JPS6366737B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides, for example, a packaging machine for fruits and vegetables.
This invention relates to a conveying device for spreading a band-shaped packaging film to the packaging section of the machine.

It is well known that a band-shaped packaging film is conveyed from the film supply openings of the upper and lower belts to the packaging unit by sandwiching both edges in the width direction between a pair of upper and lower endless belts on both sides of the packaging unit. In the preparation stage of the packaging operation, the packaging film is set by inserting the starting end of the packaging film into the film supply openings of both the upper and lower belts and feeding out the packaging film a little.

The present invention enables both ends of the conveyed material to meander up and down so that it can be inserted, so that both ends of the conveyed material can always be reliably clamped and conveyed, and the film supply ports of both the upper and lower belts are The purpose is to make it easier to set the packaging film (carrying material) by configuring it so that it can be opened and closed.

Hereinafter, the case where the conveying device according to the present invention is used in a packaging machine for fruits and vegetables will be explained. In the figure, 1 is a packaging film conveying device installed on the upper part of the machine, and as shown in FIGS. 1 and 2, Both front and rear fixed frames 2
On the left side of the gap, two roller shafts 3 and 4 are rotatably installed from the outside, and a shaft 5, a pair of upper and lower shafts 6 and 7, and a pair of upper and lower shafts 8 and 9 are fixed, while on the right side there are A pair of shafts 10 and 11 are fixed.
A pair of opening/closing frames 12 are rotatably supported in the vertical direction on both the front and rear ends of the shaft 6, and extend from the same shaft 6 to an upper midpoint between the roller shafts 3 and 4.
A support frame 13 having a handle 14 is fixed between the distal ends of both opening/closing frames 12, and a pair of roller shafts 15 and 17 are rotatably installed on the base end side of the support frame 13, and a shaft 16 is fixed.

In FIG. 2, 18 is the pair of upper and lower shafts 1.
A pair of upper and lower rollers 19 are rotatably supported on the front ends of the pair of upper and lower shafts 6 and 7; Five endless round belts 20 are strung across the rear side between 18 and 19 so as to be vertically opposed to each other. Reference numeral 21 denotes a pair of upper and lower rollers rotatably supported on the front ends of the pair of upper and lower shafts 10 and 11, and between the upper roller 21 and the front side of the upper roller 18, the upper roller 21 is rotatably supported. Three endless round belts 22 are spanned through the rollers 19, and four
The endless round belt 23 of the book is spanned, and as shown in FIG.
The lower running portion 22 of the upper round belt 22 between a
Seven belt rows M are formed by alternately arranging both the running portions 22a and 23a, one by one, with the belt a interposed therebetween. 24 is a pair of upper and lower rollers rotatably supported on the front ends of the pair of upper and lower shafts 8 and 9;
is a pair of upper and lower rollers rotatably supported with respect to the fixed frame 2 inside the roller 21,
Both the upper and lower round belts 2 are rotated by both rollers 24 and 25.
It makes 2, 23 nervous. Note that the upper round belts 20 and 22 are also kept under tension by the roller shaft 17.

Reference numeral 26 denotes a cylindrical front holding member supported vertically movably with respect to the front fixed frame 2, and as shown in FIG.
The lower running portion of the round belt 23 is inserted, and the pressing portion 26a is interposed between the upper and lower running portions of the round belt 23. Note that the pressing portions 26a correspond to the inner five belts of the belt row M. A pressure receiving plate 27 extends from the fixed frame 2 in correspondence with the presser member 26, and is interposed between the upper and lower running portions of the upper round belt 22, as shown in FIG.

Reference numeral 28 denotes a movable frame that is inserted through the lower shafts 5, 7, 9, and 11 so as to be movable in the axial direction thereof, and an operating lever 29 that extends outward from both left and right sides of the lower shaft through the front fixed frame 2. The movement of the upper shafts 16, 17, 6, 8, 10 is adjustable by
is a notch 28 formed on the upper edge of this moving frame 28.
It is designed so that it can be wedged into a. 30 is the pair of upper and lower shafts 1 so as to be positioned within the moving frame 28.
A pair of upper and lower rollers are supported movably and rotatably in the axial direction relative to the shafts 6 and 5; 31 is a pair of upper and lower rollers similarly supported to the pair of upper and lower shafts 6 and 7; 32 is a pair of upper and lower rollers A pair of shafts 10, 11
These rollers 30, 31, and 32 are a pair of upper and lower rollers supported in the same way by the moving frame 28.
Since it is pushed by the moving frame 28 as the movement is adjusted, it moves in the axial direction following the moving frame 28.

Reference numeral 33 indicates five endless round belts extending between the upper rollers 30 and 32 via the upper roller 31; 34 indicates a belt extending between the lower rollers 30 and 32 via the lower roller 31; As shown in Figure 4, it is a six-strand endless round belt stretched over
The lower running portion 33a of the upper round belt 33 is interposed between the upper running portions 34a of the lower round belt 34, and the running portions 33a and 34a are alternately arranged one by one to form 11 belt rows. It is set as M. 35
are a pair of upper and lower rollers that are movably and rotatably supported in the axial direction of the pair of upper and lower shafts 8 and 9 so as to be positioned within the movable frame 28; The upper and lower round belts 33 and 34 are tensioned by a pair of upper and lower rollers 36 that move in the axial direction following the adjustment and are rotatably supported on the moving frame 28 inside the roller 32. Note that the upper round belt 33 is also kept under tension by the roller shaft 17.

Reference numeral 37 denotes a cylindrical rear presser member supported movably up and down with respect to the moving frame 28, and numeral 38 denotes a pressure receiving plate extending from the upper part of the movable frame 28 in correspondence with the rear presser member 37. Member 37 and pressure receiving plate 3
8 and the upper and lower round belts 33, 34 are the same as in the case of the front presser member 26.

Reference numeral 39 denotes a pair of pulleys supported at the rear ends of the roller shafts 3 and 4, and an endless round belt 40 is stretched between both pulleys 39. 41 in FIG. 2 is a gear fixed to both the upper and lower rollers 21;
42 is a gear fixed to both the upper and lower rollers 32 and movable in the axial direction together with the rollers 32, the driving rotation of the lower shaft 11 is transmitted to both the gears 41, 42, and the rollers 21, 32, round belt 2
Rotation is transmitted to each part via 2, 23, 33, 34, etc. Reference numeral 43 in FIG. 1 is a saw blade provided between both roller shafts 3 and 4 on the left side of the fixed frame 2, and is movable upward.

A case will be described in which a packaging film F is set from one of a pair of upper and lower take-up rolls 44 provided on the left side of the machine base in the conveyance device 1 configured as described above. In this case, the operation bar 29 is operated in advance to adjust the position of the moving frame 28 in accordance with the width dimension of the packaging film F. Then, as shown in FIG. 3, when the handle 14 is grasped and lifted upward, the opening/closing frame 12 rotates upward around the shaft 6, and the upper rollers 18 and 30 and the lower roller 1
8 and 30 are separated, and the film supply port P is opened. From this state, the starting end of the packaging film F on the take-up roll 44 is guided to the supply port P via both roller shafts 3, 4, and placed on the lower round belts 20, 23, 34. Next, when the opening/closing frame 12 is returned downward to bring the upper rollers 18, 30 and the lower rollers 18, 30 closer together and the film supply port P is closed, both ends of the packaging film F are as shown in FIG. As shown, lower running portions 22a, 33 of upper round belts 22, 33
a and the upper running part 23 of the lower round belts 23, 34
a, 34a, above the running parts 23a, 34a of the first row from the inside, below the running parts 22a, 33a of the second row, and running parts 23a, 3 of the third row from the inside.
They are inserted alternately onto the top of 4a, resulting in an up-and-down meandering state.

Next, an outline of the actual packaging operation will be explained. When the transport device 1 is driven, the starting end of the packaging film F located at the supply port P is transported toward the packaging section S at the center of the transport device 1. On the way, the saw blade 43 moves upward instantaneously to form perforations in the width direction at every fixed length of the packaging film F, and furthermore, an instantaneous brake is applied to the roller shaft 4, causing both the upper and lower shafts 15, 4 The packaging film F held between the packaging film F is pulled and is cut at the perforations by this tension, and is conveyed onto the packaging section S as shown by imaginary lines in FIG. In synchronization with this conveyance operation, the article W is supplied from the supply device 45 onto the pedestal 46 and placed on the pedestal 46, as shown in FIG.

As shown in FIGS. 5 and 6, the packaging film F on the packaging section S is moved upward by both the front and rear pressing members 26, 37, and the pressing parts 26a, 37a and the pressure receiving plate 2 are moved upwardly.
It is held between 7 and 38.

From this packaging film set state, the pedestal 46
is moved upward and the article W is pushed up to the packaging position as shown by the imaginary line in FIG. The folding operation is performed, and as shown in FIG.
Wrapped in packaging film F as F ₁ . The wrapped item W is transported forward, and the next step of packaging is performed in the same way.

The present invention described in detail above supports an opening/closing frame 12 at one end of a fixed frame 2 so as to be rotatable in the vertical direction, and rollers 12 are attached to both ends of a shaft 16 installed on this opening/closing frame 12.
8, 30 are provided, and rollers 18, 30 are also provided at both ends of the shaft 5, which is installed on the fixed frame 2 opposite to the shaft 16, and rollers 18, 30 are provided opposite to the rollers 18, 30, while the other end of the fixed frame 2 A pair of upper and lower shafts 10 and 11 installed on the side are provided with rollers 21 and 11 at both ends, respectively.
32, and endless belts 22, 23, 33, 34 are vertically opposed and spanned between the pair of upper and lower rollers 21, 32 and the pair of upper and lower rollers 18, 30. ，
18, 30, and 30 can be separated and approached by opening/closing operations of the opening/closing frame 12, and serve as a supply port P for conveyed materials. Therefore, the supply port P is widened by the opening/closing operation, which has the effect of making it easier to set the conveyed material in the supply port P.

Moreover, the belts 22, 23, 33, and 34 are multiple endless round belts, and the upper round belts 22, 3
The lower running parts 22a, 33a are below the belts 3, and the upper running parts 2 are above the lower round belts 23, 34.
3a and 34a are alternately arranged one by one to form a belt row M, and this belt row M
However, since both ends of the conveyed material can be inserted in a meandering manner, even if the upper and lower round belts 22, 23, 33,
Even if the packaging film 34 shakes vertically, both ends of the packaging film can always be securely clamped and conveyed, preventing it from falling off or shifting. It is very difficult to enter. According to the present invention, such a setting can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a schematic front view of a fruit and vegetable packaging machine using a conveyance device according to the present invention, FIG. 2 is a schematic plan view of a conveyance device according to the present invention, and FIG. 3 is a partially enlarged view showing the main parts of the present invention. The cross-sectional view, Figure 4, is taken from X- in Figure 2.
An X-ray schematic enlarged cross-sectional view, FIGS. 5 and 6 are partial cross-sectional views showing the clamped state by both the front and rear presser members,
FIG. 7 is a sectional view showing an article wrapped with a packaging film. Conveying device...1, Fixed frame...2, Axis...6, Opening/closing frame...12, Rollers...18, 21, 30, 3
2. Round belt...22, 23, 33, 34, Belt row...M, Supply port...P, Packaging section...S, Packaging film...F, Article...W, Upper running section...
23a, 34a, lower running part...22a, 33
a.

Claims (1)

[Claims] 1. An opening/closing frame 12 is supported at one end of the fixed frame 2 so as to be rotatable in the vertical direction, and rollers 18, 30 are provided at both ends of a shaft 16 installed on this opening/closing frame 12, and rollers 18, 30 are provided opposite to this shaft 16. Rollers 18, 30 are also provided at both ends of the shaft 5 installed on the fixed frame 2, facing the rollers 18, 30, and on the other hand, both ends of the pair of upper and lower shafts 10, 11 installed on the other end side of the fixed frame 2. rollers 21 and 32 are provided in each section, and the upper and lower pair of rollers 21 and 32 and the upper and lower pair of rollers 1
8, 30, endless round belts 22, 23, 3
3 and 34 are placed vertically facing each other, and the upper and lower pair of rollers 18, 18 and 30, 30 are separated and approached by opening and closing operations of the opening/closing frame 12, and serve as a supply port P for the conveyed material, and the endless round belt 2
2, 23, 33, and 34, the lower running part 22 is the lower side of the round belt 22, 33 arranged on the upper side.
Round belt 2 placed on the lower side like a and 33a
Upper running portions 23a, 34a above 3, 34
A packaging film, etc., characterized in that at least one of these is arranged alternately to form a belt row M, and both ends of a conveyed material can be inserted into the belt row M by meandering up and down. Conveyance device.