JPH0342341Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hopper in an automatic weighing device, and particularly to a hopper in an automatic weighing device used for weighing frozen foods and the like.

(Prior art) An object to be weighed is supplied to a plurality of weighing machines, and the optimum combination of weight values to obtain a predetermined constant weight is selected from among the weight values measured by each weighing machine. A combination weighing type automatic weighing device has been put into practical use, which obtains an object to be weighed with the above-mentioned constant weight by discharging only the object to be weighed from the weighing machine that has a measured value, but in this type of weighing device, Each weighing machine is equipped with a weighing hopper for storing the object to be weighed, and above each weighing hopper, when the object to be weighed is discharged from the hopper, the object to be weighed for the next weighing is quickly placed. A pool hopper will be provided to supply water.

As shown in Fig. 1, these hoppers have a hopper main body a which is open at the top and has a discharge port _a1 at the bottom, a swinging gate b for opening and closing the discharge port _a1 , and an external gate b. The structure includes a link mechanism c that opens and closes the gate b by an operating force from the gate b.
When the object to be weighed stored in the hopper is a frozen food, the following problem occurs.

That is, a portion of the ice that freezes the object to be weighed once melts and then freezes again in the hopper, so that the object to be weighed receives the weight of each inner surface of the hopper body a, especially the weight of the object to be weighed. Some of the weighed objects d adhere to the sloped surface _a2 and the gate inner surface _b1 , which becomes sloped when closed, and as shown by the chain line, some of the weighed objects d are not ejected from the hopper body a when the gate b is opened, and are deposited on both sides a above. ₂ , remains attached to _b1 . As a result, in the case of a pool hopper, the amount supplied to the weighing hopper is insufficient, and in the case of a weighing hopper, the amount of objects to be discharged to be weighed differs from the measured value, resulting in a weighing error.
This problem occurs conspicuously in the weighing hopper of a weighing machine that has not been selected for a long time during the above-mentioned combination selection, and in the pool hopper located above the weighing hopper. In this type of automatic weighing device, which has extremely high weighing accuracy, if objects to be weighed stick to or remain in the hopper due to freezing, the highly accurate weighing function of the weighing device itself becomes meaningless. Become something.

(Purpose of the invention) The purpose of this invention is to deal with the above-mentioned problems in automatic weighing devices.When weighing frozen foods, etc., the object to be weighed may freeze or adhere to the slope inside the hopper body and the inner surface of the gate. to prevent
The object of the present invention is to completely discharge the object to be weighed from the hopper body when the gate is opened, thereby preventing the occurrence of measurement errors in this type of automatic weighing device.

(Structure of the invention) The invention is structured as follows in order to achieve the above object.

That is, the hopper main body is open at the top and has a discharge port at the bottom, a swinging gate that opens and closes the discharge port, and a link mechanism that opens and closes the gate by an external operating force. In a hopper having a hopper, an inclined object receiving surface is formed by a fence-like receiving member made of a plurality of wire rods arranged in parallel, and a plurality of teeth are arranged in parallel in correspondence with the member. A comb-shaped separating member is provided, and when the gate is opened, each tooth of the separating member relatively protrudes from between each wire rod of the receiving member toward the object-to-be-measured support surface of the receiving member. Configure it as follows. In particular, in the embodiment of the present invention, in view of the fact that objects to be weighed are particularly likely to adhere to the gate and the sloped surface of the hopper body facing the gate, the gate is constructed only from a receiving member, and Other supporting members are arranged on the inclined surface of the hopper body. A separating member corresponding to the receiving member on the gate side is provided so that each tooth protrudes from between the wire rods in the receiving member toward the inner surface of the gate when the gate is in the open position, and a separating member is provided on the inclined surface of the hopper body. A separating member corresponding to the receiving member on the surface is provided, and each tooth is configured to protrude inward from between the wires of the receiving member in conjunction with the opening movement of the gate.

According to such a configuration, when the gate is closed, the object to be weighed is transported by the fence-shaped receiving member disposed on the slope inside the hopper body and the similarly fence-like receiving member forming the gate. Even if the object to be weighed freezes or adheres to these receiving members, the object to be weighed will be forcibly removed from the ice by the comb-shaped separation members when the gate is opened next time. It will be brushed off. Thereby, the object to be weighed is reliably discharged without remaining inside the hopper main body or at the gate.

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

First, the overall structure of an automatic weighing device to which the hopper of the present invention is applied will be explained with reference to FIG. 4 are arranged, and around the table 4, vibration devices 5...
A plurality of supply troughs 6...6 are arranged radially through the support base 2, and the same number of pool hoppers 7... 7 is installed. Further, on the base 1, there are weight detectors 8...8.
A plurality of weighing machines 10...10 consisting of weighing hoppers 9...9 attached to each weight detector are arranged in a circle corresponding to each of the troughs 6...6 or pool hoppers 7...7. The same number of drive devices 11...11 as the corresponding pairs of pool hoppers 7...7 and weighing hoppers 9...9 are attached to the lower surface of the support base 2 in a hanging manner. This drive device 11...11 is operated by a motor 12, and when receiving a command to discharge the object to be weighed, the pressing members 11a, 11b
Weighing hopper 9 located on the side by protruding respectively.
The object to be weighed in the pool hopper 7 is discharged into the collection chute 13, and the object to be weighed in the pool hopper 7 is thrown into the weighing hopper 9.

Next, the structure of the weighing hopper 9 will be explained with reference to FIGS. 3 and 4. The hopper 9 has a hopper main body 14 which is open at the top and has an object discharge port 14a at the bottom, and both sides of the main body 14. It consists of a pair of brackets 15, 15' fixed to the main body 14, a swinging gate 16 provided at the bottom of the main body 14 for closing the discharge port 14a, and a link mechanism 17 for opening and closing the gate 16. ing. One bracket 15 of the above brackets 15, 15'
is T-shaped and is fixed to one side of the hopper main body 14, with the part 15a extending forward from the main body 14,
That is, it protrudes to the left in the drawing, and the other bracket 15' is fixed along the front surface from the other side of the hopper main body 14, and its one end 15a' is bent so as to be parallel to the end 15a of the bracket 15. It protrudes to the front of the main body 14.

On the other hand, the link mechanism 17 includes the forwardly protruding end portions 15a and 15a of the brackets 15 and 15'.
15a', and a driven link 20, one end of which is connected to the swinging end 19a of the drive link 19. At the other end, the fulcrum X
An integral arm portion 16b is connected to the base portion 16a of the gate 16, which swings about the center. Also,
The drive link 19 has its swing fulcrum Y (shaft 18).
An extension part 19 is located on the opposite side of the swinging end 19a with reference to
b, and a return spring 21 is installed between this extension part 19b and the opposite end 15b of the bracket 15, and the extension part 1
The bracket 15 is provided with a stopper 15c that contacts the stopper 9b to restrict the swinging of the drive link 19 by the spring 21 to a fixed position. Furthermore, an operating lever 23 is fixed to the drive link 19 via a U-shaped connecting member 22, and the end of this operating lever 23 is located close to the pressing member 11b of the drive device 11 shown in FIG. . Here, the gate 16 closes the discharge port 14a of the main body 14 with the extension part 19b of the drive link 19 in contact with the stopper 15c, and in this state, the drive link 19 and the driven link 20 are to act as a toggle mechanism. It is configured to form a substantially straight line.

The gate 16 is formed into a fence shape by planting a plurality of wire rods 16c .

In addition, in the open position of the gate 16 at the front of the lower part of the hopper body 14, both ends are connected to the hopper body 14.
A U-shaped base 24a fixed to both sides of the base 24a, and a plurality of teeth 24b fixed parallel to each other on the base 24a.
A comb-shaped object separation member 24 consisting of ...24b
Gate 1 is provided as shown by the chain line in FIG.
Each wire rod 16c in the gate 16 when the gate 6 is opened...
16c and each tooth 24b in the separation member 24...
24b intersect with each other, so that the teeth 24b...24b relatively protrude toward the inner surface of the gate.

On the other hand, the inclined surface 1 inside the hopper body 14
4b, as shown in Figures 3, 4 and 5,
A fence-shaped object receiving member 25 and a corresponding comb-shaped object separating member 26 are disposed one on top of the other. The supporting member 25 is made up of a plurality of wire rods 25a...25a arranged in parallel in the longitudinal direction, and upper and lower connecting members 25b, 25b that connect the upper and lower ends of each wire rod 25a...25a, respectively. 2
5a...25a form an inclined object receiving surface. The separating member 26 also includes a plurality of teeth 26a...26a arranged in parallel in the vertical direction, and a connecting member 26b to which the upper portions of these teeth are fixedly connected. They are located between the wire rods 25a...25a in the receiving member 25, respectively. And wire rods 25a...25 in the above-mentioned supporting member 25
A supporting member 27 with bent right and left ends is fixed in the horizontal direction on the upper part of the separating member 26, and teeth 26a', 26a' located on both left and right sides of the separation member 26 are attached to the bent ends 27a, 27a. The upper end is rotatably supported using screws 28, 28, and the lower part of the separating member 26 can swing about the axis Z of the screws 28, 28 so as to move away from the inclined surface 14b. It is said that

Links 29, 29 for swinging the separation member 26 are provided on the outside of both sides of the hopper body 14. As shown in FIG. 3, the links 29, 29 each have an elongated hole 29b at an upper end 29a, and are connected to the base 16a (arm portion) of the gate 16 by screws 30 engaged in the elongated holes 29b. 16b)
The lower end portion 29c is connected to the lower portions of the teeth 26a' on both sides of the separation member 26 by screws 31. Here, guide holes 14c, 14c are provided at the bottom of both sides of the hopper body 14.
are drilled through the holes 14c, 14c, respectively, and the screws 31, 31 pass through the holes 14c, 14c. And gate 16
When the is opened in the direction B, the upper part of the link 29 is first swung in the direction D, and then the lower end 29c of the link 29 is guided into the guide hole 14c and moved diagonally upward to the left in the drawing. By moving the separating member 26, the separating member 26 is swung in the C direction about the axis Z. At this time,
Each of the separation members 26 26a...26a, 26a', 2
The lower part of 6a' relatively protrudes inward from the hopper from between the wire rods 25a...25a of the object receiving member 25.

Next, the operation of the above embodiment will be explained.

From the distribution table 4 shown in FIG. 2, each trough 6...
6 and pool hopper 7... each weighing hopper 9 via 7
The objects to be weighed distributed and supplied to ...9 are weighed by each weight detector 8...8, and the optimal combination for obtaining a predetermined constant weight is selected from among the measured values. When the gate 16 in the weighing hopper 9 is opened by the drive device 11, the objects to be weighed are transported to the lower collecting chute 13.
They are collected by the chute 13 and then supplied to a packaging device (not shown) provided below. Further, the weighing hopper 9 from which the object to be weighed has been discharged is immediately supplied with the object to be weighed from the hopper 7 by opening the gate 7a of the pool hopper 7 located above by the operation of the drive device 11. Prepare for the next weigh-in.

In this case, in the weighing hopper 9, the end of the operating lever 23 is pressed by the protrusion of the pressing member 11b of the drive device 11, so that
As shown by the chain line in FIG. 3, the lever 23 and the drive link 19 are integrally rotated in the direction A against the return spring 21, and the rotation of the drive link 19 causes The gate 16 is rotated in the direction B, and the discharge port 14a of the main body 14 is opened. Further, when the pressing member 11b of the drive device 11 retreats, each link 19, 20 is returned to the position shown by the solid line in FIG. 3 by the tensile force of the return spring 21. Close.

However, if the object to be weighed is frozen food, etc.
After a part of the ice that freezes the object to be weighed is once melted, it freezes again in the hopper main body 14, and as shown in FIG. 6, a part of the object to be weighed X...
The X adheres to the receiving member 25 that receives the load and the gate 16 in the closed state. In particular, this phenomenon becomes more noticeable when the weighing machine 10 is not selected for a long time when selecting a combination. However, since the receiving member 25 and the gate 16 are shaped like a fence, the area of contact with the object to be weighed is small, and icing is largely prevented. On the other hand, a comb-shaped separation member 24 is provided at the open position of the gate 16 in the lower part of the hopper body 14, and a slanted surface 14 inside the hopper body 14 is provided.
b is provided with a comb-shaped separation member 26 corresponding to the receiving member 25, so that even if there is an object to be weighed that has frozen or adhered to the receiving member 25 and the gate 16, the adhesion force will be reduced. is weakly gate 1
6, the ice is easily peeled off by these separating members 24 and 26 and is forcibly removed.

That is, as shown in FIG. 6, on the gate 16 side, as the gate 16 rotates, each wire 16c
...16c is each tooth 24b...24 of the separation member 24
b, the teeth 24b...24b intersect with the wire rod 16c.
. . . From between the wires 16c, the object to be weighed freezes and protrudes relatively to the surface to which it is attached, and the object to be measured adhering to these wire rods is forcibly brushed off. Additionally, as the gate 16 opens, the hopper body 14 shown in FIG.
Since the links 29, 29 disposed on the left and right outer sides of the separating member 26 are moved diagonally upward to the left in the drawing, each of the teeth 26a...26a, 26a', 26a' is rotated in the C direction, and each wire rod 25a of the receiving member 25...
The objects to be weighed which protrude relatively inward from between the wire rods 25a and are attached to the wire rods 25a...25a are forcibly removed. As a result, the objects to be weighed that have frozen or adhered to the gate 16 and the object receiving member 25 are completely discharged from the hopper main body 14 when the gate 16 is opened, without remaining inside the hopper main body 14. Become.

In addition, the gate 16 and the object receiving member 25
Each wire rod 16c...16c and 25a...25 in
The intervals a are relatively wide, and this is because the hopper 9 in the above embodiment is used for weighing relatively large items such as scallops. Therefore, when the object to be measured is a relatively small item, the wire rods 16c...16c and 25a
...25a can be arranged at narrower intervals, and problems such as leakage of the object to be measured from these gaps will not occur. Note that the objects to be weighed are not limited to frozen foods, but also those that are sticky or sticky (for example, sliced cheese, snack foods, boiled beans, salt and pepper, rice crackers, cut rice cakes, candies, etc.) Of course, this applies.

Furthermore, although the above embodiment is an application of the present invention to a weighing hopper, the present invention can also be applied to a pool hopper with a similar configuration.

(Effects of the invention) As described above, according to the invention, even when weighing items that are likely to freeze or adhere to the inner surface of the hopper body, such as frozen foods, this type of object to be weighed will remain inside the hopper body. It will be completely expelled. In the case of a weighing hopper, this prevents measurement errors caused by objects to be weighed remaining inside the hopper, and in the case of a pool hopper, problems such as insufficient supply of objects to the weighing hopper can be prevented. This improves the measurement accuracy of the automatic weighing device. In particular, according to the present invention, objects to be weighed that have frozen or adhered to the weighing hopper of a weighing machine that has not been selected for a long time or the pool hopper located above it will be forcibly removed. These hoppers are reliably discharged from inside the hopper body.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a conventional hopper, Fig. 2 is a longitudinal sectional front view of the entire automatic weighing device to which the present invention is applied, and Figs. 3 and 4 are a side view and a plan view showing an embodiment of the hopper of the present invention. , Figures 5 and 6 are V in Figure 4.
They are a vertical front view and a vertical side view taken along the -V line and the - line. 7...Pool hopper, 9...Measuring hopper, 14
...Hopper body, 14b...Slanted surface, 16...Gate (receiving member), 16c, 25a...Wire rod, 1
7... Link mechanism, 24, 26... Separation member, 2
4b, 26a, 26a'...teeth, 25...supporting member.

Claims (1)

[Claims for Utility Model Registration] (1) A hopper body with an open top and a discharge port provided at the bottom, a swinging gate that opens and closes the discharge port, and a hopper body that is opened at the top and provided with a discharge port at the bottom; A hopper having a link mechanism for opening and closing a gate, in which an inclined object receiving surface is formed by a fence-like receiving member formed by a plurality of wire rods arranged in parallel, A comb-shaped separating member having a plurality of teeth arranged in parallel is provided in correspondence with the member, and when the gate is opened, each tooth of the separating member separates the receiving member from between each wire of the receiving member. A hopper in an automatic weighing device, characterized in that the hopper is configured to protrude toward a support surface for an object to be weighed. (2) The inclined object receiving surface is an inclined surface of the gate and the hopper body that faces the gate. Another receiving member is disposed, and the separation member corresponding to the receiving member on the gate side has each tooth relatively protruding from between the wire rods in the receiving member toward the inner surface of the gate when the gate is in the open position. Further, a separation member corresponding to the receiving member on the inclined surface of the hopper body is provided on the inclined surface, and in conjunction with the opening movement of the gate, each tooth moves from between each wire of the receiving member to the inside of the hopper main body. The hopper according to claim 1 of the utility model registration claim, which has become prominent in the industry.