JP2016043508A - Fine two-liquid mixing injection machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fine two-liquid mixing injection machine without using a gear pump which is bitten by a filler or allows a gear to be easily worn.SOLUTION: Means 2, 2a which supply two kinds of chemicals are arranged freely horizontally reciprocation-movably on both side parts of a head part 1, a rotary mixer 3 is mounted on a lower part of the head part 1, a driving motor 4 of the rotary mixer 3 is arranged on an upper part of the head part 1, chemical supply means 2, 2a include vertical screw pumps 17, 17a, chemical containers 18, 18a attached to the vertical screw pump, channel forming bodies 19, 19a arranged on a lower part of the vertical screw pump and mixing heads 8, 8a mounted on inside parts of the channel forming bodies, the mixing heads are fitted into receiving ports formed of openings on both sides of the rotary mixer 3 and, thereby, two kinds of chemicals can be supplied. A fine two-liquid mixing injection machine in which the biting of filler and wear of inner components are suppressed by using the vertical screw pumps 17, 17a is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a two-component mixed injection machine for a minute amount that mixes and discharges two kinds of minute amounts of chemicals in casting, molding, painting, and the like.

  Conventionally, the applicant of the present application has provided a mounting portion of a static mixer on a base of an injection machine, movably mounted a pair of flow path forming bodies having a mixing head on the base, and advancing and retreating the mixing head to and from the mounting portion. A pair of flow path forming bodies, which are provided with a mechanism part and are mounted on the base body so as to be able to move forward and backward, are mounted facing the mounting part, and the mixing head has a two-component mixed curable resin injection machine with a tapered diameter at the tip. A plurality of developments have been filed (for example, see Patent Document 1). The main object of this application is to facilitate post-processing such as cleaning after the completion of the injection operation.

  However, in the two-liquid mixing type injector of Patent Document 1, only the flow path forming bodies 19 and 19a having the mixing heads 15 and 15a reciprocate, and the upstream side of the flow path forming bodies 19 and 19a. Does not reciprocate. Specifically, as shown in [0037] of Patent Document 1 and FIGS. 1 to 3, the supply valves 5 and 5a and the flow path forming bodies 19 and 19a of the injector 1 are provided. The mounting portions 27 and 27a, which are chemical solution supply ports, are connected in communication with connection pipes 71 and 71a, and the pair of supply valves 5 and 5a are respectively connected to the chemical solution supply pipes 72 and 72a and a gear pump having a quantitative supply function, Compressed air supply pipes 73 and 73a for opening and closing the supply valves 5 and 5a provided with pressure pumps such as a plunger pump and a diaphragm pump are connected, respectively, and the chemical solution is connected to the supply pipes 5 and 5a with the pressure pumps 71 and 71a. The two types of chemical solutions are delivered from the chemical solution container. The liquid supply pipes 72 and 72a, the supply valves 5 and 5a, the connection pipes 71 and 71a are passed through the flow path forming bodies 19 and 19a, and supplied from the mixing heads 15 and 15a into the static mixer 3.

  In other words, in the two-liquid mixing type injector of Patent Document 1, since the flow path forming bodies 19 and 19a are in a movable state, the supply valves 5 and 5a are in a fixed state. 71a is required, and the entire flow path becomes long, resulting in a large pressure loss during passage. As a result, the supply amount is very small but an error is likely to occur. It was unsuitable as a two-component mixing type injection machine for the purpose of making it.

  Therefore, the applicant of the present application arranges two types of chemical solution supply means on both sides of the head part so as to be able to move forward and backward so as to be opposed to and separate from the head part, and a rotary mixer is provided below the head part. The chemical solution supply means is disposed on the upper surface of the flow path forming body, the mixing head that fits into the reception opening, the flow path forming body, and the flow path forming body. A chemical liquid container and a gear pump; a drive motor for the gear pump; a linear first flow path that communicates the chemical liquid container and the inflow port of the gear pump with the flow path forming body; and an outflow port of the gear pump. By forming a linear second flow path for communicating the mixing head, a chemical liquid container, a flow path forming body that forms a flow path from the chemical liquid container to the mixing head, and the chemical liquid container to the mixing head By combining the gear pump and the drive motor, which are the chemical liquid feeding means, as one chemical liquid supply means, a short linear flow path without pressure loss is formed without a flexible pipe, We have developed a two-component mixed injection machine for trace use that can be used for micromixing and injection (see, for example, Patent Document 2).

Japanese Patent No. 2750664 Utility Model Registration No. 3178116

  However, a micro or nano-sized substance called a filler may be mixed into the synthetic resin for various purposes. However, in the two-component mixing injector for a small amount of Patent Document 2, the feeding means is a gear pump. For this reason, if the filler is large, the gear bites into the gear or the gear wears out. Thus, there is a problem that must be solved, such as being incapable of being handled by the two-component mixing injector for trace amounts.

  The present invention is based on the above-described prior art, and in view of the problem that the gear pump cannot handle the synthetic resin mixed with filler, the head portion and the horizontal reciprocating so as to be able to contact with and separate from the head portion while facing both sides of the head portion. A means for supplying two kinds of chemical solutions movably arranged, a rotary mixer detachably attached to the lower part of the head part, and a drive motor for the rotary mixer arranged on the upper part of the head part. The upper end of the drive shaft inserted into the through-portion formed vertically through the head portion is connected to the drive motor, and the lower end protrudes downward from the lower portion of the head portion, and is rotated into the rotary mixer. Fixed to a movably contained Mixing Groter, the chemical supply means includes a vertical screw pump, a chemical solution container attached to the vertical screw pump, A flow path forming body disposed in a lower portion of the vertical screw pump, and a mixing head mounted on an inner side of the flow path forming body, and the flow of the vertical screw pump in the flow path forming body. A flow path for communicating the outlet and the mixing head; and the rotary mixer has openings on both sides into which the mixing head can be fitted, and the upper part of the receiving space and the upper space of the mixing grower. By forming a flow path that communicates with each other and feeding the chemical solution from the chemical solution container into the rotary mixer by the vertical screw pump, it is possible to suppress the biting of the filler inside and the wear of the internal parts due to the filler. Solve the above problems.

  In short, the present invention comprises a head part, means for supplying two kinds of chemical solutions arranged in a reciprocating and horizontally movable manner so as to be able to contact and separate from the head part in a state of being opposed to both sides of the head part, A rotary mixer that is detachably attached to the lower part, and a drive motor for the rotary mixer that is arranged on the upper part of the head part. The upper end is connected to the drive motor, the lower end protrudes downward from the lower part of the head part, and is fixed to a mixing rotator that is rotatably accommodated in the rotary mixer. A pump, a chemical container attached to the vertical screw pump, a flow path forming body disposed in a lower portion of the vertical screw pump, and an inner portion of the flow path forming body A mixing head that is attached, and a flow path that connects the outlet of the vertical screw pump and the mixing head to the flow path forming body is formed, and the rotary mixer can be fitted with the mixing head Since the receiving opening is formed on both sides and a flow path is formed to connect the receiving opening and the upper part of the mixing space of the Mixing Groter, the chemical solution in the chemical container is formed by a vertical screw pump. Because it can be fed into the rotary mixer from the receiving port through the body, even if filler is mixed, it can suppress the filler biting in the vertical screw pump, regardless of the presence or absence of filler It can be used, and its practical effect is significant.

It is a front view of the two-component mixing injector for a trace amount according to the present invention. It is a top view of FIG. It is a principal part enlarged view of the XX cross section of FIG. FIG. 3 is a Y1-Y1 cross-sectional view of FIG. 2. FIG. 3 is a Y2-Y2 cross-sectional view of FIG. 2. It is a principal part enlarged view of the use condition of the two-component mixed injection machine for traces of FIG. It is a principal part enlarged view of the state which retracted the chemical | medical solution supply of the two component mixing type injection machine for traces of FIG. It is a front view of the state which decomposed | disassembled the two component mixing type injection machine for traces of FIG. It is ZZ expanded sectional drawing of FIG.

An embodiment of the present invention will be described below with reference to the drawings.
In the two-component mixing type injector according to the present invention, basically, the head unit 1 and the both sides of the head unit 1 are opposed to the head unit 1 in a state of being opposed to the head unit 1 so as to be reciprocally movable horizontally. Two means for supplying two kinds of chemical solutions 2 and 2a, a rotary mixer 3 detachably attached to the lower part of the head part 1, and a drive motor 4 of the rotary mixer 3 arranged on the upper part of the head part 1 The upper end of the drive shaft 6 inserted in the through-hole 5 formed vertically through the head portion 1 is connected to the drive motor 4 and the lower end protrudes downward from the lower portion of the head portion 1, thereby rotating the rotary mixer 3. It is inserted in the insertion hole 7a of the mixing glotter 7 accommodated rotatably inside.
Then, the mixing heads 8 and 8a of the chemical solution supply means 2 and 2a are fitted into the receiving ports 9 and 9a formed on both sides of the rotary mixer 3 so that two types of chemical solutions can be supplied into the rotary mixer 3. Yes.

  The head unit 1 includes a substrate 10, a bearing case 11 that vertically penetrates the substrate 10, and a coupling case 12 that is fixed to the upper portion of the bearing case 11. 12, lower portions are formed in the bearing case 11, respectively.

  In addition, bearings 13 and 13a are provided between the upper and lower portions of the bearing case 11 and the drive shaft 6, and the output shaft 4a of the drive motor 4 installed on the upper portion of the coupling case 12 is connected to the tip of the coupling case 12 within the coupling case 12. The drive shaft 6 is connected via the coupling 14.

  The advancing / retreating means 15 of the chemical solution supply means 2 and 2a is disposed behind the head part 1, and the advancing / retreating means 15 is installed on the substrate 10, and the fixed frames 16 and 16a arranged on both sides are brought into contact with and separated from the head part 1. The chemical solution supply means 2 and 2a are installed on the fixed frames 16 and 16a, and the chemical solution supply means 2 and 2a include the vertical screw pumps 17 and 17a and the vertical screw pumps 17 and 17a. Chemical liquid containers 18 and 18a detachably attached to the mold screw pumps 17 and 17a, flow path forming bodies 19 and 19a disposed below the vertical screw pumps 17 and 17a, and the flow path forming bodies 19, The mixing heads 8 and 8a are detachably attached to the inner side of the 19a.

  The fixed frames 16 and 16a include fixed plate portions 20 and 20a and storage cases 21 and 21a at the lower ends of the vertical screw pumps 17 and 17a formed integrally with the front end portions of the fixed plate portions 20 and 20a. The flow path forming bodies 19 and 19a are attached to the lower portions of the housing cases 21 and 21a.

  A chemical supply path 22 is formed on the side of one vertical screw pump 17, and a chemical supply path 22a is formed on the side of the other vertical screw pump 17a. A supply path 23 communicates with the supply paths 22, 22a. , 23a are fixed to the side surfaces of the vertical screw pumps 17 and 17a.

  The supply passages 23 and 23a have outlets at the base end surfaces of the mounting arm rods 24 and 24a, and inlets at the center of the bottom surface of the mounting holes 25 and 25a of the chemical liquid containers 18 and 18a drilled in the upper surfaces of the mounting arm rods 24 and 24a. Open each.

  In the chemical liquid containers 18 and 18a, the insertion portions 27 and 27a having the supply ports 26 and 26a are protruded downward, and the insertion portions 27 and 27a are inserted into the attachment holes 25 and 25a of the attachment arm rods 24 and 24a. The chemical containers 18 and 18a are attached to the attachment arm rods 24 and 24a in a replaceable manner.

  In the flow path forming bodies 19 and 19a, the housing recesses 28 and 28a at the lower ends of the vertical screw pumps 17 and 17a are vertically arranged on the upper surface, and the base end portions of the mixing heads 8 and 8a are fitted on the inner surface. The retractions 29 and 29a are respectively formed horizontally, and hemispherical chemical liquid reservoirs 30 and 30a larger in diameter than the outlets of the vertical screw pumps 17 and 17a are provided in the center of the bottoms of the housing recesses 28 and 28a. The inlets of the flow passages 31 and 31a for communicating the outlets of the screw pumps 17 and 17a with the mixing heads 8 and 8a are opened by the chemical reservoirs 30 and 30a, and the outlets are opened at the center of the bottom of the countersinks 29 and 29a, respectively. .

  The rotary mixer 3 is provided with an injection portion 32 fixed to a lower projecting end portion of the head portion 1 from the substrate 10, a mixing pipe 33 fixed to the lower portion of the injection portion 32, and a rotatable rotation inside the mixing pipe 33. The projecting end portion of the drive shaft 6 is inserted into an insertion hole 7a formed in the center of the upper surface of the mixin grower 7.

  The injection part 32 has the receiving ports 9 and 9a on both sides, the mounting recess 34 of the mixing pipe 33 on the lower surface, and the insertion hole 35 of the drive shaft 6 in the center.

The rotary mixer 3 is formed with flow paths 36 and 36a that allow the receiving ports 9 and 9a to communicate with the upper part of the accommodation space of the mixing heads 8 and 8a. 36 and 36a are continuously formed, and outlets 37 and 37a of the flow paths 36 and 36a are formed on the upper bottom surface of the mounting recess 34 in the injection portion 32 so that two kinds of chemical solutions can be supplied into the rotary mixer 3.
Specifically, one flow path 36 is formed so as to communicate with the insertion hole 35 via a groove 38 formed in the insertion hole 35, and the outlet 37 is a lower opening of the insertion hole 35, and the other flow path is formed. The path 36a is bent in an inverted L shape without communicating with the insertion hole 35.

  In the drawing, the advancing / retreating means 15 is an integrated unit of four rod cylinders, and the left ends of the rods in the two cylinders are fixed to the left fixed frame 16 and the right end penetrates the right fixed frame 16a. The right ends of the rods of the remaining two cylinders are fixed to the right fixed frame 16a and the left end is passed through the left fixed frame 16, but in short, the chemical supply means 2, 2a can be advanced and retracted. If so, there is no limitation to this configuration.

Next, the operation of the two-component mixing injector for a small amount according to the present invention will be described (see FIGS. 4A and 4B).
First, from the unused state as shown in FIG. 5B, the chemical supply means 2 and 2a are advanced by the advance / retreat means 15, that is, the vertical screw pumps 17 and 17a, the chemical liquid containers 18 and 18a, and the flow path formation. All the bodies 19 and 19a are moved to the state shown in FIG. 5A in which the mixing heads 8 and 8a are fitted in the receiving ports 9 and 9a.

  Two types of chemical solutions are supplied from the chemical solution containers 18 and 18a into the vertical screw pumps 17 and 17a, and a predetermined amount of the chemical solution sent from the vertical screw pumps 17 and 17a is supplied into the rotary mixer 3 and merged. The mixing motor 7 is rotated by the drive motor 4, and the combined chemicals are gradually mixed while being moved to the front end side of the rotary mixer 3 by the mixing rotor 7, and curing is started by a chemical reaction, and is discharged from the front end of the rotary mixer 3. .

  At that time, the chemical liquid passes from the chemical liquid containers 18 and 18a through the supply paths 23 and 23a of the mounting arm rods 24 and 24a, and the supply paths 22 and 22a of the vertical screw pumps 17 and 17a, to the vertical screw pump 17, 17a, a predetermined amount of chemical solution is supplied from one vertical screw pump 17 from the outlet 37 through the flow path 31, the mixing head 8, the flow path 36, the groove 38 and the insertion hole 35 of the flow path forming body 19. A predetermined amount of chemical solution is supplied from the other vertical screw pump 17a to the mixing nozzle 3 through the flow path 31a, the mixing head 8a, and the flow path 36a of the flow path forming body 19a and from the outlet 37a. There is almost no pressure loss during the passage, and no filler is caught between the rotor and the stator in the vertical screw pumps 17 and 17a.

  The vertical screw pumps 17 and 17a are rotated backward when one supply is completed, so that no chemical is present in the cavity between the rotor and the stator, so that no valve is used. It is possible to accurately supply a predetermined amount.

DESCRIPTION OF SYMBOLS 1 Head part 2, 2a Chemical solution supply means 3 Rotary mixer 4 Drive motor 5 Penetration part 6 Drive shaft 7 Mixin grower 8, 8a Mixing head 9, 9a Inlet
17, 17a Vertical screw pump
18, 18a Chemical container
19, 19a Channel formation body
31, 31a flow path
36, 36a flow path

Claims (1)

  A head part, means for supplying two types of chemical solutions arranged in a reciprocating and horizontally movable manner so as to be able to contact and separate from the head part in a state of being opposed to both sides of the head part, and detachable to the lower part of the head part A rotary motor mounted on the head portion; and a drive motor for the rotary mixer disposed on an upper portion of the head portion, and the upper end of the drive shaft inserted into a penetrating portion vertically formed in the head portion. And a lower end projecting downward from a lower portion of the head portion and fixed to a mixing grotter rotatably accommodated in the rotary mixer, and the chemical supply means includes a vertical screw pump and the vertical screw pump. Liquid container attached to the mold screw pump, a flow path forming body disposed in the lower part of the vertical screw pump, and a mixin mounted on the inner side of the flow path forming body A flow path that connects the outlet of the vertical screw pump and the mixing head to the flow path forming body, and the rotary mixer has a receiving port on both sides of which the mixing head can be fitted. A two-component mixed-type injection machine for traces, characterized in that an opening is formed in the channel and a flow path is formed to connect the receiving port and the upper part of the accommodation space of the Mixin Groter.

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