JPS6323368Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an article stopping device in which an article such as a box being conveyed by a conveying device is stopped by a stopper projecting upward from the bottom of the conveying device.

Conventionally, in a case packer or the like for packaging bottles, etc., as shown in FIG. A box stopping device is used in which the box 2 is stopped by a stopper 4, and the box 2 is lifted to a predetermined boxing position by a lift 5, and after the bottles are packed, it is lowered and transferred to a roller conveyor. 1.

However, the conveyance speed of the boxes 2 conveyed by the roller conveyor 1 is 50 m to 100 m per minute,
The stopper 4 must rise and fall instantaneously, and there is a limit to its protrusion height.

For this reason, the box 2 may bounce and ride on the stopper 4, and may not be stopped at the normal stopping position.In this state, when the next process, that is, the box 2 is raised by the lift 5, the box 2 will be positioned This caused misalignment and caused problems such as not being able to package the product.

This invention was proposed in view of the above points,
In an article stopping device configured to stop an article conveyed by an article conveying device with a stopper projecting upward from below the conveying device, a proximity switch is fixedly provided in front of the stopper of the conveying device, The stopper is provided with a detection bar that is biased toward the proximity switch by an elastic member at the lower front surface of the stopper and is displaced toward the stopper when the article stops at a predetermined position and comes into contact with the stopper. a detection member that is provided in the direction and is provided integrally with the detection bar outwardly from the width of the article and usually abuts the proximity switch;
The feature is that a detection mechanism is provided which detects whether the article stopping position is normal or abnormal based on the movement of the detection member, and when it is normal, outputs a control signal to the subsequent process. The object is to provide an article stopping device that can detect normality and abnormality and prevent troubles from occurring in subsequent processes.

As described above, the present invention is designed to check whether the article stopped by the stopper is stopped at a predetermined position or not.
Or, whether it is riding on a stopper, etc.
The normality or abnormality of the stop position is detected by the detection mechanism that detects the movement of the detection member provided integrally with the detection bar as described above. In other words, since the detection bar is provided below the front of the stopper and in the width direction of the conveyance device, when the article is in the normal stopping position, the article pushes the detection bar and displaces its position, so that it is integrated with the detection bar. When the provided detection member moves away from the proximity switch, it is detected that the article has stopped at a predetermined position, and a control signal for subsequent processes is issued. On the other hand, if there is an abnormality such as the stopping position of the article running over the stopper, the article does not come into contact with the detection bar, and therefore the detection member provided integrally with the detection bar comes into contact with the proximity switch. Since the control signal remains as it is, no control signal is output to the subsequent process, and the operation of the subsequent process is stopped. Furthermore, since the detection bar is bar-shaped,
When an article bounces and rides on the stopper, there is less chance of it coming into contact with the detection bar, and malfunctions can be avoided accordingly. Therefore, troubles can be prevented from occurring and constant monitoring becomes unnecessary.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 5.

10 and 11 are side frames, and 12 is a roller conveyor that is pivotally supported between the frames 10 and 11, and the speed is increased toward the downstream side, so that a gap is created between the boxes fed to a predetermined position for the stopper to protrude. There is. Reference numeral 13 indicates a box lift located slightly below the conveyance surface of the roller conveyor 12, which can raise and lower the boxes to a predetermined packaging position when the boxes are stopped being fed at a predetermined position. Reference numeral 14 indicates a box lift between the side frames 10 and 11. 15 is an arm rotatably mounted on the shaft 14; 16 is a roller mounted on the arm 15; 17 is a shaft supported on the side frame 11;
Reference numeral 18 denotes a lever fixed to the inner end of the shaft 17, and has a notched groove at its tip that engages with the roller 16. 19 is a lever fixed to the outer end of the shaft 17;
20 is a bracket fixed to the outside of the side frame 11, 21 is a cylinder attached to the bracket 20 via a pin 22, and its piston rod 21a is connected to the lever 19 via a pin 23. 24 is a stopper fixed to the other end of the arm 15; 25 is a detection bar disposed below the front surface of the stopper 24 and in the width direction of the conveying surface of the roller conveyor 12; one end extends close to the side frame 11 and extends upward; The proximal piece 25a is fixed to the upper end thereof. 26 is detection bar 2
The support arm 5 is rotatably attached to a bracket 27 fixed to the stopper 24, is biased by a torsion coil spring 28, and normally hits the positioning piece 29, so that the detection bar 25 is attached to the stopper 24.
It is designed to be located in front of the 30 is a bracket 31 fixed to the side frame 11,
It is a proximity switch installed to face the proximity piece 25a fixed to the detection bar 25, and the detection piece 2
When 5a is released, a control signal to the subsequent process is output. 32 indicates a box.

In the above configuration, when the packed boxes are sent out, the stopper on the entrance side is lowered and the supply of the boxes 32 is started. When the box 32 supplied by the roller conveyor 12 reaches a predetermined position, a charging switch or the like detects this and operates the cylinder 21, the piston rod 21a protrudes, and the lever 19, shaft 17, lever 18, and roller 16 are activated. Then, the arm 15 is rotated to project the stopper 24, detection bar 25, etc. above the roller conveyor 12. In this state, the proximity piece 25a is in a position facing the proximity switch 30, and the box 32 is first opened as shown in FIG. When it hits the detection bar 25, the detection bar 25 is displaced against the biasing force of the spring 28, and then it hits the stopper 24 and is stopped. in this case,
The proximal piece 25a is displaced together with the detection bar 25,
Since the box 32 is moved away from the proximity switch 30, it is detected that the box 32 has been stopped at a predetermined stop position, and the lift 13 is actuated by the signal from the proximity switch 30, and the box 32 is moved to a predetermined packaging position. raise. In addition, if multiple stoppers are installed as shown in Figure 1, the box is stopped by the above-mentioned operation sequentially starting from the downstream stopper, and the box is stopped by the box stop signal from each stopper to the normal position. It suffices to activate the feeder, and when a predetermined number of boxes have passed, the supply of subsequent boxes may be stopped using the stopper on the entrance side. Also, box 3
2 is raised by the lift 13, each stopper 24 is lowered.

On the other hand, as shown in FIG. 5, when the box 32 bounces and rides on the stopper 24, it does not hit the detection bar 25, so the proximity piece 25a
remains close to the proximity switch 30, therefore, a control signal to the subsequent process cannot be obtained, and the lift 13 remains close to the proximity switch 30.
is not activated. In such a case, the box may be operated by a supervisor to the normal stopping position, and if an abnormality occurs, an alarm light or a buzzer may be used to notify the user of the abnormality.

The box is stopped as described above, and if there is an abnormality in the stopping position, no control signal is sent to the subsequent process, which prevents trouble from occurring and requires constant monitoring. It disappears.

Also, when the box is stopped, the box 32 first hits the detection bar 25 and then the stopper 24, and this impact force is applied to the arm 15, roller 16, lever 18, and shaft 1.
7. Since the impact force is transmitted to the cylinder 21 via the lever 19 etc., the impact force on the cylinder 21 can be alleviated, its durability can be improved, and the cylinder 21 can be installed outside the side frame 11. This makes inspection easy.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the conventional one, Fig. 2 is a side view showing an embodiment of the present invention, Fig. 3 is a plan view of Fig. 2, and Figs. 4 and 5 are explanatory diagrams of the operating state. It is. 12: Roller conveyor, 21: Cylinder, 2
4: Stopper, 25: Detection bar, 30: Proximity switch.

Claims (1)

[Scope of utility model registration request] In an article stopping device configured to stop an article conveyed by an article conveying device with a stopper projecting upward from below the conveying device, a proximity switch is fixedly provided in front of the stopper of the conveying device, The stopper is provided with a detection bar that is biased toward the proximity switch by an elastic member at the lower front surface of the stopper and is displaced toward the stopper when the article stops at a predetermined position and comes into contact with the stopper. A detection member is provided in the direction, and is provided integrally with the detection bar outward from the width of the article and normally abuts the proximity switch, and detects whether the article stopping position is normal or abnormal by the movement of the detection member, An article stopping device characterized by being provided with a detection mechanism that issues a control signal to a subsequent process when it is normal.