JPH0540213U - Goods supply equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] Stabilizes the supply amount in a vibrating-conveying article supply device that vibrates and conveys articles and supplies them to a weighing section of a weighing device or a bucket that carries the articles into the weighing devices. . [Construction] The conveyance table 24 is vibrated by the vibration driving section 23 and conveys the articles received on the sides of the enclosure plates 30 to 32 to the other end side. The articles conveyed on the conveyance surface 25 are conveyed with a layer thickness due to the gap between the conveyance surface 25 and the lower end portion 35 a of the gate plate 35. The gate plate 3 is driven by driving the stepping motor 43.
By rotating the shaft 36 of No. 5, the layer thickness of the carried-out article can be changed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an article supply device for supplying a predetermined amount of articles to a hopper or bucket such as a weighing device.

[0002]

[Prior Art]

 For example, a conventional article supply device that supplies articles to each bucket of a bucket type conveyor is configured as shown in FIG.

This article supply apparatus 10 is composed of a vibration type feeder 11, and its vibration drive unit 12 vibrates the carrier table 13 in an oblique direction A along the direction of the bucket 1 and at the one end 13a side. The received article W is conveyed to the other end 13b side.

On one end side 13a of the carrier table 13, an enclosure plate 14 for storing articles received from other supply devices without spilling is provided, and the articles supplied between the enclosure plates 14 are Then, due to the vibration of the carrier table 13, the carrier table 13 moves to the other end side 13 b and is housed in the bucket 1.

FIG. 8 shows a conventional article supply device 15 for supplying an article W to the weighing hopper 2 of the combination weighing device via the intermediate hopper 3.

This article supply device 15 is composed of a vibrating feeder 16 in the same manner as described above, and vibrates the carrier table 18 in the oblique direction A for a predetermined time by the vibration driving unit 17, and the article received at the one end side 18a is the other end. It is conveyed to the side 18b.

The articles discharged from the article supply device 15 to the intermediate hopper 3 are supplied into the weighing hopper 2 by opening and closing the gate 3 a of the intermediate hopper 3, and the weight thereof is weighed by the weighing machine 4.

In the case of the combination weighing device, a plurality of sets of the article supply device 15, the intermediate hopper 3, and the weighing hopper 2 are provided, and the combination that is the target weight is selected from the weighing values of the weighing devices 4, and the selected weighing device is selected. The objects in the hopper 2 are discharged all at once by opening and closing the gate 2a.

In such an article supply apparatus, since the amount of articles supplied to the bucket 1 and the intermediate hopper 3 is determined by the vibration time and the vibration intensity (vibration amplitude) of the conveyors 13 and 18, conventionally, the types of articles are different. The vibration intensity and vibration time were set according to the situation.

[0010]

[Problems to be solved by the device]

 However, in the conventional article supply devices 10 and 15 as described above, the variation in the amount of the articles supplied to the one end side of the transport table directly changes the quantity of the articles supplied to the bucket and the weighing hopper, and is always stable. Cannot supply quantity.

In particular, as described above, in the case of a combination weighing device which dispersively supplies articles to a plurality of weighing sections and discharges a target quantity of articles in combination based on the weighing result at each weighing section, If there is a large fluctuation in the amount of goods supplied from the device, the variation in the amount of goods supplied to each weighing unit will become large, making it impossible to carry out highly accurate combinations and reducing the operating efficiency.

An object of the present invention is to provide an article supply device that solves this problem.

[0013]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, an article supply device of the present invention comprises a feeder for vibrating and conveying an article received at one end side to the other end side, and an article conveying device arranged above the conveying surface of the feeder. A gate having a lower end portion substantially orthogonal to the direction, the lower end portion being supported so as to be movable back and forth in the conveying surface direction of the feeder, and a gate from which an external signal is received to drive the gate to move the lower end portion of the gate And a gate drive device for advancing or retreating in the transport surface direction of the feeder.

[0014]

[Action]

 In the article supply device configured as described above, the layer thickness of the article on the transport surface is regulated by the gap between the lower end of the gate and the transport surface, and when the lower end of the gate approaches the transport surface, the amount of the product supplied is increased. And the amount of goods supplied increases when the lower edge of the gate moves away from the transport surface.

[0015]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an appearance of an article supply device 20 according to an embodiment.

The feeder 21 of the article supply device 20 includes a base 22, a vibration driving unit 23 fixed on the base 22, and a carrier 24 that is vibrated by the vibration driving unit 23.

Side plates 26, 27 for guiding the articles are erected on both sides of the front side of the transfer surface 25 of the transfer table 24. Further, on both sides and the rear end of the rear portion of the transport surface 25, enclosure plates 30, 31, 32 that continuously surround the articles to be supplied to the article supply device 20 are erected. ..

Gate support holes 32 and 33 are provided at the same height above the enclosure plates 30 and 31, respectively.

Both ends 36 a and 36 b of the shaft 36 of the gate plate 35 are rotatably inserted through the gate support holes 32 and 33.

The width of the gate plate 35 is slightly shorter than the distance between the enclosure plates 30 and 31, and the length from the shaft 36 to the lower end portion 35 a is from the shaft 36 to the transfer surface 25 of the transfer table 24. It is formed longer than the distance.

Therefore, when no external force is applied to the gate plate 35, the lower end portion 35 a of the gate plate 35 is brought into contact with the transport surface 25, so that the gate plate 35 is slightly inclined.

A spur gear 40 is concentrically fixed to the one end 36 a side of the shaft 36. The flat gear 40 is provided with a slit 41.

A stepping motor 43 is attached to the enclosure plate 30, and a pinion gear 44 that meshes with the spur gear 40 is attached to the stepping motor 43.

In addition, the enclosure plate 30 detects the reference position of the gate plate 35 by allowing light to pass through the slit 41 of the spur gear 40 in a state where the lower end portion 35 a of the gate plate 35 is in contact with the transport surface 25. A photo interrupter type sensor 45 is attached.

The stepping motor 43 constitutes a gate drive device together with a motor control device 50 described later.

As shown in FIG. 2, the motor control device 50 receives a signal from the sensor 45 and a height signal input from the outside, and receives the height from the conveyance surface 25 of the lower end portion 35 of the gate plate 35. A driving pulse is output to the stepping motor 43 so that the height becomes a designated height.

The lower end portion 35 a of the gate plate 35 contacts the gate plate 35 on the inner surface of the enclosure plate 31 when the lower end portion 35 a of the gate plate 35 is rotated to a height substantially equal to the height of the guide plates 26, 27. An upper limit switch 48 for stopping the driving to 43 is attached.

Next, the operation of the article supply device 20 will be described.

First, as shown in FIG. 3A, with the gate plate 35 in contact with the transport surface 25 (reference position), the article W is supplied by another article supply device or manually.

From this state, for example, when the height signal H1 is input from the outside, a drive pulse is output from the motor control unit 50 to the stepping motor 43, and the gate plate 35 is moved to the stepping motor 43 as shown in (b) of FIG. By rotating it by a predetermined angle, the height of the lower end portion 35a with respect to the transport surface 25 becomes H1.

Therefore, the articles W supplied to the one end side of the transport table 24 are carried out to the bucket 1 in a state where the layer thickness thereof is regulated to H1. The amount of articles supplied to the bucket 1 is proportional to the layer thickness under the condition that the vibration intensity and the vibration time are constant.

Since this layer thickness is regulated to H1 by the gate plate 35, the supply amount to the bucket 1 is constant every time.

In order to increase the supply amount to the bucket 1, if the height signal H2 larger than H1 is input to the motor control unit 50, the stepping motor 43 is driven by the driving pulse corresponding to the difference between H2 and H1. By rotating the plate 35, as shown in FIG. 3C, the position of the lower end portion 35a of the gate plate 35 becomes the height H2 from the transport surface 25, and The layer thickness is also regulated to H2, and the amount of articles supplied to the bucket 1 also increases in proportion to the increase in the layer thickness.

In this article supply device 20, if the articles are always supplied at a height higher than the height of the lower end portion 35a of the gate plate 35, the articles can be discharged in a state in which the layer thickness is constant. Can be done very easily.

Although the shaft 36 of the gate plate 35 is directly rotated in this embodiment, as shown in FIG. 4, the lower portion of the gate plate 35 is moved by the slide device 60 and the link plate 61. You can

In addition to the method of changing the distance between the lower end of the gate plate and the transport surface by rotating the gate plate as in this embodiment, the gate plate 35 is moved by the slide device 60 as shown in FIG. It may be moved up and down.

Further, in the above-described embodiment, the case where the layer thickness of the article is made constant has been described, but the lower end of the gate is changed by periodically changing the article supply amount or by following the weighing result on the weighing device side. The height of the part can be changed.

Further, for example, a sensor provided on the carry-out side of the carrier table 24 detects the catch of the article at the gate portion, and when the catch is detected, the lower end portion of the gate plate 35 is greatly moved upward. You may make it move and cancel this hooking.

Further, although the article supply amount of one feeder is controlled in the above-mentioned embodiment, even in the case of the article supply device having a plurality of feeders arranged in parallel, one gate or a plurality of feeders is used. The gate can control the entire feeder or individual feed rates.

Further, in the above-described embodiment, the gate plate is directly attached to the carrier, but the gate plate 70 may be fixed to a housing different from the feeder 21, as shown in FIG. When used in a combination weighing device, the weighing value from the weighing device 4 of the weighing hopper 2 is input as a height signal to the motor control device 50, and when the weighing value is larger than a predetermined amount, the gate plate 70 is set. If the gate plate 70 is lowered and the measured value is smaller than the predetermined amount, the gate plate 70 is raised to enable highly accurate combined weighing.

[0042]

[Effect of the device]

 As described above, since the article supply device of the present invention is configured so that the lower end of the gate can be moved forward and backward with respect to the conveying surface of the feeder, it is possible to remarkably reduce the fluctuation of the carry-out amount. Even if the supply of goods to the supply device fluctuates, a stable supply of goods is always possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a control unit according to an embodiment.

FIG. 3 is a schematic side view for explaining the operation of the embodiment.

FIG. 4 is a schematic view for explaining another embodiment of the present invention.

FIG. 5 is a schematic view for explaining another embodiment of the present invention.

FIG. 6 is a schematic view for explaining another embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional device.

FIG. 8 is a perspective view showing a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 bucket 2 weighing hopper 3 intermediate hopper 4 weighing machine 20 article supply device 21 feeder 22 base 23 vibration drive unit 24 carrier 25 carrier surface 35 gate plate 36 shaft 40 spur gear 43 stepping motor 44 pinion gear 50 motor controller

Claims (1)

[Scope of utility model registration request] 1. A feeder that vibrates and conveys an article received at one end side to the other end side substantially horizontally, and a lower end portion that is arranged above the conveyance surface of the feeder and is substantially orthogonal to the article conveyance direction of the feeder. Then, the lower end of the gate is supported so as to be movable back and forth in the conveying surface direction of the feeder, and the gate is driven by receiving a signal from the outside, and the lower end of the gate is advanced in the conveying surface direction of the feeder. An article supply device having a gate drive device for exiting.