JPH0781749A - Package alignment device for packing machine - Google Patents

Abstract

PURPOSE:To correctly align packages by locating the centers of preceding and following ribs on the center line of a package reversing means when a device is stopped, and always placing the rib in contact with the rear end of the package when the device is started. CONSTITUTION:When a device 10 is stopped, a step motor 36 is operated to reset an indexing belt 33 to its original position so that the centers C of preceding and following ribs 34, 34 may be located on the center line 0 of a package reversing rotor 28. When the device 10 is started, the step motor 36 is controlled so that the belt 33 may be correctly displaced to the position where the following rib 34 is put in contact with the read end (a) of a package W to be carried. That is, if the size of the package W is S and the pitch of the rib 34 is P, a motor control means 40 previously controls the positive run of the step motor 36 to move the belt 34 toward by a distance equivalent to (P-S)/2 from the original position in accordance with output pulse from a memory computing means 39. In this way, the package W can be aligned along the rib 34 in its correct direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for aligning packages when the packages are inverted and packed in a box.

[0002]

2. Description of the Related Art A device, which is arranged on the discharge side of a packaging machine typified by a vertical pillow packaging machine and which performs a series of operations from checking the packaging to packing the packaging, uses the packaging discharged from the packaging machine. On the other hand, first, the state of the seal is inspected, and then the package is packed in a box with the printing surface side facing upward.

For this reason, in this type of device, the package discharged from the packaging machine is received with the vertical seal portion facing upward, and the state of the seal is first checked from the upper surface, and then the package is inverted. In addition, the back of the previous package should be kept under the previous package so that part of the device and the package are not caught in the closing stage of the box, and that as many packages as possible can be stored in the box. It is configured so that they are obliquely stacked so as to allow the leading end of the package to enter, and are delivered to the boxing unit.

However, in the case of box packing, it is not enough to simply stack the packages obliquely in this manner, and if one of them is stacked in a different posture from the other, this is not the case. As a result of the above-mentioned package protruding above, there arises a problem that a part of the device is caught at the stage of closing the box or the required number of packages cannot be stored.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to:
It is an object of the present invention to provide a new aligning device capable of correctly aligning packages by simply improving the feeding control of the packages without making a large change in the device.

[0006]

That is, the present invention is provided as a device for aligning packages in a boxing machine for achieving the above-mentioned object, and is provided in a part of a package conveying path and holds the packages by suction. At the package transfer position of the package inverting means for reversing, a conveyor belt having a plurality of ribs standing upright at intervals corresponding to the size of the maximum sized package that can be handled is synchronized with the package inverting means. It is arranged so that it can be driven by acting on the driving means for driving this belt,
When the cartoning machine is stopped, the conveyor belt is returned to its original position so that the centers of the two adjacent ribs are aligned with the centerline of the package reversing rotor. When the cartoning machine is started, the maximum size of the package and the package to be packaged A control means for correcting and moving the conveyor belt by an amount ½ of the size difference is provided.

[0007]

Embodiments Now, the embodiments shown in the drawings will be described. 1 and 2 show an apparatus for arranging packages according to an embodiment of the present invention, and FIG. 3 shows the whole of a boxing machine to which this apparatus is applied.

First, an outline of the boxing machine will be described with reference to FIG. 3. The boxing machine 10 is connected and arranged via a guide plate 2 to the package discharge side of a packaging machine 1 such as a vertical pillow packaging machine. Has been done.

In the boxing device 10, a group of conveyors 11 and 14 for detecting and discharging an abnormal package W is provided below the upper side of the packaging machine 1 with a rotary 28 for reversing the package provided in the middle as a boundary. , 17, 20 are arranged, and on the lower side of the package reversing rotary 28, a group of box conveyors 42, 45, 46 including the index conveyor 30 which is the main part of the present invention is provided. Conveyor 11,
It is arranged at a position one step higher than 14, 17, and 20, and is configured to transfer the package W sent up by the package reversing rotary 28 to the boxing mechanism 50.

Of the above conveyors arranged below the packaging machine 1, three short inspection conveyors 11, 14, 17 driven by induction motors 12, 15, 18 respectively determine the length of the package W. A photoelectric detector 13 for detecting, a suction inspection plate 16 for checking the airtightness of the vertical seal portion,
A scale 19 for detecting weight is provided, and it is configured to detect whether it is an abnormal package according to whether the length, airtightness, and weight deviate from specified values, and
These package transfer conveyors 20 located on the lower side
Is driven by an independent induction motor 21 to deliver the inspected package W to the package reversing rotor 28, while for the abnormal package W, the shutter 2 arranged on the lower side in the transport direction.
2 is configured to be opened and discharged.

On the other hand, the package reversing rotor 28
Is sucked by the suction cup 29 of the package W received from the package transfer conveyor 20 and turned 180 ° while rotating it 90 ° and turned it upside down and turned it sideways to make it the next index conveyor 30. In addition, the index conveyor 30 adjusts the orientation of the package W and transfers it to the next swing conveyor 42.
Furthermore, the swing conveyor 42 cooperates with an auxiliary lever 44 that swings up and down and opens and closes at the terminal end in the transport direction,
The leading end of the carried package W operates so as to sneak into the trailing end of the previous package W placed on the next conveyor 45, and the last conveyor 46 is configured as two left and right conveyors that are inverted downward. In addition, when the number of packages W to be stored in one stage of the box is complete, the packages W are conveyed to directly below the boxing mechanism 50, and the boxing mechanism 50 uses the suction cups 51 to store these packages W.
Is sucked and held, the package W is inverted downward so that the package W can be stored in the packaging box B on the transfer conveyor 52.

In the figure, reference numeral 26 is a step motor 25.
1 shows a package pushing-up member that is driven to push the package W on the package delivery conveyor 20 toward the package reversing rotor 28.

1 and 2 show the mechanism of the index conveyor 30 described above.

The index conveyor 30 sandwiches the suction cup 29 of the package inversion rotor 28,
Two driven pulleys 3 arranged near the rotor 28
1, 31 and two index belts 33, 3 stretched around one drive pulley 32 arranged on the lower side in the transport direction.
3 and is configured to be driven by a step motor 36 via a timing belt 35 that drives the drive pulley 32.

A plurality of ribs 34, ... Are erected on the surfaces of the index belts 33, 33 with a pitch P corresponding to the maximum width of the package W that can be handled by the boxing device 10. The package W sent by the package reversing rotor 28 is received between two adjacent ribs 34, 34, and the rear rib 34 is received.
The rear end edge a of the package W is brought into contact with the surface of the package W, and the package W is transferred while being properly aligned with the transport direction.

On the other hand, reference numeral 37 in the figure denotes a sequence control circuit for controlling the whole of the boxing device 10, and this control circuit 3
In FIG. 7, a storage operation means 39 for receiving and outputting a signal from the keyboard 38 to store and calculate each size of the package W and the maximum package as the number of pulses, and an output pulse from the memory operation means 39. A motor control unit 40 for controlling the step motor 36 in the forward and reverse directions based on the above is provided, and when the apparatus 10 is stopped, the front and rear ribs 34, 3 are provided.
The step motor 36 is operated to return the index belt 33 to the original position so that the center portion C of 4 is located on the center line O of the package inversion rotor 28, and the apparatus 1
When 0 is started, the step motor 36 is controlled so as to correctively displace the belt 33 to the position where the rear rib 34 comes into contact with the rear end edge a of the package W to be conveyed.

That is, assuming that the size of the package W to be conveyed is S, the motor control means 40 has the storage operation means 3
Based on the output pulse from 9, when the device 10 is stopped,
The step motor 26 is reversely rotated in order to return the belt 34 to the original position by an amount equivalent to (P−S) / 2, and when the apparatus 10 is started, the belt 34 is moved from the original position to (P
The step motor 26 is controlled so as to rotate forward in advance so as to move forward by an amount corresponding to −S) / 2.

In the apparatus thus constructed, when the package W to be packaged and boxed is determined, the size data of the package W is input to the storage / calculation means 39 via the keyboard 38.

The package W discharged from the packaging machine 1
When a main switch (not shown) of the boxing device 10 is turned on to pack the boxes, the step motor 36 first starts to rotate by the output signal from the motor control means 40, and the central portions C of the front and rear ribs 34, 34 are packed. The index belt 33, which has been returned to the origin so as to be located on the center line O of the reversing rotor 28, is stored in the storage calculation means 39.
½ of the difference between the maximum package size P and the size S of the package W to be transported, that is, (P-
S) / 2 is advanced to displace the rib 34 located at the position indicated by the chain double-dashed line in the figure to the position indicated by the solid line where the rear edge a of the package W can be pressed.

Therefore, when the apparatus 10 starts to operate in this state, the index belt 33, which has started to move in synchronization with the package inverting rotor 28, changes the printing surface while being laterally changed by the package inverting rotor 28. The package W sent up is taken up between the front and rear ribs 34, 34, and the rear edge a is pushed by the rear rib 34, and the package W is moved along the rib 34. While aligning them, they are aligned in the correct direction and delivered to the next swing conveyor 42.

When the apparatus 10 is stopped at the end after the required boxing work is completed in this way, the step motor 36
In response to the output signal from the motor control means 40, the index belt 33 is retracted by (P−S) / 2 in the opposite manner to the above, and the central portions C of the front and rear ribs 34, 34 are the center lines of the package inversion rotor 28. Return to the origin position that matches O,
This makes it possible to deal with the package W to be processed next.

[0022]

As described above, according to the present invention, a conveyor belt having ribs provided upright is provided at the delivery position of the package inverting means, and the conveyor belt is provided with the ribs of the front and rear when the apparatus is stopped. Since the central portion is located on the center line of the package inverting means, when the apparatus is started, it is displaced from the origin position by 1/2 of the difference between the maximum size package and the size of the package to be packed. During the boxing operation, the rear edge of the package received from the package inverting means is always pressed by the rear rib to align the packages in the correct direction and store them in the packaging box without any trouble. In addition, by returning the belt to the origin when the apparatus is stopped, the position of the belt can be always corrected correctly according to the size of the package to be newly packed in the box.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an apparatus that constitutes an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the same apparatus.

FIG. 3 is an overall configuration diagram showing an example of a box packing device including the same device.

[Explanation of symbols]

 1 Packing Machine 10 Box Packing Device 13, 16, 17 Inspection Conveyor 28 Package Reversing Rotor 33 Index Conveyor 34 Rib 36 Step Motor

Claims (1)

[Claims] 1. A package delivery position of a package reversing means which is provided in a part of a package transport path and which holds and inverts a package according to the size of the maximum package that can be handled. A conveyor belt having a plurality of ribs provided upright at different intervals is arranged so that it can be driven in synchronization with the package reversing means, while the driving means for driving the conveyor belt is actuated to stop the box packing device. Sometimes, the conveyor belt is returned to its original position so that the center portions of the two adjacent ribs coincide with the center line of the package reversing rotor, and when the boxing device is started, the maximum size package and the package to be packaged. An apparatus for arranging packages in a boxing machine, which is provided with a control means for correcting and moving the conveyor belt by an amount ½ of the size difference.