JPS6246403B2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Field of Application) The present invention provides, for example, a packaging machine for fruits and vegetables.
This invention relates to a conveying device for conveying a band-shaped packaging film to the packaging section of the same machine.

(Prior Art and Problems to be Solved by the Invention) It is well known that in a packaging section, both ends of a packaging film in the width direction are conveyed by being sandwiched between a pair of upper and lower belts on both sides of the packaging section. However, since both the upper and lower belts tend to vibrate and separate in the vertical direction, both ends of the packaging film sometimes fall off or slip inward from the belt, causing wrinkles in the packaging film.

The present invention has been made to solve this drawback, and its purpose is to arrange a plurality of round belts, which are vertically opposed and spanned over each other, alternately lining up at least one belt at a time, and packaging the round belts. It is an object of the present invention to provide a conveyance device that can prevent both ends of a film (transport material) from falling off or shifting by meandering them up and down so that they can be inserted.

Effects of the Invention (Means for Solving the Problems) That is, as shown in the drawings of the embodiments described later, the present invention has two shafts 3 and 4 installed at both ends of a pair of upper and lower shafts 3 and 4 respectively installed on both sides of the fixed frame 2. A plurality of endless round belts 15, 16, 30, 31 are placed vertically opposite each other between the supported rollers 7, 8, 26, 28, and the endless round belt 1
Running parts 15a, 3 which are the lower side of the round belts 15, 30 arranged on the upper side among 5, 16, 30, 31
Round belt 16, 3 placed on the lower side like 0a
At least one running section 16a, 31a on the upper side of 1 is arranged alternately to form a belt row M, and both ends of the conveyed material can be inserted into this belt row M by meandering up and down. It is something.

(Function) In the present invention configured as described above, the running portions 15a, 30a, which are the lower sides of the round belts 15, 30 disposed on the upper side of the endless round belts 15, 16, 30, 31, , the running section 1 is located above the round belts 16 and 31 which are also arranged on the lower side.
6a and 31a are arranged alternately one by one to form a belt row M, and both ends of the conveyed material are inserted into this belt row M in a vertical meandering manner, so that both ends are always reliably aligned. be held in place. Therefore, the conveyed material is prevented from falling off or shifting.

(Example) Below, we will explain the case where the conveying device according to the present invention is used in a packaging machine for fruits and vegetables.
is a packaging film conveying device placed on the top of the machine, and as shown in Figures 1 and 2, there are three sets of shafts, one pair at the top and one at the left and right sides between the front and rear fixed frames 2. 3, 4, 5 and one shaft 6 are respectively installed in parallel, and among them, the innermost shaft 3 and the outermost shaft 5, 6 are fixed to the fixed frame 2, and the other shaft 4 is fixed to the fixed frame. It is made rotatable relative to 2. 7
8 is a pair of upper and lower rollers fixed to the rear end of the shaft 4 in correspondence with the roller 7; 9 is the shaft; A pair of upper and lower rollers rotatably supported across the entire front and rear ends of 5; a pair of upper and lower endless chains 10 spanned between the rear end of the roller 9 and the rear end of the roller 8; 11 is a roller rotatably supported over the entire front and rear ends of the shaft 6; 12 is a roller mounted between the front end of the roller 11 and the front end of the lower roller 9 of the pair of upper and lower rollers 9; It's the endless round belt I gave you.
Reference numeral 13 denotes a pair of upper and lower shafts fixed to the rear fixed frame 2 inside the left and right shafts 3, and 14 denotes a pair of upper and lower rollers rotatably supported on the tip of the same shaft 13. It extends to the middle of 7.

Reference numeral 15 denotes the upper left and right rollers 7, 8, of the pair of upper and lower rollers 7, 8, 14 on both sides of the fixed frame 2;
Three endless round belts spanning between 14 and 16
are four endless round belts that are stretched between the left and right rollers 7, 8, and 14 on the lower side facing the round belt 15, and as shown in FIG. The lower running part 15a of the round belt 15 is interposed between the upper running parts 16a, and the running parts 15a and 16a are alternately arranged one by one to form seven belt rows M. Note that the intervals between the five belts on the inner side of the same belt row M are narrow. 17 is the upper and lower round belt 15,1
Five endless round belts are stretched between the left and right rollers 7 and 8 on the upper and lower sides in front of roller 6.

Reference numeral 18 denotes a pair of left and right shafts fixed to the fixed frame 2 on the rear side inside the left and right shafts 13, respectively; 19;
20 is a lever member rotatably supported on the tip of the coaxial shaft 18, and 20 is one arm portion 19 of both lever members 19.
22 is a torsion coil spring wound around the shaft 18, and one end thereof is connected to the other arm of both lever members 19. 19b and always urges the rear presser member 20 downward. The rear holding member 20 can be moved upward by moving one arm 19b of the lever member 19 downward against the bias of the torsion coil spring 22.

As shown in FIG. 3, the lower running portions of the inner three round belts 16 of the inner round belts 16 are inserted into the rear presser member 20, and the rear presser member 20 is
The upper pressing portion 20a is interposed between the upper and lower running portions of the circular belt 16. Note that this pressing part 2
The upper surface of Oa corresponds to the inner five of the belt rows M. Further, a stopper protrusion 20b is provided upright on the inner edge of the pressing portion 20a. 23 is a pressure receiving plate extending from the rear fixed frame 2 in correspondence with the presser member 20, and as shown in FIG.
Interposed between the upper and lower running parts of the round belt 15,
The tip extending further inward from there is bent obliquely upward.

Reference numeral 24 denotes a movable frame connected by a pair of upper and lower shafts 25 on both the left and right sides, and the left and right sides of the frame 24 are inserted into the front end sides of the left and right shafts 3 and 4 so as to be movable in the axial direction thereof. 26 is the moving frame 24
A pair of upper and lower rollers rotatably supported on a shaft 4 between them, as shown in FIG.
The roller 26
The roller 26 can be fixed to the shaft 4 by engaging a set screw 27 screwed in from the outer peripheral surface of the shaft 4. In addition, as shown by the imaginary line in FIG.
It is possible to move only within the range of a. 28 is a pair of upper and lower rollers rotatably supported on the shaft 3 between the movable frames 24, and 29 is a pair of upper and lower rollers rotatably supported on the shaft 25.

Reference numeral 30 denotes the upper and lower rollers 2 of the pair of upper and lower rollers 26, 28, 29 on both sides of the moving frame 24.
Six endless round belts are stretched between 6, 28, and 29, and 31 is the lower left and right rollers 26, 2.
These are five endless round belts that are stretched between 8 and 29 facing the round belt 30, and as shown in FIG. A running part 31a on the upper side of the round belt 31 is interposed, and both running parts 30a, 31a and 1
The books are arranged alternately, forming 11 belt rows M. Note that the intervals between the five belts on the inner side of the same belt row M are narrow.

Reference numeral 32 in FIGS. 2 and 3 denotes a shaft fixed inside the shaft 25 on both left and right sides of the movable frame 24, and at its rear end is the lever member 19 on the fixed frame 2 side, and its arm portion. 19a, 19b, rear holding member 20, its pressing portion 20a and stopper protrusion 20
b, a lever member 33 corresponding to the pin 21, the torsion coil spring 22, and the pressure receiving plate 23, its arm portions 33a, 33b, the front presser member 34, and its pressing portion 3;
4a, a stopper protrusion 34b, a pin 35, a torsion coil spring 36, and a pressure receiving plate 37 are similarly provided. Reference numeral 38 is an operation bar extending from both left and right sides of the movable frame 24 to the outside through the fixed frame 2 on the rear side, and by operating this bar, the movable frame 24 can be adjusted to move in the axial direction of the shafts 3 and 4. It is said that

Reference numeral 39 in FIG. 2 denotes left and right press members provided between the left and right ends of the front and rear press members 34 and 20, which are similarly movable up and down. It forms S.
Reference numeral 40 in FIGS. 1 and 2 is a saw blade provided between both rollers 9 and 11 on both sides of the fixed frame 2, and is movable upward and downward.

For the conveyance device 1 configured as described above, a pair of upper and lower winding rolls 4 are provided on both the left and right sides of the machine base.
A case where a packaging film F having a width dimension L1 is supplied from one of them will be explained. In this case, the position of the movable frame 24 is adjusted in advance by operating the operation bar 38 to match the width L1 of the packaging film F. As shown in FIGS. 1 and 2, the packaging film F is guided onto the roller 11 of the conveying device 1 via the roller 42, and then passed between the rollers 9 and the upper round belt 15, 17, 30.
and the lower round belts 16, 17, and 31. That is, as shown in FIG.
a and the running parts 16a, 31a above the lower round belts 16, 31, the running parts 16a, 30a in the first row from the inside, and the running parts 15a, 31a in the second row from the inside. Under the 3rd row running section 16
Both ends of the packaging film F are inserted in a meandering manner up and down alternately onto the layers a and 30a.

Next, an outline of the actual packaging operation will be explained. When both the upper and lower shafts 4 on the supply side of the conveying device 1 are driven and rotated, the packaging film F is conveyed toward the packaging section S, and the saw blade 40 is moved upward every fixed length L2 of the packaging film F. Perforations are formed in the packaging film F in the width direction. Since the circumferential speed of the rollers 8 and 26 on the shaft 4 is higher than the circumferential speed of the roller 9 on the shaft 5, the packaging film F is pulled and cut at the perforations, as shown by the imaginary line in FIG. As shown, the package is transported to the top of the packaging section S. In synchronization with this packaging film transport operation, as shown in FIG.
It is horizontally fed to the side and placed on the pedestal 44.

The packaging film F on the packaging section S is clamped by the front, rear, left, and right press members 34, 20, and 39 moving upward. That is, in the front and rear pressing members 34, 20, as shown in FIGS. 5 and 6, between the pressing parts 34a, 20a and the pressure receiving plates 37, 23, there are A packaging film F is held between the running parts. Further, the left and right pressing members 39 directly clamp the packaging film F.

From this packaging film set state, the pedestal 44
When the product W is pushed up to the packaging position as shown by the imaginary line in FIG. 1, the packaging film F is folded under the product W, although not shown. The wrapped item W is carried forward, and the next step of packaging is performed in the same way.

When pushing up the item W, the packaging film F
Since the belt row M is stretched upward, the belt row M tends to be bent inwardly, but this is prevented by the front and rear pressing members 3.
This is prevented by the stopper protrusions 34b and 20b of 4 and 20.

Although not shown, the following configuration may be used.

(a) The rollers 7, 8 that bridge the round belts 15, 16, 17 should also be supported so as to be movable in the axial direction of the shafts 3, 4.

(b) In the belt row M, the upper round belt 15,
Running parts 15a, 30a on the lower side of 30 and running part 16 on the upper side of the lower round belts 16, 31
A and 31a are arranged alternately in pairs.

Effects of the Invention As described in detail above, in the conveying device of the present invention, both rollers 7, 8, 26, 28 are supported at both ends of the pair of upper and lower shafts 3, 4 respectively installed on both sides of the fixed frame 2. A plurality of endless round belts 15, 16, 30, 31 are vertically opposed and spanned between the endless belts 15, 1.
6, 30, 31, the running portions 15a, 30a are the lower side of the round belts 15, 30 arranged on the upper side, and the running portions 16a, 31a are the upper side of the round belts 16, 31 arranged on the lower side. at least 1
The belt row M is formed by arranging books alternately, and both ends of the conveyed material can be inserted into the belt row M by meandering up and down, so even if the upper and lower round belts move vertically. Both ends of the packaging film used as a conveying material can be held securely at all times, which has the effect of preventing it from falling off or shifting.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a fruit and vegetable packaging container using the conveyance device according to the present invention, FIG. 2 is a schematic plan view of the conveyance device according to the present invention, and FIG. 3 is taken along the line XX in FIG.
FIG. 4 is a partially enlarged plan view showing the rollers in the moving frame, and FIGS. 5 and 6 are partially enlarged sectional views showing the state of clamping by the front and rear pressing members. Conveyance device...1, Fixed frame...2, Axis...3,
4, Roller...7, 8, 26, 28, Round belt...
...15, 16, 30, 31, holding member...20,
34, 39, Moving frame...24, Belt row...M,
Packaging department...S, Goods...W, Packaging film...
F.

Claims (1)

[Scope of Claims] 1. A plurality of endless round belts are connected between rollers 7, 8, 26, 28 supported at both ends of a pair of upper and lower shafts 3, 4 respectively installed on both sides of fixed frame 2. 15, 16, 30, and 31 are arranged vertically facing each other, and the endless round belts 15, 1
6, 30, 31, the running portions 15a, 30a are the lower side of the round belts 15, 30 arranged on the upper side, and the running portions 16a, 31a are the upper side of the round belts 16, 31 arranged on the lower side. at least 1
A conveyance device for packaging films, etc., characterized in that the books are alternately arranged to form a belt row M, and both ends of the conveyed material can be inserted into the belt row M by meandering them up and down. 2. The conveying device for packaging films and the like as set forth in claim 1, wherein the inner several of the belt rows M have narrower intervals.