JPH0457718A - Article feeding device for packaging machine - Google Patents

Abstract

PURPOSE:To make it possible to perform no-tray type packaging in addition to tray type packaging by a method wherein by the function of a differential mechanism, the rotation of a driving rotary shaft is transmitted at the same speed of an endless rotational rope, to the other endless rotational rope, and by operating a rotation adjusting means, only the other endless rotational rope is made rotatable to the first endless rotational rope. CONSTITUTION:When a no-tray article is packaged, a signal concerning the type and width dimension of an article 69 is inputted to a micro-computer. When the no-tray article 69 is elevated to a packaging section S, the said article 69 comes into contact with a packaging film F and lifts the same film F, and the film F is folded under the article 69 to package the article 69. When a tray article is packaged, when a signal concerning the type and width dimension of the article is inputted, at an article carrying device, an interval W between a carrying part 53 of an article positioning member and a pinching part 54 becomes the most expanded condition regardless of the width dimension of the tray article. Then, the article is pinched between a pinching rod 15 and a guide plate 30 of a stopper member 28. The process after this motion is the same as the no-tray article.

Description

Detailed Description of the Invention Purpose of the Invention [Industrial Field of Application] This invention provides a packaging machine that folds a packaging film onto the underside of an article while covering the article with the packaging film from above. The invention relates to a device for supplying goods to a person.

[Prior Art] Conventionally, as this type of device, for example, Japanese Patent Laid-Open No. 58-15
There is one shown in Publication No. 7626. In the same device,
The goods are placed below the packaging section and raised and lowered - as the goods are raised and lowered,
The present invention includes an article receiving device that brings an article into contact with a packaging film supplied to the packaging section and lifts the film, and an article conveying device that supplies the article onto the article holder of the article receiving device.

When the article is placed on the article conveying device, the article is transferred toward the article pedestal device and placed on the article pedestal at the lowest position. After that, the article holder rises to the packaging section,
The article is then wrapped in film.

By the way, as conventional packaging formats, there are a tray method in which stored items are placed in a tray and wrapped with a film, and a no-tray method in which stored items are directly wrapped in a film.

In the case of the no-tray method, since the outer shape of the article is not constant, the article is likely to become unstable when conveyed by the article conveying device or placed on the article receiving device. In the packaging machine described in JP-A-58-157626, due to the structure of its article supply device, it was difficult to use the no-tray method, and only the tray method could be used. Therefore, as a packaging machine exclusively for the no-tray method, there is one described in, for example, Japanese Patent Laid-Open No. 57-68325.

SUMMARY OF THE INVENTION An object of the present invention is to provide an article conveying device that is capable of performing not only a tray method but also a no-tray method in a packaging machine equipped with an article receiving stand device and an article conveying device as described above.

Structure of the Invention [Means for Solving the Problems] In view of this object, the article supplying device according to the present invention has an article supplying device that supplies articles 69 under the packaging section S, as shown in the drawings of the embodiments to be described later.
．． An article pedestal device 1 that lifts the package F by placing an article 69.70 on it and lifts the package F by bringing the article 69. In a packaging machine equipped with an article conveying device 39 that supplies articles 69 and 70 onto one article receiving stand 6, the article conveying device 39
A pair of endless rotating cables 51.5 are arranged in parallel with each other.
A plurality of conveyance sections 53 are attached at equal intervals to one of the two endless rotating ropes 51, and a plurality of clamping sections 54 are attached at equal intervals to the other endless rotating rope 52. 53
A set of article positioning members 55 consisting of a and a clamping part 54 are arranged along the conveyance direction A by a plurality of sets of endless rotating cables 51 and 52, and a drive rotating shaft 48 for rotating one of the endless rotating cables 51. The other endless rotating cable 52 is interlocked with the other endless rotating cable 52 via a differential mechanism 58, and a rotation adjustment mechanism for rotating the other endless rotating cable 52 is provided between the differential mechanism 58 and the other endless rotating cable 52. Means 64 is provided, and by the action of the differential mechanism 58, the rotation of the drive rotation shaft 48 is directed to one of the endless rotation cables 5.
In addition to transmitting the transmission to the other endless rotating rope 52 at the same degree as 1, the rotation adjustment means 64 is operated to make only the other endless rotating rope 52 rotatable with respect to the one endless rotating rope 51. be.

[Function] When the notebook tray article 69 is supplied to the packaging section S by the article conveying device 39 and the article receiving device 1, the notebook tray article 69 is transferred to the packaging section S by the conveying section 53 and the clamping section 54 of the article positioning member 55 in the article conveying device 39. The article 69 is held and conveyed to the article receiving device 1.

By this clamping, the note tray article 69 is reliably positioned and placed on the article holder 6.

In the article positioning member 55, the rotary rope 51 that moves the transport section 53 and the rotary rope 52 that moves the clamping section 54 are interlocked via the differential mechanism 58. Not only can they be moved at the same rate by holding them between the notebook tray article 69 and the holding portion 54, but also the holding portion 54 can be moved relative to the conveying portion 53 by the rotation adjusting means 64 according to the width dimension of the notebook tray article 69. The distance W between them can be changed by adjusting the movement.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

First, the article pedestal device 1 will be explained in detail.

Pillars 3 are erected on both left and right sides of the machine frame 2, and a pair of upper and lower sliding members 4.5 are fitted into both the columns 3 so as to be movable up and down along the columns 3. An article holder 6 is connected between the left and right upper moving members 4 .

In this article holder 6, four support rods 7 are extended upwardly at the center between the left and right active members 4, and a support shaft 8 is attached to the upper end of each support rod 7 to extend rearward. It is extended horizontally. There are also four support rods 9 between the left and right tank moving members 5 on the lower side.
is extended upward, and a support shaft 10 is also provided at the upper end of each support rod 9.
is attached and extends horizontally to the rear. Each of the support shafts 10 is located on the same axis as the support shafts 8 on the rear side thereof. A main support member 11 is fitted to each of the support shafts 8, a sub-support member 12 is fitted to each of the support shafts 10, and each support member 11.12 is attached to a tiltable mounting table 1.
1a and 12a.

Of the four support rods 7 on the upper left and right tank moving part shrine 4, the central support rods 7 each have a pair of upper and lower levers 13.
14 is rotatably supported in the vertical direction by shafts 13a and 14a, and a clamping rod 15 is rotatably supported by shafts 15a and 15b between the front ends of the two levers 13 and 14, and a clamping rod 15 is rotatably supported by shafts 15a and 15b. It is extended upwards. A spring 16 is connected between the lower end of the clamping rod 15 and the support rod 7, and the biasing force of the spring 16 causes the levers 13. 12 mounting tables 1
It is located at a lower position than above 1a and 12a.

A solenoid 17 is located in the center between the left and right moving members 4 on the upper side.
is attached, and a rod 17a that moves downward when the solenoid 17 is energized is connected between the rear ends of the lower left and right inner levers 14. When the solenoid 17 is energized, the rod 17a moves downward, both levers 13.14 rotate upward, and the clamping rod 15 resists the biasing force of the spring 16 to move the support member 11.12 onto the mounting base. 11a and 12a in parallel.

A drive shaft 18 is supported inside the rear machine frame 2, and drive levers 19 are attached to both ends of the drive shaft 18. A drive lever 20 integrated with f120a is rotatably supported.

This opening drive lever 20 is connected to the drive shaft 1 via a clutch 21.
It is linked to 8. Each drive lever 19.20 has a drive shaft 1
8, an outer opening drive lever 19 is attached to the upper left and right tank moving members 4, and an inner opening drive lever 20 is attached to the lower left and right barrel moving members 5. It is attached.

An electric motor 22 and a reduction gear 23 interlocked with the electric motor 22 are installed in the machine frame 2 corresponding to one of the outer opening drive levers 19, and are attached to an output shaft 23a of the reduction gear 23. One drive lever 19 is adapted to interlock with the cam 24.

When the electric motor 22 is driven, the grooved cam 24 is rotated via the reducer 23, the drive shaft 18 is rotated, and the outer opening drive lever 19 is tilted back and forth in the vertical direction.
With the clutch 21 engaged, the inner opening drive lever 20 tilts back and forth in the vertical direction. When the outer opening drive lever 19 is tilted, the upper two tank moving members 4 move up and down along the support column 3, and each main support member 11 also moves up and down. Further, when the inner opening drive lever 20 is tilted, the lower two tank moving members 5 move up and down along the support column 3, and each sub-support member 12 also moves up and down.

A bracket 25 is attached to the inside of the machine frame 2 on the rear side above the drive shaft 18, and a slide plate 27 is mounted on a rail 26 provided below the bracket 25 so as to move horizontally in the front and back direction. is supported by A stopper member 28 is supported by the slide plate 27 so as to be movable in the front-rear direction, and the stopper member 28 is biased forward by a spring 2SI connected between them. A gate-shaped guide plate 30 is attached to the front end of the stopper member 28, and a space (not shown) is formed at the lower end of the guide plate 30. (not shown) are arranged in parallel in the vertical direction. A timing belt 35 rotated by an electric motor 34 is wrapped between both pulleys 35a and 35b on a bracket 33 attached to the inside of the machine frame 2 below the bracket 25, and the slide plate 27 is attached to the timing belt 35. The gear 36.3 is attached to the electric motor 34.
The encoder 38 is interlocked via the encoder 7. and - timing belt 35 by electric motor 34;
When the slide plate 27 rotates, the stopper member 2
8 moves in the front and back direction. The guide plate 30 of the stopper member 28 is arranged to face the left and right armrests 15 when they move upward.

Next, the article 69 is placed on the article pedestal 6 of the article pedestal device 1.
The article conveying device 239 that supplies the article 70 will be described in detail.

A plurality of round belts 41, 42 are stretched between the pulleys 43, 44, 45 from the article receiving device 1 to the front outside of the machine frame 2, and are arranged in parallel in the left and right direction in a horizontal state. It has become. A pair of sprockets 46 and 47 are supported on a rotating shaft 45a that supports the outermost front pulley 45.
One sprocket 46 can rotate integrally with the coaxial shaft 45a, and the other tin rocket 47 can rotate with respect to the coaxial shaft 45a. A pair of sprockets 49 and 50 are supported on a rotating shaft 48 supported inside the rear machine frame 2 in the vicinity of the article holder device 1, and one sprocket 49 is rotatable integrally with the same shaft 48, and The other sprocket 50 is rotatable about the same shaft 48. An endless chain 51 is wound between the sprockets 46, 49 in parallel with the round belt 41, 42, and an endless chain 52 is placed adjacent to the chain 51 between the sprockets 47, 50. wrapped in parallel. A plurality of conveyance sections 53 are attached to one chain 51 at equal intervals, and the other chain 52 has the same number of clamping sections 54 as the conveyance sections 53 at equally spaced positions rearward relative to the conveyance section 1153. The conveying section 53 and the holding section 54 form a set of article positioning members 55, which are attached at intervals. Note that the holding part 54 is the conveying part 53.
It is biased towards the object and remains stationary.

Adjacent to the rotating shaft 48 and inside the rear machine frame 2, both rotating shafts 56 and 57 are supported on the same axis.
57 are connected by a differential gear mechanism 58. This differential gear mechanism 58 is conventionally known, and includes a bevel gear 58a attached to one rotating shaft 56, a bevel gear 58b attached to the other rotating shaft 57, and the bevel gears 58a, 58.
A pair of planetary bevel gears 58c and 58d meshing with b,
The umbrella gears 58c and 58d are configured to rotate around the other rotating shaft 57. Then, the rotation axis 5 on the negative side
When 6 rotates once, the other rotating shaft 57 also rotates once, but the gears 58a, 58b, 58c, 58d are arranged so that the rotation of the other rotating shaft 57 is not transmitted to the one rotating shaft 56.
The number of teeth is set.

A tin rocket 59.60 is attached to the rotation shaft 48.56, and a sprocket 62 is also attached to the 0 rotation shaft 57, on which a chain 61 is wound around both sprockets 59.60. The zero-rotation shaft 48, on which a chain 63 is also wound around the sprocket 50 on the shaft 48, is connected to the output shaft 23a of the reduction gear 23 via an intermittent transmission device (not shown). When the output shaft 23a rotates, the rotating shaft 48 rotates intermittently, and the intermittent rotation is transmitted to one rotating shaft 56 via the chain 61.

The rotation of the output shaft 64a of the electric motor 64 is transmitted to the rotary shaft 57 connected to the differential gear mechanism 58 through gears 65 and 66, and the rotation is transmitted to the potentiometer 68 through gears 66 and 67. is also being transmitted.

Next, the operation of the article supply device according to this embodiment will be described in detail.

First, as shown in FIGS. 1 to 3, when wrapping a note tray article 69, when a signal regarding the type and width of the article 69 is input to a microcomputer (not shown), the article holder device 1 The electric motor 34 is driven until the output of the encoder 38 interlocked with the electric motor 34 becomes an output stored in advance for each width dimension of the article 69.
The slide plate 27 and the stopper member 28 move in the front-rear direction, and the distance W between the guide plate 3o of the stopper member 28 and the holding part 15 (upward movement position) of the article holder 6 is automatically adjusted. Further, in the article conveyance device 39, the electric motor 64
The electric motor 64 is driven until the output of the potentiometer 68 interlocked with the width reaches the output stored in advance for each width dimension of the article 69, and its rotation is controlled by the gears 65, 66 and the rotating shaft 5.
7 and the chain 52 via the chain 63,
The clamping part 54 of each article positioning member 55 moves in the front-rear direction, and the clamping part 54 of each article positioning member 55 and the conveying part 53
The distance W between the two is automatically adjusted. In this case, since the differential gear mechanism 58 is provided, even if the rotating shaft 57 rotates, the rotation is not transmitted to the rotating shaft 56, and the chain 51 to which each conveyance section 53 is attached does not rotate.

When the electric motor 22 is driven, the main support member 11 and the sub support member 12 of the article pedestal 6 in the article pedestal device 1 are driven.
moves up and down, and the conveyors #153 and 54 of the article positioning members 55 move toward the article receiving device 1 due to the rotation of both chains 51 and 52 in the article conveying device 39. When the article pedestal 6 reaches the lowest position with the clamping part 15 in the article pedestal device 1 moving downward, the notebook tray article 69 held between the conveying part 53 of the article positioning member 55 and the clamping part 54 is placed on the article holder 6 and comes into contact with the guide plate 3o of the stopper member 28, and the article positioning member 5
Stop with 5. Then, the clamping part 15 moves upward and the note tray article 69 is clamped between the clamping part 15 and the guide plate 3o of the stopper member 28. Thereafter, when the article holder 6 rises together with the holding part 15, the note tray article 69 slides along the guide plate 30 and rises together with the article holder 6. Along with this rise, both chains 51 and 52 rotate again, and the conveying section 53 and the clamping section 54 of the article positioning member 55 move through the space in the lower half of the stopper member 28.

Although not shown, when the notebook tray article 69 rises to the packaging section S, the article 69 comes into contact with the packaging film F and lifts the film F, and the film F is folded into the lower flange of the article 69 and packaging is performed. be exposed.

When the article holder 6 reaches the lowest position during packaging, the next note tray article 69 is placed on the article holder 6 in the same way as in the case described above.

In this way, when the note tray article 69 is supplied to the packaging section S by the article conveyance device 39 and the article receiving table device 1, the conveyance section 53 of the article positioning member 55 in the article conveyance device 39
Since the notebook tray article 69 is held between the clamping portions 54 and conveyed to the article receiving device l, the notebook tray article 69 is
can be reliably positioned and placed on the article holder 6.

In the article positioning member 55, the chain 51 that moves the conveyance section 53 and the chain 52 that moves the clamping section 54 are interlocked via the differential gear mechanism 58, so that the note tray article 69 can be moved between the conveyance section 53 and the chain 52 that moves the clamping section 54. Not only can the items be moved at the same rate by holding them between the holding parts 54, but also the movement of only the holding parts 54 relative to the conveying part 53 can be adjusted according to the width dimension of the notebook tray articles 69. The interval W can be changed.

On the other hand, as shown in FIGS. 4 and 5, when packaging the tray article 70, the article 70 is stored in a microcomputer (not shown).
When a signal regarding the type and width of the article is input, the article conveying device 39 moves the article
The distance W between the tray article 7o and the holding portion 54 becomes widest regardless of the width dimension of the tray article 7o. Article pedestal device 1
The stopper member 28 stops at the most advanced position. When the tray article 7o reaches the article holder 6 and comes into contact with the guide plate 3o of the stopper member 28, the stopper member 28 moves together with the tray article 70 to gradually stop the tray article 7o, and the electric motor 34 The electric motor 34 is driven until the output of the interlocking encoder 38 reaches the output stored in advance for each width dimension of the tray article 70, and the distance between the article holder 6 and the holding part 15 (upward movement position) is increased. W
Then, the stopper member 28 stops on the article holder 6 together with the tray article 7o. Thereafter, the clamping part 15 moves upward to clamp the tray article 70 between the clamping part 15 and the guide plate 30 of the stopper member 28 . The subsequent operations are similar to those described for the notebook tray article 69.

Note that when the clutch 21 is disengaged in the article holder W1,
Only the main support member 11 of the article pedestal 6 moves up and down, and the sub support member 12 is at its lowest position! It has stopped at The sub-supporting members 12 are used depending on the size of the notebook tray article 69 and the tray article 70.

Effects of the Invention According to the present invention, in a packaging machine equipped with the article receiving device 1 and the article conveying device 39, it is possible to provide an article conveying device 239 that can perform not only the tray method but also the no-tray method. .

[Brief explanation of drawings]

FIG. 1 is a schematic plan cross-sectional view mainly showing the article conveying device in the article supply apparatus according to this embodiment for packaging notebook articles, and FIG. 2 mainly shows the article receiving device in the article supply apparatus. 3 is a schematic plan sectional view, FIG. 4 is a schematic plan sectional view mainly showing the article conveyance device in the article supply apparatus of this embodiment for packaging tray articles, and FIG. 5 is a schematic side sectional view. FIG. 2 is a schematic side sectional view mainly showing the article receiving device in the article supply device. 1... Article holder device, 6... Article holder, 39...
Article conveyance device, 51... chain (rotating cable), 52...
... Chain (rotating rope), 53 ... Conveyance section, 54 ...
- Holding part, 55... Article positioning member, 58... Differential gear mechanism, 64... Electric motor (rotation adjustment means),
69... No tray article, 70... Tray article, S
... Packaging department, F... Packaging film (packaging body).

Claims (1)

[Claims] 1. The article (69, 70) is placed below the packaging section (S) and is lifted up and down, and as the article (69, 70) is lifted and lowered, the article ( 69, 70) are brought into contact with each other and the packaging body (
an article pedestal device (1) that lifts up the article (6);
9, 70), in which one of the pair of endless rotary ropes (51, 52) disposed in parallel with each other in the article conveying device (39) A plurality of conveying sections (53) are attached at equal intervals to the endless rotating rope (51), and a plurality of clamping sections (54) are attached at equal intervals to the other endless rotating rope (52). , a set of article positioning members (5) consisting of the conveying section (53) and the holding section (54).
5) are arranged along the transport direction (A) by the endless rotating ropes (51, 52), and one of the endless rotating ropes ((51, 52)
) and the other endless rotating cable (52) are interlocked via a differential mechanism (58), and this differential mechanism (58) and the other endless rotating cable (52) ) is provided with a rotation adjustment means (64) for rotating the other endless rotating cable (52), and the differential mechanism (58) controls the rotation of the drive rotation shaft (48) to one side. Endless rotary rope (51) and the other endless rotary rope (52) of the same mode
An article in a packaging machine characterized in that the rotation adjustment means (64) is operated to make only the other endless rotating rope (52) rotatable with respect to the one endless rotating rope (51). Feeding device.