JPS6227892B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a metal plate container manufacturing apparatus for manufacturing containers obtained by using a plurality of metal plates and joining the metal plates to each other by seaming. In particular, it relates advantageously to the production of containers which are seamed on both opposing walls of the resultant container.

1 to 3 are perspective views showing examples of containers advantageously manufactured by the apparatus of the present invention.
FIG. 1 shows an inner box 1 of a vending machine for soft drinks, etc., which is composed of a side plate 11 having three sides and a U-shaped cross section, a top plate 12, and a bottom plate 13. Second
The figure shows an inner box 2 of a refrigerated case with an opening on the front side, and includes a main plate 21 comprising a part of the front wall, a bottom wall and a rear wall, and side plates 22, 2 forming both side walls.
It is composed of 3. FIG. 3 shows a box 3 as an example of a container, which is composed of a side plate 31 having four side walls, and a top plate 32 and a bottom plate 33 that close openings at both ends of the side plate 31. Note that the opening of box 3 in FIG. 3 is omitted.

In manufacturing the boxes 1, 2, 3 as described above, the plates must be joined together. For this purpose, projecting portions 4 are formed at corner portions where the plates intersect with each other.

FIG. 4 shows an enlarged view of a conventional joint. As shown here, the plates are superimposed on each other at the overhang 4 and joined in this state by spot welding.

In general, the inner boxes 1 and 2 as shown in FIGS. 1 and 2 need to be painted, and even the box 3 shown in FIG. 3 may require painting. However, if spot welding is used to manufacture the boxes 1, 2, 3, each plate must be unpainted. Then, after the spot welding is completed and the desired shape is formed, painting will be applied. However, the inner boxes 1 and 2 shown in FIGS. 1 and 2 are usually large in size, and when the box 3 in FIG. bad. For this purpose, it is desirable to manufacture the boxes 1, 2, 3 using pre-painted metal plates.

FIGS. 5 to 7 are enlarged views for explaining the seaming process as a method that can advantageously be manufactured using a painted metal plate. Figures 5 to 7 are
A corresponding portion is shown in the portion shown in FIG. 4 mentioned above. This will be explained with reference to FIGS. 5 to 7 in association with the constituent elements of the inner box 1 shown in FIG. 1.

A side plate 11 serving as a first metal plate constituting a first wall surface of the container and a top plate 12 serving as a second metal plate constituting a second wall surface intersecting the first wall surface are arranged as shown in FIG. , and positioned as shown in FIG. In the state shown in FIG. 6, the end edges of the side plate 11 and the top plate 12 that are joined to each other are overlapped with each other. The end edge portion includes a first overhang portion 41 that overhangs in the direction in which the top plate 12 extends, and a second overhang portion 42 that is an end edge of the first overhang portion 41 and overhangs in the direction in which the side plate 11 extends. including. Then, the second projecting portion 42 is tightened, and the edge portions of the side plate 11 and the top plate 12 are rolled together, thereby forming the tightening portion 43. In this way, the side plate 11
and the top plate 12 are mutually joined. On the other hand, regarding the side of the bottom plate 13 constituting the third wall surface facing the second wall surface, the end edges of the side plate 11 and the bottom plate 13 where they are joined to each other are also bonded to each other in the same manner as shown in FIG. are superimposed. To explain by assigning the same reference numerals to corresponding parts, there is a third projecting portion 41 that projects in the direction in which the bottom plate 13 extends, and a third projecting portion 41 that projects from the edge of the third projecting portion 41 in the direction in which the side plate 11 extends. 4th overhanging part 42, and the fourth overhanging part 42 is tightened. In this way, the inner box 1 shown in FIG. 1 is formed. Unlike spot welding, this method does not require a complicated painting process because it can use pre-painted metal plates. Similarly,
It will be appreciated that the boxes 2 and 3 of FIGS. 2 and 3 can also be manufactured by seaming.

In addition, as shown by the imaginary line in FIG. 6, the second projecting portion 42a is formed so as to extend from the edge of the first projecting portion 41 to the side opposite to the side facing the top plate 12, and the seaming process is performed. A similar joint can be achieved by applying .

This also applies to the bonding on the bottom plate 13 side.

In this way, boxes 1 and 2 in Figures 1 to 3,
In a container like No. 3, seaming is performed on both the second wall surface (top plate 12, 32 or side plate 22) and the third wall surface (bottom plate 13, 33 or side plate 23) which face each other. In order to efficiently manufacture such a container, a mold for seaming is required for both of the above-mentioned parts. Furthermore, if the dimension in the height direction of the first wall surface (side plates 11, 31 or main plate 21) is changed, the distance between the second wall surface and the third wall surface will be changed, and both of the molds described above will be changed. It is desired that the mutual distance be adjustable. It will be appreciated that such an adjustable configuration is also required, especially as the container becomes larger, since dimensional errors in the height direction become relatively large.

Therefore, the present invention provides a container made of a metal plate manufactured by seaming and having a first wall surface, a second wall surface, and a third wall surface as described above, in which the dimension in the height direction of the first wall surface is varied in various ways. The object of the present invention is to provide a metal plate container manufacturing apparatus that can easily cope with such problems.

Such technical problems are solved in this invention,
It is solved as follows.

First, the metal plate container manufacturing apparatus of the present invention is intended to manufacture the following containers. That is, to explain with reference to FIG. 1 and FIGS. 5 to 7, the first wall constituting the first wall surface of the container
a metal plate 11 and a second wall surface that constitutes a second wall surface that intersects with the first wall surface at one edge of the first wall surface;
a metal plate 12; and a third metal plate 13 forming a third wall surface that faces the second wall surface and intersects with the first wall surface at the other end edge of the first wall surface,
The container is manufactured by joining mutual corner portions of the first metal plate 11, the second metal plate 12, and the third metal plate 13 to each other, wherein the first metal plate 11 and the third metal plate 13 are bonded to each other. The first edge portions to be joined to the second metal plate 12 and the second edge portions to be joined to the first metal plate 11 and the third metal plate 13 are overlapped with each other, and The first end edges overlapped with each other include a first overhang portion 41 that overhangs in the direction in which the second wall surface extends, and a first overhang portion 41 that overhangs in the direction in which the first wall surface extends from the edge of the first overhang portion 41. 2 overhanging portions 42 or 42a, and the second end edge portions that are overlapped with each other extend from a third overhanging portion 41 that overhangs in the extending direction of the third wall surface and an edge of the third overhanging portion 41. A fourth projecting portion 42 or 42 projecting in the direction in which the first wall surface extends.
a, and the second overhanging portion 42 or 42a and the fourth overhanging portion 42 or 42a are each tightened to form the first metal plate 11, the second metal plate 12, and the third metal plate. This is a container obtained by joining 13 to each other.

In order to manufacture such a container, the present invention includes the following structural requirements. That is, further referring mainly to FIGS. 8 and 9, a presser mold is used to press a pair of first set of seaming molds 110 for seaming the second projecting portion 42 or 42a. 111, a pair of second set of seaming molds 110 and a presser mold 111 for seaming the fourth projecting portion 42 or 42a; a first set of seaming molds 111 of the pair; a first press device 115 for bringing the presser mold 111 close to each other; a second press device 115 for bringing the second pair of seaming molds 110 and the presser mold 111 close to each other; In order to adapt to changes in the distance between the second metal plate 12 and the third metal plate 13, the first set and the second set of the seaming mold 110 and the presser mold 111, which form a pair, respectively, are used. means 120 for adjusting the distance between the two sets of objects; and an inner corner side where the first metal plate 11 and the second metal plate 12 intersect, and the first metal plate 11 and the third metal plate. On the inner corner side where 13 intersects,
Each of the mounting blocks 144 is provided with a pair of mounting blocks 144 that support the tightened portions and whose spacing between them is adjustable.

Hereinafter, the invention will be explained in more detail in connection with examples.

FIG. 8 is a schematic layout diagram of a metal plate container manufacturing apparatus according to an embodiment of the present invention. Referring to Figure 8,
First, the general configuration of this device will be explained. In relation to the container manufacturing apparatus 100, first and second work yards 51, 52 and a product yard 53 are arranged. In addition, the container manufacturing device 10
0 is the first work set position 101, the second work set position
It has a work set position 102, a transfer direction switching position 103, and a seaming position 104. It is provided with first and second mounting bases 105, 106 for mounting workpieces that are sequentially moved between these positions, and these mounting bases 105, 1
06 is the first workpiece moving motor 10 in the x direction.
7, and is moved in the y direction by a second workpiece moving motor 108. The workpiece W brought to the seaming position 104 (a part of which is shown) is placed in a pair of seaming mold 110 and presser mold 111 (only a part of which is shown). Then the seaming is done. The seaming mold 110 is supported by a seaming support plate 112, and the presser mold 111 is supported by a presser support plate 113 via a connecting member 114. Tightening cylinder 1 serving as a press device
15 is fixed to the presser support plate 113, and its plunger 116 is fixed to the support plate 11 for tightening.
It is fixed at 2. Although not shown here, the molds 110, 111 and the tightening cylinder 115, which is another press device, are also arranged symmetrically on the right side. In this way, the seaming mold 11 is driven by the seaming cylinder 115.
0 and the presser die 111 are brought close to each other, and the workpiece W is tightened. Support plate for presser foot 1
Reference numeral 13 includes a portion that is screwed into a male threaded portion formed on the outer circumferential surface of the adjustment rod 120, and by rotating the adjustment rod 120 by driving the x-direction adjustment motor 121, the presser foot support plate 113 and directly Or indirectly held connecting member 114, presser mold 111, seaming cylinder 1
15, the plunger 116, the seaming support plate 112, the seaming mold 110, etc. are integrated x
direction, thereby adjusting the position of these elements in the x direction. This is to match the length of the workpiece W in the x direction, and is a characteristic configuration of the present invention. The presser mold 111 is configured to be removable by a presser cylinder 117,
It is configured to allow the work W to pass through. The connecting member 114 is provided on the presser support plate 113 so as to be movable in the y direction, and is driven by the y direction adjustment motor 122. This adjustment is for adapting to the dimension of the workpiece W in the y direction. Note that the seaming mold 110 is also configured to move in conjunction with this movement in the y direction.

In the above configuration, the general operation and operation will be explained. Works to be seamed are sequentially carried into the first and second workyards 51 and 52, and products that have been seamed are sequentially carried out from the product yard 53. In FIG. 8, arrows indicated by chain lines indicate the movements of the worker, and arrows indicated by broken lines indicate the movements of the workpiece. First, an operator transports a work from the first work yard 51 to the first work set position 101 (arrow w1), and sets the work on the first mount 105 located at the first work set position 101. At this time, the worker is moving in the direction indicated by arrow m1.

Next, the worker moves in the direction indicated by arrow m2,
Operate the start button 109. In response to this, the first mounting base 105 and the second mounting base 106 simultaneously move to the right while maintaining their mutual positional relationship. Therefore, the workpiece set on the first mount 105 moves in the direction shown by the arrow w2 and reaches the transfer direction switching position 103. At the same time, the second mounting base 106 reaches the second workpiece set position 102.

Next, the first mounting base 105 in the switching position 103 moves to the tightening position 104, and the workpiece accordingly moves in the direction shown by the arrow w3. In this tightening position 104, the x-direction adjustment motor 121 and the y-direction adjustment motor 122 operate to perform proper positioning, and the presser cylinder 117 operates to cause the presser die 111 to become an obstacle to the passage of the workpiece W. After making sure that it does not become
The presser die 111 is displaced so as to act on the workpiece W, and in this state, the seaming cylinder 115 is driven to perform seaming. The tightened workpiece is moved in the direction indicated by the arrow w4 and reaches the transfer direction switching position 103 again.

Note that during the seaming process described above, the operator moves in the direction shown by arrow m3 and holds the second mounting base 1 brought to the second work set position 102.
The workpiece set at 06, which has already been seamed, is taken out, and while moving in the direction shown by the arrow m4, the workpiece that has become a product is transported in the direction shown by the arrow w6, and brought to the product yard 53. Then, the worker moves in the direction indicated by mark m5, takes out the workpiece from the second workyard 52, and places it on the second mounting base 106 located at the second workset position 102, where the seaming is then performed. Set the work to be done.

When the setting of the work described above is completed, both the first mounting base 105 located at the switching position 103 and the second mounting base 106 located at the second work setting position 102 move to the left, and the first mounting base 106 is moved to the left. The already tightened work set on the table 105 moves in the direction shown by the arrow w5 to the first work set position 101, and at the same time the second mounting table 106 moves to the transfer direction switching position 1.
Move to 03. Then, the workpiece set on the first mount 105 is
The workpiece was replaced with a workpiece that had not been seamed, and the second
The work set on the mounting base 106 now reaches the tightening position 104. By repeating the above-mentioned actions or operations, containers as products can be obtained one after another.

Next, the above-mentioned container manufacturing apparatus 100 will be explained in more detail with reference to FIGS. 9 to 14.

9 is a plan view, FIG. 10 is a front view, and FIG. 11 is a sectional view taken along line XX in FIG. 9. The description of the container manufacturing apparatus 100 shown here will be explained in the first section, which describes the seaming process with reference to FIGS. 5 to 7.
This is performed when manufacturing the inner box 1 shown in the figure. This container manufacturing apparatus 100 can be roughly divided into a work transfer device and a seaming device, and the seaming device includes a mold, a press device, and a position adjustment device.

First, the work transfer device included in this container manufacturing apparatus 100 will be explained. The work transfer device moves to each position 101, 10 shown in FIG.
1st mounting base 105 that moves 2, 103, 104
and a second mount 106. Mounting stand 105,
Guides 130, 131 along the movement path of 106
and grooves 132 and 133 are provided extending in a T-shape. And each mounting base 105, 106
The mounting base body 134, the slide base 135 that holds it on its upper surface, and the slide base 135
A moving rod 136 attached to the lower surface, a connecting portion 13 attached to the lower end of the moving rod 136
Contains 7. The slide base 135 is the guide 13
0,131, and the moving rod 136 moves along the grooves 132,133. Such movement of the mounting base 105 or 106 is realized by applying force to the connecting portion 137. This force must then be applied in the x direction when guided by the guide 130 and the groove 132;
1 and groove 133, it must be applied in the y direction. For that purpose, the first
The second workpiece moving motor 107 acts to apply a force in the x direction via a chain 138, and the second workpiece moving motor 108 acts to apply a force in the y direction via a chain 139. Chain 138, 139 to mounting base 105 or 106
The transmission mechanism leading to the connecting portion 137 will be explained with reference to FIG.

FIG. 12 is a perspective view of a preferred embodiment of a transmission mechanism for moving the mount. x shown here
A directional hook (shown in phantom) 140 is attached to chain 138 and moves in the x direction. Further, the y-direction hook 141 is attached to the chain 139 and moves in the y-direction. Both hooks 140 and 141 have a substantially C-shaped cross section and are arranged in directions perpendicular to each other. An x-direction engaging portion 142 that forms an engaging pair with the x-direction hook 140
is attached to the side surface of the connecting portion 137 facing in the x direction, and the y direction engaging portion 143, which forms a pair of engagement with the y direction hook 141, is attached to the side surface of the connecting portion 137 facing in the y direction. Both engaging portions 142, 143
has a nearly T-shaped cross section. The operation will be explained below with reference to FIG.

Now, as shown in FIG.
0 engages with the x-direction engaging portion 142 and connects the connecting portion 137.
That is, assume that the mounting base 105 or 106 is moving in the x direction. When the y-direction engaging portion 143 fits into the y-direction hook 141 on this x-direction movement path, the connecting portion 137 is stopped. This stop position corresponds to when the mount 105 or 106 is in the transfer direction switching position 103 (FIG. 8). In this state, this time the y direction hook 1
41 is moved in the y direction, the x direction engaging portion 1
42 is removed from the hook 140 in the x direction and connected to the connecting portion 1.
37, that is, the mounting base 105 or 106 moves in the y direction. Conversely, the y-direction hook 14
1, when the connecting portion 137 is returned to the above-mentioned stop position, the x-direction hook 140 waiting there
The x-direction engaging portion 142 will fit into the x
It will be moved in the x direction by the direction hook 140.

In this way, the mounting base 105 or 106
is guided by guide 130 and groove 132
movement in the direction and movement in the y direction guided by the guide 131 and the groove 133. In addition,
As explained with reference to FIG. 8, there are two
Since the two mounts 105 and 106 are moved simultaneously, the x-direction hook 140 in FIG.
Two pieces will be mounted on the chain 138 in connection with this.

Referring again to FIGS. 9 to 11, a mounting block 144 is provided to be held by the mounting base body 134 of the mounting bases 105, 106. This mounting block 144 is for mounting a workpiece, for example, the inner box 1 (FIG. 1) before or after seaming. This mounting block 144 must be in close contact with the seaming portion of the workpiece as much as possible when the workpiece is seamed as will be described later. However, on the other hand, in the case of a workpiece such as the inner box 1 shown in FIG. 1, which requires seaming on three sides at least on one side, the dimensions of the mounting block 144 are such that the mounting block 144 is in close contact as described above. If this is selected, it will cause problems in mounting and removing the workpiece. For this reason, it is desirable that the mounting block 144 be constructed so that its dimensions can be reduced at least in some directions.
It is also desirable that the mounting block 144 be constructed to absorb some degree of dimensional error in the workpiece. An example of a mounting block 144 that can meet these needs is shown in FIG.

FIG. 13 is a perspective view of a portion of a preferred embodiment of mounting block 144. In this figure, the inner box 1 of FIG. 1 is illustrated as a workpiece by an imaginary line. This mounting block 144 is attached to the mounting base 10.
The first slide plate 14 is fixedly provided on the slide base 135 of 5 or 106, etc.
Contains 5. This first slide plate 145 is
To explain how it is connected to the configuration shown in FIG. 12, the moving rod 13 in FIG.
6, a slide base 135 is fixed as shown in FIG.
is retained. The upper surface of this mounting base body 134 is
It contacts the downwardly facing inner surface of the inner box 1 as a workpiece to position the inner box 1 in the vertical direction.
A first slide plate 145 is attached to extend from a relatively lower portion of the mount body 134 on both sides in the x direction. Note that the x direction and y direction in FIG. 13 correspond to the x direction and y direction in FIG. 12, respectively. The first slide plate 145 includes a first dovetail 146 extending in the x direction on its upper surface. 1st slide plate 1
A second slide plate 147 is held on the upper surface of the slide plate 45 . Two y-direction slide presser blocks 148 and 149 are held on the upper surface of the second slide plate 147 to support the seaming portion on the inner corner side where the side plate 11 and the top plate 12 intersect. A trapezoidal x-direction slide holding block 150 is interposed between the blocks 148 and 149. Note that from the second slide plate 147 disposed on the first slide plate 145
Two sets of elements up to the direction slide presser block 150 are provided symmetrically to each other on each side of the top plate 12 and bottom plate 13, but only one of them is illustrated and the illustration of the other is omitted. . Describing the relationship between each component, the second slide plate 147
A first dovetail groove 151 extending in the x direction is provided on the lower surface of the dovetail 146 , and this dovetail groove 151 fits into the first dovetail 146 . The second slide plate 147 can slide on the first slide plate 145 in the x direction. Next, a second dovetail 152 extending in the y direction is provided on the upper surface of the second slide plate 147. Y-direction slide presser block 148,1
49 has a second dovetail that fits into the second dovetail 152.
A dovetail groove 153 (the dovetail groove of the presser block 149 is not shown) is provided, and the y-direction sliding presser blocks 148 and 149 are slidable in the y-direction relative to the second slide plate 147. In this state, the x-direction slide presser block 1
By displacing 50 in the x direction, the mutual spacing between the two sliding presser blocks 148, 149 in the y direction can be changed. That is, in the state shown in FIG. 13, each presser block 148, 149, 150 is in close contact with the inner surface of the seaming portion of the inner box 1, which has an advantageous effect on the seaming process to be described later. By displacing the slide presser block 150 in the x-direction toward the front in the figure, the distance between the slide presser blocks 148 and 149 in the y-direction is reduced, which is advantageous for attaching and removing the inner box 1 as a workpiece. be. Furthermore, a portion including the illustrated second slide plate 147 and a symmetrical portion, not illustrated, are slidable with respect to the first slide plate 145. In the state shown in FIG. 13, the presser blocks 148, 149, 150 held by the illustrated second slide plate 147 are
is positioned on the top plate 12 side of the inner box 1, and the other presser block (not shown) is adjusted by sliding so that it is positioned on the bottom plate 13 (FIG. 1) side of the inner box 1. This means that even if the dimension in the height direction of the side plate 11 shown in FIG. This means that even if they occur, they can be dealt with appropriately.

In addition, the mounting block 1 as shown in FIG.
44 has various advantages as mentioned above, and is particularly advantageous in the case of box 3 in FIG. 3. However, if such advantages are not desired, box 3 in FIG. It may be a simple box shape, except in the case of In addition, there are cases where the mounting block 144 does not need to be in close contact with the entire seamed part of the inner box 1 as a workpiece, and in such a case, the mounting block 144 may be simply divided and moved in the x direction. It is configured so that the dimensions can be changed in the y direction as well.
The mounting block 144 may be brought into close contact with at least only the corner portion of the tightened portion.

Next, the configuration related to the seaming device will be described. As described above, this seaming device includes a mold section, a press device section, and a position adjustment device section.

FIG. 14 is a perspective view showing the main parts of the seaming device. The structure related to the mold portion will be explained with reference to FIG. 14 and FIGS. 9 to 11. The molds necessary for performing seaming are a seaming mold 110 and a presser mold 111, which are paired with each other as shown in FIG. This pair of seaming mold 110 and presser mold 111 is used to seam a workpiece such as the inner box 1 shown in FIG. 1 on three sides, so in order to simultaneously perform the seaming, , it can be seen that three pairs are required. That is, the seaming mold 110 includes an upper seaming mold 110a, a right seaming mold 110b, and a left seaming mold 11.
Contains 0c. Further, the presser die 111 also includes an upper presser die 111a, a right presser die 111b, and a left presser die 111c. In addition, inner box 1 in Figure 1
For workpieces like this, the top plate 12 side and the bottom plate 1
It is necessary to perform seaming on three sides, so in order to do this at the same time, such a mold is required for each side, but since their configuration is the same, The following description will be made on one side only.

Three seaming molds 110a, 110b, 110
c is arranged in a U-shape and supported on the winding support plate 112. Upper seaming mold 110a
A bottom guide 154 is arranged parallel to the bottom guide 154 and is also supported on the support plate 112 for tightening. Of these, the upper seaming die 110a and the bottom guide 154 are fixedly provided on the seaming support plate 112. On the other hand, the right side seaming die 110b and the left side seaming die 110c are provided so as to be slidable in the y direction, and this sliding is achieved with the stepped portions 155 and 156 fitted into the guide grooves 157 and 158, respectively. be done.

A presser support plate 113 is arranged parallel to the seam-tightening support plate 112. This presser support plate 113 includes three connecting members 114a,
114b and 114c are supported, and among these, the upper connecting member 114a is fixedly provided on the presser support plate 113. The right side connecting member 114b and the left side connecting member 114c are the presser support plate 11.
For this purpose, a dovetail 168 is slidably fitted in a dovetail groove 167 extending in the y direction on the presser support plate 113. These right and left connecting members 114
b, 114c, both connecting members 114b, 1
It is controlled by the rotation of both screws 159 that are screwed together in series with 14c. Both screws 159 are provided with male screw portions having mutually different directions, and rotation in one direction moves the connecting members 114b, 114c toward each other, and rotation in the other direction moves them away from each other. The rotation of both screws 159 is configured to be driven by a y-direction adjustment motor 122 (FIG. 9).

The upper connecting member 114a extends beyond the upper end surface of the support plate 112 for seam-tightening.
12 and extending toward the front side as shown in FIG. 14. In addition, the right side and left side connecting members 114b, 1
14c is provided so as to pass through the through holes 160b and 160c provided in the support plate 112 for tightening and extend toward the front side of the support plate 112 for tightening as shown in FIG. This connecting member 114a,
Upper presser molds 111a, 111b, and 111c are respectively locked at the tips of 114b and 114c. These presser molds 111a, 111b, 1
11c are connecting members 114a, 114b,
114c, and this movement in and out is performed by presser cylinders 117a and 117, respectively.
b, 117c.

The aforementioned right and left side seaming molds 110b, 1
10c are right and left connecting members 114, respectively.
b, 114c in the y direction. To this end, dovetail grooves 161 are formed in the seaming dies 110b and 110c, and dovetails 162 that fit into the dovetail grooves 161 are provided in the connecting members 114b and 114c. Note that the dovetail groove 161 and the dovetail 162 are slidable, and this allows the closing dies 110a, 110b, 110c to approach or separate from the presser dies 111a, 111b, 111c, i.e., by the operation described below. This allows tightening operation.

The tightening cylinder 115 is fixed to the presser support plate 113, and its plunger 116 passes through the presser support plate 113, and its end is fixed to the presser support plate 112. Therefore, by driving the seaming cylinder 115, the presser support plate 113 and the seaming support plate 112 are brought closer to or separated from each other. Accordingly, the presser molds 111a, 111b, 111c are supported by the presser support plate 113 via the connecting members 114a, 114b, 114c.
It will be understood that the seaming dies 110a, 110b, and 110c supported by the seaming support plate 112 approach or separate from each other. Accordingly, the workpiece is tightened.

As best shown in FIGS. 9-11, three adjustment rods 120 are arranged extending in the x direction. This adjustment rod 120 constitutes a double-threaded screw having male threaded portions having mutually different directions formed at each end. These three adjustment rods 120 are simultaneously rotated by an x-direction adjustment motor 121. The adjustment rod 120 only passes through the tightening support plate 112 and does not apply any mechanical restraining force, but the adjustment rod 120 does not apply any mechanical restraining force to the presser support plate 113.
In the upper right, lower right, and upper left portions of FIG. 1, male screw portions having mutually different directions that constitute both screws are screwed together. Therefore, by rotating the adjustment rod 120 in one direction, the left presser support plate 113 and the right presser support plate 113 shown in FIGS. 9 and 10 approach each other, and the adjustment is performed. They are separated from each other by rotation of the rod 120 in the other direction. Each movement of the presser support plate 113 is performed by the seaming cylinder 11 which is substantially held therein.
5. Connecting members 114a, 114b, 114c, support plate 112 for seaming, seaming mold 110
a, 110b, 110c, and presser mold 111
It will be appreciated that movement of elements such as a, 111b, 111c in the same direction is also involved. Such an operation is realized by the characteristic configuration of the present invention. Although a through hole 120a is shown in the lower left portion of the tightening support plate 112 in FIG. 11, no adjustment rod is disposed there.
This is to allow the mounting base 105 or 106 to pass through.

Note that, instead of the x-direction adjustment motor 121 and the adjustment rod 120 for driving the presser support plates 113 to approach and separate from each other, for example, hydraulic cylinders may be used. In this case, the piston rod of the hydraulic cylinder may be made to act directly on the presser support plate 113. This method of using a hydraulic cylinder has the advantage that there is no fluctuation due to the gap of the screw of the adjusting rod 120, and there are fewer failures.
Furthermore, since the pressure source used for the seaming cylinder 115 can also be used, it is advantageous in terms of cost.

In the above-described configuration, the overall operation of the container manufacturing apparatus 100 will be described below.

First, the inner box 1 shown in FIG. 1 is assumed as a workpiece. Therefore, a mounting block 144 suitable for the inner box 1 as the workpiece is prepared and mounted on the first mounting base 105 and the second mounting base 106. Then, the container 1 before being tightened is attached to this attachment block 144. At this time, each dimension adjustment described with reference to FIG. 13 is performed manually or automatically as necessary. Next, a right side winding and tightening mold 110 that fits the inner box 1 as this work
drive the y-direction adjustment motor 122 so as to realize the distance between
The distance between the right side connecting member 114b and the left side connecting member 114c is adjusted manually or automatically. Once such preliminary adjustment is completed, the workpieces are sequentially brought to the seaming position 104 by operating according to the procedure described with reference to FIG.

As mentioned above, the workpiece is in the tightening position 104.
The operation realized by the characteristic configuration of the present invention proceeds when brought to . That is, x
The direction adjustment motor 121 is driven, and the left and right presser support plates 113 and the elements substantially held therein approach each other. In addition, at this time, the presser molds 111a, 111b, and 111c are attached to the projecting parts 41 and 42 of the inner box 1 as the workpiece, respectively.
(Fig. 6) is in a retracted state to allow passage. When the projecting parts 41 and 42 are passed through, the presser cylinders 117a and 117
b, 117c are presser molds 111a, 111b, 1
It operates to project 11c. At this time,
The presser molds 111a, 111b, 111c are the inner box 1
It abuts on the corner portion of the side plate 11 and the first projecting portion 41 . At the same time, the x-direction adjustment motor 121 is controlled to stop, and the second projecting portion 42 of the inner box 1
The tips of the seaming molds 110a, 110b, 110
It is brought to a position close to c. Then, the seaming cylinder 115 is driven, and the seaming mold 11
0a, 110b, 110c are the presser molds 111a,
111b and 111c, and seaming portions 43 as shown in FIG. 7 are formed on the top plate 12 side and the bottom plate 13 side of the inner box 1, respectively.

Next, the hydraulic cylinders 117a, 117b, 11
7c drives the holding molds 111a, 111b,
111c is retracted to allow passage through the seaming portion 43 described above. Then, the x-direction adjustment motor 121 is driven to rotate the adjustment rod 120 in the opposite direction, thereby separating the left and right presser support plates 113 and the elements substantially held therein from each other. Then, the inner box 1 that has been tightened is transferred from the tightening position 104 to the transfer direction switching position 103,
Since the subsequent operation has been described with reference to FIG. 8, the explanation will be omitted.

The seaming device of the container manufacturing device 100 described above includes:
It is designed to tighten all three sides of the container at the same time. Therefore, the present invention is applicable not only to the inner box 1 shown in FIG. 1 but also to works such as the inner box 2 shown in FIG. 2, for example. However, in the case of a workpiece that needs to be seamed on all four sides, such as box 3 in FIG. 3, it is not possible to seam it all at once using this container manufacturing apparatus 100. For this purpose, pairs of spooling dies and presser dies must be provided on the top, bottom, left and right. Regarding this, the 15th
This will be described below with reference to the figures.

FIG. 15 is a layout diagram of a mold when seaming is performed on four sides. In FIG. 15, a pair of spooling dies and presser dies are shown by one block. This block includes an upper block 201, a lower block 202, a right block 203 and a left block 204. The arrangement of each block 201, 202, 203, and 204 is selected so that one end surface of each abuts the inner surface of another block adjacent thereto, and the abutting portion is configured to be slidable. It is said that

By doing the above, it is possible to change the shape and dimensions of the rectangle formed inside, for example, as shown by the imaginary line, regardless of the dimensions of the four-sided seamed part, which is advantageous. can be adapted.

As described above, the present invention has been described with reference to several embodiments. However, it should be pointed out that the scope of the present invention is not limited to these examples, but is limited only by the scope of the claims set forth above.

For example, although the seaming device described in the embodiment can simultaneously perform seaming on three or four sides, the present invention is not limited to this. In other words, it must be understood that the scope of the present invention also includes a device that only has the function of seaming only one side. In this case, for example, in order to perform seaming on three sides, the process may be performed in three steps.

Furthermore, by changing the shapes of the tightening mold and the presser mold, it is possible to manufacture not only prismatic containers but also cylindrical containers. At this time,
If one of the paired molds, for example, the presser mold, is divided in the circumferential direction, the circular seaming portions can be processed simultaneously.

In addition, in the case of a workpiece having the shape of an overhang as shown by the imaginary line in FIG. good.

Furthermore, in the embodiment shown in FIGS. 8 to 14, one cylinder 115 drives three seaming dies 110a, 110b, and 110c via a seaming support plate 112. However, a cylinder may be provided for each seaming die.

As described above, according to the present invention, containers can be manufactured using already painted metal plates, so there is no need for a complicated painting process, and especially for large containers, Since the transportation process for the coating process can be omitted, the efficiency of manufacturing the coating container can be improved. Further, since both of the mutually opposing wall surfaces can be seamed simultaneously, the efficiency of container manufacturing can be improved. In addition, even if the distance between the mutually opposing wall surfaces mentioned above is changed or an error occurs in the distance dimension, the distance between the molds can be adjusted freely, so it can be applied to workpieces of various sizes. . This is particularly advantageous for high-mix, low-volume production and large-sized workpieces.

[Brief explanation of the drawing]

1 to 3 are perspective views showing examples of containers advantageously manufactured by the apparatus of the present invention.
FIG. 4 shows an enlarged view of a conventional joint. FIGS. 5 to 7 are enlarged views for explaining the seaming process as a method that can advantageously be manufactured using a painted metal plate. 8 to 14 are diagrams for explaining a metal plate container manufacturing apparatus according to an embodiment of the present invention, in which FIG. 8 is a schematic layout diagram, FIG. 9 is a plan view, and FIG. Front view, Figure 11 is the line of Figure 9
12 is a perspective view showing a preferred embodiment of the transmission mechanism for moving the mounting base;
FIG. 13 is a perspective view showing a part of a preferred embodiment of the mounting block, and FIG. 14 is a perspective view showing the main parts of the tightening device. FIG. 15 is a diagram for explaining another embodiment of the present invention, and is a layout diagram of a mold when seaming is performed on four sides. In the figure, 110, 110a, 110b, 1
10c is a seaming mold, 111, 111a, 111
b, 111c is a presser die, 112 is a support plate for seaming, 113 is a support plate for presser, 11
4, 114a, 114b, 114c are connecting members;
115 is a tightening cylinder, 116 is a plunger, 117, 117a, 117b, 117c is a presser cylinder, 120 is an adjustment rod, 144 is a mounting block, 1, 2, 3 are boxes, 11, 23, 3
1 is a side plate, 12, 32 is a top plate, 13, 33 is a bottom plate, 21 is a main plate, 41 is a first overhang, 42, 42
a is the second projecting portion, 43 is the seaming portion, and W is the workpiece.

Claims (1)

[Claims] 1. First metal plate 11 constituting the first wall surface of the container
and a second metal plate 12 constituting a second wall surface that intersects with the first wall surface at one end edge of the first wall surface.
and a third metal plate 13 that constitutes a third wall face that faces the second wall face and intersects with the first wall face at the other edge of the first wall face, the first metal plate 11 and the third The container is manufactured by joining the mutual corner portions of the second metal plate 12 and the third metal plate 13 to each other, wherein each of the first metal plate 11 and the second metal plate 12 The first end edges to be joined and the second end edges to be joined of the first metal plate 11 and the third metal plate 13 are overlapped with each other, and the first end edges that are overlapped with each other are overlapped with each other. A first projecting portion 41 extends in the direction in which the second wall surface extends, and a second projecting portion extends from the edge of the first projecting portion 41 in the direction in which the first wall surface extends.
The mutually overlapping second end edge portion includes a third overhang portion 41 that overhangs in the direction in which the third wall surface extends, and the third overhang portion 41 includes an overhang portion 42 or 42a. including a fourth projecting portion 42 or 42a projecting in the direction in which the first wall surface extends;
The second overhanging portion 42 or 42a and the fourth overhanging portion 42 or 42a are each tightened to form the first metal plate 11 and the second metal plate 1.
2 and the third metal plate 13, the apparatus comprises: a first set forming a pair for applying seaming to the second projecting portion 42 or 42a; a second set of seaming molds 110 and presser mold 111 forming a pair for applying seaming to the fourth projecting portion 42 or 42a; a first press device 115 for bringing the first set of seaming molds 110 and presser mold 111 close to each other; a second press device 115 for bringing the second metal plate 12 and the third metal plate 13 closer to each other; and a pair of the seaming die 110 and the presser foot to accommodate changes in the distance between the second metal plate 12 and the third metal plate 13; means 120 for holding the distance between the first set of molds 111 and the second set of molds 111 in an adjustable manner; At the inner corner side where the first metal plate 11 and the third metal plate 13 intersect,
A container manufacturing apparatus made of a metal plate, comprising a pair of mounting blocks 144, each of which supports the seaming portion and whose spacing between them is adjustable. 2 The first set of presser molds 111 is on one side of the first overhanging portion 41 and is on one side of the second overhanging portion 42.
Alternatively, the first set of seaming molds 110 is pressed from the tip edge of the second projecting portion 42 or 42a. The first set of seaming molds 110 are arranged to apply seaming to the second projecting portion 42 or 42a, and the first seaming mold 110 is connected to the first seaming support plate 1 disposed on the outside of the second wall surface.
12, and the first set of presser molds 111 is supported by a first presser support plate 1 disposed in a position to sandwich the first seaming support plate 112 between the first set of presser molds 111 and the second wall surface.
13 to the first and second overhang portions 41, 42
or 42a, the first press device 115 is configured to bring the first seaming support plate 112 and the first presser support plate 113 close to each other. Similarly, the second set of presser molds 111 is formed on one side of the third overhanging portion 41 and faces opposite to the direction in which the fourth overhanging portion 42 or 42a extends. The second set of seaming dies 110 presses from the tip edge of the fourth overhanging portion 42 or 42a to tighten the seaming on the fourth overhanging portion 42 or 42a. The second set of seaming molds 110 are arranged to apply the second seaming support plate 1 disposed on the outside of the third wall surface.
12, and the second set of presser molds 111 is supported by a second presser support plate 1 disposed in a position to sandwich the second seaming support plate 112 between the second set of presser molds 111 and the third wall surface.
13 to the third and fourth overhanging portions 41, 42
or 42a, the second pressing device 115 is configured to bring the second seaming support plate 112 and the second presser support plate 113 close to each other. act on,
A metal plate container manufacturing apparatus according to claim 1. 3 The seaming mold 110 and the presser mold 111
The means for adjusting the distance between the first set of parts and the second set of parts is the first winding support plate 112 and the first presser support plate 113.
and the set of the second seaming support plate 112 and the second presser support plate 113 in a freely displaceable manner. The metal plate container manufacturing apparatus according to claim 2, wherein the distance is adjusted by rotating the adjustment rods 120 in forward and reverse directions, which are formed at both ends. 4. The container has a shape in which the first wall surface includes at least three interconnected planes, and the first metal plate 11 is bent by at least two bending lines. 2 metal plate 1
2 and the third metal plate 13 on at least three sides thereof, the first set of the seaming mold 110 and the presser mold 11
1 are arranged in relation to at least three sides of the second metal plate 12, and the first set of presser molds 111 move in a direction in which the second wall surface extends and intersects the first wall surface. Similarly, the second set of seaming mold 110 and presser mold 11
1 are arranged in relation to at least three sides of the third metal plate 13, and the second set of presser molds 111 move in a direction in which the third wall surface extends and intersects the first wall surface. A metal plate container manufacturing apparatus according to claim 2 or 3, which is made possible.