JP2000053224A - Interval adjustment method for pinch piece in front/rear of bottomed carton in linear conveyer of bottomed carton - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly, easily, and efficiently adjust the interval of pinch pieces of front/rear carriers according to the types of cartons. SOLUTION: In a device linearly conveying materials is so formed that same advancing sides of a pair of endless chain conveyers are arranged in parallel opposed to each other in a same plane, a bottom receiver rail 20 is installed between the endless chain conveyers, a set of front/rear carriers are attached to the respective endless chain conveyers opposed to each other in the carrying direction at a fixed interval, and respective corner parts of the bottomed carton 5 are pinched between the pinch pieces of the carriers, front side carriers 14A, 14B of the front side pinch pieces 13A, 13B pinching the front corner part of the bottomed carton 5 are attached to second endless chain conveyers 8A, 8B. The rear side carriers 7A, 7B of the rear side pinch pieces 6A, 6B for pinching the rear corner part of the bottomed carton 5 are attached to the first endless chain conveyers 1A, 1B. The first endless chain conveyers 1A, 1B and the second endless chain conveyers 8A, 8B are inversely advanced/retreated by the same length respectively so that the interval in the front/rear direction between the front side pinch pieces 13A, 13B and the rear side pinch pieces 6A, 6B are adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to juice, sake,
During a series of steps of filling a liquid content while forming from a flat plate into a cubic or rectangular container (hereinafter referred to as a carton) having a square cross section or a rectangular cross section based on paper, such as a liquid seasoning, The present invention relates to a method for adjusting the distance between front and rear holding pieces in order to hold a plurality of types of cartons having different dimensions in a straight-bottomed carton conveying device.

[0002]

2. Description of the Related Art With respect to the formation of a container, a paperboard substrate is first processed into a tube shape, and then a tube body inserted into the arm is stopped when the turret having a radial arm called a mandrel is intermittently rotated. The bottom of the carton is formed by performing a molding process, and the formed bottomed carton is extruded downward from the arm and passed onto a straight transport line.

[0003] In this linear conveyor, a pair of endless chain conveyors are arranged in parallel so that the same traveling sides thereof are opposed to each other on the same plane, a conveying rail is provided between the endless chain conveyors, and the endless chain conveyors correspond to each other. Then, a set of front and rear carriers is attached at regular intervals in the transport direction, and each corner of the bottomed carton is sandwiched by the carrier holding pieces to carry straight forward.

The endless chain conveyor on each side is constructed in two stages, upper and lower, and holding pieces of the carrier are attached to the front and rear corresponding to the opposed endless chain conveyor, and each holding piece can hold the four corners of the bottomed carton. The carrier is attached to the upper and lower endless chain conveyors.

The distance between the endless chain conveyors is set so that each holding piece can hold each corner of the bottomed carton, front and rear carriers are attached to each endless chain conveyor, and the endless chain conveyor is intermittently transferred from the mandrel. Depending on the bottomed carton, a set of four carriers in front and behind is installed at regular intervals.

[0006] With this straight-ahead transport device, when the bottomed carton on the transport rail is intermittently transported and stopped,
Each process such as filling of the content liquid, folding of the upper end opening, fusion sealing, etc. is performed, and each processing / filling device or the like is provided at a fixed position at the stop position.

[0007]

The distance between the pair of endless chain conveyors and the distance between a pair of front and rear carriers of the above-mentioned straight conveying device are determined by the size of the carton to be formed (in the plane, square or rectangular conveying direction). The width is set in accordance with the width and the front-back distance), and most of them are fixed as dedicated machines for cartons of a specific size.

[0008] Attempts have been made to provide devices that can accommodate several carton sizes. The width adjustment in this case can be coped with by making the supporting portion of the endless chain conveyor and the supporting column adjustable in the width direction, and can be made extremely easily technically.

On the other hand, the adjustment of the front-back distance of the carrier in the transport direction is not allowed to move the center position of the carton in relation to the processing / filling equipment. Therefore, it is considered that the position adjustment of all the carriers is necessary. is there.

However, it is impractical to adjust all the carriers individually in terms of efficiency, and a method of attaching a cover for adjusting the thickness to the holding piece of the carrier has been considered. It takes time to procure and replace.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for quickly, easily and efficiently adjusting the distance between the front and rear carriers corresponding to the carton.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a method of the present invention is to arrange a pair of endless chain conveyors on the same plane so as to face each other in parallel on the same plane, and have a bottom support between the endless chain conveyors. A rail is installed, a pair of carriers are attached to each endless chain conveyor in the conveying direction at regular intervals in the conveying direction, and each corner of the bottomed carton is conveyed straight by holding each corner of the bottomed carton with the carrier holding piece. ,
The front carrier of the front holding piece for holding the front corner of the bottomed carton and the rear carrier of the rear holding piece for holding the rear corner of the bottomed carton are mounted on separate endless chain conveyors. The distance between the front and rear holding pieces is adjusted by moving the conveyors in the opposite directions by the same length.

According to the method of the present invention, since the front carrier and the rear carrier are mounted on separate endless chain conveyors, both endless chain conveyors can be easily advanced and retracted in the opposite directions by the same length, whereby the front holding piece and It is possible to adjust the distance between the rear holding pieces in the front-rear direction.

Since the front holding piece and the rear holding piece advance and retreat in the same length and in opposite directions, the center position of the two pieces, that is, the center position of the carton to be held, does not change. It can correspond to the positional relationship with each processing function provided for the process.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a vertical sectional front view of an apparatus for carrying out the method of the present invention, FIG. 2 is a partial plan view of the same, FIG. 3 is a partial side view of the same, and FIG. 4 is a partial bottom view of a drive unit. This apparatus includes a pair of left and right first endless chain conveyors 1.
A and 1B are installed in parallel on the same plane with an interval,
The drive sprockets 2A, 2B are driven by the drive sources (such that the first endless chain conveyors 1A, 1B intermittently rotate from the base toward the distal end between the drive sprockets 2A, 2B and the tip sprocket (not shown) from the base toward the tip. (Not shown) and positively rotating.

The first endless chain conveyors 1A and 1B are installed at two intervals in the upper and lower stages, respectively. The drive-side sprockets 2A, 2B are provided with metal bearings 4A, 4B on the drive shafts 3A, 3B so as to rotate in the same manner as the drive shafts 3A, 3B.
Has been fixed through. A pair of rear holding pieces 6A, 6B having a flat L-shaped height for holding both rear corners of the carton 5 between the first endless chain conveyors 1A, 1B.
Are mounted on the upper and lower sides by rear carriers 7A and 7B, respectively, so that the opposite surfaces have a corresponding relationship.

Further, the first endless chain conveyor 1A, 1
B, a pair of left and right second endless chain conveyors 8A, 8B are provided between the upper and lower first endless chain conveyors 1A, 1B at upper and lower intervals in parallel on the same plane on the left and right. And the driving sprockets 9A and 9B
And a tip sprocket (not shown). The drive side sprockets 9A, 9B are connected to the first endless chain conveyor 1A so that the second endless chain conveyors 8A, 8B rotate the same as the first endless chain conveyors 1A, 1B.
A and 1B are connected to the driving sprockets 2A and 2B by tightening bolts 10A and 10B.

The insertion portions of the tightening bolts 10A and 10B are inserted into the driving sprockets 2A and 2B at the upper part of the first endless chain conveyors 1A and 1B, and the arc-shaped elongated holes 11A are formed concentrically with the driving sprockets 2A and 2B. 11B, a plurality of screw holes 12A are provided on the upper surfaces of the drive side sprockets 9A and 9B of the second endless chain conveyors 8A and 8B in positions corresponding to the long holes 11A and 11B and the screw holes 12A at positions opposed to the long holes 11A and 11B. 12B are provided. Therefore, if the fastening bolts 10A and 10B are removed, the drive sprockets 9A and 9B of the second endless chain conveyor become free from the drive shafts 3A and 3B.

Then, the second endless chain conveyor 8
Planes L holding front corners on both sides of carton 5 on A and 8B
A pair of front holding pieces 13A, 13B having the height of the mold are mounted on the upper and lower sides by front carriers 14A, 14B, respectively, so that they correspond to each other on the opposing surfaces. The rear holding pieces 6A and 6B and the front holding piece 13
A and 13B sandwich the four corners of the carton 5.

Flanges 15A and 15B are fixed to the lower portions of the drive shafts 3A and 3B.
5B and drive pulleys 16A, 16B rotatably inserted through the drive shafts 3A, 3B are connected by tightening bolts 17A, 17B.

A plurality of arc-shaped long holes 18A and 18B are provided on the edges of the flanges 15A and 15B on the edges of the flanges 15A and 15B, and a plurality of arc-shaped long holes 18A and 18B are provided in the insertion portions of the fastening bolts 17A and 17B. Corresponding flange 15
A and 15B, screw holes 19A and 1
9B is provided. Therefore, the tightening bolt 17
If A and 17B are removed, the drive shafts 3A and 3B are disconnected from the drive source (not shown). In the figure, reference numeral 20 denotes a bottom receiving rail of the carton 5 provided between the first endless chain conveyors 1A and 1B.

In the drawings, reference numerals 21A and 21B denote driving sprockets 2 on the upper portions of the first endless chain conveyors 1A and 1B.
A, 2B, two index pin holes provided at opposing positions sandwiching the centers of the two, and these index pin holes 21A, 21B
The index plungers 22A and 22B are inserted into one of them. Also, the second endless chain conveyors 8A and 8B
The index pin holes 23A and 23B are provided at positions corresponding to one of the index pin holes 21A and 21B on the upper surface of the drive side sprockets 9A and 9B, and the index pin holes are shifted from the other index pin holes 21A and 21B. 24A and 24B are provided.

Similarly, two index pin holes 25A and 25B are provided on the flanges 15A and 15B, respectively. The index pin holes 25A and 25B are provided on the lower surfaces of the drive pulleys 16A and 16B at positions corresponding to one of the index pin holes 25A and 25B. 26A and 26B are provided, and index pin holes 27A and 27B are provided on the other side at shifted positions.
28A and 28B are index plungers inserted through the index pin holes 26A and 26B from the index pin holes 25A and 25B.

The index plunger is used for positioning. In the embodiment, the index plunger is used for two kinds of dimensions, that is, a wide carton and a narrow carton. do not need.

Next, when adjusting the distance between the front holding pieces 13A, 13B and the rear holding pieces 6A, 6B, the driving sprocket 2 of the first endless chain conveyors 1A, 1B is used.
A, 2B and the upper tightening bolts 10A, 10B connecting the drive end sprockets 9A, 9B of the second endless chain conveyors 8A, 8B are disconnected to disconnect the drive end sprockets from each other and to release the flanges 15A, 15B. The lower fastening bolts 17A, 17B connecting the drive shafts 3A, 16B to the drive pulleys 16A, 16B are disconnected to disconnect the drive shafts 3A, 3B from the drive source (not shown).
Second endless chain conveyor 8A, 8 with 3B attached
Move B forward or backward.

Next, the first endless chain conveyors 1A and 1B to which the rear holding pieces 6A and 6B are attached are moved backward or forward. Since the center position of the carton 5 cannot be moved in relation to the equipment that performs various steps during the transportation, the first endless chain conveyors 1A and 1B and the second endless chain conveyor 8
By moving A and 8B in the opposite direction by the same length, the front and rear carriers are moved, and the gap between the front and rear holding pieces is adjusted.

Even if the drive side sprockets 2A, 2B of the first endless chain conveyors 1A, 1B and the drive side sprockets 9A, 9B of the second endless chain conveyors 8A, 8B rotate in opposite directions and shift in position. Since the drive-side sprockets 2A and 2B are provided with the elongated holes 11A and 11B, the fastening bolts 10A and 10B can be tightened.

Similarly, the rotation of the drive side sprockets 2A, 2B causes the flanges 15A, 15B to rotate and the drive pulley 1
6A, 16B, the flanges 15A, 1
Since the long holes 18A and 18B are provided in 5B, the tightening of the tightening bolts 17A and 17B is possible.

[0029]

According to the present invention, since the front side holding piece and the rear side holding piece are mounted on separate endless chain conveyors, both endless chain conveyors can be easily and quickly advanced and retreated in the opposite directions by the same length. This makes it easy to adjust the front-to-rear spacing between the front holding piece and the rear holding piece. Therefore, it is a versatile device that can correspond to all types of cartons.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the method of the present invention.

FIG. 2 is a partial plan view showing an embodiment of the method of the present invention.

FIG. 3 is a partial side view showing an embodiment of the method of the present invention.

FIG. 4 is a partial bottom view showing an embodiment of the method of the present invention.

[Explanation of symbols]

 1A, 1B Endless chain conveyor 2A, 2B Drive side sprocket 3A, 3B Drive shaft 4A, 4B Metal bearing 5 Carton 6A, 6B Rear holding piece 7A, 7B Rear carrier 8A, 8B Second endless chain conveyor 9A, 9B Drive Side sprockets 10A, 10B Tightening bolts 11A, 11B Long holes 12A, 12B Screw holes 13A, 13B Front holding pieces 14A, 14B Front carriers 15A, 15B Flanges 16A, 16B Drive pulleys 17A, 17B Tightening bolts 18A, 18B Long holes 19A, 19B Screw hole 20 Bottom support rail

Claims (1)

[Claims] 1. A pair of endless chain conveyors having the same advancing sides facing each other on the same plane are arranged in parallel, and a bottom receiving rail is installed between the endless chain conveyors. A set of carriers is attached to the front and back in the transport direction, and each carrier of the bottomed carton is clamped by a carrier holding piece to carry straight forward.
The front carrier of the front holding piece for holding the front corner of the bottomed carton and the rear carrier of the rear holding piece for holding the rear corner of the bottomed carton are mounted on separate endless chain conveyors. The front and rear of the bottomed carton in a bottomed carton straight-line transfer device, in which the distance between the front and rear holding pieces is adjusted by moving the conveyor in the opposite direction by the same length. Method of adjusting the spacing of the clamping pieces.