JP5961531B2 - Two-component mixing type injection machine - Google Patents

Description

  The present invention relates to a two-component mixing type injector that mixes and discharges two types of chemicals in casting, molding, painting, and the like.

  Conventionally, the applicant of the present application has provided a rotary mixer mounting portion on a base of an injection machine, a pair of flow path forming bodies having a mixing head is movably mounted on the base, and an advancing / retracting mechanism for moving the mixing head back and forth in the mounting portion A pair of flow path forming bodies mounted on the base body so as to be able to move forward and backward are mounted facing the mounting section, and the mixing head is provided with a plurality of two-component mixed curable resin injecting machines each having a tapered diameter at the tip. Since it has been developed and applied (for example, see Patent Document 1), only the flow path forming body reciprocates in the chemical solution supply means, and the upstream side of the flow path forming body does not reciprocate. The body and the upstream supply valve are connected by a flexible connection pipe, and two kinds of chemicals are sent to the connection pipe by a pressure feed pump of the supply valve and passed through the flow path forming body. , Mixing head To be supplied into the rotary mixer.

Japanese Patent No. 2750664

  However, in the above prior art, even if it is possible to supply a fixed amount with the supply valve, it is sent to the flow path forming body side via the connection pipe on the downstream side, so that the downstream side is longer than the supply valve in the chemical solution supply means. Since the connecting pipe swells due to the pressurization, there is a problem to be solved such as a pressure loss when the chemical solution passes.

In view of the problem that pressure loss occurs when a chemical solution passes through the chemical solution supply means based on the above-described conventional technology, the present invention provides a drive unit, a head unit disposed below the drive unit, and a center of the head unit. A mixing shaft that is detachably mounted in a rotary shaft that is rotationally driven by the drive unit and is inserted in a longitudinally formed insertion portion, and a mounting concave portion that is provided in a central portion of the lower surface of the head unit. A two-component mixing type injection machine having a rotary mixer having a rotary mixer connected to the lower end of the rotary shaft, wherein a pair of metering pumps are integrated with the head unit, and the pair of metering pumps are inflow and outflow paths for chemicals And a flow path is opened at the bottom surface of the mounting recess, the head portion is composed of a head body, a cover plate, and a cover body, the mounting recess is provided at the center of the lower surface of the head body, and Through the shaft hole in the center Forming a shaft hole through the center of the cover plate disposed at the top of the head body, and penetrating a shaft hole at the center of the cover body disposed at the top of the cover plate. The insertion portion is formed by a hole, a shaft hole of the cover plate, and a shaft hole of the cover body, and the pair of metering pumps are a pair of gear pumps, and the pair of gear pumps has a central axis parallel to the rotating shaft. A pair of drive gears and driven gears; a head body having a pair of receiving recesses for receiving the two sets of drive gears and driven gears; and a lid for closing an upper opening of the pair of receiving recesses And a transmission means for synchronously driving the rotary mixer and the pair of gear pumps on the rotary shaft and the pair of gear pumps. Means before A main driving gear mounted on an intermediate portion of the rotating shaft, and a driven gear mounted on the central shaft of the drive gear of the pair of gear pumps and meshed with the main driving gear, and the main driving gear on the lower surface of the cover body And an accommodation recess for the driven gear, the pair of gear pumps are arranged at 180 ° point symmetrical positions, the outflow path is formed on the side closer to the rotation shaft , and the inflow path is formed on the far side , and Directly supplying the chemical liquid from the outflow path to the rotary mixer by connecting the pair of receiving recesses and the mounting recess in a straight line with the outflow path and arranging the pair of metering pumps at the ends of the chemical liquid supply means Thus, the above problem is solved by making the downstream side of the chemical solution supply means shorter and not deformed than the pair of metering pumps.

  In short, the present invention is rotationally driven by the drive unit, the head unit disposed in the lower part of the drive unit, and the drive unit inserted in the insertion portion formed vertically through the center of the head unit. Two-component mixing type injection having a rotating shaft and a rotary mixer that is detachably mounted in a mounting recess provided in the center of the lower surface of the head portion, and that has a rotary mixer in which a lower end of the rotating shaft is connected to an internal mixer rotator. A pair of metering pumps integrated with the head, the pair of metering pumps having an inflow channel and an outflow channel for the chemical solution, and the outflow channel is opened at the bottom surface of the mounting recess. The metering pump is disposed at the end of the chemical solution supply means, and the chemical solution can be directly supplied to the rotary mixer without pressure loss from the outflow passages of the pair of metering pumps. Even if the supply pressure fluctuates upstream, Kind of Liquid it is possible to maintain reliable constant at all times the supply amount.

The head portion is composed of a head main body, a cover plate, and a cover body, has the mounting recess in the center of the lower surface of the head main body, and has a shaft hole formed through the center, and is disposed on the upper portion of the head main body. center formed through the shaft hole of the cover plate, a shaft hole at the center of the cover body was disposed above the cover plate formed through shaft hole of the head body, shaft hole and the cover member of the cover plate The insertion portion is formed by a shaft hole, and the pair of metering pumps are used as a pair of gear pumps. The pair of gear pumps accommodates two sets of drive gears and driven gears, and the two sets of drive gears and driven gears. Since the head main body having a pair of receiving recesses formed on the upper surface and the lid plate closing the upper opening of the pair of receiving recesses, the pair of gear pumps are integrated into the head unit. It can be realized.
In addition, since the inflow path and the outflow path are formed in the head body, the inflow path and the outflow path, which are the ends of the chemical solution supply means, are formed in the head body, so that deformation due to pressurization can be prevented. .

  Since the rotary shaft and the pair of gear pumps are provided with transmission means for synchronously driving the rotary mixer and the pair of gear pumps, the drive unit can move the rotary mixer and the pair of gear pumps. It is possible to achieve compactness and energy saving.

The transmission means includes a main driving gear attached to an intermediate portion of the rotating shaft, and a driven gear attached to a central shaft of a driving gear of the pair of gear pumps and meshed with the main driving gear. A receiving recess for the main driving gear and the driven gear is formed on the lower surface, and the pair of gear pumps are arranged at a 180-degree point symmetrical position, and the outflow path is closer to the rotating shaft and the inflow is farther away. Since the path is formed and the pair of receiving recesses and the mounting recess are linearly communicated with each other in the outflow path, the rotary mixer and the pair of gear pumps can be driven synchronously with a simple structure. Its practical effect is great.

It is sectional drawing of the two liquid mixing type injection machine which concerns on this invention. It is an AA expanded sectional view of FIG. It is BB expanded sectional drawing of FIG. It is CC 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 injection machine according to the present invention, basically, the drive unit 1, the head unit 2 disposed at the lower part of the drive unit 1, and the longitudinal center of the head unit 2 are formed. Mixing grouter installed inside the rotary shaft 4 that is inserted into the insertion part 3 and that is rotationally driven by the drive unit 1 and the mounting recess 5 provided at the center of the lower surface of the head unit 2. 6 includes a rotary mixer 7 having a rotary shaft 4 connected to the lower end thereof, and a pair of metering pumps 8 and 8a for supplying two kinds of chemical solutions integrated with the head unit 2, and the metering pumps 8 and 8a include Inflow passages 10 and 10 a and outflow passages 11 and 11 a are provided, and the outflow passages 11 and 11 a are opened at the bottom surface of the mounting recess 5.
Preferably, the metering pumps 8 and 8a are gear pumps, and the rotary shaft 4 and metering pumps 8 and 8a are provided with transmission means 9 and 9a for synchronously driving the rotary mixer 7 and metering pumps 8 and 8a.

The head unit 2 is detachable from the drive unit 1 and is formed by integrating the head main body 12, the cover plate 13 and the cover body 14 with bolts or the like. A shaft hole 15 is formed in the center of the cover plate 13 disposed in the upper part of the head body 12, and a shaft hole 17 is formed in the center of the cover body 14 disposed in the upper part of the cover plate 13. An accommodation recess 18 of the transmission means 9 and 9a is formed on the lower surface of the cover body 14, and an attachment portion 19 to the drive unit 1 is formed on the upper surface.
Further, the insertion portion 3 is formed by the shaft hole 15 of the head body 12, the shaft hole 16 of the cover plate 13, and the shaft hole 17 of the cover body 14.

The pair of metering pumps 8 and 8a is a pair of gear pumps, and a pair of housings for housing two sets of driving gears 21, 21a and driven gears 22, 22a, and the two sets of driving gears 21, 21a and driven gears 22, 22a. The head main body 12 having the concave portions 20 and 20a formed on the upper surface and the lid plate 13 for closing the upper opening of the pair of receiving concave portions 20 and 20a are integrated and integrated in the head portion 2. Yes.
The other accommodation recess 20a is arranged at a position 180 degrees symmetrical about the center of the upper surface with respect to one accommodation recess 20, the drive gears 21 and 21a are arranged closer to the shaft hole 15, and the inflow passages 10 and 10a And the outflow passages 11 and 11a are drilled in the head main body 12, and the outflow passages 11 and 11a are disposed on the side close to the shaft hole 15 on both sides of the center of the receiving recesses 20 and 20a, and the inflow passages 10 and 10a are disposed on the far side. Are opened respectively.
Specifically, the rotary shaft 4 and the fixed gears are arranged so that the rotary shaft 4 and the drive gears 21 and 21a are arranged in a straight line and the drive gears 21 and 21a and the driven gears 22 and 22a are arranged in a direction orthogonal to the arrangement direction. Pumps 8 and 8a are arranged.

The lower ends of the central shafts 23, 23a of the drive gears 21, 21a and the lower ends of the central shafts 24, 24a of the driven gears 22, 22a are pivotally attached to the bottom surfaces of the receiving recesses 20, 20a, and the drive gears 21, 21a and the driven gears 22 are connected. 22a and the bottom surfaces of the housing recesses 20 and 20a are in contact with each other.
The upper ends of the center shafts 23, 23a of the drive gears 21, 21a are passed through the cover plate 13, the upper ends of the center shafts 24, 24a of the driven gears 22, 22a are pivoted, and the drive gears 21, 21a and the driven gears 22, The upper surface of 22a and the lower surface of the cover plate 13 are in contact with each other.

  The transmission means 9 and 9a are attached to the main driving gear 25 by being attached to the small-diameter main driving gear 25 attached to the intermediate portion of the rotating shaft 4 and the projecting end portions from the cover plate 13 in the central shafts 23 and 23a of the driving gears 21 and 21a. The rotary mixer 7 and the metering pumps 8 and 8a can be synchronously driven by the rotation of the rotating shaft 4 through the main driving gear 25 and the driven gears 26 and 26a. .

  Incidentally, an O-ring is provided between the central shafts 23, 23a, 24, 24a and the cover plate 13 and between the rotary shaft 4 and the head main body 12, thereby preventing the leakage of each chemical solution and the mixed solution. , 23a, 24, 24a and the rotating shaft 4 are rotatable.

Next, the operation of the two-component mixing type injector according to the present invention will be described.
The two types of chemical solutions pass through the inflow passages 10 and 10a from the upstream side of the chemical solution supply means and are supplied into the metering pumps 8 and 8a. A predetermined amount of the chemical solution is supplied from the metering pumps 8 and 8a to the outflow channels 10 and 10a. The two kinds of supplied chemical solutions are gradually mixed while being moved to the tip side of the rotary mixer 7 by the mixing mixer 6 rotated by the rotating shaft 4 and supplied to the rotary mixer 7. Therefore, there is no pressure loss from the inlet of the inflow passages 10 and 10a to the outlet of the outflow passages 11 and 11a.
However, when the rotating shaft 4 is rotated by the drive unit 1, the mix rotator 6 in the rotary mixer 7 rotates, and at the same time, the drive gears 21, 21 a in the metering pumps 8, 8 a via the main driving gear 25 and the driven gears 26, 26 a. Is rotated, and two kinds of chemical solutions are quantitatively supplied by the metering pumps 8 and 8a.

  The metering pumps 8 and 8a, which are gear pumps, are rotated in reverse when one supply is completed, so that there is no chemical between the internal gears, so that a set amount can be obtained without using a valve. Can be supplied accurately.

DESCRIPTION OF SYMBOLS 1 Drive part 2 Head part 3 Insertion site 4 Rotating shaft 5 Mounting recessed part 6 Mixin grouter 7 Rotary mixer 8, 8a A pair of metering pumps 9, 9a Transmission means
10, 10a Inlet channel
11, 11a Outflow channel
12 Head body
13 Cover plate
14 Cover body
15, 16, 17 shaft hole
18 Housing recess
20, 20a A pair of receiving recesses
21, 21a Drive gear
22, 22a Driven gear
23, 23a Center axis
25 Main gear
26, 26a driven gear

Claims (1)

A drive unit, a head unit disposed at a lower portion of the drive unit, a rotation shaft that is inserted into an insertion portion that is vertically formed in the center of the head unit, and is rotationally driven by the drive unit; A two-liquid mixing type injector having a rotary mixer in which a lower end of the rotating shaft is connected to a built-in mixing grotter, which is detachably attached to a mounting recess provided in a central portion of the lower surface of the head portion, A pair of metering pumps are integrated with the head part, the pair of metering pumps have an inflow path and an outflow path for a chemical solution, and an outflow path is opened at the bottom surface of the mounting recess. It is composed of a cover plate and a cover body, has the mounting recess at the center of the lower surface of the head main body, and has a shaft hole formed through the center, and the shaft hole is formed at the center of the cover plate arranged at the top of the head main body. Penetrated and placed on top of the lid A shaft hole is formed through the center of the cover body, the insertion portion is formed by the shaft hole of the head body, the shaft hole of the cover plate, and the shaft hole of the cover body, and the pair of metering pumps are paired with a pair of metering pumps. The pair of gear pumps has a pair of drive gears and driven gears whose central axes are parallel to the rotation shaft, and a pair of receiving recesses for receiving the two sets of drive gears and driven gears. The head main body and the lid plate that closes the upper openings of the pair of housing recesses are formed, the inflow passage and the outflow passage are formed in the head main body, and the rotary shaft and the pair of gear pumps are connected to a rotary shaft. Transmission means for synchronously driving the mixer and the pair of gear pumps is provided, and the transmission means is attached to a main drive gear attached to an intermediate portion of the rotation shaft and a center shaft of a drive gear of the pair of gear pumps. Main movement Constituted by the driven gear is meshed with the car, the lower surface of the cover member, the main driving form a gear and concave of the driven gear, and placing the pair of gear pump at the position of 180 degrees in point symmetry, the The two-part liquid characterized in that the outflow path is formed on the side close to the rotation shaft , the inflow path is formed on the far side , and the pair of receiving recesses and the mounting recesses are linearly connected to the outflow channel. Mixed injection machine.

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