JPH03148408A - Article delivery control device in packaging machine - Google Patents

Abstract

PURPOSE:To automate delivery of trays by a method wherein when an article detecting sensor for starting cycle detects an article, a signal which operates a packaging machine as a first cycle is output, and when the completion of a N-th cycle is counted in accordance with a detecting signal from a cycle detecting sensor, a signal to stop the packaging machine is output, and transience is applied to the packaging machine up to the N-th cycle by one article. CONSTITUTION:A packaging machine is equipped with a packaging body feeding device D which feeds a packaging body 16a, article feeding devices A, B which feed an article 59, a packaging device E which places the packaging body 16a on the article 59, and an article delivery device G which delivers the packaged article 59. When an article detecting sensor for starting cycle 6 detects one article 59, the packaging machine operates, and feeding, packaging and delivery of this article 59 are performed. Operation of the packaging is performed from a first cycle to a N-th cycle of the article 59, and this article 59 is delivered at the N-th cycle. When the following article 59 is not fed by the time when the N-th cycle of the article 59 is completed, the packaging machine stops. In the meantime, when the following article 59 is fed by this time, the packaging machine continues its operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention [Industrial Application Field 1] This invention is applicable to, for example, a packaging machine that wraps trays containing fresh foods with stretch film, a packaging machine that wraps boxes with paper (paper), etc. This invention relates to a control device for transporting packaged articles in various types of packaging machines.

[Prior art J As a conventional packaging machine, for example, Japanese Patent Application Laid-Open No. 52-213298
There is one shown in Publication No. 4. This packaging machine includes a film take-up roll support device, a film feed device that supplies the film pulled out from the film take-up roll to a packaging section, and a tray placed below the packaging section that moves up and down. Accordingly, a packaging section (an article receiving device that brings a tray into contact with the supplied film to lift the film; an article conveying device that supplies the tray onto the article receiving stand of this article receiving device;
The rear folding member can be moved toward and away from the front folding member whose position is fixed in the packaging section, and as the rear folding member approaches and moves away, both the left and right folding members can be moved to RrJl, and the film is folded into the lower side of the tray. The present invention includes a film folding device, a heater device provided continuously to the front folding member of the film folding device on the carry-out side thereof, and an article carrying-out device provided above the film folding device.

[Problem to be Solved by the Invention] In this packaging machine, a drive signal is output every time one tray is fed, and the packaging machine is operated for one cycle, and the operation continues by continuous feeding of trays. In case,
- The tray supplied during the first cycle is unloaded during the third cycle. Therefore, when there is no supply of trays, no drive signal is output and the packaging machine stops.

However, since the preceding tray also stopped inside the packaging machine,
The manual switch is pressed to operate the packaging machine one cycle at a time, and the trays remaining in the packaging machine are taken out.

Conventionally, this manual operation has been troublesome, so the present invention has been devised to automate the unloading of the tray.

Structure of the Invention [Means for Solving the Problem 1 In view of this purpose, the article delivery 5111 of the packaging machine according to the present invention
As shown in the drawings of the embodiment described later, the device includes a packaging section S.
A package supply device 0 that supplies the package 16a to the packaging section S, article supply devices HA and B that supply the article 59 to the packaging section S, a packaging device tE that packages the package 16a to the article 59 in the packaging section S, Article unloading equipment NG for exporting article 59 and 1
As the 11th cycle, the article supply device A. In a packaging machine in which one article 59 supplied by B is conveyed out by the article unloading device G in the Nu cycle, the article for starting a cycle is detected by detecting the article 59 placed on the article receiving devices 1A and B. In addition to providing the detection sensor 6, a cycle detection sensor 12 for detecting the cycle of the packaging machine is also provided.
1 The cycle start article detection sensor 6 is for one article 5
9 is detected, the detection signal outputs a signal to operate the packaging machine as the first cycle, and the packaging machine is stopped when counting the end of the Nth cycle based on the detection signal from the cycle detection sensor 12. A part 15 is provided which outputs a signal and controls the packaging machine so that it operates up to the Nth cycle with one article 59.

[Function J] Now, the article detection sensor 6 for cycle start detects one article 5.
9 is detected, the packaging machine is operated to supply, package, and carry out the article 59. This packaging machine is operated from the 1st cycle to the Nth cycle of this article 59,
This article 59 is carried out in the Nth cycle. .

If the next article 59 is not supplied by the end of the Nth cycle of this article 59, the packaging machine stops. On the other hand, if the next article 59 has been supplied by this time, the packaging machine continues to operate based on this next article 59.

[Example] Hereinafter, an example in which the present invention was embodied in a stretch film packaging machine will be described according to Sun.

As shown in FIGS. 111 and 2, this packaging machine is divided into a lower machine frame 1 and an upper machine frame 2.

Further, the upper machine frame 2 is divided into a lower frame 2a and an upper frame 2b. The upper machine frame 2 is supported at the front end of the lower frame 2a so as to be movable relative to the upper front end of the lower machine frame 1, and can be opened and closed in the vertical direction relative to the lower machine frame 1.

The upper frame 2b of the upper machine frame 2 is connected to the upper machine frame 2 at its front end.
The front end of the lower frame 2a is supported so that it can be opened and closed vertically relative to the lower frame 2a.

As shown in FIGS. 2 and 3.4, an article conveying device 1A is disposed at the rear of the lower machine frame 1. As shown in FIGS.

In this article conveyance device fA, a plurality of round belts 3
An article transport conveyor 3, which has been passed through a, is rotated by a drive motor 4 with a speed reduction device via an interlocking chain 5, and an article detection sensor 6 for starting a cycle is attached to the starting end of the conveyor 3. The sensor 6 is a rechargeable switch,
It consists of a light projecting element 6a and a light receiving element 6b. This sensor 6
On the article conveyance side (on the lower side of the conveyor 3), a comb-shaped stopper member 7 is supported so as to be tiltable in the vertical direction and can be retracted onto the round belt 3a of the conveyor 3.This stopper member 7 is interlocked with the drive motor 4 via the interlocking chain 5 and cam 8114118.

At the terminal end of the article conveyor 3, there is an article receiving device 1B.
is installed.

In this article pedestal device 1B, an article pedestal 9 is supported so as to be lowerable, and this article pedestal 9 is connected to the drive motor 4 via a 31-movement mechanism 10. conveyor 3
A stopper plate 11 is erected at the terminal end of the article holder 9 so as to face the article holder 9.

A cycle detection sensor 12 is mounted corresponding to the drive motor 4. This cycle detection sensor 12 is a rotary encoder and is adapted to detect a lever 13 rotated by the drive motor 4.

As shown at 911, the cycle start article detection sensor 6 and the cycle detection sensor 12 are each connected to the CPU 15 via the input/output interface 14.

On the front side of the lower machine frame 1, there is a film take-up roll support device RC.
is installed.

In this film winding wheel support iIWICk:
A film take-up wheel 16 is rotatably supported, and the film 16a can be pulled out from the take-up wheel 16.

As shown in FIGS. 2 and 5.6, a film supply device is disposed in the lower frame 2a of the upper machine frame 2 above the WM one-item receiving device 1B.

This film supply device WID is connected to the film take-up roll 1.
a fixed gripping member 17 that grips the leading end of the film 16a pulled out from the fixed gripping member 17; and a movable gripping member 18 that grips the leading end of the film 16a on the fixed gripping member 17 while moving toward and away from the fixed gripping member 17. We are prepared.

The fixed gripping member 17 includes fixed gripping plates 19 that can be opened and closed with each other.
and a movable grip plate 20, and both upper and lower grips O that can be opened and closed with each other.
- la 21, 22 are provided, and the leading end of the film 16a passes through both gripping plates 19 and 21 and 22.
．． 201Ik - to be retained. The upper holding roller 21 is connected to a brake 23 attached to the lower frame 2a. Above the two gripping plates 19, 20, the fixed gripping member 17 is provided with a notch 24.

The movable gripping member 18 is attached to both eye movement shafts 2 supported by the lower frame 2a.
5 so as to be movable in the axial direction thereof. This movable gripping member 18 is provided with a fixed gripping plate 26 and a movable gripping plate 27 that can be opened and closed, and a knife 28 located above them.

A solenoid 29 is connected to the lower frame 2 below the fixed gripping member 17.
a, and the I between this solenoid 29 and the eye movement shaft 25
1 and 1 moving shaft 25 and movable gripping plate 2 of movable gripping member 18
7 and lI&: are connected with wires 30 and 31, respectively. The movable gripping plate 27 is configured to be moved via a wire 30, a rotating shaft 25, and a wire 31 as the solenoid 29 is deenergized. A rotary belt 32 is passed over the lower frame 2b, and this rotary belt 32 is connected to the movable gripping member 18. This rotating belt 32 is rotated by a drive motor 33 attached to the lower machine frame 1. Then, when the belt 32 rotates,
The movable gripping member 18 moves toward and away from the fixed gripping member 17.

As shown in FIG. 2111 and FIG. 7, a film folding device E is disposed in the lower frame 2a of the upper machine frame 2 above the film supply device fD.

This film folding device fE& includes a front folding member 34, a fine folding member 35, and both left and right folding members 36. The front folding part $134 has both left and right support frames 37 (supported front and rear rotating pulleys 38.39, and both rotating pulleys 38.391).
Both support frames 37 are fixed to mounting plates 4 attached to the lower frame 2a. The rear folding part 4135 has folding rows 543 attached along both front and upper edges of the support plate 42, and the support plate 4 is attached to the guide rail 44 attached to the lower frame 2a.
Both left and right end portions of 2 are supported so as to be movable in the front-back direction. A rotating belt 45 is passed over the lower frame 2a, and both left and right ends of the support plate 42 are connected to this rotating belt 45. The left and right folding members 36 are supported by a mounting plate 46 attached to the lower frame 2a so as to be rotatable in the left-right direction by a support shaft 47, and are interlocked with the support plate 42 via an interlocking link 48 and a fixed link 49. has been done. And belt 45
When the rear folding member 35 approaches and moves away from the front folding member 34 as the rear folding member 35 rotates, both the left and right folding members 36 open and close via the interlocking link 48.

A heater device iF is disposed continuously in front of the front folding member 34 of the film folding device E.

In this heater device F, a flat conveying belt 50 is passed over, and a heater plate 51 is inserted into the flat belt 50.

2111 and FIG. 8 (Film folding equipment WE as shown)
Above the upper frame 2b of the upper machine frame 2, there is disposed an article carrying device @G on which a carrying belt 52 is hung.

A drive shaft 53 for rotating the rotating belt 45 of the film folding device 1E is supported at the front end of the lower machine frame 1.
The rotation of the drive motor 4 of the lower machine frame 1 is transmitted to this drive shaft 53 via an interlocking mechanism (not shown). Above this drive shaft 53, the lower machine frame 1
A drive shaft 54 is supported at the upper front end of the
Also, the rotation of the drive motor 4 of the lower machine frame 1 is transmitted via an interlocking mechanism (not shown). This reciprocating rotation of the drive shaft 54 is caused by the flat belt 5 of the heater equipment RF.
0 (transmitted to the front rotary pulley 3 of the front folding member 34 of the film folding device WE via the round belt 55)
To 8: It is intended to be transmitted. Also, this drive shaft 5
The reciprocating rotation of 4 is transmitted via the gears 56, 57 and the round belt 58 to the delivery belt 52 of the article delivery device HG.

The drive shaft 54 supported at the upper front end of the lower machine frame 1 serves as a dynamic fulcrum for the lower frame 2a and soil frame 2b of the upper machine frame 2.

The drive motor 4 of the article conveyance device A and the solenoid 29 and drive motor 33 of the film supply MINO are connected to the CPU 15 as shown in FIG.
is based on detection signals from the rechargeable switch 6 as a cycle start article detection sensor and the 0-tally encoder 12 as a cycle detection sensor.
3 and solenoid 29 are actuated as described below.

Next, the operation of the packaging machine configured as described above for packaging will be described in detail with reference to FIGS. 10(a) to 10(e).

In the film supply device, when the movable gripping member 18 is spaced apart from the fixed gripping member 17 and the film 16a is stretched between the gripping parts 11117 and 18, as shown in FIG. The film 16a pulled out from the take-up roller 16 passes through both upper and lower clamping rollers 21 and 22 of the fixed gripping member 17, and is held between the fixed gripping plate 19 and the movable gripping plate 20 of the fixed gripping member 17. - and is held between the fixed grip plate 26 and the movable grip plate 27 of the movable grip member 18. The upper holding roller 21 is prevented from rotating by the action of a brake 23.

Items in this state (things stored in the tray 59)
When the pedestal 9 on which the film is placed rises, as shown in FIG.
Also, it is lifted to the packaging section S while being held between the fixed gripping plate 26 and the movable gripping plate 27 of the movable gripping member 18,
The film 16a stretches to cover the tray 59 from above.

Next, when the rear folding member 35 approaches the front folding member 34,
The left and right folded S materials 36 close each other, and the rear folded member 35 and both left and right folded members 36 are attached to the film 16 under the tray 59.
It cuts into a. When the rear folding member 35 and the left and right folding members 36 dig into the lower side of the tray 59 to some extent and the tray 59 is placed thereon, the article receiving stand 9 is lowered. And the 101i1 (
As shown in C), the film 16a is folded under the tray 59 from both the rear and left and right directions by the rear folding member 35 and the left and right folding members 36. This folding movable gripping member 1
8 is released from holding the film 16a.

Thereafter, the movable gripping member 18 approaches the fixed gripping member 17. After folding by the rear folding member 35 and both left and right folding members 36, the article conveyance device! Carrying out belt 52#L of G, round belt 40 of front folding member 34, and flat belt 5 for carrying out
0 rotates. When the carry-out belt 52 rotates, the tray 59 is carried out toward the front folding part @34 and placed on the round belt 40 of the front folding member 34, as shown in FIG. 10(d). The front folding member 34 is placed under the tray 59 to hold the film 16a.
It bites into. In synchronization with this unloading of the tray 59, the knife 28 of the movable gripping member 18 opens the cutting groove 28 of the fixed gripping member 17.
, the film 16a is pushed by the knife 28 and bites into the cut 124, and the knife 28 cuts the film 16a.
a is cut. After this cutting, the brake 23 is released and the upper holding roller 21 becomes rotatable, and the film 16
At the same time that the clamping of the film 16a is released, the movable gripping plate 27 of the movable gripping member 18 closes, and the tip of the film 16a on the fixed gripping member 17 is gripped by the movable gripping member 18.

Then, as shown in FIG. 10(e), the movable gripping member 18
When the is separated from the fixed grip member 17, the 10111l (
As shown in a), the film 16a gripped by the movable gripping member 18 is pulled out from the film winding roll 16 and stretched onto both gripping members 17 and 18a. The rear folding member 35 is separated from the front folding member 34, and both left and right folding members 36 are opened to each other.

As shown in FIG. 10 (1)), when the tray 59 is placed on the central part of the starting end of the article transport conveyor 3 during this folding, the tray 59 is sent toward the article receiving table 9, and a stopper protruding above the conveyor 3 is placed on the tray 59. It comes into contact with member 7 and stops once. When the article holder 9 reaches the lowest position and the stopper member 7 retracts below the conveyor 3, the 10th
Ti! As shown in 1(c) and 1(d), the tray 59 is fed again, comes into contact with the stopper plate 11, and stops at the end of the conveyor 3. The tray 59 on the front folding member 34 is also folded from the front and placed on the carry-out Kabira belt 50, where the lower folded portion of the tray 59 is brought into close contact with the heater plate 51.

When the article holder 9 is raised, the film 16a is packaged in the tray 59 in the same manner as described above.

In this way, in the packaging machine of this embodiment, the tray 59 is fed in the first cycle, the tray 59 is folded in the second cycle, and the tray 59 is carried out in the third cycle. Exporting will proceed at the same time.

Particularly in this embodiment, when the rechargeable switch 6 as a cycle detection article detection sensor detects the summer tray 59 in the article conveyance device A as shown in FIG. 11, the detection signal is output as shown in FIG. Based on the signal, the CPU 15 outputs a drive signal S to both drive motors 4 and 33 and the solenoid 29, and the tray 59 of
■Cycle start (N0.1) is started. In this second cycle, the operations shown in FIGS. 10(a) to 10(e) &- described above are performed.

If the next tray 59 is not supplied even after the ■th cycle (N0.3) of the tray 59 (■) is completed, the drive signal @ S■ is output, but the solenoid 29&- drive signal is not output, and the film 16a is not drawn out as shown in FIGS. 10(e) and (a) among FIGS. 10(a) to (e). do not have. Also, the ■th cycle (NO
.

In 3), the drive signal S■ is output to the motor 4, but the drive signal is not output to the Trail 29 and the motor 33, and the first
101l(e) of Figures 0(a) to (e) (
In addition to the drawer d of the film 16a as shown in a),
The cutting by the knife 28 is also not performed as shown in No. 101iil(d).

Furthermore, in NO, 4, no drive signal is output and the packaging machine stops.

As shown in the 11th Fj4, if the tray 59 of ■ is supplied before the ■th cycle (N0.2) of the tray 59 of ■ is started, the ■■■ cycle (N0.2) of the tray 59 of
o, 2.3.4) respectively, each drive signal S■, S■, S
■ is output, but in NO, 2, the i! of the tray 59 of ■ is higher than the drive signal S■ of the tray 59 of I! The motion signal S■ gives priority to the operations shown in FIGS. 10(a) to (e), and in the case of NO, 3, the Il! of the tray 59 of I! lJ signal S■
The drive signal S2 of the first toy 59 is given priority over the drive signal S2, and the operation described above is performed based on it. At N0.4, the operation based on the drive signal @S■ for the tray 59 is performed.

Next, as shown in FIG. 11, before the ■th cycle (N0.4) of the tray 59 starts, the tray 5 of the
9 is supplied, the ■th cycle (
Even if the tray 59 (■) is supplied before the end of N0.6), the drive signals S■, S■, S■
As mentioned above, priority is given in that order, and operations are performed based on that order.

As shown in FIG. 11, if the V tray 59 is not supplied even after the ■ cycle (N0.9) of the ■ tray 59 is completed, no drive signal is output at NO.10. The packaging machine stops.

Before the stop, the tray 59 of ■ is in the ■ cycle (N0.
9), the tray 59 will never remain in the packaging machine. Therefore, when the packaging machine is stopped due to the supply of trays 59 being cut off during operation of the packaging machine, there is no need to carry out the operation of carrying out the trays 59 remaining in the packaging machine.

Effects of the Invention According to the present invention, even if the supply of trays 59 is interrupted and packaging iim is stopped while the packaging machine is in operation, the trays 59 during packaging can be
The tray 59 is always carried out and does not remain in the packaging machine, and in such a case, the carrying out of the tray 59 can be automated, improving work efficiency.

[Brief explanation of the drawing]

jllll! ! I is a side view of the stretch film packaging machine according to the first example of this example, FIG. 2 is a longitudinal cross-sectional view of the same wrapping machine, and FIG. 3 is the article conveyance device, article pedestal device, and film take-up roll support of the same packaging machine. FIG. 4 is a partial cross-sectional view along x-xsm of FIG. 3, FIG. 5 is a partial cross-sectional view showing the film supply opening, and FIG.
Partial Figure 1iii showing awling solenoid, No. 71
1 is a partial plan cross-sectional view showing the film folding device and the heater device; FIG. 8 is a partially cutaway plan view showing the article delivery IIH;
Figure 9 is an electric network diagram, Figure 10 (a), (b) (
c), (d), and (C) are explanatory diagrams showing the packaging action, respectively, and FIG. 11 is an explanatory diagram of the cycle accompanying tray feeding. 1...Lower machine frame, 2...Upper machine frame, 2b-...
Lower frame, 2b--Upper frame, 3... Article transport conveyor, 4... II motor, 6... Rechargeable switch as an article detection sensor for starting a cycle, 9... Article holder, 12--Rotary encoder as a cycle detection sensor, 13--Lever, 15-CPU (control unit)
, 16... Film winding roll, 16 a-... Film (packaging body), 1 Fu... Fixed gripping member, 18-...
Movable gripping member, 33--Drive motor, 3--Front folding member, 35--Rear folding member, 3 Row...Both left and right folding members, 50--Flat belt for carrying out, 51--Heater Board, 52... Carrying out belt, 59-) Ray (one item), A-
...Article transport device (article supply device), B--article receiving device (one-item supply device), C--film take-up roll support device, D... film supply device, E... film folding device. Equipment (packaging equipment), F-... heater equipment, G...
Article conveyance device, S... packaging department.

Claims (1)

[Claims] 1. A package supply device (D) that supplies the package (16a) to the packaging section (S), and an article supply device (D) that supplies the article (59) to the packaging section (S).
A, B), and the package (16a) is attached to the article (59) in the packaging section (S).
A packaging device (E) for packaging a packaged article (59), and an article discharging device (G) for conveying out a packaged article (59), and one article (59) supplied by the article supplying device (A, B) in the first cycle. ) is carried out by the article discharging device (G) in the Nth cycle, a cycle start article detection sensor ( 6) and a cycle detection sensor (12) for detecting the cycle of the packaging machine, and when the cycle start article detection sensor (6) detects one article (59), the detection signal is used to start the first cycle. outputs a signal to operate the packaging machine, and outputs a signal to stop the packaging machine when the end of the Nth cycle is counted based on the detection signal from the cycle detection sensor (12), and one article (59) An article delivery control device for a packaging machine, characterized in that a control unit (15) is provided for driving and controlling the packaging machine so as to operate the packaging machine up to the Nth cycle.