JPS6347982Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention automatically measures powdered or granular raw materials such as powdered instant coffee used in instant coffee vending machines using a dispensing signal. The present invention relates to a dispensing device.

[Conventional technology]

As such a dispensing device, a screw feeder or other raw material extrusion device is installed in the lower part of the raw material tank, and when a dispensing signal is received, the driving means of this extrusion device is driven for a certain period of time to open the dispensing port at the tip of the extrusion device. A device that discharges raw materials from a container is generally used.

In addition, various types of devices have been proposed in which the dispensing port is provided with a lid that can be opened and closed in order to prevent steam generated in the stirring/mixing section of the raw material and hot water from entering through the dispensing port.

Conventional opening/closing devices for dispensing ports as described above include those that have a lever that swings around a fulcrum and a lid that further rotates around a fulcrum, and those that have a mechanism that includes a lever that swings around a fulcrum and a lid that rotates around a fulcrum, and a mechanism that uses a lever that swings around a fulcrum and a lid that rotates around a fulcrum, and a mechanism that uses a lever that swings around a fulcrum and a lid that rotates around a fulcrum. A hole is provided in a part of the tube, and when the receiving cylinder is rotated half a turn and the hole faces upward, the raw material is put into the receiving tube.From this state, when the receiving tube is turned half a turn and the hole is directed downward, the raw material is discharged. There is something that has been made to be done.

[Problem that the invention attempts to solve]

Among the conventional devices mentioned above, those with a swingable lid attached to the swing lever appear to have good adhesion between the lid and the outlet when viewed from the side, but the lid swings around the shaft. Therefore, if the shaft and the end face of the dispensing port are not parallel, a gap is created, which causes a problem in that the machining process is time-consuming.

Further, in a device that rotates the receiving cylinder by half a rotation, a motor and a speed reducer are required to rotate the receiving cylinder, and therefore a control circuit is required to accurately control the rotation of the motor.

[Means for solving problems]

In order to solve the above problems, this invention provides a raw material extrusion device at the bottom of a raw material tank containing powdered or granular raw materials, and a dispensing port with a lid that can be opened and closed at the front of this extrusion device. In the quantitative dispensing device provided, a horizontal cylindrical raw material receiving cylinder is fixed to the front part of the extrusion device, a dispensing opening is provided at the lower part of the receiving cylinder near the rear, and the upper part of the receiving cylinder is used as a fulcrum to move left and right. A pair of left and right semicircular lids that open and close and close the above-mentioned dispensing port when closed, and an electromagnet that opens and closes these lids are provided. A detection device is provided to stop the extrusion device when the pressure reaches a certain value, and the electromagnet is configured to open in response to a raw material discharge signal.

[Effect]

Since this device has the above configuration, when the receiving cylinder is empty and the lid closes the dispensing port, the motor drives the extruder and pushes the raw material in the raw material tank into the receiving cylinder. When the pressure of the raw material pushed into the receiving cylinder reaches a certain value, a detection device is activated and the extrusion device is stopped.

When a dispensing signal is input in the above state, the electromagnets are activated to open the left and right lids and the raw material is dispensed from the dispensing port.

When the raw material is discharged in this manner, the raw material extrusion device is driven again.

〔Example〕

Embodiments of this invention will be described below based on the accompanying drawings.

In the figure, reference numeral 1 denotes a raw material tank, and an extrusion device 2 is provided in the lower part thereof. In the illustrated example, this extrusion device 2 is a screw feeder, and is driven by a motor 3 at the rear end of the tank 1.

Reference numeral 4 denotes a receiving cylinder provided at the front of the extrusion device 2. A dispensing port 5 is provided at the lower side near the rear of the receiving cylinder 4, and the dispensing port 5 is opened and closed by a pair of lids 6.
The lids 6 are comprised of a pair of left and right lids, and the upper end of each lid 6 is rotatably attached to a pair of front and rear support pieces 8 on the upper side of the receiving tube 4 via a shaft 7.

Reference numeral 11 denotes a support frame fixed to the front side of the raw material tank 1, and an electromagnet 12 for opening and closing the lid 6 is fixed to this frame 11.
The drive rod 13 and each lid 6 that are raised and lowered by this electromagnet 12
are connected by a link mechanism 14, and when the electromagnet 12 is excited and the drive rod 13 is raised, the lid 6 opens left and right as shown by the chain line in FIG.

A is a detection device, in which a rubber plate 16 is attached to the rear end of the case 15, an advance/retreat plate 17 is fixed to the front of the rubber plate 16, and a push rod 18 at the center of the front surface of the advance/retreat plate 17 is inserted into the case 15 at the front. part micro switch 19
facing the working piece.

Reference numeral 20 denotes an adjustment screw rotatably attached to the front wall of the receiving tube 4. The inner end of the adjusting screw 20 is screwed into a screw hole provided in the front wall of the case 15, and the detection device A is adjusted by rotating the screw 20. Configure it to advance and retreat.

The micro switch 19 controls the drive motor 3 of the extrusion device 2, and the motor 3 continues to rotate until the push rod 18 pushes the action piece of the switch 19, and when the push rod 18 pushes the action piece of the switch 19, The circuit is configured so that the motor 3 stops. Further, the electromagnet 12 opens the lid 6 for a certain period of time in response to a dispensing signal.

In the above configuration, under the condition that the receiving cylinder 4 is empty and the lid 6 closes the dispensing port 5, the motor 3 drives the extrusion device 2 to push the raw material in the raw material tank 1 into the receiving cylinder 4. The raw material pushed into the receiving cylinder 4 by the device 2 presses the rubber plate 16 forward, and the forward/backward plate 17 and the tip of the push rod 18 touch the micro switch 1.
When the action piece 9 is pressed, the motor 3 stops.

When a dispensing signal is input in this state, the electromagnet 12 is excited, the drive rod 13 is raised, and the lid 6 is opened, so that the raw material in the receiving cylinder 4 is disbursed from the dispensing port 5. The moment the raw material is discharged from the discharge port 5, the electromagnet 12 is demagnetized and the lid 6 is closed.

Furthermore, when the raw material in the receiving cylinder 4 is discharged, the pressure on the rubber plate 16 is released, and its restoring force causes the press rod 18 to
The motor 3 is started and the extrusion device 2 begins to extrude the raw material.

[Effect of idea]

As described above, the dispensing device of this invention has a raw material extrusion device installed at the bottom of the raw material tank containing powdered or granular raw materials, and a horizontal cylindrical raw material receiving cylinder is fixed to the front part of this extrusion device. A dispensing port is provided at the lower part of the rear side of the receiving tube, which opens and closes from side to side using the outer upper part of the receiving tube as a fulcrum, and a pair of left and right semicircular lids that close the dispensing port when closed, and the lids are opened and closed. Since the raw material is provided with an electromagnet, the raw material is dispensed by simply energizing the electromagnet for a very short time using a dispensing signal, making control easy. In addition, a detection device was installed at the front of the receiving cylinder to detect the pressure of the extruded raw materials and stop the extrusion device when the pressure reaches a certain value, so there is no waiting time for sales until the unloading signal is issued. In this case, since the extrusion device operates and a fixed amount of raw material is contained in the receiving cylinder, a fixed amount of raw material is discharged from the dispensing port at the same time as the dispensing signal is issued and the lid is opened.

Therefore, compared to a conventional dispensing device in which the extrusion device operates in response to a dispensing signal and starts dispensing, the time required for dispensing is significantly shortened. Furthermore, since the detection device detects the pressure of the extruded raw material and stops extrusion, a fixed amount of raw material can be dispensed regardless of the amount of raw material in the raw material tank. Further, when there is no raw material in the raw material tank, the receiving cylinder remains empty even if the extrusion device works, and the detection device does not work.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of the dispensing device of this invention, FIG. 2 is an enlarged longitudinal sectional side view of the main parts of the same, and FIG. 3 is an enlarged longitudinal sectional front view of the same. 1... Raw material tank, 2... Extrusion device, 4... Receiving cylinder, 5... Dispensing port, 6... Lid, A... Detecting device.

Claims (1)

[Scope of utility model registration request] In a quantitative dispensing device, in which a raw material extrusion device is provided at the bottom of a raw material tank containing powdered or granular raw materials, and a dispensing port with a lid that can be opened and closed is provided at the front of the extrusion device, the front part of the extrusion device A horizontally cylindrical raw material receiving cylinder is fixed to the cylinder, and a dispensing port is provided at the lower part of the receiving cylinder near the rear, and the receiving cylinder opens and closes from side to side using the outer upper part as a fulcrum, and when closed, the dispensing port is closed. A semicircular lid and an electromagnet to open and close this lid are installed, and the front part of the receiving cylinder detects the pressure of the extruded raw material and stops the extrusion device when the pressure reaches a certain value. A quantitative dispensing device comprising a detection device, and the electromagnet is configured to open in response to a raw material dispensing signal.