JPH0972775A - Metric system for thin rod material and corrective supply mechanism therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the metric accuracy by providing a metric space formed at the lower end of a shoot mechanism, a shutter member disposed at the inlet of metric space in order to freely open/close the inlet, a metric mechanism, a corrective supply mechanism for deficient thin rod body, etc. SOLUTION: Thin rod bodies B are fed to first and second hoppers 4, 11 under a condition where the shutter mechanism 30 at main metric section 2 is opened and the bottom hatch 34 at a metric space 6 is closed. Upon operation of a metric system 1, rod bodies B at the hopper 4 fall down through a discharge port 18 to fill a first shoot 5 and the space 6. On the other hand, the rod bodies B at the hopper 11 are discharged through the discharge port 18 to the base end part of an oscillatory conveyor 14. In this regard, the movable troughs 20a of the shoots 5, 12 moved up and down and the including crosspiece part 19 acts to press a group of thin rod bodies downward. Subsequently, a hatch 34 is opened to throw the thin rod bodies into a metric hopper 8 where the rods are weighed by means of a weight measuring unit 9. A controller controls the drive motor for corrective supply mechanism 3 until the measurement reaches the weight value of product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating device for a weighing device, a correction supply mechanism and a chute mechanism.

[0002] More specifically, a measuring device for dividing a small-diameter rod body containing spaghetti, dried noodles and the like into a product of a predetermined weight and dividing it into predetermined weights, and an initial weighing (so-called rough measurement) in the measuring device. (Measurement) After that, the small diameter rod group is packed by shaking the correction supply mechanism for replenishing the small diameter rod body to bring it close to a predetermined weight with accuracy and the chute mechanism that conveys the small diameter rod body in the weighing device. Reciprocating device for.

[0003]

2. Description of the Related Art When the small diameter rods are put together in a predetermined weight, generally, in order to make the weight as close as possible to a predetermined weight and less than the predetermined weight, the thin diameter rods are placed in a measuring space having a constant volume. Fill and weigh. Then, at least one step of correction supply for replenishing the number of small-diameter rod bodies corresponding to the difference between the predetermined weight value and the measured value is performed.

The conventional small diameter rod measuring device is also equipped with a measuring space having a predetermined volume. For example, the space 10 of the large-volume supply device 9 disclosed in Japanese Patent Laid-Open No. 59-188525, and the actual opening number 57-646.
The space in the impeller 14 disclosed in Japanese Patent No. 33 corresponds to this. However, in order to obtain a small-diameter rod group of a predetermined weight accurately and quickly, it is necessary to prevent the amount of the small-diameter rod body initially filled in the measuring space having a constant volume from varying for each measurement. is there. That is, if the filled small diameter rods are not aligned and the small diameter rods themselves are curved, a large gap is created between the small diameter rods, and the initial weight increases with each filling. It will vary. As a result, it is necessary to increase the number of correction supply, and the supply amount of the small-diameter rod body at the time of correction is very large and the correction range becomes large. Note that the above publication does not suggest such a problem.

In order to solve the above problem, the applicant of the present invention has proposed to push the small diameter rod body into the measuring space in a substantially horizontal direction by a vibrating conveyor (see Japanese Utility Model Laid-Open No. 6-7022).

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a weighing device capable of more effectively filling a measuring space with a small diameter rod body in a state where the gap is reduced. It is another object of the present invention to provide a correction supply mechanism that can surely insert a predetermined number of small diameter rods into the measuring space during correction supply. Further, it is another object of the present invention to provide a chute mechanism reciprocating device suitable for reducing the gap between the small diameter rods and bringing them into a dense state.

[0007]

SUMMARY OF THE INVENTION The weighing device of the present invention has a chute mechanism for carrying a large number of aligned thin rods by their own weight, and a desired chute mechanism formed at the lower end of the chute mechanism. A weighing space having a volume capable of accommodating a small number of small diameter rods corresponding to a value slightly smaller than the weight value, and an entrance of the measuring space into which the small diameter rods can be freely opened and closed. A shutter member for prohibiting, a weighing mechanism for weighing the thin rods in the weighing space, and the number of thin rods insufficient for a desired weight value are supplied based on the measurement value of the weighing mechanism. And a reciprocating device for pushing at least a part of the chute mechanism back and forth in the conveying direction and the opposite direction to push the thin rod into the measuring space. Characterize.

Therefore, when the small-diameter rod body is filled in the measuring space, in addition to its own weight, the chute mechanism is rocked up and down by the reciprocating device, so that the direction of the small-diameter rod body is slightly different. Even if it is curved, it will be naturally aligned and packed in a dense state.
As a result, the weight value of the small-diameter rod body filled in the weighing space is always a substantially constant value, and the correction range of the correction supply mechanism is narrowed, resulting in a very large variation in the final product weight value. Less.

Next, the correction supply mechanism of the present invention is a mechanism for replenishing the small diameter rods by a shortage of the desired weight value, and conveys a large number of aligned small diameter rods by their own weight. And a reciprocating device for reciprocally reciprocating at least a part of the chute mechanism in the transport direction and the opposite direction to push the small-diameter rod into the measuring space, and at the lower end of the chute mechanism. A vibrating conveyor for transporting the arranged thin rod toward the weighing space of the thin rod weighing device, and a gap at the end of the vibrating conveyor for passing the thin rod. It is provided with a gate mechanism for forming and a charging means arranged adjacently on the downstream side of the gate mechanism for continuously charging a predetermined number of thin rods into the measuring space. , The charging means is
It is characterized in that it has an alignment protrusion for aligning the thin rods on its conveying surface.

Therefore, when the small-diameter rod is fed to the vibrating conveyor, in addition to its own weight, the chute mechanism is swung up and down by the reciprocating device, so that even if the direction of the small-diameter rod is slightly different, In addition, even if it is curved, it will naturally line up and become a dense state. Since the small-diameter rod body is pressed by the vibrating conveyor as it is toward the gap of the gate mechanism, it can be carried into the feeding means through the gap without interruption.

That is, the thin rods are reliably put into the measuring space by a predetermined number. As a result, the correction supply is highly accurate. If such a correction supply mechanism is provided in the measuring device, a more accurate measuring device can be obtained.

Next, the reciprocating device of the chute mechanism of the present invention is a device for swinging the chute mechanism in the measuring device of the small diameter rod substantially vertically, and is fixed to the motor and the output shaft of the motor. A cam member, a cam contact portion formed on a trough that constitutes the chute mechanism, and a spring member interposed between the cam contact portion and the machine frame. I am trying.

With such a feature, the structure is simplified, and moreover, a substantially uniform displacement velocity is generated in the vertical direction, so that a suitable rocking motion can be obtained. As a result, the small-diameter rod group in the chute mechanism is effectively pressed downward and becomes a dense state.

It should be noted that, in the above-mentioned correction supply mechanism, the charging means is constituted by a gear having teeth formed so that a predetermined number of small-diameter rod bodies can be placed between the teeth by a simple structure. It is preferable that a predetermined number of thin rods can be charged.

Further, the shutter member in the measuring device is composed of a flat plate rotatably driven in a substantially horizontal plane, and one end of the flat plate is divided into a plurality of aligned small diameter rod bodies. It is preferable that the measuring space is closed by entering from a substantially end side of the body so that the measuring space can be smoothly closed without breaking or damaging the small diameter rod body.

As a result, according to the present measuring device, it is possible to accurately measure even a small-diameter rod which is difficult to handle. Moreover, if the weight value of one thin rod is previously input to the device, it can be accurately corrected by the correction supply mechanism, so only one measuring mechanism is required.
Weighing can be done only once, and the overall processing time can be shortened.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a reciprocating device for a weighing device, a correction supply mechanism and a chute mechanism of the present invention will be described based on an embodiment shown in the accompanying drawings.

FIG. 1 is a schematic side view showing an embodiment of the weighing device of the present invention.

In the figure, 1 is a weighing device, which is a main weighing unit 2.
And the correction supply mechanism 3.

The main weighing unit 2 is equipped with a large number of small rods B for weighing.
A first hopper 4 for storing the first hopper 4, a first chute mechanism 5 extending from the first hopper 4 toward a downstream side (downward) thereof, a weighing space 6 arranged at a lower end of the first chute mechanism 5, It comprises a first reciprocating device 7 for swinging the one-shoot mechanism 5 in the vertical direction and a weighing hopper 8. The weighing hopper 8 is equipped with a well-known load cell type weight measuring device 9. Reference numeral 10 is a standby hopper for the finished products.

On the other hand, the correction supply mechanism 3 has a second hopper 11 for storing the small diameter rod B for replenishment, a second chute mechanism 12 extending from the second hopper 11 toward the downstream side (downward) thereof, The second reciprocating device 13 for rocking the second chute mechanism 12 in the vertical direction, the vibration conveyor 14 extending substantially horizontally at the lower end of the second chute mechanism 12 and its vibrator 15, and the downstream end of the vibration conveyor 14 ( The charging means 16 is arranged at the end.

The first hopper 4 and the second hopper 1
Both 1 are equipped with an inlet 17 at the upper end and an outlet 18 opened at the lower end toward the chute mechanisms 5 and 12, respectively.

Both the first chute mechanism 5 and the second chute mechanism 12 are provided with a pair of troughs 20a, 20b with their inclined crosspieces 19 facing each other. In the case of this embodiment, all the chute mechanisms 5 and 12 have troughs 20 on the right side in the drawing.
b is fixed to the machine frame 21 and the hoppers 4 and 11, and the left trough 20a is the right trough (hereinafter referred to as a fixed trough) 2
It is movable up and down (indicated by arrow X in the figure) in parallel with 0b. The left trough (hereinafter referred to as the movable trough) 20a is vertically moved by the reciprocating drive devices 7 and 13 mounted on the machine frame 21. Note that both troughs 20a and 20b may be moved simultaneously, that is, the entire chute mechanism may be moved up and down, but the thin rods are condensed (here, an operation of reducing the gap between the thin rods to make them denser. The effect of making the same) is improved when only one is driven as described above.

As shown in FIG. 2, each of the reciprocating drive devices 7 and 13 has a motor 22 whose output shaft 22a is fixedly provided with a cam 23 as a main component. An abutting member 2 that abuts the cam 23 on each movable trough 20a.
4 is provided in a protruding manner, while the machine frame 21 is provided with a supporting portion 25 in a protruding manner. The abutment member 24, and thus the movable trough 20a, is supported by the support portion 25 with a compression coil spring 26 interposed. With this configuration, the cam 23 pushes down the movable trough 20a as the motor 22 rotates, and then the compression coil spring 26
Pushes up the movable trough 20a to reciprocate.

Since one surface 27 of the four side surfaces of the measuring space 6 in the main measuring portion 2 can be moved forward and backward by the adjusting mechanism 28, its volume can be changed and adjusted.

The system of the adjusting mechanism 28 is not particularly limited,
For example, it may be simple to move the screw rod 29 back and forth by a motor or manually to move the one surface 27 back and forth.

A shutter mechanism 30 for opening and closing is attached to the upper opening of the weighing space 6.

This shutter mechanism 30, as will be apparent by referring also to FIG. 3, includes a motor 31 and this motor 3.
It is composed of a substantially L-shaped flat plate (hereinafter, referred to as a shutter plate) 32 which is rotated by 1 in a horizontal plane. Then, by rotating, the shutter plate 32 opens and closes the upper end of the weighing space 6 by passing through the slit 33 between the first chute mechanism 5 and the weighing space 6 connected to each other. At that time, particularly the corner portion 32a of the shutter plate 32 enters into the small diameter rod body group which is continuously filled from the first chute mechanism 5 to the measuring space 6 so as to partition the thin diameter rod body. There is no risk of breaking the body.

The shape of the shutter plate is not particularly limited to the L shape, and may be rectangular, square, circular or elliptical. In short, any shape may be used as long as it can enter the small-diameter rod group from a minute portion such as a corner portion that is not caught by the small-diameter rod body B and close the upper end of the weighing space 6.

As shown in FIG. 1, the metering space 6 has a curved surface at its corners (indicated by R in the figure) so that the small diameter rods B can be filled into the space without gaps. ). In other words, the so-called are are taken.

At the bottom of the weighing space 6, the shaft portion 3 is provided.
A hatch 34 that can be opened and closed by rotating around 4a is provided. By opening this hatch 34, the weighing space 6
The thin rod B inside is dropped into the weighing hopper 8.

On the other hand, the vibrating conveyor 14 provided at the lower end of the second chute 12 in the correction supply mechanism 3 is
By the shaker 15 mounted on the
Direction). In this embodiment, the vibrating conveyor 14 is tilted slightly downward toward the downstream in order to improve the effect of condensing the small diameter rods.

As shown in FIGS. 1 and 4, a gate mechanism 35 is formed at the end of the vibrating conveyor 14 to limit the amount of the small diameter rods B fed into the charging means 16 to a substantially constant value. The gate mechanism 35 is composed of a flat plate-shaped gate 35a extending downward from the upper part of the vibrating conveyor 14 substantially perpendicular to the vibrating conveyor surface, and between the vibrating conveyor surface and the lower edge of the flat-plate gate 35a. A gap having a predetermined dimension S is formed in the. The gap size S is determined by the flat gate 35a depending on the type of the small diameter rod body to be measured.
It is adjustable by moving it up and down and re-fixing it.

Further, as shown in FIGS. 1 and 4, the charging means 16 has a gear 37 which is rotationally driven by a motor 36.
It is composed of The gear 37 may be specially manufactured in accordance with the diameter or the cross-sectional shape of the thin rod body to be measured, or an existing gear having a suitable tooth shape may be adopted. Further, the thickness of the gear 37 may be changed according to the type of the small diameter rod body, or a plurality of thin gears may be arranged separately.

By the way, the motor 3 for driving the gear 37
Reference numeral 6 denotes a device that can rotate the gear 37 by a predetermined rotation angle according to a command from a control device (not shown).
Then, when the value measured by the weight measuring device 9 is transmitted to the control device, the motor 36 calculates the difference between the desired product weight and this measured value, and rotates by the number of pitches corresponding to this difference. Is configured. The control device is previously provided with data on how many (ggrams) of small diameter rods can be placed per tooth of the gear 37, and the motor 36 is provided by a pitch corresponding to the “difference”. An instruction to rotate is given and the necessary correction supply is performed.

By the way, plate-shaped or rod-shaped convex portions may be provided at predetermined intervals on the surface of the vibrating conveyor 14 in the direction in which the small diameter rods are aligned, that is, in the direction orthogonal to the conveying direction. As an example, for spaghetti having a diameter of a thin rod of about 1.2 mm, a protrusion having a plate thickness of about 1.6 mm may be used.

The weighing device 1 constructed as described above operates as follows.

First, the small-diameter rod B is supplied to the first and second hoppers 4 and 11 with the shutter mechanism 30 of the main weighing section 2 opened and the bottom hatch 34 of the weighing space 6 closed. When the weighing device 1 operates in this state, the small-diameter rod B of the first hopper 4 falls from the lower discharge port 18 and fills the first chute 5 and the weighing space 6. On the other hand, the thin rod B of the second hopper 11 is discharged from the lower discharge port 18 to the base end of the vibration conveyor 14. At this time, since the movable troughs 20a of the first and second chutes 5 and 12 are moving up and down, the slender bar portion 19 of the movable troughs 20a pushes the small diameter rod group downward. In particular, the small-diameter rod body B is filled in the measuring space 6 of the main measuring portion 2 in a state where the gap is greatly reduced. Usually, the vertical movement of the movable trough 20a is about 10 to 20 cycles per second, and the amplitude is ± 1 to ±.
It is made in about 3 mm. This is different from the vibration only for preventing clogging in the chute, and has the effect of pressing the thin rod body downward by decreasing the frequency and increasing the amplitude. Of course, these frequencies and amplitudes can be changed according to the diameter and cross-sectional shape of the thin rod. After the vertical movement continues for about 1 to 3 seconds, the shutter mechanism 30 operates and the shutter plate 32 enters so as to partition the small diameter rod group to close the upper end of the weighing space 6. Therefore, the measuring space 6 is always packed with a constant and desired amount of the small-diameter rod body.

Then, the bottom hatch 34 of the weighing space 6 is opened, the thin rod inside is put into the weighing hopper 8, and the weight of the thin rod inside the weighing hopper 8 is measured by the weight measuring device 9. The weight measuring device 9 transmits the measurement data to a control device (not shown).

On the other hand, also in the correction supply mechanism 3, the small diameter rod group is sufficiently condensed from the second chute 12 to the vibration conveyor 14 by the operation of the movable trough 20a.
Further, the group of small diameter rods is pressed into the gap S of the gate mechanism 35 by the vibration conveyor 14, so that the small diameter rods are sent to the gear 37 of the charging means 16 without interruption and in a fixed amount.

Then, in the control device, the motor 3 for driving the gear rotation of the correction supply mechanism 3 is used until the weight measurement value of the thin rod in the weighing hopper 8 reaches the desired weight value of the product.
Instruct 6 to work. Further, the weight measurement data and the desired weight value of the product are compared and calculated to calculate the difference, and the gear rotation driving motor 36 of the correction supply mechanism 3 is instructed to operate by the difference. Good.

As a result of the above, the gear 37 adds a small-diameter rod body corresponding to the appropriate correction amount into the measuring space 6.

In this way, the small-diameter rod body corresponding to the accurate weight value of the product is put into the weighing hopper 8. When the operation of the correction supply mechanism 3 is completed, the bottom of the weighing hopper 8 is opened, and the small-diameter rod body that has become one lump is discharged to the standby 10 below it, and the weighing operation is completed. The weighing device 1 repeats the above series of operations to generate a large number of products.

The movable trough 2 of the first chute 5
0a and the movable trough 20b of the second chute 12 need not necessarily have the same vertical movement cycle and amplitude.
They may be made different depending on the cross-sectional shape of the small-diameter rod and the change in the amount of outflow due to the length.

[0045]

Since the measuring device of the present invention can dramatically reduce the variation in the amount of the small diameter rods filled in the measuring space, the correction supply amount of the small diameter rods may be small. Also, the fluctuation of the correction supply amount is small. Therefore, the weighing accuracy of the weighing device is improved and the operation of the weighing device becomes smooth.
In addition, the configuration of the correction supply mechanism is also simplified.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a weighing device of the present invention.

2 is a perspective view showing an example of a main part of a reciprocating drive device in the weighing device of FIG. 1. FIG.

3 is a perspective view showing an example of a shutter mechanism in the weighing device of FIG. 1. FIG.

FIG. 4 is a perspective view showing an example of a gate mechanism and a charging means in the weighing device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Measuring device 2 ... Main measuring part 3 ... Correction supply mechanism 5 ... 1st chute 6 ... Measuring space 7 ... 1st reciprocating device 12 ... 2nd chute 13・ ・ ・ Second reciprocating device 14 ・ ・ ・ Vibration conveyor 16 ・ ・ ・ Injection means 20a ・ ・ Movable trough 20b ・ ・ Fixed trough 22 ・ ・ ・ Motor 23 ・ ・ ・ Cam 26 ・ ・ ・ Compression coil spring 30 ・ ・ ・Shutter mechanism 32 ... Shutter plate 35 ... Gate mechanism

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G01G 13/06 G01G 13/06 A

Claims (6)

[Claims] 1. A chute mechanism for transporting a large number of aligned small diameter rods by their own weight, and a chute mechanism formed at the lower end of the chute mechanism corresponding to a value slightly smaller than a desired weight value. A measuring space having a volume capable of accommodating the small diameter rod body, a shutter member that is openably and closably equipped at an inlet portion of the measuring space, and that prohibits the small diameter rod body from entering the measuring space, and the measuring space. At least one of a chute mechanism, a weighing mechanism for weighing the small-diameter rod body therein, a correction supply mechanism for supplying a number of thin-diameter rod bodies insufficient for a desired weight value based on the measurement value of the weighing mechanism. A reciprocating device for reciprocating part of the reciprocating direction in the conveying direction and the opposite direction to push the small-diameter rod into the measuring space. 2. A chute mechanism for carrying a large number of aligned small-diameter rods by their own weight, and at least a part of the chute mechanism is repeatedly reciprocated in the carrying direction and in the opposite direction to repeatedly reciprocate the same. A reciprocating device for pushing a body into the measuring space, and a vibration conveyer disposed at the lower end of the chute mechanism for conveying the thin rod body toward the measuring space of the thin rod body weighing device. , A gate mechanism arranged at the end of the vibrating conveyor for forming a gap for allowing the small diameter rod body to pass, and a small diameter rod body disposed adjacent to the downstream side of the gate mechanism. And a charging means for continuously charging the measuring space into the measuring space, wherein the charging means has an alignment protrusion for aligning the small diameter rods on its conveying surface. To supplement the desired weight value of the diameter rod body to make up for it Compensation supply mechanism. 3. The weighing device according to claim 1, comprising the correction supply mechanism according to claim 2 as the correction supply mechanism. 4. The correction supply mechanism according to claim 2, wherein the feeding means is composed of a gear having teeth formed so that a predetermined number of thin rods can be placed between the teeth. 5. The shutter member is composed of a flat plate that is rotationally driven in a substantially horizontal plane, and one end of the flat plate is a substantially end portion of the small diameter rod body so as to partition a large number of aligned small diameter rod bodies. The weighing device according to claim 1, wherein the weighing device is configured to enter from a side and close the weighing space. 6. A motor, a cam member fixed to an output shaft of the motor, a cam abutting portion formed on a trough constituting the chute mechanism, and between the cam abutting portion and the machine frame. A reciprocating device of a chute mechanism in a measuring device of a small diameter rod body, which comprises an interposed spring member.