JPH057553Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a combination weighing device that discharges articles to be weighed, such as food, to the outside every fixed amount. This invention relates to an easy combination weighing device.

[Prior Art] Generally, when selling products, it is necessary to always pack them at a constant weight or at the closest weight, for example, and for this reason, a group of products as a product must be packed in a plurality of bags so that they are as uniform as possible. Articles are divided into several groups of articles, and arbitrary article groups are selected and combined from the plurality of article groups so as to have a constant weight or the closest weight. A typical example of such a combination weighing device is shown in FIG.

As shown in FIG. 4, a plurality of linear feeders 8 are provided radially below a substantially conical cone disk 6 provided below the tip 41a of the carry-in path 41. An article receiver 45 is arranged below the intermediate hopper 42, a weighing hopper 43, and a memory hopper 44, which are provided in this order below the tip 8b.A discharge hopper 48 is arranged below the article receiver 45. 4
6 is placed.

Of these, the conical disk 6 and the linear feeder 8 are vibrated by a vibration mechanism.

In the combination weighing device configured in this way, the group of articles supplied from the carry-in path 41 is transferred to the conical disk 6.
It is dropped onto the conical disk 6 and deposited on a plurality of linear feeders 8 provided radially below the conical disk 6.

When the conical disk 6 and the linear feeder 8 are vibrated by the vibration mechanism, the accumulated articles fall into an intermediate hopper 42, a weighing hopper, and a memory hopper 44, which are sequentially provided downward from the tip 8b of the linear feeder 8. It's becoming like that.

Here, arbitrary groups of articles are selected and combined and dropped onto a conveyor bucket conveyor 46 at the same time by a discharge hopper 48. After detecting that the memory hopper 44 is empty, the weighing hopper 43 above the empty memory hopper 44 opens, then the intermediate hopper 42 above the weighing hopper opens, and then the intermediate hopper 42 opens. Intermediate hopper 4 which is empty due to vibration of straight feeder 8
When the amount of articles accumulated on the linear feeder 8 decreases due to this operation, the conical disk 6 vibrates to feed the articles onto the linear feeder 8.

These intermediate hopper, weighing hopper, and memory hopper are each driven by a drive mechanism 49, and these drive mechanisms 49 are housed in a case.

When this operation is repeated and the amount of articles accumulated on the conical disk 6 decreases, the detection device 47 detects this and supplies the articles onto the conical disk 6 from the conveyance path 41.

[Problems to be solved by the invention] By the way, in the combination weighing device as described above, the intermediate hopper 42, the weighing hopper 43, the memory hopper 44, and the drive mechanism 49 that drives these are as follows.
As shown in the figure, a drive mechanism 49 is provided outside the device, and each intermediate, metering, and memory hopper 4
2, 43, and 44 are attached to the inner surface of the drive mechanism 49, and it is not only impossible to see the operation of the intermediate hopper 42, weighing hopper 43, and memory hopper 44, but also it is not easy to attach and detach them during cleaning. It had drawbacks.

Further, the drive mechanism 49 is arranged on the outside,
Another drawback was that the entire device became larger.

The present invention has been developed in view of the above-mentioned drawbacks, and it is easy to maintain the intermediate, measuring, and memory hoppers by cleaning, etc., and also provides a drive mechanism for driving each of the intermediate, measuring, and memory hoppers, and each hopper. The object of the present invention is to provide a combination weighing device that has a simple structure, high reliability, and can be miniaturized.

[Means for solving problems]

In order to achieve the above object, the combination weighing device of the present invention has an intermediate hopper 1 for temporarily storing articles and supplying them to the lower stage.
0; Weighing hopper 13 which is arranged below the intermediate hopper 10 and measures the weight of the article fed from the intermediate hopper 10; Wearing hopper 13 which is arranged below the weighing hopper 13 and measures the weight of the article fed from the weighing hopper 13; memory hoppers 21 and 22 for temporarily storing articles and discharging them to the lower stage; the weighing hopper 13 and memory hoppers 21 and 22 are attached to the front side 14a;
A substrate 14 on which drive mechanisms 17, 18, 19, 23, 24 for driving the intermediate hopper 10, weighing hopper 13, and memory hoppers 21, 22, respectively, and a weighing device 16 of the weighing hopper 13 are attached to b.
A plurality of substrates 14 are arranged upright in a cylindrical shape, and each of the substrates 14 is detachable and can be pulled out radially forward with the drive mechanism and measuring device attached to at least the back side of each substrate. and; rail means for guiding and pulling out each board 14 radially forward in its upright state.

[Effect]

In the above structure of the present invention, in the operating state shown in FIG. 3a in which the substrates 14 are arranged in a cylindrical shape and fixed to each other, the article passes through the outer peripheral surface of the combination weighing device 1 on the front surface 14a side of the substrate 14. , drive mechanism 1
7, 18, 19, 23, 24 are the back side 1 of the substrate 14
Since it can be stored inside the combination weighing device 1 on the 4b side, the space inside the device can be used effectively and the entire device can be downsized. Operation can be visually confirmed.

Also, each substrate 14 in FIG. 3b is separated from each other. When one or more of the sheets is pulled out along the rail means (rail 14c, etc.), maintenance such as inspection of each drive mechanism and the hopper corresponding to the weighing device can be easily performed from above or from the side. In particular, it is possible to easily check the operating state of the weighing hopper 13 and the corresponding weighing device 16.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 is a perspective view showing the combination weighing device of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3a is an enlarged sectional view of the hopper portion of Fig. 1, and Fig. 3b is a hopper unit and drive. FIG. 3 is a diagram showing a state in which the board to which the mechanism is attached is taken out.

As shown in FIG. 1, the combination weighing device 1 houses a control device such as an electric circuit, and includes a base 2 whose lower part is supported by legs 2a, and a column 3 above the base 2.
It is constituted by a mechanism section 4 provided via a.

As shown in FIGS. 1 and 3a, the mechanism section 4 includes a circular fixed base 5 supported at the upper end of the support column 3;
A support shaft 5d is provided vertically downward from the center of the lower surface of the fixed base 5, a mounting plate 5e is provided at each location by dividing the entire circumference of the fixed base 5 into eight equal parts at the lower part near the periphery; A bottom plate 5f provided at the lower end of the plate 5e, and eight boards _14-1 to _14-8 fixed with screws between the mounting plates 5e and 5e adjacent to the entire circumference of the lower part of the fixed base 5, and the board _14-1. ~1
Hopper units _30-1 to _30-8 attached to the front surface 14a of _4-8 and hopper drive mechanisms _31-1 to _31-8 attached to the rear surfaces of substrates _14-1 to _14-8.
It consists of These substrates 14, hopper units 34, and hopper drive mechanisms 31 are given suffixes in clockwise order.

A conical disk 6 is provided above the mechanism section 4, that is, above the fixed base 5, and this conical disk 6 is vertically vibrated by a vibration mechanism 9 such as an air vibrator.

Below this conical disk 6, a plurality of straight feeders 8 are arranged radially together with a vibration mechanism 7 that vibrates the straight feeder 8 in the outer circumferential direction, and in this embodiment, eight straight feeders 8 _{- 1} ~ 8 _-8
are provided, and these straight feeders _8-1 to _8-8
are located above the hopper units 30 _-1 to 30 _-8 attached to the substrates 14 _-1 to 14 _-8 of the fixed base 5, respectively.

The linear feeders 8 _-1 to _{8 -8} are provided with their inner edges 8 a along the outer periphery of the conical disk 6 so as not to come into contact with the conical disk 6 .

Next, among the hotspa units 30 _-1 to 30 _-8 ,
One hopper unit _30-6 as shown in Figure 3a
This section describes the mechanism related to this.

As shown in the figure, the outer edge 8 of the straight feeder 8 _-6
A top-shaped introduction wall 11 is provided at position b to prevent articles from scattering and has its lower end 11b locked to the upper edge 10a of the intermediate hopper _10-6 .

The intermediate hopper _10-6 is connected to the peripheral edge 5b of the fixed base 5.
It is removably installed on a hopper hook 12 fixed to the hopper hook 12, and a discharge door 10b is provided at the bottom. This discharge door 10b is the back surface 14b of the board _14-6 .
It is driven to open and close by a drive mechanism _17-6 provided on the board 14-6 and a drive piece 17a protruding from the front surface of the board _14-6 .

At the position directly below the discharge door 10b of the intermediate hopper _10-6 ,
On the front surface 14a side of the substrate _14-6 , there is a base front surface 14.
A removable weighing hopper _13-6 is provided on a hopper hook 15 fixed to a.

The weighing hopper _13-6 is used to weigh a group of articles by means of a weighing device _16-6 provided on the back surface 14b of the substrate via the hopper hook 15. After weighing, the weighing hopper 13-6
_3-6 Two discharge doors 13a and 1 provided at the bottom
3b. Ejection door 13a,
13b is the board 14 _-6 Drive mechanism 18 _- on the back side 14b
₆ , 19 _-6 and drive pieces 18a, 19a on the front surface 14a
They are each driven to open and close by.

Furthermore, the front surface 14 of the board _14-6 is placed directly under the two discharge doors 13a and 13b of this weighing hopper _13-6 .
At the position on the a side, there are two memory hoppers 21 _-6 which are detachably attached to a hopper hook 20 fixed to the board 14a.
22 _-6 is provided.

Ejection doors 21a, 22a are provided at the bottom of the memory hoppers _21-6 , _22-6 , respectively.
22a is driven to open and close by driving pieces 23a and 24a of drive mechanisms _23-6 and _24-6 provided below the back surface 14b of the substrate _14-6 and protruding toward the front surface 14a of the substrate.

These intermediate hoppers 10 _-6 , weighing hoppers 13 _-6 ,
Each drive mechanism 17 _- of the memory hoppers 21 _-6 and 22 _-6
6 , _18-6 , _19-6 , _23-6 , _24-6 are constituted by air cylinders, and each drive piece 17a, 1
8a, 19a, 23a, 24a are removably attached to the door of each hopper, and these drive mechanisms 17 _-6 , 18 _-6 ,
19 _-6 , 23 _-6 , and 24 _-6 are driven by an air supply source 25 _-6 attached to the back surface 14b of the substrate.

The hopper unit 30 and drive mechanism 31 attached to the above-mentioned substrate 14 are connected to the fixed base 5.
There are a total of 8 locations around the entire circumference. Therefore, the substrate 14 is erected in a cylindrical shape.

Below the memory hoppers 21 and 22, a conical article receiver 26 with an open top is arranged, and a discharge hopper 27 and a bucket conveyor 28 are provided below.

The control device provided in the base 2 drives the drive mechanisms 31 _-1 to 31 _-8 , sends signals to the air supply sources 25 _-1 to 25 _-6 , and controls the hopper units 30 _-1 to 30 _{-. 8} to open and close.

The operation of this control device will be explained below. For example, if an item in memory hoppers _21-6 and _22-6 , which are arbitrary memory hoppers, out of multiple (eight) memory hoppers, two on the left and two on the left and right, goes out, the After the time has elapsed, the weighing hopper _13-6 above the empty memory hoppers _21-6 and _22-6 opens. Next, the intermediate hopper 10 _-6 above the weighing hopper 13 _-6 opens,
Subsequently, the straight feeder _8-6 above the intermediate hopper _10-6 vibrates and supplies the article to the empty intermediate hopper _10-6 . As a result of this operation, the amount of articles accumulated on the straight feeder _8-6 decreases, and the conical plate 6
is controlled to vibrate and feed articles onto this linear feeder _8-6 .

When this operation is repeated and the amount of articles accumulated on the conical disk 6 decreases, the detection device 25 detects this and supplies the articles onto the distribution conical disk 6 from the conveyance path 41. Further, arbitrary articles in the memory hoppers 21 and 22 are selected and combined by the control device so as to have a predetermined weight, and are dropped from the discharge hopper 27 onto a bucket conveyor 28 at the same timing.

In the combination weighing device having the above configuration, the substrates _14-1 to 14-8 on which the hopper units _{30-1 to 30-8} and the drive mechanisms _31-1 to _31-8 for driving them are attached are shown in FIG. 3b. As shown, for example, any one board _14-6 is attached to the mounting plate 5e.
It can be removed and pulled forward. As a result, the drive mechanisms 17 _-6 , 18 _-6 , 19
_-6 , _23-6 , _24-6 , measuring device _16-6 , and air supply source _25-6 can be inspected and maintained all at once. When pulling out board _14-6 towards you, pull out board 1
4 _-6 A rail 14c provided at the bottom, a rail receiver 5g provided at the bottom plate 5f opposite to this, and a guide rod 14d provided at the top of the board 14 _-6 .
The board _14-6 is maintained in the drawn-out state as shown in the figure by the guide plate 5h provided on the fixed base 5 opposite thereto. It can be removed from the device 1 by pulling it out further for adjustment or the like.

In addition, intermediate, measuring,
Each memory hopper 10 _-6 , 13 _-6 , 21 _-6 , 22
_-6 is each hopper hook 1 of the fixing base 5 and the board _14-6
If the hopper is configured to be detachable from 2, 15, and 20, the hopper can be attached and detached even more easily.

In this way, the hopper units for each row are arranged on the outer peripheral surface of the device, these hopper units are attached to the front of a single board, and the drive mechanism for driving the hopper units is arranged on the back side of the board, and is housed inside the device. The structure of the device is simple, the device is compact, and maintenance is easy. In particular, the drive mechanism is unitized, making inspection easier.

Further, in the above configuration, it goes without saying that the drive mechanism _31-6 may be an electromagnetic drive or the like.

Furthermore, since the control device such as the electric circuit is arranged in the lower half of the device and the mechanism section is arranged in the upper part, maintenance is easy.

[Effect of idea]

As explained above, the combination weighing device according to the present invention has an intermediate hopper for temporarily storing a group of articles, a weighing hopper disposed below the intermediate hopper for weighing the article group, and a weighing hopper disposed below the weighing hopper for weighing the group of articles. A memory hopper for combining and discharging a group of articles to a lower stage, and a plurality of boards on which the weighing and memory hoppers are attached to the front side and the drive mechanism of the hopper and the weighing device are attached to the back side. , each board is vertically divided into a pair of vertically intermediate, weighing, memory hopper and its drive mechanism, and a weighing device, each of which is removable and can be freely pulled out radially forward, so that the hopper and drive mechanism The weighing device and measuring device can be made into a unit for each board, simplifying the structure, and
The entire device can be made smaller, and the hopper cleaning and drive mechanism and weighing device can be easily maintained.

Furthermore, since all hopper units are provided on the outer periphery of the device, the operation of the hoppers can be visually checked at all times.

Furthermore, according to the present invention, each board 14 is formed into a unit with the weighing hopper 13 and the memory hoppers 21, 22 attached to the front side, and the drive mechanism of each hopper and the weighing device 16 attached to the back side. Since they can be separated from each other in their attached state and pulled out radially forward along the rail means, in the pulled out state, each drive mechanism and each hopper corresponding to the weighing device can be inspected from above or from the side. This has an excellent practical effect in that maintenance can be easily performed, and in particular, the operating state of the weighing hopper 13 and the corresponding weighing device 16 can be easily checked.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the combination weighing device of the present invention, Fig. 2 is a top view of the same device, Fig. 3a is an enlarged view of the hopper portion of Fig. 1, and Fig. 3b is the operation of Fig. 3. FIG. 4 is a diagram showing a conventional combination weighing device. 1... Combination weighing device, 10... Intermediate hopper,
13...Measuring hopper, 14...Substrate, 16...Measuring device, 21,22...Memory hopper, 12,1
8, 19, 23, 24... Drive mechanism, 25... Air supply source.

Claims (1)

[Scope of claim for utility model registration] Intermediate hopper 1 for temporarily storing articles and supplying them to the lower stage
0; Weighing hopper 13 which is arranged below the intermediate hopper 10 and measures the weight of the article fed from the intermediate hopper 10; Wearing hopper 13 which is arranged below the weighing hopper 13 and measures the weight of the article fed from the weighing hopper 13; memory hoppers 21 and 22 for temporarily storing articles and discharging them to the lower stage; the weighing hopper 13 and memory hoppers 21 and 22 are attached to the front side 14a;
A substrate 14 on which drive mechanisms 17, 18, 19, 23, 24 for driving the intermediate hopper 10, weighing hopper 13, and memory hoppers 21, 22, respectively, and a weighing device 16 of the weighing hopper 13 are attached to b.
A plurality of substrates 14 are arranged upright in a cylindrical shape, and each of the substrates 14 is detachable and can be pulled out radially forward with the drive mechanism and measuring device attached to at least the back side of each substrate. A combination weighing device characterized by comprising; and a rail means for guiding and pulling out each board 14 radially forward in its upright state.