JPH09201829A - Resin injection device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Since each mold has to be moved to the position of the injection nozzle, workability is poor, and cleaning is troublesome and productivity is poor. SOLUTION: A main tank, a curing agent, a filler, and an additive are stirred by rotation of a stirring blade 21 and mixed, and a mixing tank 11 for producing a resin by heating with a heater 16 and a mold 36 are housed inside. Injection tank 6 capable of vacuum sealing, and a plurality of injection nozzles 44 movably arranged in the injection tank 6 for injecting resin into the mold 36.
And a resin introducing passage for introducing the resin generated in the mixing tank 11 into the injecting tank 6 through the filter and supplying the resin to the injecting nozzle 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a resin injecting device for forming a high voltage resin molding by injecting a thermosetting resin such as an epoxy resin into a mold.

[0002]

2. Description of the Related Art FIG. 7 is a sectional view showing a structure of a conventional resin injection device disclosed in, for example, Japanese Patent Laid-Open No. 5-325695. In the figure, 1 is an injection tank capable of vacuum sealing, 2 is installed in the injection tank 1, and an injection port 2 is provided on the upper part.
A mold having a, 3 is a mixing tank for heating and stirring a main component, a curing agent, a filler and an additive necessary for producing a desired thermosetting resin (hereinafter referred to as a resin), and 4 is this mixing tank 3
An injection nozzle connected to the lower part of the injection tank 1 through an injection valve 5 penetrates a part of the injection tank 1 in a vacuum-sealed state, and the tip is inserted into the injection port 2a of the mold 2.

In the conventional resin injecting apparatus constructed as described above, first, the main component necessary for producing a desired resin,
The curing agent, the filler, and the additive are stored in the mixing tank 3, heated to a predetermined temperature and stirred, and in parallel with this, the preheated mold 2 is stored in the injection tank 1. Next, the injection nozzle 4 is penetrated from the upper end of the injection tank 1, and the tip is inserted into the injection port 2 a of the mold 2.

After the pressure in the injection tank 1 is reduced to a vacuum state, the injection valve 5 is opened to inject the resin in the mixing tank 3 into the mold 2 by a predetermined amount and the valve 5 is closed.
Next, the mold 2 is carried out of the injection tank 1 with a leak valve (not shown) opened and the inside of the injection tank 1 being at atmospheric pressure. Further, the resin is washed by putting the washing solvent into the mixing tank 3 and opening the injection valve 5 to allow the washing solvent to flow naturally through the mixing tank 3 and the injection nozzle 5 by gravity. ing.

[0005]

Since the conventional resin injection device is constructed as described above, when a plurality of molds 2 are accommodated in the injection tank 1 to inject the resin, the injection nozzle 4 is not provided. There is a problem in that workability is poor because each die 2 must be moved to the insertion position. In addition, when changing the type of resin to be injected, it is necessary to clean the mixing tank 3 and the injection nozzle 4 and the like, and in a multi-product facility in which the type of resin is frequently changed, the time and effort required for cleaning are high and the production efficiency is high. However, there has been a problem that deterioration of the seal portion occurs if cleaning is not performed sufficiently.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to cope with a plurality of molds, prevent deterioration of a seal portion due to a cleaning solvent, and prevent deterioration of production efficiency due to labor required for cleaning. It is an object of the present invention to provide a possible resin injection device.

[0007]

According to a first aspect of the present invention, there is provided a resin injecting apparatus in which an inner mold is housed and which can be vacuum-sealed; And a plurality of injection nozzles for injecting.

A resin injection device according to a second aspect of the present invention is the resin injection device according to the first aspect, wherein each of the injection nozzles is movable according to the installation position of the mold.

Further, a resin injection device according to a third aspect of the present invention is the resin injection device according to the first aspect, wherein the inside of the injection tank can be heated.

Further, a resin injection device according to a fourth aspect of the present invention is the resin injection device according to the third aspect, wherein heating is performed by steam flowing in a pipe arranged in the floor.

Further, in the resin injecting apparatus according to the fifth aspect of the present invention, the resin is produced by stirring and mixing the main component, the curing agent, the filler and the additive by the rotation of the blade and heating by the heating source. A mixing tank, an injection tank that accommodates the mold inside and can be vacuum-sealed, a plurality of injection nozzles that are movably arranged in the injection tank to inject resin into the mold, and inside the mixing tank And a resin introducing path for introducing the generated resin into the injecting tank through a filter and supplying the resin to the injecting nozzle.

Further, in the resin injecting apparatus according to the sixth aspect of the present invention, the resin is produced by stirring and mixing the main component, the curing agent, the filler and the additive by the rotation of the blade and heating by the heating source. A mixing tank, an injection tank that accommodates the mold inside and can be vacuum-sealed, a plurality of injection nozzles that are movably arranged in the injection tank to inject resin into the mold, and inside the mixing tank A resin introduction path that introduces the generated resin into the injection tank through a filter and supplies it to the injection nozzle, and a plurality of cleaning devices that are arranged on one side so that they can be connected to each injection nozzle at a predetermined position in the injection tank. It has a nozzle and the other side is connected to the introduction port of the resin introduction path, and is provided with a flow path cleaning means for cleaning the inside of the flow path by flowing a cleaning solvent from one to the other.

Further, according to a seventh aspect of the present invention, in the resin injection apparatus according to the sixth aspect, the cleaning solvent is flown from the resin introducing passage side to perform the primary cleaning, and then the cleaning solvent is flown from the cleaning nozzle side. Secondary cleaning is performed.

Further, in the resin injecting apparatus according to the eighth aspect of the present invention, the resin is produced by stirring and mixing the main component, the curing agent, the filler and the additive by the rotation of the blade and heating by the heating source. A mixing tank, an injection tank that accommodates the mold inside and can be vacuum-sealed, a plurality of injection nozzles that are movably arranged in the injection tank to inject resin into the mold, and inside the mixing tank A resin introduction path that introduces the generated resin into the injection tank through a filter and supplies it to the injection nozzle, and a plurality of cleaning devices that are arranged on one side so that they can be connected to each injection nozzle at a predetermined position in the injection tank. A first flow passage cleaning means having a nozzle and the other connected to the introduction port of the resin introduction passage for washing the inside of the flow passage by flowing a washing solvent from one to the other; To the other Respectively to the mixing tank is connected, in which a second flow path cleaning means for cleaning the flow path by flowing a cleaning solvent from either one to the other.

Further, a resin injection device according to a ninth aspect of the present invention is the resin injection device according to any one of the fifth, sixth and eighth aspects, in which a plurality of mixing tanks are connected in parallel.

Further, a resin injecting apparatus according to a tenth aspect of the present invention is the resin injecting apparatus according to any one of the fifth, sixth and eighth aspects, in which the filter is arranged outside the injecting tank.

The resin injecting device according to an eleventh aspect of the present invention is the resin injecting device according to any one of the fifth, sixth and eighth aspects, in which the temperature of the resin is detected by a thermocouple embedded in the rotary drive shaft of the blade. The heating source is controlled.

According to a twelfth aspect of the present invention, in the resin injection device according to any one of the fifth, sixth and eighth aspects, air is introduced into the mixing tank inside of the sealing portion of the rotary drive shaft of the blade. It is the one.

Further, in a resin injection device according to a thirteenth aspect of the present invention, in any one of the fifth, sixth and eighth aspects, a projection is formed on a surface of the injection nozzle corresponding to the cleaning nozzle so as to surround the flow path. It was done.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a sectional view showing a schematic configuration of a resin injection device according to Embodiment 1 of the present invention, and FIG. 2 is a piping diagram showing a configuration of a flow path cleaning means of the resin injection device in FIG.
3 is a cross-sectional view showing in detail the configuration of the mixing tank portion in FIG. 1, FIG. 4 is a side view showing the configuration taken along line IV-IV in FIG. 1, and FIG. 5 is a line V-V in FIG. FIG. 6 is a plan view showing the configuration viewed along, and FIG. 6 is a sectional view showing the tip shape of the injection nozzle portion.

In the figure, 6 is an injection tank capable of vacuum sealing, 7 is hermetically provided on the top of the injection tank 6, and is heated by a warm air generator 8 and maintained at about 130.degree. A tank 9 is a filter tank arranged in the heating tank 8, and a filter 10 is housed inside. Reference numerals 11 and 12 are a pair of mixing tanks arranged at the upper portion of the heating tank 7 and the lower portions thereof are connected to the upper portions of the filter tanks 9 via valves 13 and 14, respectively, as shown in detail in FIG. It is configured.

That is, 15 is a valve 13 and 14 at the bottom.
A main body tank having a discharge port 15a connected to the filter tank 9 through 16, a heater wound around the outer wall of the main body tank 15, 17 a cover plate covering the upper part of the main body tank 15, and 18 a cover plate Bearings provided through 17
Reference numeral 19 denotes a rotary drive shaft supported by the bearing 18, 2
0 is a motor connected to the upper end of the rotary drive shaft 19, 2
Reference numeral 1 denotes a stirring blade including a shaft portion 21a connected to the lower end of the rotary drive shaft 19 and a blade portion 21b fixed around the shaft portion 21a.

Reference numeral 22 denotes a sealing portion that seals between the bearing 18 and the rotary drive shaft 19, and has a recess 22a formed inside the main body tank 15. Reference numeral 23 is an air source communicating with the inside of the recess 22a of the sealing portion 22 via the valve 24, 25 is a thermocouple inserted through the rotary drive shaft 19 and the shaft portion 21a of the stirring blade 21, and 26 is one end. Slip ring 27
A current collecting brush electrically connected to the terminal lead of the thermocouple 25 through the other end, and the other end thereof is connected to an external temperature control device (not shown). 28 is provided on the lid plate 17 and is a valve 29
The exhaust port 30 is opened and closed by, and the material supply port 30 is opened and closed by the valve 31 provided on the cover plate 17. Although not shown in FIG. 3, the cover plate 17 is provided with a pipe 34 via valves 32 and 33 as shown in FIG.

Reference numeral 35 denotes a roller conveyor arranged in the lower part of the injection tank 6, 36 denotes a plurality of molds accommodated on the roller conveyor 35 in the injection tank 6, and 37 denotes a lower part of the roller conveyor 35. The mold 36 is heated to about 100 ° C. by the steam flowing inside the steam piping. 38 and 39 are a pair of guide rails fixedly provided on both inner walls of the injection tank 6, and 40 is both guide rails 3 at both ends.
8 and 39 are slidably arranged and a pipe 40 is provided inside.
In the first communication fitting in which a is formed, the nut fitting 43 that is screwed into the screw shaft 42 that is rotationally driven by the motor 41 is fixed to the upper portion, and when the screw shaft 42 is rotated by the drive of the motor 41. As the nut fitting 43 moves, it moves along the guide rails 38 and 39 in the directions of arrows a and b shown in FIG.

Reference numeral 44 denotes a plurality of injection nozzles which are arranged at predetermined positions below the first communication fitting 40 and are connected to the conduit 40a in the first communication fitting 40 through the butterfly valve 45. As shown in FIG. 6, a protrusion 44b is formed on a surface facing a cleaning nozzle described later so as to surround the injection port 44a. Reference numeral 46 denotes a second communication fitting in which a conduit 46a is formed, and is connected to the conduit 46a at the same position as the injection nozzle 44 arranged in the first communication fitting 40 at a predetermined upper position. A plurality of cleaning nozzles 47 are provided, and a seal member 48 is attached to the surface of the cleaning nozzle 47 facing the injection nozzle 44, as shown in FIG.

Numeral 49 holds the second communication fitting 46 at a position where it does not interfere with the respective molds 36 accommodated therein, and is driven to move in the directions indicated by arrows c and d in FIG. 4 through the guide frame 50. The air cylinder 51 is a pipe for communicating the pipe 46a of the second communication fitting 46 with the outside, 52 is a pipe for communicating the inside of the filter tank 9 with the outside, and 53 and 54 are pipes inside. 53
a and 54a are formed on the third and fourth communication fittings, 5
5 is between the lower portion of the filter tank 9 and one end of the third communication fitting 53, between the other end of the third communication fitting 53 and one end of the fourth communication fitting 54, and between the fourth communication fitting 54. A plurality of rotary joints respectively interposed between the other end and one end of the first communication fitting 40, the lower part of the filter 9, both pipe lines 53a,
54a and the pipe 40a are rotatably connected. Then, the resin introducing passage 1 is formed by the respective pipe passages 40a, 53a, 54a.
01.

Reference numeral 56 is a primary cleaning solvent tank filled with a primary cleaning solvent 57, 58 is a secondary cleaning solvent tank filled with a secondary cleaning solvent 59, and 60 is a pipe connected as shown in FIG. Roads 61 and 62 are both cleaning solvent tanks 56 and 58.
A discharge valve connected to the lower part of the cleaning system for discharging both cleaning solvents 57 and 59, 63 is a pump connected to a part of the pipe 60 for flowing the cleaning solvent, and 64 and 65 are both cleaning solvents 57 and 59. Derivation valves for discharging from the tanks 56 and 58 into the pipe 60, 67 and 69 recovery valves for recovering the cleaning solvents 57 and 59 from the conduit 60 into the cleaning solvent tanks 56 and 58, Reference numerals 70 to 74 are switching valves that are respectively connected to predetermined positions of the pipeline 60 and switch the system of the pipeline 60.

Next, the operation of the resin injection device according to the first embodiment configured as described above will be described. First, when resin is produced, for example, one mixing tank 1
Close the valve 13 on the first side and open the valve 31
A main agent, a curing agent, a filler, and an additive necessary for producing a desired resin are charged into the mixing tank 11 from the material supply port 30. Then, while the heater 16 wound around the outer wall of the main body tank 15 is heating, the stirring blade 21 is rotated to perform stirring and mixing.

During this time, the temperature of the resin is detected by the thermocouple 25 inserted through the shaft portion 21a, and
The temperature is input from the current collecting brush 26 to an external temperature control device via the slip ring 27, and the temperature control device controls the capacity of the heater 16 to obtain a desired temperature, for example, 130 ° C.
Is held. When it is confirmed that the stirring and mixing is sufficient, the rotation of the stirring blade 21 is stopped, the valves 13 and 29 are opened, and the resin in the mixing tank 11 is transferred into the filter tank 9. When the required amount of resin exceeds the processing capacity of the mixing tank 11, the other mixing tank 12 may be used together to make up for the deficiency.

On the other hand, while the resin is being produced in the mixing tank 11 as described above, each mold 36 is carried into the pouring tank 6 and set in a predetermined position by the roller conveyor 35. 6 is sealed and the inside is decompressed to be in a vacuum state. Then, each die 36 is heated to near 100 ° C. by the steam flowing in the steam pipe 37 arranged below the roller conveyor 35. Next, the motor 41 is driven to rotate the screw shaft 42, thereby moving the first communication fitting 40 through the nut fitting 43 in the direction shown by the arrow A or B in FIG.
The position of is matched with the position of the injection port of each mold 36.

Next, in this state, the butterfly valve 45 of the injection nozzle 44 arranged at a position facing each mold 36.
When opened, the resin transferred from the mixing tank 11 into the filter tank 9 and heated by the hot air generator 8 in the heating tank 7 and maintained at 130 ° C. is passed through the rotary joint 55 to the third position. Through the conduit 53a of the communication fitting 53 and the conduit 54a of the fourth communication fitting 54, flowed into the conduit 40a of the first communication fitting 40, and were arranged downward from each injection nozzle 44 by natural fall. It is poured into the mold 36. Then, when a predetermined amount of resin is injected into each mold 36, each butterfly valve 45 is closed, the sealing of the injection tank 6 is released to release the inside of the injection tank 6 to the atmosphere, and then the mold 36 is opened. It is carried out from the injection tank 6 to the outside, and the injection work is completed. In the above description, the injection of the resin from each injection nozzle 44 was performed simultaneously, but it goes without saying that the operation may be performed separately by shifting the operation timing of the butterfly valve 45.

When the resin injection for all the molds 36 is completed, a cleaning operation for removing the resin remaining in the pipe is performed. The cleaning work will be described below.
First, by driving the motor 41 to rotate the screw shaft 42, the first communication fitting 4 is connected via the nut fitting 43.
0 in the direction indicated by the arrow a in FIG. 4 to move the position of each injection nozzle 44 to each cleaning nozzle 47 of the second communication fitting 46.
To match the position. Then, by driving the air cylinder 49, the second communication fitting 46 is moved in the direction indicated by the arrow C in FIG.
Is moved along the guide frame 50, and the injection nozzle 4
The cleaning nozzle 47 is brought into contact with the nozzle 4. At this time, since the seal member 48 is attached to the contact surface of the cleaning nozzle 47 as shown in FIG. 6, the space between both contact surfaces is completely sealed.

The second channel cleaning means 102 is used for cleaning.
The inside of the mixing tank 11 by means of the first flow path cleaning means 103, the primary cleaning by which the cleaning solvent flows from the filter tank 9 side to the second communication fitting 46 side by the first flow path cleaning means 103, and conversely from the second communication fitting 46 side. There is cleaning that is a secondary cleaning in which a cleaning solvent is flown to the filter tank 9 side. First, in the case of cleaning the inside of the mixing tank 11, each injection nozzle 44 and each cleaning nozzle 4
7 contact each other, both valves 13 and 32, each butterfly valve 45, both derivation valves 64 and 65, and each recovery valve 66 to.
69, the switching valves 70 to 74 are closed, and the derivation valve 64, the switching valve 72 and the valve 32 are opened, the valve 29 of the exhaust port 28 of the mixing tank 11 is opened, and the pump 63 is driven.

Then, the primary cleaning solvent 57 in the primary cleaning solvent tank 56 is discharged to the outlet valve 64 and the switching valve 72.
After flowing through the pipe line 60 via the
2 and flows into the mixing tank 11. Then, when the predetermined amount of the primary cleaning solvent 57 is stored in the mixing tank 11, the derivation valve 64, the switching valve 72 and the valve 32.
Is closed and the pump 63 is stopped. The above description is for the case where the primary cleaning solvent 57 is supplied from the upper portion, but next, the case where it is supplied from the lower portion will be described.

First, from the above-mentioned starting state, after opening the valve 29 of the exhaust port 28 of the mixing tank 11, the outlet valve 64, the switching valve 74, each butterfly valve 45 and the valve 13 are opened, and the pump 63 is driven. Then
The primary cleaning solvent 57 in the primary cleaning solvent tank 56 flows through the conduit 60 via the outlet valve 64 and the switching valve 74, and then from the pipe 51 to the conduit 46 of the second communication fitting 46.
a into each cleaning nozzle 47, each injection nozzle 44,
Each butterfly valve 45, the conduit 4 of the first communication fitting 40
0a, each rotary joint 55, the pipe 54 of the fourth communication fitting 54
a, the pipe 53 a of the third communication fitting 53 and the filter tank 9, and then flows into the mixing tank 11 via the valve 13. Then, the primary cleaning solvent 5 is placed in the mixing tank 11.
When 7 is accumulated by a predetermined amount, the outlet valve 64, the switching valve 74, the butterfly valves 45 and the valve 13 are closed and the pump 63 is stopped.

As described above, 1 is put in the mixing tank 11.
When the secondary cleaning solvent 57 is stored, the stirring blade 21 is rotated to stir the primary cleaning solvent 57. Then, the resin remaining on the inner wall of the mixing tank 11 and the stirring blade 21 is peeled off and washed. When the valve 24 is opened and air is supplied from the air source 23 while the cleaning work is being performed, the air is supplied to the recess 22a of the sealing portion 22.
A space is formed therein to prevent the primary cleaning solvent 57 from entering the sealing portion 22.

When the cleaning is completed, the valve 29, the valve 13, each butterfly valve 45, the switching valve 73 and the recovery valve 67 of the exhaust port 28 of the mixing tank 11 are opened, and the primary cleaning solvent 57 in the mixing tank 11 is loaded by its own weight. , The filter tank 9, the rotary joints 55, the conduit 53a of the third communication fitting 53, the conduit 54a of the fourth communication fitting 54, the conduit 40a of the first communication fitting 40, the injection nozzles 44, the cleanings. Nozzle 47, pipe line 46a of second communication fitting 46, pipe 5
1, the switching valve 73 and the recovery valve 67 are connected in this order through the pipe line 60, and returned to the primary cleaning solvent tank 56 for recovery. Regarding the secondary cleaning, a derivation valve 65 is used instead of the derivation valve 64 in the above-mentioned primary cleaning.
Further, the description will be omitted because only the recovery valves 68 are operated instead of the recovery valves 67.

Next, the primary cleaning performed by flowing the cleaning solvent from the filter tank 9 side to the second communication fitting 46 side will be described. First, from the above-mentioned starting state, the outlet valve 6
4, the switching valves 72, 70, 73, the butterfly valves 45 and the recovery valve 67 are opened to drive the pump 63. Then, the primary cleaning solvent 57 in the primary cleaning solvent tank 56 is discharged to the outlet valve 64 and the switching valves 72 and 70.
After flowing into the filter tank 9 through the pipe 52 and passing through the filter 10, each rotary joint 55, the pipe 53a of the third communication fitting 53, the fourth
54a of the communication fitting 54, the conduit 40a of the first communication fitting 40, each injection nozzle 44, each cleaning nozzle 47, the second
46a of the communication metal fitting 46, the pipe 51, the switching valve 7
3 and the recovery valve 67 are connected to the pipe line 10 in this order, and returned to and recovered in the primary cleaning solvent tank 56.

On the other hand, in the secondary cleaning performed by flowing the cleaning solvent from the second communication fitting 46 side to the filter tank 9 side, first,
From the above-mentioned starting state, the derivation valve 65, the switching valves 74, 70, 71, the butterfly valves 45, and the recovery valve 69 are opened, and the pump 63 is driven. Then
The secondary cleaning solvent 59 in the secondary cleaning solvent tank 58 has a conduit 60 to which the outlet valve 65 and the switching valve 74 are connected.
From the conduit 46 of the second communication fitting 46 via the pipe 51.
a into each cleaning nozzle 47, each injection nozzle 44,
Each butterfly valve 45, the conduit 4 of the first communication fitting 40
0a, each rotary joint 55, the pipe 54 of the fourth communication fitting 54
a, then the conduit 53a of the third communication fitting 53, flows into the filter tank 9, flows through the filter 10, passes through the filter 10, and is connected to the pipe 52, the switching valves 70 and 71, and the recovery valve 69. It is returned to and collected in the secondary cleaning solvent tank 58 via.

When each cleaning is completed as described above, the valve 13, each butterfly valve 45, each switching valve 7
Open 0, 71, 73 and both recovery valves 67, 69,
By supplying air from the mixing tank 11 side, the vaporization of the cleaning solvent in the pipelines is promoted and the impurities and cleaning solvents remaining in the pipelines are blown off and collected in the primary and secondary cleaning solvent tanks 56 and 58. And complete all the work. In addition,
Since the filter 10 is clogged after being used several times, the lid (not shown) of the filter tank 9 is opened and replaced every time the resin is injected several times. In the first embodiment, the case where only one mixing tank 11 is used has been described, but it goes without saying that two mixing tanks 12 may be appropriately used together.

As described above, according to the first embodiment, the first tank in which the plurality of injection nozzles 44 are arranged in the injection tank 6 is provided.
Of the plurality of communication fittings 40 are provided, and the third and fourth communication fittings 53 and 54 rotatably connected to each other via the rotary joint 55 are movable along the guide rails 38 and 39. It is possible to deal with the mold 36, and the workability is improved. Further, since the steam pipe 37 is arranged at the bottom of the injection tank 6 and the steam is allowed to flow inside the steam pipe 37, the mold 36 is heated to around 100 ° C. It becomes possible to perform casting with stable quality, and by disposing the steam pipe 37 at the bottom, work in the injection tank 6 is not disturbed at all and it is easy to secure a working space.

After the injection of the resin is completed, the first communication fitting 40 is moved to a position where each injection nozzle 44 corresponds to each cleaning nozzle 47 of the second communication fitting 46, and the second cylinder is operated by the air cylinder 49. The communication fitting 46 of the first communication fitting 46
By moving the cleaning nozzles 47 to the injection nozzles 44, the cleaning nozzles 47 are brought into contact with the injection nozzles 44, and the sealing members 46 are provided to seal the cleaning nozzles 47.
To the filter tank 9 side from the second communicating metal fitting 46 side to the primary cleaning solvent 57 for cleaning.
Since the secondary cleaning is performed by flowing the secondary cleaning solvent 59, the inside of the pipeline can be efficiently cleaned in a short time, and the productivity can be improved. it can. Further, as shown in FIG. 6 (A), a projection 44b is provided on the surface of the injection nozzle 44 facing the cleaning nozzle 47 so as to surround the injection port 44a.
As shown in FIG. 5, the residual resin is adhered only to the tip of the protrusion 44b, so that the resin is reliably removed by the cleaning solvent, and the resin does not enter between the nozzles 44 and 47. Can be held at.

Further, since the mixing tanks 11 and 12 are connected in parallel, if it is impossible to generate the required amount of resin with one unit in terms of capacity, it is possible to operate two units at the same time. At the same time, if the resin produced in one mixing tank 11 is being injected and the cleaning operation is performed, the different resin is produced in the other mixing tank 12.
It is possible to continuously cast different resins, which improves productivity.

Further, since the filter 10 is arranged outside the filling tank 6, the replacement work of the filter 10, which has to be performed quite frequently, can be performed without entering the filling tank 6 and the working efficiency is improved. Greatly improved.

Further, since the thermocouple 25 is inserted in the shaft portion 21b of the stirring blade 21 so that the temperature of the resin in the mixing tanks 11 and 12 can be continuously measured, it is possible to perform the casting with stable quality. become.

Furthermore, the air source 2 is provided in the recess 22a of the sealing portion 22 arranged between the bearing 18 and the rotary drive shaft 19.
Since air is supplied from 3 and sprayed, it becomes possible to prevent the cleaning solvent from entering the sealing portion and deteriorating.

[0047]

As described above, according to the first aspect of the present invention, an injection tank in which a mold is housed and capable of being vacuum-sealed, and a resin which is disposed in the injection tank and is injected into the mold. Since it is provided with a plurality of injection nozzles for doing so, it is possible to provide a resin injection device capable of handling a plurality of molds and improving workability.

According to the second aspect of the present invention, in the first aspect, the respective injection nozzles can be moved according to the installation position of the mold, so that the workability can be further improved. An injection device can be provided.

According to the third aspect of the present invention, in the first aspect, the inside of the injection tank can be heated, so that the resin flow at the time of injection can be improved and the resin with stable quality can be cast. An injection device can be provided.

According to the fourth aspect of the present invention, in the third aspect, the heating is performed by the steam flowing through the pipe arranged in the floor portion, so that the casting with stable quality can be performed. It is of course possible to provide a resin injection device that can secure a working space in the injection tank.

According to claim 5 of the present invention, the main agent,
A mixing tank that stirs and mixes the curing agent, the filler, and the additive by rotating the blades and also generates a resin by heating with a heating source, and an injection tank that accommodates a mold inside and can be vacuum-sealed. , A plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank is introduced into the injection tank through a filter and supplied to the injection nozzle. Since the resin injection path is provided, it is possible to provide a resin injection device capable of further improving workability.

According to claim 6 of the present invention, the main agent,
A mixing tank that stirs and mixes the curing agent, the filler, and the additive by rotating the blades and also generates a resin by heating with a heating source, and an injection tank that accommodates a mold inside and can be vacuum-sealed. , A plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank is introduced into the injection tank through a filter and supplied to the injection nozzle. It has a resin introducing passage and a plurality of cleaning nozzles which are arranged so as to be connectable to respective injecting nozzles at a predetermined position in the injecting tank on one side and the other is connected to an introducing port of the resin introducing passage, and from either one of them. On the other hand, since the flow path cleaning means for cleaning the inside of the flow path is provided by flowing the cleaning solvent, the resin injection capable of efficiently cleaning the inside of the pipeline for a short time and improving the productivity. apparatus It is possible to provide.

According to a seventh aspect of the present invention, in the sixth aspect, the cleaning solvent is flown from the resin introduction passage side to perform the primary cleaning, and conversely, the cleaning solvent is flown from the cleaning nozzle side to the secondary cleaning. Therefore, it is possible to provide the resin injecting device capable of efficiently cleaning the inside of the pipeline in a short time and improving the productivity.

According to claim 8 of the present invention, the main agent,
A mixing tank that stirs and mixes the curing agent, the filler, and the additive by rotating the blades and also generates a resin by heating with a heating source; and an injection tank that accommodates a mold inside and can be vacuum-sealed. , A plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank is introduced into the injection tank through a filter and supplied to the injection nozzle. It has a resin introducing passage and a plurality of cleaning nozzles which are arranged so as to be connectable to respective injecting nozzles at a predetermined position in the injecting tank on one side and the other is connected to an introducing port of the resin introducing passage, and from either one of them. A first flow path cleaning means for cleaning the inside of the flow path by flowing a cleaning solvent to the other, one is connected to the inlet of the introduction path and the other is connected to the mixing tank, and the cleaning solvent from either one to the other Since the second channel cleaning means for cleaning the inside of the channel by flowing is provided, a resin injecting device capable of efficiently cleaning the inside of the channel in a short time and improving the productivity is provided. Can be provided.

According to claim 9 of the present invention, in any one of claims 5, 6, and 8, since a plurality of mixing tanks are connected in parallel, the inside of the pipeline can be efficiently cleaned in a short time. It is, of course, possible to improve the productivity, and it is possible to provide a resin injection device capable of continuously casting different resins.

According to the tenth aspect of the present invention, in any one of the fifth, sixth and eighth aspects, since the filter is disposed outside the injection tank, the filter replacement work can be performed without entering the injection tank. As a result, it is possible to provide a resin injection device capable of improving workability.

According to an eleventh aspect of the present invention, in any one of the fifth, sixth, and eighth aspects, the thermocouple embedded in the rotary drive shaft of the blade detects the temperature of the resin to turn on the heating source. Since it is controlled, it is possible to provide a resin injection device capable of stable quality casting.

According to a twelfth aspect of the present invention, in any one of the fifth, sixth and eighth aspects, air is introduced into the mixing tank inside of the sealing portion of the rotary drive shaft of the blade. It is possible to provide a resin injection device capable of preventing deterioration of the sealing portion due to invasion of the cleaning solvent.

According to the thirteenth aspect of the present invention, in any one of the fifth, sixth and eighth aspects, the projection is formed on the surface of the injection nozzle corresponding to the cleaning nozzle so as to surround the flow path. It is possible to provide a resin injecting device in which the resin is left only on the tips of the protrusions and the airtightness of the contact surface between the injecting nozzle and the cleaning nozzle can be maintained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a resin injection device according to a first embodiment of the present invention.

FIG. 2 is a piping diagram showing a configuration of a flow path cleaning means of the resin injection device in FIG.

FIG. 3 is a cross-sectional view showing in detail the configuration of a mixing tank unit in FIG.

FIG. 4 is a side view showing the configuration taken along line IV-IV in FIG.

5 is a plan view showing the configuration as viewed along the line VV in FIG. 1. FIG.

6A is a sectional view showing the shape of an injection nozzle, and FIG. 6B is a sectional view showing the contact state of the injection nozzle with the cleaning nozzle.

FIG. 7 is a cross-sectional view showing a configuration of a conventional resin injection device.

[Explanation of symbols]

6 injection tanks, 9 filter tanks, 10 filters, 11 and 12 mixing tanks, 13 and 14 valves, 1
6 heater, 19 rotary drive shaft, 21 stirring blades, 22
Sealing part, 22a hollow part, 23 air source, 25 thermocouple, 30 material supply port, 36 mold, 37 steam piping, 40 first communication fitting, 40a, 46a, 53a,
54a pipe line, 42 screw shaft, 43 nut fitting, 44
Injection nozzle, 44b protrusion, 45 butterfly valve, 46 second communication fitting, 47 cleaning nozzle, 49
Air cylinder, 53 Third communication fitting, 54 Fourth communication fitting, 55 Rotary joint, 101 Resin introduction path, 102
Second flow path cleaning means, 103 First flow path cleaning means.

Front Page Continuation (72) Inventor Manabu Taki Marunouchi 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Inventor Fumihiro Uesugi 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. In the company

Claims (13)

[Claims] 1. An injection tank having a mold housed therein and capable of vacuum sealing, and a plurality of injection nozzles arranged in the injection tank for injecting a resin into the mold. Characteristic resin injection device. 2. The resin injection device according to claim 1, wherein each of the injection nozzles is movable according to the installation position of the mold. 3. The resin injection apparatus according to claim 1, wherein the inside of the injection tank can be heated. 4. The resin injection device according to claim 3, wherein the heating is performed by steam flowing in a pipe arranged in the floor. 5. A mixing tank for producing a resin by stirring and mixing a main agent, a curing agent, a filler and an additive by rotating a blade and heating with a heating source, and a vacuum mold containing a mold inside. Stopable injection tank, a plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank through a filter And a resin introducing passage for introducing the resin into the injecting tank and supplying the resin to the injecting nozzle. 6. A mixing tank for producing a resin by stirring and mixing a main agent, a curing agent, a filler and an additive with the rotation of a blade and heating by a heating source, and a metal mold is housed inside and vacuum sealed. Stopable injection tank, a plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank through a filter And a resin introduction path which is introduced into the injection tank and is supplied to the injection nozzle,
One has a plurality of cleaning nozzles arranged to be connectable to each injection nozzle at a predetermined position in the injection tank, and the other is connected to the introduction port of the resin introduction passage, and the cleaning solvent from one to the other. A resin injecting device, comprising: a flow path cleaning means for cleaning the inside of the flow path by flowing a liquid. 7. The cleaning solvent according to claim 6, wherein the cleaning solvent is flown from the resin introducing passage side to perform the primary cleaning, and then the cleaning solvent is flown from the cleaning nozzle side to perform the secondary cleaning. Resin injection device. 8. A mixing tank for producing a resin by stirring and mixing a main agent, a curing agent, a filler and an additive with the rotation of a blade and heating by a heating source, and a metal mold is housed inside and vacuum sealed. Stopable injection tank, a plurality of injection nozzles movably arranged in the injection tank for injecting the resin into the mold, and the resin generated in the mixing tank through a filter And a resin introduction path which is introduced into the injection tank and is supplied to the injection nozzle,
One has a plurality of cleaning nozzles arranged to be connectable to each injection nozzle at a predetermined position in the injection tank, and the other is connected to the introduction port of the resin introduction passage, and the cleaning solvent from one to the other. A first flow path cleaning means for cleaning the inside of the flow path by flowing a flow path, one of which is connected to the introduction port of the introduction path and the other of which is connected to the mixing tank. A resin injection device comprising: a second flow path cleaning means for cleaning the inside of the flow path. 9. The resin injection device according to claim 5, wherein a plurality of mixing tanks are connected in parallel. 10. The resin injection device according to claim 5, wherein the filter is provided outside the injection tank. 11. The resin injection according to claim 5, wherein the thermocouple embedded in the rotary drive shaft of the blade detects the temperature of the resin to control the heating source. apparatus. 12. The resin injecting device according to claim 5, wherein air is introduced into the inside of the mixing tank of the sealing portion of the rotary drive shaft of the blade. 13. The resin injection device according to claim 5, wherein a projection is formed on a surface of the injection nozzle corresponding to the cleaning nozzle so as to surround the flow path.