JPH0127062Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a combination weighing machine.

FIG. 1 is a drawing showing a conventional combination weighing machine, in which a large number of troughs 2 are arranged radially around the outer periphery of a dispersion table 1 having a conical shape as the main body of the weighing machine, and a pool hopper 3 is installed at the bottom of the tip of the trough 2. and a weighing hopper 4 are respectively arranged. However, in the above-mentioned conventional combination weighing machine, the hopper drive unit 5, which opens and closes the opening/closing lids 3a, 4a of the pool hopper 3 and the weighing hopper 4 using a lever mechanism (not shown), is located outside of both the hoppers 3, 4. In addition, since it is installed on the upper surface of the outer periphery of the frame 6 of the weighing machine main body, it protrudes outward by the installation space, resulting in a disadvantage that the installation size of the weighing machine main body becomes excessive. Furthermore, it is necessary to clean the pool hopper 3 and weighing hopper 4 due to adhesion of objects to be weighed, etc., but since the drive unit 5 is located on the outside, the drive unit 5 must be removed each time cleaning is performed. This was undesirable as it added time and effort.

The present invention is an improvement on the above-mentioned conventional drawbacks, and aims to make the installation space of the weighing machine body more compact and to improve maintainability.

In the present invention, a drive section for opening and closing the hoppers is installed in a space surrounded by a plurality of hoppers in the weighing machine body by an appropriate means.

This invention will be described below with reference to embodiments shown in the drawings.

In FIG. 2, reference numeral 10 denotes a dispersion table of the weighing machine main body formed into a conical shape, which is mounted and supported on an electromagnetic vibration device (not shown) to cause helical reciprocating vibration. Reference numeral 11 denotes a large number of radial troughs arranged radially around the outer circumference of the dispersion table 10, each of which has its rear end under the dispersion table 10.
It is positioned so that it does not touch 0. 12 is a pool hopper located at the bottom of the tip of the radial trough 11, and 13 is a weighing hopper located at the bottom of the pool hopper 12. A large number of hoppers are placed at predetermined intervals on the upper surface of the outer periphery of the frame 14 in front of the weighing machine. It is installed inside the installed measuring mechanism section 15. 16
is a collective chute supported inside the center of the frame 14, with its upper end opening slightly protruding from the upper surface of the frame 14. Reference numeral 17 denotes an electromagnetic vibration device for vibrating the radiation trough 11, on which the radiation trough 11 is placed radially around the distribution table 10. Usually, in a combination weighing machine, the center of the dispersion table, that is, the area below the electromagnetic vibration device that imparts vibration to the radiation trough, is an empty space due to its structure. This invention makes effective use of the above-mentioned space, and the above-mentioned pool hopper 1
A drive unit 18 is located within the space a inside the hoppers 12 and 13 and on the upper surface of the frame 14, and opens and closes the lids 12a and 13a of the hoppers 12 and 13 using a lever mechanism (not shown).
is mounted via support legs 19, support stand 20, etc. The electromagnetic vibration device 17 is placed on the upper surface of the drive section 18, and the pool hoppers 12 are arranged at fixed positions on the outer peripheral surface thereof. At this time, the electromagnetic vibration device 17 has its feeder base 21 formed into a single disk shape, for example, and the radiation trough 11
is mounted via an electromagnetic feeder, a plate spring, etc., and the electromagnetic vibration device 17 is formed into a thin shape. As a result, the space a can be utilized more widely, and the installation of the drive section 18 becomes extremely easy. When an object to be weighed is placed on the dispersion table 10 of the combination weighing machine having the above-mentioned configuration, the object to be weighed is dispersed in a spirally reciprocating manner due to the centrifugal force caused by the torsional reciprocating vibration of an electromagnetic vibration device (not shown). Appropriate amounts are radially protruded from the conical surface of the table 10 toward the outer circumference and supplied to the radial trough 11. The object to be weighed supplied into the radiation trough 11 is conveyed in the direction of the arrow in FIG. It is thrown into the pool hopper 12. Furthermore, the object to be weighed that has been put into the pool hopper 12 is placed in the weighing hopper 13.
It is weighed by the weighing mechanism section 15 inserted into the machine. Then, an electronic circuit calculates a combination of the weight values of the objects to be weighed for each weighing mechanism section 15, and a combination of weights equal to or closest to a predetermined weight is selected, and the weighing hopper 13 corresponding to the combination is opened/closed. The lid 13a is opened and closed by the lever mechanism of the drive unit 18, and the objects to be weighed are discharged into the collecting chute 16 below, and further collected on a bucket conveyor (not shown) or sent to a packaging machine via a timing hopper. Injected.

As explained above, this invention uses an appropriate means to install the drive unit that opens and closes the hoppers in the space surrounded by multiple hoppers, so it only takes up the space that was previously occupied by the drive unit. Since the main body of the machine can be made compact, the manufacturing cost is low and it is economical. Further, by installing the driving section inside the pool hopper and the weighing hopper, the installation position of each of the hoppers is at the outermost periphery of the weighing machine main body, so that the operability thereof is improved. Therefore, cleaning of both hoppers due to adhesion of objects to be weighed, etc. can be easily performed, which is very convenient.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of the main parts of a conventional combination weighing machine. FIG. 2 is a front sectional view of the main parts of the combination weighing machine according to the present invention. 12... Pool hopper, 13... Measuring hopper, 12a, 13a... Opening/closing lid, 18... Drive unit, a... Space portion.

Claims (1)

[Scope of utility model registration request] The distribution table includes a plurality of radiation troughs arranged to receive objects to be weighed from the distribution table, pool hoppers placed corresponding to each of the radiation troughs, and weighing hoppers placed corresponding to each of the pool hoppers. are arranged radially around the center to form a space inside, and each of the pool hopper and weighing hopper is provided with an opening/closing lid that opens and closes in the direction of the internal space, and participates in the combination calculation and compares with the set value of the object to be weighed. a drive unit that opens and closes the opening/closing lid of the weighing hopper selected in the process in the direction of the internal space, and further opens/closing the opening/closing lid of the pool hopper in the direction of the internal space in order to supply the object to be weighed to the empty weighing hopper; is installed in the internal space, and a collection chute is installed below the weighing hopper to collect objects to be weighed discharged from the weighing hopper.