JP4247548B2 - Packaging machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging machine, more specifically, a flat folded blank is opened in a square tube shape, the end of the blank container is folded and closed, and filled with contents such as milk. Then, it is related with the packaging machine which folds and closes the edge used as the container top part of a blank, and obtains a product.
[0002]
[Prior art]
This type of packaging machine has a plurality of radially extending mandrels overlaid with a cylindrical blank, an intermittently driven rotor arranged so that the mandrels are sequentially stopped at a plurality of processing stations, and the required processing 2. Description of the Related Art A device is known which includes a device group which is disposed at a station and which folds and closes an end portion of a blank container placed on a mandrel, which is a bottom portion.
[0003]
In the packaging machine described above, when manufacturing two types of containers, for example, large and small containers having different cross sections, two types of mandrels having different outer peripheral contour sizes are prepared corresponding to the cross sections of the containers. In addition, two types of mandrels were replaced with a rotor as necessary.
[0004]
[Problems to be solved by the invention]
In the packaging machine, it takes time to replace the mandrel, which is a major cause of a reduction in operating rate. In addition, there is a problem of machineability due to a defective mandrel mounting position due to an artificial operation at the time of mandrel replacement, that is, a poor supply from the feeder to the mandrel, a defective molding seal, and a safety problem.
[0005]
An object of the present invention is to provide a packaging machine that can solve the above-described problems and can accurately perform this in a short time and in terms of quality and safety when changing the size of a container. .
[0006]
[Means for Solving the Problems]
A packaging machine according to the present invention has a plurality of radially extending mandrels over which a cylindrical blank is fitted, and an intermittently driven rotor arranged so that the mandrels are sequentially stopped at a plurality of processing stations, and a required processing station And a device group that folds and closes the end of the blank container that is placed on the mandrel and closes the mandrel, all mandrels correspond to different types of blanks. Thus, a plurality of types of mandrel groups having different shapes are formed.
[0007]
In the packaging machine according to the present invention, since the rotor has mandrels corresponding to a plurality of types of blanks having different shapes, it is not necessary to replace the mandrels when changing the size of the container. Therefore, the work required for changing the size of the container can be performed in a short time.
[0008]
Further, all mandrels are included in one surface, and a group formed by sequentially selecting mandrels from a plurality of types of mandrel groups one by one in the rotor rotation direction is formed in the rotor rotation direction. If the rotor is phase-adjustable so that the rotor can change the stop position of the mandrel according to the type of mandrel group, the rotation direction of the mandrel can be freely adjusted. Simply change the phase and the required mandrels are ready for use.
[0009]
Furthermore, it is preferable that the container conveyor is disposed below the rotor so that the container conveyor extends as a starting end of the conveyor path, and the rotation axis of the rotor and the conveyor conveyor path are parallel to each other.
[0010]
Furthermore, the container conveyance conveyor may be arranged below the rotor so as to extend as a starting end of the conveyance path, and the rotation axis of the rotor and the conveyor conveyance path may be crossed.
[0011]
Further, all the mandrels are included in a plurality of parallel surfaces equal to the number of types of mandrel groups, and on each surface, the mandrel groups are arranged to be developed for each type, and the rotor is arranged. If the position of the mandrel in the rotor rotation axis direction can be adjusted so that the mandrel stop position can be changed according to the type of mandrel group, the mandrel can be moved in the direction of the rotor rotation center line, Necessary mandrels are ready for use.
[0012]
Furthermore, it is preferable that the container conveyor is arranged below the rotor so that the container conveyor extends as a starting end of the conveyor path, and the rotary shaft of the rotor and the conveyor conveyor path are crossed.
[0013]
Further, the mandrel group may be attached to the hub, and the hub may be attached to the rotary shaft so as to be movable in the axial direction.
[0014]
The mandrel group may be attached to the hub, the hub may be fixed to the rotating shaft, and the rotating shaft may be movable in the length direction thereof.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
In the following description, front and rear refer to the left side of FIG. 1 as the front and the opposite side as the rear, with reference to FIG. 1. Left and right refer to the left and right sides of the left and right sides of FIG. Left and right).
[0017]
<Embodiment 1>
Referring to FIG. 1, a container transport conveyor 11 having a forwardly extending transport path, and a container bottom forming apparatus 12, a spout supply apparatus 13, and a spout seal that are sequentially arranged from the rear to the front along the transport path. Shown are device 14, container cleaner 15, primary top breaker 16, filling device 17, secondary top breaker 18, top heater 19, primary top seal 21, secondary top seal 22 and branding device 23.
[0018]
The container transport conveyor 11 is intermittently driven so as to transport two containers C at a time at a pitch.
[0019]
The container bottom molding device 12 includes a rotor 31 and a device group 32 arranged around the rotor 31.
[0020]
The rotor 31 includes a horizontal rotation shaft 41 extending in the front-rear direction directly above the container conveyance path, a hub 42 fitted on the rotation shaft 41, and a front and rear mandrel row 43 provided on the outer periphery of the hub 42. I have. The front end portion of the rotating shaft 41 enters the index box 44.
[0021]
The front and rear mandrel rows 43 have the same structure. The pitch of the front and rear mandrel rows 43 corresponds to 1.5 pitches of the container transport pitch by the conveyor 11. Corresponding to the front and rear mandrel rows, the device group 32 is arranged in the same manner in the front and rear rows.
[0022]
Referring to FIG. 2, the mandrel row 43 includes a large mandrel group including eight large mandrels 51 and a small mandrel group including eight small mandrels 52. The large mandrel 51 and the small mandrel 52 are both rectangular rods having a rectangular cross section extending radially from the hub 42, but the cross section of the small mandrel 52 is smaller than the cross section of the large mandrel 51. .
[0023]
Adjacent large mandrels 51 and small mandrels 52 are alternately arranged in the rotor rotation direction. In other words, if one large mandrel 51 and one small mandrel 52 form one group, there are eight. The eight groups formed by the large mandrels 51 and the small mandrels 52 are continuously connected in the rotor rotation direction. As a result, a total of sixteen mandrels 51, 52 are included in one vertical plane.
[0024]
In FIG. 2, one of the large mandrels 51 faces directly from the hub 42. This is the final eighth processing station VIII, and first to eighth processing stations I to VIII are provided at regular intervals in the clockwise direction.
[0025]
The device group 32 includes a feeder 61, a positioning device 62, a primary bottom heater 63, a secondary bottom heater 64, a bottom breaker 65, a bottom seal device 66, a sampling device 67, and an unloader 68 that are sequentially arranged in the first to eighth processing stations. Become. A holding rail 69 is provided from the fifth processing station V to the sixth processing station VI.
[0026]
By the feeder 61, the rectangular tubular blank B is put on the large or small mandrels 51, 52. In FIG. 2, a blank B is put on the large mandrel 51. The amount of protrusion of the blank B from the mandrel 51 is accurately determined by the positioning device 62, the protruding end of the blank B is sequentially heated by the primary bottom heater 63 and the secondary bottom heater 64, and the protruding end of the blank B is The folding end is guided to the bottom seal device 66 while holding the folded state by the holding rail 69, and the folded end is guided by the bottom seal device 66. The portion is crimped to form a bottomed cylindrical container C, and the container C is removed from the mandrel 51 by the unloader 68 and transferred to the conveyor 11. The sampling device 67 is for removing the blank B which is not molded and sealed from the mandrel 51 in order to check the heat pattern.
[0027]
In the index box 44, a servo motor with a reduction gear and a gear mechanism (not shown) are housed. The servo motor adjusts the phase of the mandrels 51 and 52 in the rotational direction, and controls one of the large mandrel 51 and the small mandrel 52 to selectively stop at the first to eighth processing stations I to VIII sequentially. Is done. As a result, the size of the container can be changed with one touch.
[0028]
Two containers C are transferred from the two mandrel rows 43 of the rotor 31 one by one to the conveyor 11 at the same time.
[0029]
<Embodiment 2>
In the second embodiment, the same reference numerals are given to the portions corresponding to the portions shown in the first embodiment.
[0030]
Referring to FIG. 3, there is shown a container transport conveyor 11 and a container bottom forming device 12 disposed above the transport path start end.
[0031]
As shown in FIG. 4, the container transport conveyor 11 has a pair of left and right transport paths extending in parallel and facing forward. Along with both conveying paths, as in the case of the first embodiment, in addition to the container bottom molding device 12, a spout supply device, a spout seal device, a container cleaner, a primary top breaker, a filling device, a secondary top breaker, Although a top heater, a primary top seal, a secondary top seal, and a branding device are arranged, illustration is omitted here.
[0032]
The container transport conveyor 11 is configured to intermittently transport the containers C one by one in each transport path at one pitch.
[0033]
The container bottom molding device 12 includes a rotor 31 and a device group 32 arranged around the rotor 31.
[0034]
The rotor 31 is provided on each of the outer circumferences of a horizontal rotation shaft 41 extending in the left-right direction so as to cross right above the container transport path, a pair of left and right hubs 42 fitted on the rotation shaft 41, and both hubs 42. Left and right mandrel rows 43. The rotating shaft 41 is passed through the index box 44 in the middle of its length.
[0035]
The left and right mandrel rows 43 have the same structure, and are respectively positioned directly above both container transport paths. The device groups 32 having the same structure are arranged in the same manner in the left and right rows corresponding to the left and right mandrel rows 43.
[0036]
Each mandrel row 43 includes a large mandrel group including six large mandrels 51 and a small mandrel group including six small mandrels 52. The number of large mandrels 51 and small mandrels 52 is different from that of the first embodiment, but the structure thereof is the same as that of the first embodiment.
[0037]
In the second embodiment, six groups formed by six large mandrels 51 and small mandrels 52 are continuously connected in the rotor rotation direction. In each mandrel row 43, all twelve mandrels 51 and 52 are included in one vertical plane.
[0038]
The large mandrel 51 or the small mandrel 52 is set as the final sixth processing station VI where they are directed downward, and the first to sixth processing stations I to VI are provided at equal intervals in the counterclockwise direction. Yes.
[0039]
The apparatus group 32 includes a feeder 61, a primary bottom heater 63, a secondary bottom heater 64, a bottom breaker 65, a bottom seal device 66, an unloader 68, and a fourth processing station, which are sequentially arranged in the first to sixth processing stations I to VI. It includes a holding rail 69 provided from IV to the fifth processing station, but lacks the positioning device 62 and the sampling device 67.
[0040]
The system in which the rotor 31 is driven so that one of the large and small mandrels 51 and 52 is stopped by the processing stations I to VI is the same as in the first embodiment, and the operation of the device group 32 is also the same as in the first embodiment. The same as the case of 1. Further, in the second embodiment, one container C is transferred from the two mandrel rows 43 of the rotor 31 to the two conveying paths of the conveyor 11 one by one.
[0041]
<Embodiment 3>
In the third embodiment, parts corresponding to those shown in the first and second embodiments are denoted by the same reference numerals.
[0042]
Referring to FIG. 5, there is shown a container transport conveyor 11 and a container bottom forming device 12 disposed above the transport path start end.
[0043]
As shown in FIG. 6, the point that the container transport conveyor 11 has a pair of left and right transport paths extending forward in parallel with each other is the same as in the second embodiment. Further, in the same manner as in the first embodiment, in addition to the container bottom molding device 12, the spout supply device, the spout seal device, the container cleaner, the primary top breaker, the filling device, the secondary Although a top breaker, a top heater, a primary top seal, a secondary top seal, and a branding device are arranged, illustration is also omitted here.
[0044]
The point that the containers C are transported one by one in each transport path of the conveyor 11 is the same as in the second embodiment.
[0045]
The container bottom molding device 12 includes a rotor 31 and a device group 32 arranged around the rotor 31.
[0046]
The rotor 31 is provided on the outer periphery of the horizontal rotation shaft 41 extending in the left-right direction so as to cross right above the starting end of the container conveyance path, the pair of left and right hubs 42 fitted on the rotation shaft 41, and both hubs 42. The left and right mandrel rows 43 are provided.
[0047]
Referring to FIG. 6, the rotary shaft 41 is passed through the index box 44 in the middle of its length and is received by the bearings 45 at both left and right ends. Serrations 46 are provided on the outer surface of the rotating shaft 41 projected from the index box 44 and the bearing 45, respectively. Both hubs 42 are fitted to serrations 46 so as to be movable.
[0048]
The left and right mandrel rows 43 have the same structure and are positioned substantially above the container transport paths. In the device group 32, devices having the same structure are arranged in the same manner in the left and right rows corresponding to the left and right mandrel rows.
[0049]
Here, each mandrel row 43 includes a large mandrel group including eight large mandrels 51 and a small mandrel group including eight small mandrels 52. The basic structures of the large mandrel 51 and the small mandrel 52 are the same as those in the first and second embodiments.
[0050]
In the first and second embodiments, the large mandrels 51 and the small mandrels 52 are alternately arranged in the rotor rotation direction. However, in the third embodiment, the eight large mandrels 51 and the eight small mandrels 52 are arranged on the left and right sides. They are lined up in parallel. In other words, the large mandrel group and the small mandrel group are respectively included in a pair of left and right vertical planes that extend in parallel to each other, and are expanded respectively.
[0051]
When the large mandrel 51 and the small mandrel 52 are located directly below, the final eighth processing station VIII is provided, so that the first to eighth processing stations I to VIII are provided at equal intervals in the counterclockwise direction. Yes.
[0052]
The apparatus group 32 includes a feeder 61, a primary bottom heater 63, a secondary bottom heater 64, and a bottom breaker which are sequentially arranged in the first, third, fourth, fifth, sixth and eighth processing stations I, III, IV, V, VI and VIII. 65, a bottom seal device 66 and an unloader 68, and a holding rail 69 provided from the fifth processing station V to the sixth processing station VI. The positioning device 62 and the sampling device 67 are lacking. The second processing station II and the seventh processing station VII are idle stations.
[0053]
In the third embodiment, when changing the size of the container, instead of changing the phase in the rotation direction of the mandrel, either the large mandrel 51 or the small mandrel 52 is moved by moving the hub 42 in the left-right direction. May be positioned directly above the container transport path.
[0054]
FIG. 7 shows a modification of the rotor 31. A serration 46 is provided in the middle of the rotating shaft 41 of the rotor 31, and this portion is movably penetrated through the index box 44. Further, both left and right end portions of the rotating shaft 41 are movable in the length direction with respect to the bearing 45. Therefore, the rotating shaft 41 itself is movable in the length direction. Both hubs 42 are fixed to the rotating shaft 41.
[0055]
When changing the size, the rotating shaft 41 may be moved left and right together with the hub 42 and the mandrel row 43 so that either the large mandrel 51 or the small mandrel 52 is positioned directly above the container conveyance path.
[0056]
Also in the third embodiment, as in the first embodiment, the rotor rotation shaft and the conveyor conveyance path may be parallel.
[0057]
Furthermore, although a large mandrel group and a small mandrel group are provided in one hub, instead of this, the large mandrel group and the small mandrel group may be provided in separate hubs.
[0058]
【The invention's effect】
According to the present invention, when changing the size of the container, this can be accurately performed in a short time and also in terms of quality and safety.
[Brief description of the drawings]
FIG. 1 is a side view of a packaging machine according to Embodiment 1 of the present invention.
2 is a cross-sectional view perpendicular to the line II-II in FIG.
FIG. 3 is a side view of a packaging machine according to Embodiment 2 of the present invention.
4 is a cross-sectional view perpendicular to the line IV-IV in FIG. 3;
FIG. 5 is a side view of a packaging machine according to Embodiment 3 of the present invention.
6 is a cross-sectional view perpendicular to the VI-VI line of FIG.
FIG. 7 is a cross-sectional view corresponding to FIG. 6 showing a modification of the rotor of the packaging machine according to Embodiment 3 of the present invention.
[Explanation of symbols]
31 rotor
32 devices
51 large mandrels
52 Small Mandrel B Blank

Claims (5)

An intermittently driven rotor having a plurality of radially extending mandrels over which a cylindrical blank is fitted and arranged such that the mandrels are sequentially stopped at a plurality of processing stations; In a packaging machine comprising a device group that folds and closes an end that becomes a container bottom of a covered blank,
All mandrels are configured to form a plurality of types of mandrel groups having different shapes corresponding to a plurality of types of blanks of different shapes,
A packaging machine characterized by that. All the mandrels are included in one surface, and a group formed by sequentially selecting mandrels from a plurality of types of mandrel groups one by one and sequentially arranging them in the rotor rotation direction is successively connected in the rotor rotation direction. The packaging machine according to claim 1, wherein the rotor is phase-adjustable in the rotational direction of the mandrel so that the rotor can change the stop position of the mandrel according to the type of the mandrel group. All the mandrels are included in a plurality of parallel surfaces equal to the number of types of mandrel groups, and on each surface, the mandrel groups are arranged to be expanded by type, and the rotor is a mandrel. The packaging machine according to claim 1, wherein the position of the mandrel in the rotor rotation axis direction can be freely adjusted so that the stop position of the mandrel can be changed according to the type of group. 4. The packaging machine according to claim 3, wherein the mandrel group is attached to a hub, and the hub is attached to the rotary shaft so as to be movable in the axial direction thereof. The packaging machine according to claim 3, wherein the mandrel group is attached to a hub, the hub is fixed to a rotating shaft, and the rotating shaft is movable in the length direction thereof.

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