apparatus and resin concrete material manufacturing apparatus using the supply apparatus - Google Patents

Description

  The present invention relates to a thermosetting mixed composition supply apparatus and a resin concrete material manufacturing apparatus using the supply apparatus.

Reinforced resin pipes with resin concrete (resin mortar) layers (see, for example, Patent Document 1) are superior in terms of acid resistance, wear resistance, and earthquake resistance, and are lightweight and have good workability. It is often used for drain pipes.
The resin concrete layer is formed by laminating a resin concrete material, which is a mixed kneaded product of an aggregate such as silica sand, a thermosetting resin liquid (for example, a mixed liquid of an unsaturated polyester and a polymerizable monomer), and a curing agent. After the lamination, it is obtained by polymerizing the polymerization component in the thermosetting resin liquid in the resin concrete material.

  As the resin concrete material manufacturing apparatus, a cylindrical kneading cylinder (cylinder) having an outlet at one end in the axial direction and an aggregate supply hopper provided at the other axial end of the kneading cylinder In the kneading cylinder part of the kneading apparatus comprising a screw conveyor, the aggregate is supplied from the aggregate supply hopper, while the thermosetting resin liquid and the liquid curing agent are separately supplied downstream from the aggregate supply hopper. Supplying into a kneading cylinder part via piping, kneading in a kneading cylinder part, conveying aggregate, a thermosetting resin, and a liquid hardening | curing agent with a screw conveyor, and discharging a kneaded material from the said exit as resin concrete material The thing is used (for example, refer patent document 2).

JP 2002-98269 A JP-A-5-116130

However, in the conventional resin concrete material manufacturing apparatus, unless the kneading tube part is lengthened and the kneading time is lengthened, the dispersion of the curing agent is not uniformed in the obtained resin concrete material and is partially cured. May result in an insufficiently molded product.
On the other hand, increasing the compounding amount of the curing agent can solve the above-mentioned problems. However, there is a problem in terms of material cost, and peroxide is used as the curing agent. There is a problem that increases.
On the other hand, after a thermosetting resin liquid and a liquid curing agent are uniformly stirred and mixed in advance in a stirring tank or the like to obtain a thermosetting mixed composition, the thermosetting mixed composition is put into a kneading apparatus with aggregate. Although there is a method of supplying, in such a method, if the thermosetting mixed composition stirred and mixed in the stirring tank is not consumed in a short time, it may be cured before kneading with the aggregate.

Therefore, the inventor of the present invention makes the tip of the liquid curing agent supply pipe provided with the curing agent discharge port face the thermosetting resin liquid supply pipe on the upstream side of the discharge port of the thermosetting resin liquid supply pipe. A liquid curing agent supply pipe was piped, and a thermosetting resin liquid and a liquid curing agent were mixed and supplied into the kneading tube portion in the vicinity of the discharge port of the thermosetting resin liquid supply pipe.
In this method, compared with the conventional method in which the thermosetting resin liquid and the liquid curing agent are individually supplied into the kneading tube portion, the thermosetting mixing in which the thermosetting resin liquid and the liquid curing agent are mixed immediately before use. Since the composition is supplied into the kneading tube portion, a homogeneous resin concrete material can be produced using a short kneading tube portion, and before the thermosetting mixed composition is kneaded with the aggregate, Does not cure.

However, in the case of such a method, since the mixing ratio of the liquid curing agent is 1/50 or less of the thermosetting resin liquid, the diameter of the liquid curing agent supply pipe is also the thermosetting resin liquid supply pipe portion where the tip portion faces. It is smaller than the diameter.
Therefore, if the discharge port of the thermosetting resin liquid supply pipe is clogged and the resin pressure in the thermosetting resin liquid supply pipe rises, the liquid curing agent supply pipe with a small diameter is immediately subjected to a reverse pressure to be liquid cured. Since the curing agent pressure in the agent supply pipe increases, there is a risk of damage. And the hardening | curing agent which the operator leaked by damage may enter into an eye, and it will lead to a blindness accident, or if it is a peroxide, it may cause a fire accident.

  In view of the above circumstances, the present invention can supply the thermosetting resin liquid and the liquid curing agent with uniform stirring immediately before the use of the thermosetting mixed composition, as well as breakage of the liquid curing agent piping, etc. It is an object of the present invention to provide a thermosetting mixed composition supplying apparatus having no problem, and a resin concrete material manufacturing apparatus capable of stably and safely manufacturing a homogeneous resin concrete material using the thermosetting mixed composition supplying apparatus. Yes.

In order to achieve the above object, a thermosetting mixed composition supply apparatus according to the present invention supplies a thermosetting resin liquid supply pipe having a resin liquid discharge port and a liquid curing agent for the thermosetting resin liquid. A liquid curing agent supply pipe having a curing agent discharge port; and a gas supply pipe having a gas blowing port. The gas supply pipe has a thermosetting resin liquid upstream of the resin liquid discharge port. The liquid curing agent supply pipe is piped so as to be located in the supply pipe, and the liquid curing agent supply pipe is piped so that the curing agent discharge port is located in the gas supply pipe upstream of the gas blowing port. Yes.
In addition, in this invention, the front-end | tip part of each piping means a downstream side edge part.

The thermosetting mixed composition supply device of the present invention is not particularly limited. For example, the tip portion of the thermosetting resin liquid supply pipe has a straight tube shape with the tip closed, and the peripheral wall of the downstream end portion It is good also as a structure by which the resin liquid discharge outlet was perforated.
That is, with such a configuration, the thermosetting resin liquid that has flowed through the thermosetting resin liquid supply pipe hits the tip wall, and a vortex occurs in the tip of the thermosetting resin liquid supply pipe, so that stirring is more efficient. Yes.

Moreover, the thermosetting mixed composition supply apparatus of the present invention is not particularly limited. For example, the resin liquid discharge port may be covered with a net-like body.
That is, according to such a configuration, the reticulate body functions as a static mixer, and the agitation is improved.
The mesh body may be provided so as to cover the resin liquid discharge port from the inside of the pipe or from the outside.

  The gas supplied through the gas supply pipe is not particularly limited, but air is preferable because it is inexpensive and friendly to the environment.

Although it does not specifically limit as said thermosetting resin, For example, unsaturated polyester resin, an epoxy resin, a urethane resin etc. are mentioned.
Although it does not specifically limit as a liquid hardening | curing agent, For example, an organic peroxide, alcohol, water, an amine, etc. are mentioned.

Although it does not specifically limit as a use of the thermosetting mixed composition supply apparatus of this invention, For example, the following uses are mentioned.
(1) The resin liquid discharge port faces the kneading part of the kneading apparatus, the thermosetting mixed composition is supplied into the kneading part, and the resin concrete material is obtained by kneading with the aggregate charged in the kneading part.
And the obtained resin concrete material is supplied to a type | mold, and it is shape-hardened to a pipe | tube, a block, and a column shape.
(2) The resin liquid discharge port faces the impregnation tank, the thermosetting mixed composition is supplied to the impregnation tank, and long reinforcing fibers such as glass roving are passed through the supplied thermosetting mixed composition. Then, the thermosetting mixed composition is supplied to the mold in a state in which the reinforcing fiber is impregnated, and is molded and cured into a tube, block, or column shape.

  The resin concrete material manufacturing apparatus according to the present invention includes a thermosetting mixed composition supply apparatus according to the present invention, and a thermosetting resin liquid discharged from the resin liquid discharge port of the thermosetting mixed composition supply apparatus. A kneading apparatus for kneading the aggregate is provided.

Although the resin concrete material manufacturing apparatus of the present invention is not particularly limited, the resin liquid discharge port is covered with a mesh body and faces the kneading part of the kneading apparatus, and the mesh size of the mesh body is the particle size of the aggregate. It is preferable that it is less than.
That is, it is possible to reliably suppress the entry of aggregate from the kneading tube portion side into the thermosetting resin liquid supply pipe, eliminate clogging of the resin liquid discharge port due to the penetration of the aggregate, and the thermosetting resin liquid supply pipe The increase in the internal resin liquid pressure can prevent an increase in the internal pressure of the liquid curing agent supply pipe.
Also, since the resin liquid discharge port faces the kneading part, the aggregate becomes foamed by acting on the gas, and passes through the thermosetting mixed composition that has become bulky in the kneading part. The curable mixed composition is easily entangled with the aggregate, and the aggregate and the thermosetting mixed composition can be kneaded more quickly and uniformly.

In the present invention, as the thermosetting resin liquid constituting the resin concrete material, one that is generally used for the resin concrete material is used, and is not particularly limited. For example, it has an unsaturated polyester and a vinyl group. A mixed composition with a polymerizable monomer is mentioned.
Although it does not specifically limit as a liquid hardening | curing agent, For example, a diacyl peroxide type | system | group, a peroxyester type | system | group, a hydroperoxide type | system | group, a dialkyl peroxide type | system | group, a ketone peroxide type | system | group, a peroxy ketal type | system | group, an alkyl perester type | system | group, a percarbonate. And organic ethyl peroxide, and methyl ethyl ketone peroxide is preferred.

  The resin concrete material obtained by the resin cocrete material production apparatus of the present invention is used not only for the production of reinforced resin pipes but also for the production of blocks, pillars, piles and the like used in civil engineering.

  As described above, the thermosetting mixed composition supply apparatus of the present invention includes a thermosetting resin liquid supply pipe having a resin liquid discharge port, and a curing agent discharge port for supplying a liquid curing agent of the thermosetting resin liquid. A liquid curing agent supply pipe having a gas outlet and a gas supply pipe having a gas outlet, and the gas supply pipe is disposed in a thermosetting resin liquid supply pipe upstream of the resin liquid outlet. The liquid hardener supply pipe is piped so that the hardener discharge port is located in the gas supply pipe upstream of the gas outlet, so there is no stirring tank or the like. However, just before use, the thermosetting resin liquid and the liquid curing agent are sufficiently mixed without unevenness, and a uniform thermosetting mixed composition can always be supplied.

Moreover, the load on the liquid hardener pipe side due to clogging of the thermosetting resin liquid supply pipe can be reduced by gas, and the liquid hardener pipe can be prevented from being damaged.
In addition, by controlling the amount of the thermosetting resin liquid flowing through the thermosetting resin liquid supply pipe and the amount of the liquid curing agent flowing through the liquid hardener supply pipe using a valve or the like, the thermosetting resin liquid and The mixing ratio with the liquid curing agent can be easily changed, and it can also be used when mixing in a narrow facility where a stirring blade cannot be installed, or when the chemical reaction is fast and the pot life from mixing to curing is short. it can.

  The resin concrete material manufacturing apparatus of the present invention includes the thermosetting mixed composition supply apparatus of the present invention, and the thermosetting resin liquid and bone discharged from the resin liquid discharge port of the thermosetting mixed composition supply apparatus. A homogenous resin concrete material is obtained, and as a result, the cured product obtained by curing the resin concrete material is homogeneous with no partial curing failure It becomes.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which represented typically the outline of one embodiment of the resin concrete material manufacturing apparatus concerning this invention. It is the schematic of the thermosetting mixed composition supply apparatus of this invention used for the resin concrete material manufacturing apparatus of FIG. It is a principal part expanded sectional view of FIG. It is the XX sectional view taken on the line of FIG. It is an expanded sectional view of the nozzle member front-end | tip of the air piping of FIG. 3, and its vicinity part. It is a perspective view of the mesh body of the thermosetting mixed composition supply apparatus of FIG. It is sectional drawing of the kneading | mixing apparatus part of the resin concrete material manufacturing apparatus of FIG. It is a plane schematic diagram of one example of the reinforced resin pipe manufacturing apparatus used for the manufacturing method of the reinforced resin pipe using the resin concrete material manufacturing apparatus of this invention. It is the schematic which looked at the material molding machine of the reinforced resin pipe manufacturing apparatus of FIG. 8 from the exit side of the kneading cylinder part. It is a perspective view explaining the winding state of the sheet-like resin concrete material on the inner layer of the mandrel of the reinforced resin pipe manufacturing apparatus of FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
As shown in FIG. 1, the resin concrete material manufacturing apparatus A includes a thermosetting mixed composition supply apparatus 1 and a kneading apparatus 2.

The thermosetting mixed composition supply apparatus 1 includes a thermosetting resin material mixing tank 11, a thermosetting resin liquid adjustment tank 12, a liquid curing agent tank 13, a thermosetting resin liquid supply pipe 14, and a liquid curing. An agent supply pipe 15 and an air pipe 16 which is a gas supply pipe are provided.
The thermosetting resin material mixing tank 11 mixes a material (for example, a polymerizable monomer such as unsaturated polyester or styrene monomer) that becomes a thermosetting resin liquid at a predetermined ratio, and the thermosetting resin liquid adjustment tank 12. To send to.
The thermosetting resin liquid adjustment tank 12 can control the stored thermosetting resin liquid to a predetermined temperature, and is connected to the thermosetting resin liquid supply pipe 14 via the plunger pump 17a. Yes.

The liquid curing agent tank 13 is connected to the curing agent supply pipe 15 via the plunger pump 17b.
The plunger pump 17b is configured to stroke a plurality of pistons with a phase shifted via a cam mechanism to suppress pulsation.

As shown in FIG. 2, the thermosetting resin liquid supply pipe 14 includes a main pipe portion 141, a resin pressure injector 142, a coupler 143, a resin injection cylinder 144, and a recycling pipe 146.
One end of the main pipe portion 141 is connected to the discharge side of the plunger pump 17a, and the other end is connected to the resin pressure injector 142 as shown in FIGS.

The resin pressure injector 142 has a cheese shape, one end of the main pipe part 141 is connected to the branch part 142b, the upper screw cylinder part 143b of the coupler 143 is connected to the lower end of the straight pipe part 142a, and the straight pipe part. A lower screw cylinder portion 163a of an air nozzle member 163, which will be described later, is connected to the upper end of 142a.
The coupler 143 has a lower screw cylinder portion 143a connected to the flange portion 144a of the resin injection cylinder 144, and an air nozzle tip portion 163c of an air nozzle member 163 to be described later passes therethrough. The thermosetting resin liquid sent from the side can pass around the air nozzle tip 163c.

The resin injection cylinder 144 constitutes the distal end portion of the thermosetting resin liquid supply pipe 14, and includes a flange portion 144a and a cylinder body portion 144b.
The outer diameter of the flange portion 144 a is larger than the inner diameter of the pipe attachment port 21 c of the kneading cylinder portion 21, and is connected to the lower end of the coupler 143.

The cylinder main body 144b has a bottomed cylindrical shape with an outer diameter that is closed at the lower end, which is the tip of the thermosetting resin liquid supply pipe 14, and can be inserted into the pipe attachment port 21c.
Four (only three are shown in the figure) resin liquid discharge ports 144c are formed in the lower peripheral wall of the cylinder main body 144b.
Each resin liquid discharge port 144c has a long hole shape extending in the vertical direction.

In addition, a mesh body 145 is housed inside the cylinder body 144b.
As shown in FIG. 6, the net-like body 145 has a slightly fine mesh that is almost the same as the particle size of the aggregate, and has an outer diameter that is substantially the same as the inner diameter of the cylinder body portion 144 b. The resin liquid discharge port 144c is covered from the inside of the cylinder body 144b so that liquid and gas can pass through.

  The resin injection cylinder 144 is attached to the kneading cylinder portion 21 so that the cylinder main body portion 144b faces the connecting portion 22d of the screw conveyor 22 in the kneading cylinder portion 21 via the pipe attachment port 21c.

One end of the recycling pipe 146 is connected to the main pipe part 141 through an L port three-way valve LV provided in the middle of the main pipe part 141, and the other end is connected to the thermosetting resin liquid adjustment tank 12.
In other words, the recycle pipe 146 can circulate the thermosetting resin liquid in the thermosetting resin liquid adjustment tank 12 by switching the L port three-way valve LV.

The air pipe 16 includes a main pipe portion 161, a connecting cheese 162, and an air nozzle member 163.
As shown in FIG. 1, one end of the main pipe portion 161 is provided with an air compressor, an air supply pump, etc., and is connected to an air supply device 165, and the other end is a branch of the connected cheese 162 as shown in FIG. It is connected to the cylinder part 162b.

As shown in FIG. 3, the connected cheese 162 is connected to the lower screw tube portion 163b of the air nozzle member 163 at the lower end of the straight tube portion 162a, and below the hardener nozzle member 152 described later at the upper end of the straight tube portion 162a. The screw cylinder part 152a is connected.
The air nozzle member 163 includes an upper screw cylinder portion 163b, a lower screw cylinder portion 163a, and an air nozzle tip portion 163c.

  The air nozzle tip 163c is provided so as to extend downward from the lower screw cylinder portion 163a, and a thermosetting resin liquid supply pipe whose lower end opening (air blowing port) is slightly above the resin liquid discharge port 144c. A ring-shaped resin liquid passage is formed around the resin injection cylinder 144, which is the tip of 14, as shown in FIG.

The liquid hardener supply pipe 15 includes a main pipe portion 151, a hardener nozzle member 152, and a recycle pipe 155.
One end of the main pipe portion 151 is connected to the plunger pump 17 b and the other end is connected to the upper screw cylinder portion 152 c of the nozzle member 152.

The curing agent nozzle member 152 includes an upper screw cylinder portion 152c, a lower screw cylinder portion 152a, and a curing agent nozzle tip portion 152b.
The lower screw cylinder part 152 a is connected to the upper end of the straight pipe part 162 a of the connecting cheese 162.

The hardener nozzle tip portion 152b is provided so as to extend downward from the lower screw cylinder portion 152a, and the lower end opening (hardener discharge port) is the lower end of the air nozzle tip portion 163c of the air nozzle member 163, That is, it faces the air nozzle tip 163c, which is the tip of the air pipe 16, slightly upstream from the air outlet (for example, but not limited to the upper side of L1 = D1 shown in FIG. 5).
The hardener nozzle tip 152b is not particularly limited, but the inner diameter D1 is preferably about 1/10 of the inner diameter D2 of the cylinder body 144b.

The recycle pipe 155 can circulate the liquid curing agent of the liquid curing agent tongue 13 by switching the L port three-way valve LV.
In FIG. 2, P is a pressure gauge, FM is a flow meter, 19 is a detergent pipe, TV is a T-port three-way valve, and LV is an L-port three-way valve.

As shown in FIG. 7, the kneading apparatus 2 includes a kneading cylinder portion 21, a screw conveyor 22, and an aggregate supply hopper 23.
The kneading cylinder part 21 is provided with an opening 21b in which one end in the axial direction is opened and becomes an outlet 21a for the resin concrete material obtained by kneading, and the aggregate supply hopper 23 faces from above at the other end.

  Further, the kneading tube portion 21 is provided with a pipe attachment port 21c into which the cylinder main body portion 144b of the resin injection cylinder 144, which is the tip portion of the thermosetting resin liquid supply pipe 14, is inserted, at an intermediate position in the axial direction thereof. ing.

In the screw conveyor 22, one end of a shaft 22a is pivotally supported by a substantially Y-shaped bearing portion provided so as to partition a part of the outlet 21a, and the other end of the shaft 22a is the other end of the kneading tube portion 21. It is connected to a drive device (including a motor, a transmission, etc.) not shown through the wall and rotates around a shaft 22a.
Further, the screw conveyor 22 is a kneading portion in which a plurality of kneading blades 22b are spirally provided around the shaft 22a at one end side, and a spiral conveying blade 22c having the other end side continuous is a shaft. It is an aggregate conveying part provided around 22a, and no blades are provided at the connecting part 22d between the kneading part and the aggregate conveying part.

Since the resin concrete material manufacturing apparatus A is configured as described above, the liquid curing agent sent to the leading curing agent nozzle tip 152b via the liquid curing agent supply pipe 15 is temporarily supplied to the air pipe 16. The air nozzle is inserted into the air injection tip 163 c and blown off with air pressure, and is supplied together with the air into the resin injection cylinder 144 b which is the tip of the thermosetting resin liquid supply pipe 14.
The liquid curing agent supplied into the resin injecting cylinder 144b is dispersed and mixed in the thermosetting resin liquid sent through the thermosetting resin liquid supply pipe 14, but the liquid curing agent is The thermosetting resin liquid is dispersed and mixed in a foamed state in the resin injection cylinder 144b.

Further, the dispersed and mixed thermosetting mixed composition is discharged into the kneading tube portion 21 from the resin liquid discharge port 144c while being further foamed through the mesh of the network 145.
On the other hand, the aggregate (for example, No. 5 silica sand) thrown in from the aggregate supply hopper 23 is sent to the connecting portion 22d side by the conveying blade 22c, and is further supplied in a foamed form so as to be stored near the connecting portion 22d. The resulting thermosetting mixed composition is then sent to the kneading section while being rolled up, and is kneaded and mixed by the kneading blades 22b to become the resin concrete material RC and discharged from the outlet 21a.

That is, since this resin concrete manufacturing apparatus A is supplied in the kneading cylinder part 21 in the state of the thermosetting mixed composition in which the thermosetting resin liquid and the liquid curing agent are almost uniformly mixed in advance, the curing agent The mixture is kneaded and mixed with the aggregate in the kneading tube portion 21 without uneven dispersion.
Moreover, since the thermosetting mixed composition is in the form of foam, the aggregate advances toward the outlet 21a while being kneaded inside the foam, so that the kneading and mixing time can be shortened. That is, the length of the kneading tube portion 21 can be shortened, and the apparatus can be miniaturized.

Further, since the lower end of the hardener nozzle tip 152b, which is the discharge port of the liquid hardener supply pipe 15, faces the air nozzle tip 163c of the air pipe 16, the resin liquid discharge port 144c is temporarily closed. Even if the pressure in the thermosetting resin liquid supply pipe 14 increases as a result, a reverse pressure is immediately applied to the liquid hardener supply pipe 15 side via the hardener nozzle tip 152b by the pressure, and the liquid hardener. It is possible to prevent the supply pipe 15 from being damaged.
Further, since the mesh body 145 is provided, the aggregate does not enter the resin injection cylinder 144 and the resin injection cylinder 144 is not blocked, and the thermosetting mixed composition is discharged from the resin via the mesh. Since it is discharged from the outlet 144c, it is mixed more uniformly and becomes a finer foam that is easily entangled with the aggregate.

Next, a reinforced resin pipe manufacturing apparatus B using the resin concrete manufacturing apparatus A and a method of manufacturing the reinforced resin pipe will be described with reference to FIGS.
As shown in FIG. 8, the reinforced resin pipe manufacturing apparatus B includes a pipe forming apparatus 3, a resin concrete layer forming apparatus 4, and a glass fiber reinforced layer forming apparatus 5.

The tube forming apparatus 3 includes a mandrel (a mold having a cylindrical outer periphery) 31 and support bases 32 and 33.
The mandrel 31 includes a mandrel body 31a and a rotating shaft 31b provided along the central axis of the mandrel body 31a.

The one support base 32 rotatably supports one rotating shaft 31b of the mandrel 31, and a motor 32a and a transmission 32b are placed thereon to transmit a predetermined rotational force to the rotating shaft 31b so that the mandrel main body is predetermined. It is made to rotate at a speed of (which is appropriately set according to the diameter and layer structure of the reinforced resin pipe to be obtained).
The other support base 33 is configured to rotatably support the other rotation shaft 31b.

The resin concrete layer forming apparatus 4 includes a carriage 41, the resin concrete material manufacturing apparatus A, and a material molding machine 6.
The carriage 41 is movably provided on a rail R provided in parallel to the central axis of the mandrel 31 so that the rail R runs at a speed corresponding to the molding conditions by a driving force of a driving device (not shown). It has become.

  The resin concrete material manufacturing apparatus A is mounted on the carriage 41 so that the outlet 21 a of the kneading tube portion 21 faces the traveling direction of the carriage 41.

As shown in FIG. 9, the material molding machine 6 includes a hopper 61, a nonwoven fabric roll support portion 62, and two molding rollers 63. A plurality of nonwoven fabric guide rollers 64 and a guide plate 65 are provided, and are mounted on the carriage 41 so as to be adjacent to the resin concrete material manufacturing apparatus A.
The hopper 61 receives the resin concrete material RC discharged from the outlet 21 a from below and supplies it between the forming rollers 63.

  The nonwoven fabric roll support part 62 is configured to rotatably support a nonwoven fabric roll 66 wound in a roll shape.

The strip-shaped nonwoven fabric 66a drawn from the nonwoven fabric roll 66 is first guided to the molding roll 63 on the mandrel side via the nonwoven fabric guide roller 64, and then passes under the molding roller 63 and then another After being guided to the upper side of the molding row 63 on the opposite side through the plural (four in this embodiment) nonwoven fabric guide rollers 64 and over the kneading cylinder portion 21, the mandrel main body 31a became a sheet shape. Along with the resin concrete material RC1, it is wound up.
That is, the resin concrete material RC is once formed between the two forming rolls 63 while being sandwiched between the non-woven fabrics 66a that travel along the two forming rolls 63, and is received from the lower side by the non-woven fabric 66a and guided. It is sent to the vicinity of the mandrel 31 while being guided by the plate 65.

The glass fiber reinforced layer forming apparatus 5 includes a carriage 51 and a glass fiber reinforced layer forming apparatus main body 52.
The carriage 51 is provided on the same rail R as the carriage 41 so as to be able to travel in the same manner as the carriage 41.
In addition, the carriage 51 travels in a state separated from the carriage 41 by a driving device (not shown).

  Although not shown in detail, the glass fiber reinforced layer forming apparatus main body 5 is attached to the mandrel main body 31a of the mandrel 31 after the thermosetting resin liquid is attached to the plurality of roving-shaped glass fibers G. To be guided. Note that the glass fiber reinforced layer forming device 5 may be configured to supply the mandrel 31 with glass fibers or vinylon fibers that are further slid onto the glass fibers G on the roving as necessary.

This reinforced resin pipe manufacturing apparatus B is as described above, and a reinforced resin pipe is manufactured as follows.
(1) As shown in FIG. 8, the mandrel 31 is supported between the support bases 32 and 33.
(2) Although not shown, the release sheet is wound around the surface of the mandrel main body 31a while driving the motor 32a to rotate the mandrel 31.
(3) While making the cart 51 run along the rail R and rotating the mandrel 31, as shown in FIG. 10, a thermosetting mixed composition tank serving as an inner layer through the glass fiber reinforced layer forming device 5 is provided. The passed glass fiber G is wound on a release sheet to form an inner layer.
(4) After the inner layer is formed, the material molding machine 6 is run along the rail R, and the mandrel 31 is rotated, and the resin concrete layer forming apparatus 4 forms the sheet as shown in FIGS. 9 and 10. The resin concrete material sheet RC1 is wound on the inner layer together with the nonwoven fabric 66a.
(5) As shown in FIG. 9, the resin concrete material RC <b> 1 is pressed from above by the pressing roller 34, and the core layer made of the resin concrete material is formed so as to have a uniform thickness.
(6) Although not shown, an outer layer is formed on the core layer in the same manner as the inner layer using the glass fiber reinforced layer forming apparatus 5.
(7) The tubular molded body in which the thermosetting resin forming each layer is cured to a substantially cured state (a state in which it does not lose its shape) is removed from the mandrel 31 and further cured and cured to obtain a reinforced resin tube having a three-layer structure.

According to the method of manufacturing a reinforced resin pipe using the reinforced resin pipe manufacturing apparatus B, the resin concrete in which the aggregate obtained by the resin concrete material manufacturing apparatus A, the thermosetting resin liquid, and the liquid curing agent are uniformly mixed. Since the core layer is formed using the material RC, the core layer does not have a poorly cured portion and is uniform. Therefore, a reinforced resin tube having uniform physical properties can be obtained stably.
Moreover, since the resin concrete material manufacturing apparatus A can be reduced in size, the material molding machine 6 can also be reduced in size.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the thermosetting mixed composition supply device has been used for the production of a resin concrete pipe. For example, a glass fiber reinforced resin pipe or a hard glass fiber reinforced foamed urethane resin molded body ( For example, you may make it use for manufacture of Sekisui Chemical Co., Ltd. neo-lumbar FFU.
In addition, in the case of the said urethane foam molded object, water and alcohol are mentioned as a hardening | curing agent.
In the above embodiment, the reinforced resin pipe is manufactured in a batch manner using the resin concrete material manufacturing apparatus, but the resin concrete material manufacturing apparatus is also used for continuous molding of reinforced resin pipes using the drostform method. Can be used.
In the above-described embodiment, the net-like body has a cylindrical shape, but it may have a cap shape that is fitted so as to be fitted only into the resin liquid discharge hole.

In the above embodiment, the resin liquid discharge port is provided only on the peripheral wall of the cylinder body, but a small resin liquid discharge port may be provided on the bottom of the cylinder body.
Further, in the above embodiment, the cylinder body portion protrudes into the kneading tube portion. However, a net-like body is arranged only at the opening at the tip of the thermosetting resin liquid supply pipe, and the thermosetting property is set. You may make it provide a thermosetting resin liquid supply piping so that the front-end | tip of resin liquid supply piping may correspond to the inner wall surface of a kneading | mixing cylinder part substantially.

A Resin concrete material manufacturing apparatus B Reinforced resin pipe manufacturing apparatus 1 Material supply apparatus 11 Thermosetting resin material mixing tank 12 Thermosetting resin liquid adjustment tank 13 Liquid curing agent tank 14 Thermosetting resin liquid supply pipe 144 Resin injection cylinder 144b Cylinder body (tip of thermosetting resin liquid supply pipe 14)
144c Resin liquid discharge port 145 Reticulated body 15 Liquid hardener supply pipe 152b Hardener nozzle front end (front end of liquid hardener supply pipe 15)
16 Air piping (gas supply piping)
163c Air nozzle tip (tip of air pipe 16)
2 kneading device 21 kneading tube portion 21a outlet 21c pipe attachment port 22 screw conveyor 23 aggregate supply hopper 3 tube forming device 31 mandrel 31a mandrel body 31b rotating shaft 4 resin concrete layer forming device 5 glass fiber reinforced layer forming device 6 material forming machine RC resin concrete material

Claims (6)

A thermosetting resin liquid supply pipe having a resin liquid discharge port; a liquid curing agent supply pipe having a curing agent discharge port for supplying a liquid curing agent of the thermosetting resin liquid; and a gas supply pipe having a gas outlet. With
The gas supply pipe is piped such that the gas outlet is located in the thermosetting resin liquid supply pipe upstream of the resin liquid discharge port,
The thermosetting mixed composition supply apparatus, wherein the liquid curing agent supply pipe is arranged so that the curing agent discharge port is located in a gas supply pipe upstream of the gas blowing port.   2. The thermosetting resin according to claim 1, wherein a tip portion of the thermosetting resin liquid supply pipe has a straight tube shape with a closed tip, and a resin solution discharge port is formed in a peripheral wall of the downstream end portion. Mixed composition supply device.   The thermosetting mixed composition supply apparatus according to claim 1 or 2, wherein the resin liquid discharge port is covered with a net-like body.   The thermosetting mixed composition supply apparatus according to any one of claims 1 to 3, wherein the gas supplied through the gas supply pipe is air. The thermosetting mixed composition supply device according to any one of claims 1 to 4,
A resin concrete material manufacturing apparatus comprising: a kneading device for kneading the thermosetting mixed composition discharged from the resin liquid discharge port of the thermosetting mixed composition supply device and the aggregate.   The resin concrete material manufacturing apparatus according to claim 5, wherein the resin liquid discharge port is covered with a mesh body and faces the kneading part of the kneading apparatus, and the mesh size of the mesh body is less than the particle size of the aggregate.

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