JP2533380Y2 - Work ejection mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a workpiece discharging mechanism used in a combination weighing machine for combining and weighing an object to be weighed in a predetermined amount.

[0002]

2. Description of the Related Art FIG. 6 is a front view showing a combination weighing machine for discharging an object (work) to a predetermined weight by combining a plurality of fine weighings. The combination weighing machine includes a circular feeder 41, a linear feeder 42, an intermediate hopper 43, a weighing hopper 44, a collecting chute 45, and a discharge hopper 46. It is a flat circular configuration.

In this combination weighing machine, first, a work is supplied to a circular feeder 41 via a conveyor or the like and is radially sorted. Then, a predetermined amount of the work is accommodated in each intermediate hopper 43 via each straight feeder 42. Next, each intermediate hopper 43 discharges the predetermined amount of the work to the weighing hopper 44 immediately below and supplies the work to the weighing hopper 44. Then, the target weights are combined by combining the workpieces accommodated in the respective weighing hoppers 44. Further, each weighing hopper 44 selected corresponding to the target weight is
Discharges the work to the collecting chute 45. The collecting chute 45 collectively collects the workpieces having the target weights in the discharge hopper 46. Discharge hopper 46
Opens the discharge door at a predetermined timing and discharges the workpiece having the target weight to the lower portion. The discharged work is conveyed to the next step by a conveying means such as a conveyor, and is subjected to processing such as bag filling.

FIG. 7 shows a side view of the discharge hopper 46. As shown in FIG. The discharge hopper 46 supported by the support portion 47 with respect to the apparatus main body has a discharge door 48 at a lower portion. Discharge door 48
Is opened and closed by an opening and closing mechanism 49 as shown by a chain line in the figure. The opening / closing mechanism 49 includes link arms 50a, 50b, and 50c connected to each other.
The pressing member 52 of the driving device can freely contact a. Further, the link arm 50c is connected to the discharge door 48, so that when the pressing member 52 advances, the link arm 50a,
50b and 50c rotate to open the discharge door 48 as shown by the chain line in the figure, and discharge the work.

[0005]

However, the conventional combination weighing machine has the following inconvenience in the discharge hopper 46. First, even when the target weigh does not reach even when the plurality of weighing hoppers 44 are selected, even when the discharge hopper 46 accommodates a defective (NG) work, the discharge hopper 46 may perform a pass / fail determination. Therefore, the work can always be discharged only to the lower portion of the discharge hopper 46 at the same location. For this reason, in order to select good or bad work, the work must be selected outside of the combination weighing machine, which is troublesome.

Next, since the discharge hopper 46 is configured to discharge the work by opening and closing the discharge door 48, a contact sound is generated at a contact portion between the discharge door 48 and the discharge hopper 46 every time the discharge hopper 46 is opened and closed. And noise.

Further, the discharge hopper 46 itself has a quadrangular shape in plan view and a substantially trapezoidal side cross section, so that the structure is complicated and cleaning of the discharge hopper 46 is difficult. In addition, the structure of the opening / closing mechanism 49 for opening and closing the discharge door 48 of the discharge hopper 46 is complicated, the number of components is large, the weight cannot be reduced, the cleaning operation is difficult, and the cost increases.

The present invention has been made in view of the above-mentioned problems, and when a work after combined weighing becomes NG, the work can be selectively discharged and the discharge hopper can be cleaned. It is an object of the present invention to provide a work discharge mechanism which is easy and can discharge the work by a simple mechanism, which can reduce the cost and does not generate noise.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a work discharging mechanism provided in a combination weighing machine for combining and discharging a work to a predetermined weight. A cylindrical cylindrical container 4 provided at a location where the upper end 4a and the lower end 4b are opened, and a plate member 8 provided on the lower end 4b of the cylindrical container 4; By moving the cylindrical container 4 or the plate member 8, the cylindrical container 4 is moved.
Actuator 6, which discharges the work inside each to different places,
10 is provided.

[0010]

According to the above construction, the operation of the actuators 6, 10 causes the cylindrical container 4 on the plate member 8 or the plate member 8 to move, and the work accommodated in the cylindrical container 4 is moved. It can be discharged to another location, and can be applied to sorting of good and bad workpieces. In addition, since the cylindrical container 4 has a cylindrical shape, it is easy to clean, and the operation sound when moving between the cylindrical member 4 and the plate member 8 can be reduced.

[0011]

FIG. 1 is a front sectional view showing an embodiment of a work discharging mechanism according to the present invention. In the figure, the same components as those of the combination weighing machine arranged in a plane circular shape described in the section of the related art are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, a description will be given of a combination weighing machine 1 having a configuration in which the intermediate hoppers 43 and the weighing hoppers 44 are arranged in a substantially circular shape in a plane. A collecting chute 45 is provided immediately below each of the weighing hoppers 44, and the collecting chute 45 collectively collects a predetermined amount of workpieces discharged from the selected weighing hoppers 44 and discharges them from the discharge port 45a through the discharge mechanism 2a. To be supplied.

The discharge mechanism 2 includes a cylindrical cylindrical container 4 having an upper end 4a and a lower end 4b having a diameter approximately equal to the diameter of the discharge portion 45b at the lower end of the collecting chute 45 and having an opening. It is constituted by an actuator 6 to be moved, a moving plate 8 as a plate member provided immediately below the lower end 4 b of the cylindrical container 4, and an actuator 10 to move the moving plate 8.

FIGS. 2A and 2B are plan views showing a method of fixing the cylindrical container 4. FIG. As shown in FIG. 1A, the cylindrical container 4 is freely attachable to a locking member 12a formed of a leaf spring whose outer periphery is open at one end. This locking member 12
a is fixed to the rod 6 a of the actuator 6.
As another example, as shown in FIG. 2B, a semicircular fixing member 13 is provided on the rod 6a of the actuator 6, and locking members 13a are provided on both ends of the fixing member 13. Then, the outer circumference of the cylindrical container 4 is circulated around the band 14 and the locking members 14a at both ends of the band 14 are locked to the locking members 13a, thereby fixing the cylindrical container 4 to the rod 6a. As described above, since the cylindrical container 4 is easily detachable from the apparatus main body and is formed in a cylindrical shape, it can be easily cleaned.

Next, the operation of the discharging mechanism 2 having the above structure will be described. When a work having a predetermined normal weight is supplied to the cylindrical container 4, the moving plate 8 is moved by the operation of the actuator 10. The workpiece in the cylindrical container 4 is retracted to a position shown by a chain line in FIG. On the other hand, when the work is to be removed from the production line, for example, when the work less than the predetermined normal weight is supplied to the cylindrical container 4,
The operation of the actuator 6 causes the cylindrical container 4 to advance to the position shown by the dashed line, and discharges the work in the cylindrical container 4 as a defective product to a side position different from a non-defective product. In this manner, the discharge position of the work can be changed according to the state of the work (for example, good or defective).

When the work is discharged, if the work is non-defective, the moving direction of the moving plate 8 is
Only slides the lower end portion 4b in the horizontal direction. On the other hand, when the workpiece is defective, the cylindrical container 4 merely slides in the horizontal direction on the moving plate 8, and thus the operation noise at this time can be extremely low.

FIG. 3 is a side view showing another embodiment of the work discharging mechanism according to the present invention. As shown in FIG. 3, the cylindrical container 4 is supported by two upper and lower actuators 15 and 16, respectively. Is also good. The actuator 15 supports and fixes the cylindrical container 4 at a rod 15 a portion, and the rod 16 a of the actuator 16 supports the actuator 15. Thereby, the cylindrical container 4 moves on the fixed plate 17 as a plate member in the direction a by the operation of the actuator 15 and discharges the work, and the cylindrical container 4 moves on the moving plate 17 in the direction b by the operation of the actuator 16. To discharge the work to another position.

FIG. 4 is a partial plan view showing still another embodiment of the work discharge mechanism of the present invention. The cylindrical container 4 is located immediately below the outlet 45a of the collecting chute 45. The cylindrical container 4 is fixed to one end of the swing arm 20, and the plate is moved by the swing of the swing arm 20. It selectively moves horizontally on the fixed plate 21 as a member in the left-right direction. On the left and right sides of the fixed plate 21, discharge ports 21a, 21
b is provided, and the discharge port 21a is a discharge position of a non-defective work,
The discharge port 21b is a discharge position of the defective work. The swing arm 20 moves in the direction of one of the discharge ports 21a and 21b depending on the state of the work, and discharges the work to another position. As described above, even when the work discharge mechanism is deformed, the same operation and effect as those in the above embodiment can be obtained by using the cylindrical cylindrical container and providing a plurality of discharge positions by sliding the cylindrical container. Can be done.

Further, in the above-described embodiment, the application of the work discharging mechanism to the combination weighing machine arranged in a plane circular shape has been described, but the present invention is also applicable to the combination weighing machine 30 shown in FIG. good. In the combination weighing machine 30, a plurality of cylindrical pool hoppers 33 are linearly arranged below a loading section 32 into which a work is to be charged, and weighing hoppers 34 are linearly arranged at lower positions of the pool hoppers 33 respectively. Are located. These pool hopper 33 and weighing hopper 3
Each of the members 4 is formed in a cylindrical shape and moves on a plate and is discharged to a lower portion. A collecting plate 35 and collecting arms 36a and 36b are provided below the weighing hopper 37.
The work is collected at the center by the operation of 6b. A discharge port 35a is opened at the center, and the work discharge mechanism 2 is provided immediately below the discharge port 35a. In the combination weighing machine arranged in a straight line, the same operation and effect as in the above embodiment can be obtained.

[0019]

According to the present invention, the work accommodated in the cylindrical container can be discharged to different places by moving the cylindrical container or moving the plate member. The present invention can be applied to a sorting operation for discharging from different places. In addition, since the cylindrical container has a cylindrical shape, cleaning can be easily performed, and operation noise generated between the cylindrical container and the plate member during movement can be reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an embodiment of a work discharge mechanism of the present invention.

FIGS. 2A and 2B are plan views each showing a method of fixing a cylindrical container.

FIG. 3 is a side view showing another embodiment of the work discharge mechanism of the present invention.

FIG. 4 is a partial plan view showing still another embodiment of the work discharge mechanism of the present invention.

FIG. 5 is a perspective view showing another example of the combination weighing machine to which the work discharge mechanism of the present invention is applied.

FIG. 6 is a front view showing the combination weighing machine.

FIG. 7 is a side view showing a discharge hopper.

[Explanation of symbols]

2 ... discharge mechanism, 4 ... cylindrical container, 4a ... upper end, 4b ... lower end, 6, 10, 15, 16 ... actuator, 12a ...
Locking member, 13: fixing member, 13a, 14a: locking tool,
14 band, 17, 21 fixed plate, 20 swing arm, 21a, 21b outlet.

Claims (1)

(57) [Scope of request for utility model registration] 1. A work discharging mechanism provided in a combination weighing machine for combining and discharging a work to a predetermined weight, wherein the upper end is provided at a portion where the works are combined and weighed and then assembled and discharged to the outside. (4a) and a cylindrical container (4) having a lower end (4b) opened, and a plate member (8) provided on the lower end (4b) of the cylindrical container.
And an actuator (6, 10) for moving the cylindrical container or the plate member to discharge the work in the cylindrical container to different places, respectively.