JPH0113111Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metering discharge device for discharging a fixed amount of lightweight articles such as soft plastic containers from a hopper.

(Prior Art) Light weight bodies such as soft plastic containers have a small self-weight compared to external contact resistance, making it difficult to transport them smoothly. For this reason, pneumatic transport or vibration belts are used for horizontal continuous transport.

In addition, the vertical drop method has the disadvantage that it is easily deformed by stacking loads or impacts, and the outer surface is easily damaged.

To avoid this, intermittent fixed-rate discharge and constant-speed discharge are preferable, but the shapes, sizes, and apparent specific gravity of containers vary, and any vertical discharge device that can accommodate them is incomplete.

(Purpose) This proposal provides a lightweight vertical ejection device that can adjust the accommodation space according to the object to be ejected, as well as the single-time ejection amount and ejection speed. The present invention provides a device that does not damage the discharged material due to the upper closure device.

(Structure) In the present device, a part of a tubular chute connected to a hopper outlet and installed vertically is formed as a quantitative storage part for articles, and a lower part of the quantitative storage part is provided with two external sides of the chute, respectively, so as to intersect with the chute. A shutter device is provided having a pair of shutter plates that advance and retreat oppositely from each other, and a pair of slide plates that have a semicircular notch recess that advances and retreats oppositely to the chute formed in the upper part of the quantitative storage portion, and the notch recess. A closing device comprising a stretchable elastic strip stretched between both ends of the shutter device is provided, and the closing device is configured to be adjustable in position with respect to the shutter device.

In the present invention, the tubular chute does not need to be made of an elastic material such as rubber, and may be made of cloth.

Further, the driving device for operating the shutter device and the closing device in opposition is preferably a linear actuator or the like that can adjust the opening degree, rather than one that operates on and off.

(Example) 1 is a hopper, 2 is a bottom outlet, 3 is a tubular chute made of cloth, 4 is a closing device, and 5 is a shutter device for regulating the discharge speed.

Reference numeral 6 denotes a quantitative storage section for articles, which can be adjusted by varying the distance L between the closing device 4 and the shutter device.

The closing device 4 includes a pair of slide plates 7 and 8 that are slidably provided on a support plate 9 and move back and forth from both sides of the outside of the chute so as to intersect with the upper limit portion 6a of the quantitative storage portion 6. , 8, and a cylinder 10 for moving them forward and backward.

10a is a piston rod, which is connected to the slide plate 7.

Racks 11a and 11b are formed on both sides of the slide plate 7 as shown in FIG.
Pinions 13a and 13b, which are rotatably provided on upright shafts 12a and 12b fixedly installed on the support plate 9, are meshed with a and 11b, respectively. Further, the pinion 13 is attached to the other slide plate 8.
Projecting pieces 8c, 8b are provided on the outside of a, 13b to project toward the cylinder 10 side, and the projecting pieces 8c, 8
Rack 14a, 14b formed on each inner side of d
are meshed with the pinions 13a and 13b, respectively.

With this configuration, the slide plates 7 and 8 are moved forward and backward symmetrically with respect to the chute 3. Semicircular arc-shaped recesses 15 and 16 are cut out in the opposing parts of each slide plate, respectively, and at the ends of each recess 15 and 16, a stretchable elastic strip 17 made of a coil spring,
18 has hooks 17a, 17b and 18 at each end thereof.
a, 18b are hooked and stretched in the mounting holes 7a, 7b and 8a, 8b. Incidentally, a chute hanging opening 19 having a larger opening diameter than the chute 3 is formed in a portion corresponding to the notches 15 and 16 of the support plate 9. The shutter device 5 has a pair of shutter plates 20 and 21 that advance and retreat oppositely so as to intersect the lower limit portion 6b of the quantitative storage portion 6, and the shutter plates 20 and 21 are connected to the slide plates 7 and 8, respectively. It is placed directly below and slidably on the fixed base plate 22,
An air cylinder 23 for advancing and retracting the shutter plates 20 and 21 is fixedly installed on the fixed base plate 22, and a piston rod 23a of the cylinder 23 is connected to one of the shutter plates 20. The shutter plate 2
There are racks 24 on both sides of 0 as shown in Figure 3.
a, 24b are formed, and the racks 24a, 24b
Pinions 26a and 26b, which are rotatably provided on upright shafts 25a and 25b fixedly installed on the fixed base plate 22, are meshed with each other, respectively. Further, the other shutter plate 21 has the pinions 26a, 2
Projecting pieces 21a, 21b are provided on the outside of 6b and projecting toward the cylinder 23 side, and the projecting pieces 21a, 2
Rack 27a, 27 formed on each inner side of 1b
b are meshed with the pinions 26a and 26b, respectively. 28 is a chute hanging opening.

The support plate 9 is supported by being screwed into the threaded portions 30 of four screw rods 29 erected on the fixed base plate 22, and can be closed by rotating the upright rods 29 with a handle 31. sliding plate 7 of device 4;
The distance L between the shutter device 8 and the shutter device 5, that is, the size of the accommodation space is adjusted.

32a, 32b are guides for the slide plates 7, 8; 33a, 33b are shutter plates 20, 21;
This is a guide.

In the above device, the slide plates 7 and 8 of the closing device 4 are opened and closed at the upper limit portion 6a of the chute 3 by the retraction operation of the cylinder 10, and the shutter plates 20 and 21 of the shutter device 5 are opened and closed by the extension operation of the cylinder 23. The lower limit portion 6b is opened and closed. 1st
As shown in the figure, the article 34 in the hopper 1 passes through the delivery port 2 and is filled into the quantitative storage section 6 of the sheet 3. Then, in response to the article delivery signal, the shutter plates 7 and 8 of the closing device 4 are advanced by the extension operation of the cylinder 10 to close the upper limit portion 6a of the chute 3, as shown in FIG. When the shutter plates 20 and 21 of the device 5 open the lower limit portion 6b of the chute, only a certain amount of the articles stored in the quantitative storage section 6 are dropped and discharged. The amount of discharge at this time can be adjusted by the opening degree of the shutter plate. Next, the shutter device 5 is closed and the closing device 4 is opened to return to the initial state. By repeating the above operations, the articles 34 in the hopper 1 can be sent out intermittently in fixed amounts.

(Effects of the invention) Since the present invention has the above-mentioned configuration, it is possible to reliably send out the article 34 in a fixed amount through the quantitative storage section 6 of the chute 3, and since the chute 3 is made of a soft material, it is possible to send out the article 34 in a fixed amount at a time through the quantitative storage section 6 of the chute 3. To accurately discharge a fixed amount without damaging soft articles such as bottles, and without causing the articles to become clogged on the way. Furthermore, each of the slide plates 7 and 8 of the closing device 4 has semicircular arc-shaped recesses 15 and 16 at the portion facing the chute 3, and stretchable elastic strips 17 and 18 are stretched between the ends thereof. The upper limit portion 6a of the storage and metering portion 6 of the chute 3 can be reliably closed without crushing the internal articles at the time of closing, to the extent that the articles do not fall.

Furthermore, in the present invention, since the distance between the closing device 4 and the shutter device 5 can be adjusted, the capacity of the quantitative storage space 6 can be increased or decreased. You can increase or decrease the amount as you like.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIGS. 2 and 3 are sectional views taken along lines - and - in FIG. 1, respectively, and FIG. 4 is a diagram showing an operating state. FIG. 1 is a vertical cross-sectional view equivalent to FIG. 1...Hopper, 3...Chute, 4...Closing device, 5...Shutter device, 6...Quantity storage section.

Claims (1)

[Scope of utility model registration request] A part of a tubular chute connected to the hopper outlet and vertically installed is formed as a quantitative storage part for articles, and a pair of lower parts of the quantitative storage part are arranged oppositely to advance and retreat from both sides of the outside of the chute so as to intersect with the chute. A shutter device having a shutter plate is provided, and a pair of slide plates are provided in which a semicircular notch recess is formed in the upper part of the quantitative storage portion and move forward and backward in opposition to the chute, and a pair of slide plates are provided extending between both ends of the notch recess. A quantitative dispensing device for a soft container body, etc., comprising a closing device comprising a stretchable elastic strip, the closing device being adjustable in position with respect to the shutter device.