JPH0525740B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention (Industrial Field of Application) The present invention provides a packaging machine equipped with a heater on a package delivery stand that heats and brings the folded portion of the film formed on the bottom surface of the package into close contact with the folded portion of the package. When attaching a label printed with the weight of the item based on the measured weight of the item to the packaged item using a label printing applicator,
This invention relates to a device for positioning a packaged product with respect to the label printing/applying device.

(Prior Art) Conventionally, in this type of packaging machine, as shown in Japanese Patent Application No. 58-41304, for example, the label printing and pasting device is attached to the package delivery stand, and the film is attached to the folded portion of the package. It is now possible to synchronize and attach labels in a short time.

(Problem to be solved by the invention) However, since labels are usually affixed to the corners of items (items stored in trays), when the size of the item changes, the label cannot be affixed to the center of conveyance. The positional distance also changed, and the mounting position of the label printing and pasting device had to be changed each time. However, changing the mounting position and adjusting the position relative to the article is very troublesome.

Structure of the Invention (Means for Solving the Problems) The present invention has been made in view of this problem, and as shown in the drawings of the embodiments to be described later, a packaged product unloading table 1 on which a packaged product W is placed is provided. The conveyor 6 is capable of reciprocating in the left and right directions that are substantially orthogonal to the carrying-out direction of the packaged goods W, that is, the front-back direction, and the packaged goods carrying-out table 1 has a front-back direction position of the packaged goods W being conveyed on the conveyor 6. A phototube switch 29 controls the forward and backward drive of the conveyor 6 by detecting the position of the packaged product W so as to determine the position of the packaged product W, and a phototube switch 29 controls the horizontal drive of the conveyor 6 by detecting the position of the packaged product W so as to determine the leftward and rightward position of the packaged product W. It is characterized in that it is provided with a phototube switch 30 for controlling.

(Function) When the packaged product positioning device according to the present invention is used for labeling, for example, when the packaged product W conveyed onto the conveyor 6 activates the phototube switch 29, the phototube switch 29 is activated. The front-back drive is stopped and the front-back position of the packaged product W is determined, and the conveyor 6 moves to the label printing and pasting device 2.
approach. Next, when the package W activates the phototube switch 30, the conveyor 6 stops driving in the lateral direction, the lateral position of the package W is determined, and the label L is affixed to the package W. Thereafter, the conveyor 6 is separated from the label printing/applying device 2, and the horizontal drive of the conveyor 6 is stopped, and the conveyor 6 is again driven in the front and back direction, and the packaged product W is carried out.

(Example) Hereinafter, an example in which the present invention is applied to label pasting will be described with reference to the drawings.

This example is based on a patent application already filed by the applicant.
This packaging machine is an improved version of the packaging machine described in No. 58-41304, and is equipped with a heater that heats the folded part of the film formed on the bottom surface of the package to bring it into close contact, as shown in Figures 1 and 2. A stand 1 is provided on the rear side of the machine frame 3, and a label printing/applying device 2 that affixes a label on which the weight of the item is printed based on the measured value of the weight of the item to the packaged item on the carrying out stand 1. is attached above this carrying out table 1.

First, the packaged goods unloading table 1 will be described in detail with reference to FIGS. 4 and 5. A pair of support plates 4 are provided on both left and right sides of the rear surface of the machine frame 3 to protrude rearward (downward in FIG. 4, left in FIG. 5), and rails 5 are provided on both the front and rear sides between the support plates 4 It is constructed so as to extend in the direction. A conveyor 6 is supported on both rails 5 via wheels 7, and is capable of reciprocating in the left-right direction along the rails 5. In this conveyor 6, side frames 9 are fixed to both left and right sides of a base plate 8 to which the wheels 7 are attached, and rollers 10 are arranged between rods 9a fixed to the rear end sides of the both side frames 9.
is supported via a tension spring 11, and a roller 12 is also installed between the front ends of both side frames 9. A flat belt 13 is wound between the rollers 10 and 12, and a heater 14 is placed between the frames 9 on both sides inside the flat belt 13.
is installed. An electric motor 15 for carrying out is attached to the lower side of the base plate 8, and its output pulley 1
5a is connected to the roller 12 via a round belt 16, an intermediate pulley 17, and a round belt 18. The flat belt 13 is connected to this electric motor 15.
The rollers 12 and 10 are driven to rotate in the direction of arrow F between the rollers 12 and 10.

Further, a reciprocating electric motor 19 is attached to the lower side of the one support plate 4, and a reciprocating electric motor 19 is installed between its output sprocket 19a and conduction sprockets 20 and 21 attached to both left and right sides of the rear rail 5. A chain 22 is strung across. This chain 22 is connected to the lower side of the base plate 8 of the conveyor 6 via a connecting portion 23. The conveyor 6 is driven by the electric motor 19 to reciprocate in the left-right direction along the rail 5.

An auxiliary roller 24 and an auxiliary roller 25 are installed between the rear ends and front ends of both support plates 4, respectively, so as to sandwich the conveyor 6, and below the other support plate 4, the intermediate pulley 17
A round belt 28 is connected between the auxiliary rollers 24 and 25 via a conduction pulley 26 connected coaxially with the support plate 4 and a conduction pulley 27 attached to the support plate 4.
is being passed on. The round belt 28 is driven by the unloading electric motor 15 to rotate in the direction of arrow F in the same way as the flat belt 13, and both auxiliary rollers 24 and 25 rotate in the same direction as the flat belt 13. There is.

A phototube switch 29 for controlling the position in the longitudinal direction, which is composed of a light emitting tube 29a and a light receiving tube 29b, is disposed on the rear end side of both the support plates 4.
The light emitting tube 30a and the light receiving tube 30 are also located at approximately the middle position between the two.
A phototube switch 30 for controlling the horizontal position is provided. Then, as shown in FIG. 6, when the package W is placed on the flat belt 13 of the conveyor 6 at the package carry-out position P and is carried out,
When this package W turns off the phototube switch 29, the electric motor 15 for carrying out stops, the flat belt 13 and both auxiliary rollers 24, 25 stop rotating, and the position of the package W in the front and back direction is determined. The reciprocating electric motor 19 is driven to move the conveyor 6 on the rail 5 to one side. next,
As shown in FIG. 7, when the package W turns off the phototube switch 30, the reciprocating electric motor 19 also stops, the conveyor 6 stops at the labeling position R, and the horizontal position of the package W is also determined. .

On the other hand, the label printing and pasting device 2 is a conventionally known device, and normally, as shown in FIG. , is disposed above one side of the packaged goods unloading table 1, and its position can be adjusted arbitrarily.
The conveyor 6 moves back and forth between the package delivery position P and the label pasting position R, approaching and separating from the label printing and pasting device 2. When the conveyor 6 is in the label pasting position R, the label feeding opening 2a of the label printing and pasting device 2 and the packaged product W are connected to each other.
The A position at one corner of the A position corresponds to the A position of one corner of the A position.

In addition, in the packaging machine shown in FIGS. 1 to 3, the machine frame 3 is
The weight of the article is measured by a weighing device 52 in an article supplying device 51 provided on the front side of the label printer 2, and the measured value data is output to the label printing and pasting device 2.

For example, when a tray W1 containing fish is packaged and a label is attached to the packaged product W, the label is usually attached at position A shown in FIG. Therefore, the article is placed on the article supply device 51 so that the packaged article W is carried out onto the conveyor 6 at the packaged article carrying-out position P in the state shown in FIG. When the packaged product W carried out onto the conveyor 6 turns off the phototube switch 29, the forward and backward position of the packaged product W is determined, and the conveyor 6 moves from the packaged product delivery position P to the label pasting position R. and approaches the label printing and pasting device 2. Next, as shown in FIG. 7, when the packaged product W turns off the phototube switch 30, the left and right sides of the packaged product W correspond to the position A of the packaged product W directly below the label feeding port 2a of the label printing and applicator 2. The directional position is also determined, and the label L is
is fed out and pasted at this A position. after that,
As shown in FIG. 8, the conveyor 6 moves in the opposite direction on the rail 5 and separates from the label printing and pasting device 2.
The flat belt 13 and both auxiliary rollers 24 and 25 stop when they reach the packaged product unloading position P.
rotates again and the packaged product W is carried out.

On the other hand, as shown in FIG. 9, a label L may be attached to the B position of the packaged product W. Therefore, in this case, the product is placed on the product supply device 51 so that the package W is carried out onto the conveyor 6 at the package delivery position P in the state shown in FIG. 9, and the feeding direction of the label L is reversed. Make it. In this way, the packaged product W
Labels L can be pasted on both positions A and B.

Even when the sizes of the packages W are different as shown in FIGS. 10 and 11, the packages W stop when both phototube switches 29 and 30 are turned off, as in the case described above. The A position always corresponds to the position immediately below the label outlet 2a of the label printing and pasting device 2. Therefore, the label L can be attached to both positions A and B of the packaged product W regardless of the size of the packaged product W.

Furthermore, as shown in FIGS. 12 and 13,
If the phototube switch 29 is made movable and adjustable so that it can take the position shown by the solid line and the position shown by the imaginary line, the labels L can be affixed to the four corners of the packaged product W. That is, when the phototube switch 29 is in the position shown by the solid line, the product is loaded into the product supply device 51 so that the package W is delivered onto the conveyor 6 at the package delivery position P in the state shown in FIG. The packaged product W on the conveyor 6 is placed on the phototube switch 29.
After passing through, the rotation of the conveyor 6 stops and the conveyor 6 approaches the label printing and pasting device 2.
The movement of the conveyor 6 is stopped when the package W turns off the phototube switch 30.
If you do this, the label L will be placed at the C position of the packaged product W.
can be pasted. Further, as shown in FIG. 13, by reversing the feeding direction of the packaged product W and the label feeding direction, the label L can also be attached to the D position of the packaged product W. On the other hand, when the phototube switch 29 is at the position shown by the imaginary line, the label L can be affixed to both positions A and B of the package W, as in the case described above.

The packaged product positioning device according to the present invention is not limited to the above-described label attachment, but can be used for various operations that require positioning of packaged products, such as when directly printing on a packaged product.

Effects of the Invention In short, when the present invention is used for labeling, for example, the phototube switch 2 for position control in the longitudinal direction detects the position of the packaged product W on the conveyor 6.
9 and a phototube switch 30 for controlling the horizontal position
By controlling the drive of the conveyor 6 in the front, rear, left and right directions, the label pasting position of the package W on the label printing and pasting device 2 can be kept constant.
Even if the size of the packaged product W changes, there is no need to change the mounting position of the label printing and pasting device 2 each time, which helps improve work efficiency. In addition, since only the phototube switches 29 and 30 are used to detect the position of the packaged product W, there is no displacement of the packaged product W due to contact with limit switches, stoppers, etc., and the label L can be correctly affixed at the correct position. be able to.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a packaging machine equipped with a package positioning device according to an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a front view, and FIG. 5 is an enlarged cross-sectional view, FIGS. 6 to 8 are explanatory diagrams showing the label pasting action, and FIG. 9 is an explanatory diagram of the action when the label pasting position is changed. , Fig. 10 and Fig. 11 are explanatory diagrams of the effect when changing the size of the packaged product.
FIGS. 2 and 13 are explanatory views of the operation of another embodiment in which the mounting position of the phototube switch for controlling the longitudinal position is changed. Packaged product unloading table 1, label printing and pasting device 2, label feeding outlet 2a, rail 5, conveyor 6, flat belt 1
3, heater 14, unloading electric motor 15, reciprocating electric motor 19, phototube switches 29, 30,
Weighing device 52, package W, label L.

Claims (1)

[Claims] 1. The conveyor 6 of the packaged product unloading table 1 on which the packaged product W is placed is capable of reciprocating in the left and right direction substantially perpendicular to the direction of transporting the packaged product W, that is, the front-back direction,
The package delivery table 1 is equipped with a phototube switch 29 that controls the longitudinal drive of the conveyor 6 by detecting the position of the package W so as to determine the longitudinal position of the package W conveyed onto the conveyor 6; A packaged product positioning device in a packaging machine unloading section, characterized in that a phototube switch 30 is provided for controlling the horizontal drive of the conveyor 6 by detecting the position of the packaged product W so as to determine the lateral position of the packaged product W.