JPH10181717A - Adjustment of spacing or before behind clamping pieces that hold close-end carton in between in apparatus for conveying it straight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable speedily, easily, and efficiently adjusting carriers provided before and behind a carton correspondingly. SOLUTION: In an apparatus a pair of endless chain conveyors 1A, 1B are laid on a manner of having the sides going in the same direction in parallel and side by side on the same plane, a conveyance rail 3 is set between the endless chain conveyors 1A, 1B, a set of carriers 4A, 4B, 4C, 4D (4) arranged in front and in rear and at a fixed distance in the direction of the conveyance are attached mutually correspondingly to the respective endless chain conveyors 1A, 1B and a closed-end carton is clamped at each of its corners by clamping pieces 5A, 5B, 5C, 5D (5) of the carriers and conveyed directly. Of the angles formed through twisting of the closed-end carton 6 in a naturally twisted state and through change of shape of a horizontal plane to a lozenge the clamping pieces 5 of the carriers 4 which correspond to acute-angled parts (a) and the clamping pieces 5 of the carriers 4 which correspond to obtuse-angled parts (b), insofar as these clamping pieces are not in between, are moved mutually back and forth each in the opposite direction and by the same length on the endless chain conveyors 1A, 1B. After positioning of the clamping pieces by adjusting to the front-to- rear length of the closed-end carton 6 the apparatus is driven for conveyance.

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 of 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 straight-moving conveyor, a pair of endless chain conveyors are arranged in parallel with the same advancing sides facing each other on the same plane, and a conveying rail is installed between the endless chain conveyors so as to correspond to each endless chain conveyor. 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.

By the way, the carton to be transported straight has a bottom with a mandrel of the pre-process apparatus. However, this bottomed carton has insufficient corner treatment and has an open upper end. The higher the position, the more the shape is twisted and deformed into a rhombus shape. During transport, the carrier is clamped while being corrected into a rectangular shape by the clamping piece of the carrier.

[0008]

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.

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.

[0010] On the other hand, the adjustment of the distance between the carriers in the conveying direction is not allowed to move the center position of the carton in relation to the processing and 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.

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

[0013]

According to the method of the present invention, a pair of endless chain conveyors are arranged in parallel so that the same advancing sides are opposed to each other on the same plane, and a transfer rail is provided between the endless chain conveyors. A pair of carriers are attached to the chain conveyor at regular intervals in the transport direction at regular intervals, and each corner of the bottomed carton is clamped by the carrier's holding piece. Among the corners formed by twisting in the state and deforming the horizontal plane into a rhombus shape, the carrier holding pieces corresponding to the acute angle parts are endless chain conveyors within the range where the carrier holding pieces corresponding to the obtuse angle parts do not exist between them. Are moved back and forth by the same length in the opposite directions, positioned at the front and rear length of the bottomed carton, and then the apparatus is transported and driven.

In the method of the present invention, the holding space of the bottomed carton formed by the holding pieces of the four carriers is moved to the inner position where the diagonal carrier of the bottomed carton advances and retreats. A bottomed carton having the same length in the front and rear direction as the conveying direction between the holding pieces of a certain carrier can be held (an acute angle portion), and the holding pieces of the carrier corresponding to the other two angles (an obtuse angle portion) are actually held. Because it is outside between the carriers, the carton plays more widely than the carton in the middle.

However, in the case of a bottomed carton, a deforming force to a diamond shape acts in a natural state, so that a sufficient clamping force can be obtained only by clamping the protruding acute angle portion in a state of being pushed back against the deforming action. As a result, there is no hindrance to the holding and conveying operation.

Further, since the holding pieces of the actually held carrier advance and retreat in the opposite direction by the same length, there is no change in the center position between the two, that is, the center position of the bottomed carton to be held. It is possible to cope with a positional relationship with each processing device arranged for each process.

Therefore, if the carrier is set at a position where the square portion having the maximum width of the bottomed carton is sandwiched at the beginning of the production of the apparatus, the endless chain conveyors can be individually advanced and retracted to perform various positionings by positioning each other. It can be adjusted to the length of the carton.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a simplified plan view for explaining the method of the present invention, in which a pair of endless chain conveyors 1 are shown.
A and 1B are installed in parallel on the same plane with an interval,
The tip sprocket 2B is connected to a drive source and positively rotated so that the chain conveyors 1A and 1B intermittently rotate from the base to the tip from the base between the base sprocket 2A and the tip sprocket 2B.

A transport rail 3 is provided between the endless chain conveyors 1A and 1B, and the endless chain conveyors 1A and 1B.
, B, so that the carriers 4, 4,... Correspond to each other on the opposing surface, and the front and rear carriers 4A, 4B, 4C, 4,
D is a set of clamping pieces 5A and 5 having a flat L-shaped height for clamping the four corners of the bottomed carton 6 to be conveyed.
B, 5C, and 5D facing each other.

On the other hand, since the bottomed carton 6 is formed by bending a flat plate made of a paper material, it is twisted when the upper end is open, and the horizontal plane cannot be accurately maintained in a rectangular shape. As shown in the figure, it is deformed into a diamond shape as it goes upward.

Therefore, at the time of conveyance, the deformation of the rhombus shape is corrected to a rectangular shape, and the rhombus is clamped by the holding pieces 5A and 5D. (Figure 3). The acute angle portions A and A are pressed against the corresponding holding pieces 5A and 5D and come into strong contact with each other, and the obtuse angle portions B and B have almost no contact pressure with the corresponding holding pieces 5B and 5C, and substantially exert a conveying action. Not
The holding pieces 5B and 5C are provided in advance.

Therefore, when the position of the carrier 4 is changed with respect to the length of the various bottomed cartons 6 in the transport direction, the bottomed cartons 6 are substantially clamped by the clamping pieces 5A, 5B, 5C and 5D. A sharp angled part to be clamped at the a
It is sufficient to adjust the carriers 4A and 4D of A and 5D.

FIG. 4 shows carriers 4A, 4B, 4C, 4D and holding pieces 5 corresponding to two types of bottomed cartons 6A, 6B.
It shows the adjusted positional relationship between A, 5B, 5C and 5D. Since the center position 7 of the bottomed cartons 6A, 6B cannot be moved in relation to the equipment for performing the various steps during transport, the endless chain conveyors 1A, 1B move the carriers 4A, 4D in the same length in opposite directions. To adjust.

The holding piece 5 that actually performs the holding action
Since the bottomed cartons 6A and 6B are placed between A and 5D, if the holding pieces 5B and 5C are present in the adjusted space, the bottomed cartons 6A and 6B cannot be installed. Therefore, it is required that the holding pieces 5B and 5C corresponding to the obtuse angle parts B and B are not located between the holding pieces 5A and 5D.

To adjust the position of the holding pieces 5A, 5D, the endless chain conveyor 1 with the carriers 4A, 4D attached thereto.
The endless chain conveyors 1A and 1B can be easily adjusted by individually driving the endless chain conveyors 1A and 1B. Further, in the conventional configuration, the drive of both endless chain conveyors 1A and 1B is obtained from the same drive source, but the individual endless chain conveyors 1A and 1B are independently rotated by operating a clutch during transmission. It can be advanced and retreated.

[0026]

As described above, the method of the present invention is very easy and simple. The conventional structure can be used as it is, the distance between the carriers holding the carton can be adjusted, and the general purpose can be applied to all kinds of carton. It is a device that has the potential.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the method of the present invention.

FIG. 2 is a perspective view of a bottomed carton.

FIG. 3 is a plan view showing a relationship between a bottomed carton and a holding piece.

FIG. 4 is a plan view of a main part before and after adjustment.

[Explanation of symbols]

 Reference Signs List 1A, 1B Endless chain conveyor 2A, 2B Sprocket 3 Transport rail 4 Carrier 4A, 4B, 4C, 4D Carrier 5 Holding piece 5A, 5B, 5C, 5D Holding piece 6 Bottom carton 6A, 6B Bottom carton 7 Center position A Sharp angle Part B Obtuse angle

Claims (1)

[Claims] 1. A pair of endless chain conveyors are arranged in parallel so that the same advancing sides face each other on the same plane, a transfer rail is provided between the endless chain conveyors, and the endless chain conveyors are made to correspond to each other. 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.
Of the corners formed when the bottomed carton is twisted in a natural state and the horizontal plane is deformed into a rhombus shape, the carrier holding piece corresponding to the acute angle part is the area where the carrier holding piece corresponding to the obtuse angle part does not exist. The endless chain conveyors are moved back and forth by the same length in the opposite direction to each other, positioned at the front and rear length of the bottomed carton, and then transported and driven. A method of adjusting the distance between the holding pieces before and after.