JPS629489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveying device suitable for conveying packages manufactured by a forming and filling machine, and more specifically, the present invention relates to a conveying device suitable for conveying packages manufactured by a forming and filling machine, and more specifically, the present invention relates to a conveying device suitable for conveying packages manufactured by a forming and filling machine. The present invention relates to a device that divides and conveys packaging bodies, that is, packaging sheets, into multiple rows.

PTP packaging (extrusion packaging) by forming and filling machine
When producing sheets at high speed, a wide wrapping film can be used to produce multiple rows (e.g. 3, 4 or more rows) at a time along the direction of film travel.
However, this method has the disadvantage that the molding device, the sealing device, and the trimming device for punching out the package from the packaging film become larger.

On the other hand, it is possible to mold fewer rows at a time (for example, 1
If an attempt is made to miniaturize each of the above-mentioned devices by forming two rows or two rows, the production capacity of packages that can be formed at one time, that is, packaging sheets, will be reduced. Therefore, if the manufacturing capacity is to be the same as in the case of multi-row molding, the packaging film feeding speed or punching speed must be doubled or more.

However, if the feeding speed of the packaging film and therefore the packaging sheet is increased, a problem arises in that it becomes impossible to visually inspect the packaging sheet in the subsequent process.
The feed speed on the inspection conveyor must be lower than the punching speed. For this reason, it is conceivable to store and transport multiple punched packaging sheets stacked vertically on a conveyor.
In this case, there is a problem that visual inspection of the lower packaging sheet is impossible.

The present invention was made in view of the above problem, and its purpose is to divide packaging sheets, which are supplied or sent out in a small number of stacked rows from a forming/filling machine or the like, into multiple rows and visually inspect them. An object of the present invention is to provide a packaging film conveying device that conveys a packaging film in one plane at an appropriate speed.

The present invention includes at least one main conveyor that conveys packaging sheets sent out from a punching device or the like in a stacked state, and a main conveyor that is arranged side by side with the main conveyor and that conveys packaging sheets sent out from a punching device or the like in a stacked state, and a main conveyor that conveys packaging sheets sent out from a punching device etc. At least one row of sub-conveyors for conveying packaging sheets, and at least one transfer mechanism for transferring an upper packaging sheet among the packaging sheets sent by the main conveyor onto the sub-conveyor, the transfer mechanism A rotating shaft is provided between the conveyor and the sub-conveyor in a substantially vertical state and is rotatable in synchronization with the main conveyor; A feeding claw that pushes and feeds the upper packaging sheet, and a substantially semicircular shape whose center of curvature is the center of rotation of the rotating shaft, one end of which is between the packaging sheets stacked up and down on the main conveyor, and the other end of which is located between the packaging sheets stacked one above the other on the main conveyor. The guide plate is located on the sub-conveyor and guides the packaging sheet fed by the feeding claw.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 8, an embodiment of a packaging sheet conveying device according to the present invention is shown.
As shown in FIG. 1, the conveying device 1 of this embodiment has two rows of main conveyors 2 and 2a for conveying packaging sheets stacked in two tiers, one on top of the other, and two rows of main conveyors 2 and 2a provided on both sides of the main conveyor. It is comprised of sub-conveyors 3, 3a and rotary transfer mechanisms 4, 4a for transferring the packaging sheets m on the main conveyor onto the sub-conveyor.

The main conveyors 2 and 2a each have a frame 20
An idler sprocket 22 rotatably attached to a shaft 21 fixed horizontally at one end, and a drive shaft 23 rotatably attached to the other end of the frame 20 and rotated by a known drive mechanism (not shown). It has a driving sprocket 24 attached to the sprocket, an endless rail, that is, an endless chain 25, which is hung between these sprockets, and a pair of guide rails 26, which are provided to sandwich the endless chain and guide the packaging sheet. The packaging sheet m placed on the left end (in FIG. 1) of the guide rail 26 is continuously transported in the direction of the arrow X by feed pawls 250 attached to the chain 25 at equal intervals.

As is clear from FIG. 6, the guide rail 26 is stepped in the middle (position B).
This is to facilitate separation of the upper and lower packaging sheets when the upper packaging sheet is sent to the sub-conveyor side by a rotary transfer mechanism, which will be described later.

A pair of play sprockets 32 rotatably attached to the shafts 31 of the sub-conveyors 3 and 3a, respectively.
32', a pair of drive sprockets 34, 34' fixed to the drive shaft 23, and endless chains 35, 35' suspended between these sprockets.
Placing plate 36 on which the packaging sheet m is slidably placed
and a guide plate 37 disposed obliquely in the direction of movement of the endless chains 35, 35'.

Endless chain 3 as shown in detail in FIG.
A guide rod 38 is provided at a predetermined interval between 5 and 35', and its both ends are fixedly supported by links 350, 350' of chains 35, 35'. A slider 39 is movably provided on the guide rod. The slider is located below the mounting plate 36, and a feed pawl 391 is formed at the top of the slider 39 to project upward through a slit 360 formed in the mounting plate. The slider 39 is adapted to slide on a guide plate 39' provided below and not rotate around the guide rod. The slit 360 is inclined with respect to the direction of movement of the chain in substantially the same manner as the guide plate 37.

Chain 3 in the sub-conveyor 3, 3a
5 and 35' move at the same speed in the same X direction as the chain 25 of the main conveyor 2, so the slider 39
And its feed claw 391 also moves at the same speed. Then, when the packaging sheet m is placed on the mounting plate 36 by the transfer mechanism described later at position B, the slit 360
The packaging sheet begins to be fed in the direction of arrow X using the feed claw protruding from the top surface. When the edge of the packaging sheet m comes into contact with the guide plate 37, the guide plate moves it toward the main conveyor at a position approximately in the middle of the apparatus, and from there it is sent parallel to the main conveyor downstream. At this time, the feed claw also moves toward the main conveyor on the guide rod 38 together with the slider 39 due to the action of the slit 360, and the feed claw no longer comes off the packaging sheet.

As shown in FIG. 4, a roller 392 is attached below the slider, and the roller is inserted into the slit 36.
Groove 300 of cam rail 30 provided the same as 0
The slider may be moved in the lateral direction (with respect to the direction of the arrow X) by placing the slider inside.

In addition, although not shown, a device similar to the mounting plate or a cam rail is provided on the return stroke of the conveyor chain, and during the return stroke, the feed claw is returned to its original position (the position where it enters the slit at the left end in Figure 1). ).

In FIG. 5, the rotary transfer mechanisms 4 and 4a each have a hollow cylindrical support tube 41 that is fixed upright to a base box 40, and are rotatably inserted into the support tube, with the upper and lower parts above the support tube. , has a rotating shaft 42 protruding from the lower end, and a support 43 inserted into the rotating shaft 42, fixed to the platform box 40 at the lower end, and having an upper end protruding above the rotating shaft 42.

A sleeve 44 is attached to the outer side of the upper end of the rotating shaft 43 via a spline or the like so that it rotates together with the rotating shaft and is movable relative to it in the vertical direction. A mounting plate 45 is secured to the upper flange 440 of the sleeve. Further, a roller 441 is rotatably attached to the lower outer periphery of the sleeve. This roller 441 is connected to a pair of cam members 46 and 4 provided outside the sleeve 44 and fixed to the support tube 41.
6' and moves within the cam groove as the sleeve rotates, thereby displacing the sleeve and mounting plate 45 as they rotate. It is designed to move up and down. This is to prevent interference between the packaging sheet and the feed pawl 250 when the upper packaging sheet on the main conveyor is transferred onto the sub conveyor along the guide plate by the feed pawl (to be described later). This is to move it upward.

A feed pawl 47 is rotatably provided on the mounting plate 45. The feed pawl 47 is rotatably attached to a bracket 450 fixed to the mounting plate 45, and is biased counterclockwise (in FIG. 5) by a spring 48. A roller 49 is rotatably attached to the rear end of the feed claw 47.
This roller is adapted to engage with a cam surface 500 of an end cam 50 attached to the upper end of the post 44. The cam surface 500 is retracted upward on the main conveyor side and is separated from the roller 49, and protrudes downward on the sub-conveyor side, and the protruding portion is connected to the roller 49.
9 to push down the roller, thereby lifting the tip of the feed claw.

As shown in FIG. 1, a semi-circular guide plate 51 is provided on the transfer path of the feed claw 47. As shown in FIG. As shown in FIG. 8, the end of the guide plate 51 on the main conveyor side is formed with a tip 510 separated by a recess 511 to prevent interference with the feed pawl 250 of the main conveyor. As shown in FIG. 6, the parts are arranged to fit between two stacked packaging sheets on the main conveyor. Further, as is clear from FIG. 6, this guide plate gradually rises as it goes toward the sub-conveyor side, and on the sub-conveyor side, as shown in FIG. It is located on the upper side with a high gap.

Therefore, the packaging sheet m sent on the guide plate to the sub-conveyor side can fall onto the placement plate 36 after passing the end of the guide plate. Feed claw 47
The tip 470 is formed into a shallow U-shape forming a sheet receiving space 471, and receives the packaging sheet therein to prevent the packaging sheet from shifting in the lateral direction during transportation. Further, a groove 472 into which the guide plate 51 can fit is formed in the lower part of the tip 470. Therefore, as is clear from FIG. 7, the packaging sheet slides on the guide plate with both edges pushed by the feed pawl 47 as the feed pawl 47 rotates.

A gear 430 is attached to the lower end of the rotating shaft,
This gear meshes with the gear of a drive mechanism (not shown) that is associated with the main and secondary conveyors, thereby causing the rotating shaft to operate in conjunction with both conveyors.

In the rotary transfer mechanism, the rotating shaft 42 rotates in conjunction with the chains of the main and sub-conveyors, so that the feed pawl 47 attached to the mounting plate 45 also rotates. When the feed claw faces the main conveyor side at position B, the tip moves down due to the action of the end cam 50 and pushes the trailing edge of the upper packaging sheet m on the main conveyor.
It is moved along the guide plate 51. and position B
When facing the sub-conveyor side, the leading end is lifted by the action of the end cam and the guide plate is also removed, so that the packaging sheet falls to a predetermined position on the placement plate.

Note that 52 is a stopper that prevents the packaging sheet from moving too far.

In the conveying device 1 having the above configuration, the packaging sheets punched out by the trimming device T are received by the suction type delivery device 6 and then placed in pairs in the bucket 70 of the rotary transfer conveyor 7 along the length of the packaging sheets. They can be placed side by side and in two tiers, one above the other.

The vertically stacked packaging sheets placed in the bucket 70 of the conveyor 7 are transported by the rotary transfer conveyor 7 to the main conveyors 2, 2a at position A.
The paper can be transferred onto the guide rail 26 of the paper by changing its orientation.

The packaging sheets m placed on the guide rails 26 of the main conveyors 2, 2a are pushed by the feed claws 250 and are sequentially charred on the guard rails in the direction of arrow X at a speed that allows visual inspection. When the position B is reached, the tip 47 of the feed claw 47 of the rotary transfer mechanism 4, 4a
0 is lowered by the action of the cam 50 as shown in FIG. 5, and the upper packaging sheet is fed along the guide plate 51 and transferred onto the placement plate 36 of the sub-conveyor 3, 3a. Further, the lower packaging sheet is moved as it is in the direction of arrow X by the main conveyor.

On the other hand, the packaging sheet placed on the placement plate 36 of the sub-conveyor 3 is pushed in the direction of arrow By engaging the edge of the packaging sheet m with the guide plate 37, it is moved toward the main conveyors 2, 2a as it moves in the direction of the arrow X. When the packaging sheets m reach a position C approximately in the middle of the sub-conveyor, four packaging sheets m are arranged in parallel.

Therefore, the feeding line for the packaging sheets, which are supplied in a small number of rows (two rows) stacked one above the other from the entrance side, is arranged in multiple rows (four rows) in one plane on the exit side. A visual inspection is then performed while the packaging sheet is being transferred from position C to the exit end (the right end in FIG. 1).

As is clear from the above explanation, according to the conveying device of the present invention, even packaging sheets that are stacked one on top of the other on a small number of feed lines can be conveyed in one plane at a speed suitable for visual inspection without causing any accumulation in the middle. They can be transported side by side, improving the quality of inspection of packaging sheets.

In the above embodiment, only one feed pawl of the transfer mechanism is provided on the mounting plate, but two feed pawls may be provided at positions facing each other in the diametrical direction. In this case, if the position of the feed pawl on the sub-conveyor side and the position of the feed pawl on the main conveyor side need to be at the same height, the sleeve 44 and the mounting plate 45 should be moved up and down at a cycle of 180 degrees. become. Therefore, in this case, the end of the guide plate on the side of the sub-conveyor must be placed in the same position as shown in FIG. 5, and the position of the placing plate must be lower than that.

Further, the feed pawl is not limited to the structure shown in FIG. 7, but may have another structure as shown in FIG. 9, for example.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of a packaging sheet conveying device according to the present invention, FIG. 2 is a side sectional view of the conveying device of FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG. 1. , Fig. 4 is a sectional view showing a modification of the slider shown in Fig. 3, Fig. 5 is an elevational sectional view of the transfer mechanism, Fig. 6 is an enlarged sectional view of one end of the guide plate, and Fig. 7 is a cross-sectional view of the feed claw. FIG. 8 is a perspective view of the tip, FIG. 8 is a plan view of one end of the guide plate, and FIG. 9 is a perspective view of a modified example of the feed pawl. 1: Conveyance device, 2, 2a: Main conveyor, 25:
Chain, 26: Guide rail, 3, 3a: Sub conveyor, 35: Chain, 36: Placement plate, 39:
Slider, 4, 4a: Transfer mechanism.

Claims (1)

[Claims] 1. At least one main conveyor that conveys packaging sheets sent out from a punching device, etc. in a stacked state, and a main conveyor that is arranged side by side with the main conveyor and that conveys the packaging sheets in approximately the same direction and at approximately the same speed as the main conveyor. At least one row of sub-conveyors for conveyance, and at least one transfer mechanism for transferring an upper packaging sheet among the packaging sheets sent by the main conveyor onto the sub-conveyor, and the transfer mechanism is connected to the main conveyor and to the sub-conveyor. A rotating shaft is provided between the sub-conveyor and the main conveyor in a substantially vertical state so as to be rotatable in synchronization with the main conveyor, and the upper packaging on the main conveyor is attached to the rotating shaft so as to protrude in the radial direction. A feed pawl that pushes and feeds the sheet, and a substantially semicircular shape whose center of curvature is the center of rotation of the rotating shaft, one end of which is located between the packaging sheets stacked vertically on the main conveyor, and the other end of which is located on the sub conveyor. is on top;
A packaging sheet conveyance device comprising a guide plate that guides the packaging sheet fed by the feed claw.