JPH067330Y2 - Weighing pan device in a weight sorter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a weighing pan device in a weight sorter.

[Conventional technology]

In order to measure the weighing objects according to a predetermined weight classification and sort them into a set value group in the course of progress of the weight measuring and sorting device attached to the endless conveyor as it rotates, center the bearing shaft of the weighing pan containing the articles. As an example, the weighing pan is laid down to the side of the vertical link so that the contents are discharged, or the weighing pan is directly attached to the mounting rod to the conveyor of the sorting device, and the weighing pan is placed downward during measurement. There are various types of modes, such as the one that inverts, and the one in which a frame-type link is axially mounted on the front link that is fixed to the above-mentioned mounting rod, and a weighing pan is attached to this to make it possible to fall down. It has been known.

[Problems to be solved by the device]

In these existing weighing / sorting devices, the contents on the weighing plate may be unstable or unstable due to movement or shaking of the conveyor in the course of progress of the conveyor depending on the shape and size of the product such as fruits and vegetables. There are some deficiencies and drawbacks that make it impossible to obtain accurate measurements and to make satisfactory selections due to vibration.

Therefore, the present invention has been established for the purpose of providing a weighing / sorting device that enables stable and smooth transition and measurement regardless of the article.

[Means for Solving the Problems]

In the present invention, the Roberval mechanism is improved so that the measured articles are discharged downward. The details will be described below with reference to the drawings.

Drive sprocket 2 and driven sprocket 3 on the machine casing 1
A large number of mounting bars 5 are mounted at regular intervals between the endless chain conveyors 4 on both sides which are mounted on the vehicle and rotate in the front-rear direction, and a weighing dish device 6 is mounted on each mounting bar 5. . Reference numeral 7 is a hanging metal fitting fixed to the lower surface of the mounting bar 5, and engaging portions 9, 9 are provided on the facing surfaces of both legs 8, 8 thereof, and a front vertical link 10 slides its upper end portion 10 '. I am letting you. A locking piece 11 is provided on one of the legs 8 in parallel with the same leg, and one upper end 10 'of the front vertical link 10 is locked when the device falls, as shown in FIG. It has become so. Reference numerals 12 and 13 denote link-shaped arms that vertically oppose each other at regular intervals.
Is freely rotatable, and the tip of the lower arm 13 also has a link 10
To 15 points. Reference numeral 16 is a rear vertical link, and upper and lower link arms 12 and 13 are rotatably mounted on supporting shafts 17 and 18, respectively. A weighing pan 19 is fixed to the upper part of the rear vertical link 16, and one side of the lower part of the link is engaged with a measurement rail 20 parallel to the body 1 side and disengaged when a predetermined weight is met at a predetermined position. A measuring piece 21 is formed on the other side, and a roller 22 is projected on the other side. Two
Reference numeral 3 is a restoring spring of the measuring piece 21, 24 is a stopper fixedly mounted on the front surface of the upper link-shaped arm 12, and is brought into contact with the front surface of the lower link-shaped arm 13 during weighing so that the weighing dish device 6 can move in the traveling direction. 25, which prevents the resulting instability and prevents over-conversion of the weighing pan 19 during rotation, indicates the measuring balance.

[Action]

Since the present invention is configured as described above, the upper and lower link-shaped arms 12, 12 are in the process of accommodating the desired articles in the weighing pan 19 and the weighing device 6 advances in the direction of arrow A as the chain conveyor 4 rotates. The measurement piece 21 stably advances on the measurement rail 20 by the Roberval mechanism formed by 13 and the front and rear vertical links 10 and 16, and the weight of the weighing pan 19 during measurement is applied in the direction of arrow B through the rear vertical link 16. The vertical link 10 on the front part can rotate about the support shaft 14 as an axis, and can be placed on the facing surfaces of both legs of the hanging bracket 7. The upper end portion 10 'of the link 10 is slidably engaged with the provided engaging portions 9 and 9 to rotate the weighing device 6 only in the advancing direction A side. Further, the setting of the stopper 24 serves to keep the posture of the apparatus 6 at the time of weighing stable. When the weighing object on the weighing pan 19 is measured by the measuring scale 25 and corresponds to a predetermined weight, a part of the measuring rail 20 corresponding to the weighing position is lowered, and the measuring piece 21 is disengaged from the measuring rail 20. With respect to the hanging metal fitting 7 integrated with the mounting bar 5, the entire weighing device 6 is such that the upper and lower link upper arms 12 and 13 and the front and rear vertical links 10 and 16 maintain their respective correlations around the support shaft 14. Rotating in the direction of arrow C, the weighing pan 19 falls down and discharges the contents. The measuring scale 25, the measuring rail 20, and the measuring piece 21 described above.
Correlation with is a known technique in terms of configuration and operation, and is omitted in the drawing.

[Effect of device]

According to the present invention, the weighing device having the Roberval mechanism as described above is not directly fixed to the mounting bar and connected to the chain conveyor, but the mounting bar is provided with a suspending metal member between it and the front vertical link. Rocking while mounting the engaging part, the locking piece, the stopper, etc. to stabilize the smooth and accurate operation of the rotary motion and to secure the accommodation support posture of the weighing pan in the vertical direction at the rear vertical link at all times. Eliminating the cause of measurement anxiety due to displacement, etc., and improving the practical effect of normal continuous weight selection by smoothly performing the backward rotary discharge operation around the spindle penetrated through both legs of the hanging metal fitting. It is a great deal to do.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention, FIGS. 2 and 3 show the same operation, FIG. 2 is a left side view of an essential part, and FIG. 3 is a rear view. FIG. 4 is a side view of the weight sorter showing the assembled state of the present invention, FIG.
The figure is a plan view of the same as above. 4 ... Chain conveyor, 5 ... Mounting bar, 6 ... Weighing pan device, 7 ... Hanging metal fittings, 8 ... Legs, 9 ... Engaging portion, 1
1 ... Locking piece, 10 ... Front vertical link, 12 ...
Upper link-shaped arm, 13 ... Lower link-shaped arm, 1
6 ... Rear vertical link, 19 ... Weighing pan, 21 ...
Measuring piece, 24 ... Stopper

Claims (1)

[Scope of utility model registration request] 1. A weighing dish device 6 is mounted on each of a plurality of mounting bars 5 which are mounted at regular intervals between the endless chain conveyors 4, 4 on both sides, and the device is mounted on the lower surface of the mounting bar. An engaging portion 9 is provided on both legs 8 and 8 of the fixed hanging metal fitting 7, and a locking piece 11 is provided on one leg so as to be associated with the front vertical link 10, and a weighing pan 19 is fixed on the upper portion. The rear vertical link 16 provided with a projecting piece 21 that engages with the measurement rail 20 parallel to the one side of the machine body at the lower part and is engaged and disengaged when a predetermined weight corresponds to a predetermined weight, and at a constant vertical interval. The link-shaped arms 12 and 13 facing each other are axially supported by the vertical links 10 and 16 at the front and rear portions,
The tip ends of the upper link-shaped arms 12 and 12 are rotatably connected to the front vertical links 10 and 10 and the legs 8 of the hanging metal fitting through a support shaft 14 to form a roberval mechanism, thereby forming an upper link shape. A weighing dish device in a weight sorter characterized in that a stopper 24 fixed to the front surface of the arm 12 is brought into contact with the front surface of the lower link-shaped arm 13.