JPH07232706A - Size adjuster for product receiving base in stretch-film packing machine - Google Patents

Abstract

PURPOSE:To position product mounting members at an optional position according to an empty area of a packing part and a product size and also hold the product with good stability. CONSTITUTION:A part of movable mounting members 17 among respective mounting members 13, 17 placed on a support bracket 11 which rises and drops are supported movably along an axial line C of a spindle 14, so that a relative position of a product mounting face 26a on the respective mounting members 13, 17 can change on the approximately same plane along a product supplying direction. The movable mounting member 17 is moved by a wire 21 and a spring 24. When a motor is rotated according to a product width, the wire 21 is wound by a winding drum or drawn out from it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretch film wrapping machine, and more particularly to a size adjusting mechanism for a cradle for supplying a wrapping section with a stuffed article.

[0002]

2. Description of the Related Art Conventionally, as a packaging machine of this type, for example, there is one shown in JP-A-62-193909. In this packaging machine, the rear movable transport mechanism of the front and rear transport mechanisms of the film transport device is moved and adjusted with respect to the front fixed transport mechanism in accordance with the width of the packaging film before the packaging. Thereafter, the article is placed from the article supply device on each mounting table of the article receiving device, and a packaging film of a predetermined length is fed by the film transport device to a position below the packaging portion between the folding members in the film folding device. . And
When the article ascends together with the article cradle device, the packaging film is lifted by the article to the packaging section. Next, in the film folding device, each folding member is closed so as to scoop the lower side of the article from the open state, and the packaging film is wound around the lower part of the article, and at that time, each mounting table of the article receiving device has each folding member. And is tilted from the standing state.

Arrangement of the respective mounting tables in the article receiving apparatus is within the area of the space formed between the front and rear transport mechanisms of the film transport apparatus and between the folding members in the open state, and the articles to be packaged. The positioning is set according to the maximum dimension of.

[0004]

However, when an article of a predetermined size or smaller is placed on such an article receiving apparatus, a part of each placing table is exposed to the outside of the lower surface of the article, and this exposed placing table is used as an article. Does not function to support. When the film is folded as described above, each folding member scoops the lower side of the article so that the packaging film is wound around the lower part of the article while being in contact with the exposure placing table. May be disturbed.

Therefore, for example, in the article receiving device disclosed in Japanese Patent Laid-Open No. 5-270522, each placing table is divided into a main placing table and a sub placing table, and the sub placing table is supported so as to be vertically movable. is doing. Therefore, when setting the film transporting device for each film width determined according to the article width, it is necessary to avoid interference between the film transporting device and this when the mounting table is raised, and in some cases the sub-mounting platform cannot be used. It is difficult to set the mounting table in an optimum state according to the size of the article. In that case, the same drawbacks as the above problems are pointed out. It is considered that this is because the number of setting positions of the mounting table is limited.

Further, when a small-sized article is to be placed on the article receiving device, the sub-mounting table must be moved downward, and the vertical movement range avoids interference between the sub-mounting table and other parts. Therefore, there is a drawback that a large space is required and the article receiving apparatus becomes large in size. Further, since the article mounting height of each sub-mounting table and the article mounting height of each main mounting table change from each other, each sub-mounting table that has moved downward functions as a support for the small-sized article when it is loaded. No, not all the mounts are being used effectively.

The present invention improves the article placing table of the article receiving apparatus in such a stretch film packaging machine, and allows the placing table to be positioned and set at any position according to the vacant area of the packaging section and the article size. An object is to provide a cradle size adjusting device.

[0008]

A stretch film packaging machine according to the present invention comprises a film transport device 3, an article receiving device 2, an article supplying device 1 and a film folding device 4. The film transport device 3 has a packaging film 65 in the packaging section S.
Is designed to be transported. The article cradle device 2 moves up and down with respect to the packaging unit S. The article supply apparatus 1 is adapted to convey the article 64 to the article receiving apparatus 2. The film folding device 4 is adapted to fold the packaging film 65 into the product 64 with the packaging film 65 of the packaging section S being lifted by the product 64 on the cradle device 2.

The present invention improves the article cradle device 2. In this article cradle device 2, a plurality of placing members 13 and 17 are disposed on the supporting member 11 that moves up and down, and some or all of the placing members 13 and 17 are supported by this supporting member 11. It is movably supported along an axis C of a support shaft 14 extending from the member 11. And each mounting member 13,
The relative position of the article placement surface 26a on the 17 is the article supply direction R
It is possible to change on substantially the same plane along.
Further, a movable means for moving the movable mounting member 17 is provided.

The movable means comprises an elastic body 24 for urging the movable mounting member 17 on the support shaft 14 in the direction of the axis C thereof, and an interlocking rope 21 connected to the movable mounting member 17. . An operating means is linked to the interlocking rope 21, and the interlocking rope operating means moves the movable mounting member 17 against the elastic force of the elastic body 24.

The interlocking rope operation means includes a winding means such as a drum 30 for winding the interlocking rope 21 and a driving means such as a motor 31 for rotating the winding drum 30. Further, the control means 63 is provided for controlling the rotation of the motor 31 so as to set the position of the movable mounting member 17 based on the width W of the article 64 along the article supply direction R.

[0012]

When the movable placing member 17 is moved by the movable means 21 and 24, the relative positions of the article placing surfaces 26a change on substantially the same plane along the article feeding direction R, and the moving space becomes smaller. Articles 6 conveyed from the article supply device 1
4 is placed and supported on each of the mounting surfaces 26a, and the article mounting surface 26a of the movable mounting member 17 is also effectively used as a support for the article 64.

In this case, when the interlocking rope 21 as the movable means is operated by the interlocking rope operating means 30 and 31, the movable placing member 17 is moved by the elastic force of the elastic body 24 as the movable means or a force against it. To do.

When the winding drum 30 is rotated by the motor 31 as the interlocking rope operating means, the interlocking rope 21 is wound around or pulled out from the winding drum 30. This motor 3
Since 1 is rotationally controlled according to the article width W, the amount of rotation of the winding drum 30 is determined and the amount of winding of the interlocking rope 21 is adjusted.

[0015]

First, an outline of a stretch film packaging machine according to an embodiment of the present invention will be described. For convenience of explanation, the following description will be given with the upstream side in the article unloading direction in the article unloading device to be described later as the rear and the downstream side as the front.

As shown in FIGS. 1 and 2, this packaging machine is roughly divided into an article supply apparatus 1, an article cradle apparatus 2, a film conveying apparatus 3, a film folding apparatus 4, and an article unloading apparatus 5. The article cradle device 2 is provided so as to be able to move up and down within the machine frame 6. The article supply device 1 is disposed inside and outside the machine frame 6, and the inner end side thereof corresponds to the article receiving device 2. The article 64 placed on the article supply apparatus 1 is placed on the article cradle apparatus 2 at the lowest position and stopped.
The article supply device 1 is provided with a photoelectric switch 1a for detecting the article 64 being conveyed. The film transport device 3 is provided at the upper end of the machine frame 6 above the article cradle device 2. The film folding device 4 is provided above the film transport device 3 and at the upper end of the machine frame 6. The packaging part S in the film folding device 4 is above the film supply position of the film transport device 3, and the article receiving device 2 is moved up and down between the packaging part S and the inner end side of the article supply device 1. It has become. The article unloading device 5 is provided on the machine frame 6 above the film folding device 4.

Although the detailed description of the film transporting device 3 is omitted, a fixed transporting mechanism 3a on the front side and a movable transporting mechanism 3b on the rear side are provided, and the transporting mechanisms 3a and 3b of the both transporting mechanisms 3a and 3b are provided according to the film width. Positioning is performed with the distance N adjusted. Both of the transport mechanisms 3a, 3
b is provided with upper and lower flat belts respectively, and the film pulled out from the film winding roll is sandwiched between the upper and lower flat belts and conveyed in a direction orthogonal to the article discharge direction P, and the size of the article 64 is conveyed during the conveyance. In accordance with the above, the packaging film 65 cut into a predetermined length is supplied to the lower position of the packaging section S.

The present embodiment is particularly an improvement of the article cradle device 2, which will be described in detail below. As shown in FIG. 1, the raising and lowering rod 7 is configured to be raised and lowered via a cam mechanism 9 and a link mechanism 10 by the rotation of a motor 8. A support bracket 11 as a support member is attached to the upper end of the elevating rod 7.

As shown in FIGS. 3 and 4, a support plate 11a is attached to the upper end of the bracket 11 so as to extend in the left-right direction, and a plurality of first support shafts 12 are attached to the support plate 11a in a horizontal plane. They are inserted so as to extend in the front-rear direction and are arranged in parallel in the left-right direction in parallel with each other. A fixed mounting member 13 is attached and arranged on each of the support shafts 12.

Below the first support shaft 12, the bracket 1
1, a plurality of second support shafts 14 are attached so as to extend in the front-rear direction in a horizontal plane, and are arranged in parallel in the left-right direction,
Moreover, it is in a state parallel to the first support shaft 12. Each support shaft 14 has a quadrangular cross section, and is fitted into a guide hole 16 in a slider 15. Therefore, each slider 15 does not rotate around the axis C of the support shaft 14. The slider 1
The rotation preventing means 5 can be modified in various ways other than specifying the sectional shape of the support shaft 14.

A movable mounting member 17 is attached to each slider 15 and stands upright. Long holes 18 are formed on both the left and right sides of the support shaft 14 so as to extend in the front-rear direction, and a connecting pin 19 inserted into both the long holes 18 and the hollow portion 14a in the support shaft 14 is provided outside the support shaft 14 as a slider. It is attached to 15. The wire connecting portion 20 is attached to the connecting pin 19 in the hollow portion 14a of the support shaft 14. The wire 21 as an interlocking rope is inserted into the hollow portion 14a of the support shaft 14 and fixed to the wire connecting portion 20. This wire 21 is the spindle 1
It is pulled out from the hollow portion 14a of No. 4 toward the front of the bracket 11 and wound around the pulley 22 on the bracket 11. One end of the wire tube 23 is attached to the bracket 11, and the wire 21 is inserted into the wire tube 23. A compression coil spring 24 as an elastic body is wound around the outer circumference of the wire 21 in the hollow portion 14a of the support shaft 14, and the compression coil spring 24 is connected to the bracket 11 and the wire connecting portion 2.
It is supported between 0. Therefore, the elastic force of the compression coil spring 24 urges the slider 15 in the direction away from the bracket 11 along the axis C of the support shaft 14.

The fixed mounting member 13 and the movable mounting member 1
In FIG. 7, the arm portion 25 is positioned on the support shaft 12 and the slider 15, and the mounting table 26 is rotatably supported on the upper end portion of the arm portion 25. The mounting table 26 stands still by the elastic force of the spring 27, and the mounting surface 26 at the upper end of the mounting table 26 stands.
a is held on the substantially same plane along the article supply direction R. Further, each mounting table 26 can be tilted in both front, rear, left and right directions or in any one of the directions against the elastic force of the spring 27.

Regarding the support means for each fixed mounting member 13, as shown in FIG. 12, one base 11b is fixed on the support bracket 11, and each fixed mounting member is mounted on this base 11b. You may arrange 13 together.

As shown in FIG. 1, the other end of the wire tube 23 is introduced into a case 28 on the rear side of the machine frame 6. As shown in FIG. 5, a winding drum 30 is attached on a rotating shaft 29 in the case 28, and an end of the wire 21 pulled out from the wire tube 23 is connected to the winding drum 30. This case 2
A motor 31 is installed in the gear 8, and the rotation of the motor 31 causes the gears 31, 3 to rotate.
3 is transmitted to the rotary shaft 29.
A potentiometer 34 is mounted in the case 28,
The rotation of the rotary shaft 29 is transmitted to the potentiometer 34 via gears 35 and 36. The wire 21 has a length such that the placing members 13, 1 of the article receiving device 2 are
It is arranged so as not to be affected by the lifting and lowering of 7.

When the winding drum 30 rotates to wind up each wire 21, the slider 15 is pulled toward the bracket 11 side against the elastic force of the compression coil spring 24.
As shown in FIGS. 6 and 7, each movable mounting member 17 approaches each fixed mounting member 13. When the winding drum 30 rotates in the reverse direction and each wire 21 is pulled out from the winding drum 30 by the elastic force of the compression coil spring 24, the slider 15 moves to the rear of the bracket 11, as shown in FIGS. Then, each movable mounting member 17 separates from each fixed mounting member 13.

Next, the film folding device 4 shown in FIGS. 8 to 10 will be outlined. Guide rails 38 extend in the front-rear direction on both left and right sides of the front folding member 37 at the fixed position, and a rear folding member 39 is supported between the guide rails 38 so as to be movable in the front-rear direction. A movable member 41 is provided on each of the left and right sides of the guide plate 40 at the fixed position behind the rear folding member 39.
Is movably supported in the left-right direction, and the left and right movable bodies 4 are
Left and right folding members 42 are rotatably supported on the shaft 1 in the left-right direction about a shaft 42a, and the left and right folding members 42 extend forward from the movable body 41. L-shaped support arms 43 are attached to the left and right movable bodies 41, and the support arms 43 extend from the movable bodies 41 to the outside of the left and right guide rails 38, and the outside of the attachment plate portions 44. The guide plate portion 45 extends forward from the end portion. The left and right guide plate portions 45 are mounted on the mounting plates 46 attached to the left and right sides of the front folding member 37.
The front end portion 45a is mounted. A long hole 47 extends in the front-rear direction in the guide plate portion 45. A pair of front and rear slide shafts 49, 50 are attached to the L-shaped interlocking plate 48,
Both shafts 49 and 50 are engaged with the long hole 47 of the guide plate portion 45 and can move in the front-rear direction along with the interlocking plate 48 along the long hole 47. A long hole 52 is extended in the left-right direction in the interlocking plate portion 51 extending from both left and right sides of the rear folding member 39, and the slide shaft 49 on the front side is inserted into the long hole 52 to extend along the same long hole 52. And can move in the left-right direction together with the interlocking plate 48.

Left and right folding members 4 with respect to the rear folding member 39
In the interlocking mechanism of No. 2, the guide holes 53 are formed in the left and right folding members 42 so as to extend along the extending direction of the folding members 42, and the guide pins 5 are formed on the interlocking plate 48.
4 is attached, and the guide pin 54 is engaged with the guide hole 53 so that it can be moved.

In addition, in the position adjusting means for the left and right movable bodies 41, the link 5 is provided between both ends of the lever 56 that rotates together with the bevel gear 55 and the left and right movable bodies 41.
7, 58 are rotatably supported, the rotation of the motor 59 is transmitted to the lever 56 via the bevel gears 60, 55, and the rotation of the lever 56 is transmitted to the potentiometer 62 via the bevel gears 55, 61. It has become so.

As shown in FIG. 11, the article supply device 1
Photoelectric switch 1a, potentiometer 34 of article receiving device 2 and potentiometer 62 of film folding device 4
And are connected to a controller 63 as a control means. The photoelectric switch 1a detects the article 64 during transportation before reaching the packaging section S, and the article detection time is input to the controller 63. Based on this detection time, the controller 63 calculates the width W of the article 64 along the article supply direction R.

Further, the potentiometer 34 detects the position of the movable mounting member 17 based on the reference position, for example, the drum rotation amount (wire winding amount) corresponding to the distance L of the movable mounting member 17 with respect to the bracket 11. There is. The controller 63 stores the set distance L for each article width W. Then, the controller 63 selects the preset distance L stored in advance corresponding to the actual article width W calculated based on the input signal from the photoelectric switch 1a, and the actual detection distance L becomes the preset distance L. When they match, the motors 31 and 59 are stopped. The input signal regarding the position of the rotation center shaft 42a of the left and right folding members 42 detected by the potentiometer 62 and the article width W
The controller 63 controls the motor 59 on the basis of the input signal relating to the article length in the direction orthogonal to.

Next, the operation of the packaging machine thus constructed will be described. In the article supply device 1, the photoelectric switch 1a
When the article 64 is detected by, the controller 63 calculates the article width W. The motor 31 in the article receiving device 2
Thus, when the winding drum 30 rotates, the movable mounting member 17 moves in the front-rear direction along the support shaft 14 by the wire 21 and the compression coil spring 24. The potentiometer 34 detects the position of the movable mounting member 17. Controller 6
3 stops the motor 31 based on the article width W calculated based on the detection signal from the photoelectric switch 1a and the detection signal from the potentiometer 34. Therefore, as shown in FIGS. 3 and 4, in the article 64 having a large width W, the distance L of the movable mounting member 17 with respect to the bracket 11 becomes large, and the movable mounting member 17 moves rearward with respect to the fixed mounting member 13, An article 6 having a small width W as shown in FIGS. 6 and 7.
In 4, the distance L becomes small and the movable mounting member 17 approaches the fixed mounting member 13.

On the other hand, also in the film folding device 4, when the left and right movable bodies 41 approach and separate from each other based on the article length and the distance M between the rotation center shafts 42a of the left and right folding members 42 changes, the left and right folding members are also changed. 42, the L-shaped support arm 43, and the interlocking plate 48 are integrally moved to the left and right with respect to the rear folding member 39, and the interval between the left and right folding members 42 is adjusted. Therefore, the left and right folding members 42 are separated from each other in the long article 64 as shown in FIG. 8 and the double folding members 42 are close to each other in the short article 64.

When the article 64 conveyed from the article supply apparatus 1 is placed on the respective placing members 13 and 17 of the article receiving apparatus 2, the article 64 is placed on the front side of the article 6 as shown in FIG.
6 and stop. Then, the article 64 is placed and supported on each of the placement surfaces 26a as shown in FIGS. Incidentally, the reference position Q of the article 64 in the packaging section S is the front end side of the article 64 that abuts against this stopper, and the article width W changes rearward with reference to this position Q.

Next, the article 64 ascends to the wrapping section S together with the article cradle device 2 and is fed by the film supply device 3 to the wrapping section S.
The wrapping film 65 stretched on is lifted. In this state, when the rear folding member 39 approaches the front folding member 37 and the left and right folding members 42 close each other in the film folding device 4, the packaging film 65 is folded from the three sides below the article 64. After the folding, the article carrying-out device 5 carries the article 6
When 4 is pushed out in the carry-out direction P, the final folding by the front folding member 32 is performed on the lower side of the article 64.

The present embodiment has the following features in the article receiving apparatus 2. (B) The movable mounting member 17 can change the longitudinal distance N of the film conveying device 3 according to the film width with respect to the fixed mounting member 13 and can be arbitrarily positioned according to the article width W, and the front and rear end portions on the lower surface of the article 64 can be positioned. Since it is possible to reliably hold the article 64, it is possible to hold the article 64 with good stability, and it is also possible to deal with it by disposing only the mounting members 13 and 17 that hold at least the front and rear ends thereof. It is not necessary to provide a large number of mounting members in consideration of plural kinds of article sizes.

(B) The movable mounting member 17 moves in parallel with the fixed mounting member 13 on the support shaft 14 to move the mounting table 26.
Since the mounting surfaces 26a of the above are separated from each other in substantially the same plane, the movable mounting member 17 does not retreat to the lower side of the article 64 unlike the case of the prior art, and the moving space of the movable mounting member 17 is reduced. The movable mounting member 17 is effectively used as a support for the article 64 according to the article width W, and the article 64 is stably held by the respective mounting members 13 and 17.

(C) In the above-described embodiment, the wire 21 as the interlocking rope and the compression coil spring 24 as the elastic body are used as the movable means for moving the movable mounting member 17 on the support shaft 14. The wire operation means for winding the wire 21 around the winding drum 30 rotated by the motor 31 can be remotely controlled. Therefore, it is not necessary to install the motor 31 and the winding drum 30 in a narrow space near the mounting table 26 of the vertically moving article receiving apparatus 2. Here, the interlocking rope refers to a wire material having flexibility and little stretchability, and includes, for example, a tether.

(D) Support shaft 1 on which the movable mounting member 17 moves
4 is provided with a hollow portion 14a, the wire 21 is inserted into the hollow portion 14a to be connected to the movable mounting member 17, and the hollow portion 14a is provided with a compression coil spring 24. The structure can be simplified by effectively utilizing the hollow portion 14a in the inside 14.

(E) Reference position Q which is the front end side of the article 64
Since the fixed placing member 13 is provided on the side, and the movable placing member 17 is moved with respect to the fixed placing member 13 in accordance with the article width W, the fixed placing member 13 at a fixed position can move the article 64. The front lower side of the article 64 can be reliably supported, and the rear lower side of the article 64 can be stably supported by the movable mounting member 17 whose movement is adjusted according to the article width W.

Besides the above-described embodiment, the following configuration may be adopted. (A) In the above-described embodiment, the movable mounting member 1 is movable on the support shaft 14.
Although the wire 21 and the compression coil spring 24 are used as the moving means for moving the 7, the screw mechanism in which the male screw on the support shaft 14 side and the female screw on the movable mounting member 17 side are screwed together is used. In this case, the spindle 14 is rotated by a motor, and the motor is drive-controlled in accordance with the article width W.

(B) In the above-described embodiment, the winding drum 30 rotated by the motor 31 is used as a means for operating the wire 21, but the winding drum 30 is manually rotated instead of the motor 31.

(C) In the above-described embodiment, the article width W is automatically detected by the photoelectric switch 1a as the article width detection means while the article 64 is being conveyed by the article supply device 2. Then, the operator inputs the article width W and other data necessary for positioning the movable mounting member 17 into the controller 63.

(D) Article supply device 1 in the above embodiment
Instead of the photoelectric switch 1a, another detection means, for example, a contact sensor, a magnetic sensor, an ultrasonic sensor, or the like is used. Further, instead of the potentiometer 34 of the article receiving device 2, a palace transmitter such as an encoder or other position detecting sensor is used.

(E) Movable mounting member 17 according to the article width W
To adjust the positioning step by step. In addition, the movable mounting member 17
The set distance L is not set based on the dimension stored in the controller 63, but is set according to the value calculated based on the detected article width W.

(F) It is possible to adjust the positions of all the placing members in the article receiving device 2. (G) In the article cradle device 2, the support plate 11a supports a plurality of movable bodies which are movable in the left-right direction, and the support shafts 12 and 14 are attached to the movable bodies. Therefore, not only the space in the front-rear direction but also the space in the left-right direction can be adjusted between the mounting members 13 and 17.

[0046]

[Effects of the Invention] Article stand 2 for the packaging machine according to the present invention
According to the above, by the predetermined movement adjustment of the movable mounting member 17,
It is possible to change the front-rear spacing N of the film transporting device 3 according to the film width and to perform arbitrary positioning according to the article size, so that the article 64 can always be stably held.

Further, since the interlocking rope 21 can be remotely operated, it is not necessary to install the interlocking rope operating means in a narrow space near each article placing table 26. Further, the movable mounting member 17 can be automatically adjusted to the optimum position according to the article width W.

[Brief description of drawings]

FIG. 1 is a schematic side view of a stretch film packaging machine according to this embodiment.

FIG. 2 is a schematic plan view of the same.

FIG. 3A is a partially cutaway side view showing a state in which an article having a large width is set on the article receiving apparatus according to the present embodiment, and FIG. 3B is an X side view of FIG. It is a X-ray sectional view.

FIG. 4 is a plan view of FIG.

5 is a partial side view showing means for remotely operating the wire shown in FIG. 3 (a).

FIG. 6 is a partially cutaway side view showing a state in which an article having a small width is set to be placed on the article receiving apparatus according to the present embodiment.

FIG. 7 is a plan view of FIG.

FIG. 8 is a partial plan view showing a state in which the film folding apparatus according to the present embodiment is set so that a packaging film can be folded into an article having a large width.

FIG. 9 is a partial plan view showing a state in which the film folding apparatus is set so that the packaging film can be folded into an article having a small width.

10 is an enlarged cross-sectional view taken along line YY of FIG.

FIG. 11 is an electric block circuit diagram for adjusting the article cradle device and the film folding device according to the present embodiment according to the article width.

FIG. 12 is a partially cutaway side view showing an article cradle device according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Article supply device, 1a ... Photoelectric switch, 2 ... Article receiving device, 3 ... Film conveying device, 4 ... Film folding device, 5 ... Article unloading device, 11 ... Support bracket as a supporting member, 12 ... Spindle , 13 ... Fixed mounting member, 14 ... Spindle, 14a ... Hollow part, 15 ... Slider, 17 ... Movable mounting member, 21 ... Wire as interlocking rope, 24 ... Compression coil spring as elastic body, 26 ... Table, 26a ... Article mounting surface, 30 ... Winding drum, 31 ... Motor, 34 ... Potentiometer, 63 ... Controller as control means, 64
... article, 65 ... wrapping film, S ... wrapping section, W ... article width, R ... article feeding direction.

Claims (3)

[Claims] 1. A film transport device (3) for transporting a packaging film (65) to a packaging section (S), and an article cradle device (2) which moves up and down with respect to the packaging section (S).
The article supply device (1) for conveying the article (64) to the article receiving device (2), and the packaging film (65) of the packaging unit (S) including the article (64) on the receiving device (2). ) In a state in which the wrapping film (65) is folded onto the article (64) in a state of being lifted, the stretch film wrapping machine is provided with the article cradle device (2). A part or all of the mounting members (13, 17) arranged on the support member (11) are provided along the axis (C) of the support shaft (14) extending from the support member (11). And movably support the article placement surface (26) on each placement member (13, 17).
An article cradle size adjusting device in a stretch film packaging machine, comprising movable means (21, 24) capable of changing the relative position of a) on substantially the same plane along the article supply direction (R). 2. The movable means according to claim 1 is a support shaft (1
4) an elastic body (24) for urging the movable mounting member (17) on the axis (C) direction, and the movable mounting member (17).
The interlocking rope (21) connected to the
Item 1) is an article receiving device for a stretch film wrapping machine, characterized in that interlocking rope operation means (30, 31) for moving the movable mounting member (17) is linked to the elastic force of the elastic body (24). Stand size adjustment device. 3. The interlocking rope operating means according to claim 2 comprises interlocking rope winding means (30) and drive means (31) for rotating the winding means (30), and the article supply direction (R). Control means (63) for controlling rotation of the drive means (31) so as to set the position of the movable mounting member (17) based on the width (W) of the article (64) along the line. An equipment cradle size adjustment device for stretch film packaging machines.