JPH03284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packaging bag tying device for tying bags filled with packages by closing their openings.

Conventionally, in order to tie the opening of a packaging bag, the opening of the bag filled with packaged items is grasped and transferred to a binding device, and the narrowed opening is always tied in a fixed position by the binding device. It was hot.

Therefore, when filling a bag with a bulky package, even if the package rises up inside the bag, it will always be tied in place, so if a part of the package is caught in the bag opening. There were problems such as the product being tied together and damaging the product value of the packaged product.

The present invention provides a packaging bag tying device that does not have these types of drawbacks found in the prior art. Hereinafter, the present invention will be specifically explained based on an illustrated embodiment.

In the figure, reference numeral 1 denotes an endless chain stretched between chain wheels 2 and 3, and a series of clips 4 are attached to the endless chain 1 for gripping the opening of a bag containing a filling.

Furthermore, conveyor belts 5 and 6 are disposed below, on which bags containing the filling material are placed and transported.
Reference numeral 7 denotes a binding machine disposed below the endless chain 1, and its detailed structure is not directly related to the present invention, so a description thereof will be omitted. The type described in ``Equipment'' can be adopted. The binding machine 7 is arranged such that its vertical position can be freely adjusted. The binding machine 7 narrows the opening of the transferred filling bag,
Bind the opening by wrapping adhesive tape around it.

8 is a support attached to the machine frame;
A pin 9 is pivotally attached to the lower end of the bag, and a bag filling level detection bar 10 is attached to the pin 9. A lever 11 is attached to the pin 9. On the other hand, a lever 12 is pivotally connected to the support 8 by a pin 13, and the lower end of this lever 12 is pivotally connected to the end of the lever 11 described above. Two pulleys 14 and 15 are pivotally attached to the machine frame, and the pulley 1
A wire 16 is stretched between the wires 4 and 15, a weight 17 is attached to one end of the wire, and the other end is attached to the binding machine 7. The weight 17 and the binding machine 7 are
Their weights are almost balanced, and even if a small amount of force is applied to the wire 16, the binding machine 7 can be moved up and down.

In this case, if the binding machine 7 is made slightly heavier than the weight 17, the binding machine 7 will always try to take the downward position.

The upper end of the lever 12 described above is fixed to the wire 16.

In the above-mentioned apparatus, when a bag E containing a packaged item is conveyed on a belt conveyor 5, a series of clips 4 attached to the chain 1 and moving grip the opening of the bag E. Transfer to the left in FIG.

During this time, the upper part of the bag suspended by the clip 4 is pinched from both sides by the bag filling level detection bar 10, so that it is detected that the height of the package placed in the bag E is higher than the lower end of the detection bar 10. The bar 10 is pushed up and changes its slope.

FIG. 3 shows a state in which the filling level detection bar 10 is detecting the height of the package placed in the bag E.

When the detection part 10 is displaced, it rotates the pin 9, so the rotation causes the lever 11 to rotate around the pin 9, and this movement causes the lever 12 to rotate around the pin 13.

When the lever 12 is rotated, the wire 16 is moved to the right, and the binding machine 7 is displaced upward by that amount.

Therefore, when the level of the package reaches a position higher than the predetermined bundling position in the bag E, the bundling machine 7 is pulled up according to the level, so that the package is not caught. There is no situation that would lead to unity.

While the tying machine 7 is carrying out the tying operation, the tying machine 7 is kept in that position resting on the shoulders created by the packages in the packaging bag.

When the binding operation for one bag is completed, the next bag is sent to the position of the detection bar 10.

If the binding machine 7 is made slightly heavier than the weight 17, when the binding operation of the binding machine 7 is completed, the binding machine 7 will descend by its own weight and return to the lower position.

When the next bag to be bound hits the detection bar 10 and its binding position is detected, the binding machine 7 is changed to that position.

Bags E bound by the binding machine 7 are transferred to the belt conveyor 6
is ejected to the left.

In the above embodiment, the movement of the detection bar 10 is transmitted to the binding machine using a lever to move it up and down. However, the movement of the detection bar 10 is not limited to this. It goes without saying that other suitable configurations for raising and lowering may be adopted.

Further, the binding device 7 may be any suitable known device, and the important thing is to arrange it so that it can be moved up and down according to the displacement of the detection bar.

As specifically explained above, the device according to the present invention is pivoted with a downward slope in the transport direction along the transport trajectory of the transport device that grips the opening of a bag containing a packaged item and transports the bag. The present invention has a detection bar whose inclination can be changed depending on the filling level of the conveyed bag, and is configured to change the vertical position of the packaging bag binding machine according to the inclination of the detection bar.
When a bag filled with packages reaches a predetermined bundling height or higher, the bundling machine position is raised according to the level, so the bundling machine does not hold the packages as it did in the past. There will be no situation where they are tied together. Furthermore, the apparatus according to the present invention has an extremely simple structure in which the filling level is detected by a detection bar and the binding machine is moved up and down based on the displacement thereof, so that it can be implemented at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the packaging bag binding device according to the present invention, and FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a perspective view showing the operation of the detection bar. 1...Endless chain, 4...Clip,
7... Binding machine, 10... Detection bar, 11 and 12...
...Lever, 16...Wire, 17...Weight, E...
…bag.

Claims (1)

[Claims] 1. A conveyance device that grips and transfers the upper opening of a packaging bag containing a packaged item, and a bag that is pivoted with a downward slope in the conveyance direction along the conveyance locus of the conveyance device and is transferred by the same conveyance device. a bag filling level detection bar whose inclination can be changed depending on the filling level; a packaging bag binding machine whose vertical position can be freely changed; and a bag filling level detection bar whose inclination can be changed depending on the filling level; A packaging bag binding device characterized by having a binding position adjustment device that changes the position.