JP3630492B2 - Sheet metal folding machine - Google Patents

Description

[0001]
[Industrial application fields]
TECHNICAL FIELD The present invention relates to a sheet metal folding apparatus used for a tin roof sheet (particularly, an accessory material around an eave).
[0002]
[Prior art]
As shown in FIGS. 6 (a) to 6 (c), the sheet metal used for the tin roof and the like is first bent at the end to form a hull 1 and provided with notches 2 on the left and right sides of the hull 1. Then, the left and right end portions 3 of the notch 2 are extended with a hammer. The reason why the left and right end portions 3 are extended is that, as shown in (d), the portion is further bent (indicated by reference numeral 4) as necessary to form a connecting portion with an adjacent roof plate.
[0003]
[Problems to be solved by the invention]
Conventionally, such folding and stretching of the scissors 1 has been performed manually, that is, by hitting with a hammer. Use scissors when making cuts 2.
[0004]
The task of folding the fold is not particularly painful for a small number of skilled craftsmen. However, in the case where the number of processing is large or in the case of rush work, it has been desired to increase the speed and efficiency more than the manual work. In addition, since the number of skilled craftsmen is gradually decreasing, there is a need for means that can produce high-quality work results in a short time even for inexperienced persons.
[0005]
However, it is considered that it is difficult to construct a mechanism for easily processing a sheet metal with a single device because a plurality of processes are combined in the case of fold folding. In addition, there is a relationship with the work cost, and it is not possible to employ a large press device using a motor or the like.
[0006]
Therefore, an object of the present invention is to simplify the apparatus configuration as much as possible and to complete the helix folding with one operation.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a sheet metal helix folding device according to the present invention comprises:
(1) A main base having a substantially rectangular shape, a sub-base arranged in parallel with the main base, and a substantially rectangular bent substrate having a handle,
(2) The bent board includes an upper plate and a lower plate,
・ At the tip, a movable positioning member is provided to create a gap where a sheet metal can be inserted.
・ Screw the replaceable cutter lower teeth to the left and right ends of the lower plate,
・ Protruding pins to the side in the vicinity of the lower teeth of the cutter,
(3) The main base includes two left and right guide boards,
-At least one of the guide boards is slidable,
・ At the inner tip position, fix the replaceable cutter upper teeth with screws,
-In the vicinity of the upper teeth of the cutter, an elbow guide comprising a double panel having a substantially semicircular cross section for guiding the protruding pin,
The elbow guide has a notch portion for inserting the protruding pin at a rear end position thereof, and a clearance for detaching the protruding pin at a tip position thereof;
(4) The sub-base is provided with guide members for positioning the width of the sheet metal at the left and right positions, and at least one of them can be slid.
[0008]
[Action]
This device moves (semi-rotates) a substantially rectangular bent substrate having a handle along a semicircular elbow guide that guides the protruding pin, thereby cutting the cut portion and folding the helix portion. Bending is performed simultaneously.
[0009]
The main base is a base for slidably fixing the elbow guide, and the sub base is a restraining base when the sheet metal is inserted. In order to facilitate the positioning of the sheet metal, a slidable guide member is also provided on the sub-base.
[0010]
The cutter for cutting the incised part is provided with lower teeth on the bent board that is moved by hand, and upper teeth on the guide board that fixes the elbow guide. When moving the bent board from the bottom to the top, the scissors It is designed to cut on the principle of.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows an example of a helix folding device according to the present invention.
The apparatus includes a main base 10 having a substantially rectangular shape, a sub-base 30 arranged in parallel with the main base 10, and a substantially rectangular bent substrate 40 having a handle 41. To do.
[0012]
First, the configuration of the bent substrate 40 will be described.
As shown in FIG. 2, the bent substrate 40 includes an upper plate 42 and a lower plate 44, and includes an intermediate plate 43 serving as a positioning member at an intermediate portion thereof. The fixing position of the front end portion of the intermediate plate 43 is determined in advance with a positioning bolt 49 so as to create a gap S for inserting a sheet metal.
[0013]
Further, replaceable cutter lower teeth 45 are fixed to both left and right ends of the lower plate 44 with screws. Reference numeral 46 denotes a screw.
[0014]
On the other hand, a lateral projecting pin 47 is provided in the vicinity of the cutter lower teeth 45. In this embodiment, the protruding pin 47 is directly fixed to the upper plate 42. The fixing means for the protruding pin 47 is not limited. The shape of the handle 41 is also free.
[0015]
Next, the main base 10 will be described.
The main base 10 includes two guide boards 14 and 15 on the left and right, and at least one (for example, 15) is slidable. In this example, both are shown as movable. Reference numeral 16 denotes a positioning bolt, and 17 denotes a positioning slit so that the guide substrates 14 and 15 can be fixed at appropriate positions.
[0016]
As shown in FIG. 3, a replaceable cutter upper tooth 18 is fixed to the inner tip position of the guide substrates 14 and 15 with screws. Reference numeral 19 denotes a screw. The guide substrates 14 and 15 can also be constituted by the upper plate P1, the middle plate P2, and the lower plate P3, like the bent substrate 40. The positioning bolt 16 determines the position of the intermediate plate P2 and fixes the three panels P1 to P3.
[0017]
An elbow guide 20 composed of a double panel having a substantially semicircular cross section for guiding the protruding pin 47 is fixed in the vicinity of the cutter upper teeth 18.
[0018]
The elbow guide 20 includes a notch 22 for inserting the protruding pin 47 at the rear end position, and a clearance 24 for detaching the protruding pin 47 at the distal end position. The clearance 24 only needs to have a size that allows the protruding pin 47 to be pulled out.
[0019]
The sub-base 30 includes guide members 31 and 32 for positioning the width dimension of the sheet metal at the left and right positions, and at least one of them is slidable. In this embodiment, both are shown as movable. Reference numeral 36 is a positioning bolt, and 37 is a positioning slit so that the guide members 31 and 32 can be fixed at appropriate positions. It is desirable to provide a certain gap 11 between the main base 10 and the sub base 30. This is to prevent the leading edge of the bent substrate 40 from hitting the sub-base 30.
[0020]
Note that the inner dimensions of the guide base plates 14 and 15 of the main base 10 are the dimensions of the folds to bend. Cutters 45 (lower teeth) and 18 (upper teeth) for cutting the sheet metal are provided at the folding position.
[0021]
Next, the usage method of this apparatus is demonstrated.
In this apparatus, the folding substrate 40 is rotated according to the elbow guide 20 to cut the sheet metal and simultaneously bend the ridge. Therefore, in use, first, the guide pin 47 of the bent substrate 40 is inserted into the notch 22 of the elbow guide 20. When the bent board 40 is placed on the end of the main base 10 with the handle 41 and is slid, the protruding pin 47 is fitted into the notch 22 as it is.
[0022]
In this state, the sheet metal is inserted from the sub base 30 side. Even if inserted appropriately, the leading end of the sheet metal comes into contact with the middle plate 43 of the bent substrate 40 and the middle plate P2 of the guide substrate 15 and stops.
[0023]
From this state, when the handle 41 is moved so as to be lifted as indicated by an arrow A in FIG. 4, the protruding pin 47 is guided by the elbow guide 20 and the bent substrate 40 is rotated. At this time, the cutter lower teeth 45 of the bent substrate 40 and the cutter upper teeth 18 of the guide substrate 15 become scissors to cut the flange portion of the sheet metal L, and at the same time, the tip of the upper plate 42 of the bent substrate 40. The part bends the heel part.
[0024]
When the handle 41 of the bent substrate 40 moves to the sub-base 30 side, the projecting pin 47 reaches the clearance 24 of the elbow guide 20, and the rotation stops here. Now that one operation is completed, this time, holding the handle 41, the protruding pin 47 is pulled out from the clearance 24, and is removed from the sheet metal fitted in the gap S of the bent substrate 40, and one sheet metal is folded. Finish. If the bent substrate 40 is initially set as it is, the next processing can be started. This is a repetition.
[0025]
The number of seconds from the initial setting of the bent substrate 40 to the end of one process is within about 5 seconds. In the conventional work, since the operations of bending, cutting, and extending took about 20 seconds, a satisfactory result is obtained in terms of processing speed. In addition, since non-experts can perform high-quality processing, the burden on skilled workers is reduced, and work during busy times can be handled flexibly.
[0026]
In the above-described embodiment, the middle plate 43 of the bent substrate 40 has been described as being movable. However, only the left and right middle plates P2 of the guide substrate 15 are sufficient for positioning the sheet metal leading portion. Therefore, it is only necessary to provide a clearance S into which the sheet metal can be inserted at the tip of the bent substrate 40. Also, it is desirable to use heavy steel plates for the main base and the sub base so as not to move. However, the shape and material are not limited as long as it can be fixed to the table.
[0027]
In the above embodiment, two elbow guides 20 arranged on the main base 10 have been described. However, in the case of the eaves-and-break wind-integrated helix folding, as shown in FIG. Another elbow guide 21 may be provided side by side so that different width dimensions can be continuously formed. Reference numeral 50 denotes a guide substrate. The guide substrate 50 includes cutter lower teeth (not shown) at both the left and right positions.
[0028]
【The invention's effect】
As described above, according to the folding apparatus according to the present invention, it is possible to complete the helix folding with a single operation while having a simple configuration.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a folding apparatus according to the present invention.
FIG. 2 is a side view showing an example of attachment of cutter upper teeth according to the present invention.
FIG. 3 is a view showing an example of attachment of cutter lower teeth according to the present invention from the side.
FIG. 4 is a diagram illustrating the operation of the folding device according to the present invention from the side.
FIG. 5 is a perspective view showing another arrangement example of the elbow guide according to the present invention.
FIG. 6 is a view showing a conventional folding process.
[Explanation of symbols]
10 Main base 14, 15 Guide board 16, 36, 49 Positioning bolt 17, 37 Slit 18 Cutter upper teeth 19, 46 Screw 20 Elbow guide 22 Notch 24 Clearance 30 Sub base 31, 32 Guide member 41 Handle 40 Bending Substrate 42, P1 Upper plate 44, P3 Lower plate 43, P2 Middle plate 45 Cutter lower teeth 47 Projection pin S Gap

Claims (1)

A main base having a substantially rectangular shape, a sub-base arranged in parallel with the main base, and a substantially rectangular bent substrate having a handle,
The bent substrate includes an upper plate and a lower plate, and includes a movable positioning member at the tip thereof to create a gap into which a sheet metal can be inserted,
At the left and right ends of the lower plate, the replaceable cutter lower teeth are fixed with screws, and side protruding pins are provided in the vicinity of the cutter lower teeth,
The main base comprises two left and right guide boards,
At least one of the guide substrates is slidable, and a replaceable cutter upper tooth is fixed to the inner tip position with screws.
An elbow guide comprising a double panel having a substantially semicircular cross section for guiding the projecting pin is provided in the vicinity of the upper teeth of the cutter, and the elbow guide has a notch for inserting the projecting pin at the rear end position. On the other hand, the tip position is provided with a clearance for detaching the protruding pin,
The sub-base is provided with a guide member for positioning the width dimension of the sheet metal at the left and right positions, and at least one of them can be slid.
A sheet metal folding machine characterized by that.

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