JPS5913908B2 - Sorting mechanism in sorting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an apparatus that measures objects to be sorted, such as fruits, while transporting them while being housed in packets, and sorts the objects based on the measurement results. The present invention relates to a sorting mechanism that introduces materials from a transport conveyor to another branch conveyor for each sorting stage.

Conventionally, in the above device, when a packet to which a sorting command has been given is to be branched to another conveyance path, one side of the parallelogram link is pushed into the conveyor that conveys the packet, thereby pressing one side of the packet. A conceivable method is to introduce the packets from the transport conveyor to the branch conveyor.

However, when packets are continuously sent on a conveyor, the timing of activation of the above-described suppression method must be strictly defined.

Furthermore, as a result of the pressure applied to the packet from the lateral direction, it may not be possible to change the direction smoothly in relation to the transport direction.

In view of this, the present invention provides a sorting mechanism in which a switching lever is rotatably provided on one side of a conveyor, and the direction of packets is smoothly changed by switching the switching lever. The purpose is to

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

1 to 4 show a packet 1 containing objects to be sorted.

The packet 1 is composed of a box-shaped packet frame 2 made of relatively hard synthetic resin, and a packet container 3 made of soft synthetic rubber fitted onto the upper surface of the packet frame 2.

The packet frame 2 has guide walls 4 projecting downward on both outer sides in the conveying direction, and a lattice-shaped guide wall 4 is formed in a cavity 5 on the upper surface and slopes upward from the center toward the inner circumferential wall of the cavity 5. The lip 6 and the plurality of protrusions 7 form the cavity 5.
Front and rear projecting edges 9 having partition walls 8 at regular intervals in the width direction are formed on the front and rear edges of the hollow portion 50, and a plurality of protrusions 10 are integrally formed on both side edges of the cavity 50.

The packet container 3 also has an inverted truncated conical recess 11 on the upper surface, a protrusion 12 with a hole on the lower surface that fits with the protrusion 7 of the packet frame 2, and a removable protrusion 12 that fits between the partition walls 8. A plurality of projecting pieces 13 and both side projecting edges 14 that engage between the outside of the projection 10 and the inner edges on both sides of the cavity 5 are each integrally formed.

FIG. 5 is a plan view of a sorting device for sorting the weight of objects to be sorted using the packet 1 described above.

In the figure, reference numeral 21 denotes a machine frame, and a chain-driven transport conveyor 22 is provided along the longitudinal direction of the machine frame 21, and a plurality of conveyors (only one is shown in the drawing, and the others are shown at regular intervals along the way) are provided. A gravimetric measuring device 23 (omitted) is provided.

The measuring device 23 is a donkey pal type device shown in FIGS. 6 and 7, and has a swinging frame 25. is pivotally supported by a shaft 27.28 so as to be freely swingable in the vertical direction, and an elevating frame 29 is pivotally supported by a shaft 30.31 between the front end portions of the upper and lower swinging frames 25, 260 so as to be freely movable up and down.
A parallelogram link 32 is formed with the supporting frame 24 as a fixed side.

A top plate portion 33 is configured between the upward protruding portions of the elevating frame 29 in the parallelogram link 32, and a weighing detection portion 34 is configured between the rear protruding portions of the swinging frame 26 in the parallelogram link 32. has been done.

In the top plate part 33, a motor 36 is supported in the center between the side frame plates 35 in an inverted triangular shape attached to the upper part of the vertical movement frames 29 on both sides, and the power from the motor 36 is transmitted to the upper part by a pulley 37 and A drive roller 39 and a support roller 40, which are transmitted via a belt 38, are arranged in parallel with each other and on the same plane as the conveyance surface of the conveyor 22.

The measurement detection section 34 has an operation detector 41 facing the upper surface side of the rear protrusion of the swing frame 26,
When the weight of the part to be sorted exceeds the set weight, the lifting frame 2
9 is lowered, it is detected that the rear end of the swing frame 26 rises.

The set weight can be determined by rotating the screw 42 provided along the longitudinal direction of the swinging frame 26, that is, by rotating the screw 42 provided along the longitudinal direction of the swinging frame 26.
When rotated by operating the knob 45 of 4, the screw pestle 4
The adjustment weight 46 screwed into the adjustment weight 2 can be changed by moving in the longitudinal direction thereof.

Further, 47 is a zero adjustment weight of the measuring device 23, and 48.49 is a stopper that regulates the amount of displacement of the swing frame 25 and the elevating frame 29.

Reference numeral 50 denotes a packet position detector in which a photoelectric switch or the like is installed corresponding to the guide wall 4 for the packet 10 passing through the top pan 33 of the measuring device 23, and the packet signal detected by this packet position detector 50 is The signal is sent to the control device 51 together with the signal from the operation detector 41 of the measuring device 23 .

The control device 51 is. Only when these two signals are received, the sorting mechanism 52 is temporally controlled and operated.

As shown in FIGS. 8 to 10, in the sorting mechanism 52, a support shaft 53 is rotatably supported at a position on the front side of the measuring device 23 via a support base 54, and the support shaft 53 protrudes upward. A switching lever 550 has a proximal end whose tip enters into the transport path of the transport conveyor 22, and a biasing lever 56 is fixed to its downwardly protruding end.

The biasing lever 56 has a pair of strong and weak springs 57 and 58.
The inner ends of the springs 58 are connected to each other, and the outer end of one of the springs 58, which has a weak tensile force, is tensioned and locked in a direction that urges the support shaft 53 to rotate counterclockwise in FIG. On the other hand, the outer end of the other spring 57 is tensioned in a direction that urges the support shaft 53 to rotate clockwise, and a plunger 60 of the solenoid 59 operates in response to a signal from the control device 51.
is connected to.

Then, due to the operation of this solenoid 59, the switching lever 5
5 enters the conveyance path of the conveyor 22, the direction of the packet 1 that has passed through the measuring device 23 is changed by the angle of the switching lever 55, and the packet 1 is introduced into the branch conveyor 61.

The branch conveyor 61 is provided with a guide rail 62 curved outward from the base end of the switching lever 550 on one side of the transfer conveyor 22, and the guide wall 4 of the packet 1 can be held on the outside of the guide rail 62. A plurality of guide rollers 63 having upper and lower grooves spaced apart from each other are arranged facing each other, and a roller conveyor 64 is arranged inside.

Belts 66 and 67 rotated by a motor 65 are wound around the upper and lower grooves of these guide rollers 63 by a tension pulley 68 and an urging pulley 69, respectively.

Next, the operation of the above embodiment will be explained.

First, the packet 1 supplied onto the conveyor 22 is
During the conveyance, objects to be sorted, such as apples, fall into the recess 11.
Pear, cabbage, etc. are thrown in and conveyed to the measuring device 23.

When packet 1 reaches this measuring device 230, the rotational speed of several rollers in front of it is higher than the others, so the speed is increased as it passes, and the consecutively connected packets 1 are spaced apart from each other. state, and is sent onto the large plate portion 33 of the measuring device 23 with some spacing between them.

At this time, if the weight is heavier than the set weight of the measuring device 23, the lifting frame 29 is lowered using the shafts 27 and 28 as fulcrums.

Then, since the rear end of the swing frame 26 rises, the operation detector 41 is set, and a sorting command signal is sent from there to the control device 51.

Note that the set weight is set by each measuring device to a value that decreases toward the front in the conveyor direction, so the objects to be sorted are sorted in order of weight from the front of the conveyor 22.

At the same time, at this point, the position of the packet 1 on the measuring device 23 is detected by the position detector 50, and the packet signal is sent to the control device 51.

The control device 51 receives both the signal from the position detector 50 and the signal from the operation detector 41, and temporally controls and operates the solenoid 59 of the sorting mechanism 52.

In this case, when the packet signal is output from the position detector 50, as shown in FIG. be.

Therefore, the solenoid 59 should be operated within the time from when the packet signal is issued until the front end of the packet 1 reaches the tip of the switching lever 55, that is, within the time t shown in FIG. 11. That's good.

In this embodiment, for the sake of reliability, the switching lever 5 is located approximately at the center of the guide wall 4 of the previous packet 10, such as the 11th [Zc].
The control device 51 causes a delay so that the near L//id 59 is activated when the tip of the L//id 5 is reached.

Now, when the solenoid 59 is actuated, the tension force of the spring 57 causes the support shaft 53 to rotate clockwise in FIG.
However, since the previous packet 1 is only urged in the lateral force direction by the difference between the tensions of the springs 57 and 58, it is transported forward by the transport conveyor 22.

When the rear end of the guide wall 4 of the previous packet 10 passes through the switching lever 55, the switching lever 55 rotates further and its tip enters the transport path of the transport conveyor 22, resulting in the state shown in FIG. 11d. .

Then, when the packet 1 is further sent by the conveyor 22, the draft of the packet 1 □
When the switching lever 55 enters inside the inner wall 4, the direction of the packet 1 is changed.

At this time, the solenoid 59 is de-energized.

When the packet 1 completely passes through the switching lever 55 while being changed in direction, the switching lever 55 is rotated counterclockwise in FIG. returns to a parallel state.

The packet 1 whose direction has been changed in this manner is gradually branched outward with the guide wall 4 on one side being held between the guide rail 62 and the guide roller 63, and is transported to the boxing position.

Note that items that are lighter than the set weight of the measuring device 23 pass through the sorting mechanism 52 as they are, advance on the transport conveyor 22, and are classified into a conveyor at a predetermined sorting stage.

According to the present invention, when a sorting command is given by the measuring device, the solenoid is activated, and the switching lever is rotated by the tensile force of the spring, so that the tip thereof is positioned inside the guide wall for the packets being sent by the conveyor. For example, even if packets are consecutively connected, the guide wall of the specified packet will be changed from the point when the front end of the guide wall of the packet immediately before the commanded packet passes the tip of the switching lever. The solenoid only needs to be activated within the time it takes for the front end to reach the tip of the switching lever, so even if the switching lever rotates while the previous packet has passed the switching lever position, the switching will not be possible. The tip of the lever is in sliding contact with the outside of the guide wall, allowing the previous packet to pass through the switching lever position, making it possible to widen the permissible timing for activating the solenoid. Since the direction is changed while being guided according to the angle, sorting can be performed extremely smoothly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a perspective view showing the external appearance of a packet, Fig. 2 is an exploded perspective view thereof, and Figs. 3 and 4 are line ■-■ in Fig. 1. Cross section and IV-I
V-line sectional view, Figure 5 is a plan view of the sorting device, Figure 6 is a sectional view of the measuring device, Figure 7 is its side view, Figure 8 is a front view of the sorting mechanism, and Figure 9 is the seventh plane. 10 are side views thereof, and FIG. 11 is an explanatory diagram illustrating the operation of the sorting mechanism. 1...Packet, 4...Guidance wall, 22
...Transportation conveyor, 23 ...Measuring device, 52 ... Sorting mechanism, 53 ... Support shaft,
55...Switching lever, 58...First spring, 57...Second spring, 59
······solenoid.

Claims (1)

[Claims] 1. A conveyor for transporting packets containing objects to be sorted and having a guide wall on at least one side in the direction of travel;
A measuring device provided in the middle of the conveyor, a branch conveyor disposed in a direction different from the conveying direction of the conveyor from a position in front of the measuring device, and a measuring device provided in the middle of the conveyor. A sorting device comprising a sorting mechanism for introducing packets containing sorted items from the transport conveyor to a branching conveyor, wherein the sorting mechanism is provided with a spindle rotatably provided on the front side of the measuring device; A switching lever is fixed to the support shaft, and the tip of the switching lever enters into the guide wall of the packet sent by the transport conveyor as the support shaft rotates, and the switching lever moves in the direction in which the tip of the switching lever retreats from inside the transport conveyor. a first spring that applies rotational force to the support shaft; and a tension of the switching lever that is tensioned in a direction that applies rotational force to the support shaft in the direction in which the tip of the switching lever enters the conveyor, and that the tension of the first spring is greater than the tension of the first spring. a second spring with a large tension;
and a solenoid connected to the second spring and applying tension to the second spring in response to a command from the measuring device.