JP4230024B2 - Package supply device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
TECHNICAL FIELD The present invention relates to an article supply apparatus, and more specifically, to an apparatus for supplying a package while maintaining a predetermined positional relationship in a cylindrical packaging film.
[0002]
[Prior art]
As is well known, in a pillow wrapping machine as a kind of automatic wrapping machine, a belt-shaped film is continuously drawn out and guided to a bag making machine, and the tubular film is formed by passing through the bag making machine. On the other hand, a supply conveyor is provided on the upstream side of the bag making machine, and the articles to be packaged conveyed on the supply conveyor are sequentially supplied into the bag making machine, that is, into the tubular film at predetermined intervals. ing.
[0003]
And as a supply conveyor, the conveyor with a pushing finger generally arrange | positioned with a predetermined pitch is used, and it comes to supply with the space | interval according to the pitch of the pushing finger.
[0004]
[Problems to be solved by the invention]
However, the conventional packaged article supply apparatus has the following problems. That is, the arrangement pitch of the push fingers is longer than the cut dimension. Therefore, when feeding the packaged object into the cylindrical film, in order to match the moving speed of the film and the moving speed of the packaged object, the moving speed of the feeding finger must be increased or decreased, and the speed control is performed. Becomes complicated.
[0005]
Further, when packaging a plurality of articles together, the plurality of articles are positioned between the front and rear push fingers. For example, when the article is a curved side surface such as a bottle, the plurality of articles It is difficult to transport the articles in a state where they are aligned in the front-rear direction. Moreover, it was not possible to supply the plurality of articles with a constant interval.
[0006]
On the other hand, for example, as an apparatus for supplying a package to be continuously conveyed in a state where it is in contact with the front and back, a predetermined distance apart and supplying it into the cylindrical film, a plurality of belt conveyors are arranged at the front and back, Although there is one in which the moving speed of the belt conveyor on the downstream side is increased, in the case of a supply device using such a belt conveyor, there is a problem that it is difficult to make the interval between the front and back packages to be constant.
[0007]
The present invention has been made in view of the above-described background. The object of the present invention is to solve the above-described problems, with a simple configuration, and with the desired positional relationship of the packaged object with simple control. An object of the present invention is to provide an apparatus for supplying an article to be packaged, which can be supplied into the packaging film and can match the transport pitch of the article to be packaged with the cut size.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, the packaged article supply apparatus according to the present invention is a packaged article supply apparatus provided at a packaged article supply position to a packaging film, and includes a conveyance path ( In the embodiment, it corresponds to an “endless belt 13”) and a conveying means (corresponding to the “screw 14” in the embodiment) disposed on both sides of the conveying path. A spiral groove extending from one end to the other end is provided on the side surface of the body, the package is sandwiched between the spiral grooves formed in the pair of transport means, and guided to the rotation of the spiral groove as the transport means rotates. It is assumed that the package is moved forward .
The conveying means is provided with a plurality of spiral grooves, and the plurality of spiral grooves are continuously formed from one end to the other end of the conveying means without crossing each other. At this time, in the carry-in area of the transport means, the angle of the spiral groove, which is an angle formed by the axial direction of the transport means and the formation direction of the spiral groove, is matched by the plurality of spiral grooves, and the center of the transport means In the area, the angle of the spiral groove is set to be smaller than that of the carry-in area, and the angle of the preceding spiral groove is set to be smaller between the plurality of spiral grooves. The angle of the spiral groove to be maintained is maintained, and the angle between the plurality of spiral grooves is set to be larger as the angle of the preceding spiral groove .
In addition, the angle of the spiral groove provided in the carry-out area of the transport means is such that the rod-like body that moves by the most preceding spiral groove while the rod-like body moves in the carry-out area, It ’s best to set your body to catch up.
[0009]
If comprised in this way, the to-be-packaged goods which entered the conveyance means will move along a spiral groove with rotation of a conveyance means, and the space | interval before and behind will be uniquely determined by the pitch of a spiral groove. Therefore, since the package can be conveyed at the front-rear interval according to the pitch regardless of the front-rear interval before entering the conveying means, the package is wrapped in the packaging film at every desired interval. Things can be supplied.
[0011]
Furthermore, when the plurality of articles are packaged together by setting the angles of the plurality of spiral grooves as described above , for example, the individual articles are conveyed in the state of contacting each other on the upstream side of the conveying means. However, when the transport means is moved, it can be separated or collected, and can be collected in packaging units, and the collected units can be supplied to the packaging film at predetermined intervals.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a reference example as a premise of the packaged article supply apparatus according to the present invention. As shown in the figure, an article supply device 11 is arranged on the upstream side of the bag making machine 10 constituting the pillow packaging machine. The packaged article supply apparatus 11 includes an endless belt 13 that constitutes a conveyance path that is stretched over a pulley 12, and a screw 14 that is a pair of conveyance means disposed on both sides in the traveling direction above the endless belt 13. Yes.
[0013]
The screw 14 is located in the vicinity of the carry-in side of the bag making device 10, and receives a rotational force of the drive motor 15 so that the pair of screws 14 rotate in synchronization. Further, the screw 14 is configured by forming a spiral groove 14a around a rod-like body (in the embodiment, a “round bar”, but a square bar or other shapes are used). And this spiral groove 14a is comprised from one groove | channel from the one end of the screw 14 to the other end, and is the predetermined pitch P1. And the to-be-packaged item 16 (in this embodiment, a bottle) is sandwiched between the spiral grooves 14 a formed in the pair of screws 14.
[0014]
As a result, each of the articles to be packaged 16 conveyed in contact with the endless belt 13 back and forth enters the spiral groove 14a of the screw 14 sequentially from the head. Accordingly, each time the screw 14 is rotated once and the end of the spiral groove 14a is opposed (towards the center side of the endless belt 13), the articles 16 to be packaged enter the screw 14 one by one. And if the screw 14 rotates, the to-be-packaged object 16 will be advanced following the rotation of the spiral groove 14a, and will be sequentially supplied in the bag making machine 10. FIG.
[0015]
At this time, the distance between the front and rear of the article 16 to be advanced in the screw 14 coincides with the pitch P1 of the spiral groove 14a, so that the front and rear are separated by a predetermined distance P1 as illustrated. Therefore, even if the screw 14 is rotating at a constant speed, the article 16 that has been conveyed in contact with the endless belt 13 back and forth is separated from the front and back by a predetermined distance P1 and is sequentially wrapped at predetermined intervals. The product 16 can be supplied into the bag making machine 10. Moreover, the separation interval P1 is accurately determined by the pitch of the spiral groove 14a. Furthermore, if the pitch P1 and the cut dimensions are matched, the transport speed of the package 16 and the moving speed of the film are matched in the state where the screw 14 is rotated at a constant speed without particularly controlling the speed increase / decrease. Can be made.
[0016]
Reference numeral 17 in the figure denotes a center sealer, which is formed by forming a belt-like film (not shown) as a packaging film led to the bag making machine 10 into a cylindrical shape by passing through the bag making machine 10. The center end of the film is sealed with the center sealer 17.
[0017]
Further, in Reference Example described above, the packed material 16, an example has been described to be stored in the packaging body one by one, the present invention is to be packaged supply for housing a multi several in one package body as the apparatus can be applied. As an example, for example, when the three bins 16a, 16b, and 16c are stored together as the packaged object 16, the screw 14 can be handled as shown in FIGS. .
[0018]
That is, as shown in the figure, three spiral grooves 14 a, 14 b, 14 c are formed on the side surface of the screw 14. Each of the three spiral grooves 14a to 14c is continuously formed from one end to the other end of the screw 14 without crossing each other like a multi-thread screw. That is, at each end portion of the screw 14, the end portions of the spiral grooves 14 a to 14 c are located at intervals of 120 degrees, and the cross-sectional shape of each spiral groove 14 a to 14 c is half as shown in an enlarged view in FIG. 4. The shape of the screw 14 is ¼ circle at the end of the screw 14, and smoothly enters the spiral groove from the bins 16 a to 16 c that are the packages 16 and is sent out.
[0019]
Further, in this embodiment, the three bins 16a to 16c are grouped and packaged, so that the three bins 16a to 16c need to contact each other in the front and rear directions and be separated from the other packages (bin groups) 16. There is. Therefore, in the carry-in region A, the spiral grooves 14a to 14c are also made to coincide with the angle of the spiral groove (the angle formed by the axial direction of the screw 14 and the spiral groove forming direction), and the three spiral grooves 14a to 14c are adjacent to each other. Put it in a state. As a result, as shown in FIG. 3 , the bins 16 a to 16 c are transported in a state where they are in contact with each other even after entering the screw 14. In this example, the outer diameter of the bin 16 and the inner diameter of the cross section (semicircle) of each of the spiral grooves 14a to 14c are matched.
[0020]
Then, in the central area B, changing the angle with respect to the axis of the screw 14 of the spiral groove 14 a to 14 c, and minimize the angle of the first helical groove 14a of the preceding, it is conveyed by the first spiral groove 14a Conveying the bin 16c conveyed by the third spiral groove 14c by increasing the conveyance speed of the bin 16a (increasing the movement amount for one rotation of the screw 14) and maximizing the angle formed by the third spiral groove 14c. The speed was decreased (the amount of movement for one rotation of the screw 14 was reduced). Thereby, as shown in FIG. 3 , each bin 16a-16c which moves the center area | region B will be in the state which left | separated back and forth at equal intervals.
[0021]
Further, in the carry-out area C, contrary to the central area, the angle formed by each spiral groove 14a to 14c with respect to the axis of the screw 14 is changed, the angle formed by the preceding first spiral groove 14a is maximized, and the first spiral The conveyance speed of the bin 16a conveyed by the groove 14a is slowed (the movement amount with respect to one rotation of the screw 14 is reduced), the angle formed by the third spiral groove 14c is the smallest, and the bin 16a is conveyed by the third spiral groove 14c. The conveyance speed of the bin 16c is increased (the movement amount for one rotation of the screw 14 is increased). As a result, as shown in FIG. 3 , the bins 16a to 16c moving in the carry-out area C move so that the other bins 16b and 16c catch up with the preceding bin 16a, and the three bins 16a to 16c move forward and backward. Return to contact.
[0022]
However, since the first spiral groove 14a precedes in the intermediate region B at this time, the pitch of the spiral groove 14a (the amount of movement when the screw 14 makes one rotation) is larger than that in the carry-in region a. Since the pitch P2 is maintained in the intermediate area B and the carry-out area C, as shown in FIG. 3 , the three bins 16a to 16c as a group come into contact with each other and the other three bins 16a It will come apart from ~ 16c. Therefore, the three bins 16a to 16c can be sequentially supplied to the bag making machine 10 at a predetermined interval (pitch P2). Since other configurations and operational effects are the same as those of the reference example which is the above-described premise , detailed description thereof will be omitted.
[0023]
3 and 4, the spiral grooves 14a to 14c are brought into contact with each other in the carry-out region C. However, by appropriately adjusting the angle formed by the spiral grooves. For example, by separating the spiral grooves 14a to 14c by a predetermined distance, the three bins 16a to 16c to be gathered move while maintaining a state separated by a predetermined distance in the front-rear direction, and are manufactured in the separated state. It can be supplied into the bag 10.
[0024]
Of course, it is needless to say that the number of batches is not three but two or four or more. Moreover, it is not necessarily limited to an automatic packaging machine provided with a bag making machine, and is also applicable to a device that directly supplies an article to be packaged to a cylindrical film (manufactured from one or more strip-shaped films) it can.
[0025]
【The invention's effect】
As described above, the packaged article supply apparatus according to the present invention has a simple structure such as a conveying means composed of two rod-shaped bodies arranged in parallel, and is moved while being moved by the spiral groove formed in the saddle state. The objects to be packaged can be separated at intervals, and the objects to be packaged can be supplied into the packaging film (tubular film, bag making machine) in a desired positional relationship.
[0026]
Also, since the transport pitch of the packaged object and the cut dimensions can be matched, the packaged film can be smoothly wrapped by rotating the conveying means (bar-shaped body) screw at a constant speed (no acceleration / deceleration control is required). Can be supplied within.
[Brief description of the drawings]
FIG. 1 is a front view showing a reference example as a premise of a packaged article supply apparatus according to the present invention.
FIG. 2 is a side view of the same.
3 is a drawing showing the essential components in the form of a suitable implementation (screw) of the packaged articles supply device according to the present invention.
4 is a drawing showing the essential components in the form of a suitable implementation (screw) of the packaged articles supply device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Bag making machine 13 Endless belt 14 Screw 14a-14c Spiral groove 15 Motor 16 Package 16a-16c Goods

Claims (2)

A package supply device provided at a package supply position to the packaging film,
A transport path for receiving an article to be packaged, and transport means disposed on both sides of the transport path;
The conveying means is provided with a spiral groove extending from one end to the other end on a side surface of the rod-shaped body,
Wherein between a pair of helical grooves formed in the conveying means clamping the object to be packaged, a shall be forward movement of the objects to be packaged rotate the associated guided by the rotation of the spiral groove of the conveying means,
Each of the conveying means is provided with a plurality of the spiral grooves, and the plurality of spiral grooves are continuously formed from one end to the other end of the conveying means without crossing each other,
In the carry-in area of the transport means, the angle of the spiral groove, which is an angle formed by the axial direction of the transport means and the formation direction of the spiral groove, is matched with the plurality of spiral grooves,
In the central region of the transport means, the angle of the spiral groove is made smaller than that of the carry-in region, and the angle of the preceding spiral groove is set smaller between the plurality of spiral grooves,
In the carry-out area of the conveying means, the angle of the most preceding spiral groove is maintained, and the angle between the preceding spiral grooves is set to be larger between the plurality of spiral grooves.
The packaged article supply apparatus characterized by the above-mentioned. The angle of the spiral groove provided in the carry-out area of the conveying means is such that the rod-like body moving by the other spiral groove is moved to the rod-like body moving by the most preceding spiral groove while each rod-like body moves in the carry-out area. It is set so that it may catch up, The packaged article supply apparatus of Claim 1 characterized by the above-mentioned .

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