JPH05172281A - Duct assembling method and seam joint structure of duct - Google Patents

Abstract

PURPOSE:To make serial assemblies and automated processing together with plate preparation and folding of a female and a male seam part by coupling together an upper and a lower plate and a left and a right side plate automatically, and assembling a duct. CONSTITUTION:In assembling a duct 1, a male seam part 5 formed by folding an upper and a lower plate 2 at the left and right edges is forcedly fitted by pressure into a female seam part 11 formed by folding a left and a right side plate 3 at the upper and lower edges, and they are detained and the plates 2 and the side plates 3 are coupled together to form a framing structure. Therein a supporting projection 12 protruding outward at the duct 1 is formed at the female seam part 11, and locational coordination is generated by a left and a right roller 21 while the plates 2 and side plates 3 are transported, and the male haze part 5 is fitted by pressure into the female seam part 11 by an upper and a lower pressure roller 22 supporting the supporting projection 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a duct which is a wind passage in an air conditioner or the like by an automated device, and a seam joint structure of the duct.

[0002]

2. Description of the Related Art Conventionally, in this type of rectangular duct, upper and lower plates arranged vertically and left and right side plates respectively are formed at respective corner portions which are end edges to which they are connected. It is assembled and assembled by a seam joint. Examples of the seam joint include, for example, Japanese Utility Model Publication No. 50-17069, Japanese Utility Model Publication No. 51-53448, and Japanese Utility Model Publication No. 55-57583.
No. 58, No. 58-127279, No. 59
As described in Japanese Patent No. 7984, Pittsburgh,
Button punches, glove (flat shell), corner glove (turtle shell), vertical and double vertical mesh, etc. by direct meshing with each other, flat steel reinforcement Yeah
There is an angle-reinforcing vertical hook or the like that is joined by a rivet.

According to these joint structures, the upper and lower plates and the left and right side plates are formed with a bent joint having a predetermined meshing shape, and are forcedly fitted together to form an integral structure. It can have a hollow structure.

That is, with such a seam joint,
When assembling the upper and lower plates and the side plates, in order to forcefully insert and engage the male structure seam in the female structure seam, after aligning them, it is hit from the outside with a hammer or the like, It is configured by engaging with each other and further by riveting.

[0005]

However, since the impact from the outside by this hammer or the like is completely manual work, the degree of external damage caused by the skill of the worker is different, which causes a large difference in appearance. It is a thing.

In order to solve such a point and to automate the assembling, for example, while setting the left and right side plates themselves so that the seam portion of the female structure formed at the upper end is located on the long arm base, Assemble by arranging the upper and lower plates such that the male structure formed at the side end matches the opening of the female structure, and forcibly pressing from above the arm base. An automatic assembling machine is provided.

According to the automatic assembler of this arm structure, the side plate itself must be set on the arm base. Therefore, if the duct to be assembled becomes long, the arm base itself must be lengthened accordingly. As the length of the arm stand increased, the height of the arm stand itself had to be increased due to its own weight. for that reason,
If the inner diameter of the duct itself is low, it will not only be impossible to set it on the arm stand, but it will be even more difficult to set the material and take out the completed duct after the press if it is a long one. That would be extremely troublesome.

Moreover, in constructing such a duct, the upper and lower plates and the left and right side plates are cut into a desired shape by a cutting machine using a computer, and a wide steel plate material is rolled on the side edges of the respective cut material plates. A forming type seam folding machine is used to form a seam having a predetermined shape, but in recent years, almost all of the seams have been automated. Such automation enables efficient planing work, prevents waste of material, and dramatically improves the efficiency of these works. In the above, the fact that the work is performed manually by the worker is a major bottleneck because a series of continuous automation cannot be performed.

Therefore, the present invention has been made in view of the existing circumstances as described above, and the upper and lower plates having the joints for fitting and fitting the male and female joints, and the left and right plates. The side plates can be automatically coupled to each other for assembly, and the assembly can be carried out continuously while being carried, so that the efficiency of the assembly work can be dramatically improved, and by this, A method of assembling a duct that allows unmanned production of the duct by automatically processing a plate from a steel plate material, forming a male and female seam, and fitting the seams together automatically. The purpose of the present invention is to provide a joint structure.

[0010]

In order to achieve the above-mentioned object, in the duct assembling method according to the present invention, the upper and lower plates 2 having the male seams 5 on the left and right edges and the male seams 5 are provided. When assembling the duct 1 by the left and right side plates 3 having the female claws 11 at the upper and lower edges, the supporting projections 12 projecting to the outside of the left and right side plates 3 are formed on the left and right side plates 3 themselves. While simultaneously transporting both the plate 2 and the left and right side plates 3,
Due to the relative movement between the two 2, 3, the female of the left and right side plate 3 is positioned above the opening of the engaging recess 13 of the seam 11, and the ends of the male seam 5 of the upper and lower plates 2 are positioned next. The left and right side plates 3 themselves are supported by appropriately mounting the support projections 12 of
When the left and right side plate 3 is supported, the upper and lower plates 2 themselves are pressed from above to forcibly engage the male joint portion 5 with the female joint portion 11.

At the time of this assembly, the upper and lower plates 2 and the left and right side plates 3 are moved relatively to each other so that the male and female parts 5 and 1 are joined together.
A pair of right and left alignment rollers 21 that correspond to 1 and 1 are arranged on the transport start side in the transport direction, and
A pair of upper and lower pressing rollers 22 that press-engage the male claw portion 5 and the female claw portion 11 may be arranged on the conveyance end side in the conveyance direction.

In the duct joint structure according to the present invention, the upper and lower plates 2 having the male joint portion 5 on the left and right edges, and the female joint portion 11 into which the male joint portion 5 is inserted and engaged. In the duct 1 assembled by the left and right side plates 3 at the upper and lower edges, the female seam portion 11 is formed with a support projection 12 that projects outward of the duct 1 to be framed.

Further, the support projection 12 can be constructed as the female seam portion 11 itself which is formed outside the duct 1.

The male claw 5 is provided with a male protrusion 7 projecting upward and downward from the duct 1 to be framed, and a female claw 11 is formed.
The female projecting portions 14 projecting to the left and right sides of the duct 1 to be framed can be formed in the.

[0015]

In the method of assembling the duct according to the present invention and the seam joint structure of the duct, the supporting projection 12 formed on the female seam portion 11 so as to project to the outside of the duct 1 to be framed,
When the male and female parts 5 of the upper and lower plates 2 are press-loaded into the female part 11, the left and right side plates 3 themselves are supported and the escape of the left and right side plates 3 is prevented during the press-fitting. The male inside 11 allows the forced loading of the seam 5.

A support protrusion 12 protruding outward of the duct 1.
Supports the left and right side plates 3 themselves on the outside of the duct 1, and engages the female part 11 with the male part 5 for engaging.
The upper and lower plates 2 by the pressing action from the outside of the framed duct 1
By pressing and urging itself, there is no means or member for supporting the upper and lower plates 2 and the left and right side plates 3 in the duct 1, and the duct 1 can be assembled without being restricted by the size thereof.

The male projecting portion 7 of the male claw portion 5 and the female projecting portion 14 of the female claw portion 11 respectively project outside the duct 1.
At the time of assembly, the relative alignment movement between the upper and lower plates 2 and the left and right side plates 3 by the alignment roller 21 and the pressing engagement between the male and female seams 5 and the female seams 11 by the pressing roller 22 are performed. The upper and lower plates 2 and the left and right side plates 3 are efficiently coupled to each other.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the drawings is a duct having a substantially rectangular cross section, and the duct 1 is located above and below. The upper and lower plates 2 and the left and right side plates 3 located on the left and right sides are joined to each other by fitting the female female part 11 and the male male part 5 of the female structure formed on these side edges. It was assembled.

Both the upper and lower plates 2 and the left and right side plates 2 are
A material plate having a predetermined length and width obtained by plate-cutting from a steel plate material corresponding to the duct 1 which is set to a predetermined width and height and is framed. In the embodiment shown in the drawings, Male and female seams 5 are formed on the left and right edges of the upper and lower plates 2, and female seams 11 are formed on the upper and lower edges of the left and right side plates 3.

As shown in FIGS. 1 and 2 (1) to (4), the male seam portion 5 is formed by bending the left and right edges of the upper and lower plates 2 substantially orthogonally to the upper and lower plates 2 themselves. In the bent part,
The engaging projections 6 projecting inward or outward are arranged at appropriate intervals.

Alternatively, as shown in FIGS. 2 (5) to (8), the left and right edges of the upper and lower plates 2 are projected to the outside of the duct 1 with respect to the upper and lower plates 2 themselves, for example, upward or downward thereof. A male projecting portion 7 bent in a letter shape is formed, and the end of this male projecting portion 7 is extended as it is so as to be positioned inward at the time of construction, and the extended portion projects inward or outward. The engaging projections 6 are arranged at appropriate intervals.

On the other hand, the female claw portion 11 is provided with a supporting projection 12 which projects outwardly when the duct 1 is framed, and the male claw portion 11 is positioned inside or outside. It has an engaging recess 13 into which the part 5 is fitted and engaged. As will be described later, the support protrusion 12 is a roller or other predetermined support means (2) during automatic assembly.
2) The left and right side plates 3 are supported by being placed on the upper side and are bent together with the engaging recesses 13.

The supporting projection 12 shown in FIGS. 1, 2 (1) and 2 (5) is positioned substantially corresponding to the opening surface of the engaging recess 13 and projects outward in a substantially U-shaped cross section. Is something
At the time of connection with the upper and lower plates 2, it is located along the plate surface of the upper and lower plates 2.

The supporting projection 12 shown in FIGS. 2 (2) and 2 (6).
Is located substantially corresponding to the bottom of the engaging recess 13 and projects outward in a substantially U-shaped cross section.
At the time of coupling with, it is positioned on the inner side of the duct 1 with respect to the upper and lower plates 2.

In the example shown in FIGS. 2 (3) and 2 (7), the female part 11 is located outside the duct 1 so that the female part 11 itself serves as the support projection 12. By the outer surface of the bottom of the engaging recess 13, it is placed on the supporting means (22) during automatic assembly.

The supporting projection 12 shown in FIGS. 2 (4) and 2 (8).
Is a double-folded upper and lower edge of the left and right side plates 3 on the outside of the left and right side plates 3, and has a thickness equivalent to about four of the thickness of the material of the left and right side plates 3 itself. Formed as a crushed protrusion having.

Further, as shown in FIGS. 2 (5) to (8), the upper and lower edges of the left and right side plates 3 are projected outwardly of the duct 1, for example, above or below the left and right side plates 3 themselves. A U-shaped female protrusion 14 may be formed, and the female protrusion 14 includes the support protrusion 12 and the engagement recess 1.
It is bent together with 3. The female projecting portion 14 is arranged in parallel with the male projecting portion 7 so as to be positioned outside the male projecting portion 7 to facilitate the alignment of the upper and lower plates 2 and the left and right side plates 3 during automatic assembly. Can be made

The female claw portion 11 is not limited to the shape and structure shown in the figure, and is framed so as to be placed on the above-mentioned supporting means (22) during automatic assembly. It suffices if the supporting projections 12 projecting to the outside of the duct 1 are provided, and the upper and lower edges of the left and right side plates 3 are bent, or in some cases, although not shown, they can be welded. Can be formed.

Next, to explain an example of the assembling method, referring to FIG. 3, in the automatic assembling machine, while the upper and lower plates 2 and the left and right side plates 3 are both conveyed, the male seams 5 at the respective corners thereof. And the females are provided with respective rollers which engage these 5, 11 after aligning the seams 11.

That is, while the upper and lower plates 2 and the left and right side plates 3 are being conveyed at the same time, the female claws 11 of the left and right side plates 3 are opened above the opening of the engaging recess 13 by the relative movement between the two. The male of the upper and lower plates 2 locates the end of the seam 5 and then
The right and left side plates 3 themselves are supported by appropriately mounting the support projections 12 of the left and right side plates 3, and when the left and right side plates 3 are supported, the upper and lower plates 2 themselves are pressed from above, and the male fitting portion 5 The female is forcibly engaged in the seam 11.

For this reason, in the automatic assembly machine, the upper and lower plates 2 and the left and right side plates 3 are moved relatively to each other, and the male fitting portion 5 is moved.
A pair of right and left alignment rollers 21 for matching the female and the female joint 11 are arranged on the transport start side in the transport direction, and the male female part 5 and the female female part 11 are pressed and engaged. The pressing roller paired in the upper and lower direction is arranged on the conveyance end side in the conveyance direction.

The positioning rollers 21 are supported so as to be rotated with their outer peripheral surfaces facing sideways, one of which is located outside the duct 1 in which the upper and lower plates 2 themselves are framed. On the other hand, the other side presses the left and right side plates 3 inwardly as well.
Between them is relatively moved in the left-right direction. The relative movement between the two 2 and 3 at this time is, as shown in the figure, the male protrusion 7 of the upper and lower plates 2 and the support protrusion of the left and right side plates 3. Part 12
By pressing between the outer part and each other, it is possible to efficiently perform the alignment between the close parts. Of course, the pressing bias position is not limited to the illustrated example, and the upper and lower plates 2
It is also possible to change the side edge on the other side, or the main body portion of the left and right side plates 3, etc.

On the other hand, both pressing rollers 22 are supported so as to be rotated with their outer peripheral surfaces facing upward and downward, and the lower ones are supported to support the female claws 11 on the left and right side plates 3. By contacting the lower surface of the portion 12, the left and right side plates 3
It supports itself, and the one arranged above urges the upper and lower plates 2 themselves downward so as to push the male projecting portion 7 of the upper and lower plate 2 into the engaging recess 13 of the female seam 11. ing. At this time, the pressing force is applied to the upper and lower plates 2 as shown.
Because of the upper side surface of the male protrusion 7, the engagement protrusion 6 can be reliably pressed and engaged in the engagement recess 13. Needless to say, the pressing and biasing position is not limited to the example shown in the figure, and the male and female members in the upper and lower plates 2 may be located in the vicinity of the male fitting portion 5 or the upper and lower plates 2.
It is also possible to change it so that it is the body part of the.

Whether the alignment roller 21 or the pressure roller 22 has a flat outer peripheral surface, it has a groove portion into which the male protrusion 7 or the support protrusion 12 fits. It may be one,
As for the number, a plurality of them may be arranged continuously.

The automatic assembling machine is a stationary type that is fixedly installed in a factory or the like, and is movable when the upper and lower plates 2 and the left and right side plates 3 are assembled in a knockdown manner at the installation site of the duct 1. It can be portable.

Further, although not shown, it is needless to say that the duct 1 to be framed can be implemented not only when it is linear but also when it is arcuate.

[0037]

The present invention is configured as described above,
Therefore, the upper and lower plates 2 having a seam joint for fitting and integrating the male and female seam parts 5 and 11 to be combined.
The left and right side plates 3 can be automatically combined with each other for assembly, and the assembly can be performed automatically while continuously transporting both the upper and lower plates 2 and the left and right side plates 3 to dramatically improve the efficiency of assembly work. It is possible.

Moreover, by this automatic assembly, the upper and lower plates 2 and the left and right side plates 3 are stripped from the steel plate material, the male and female seams 5 and 11 are formed, and the male and female seams 5 and 11 are mutually formed. It is possible to automatically perform a series of fitting processes between the pipes, and it is possible to automatically and unmannedly manufacture the duct 1.

That is, according to the present invention, when the duct 1 is assembled, the male seam portion 5 formed by bending the left and right edges of the upper and lower plates 2 and the female seam portion formed by bending the upper and lower edges of the left and right side plates 3 are assembled. When forcedly inserted into 11 and engaged to form a joint frame between the two and 3, a female protrusion 11 is provided with a support protrusion 12 protruding outward from the duct 1. Every time, while aligning the upper and lower plates 2 and the left and right side plates 3 in the left and right direction,
Since the male claw portion 5 is pressed into the female claw portion 11 from above and below so as to support the supporting projection 12, the members 2, 3 are firmly attached to the outside of the duct 1 to be framed. Since they can be supported, they are not retracted even by the pressing action applied between the two and the two, so that the two and the three are reliably coupled.

Further, the upper and lower plates 2 themselves are pressed and urged by the pressing and urging action of the positioning roller 21, the pressure roller 22 and the like from the outside of the duct 1 to be framed, so that the upper and lower plates 2 are placed inside the duct 1. Since it is not necessary to arrange means, members, etc. for supporting the left and right side plates 3, the size of the duct 1 to be assembled is not limited, and the automatic assembly of them is possible.

Further, since the male projecting portion 7 of the male seam portion 5 and the female projecting portion 14 of the female seam portion 11 respectively project to the outside of the duct 1, the upper and lower plates 2 by the alignment roller 21, Relative alignment movement between the side plates 3, male and female seams 5 and females 11 by the pressing roller 22 are engaged by pressing engagement between the seams 7, 14 so that they are sandwiched. Thus, the relative movement between both the upper and lower plates 2 and the left and right side plates 3 and the pressure engagement can be efficiently performed, and the assembling work can be performed extremely efficiently.

Not only that, but also the formation of the support protrusions 12,
Further, the formation of the male protruding portion 7 and the female protruding portion 14, etc., can be easily obtained by the conventionally proposed cold rolling type roll forming method, and the manufacturing and assembling costs are significantly low. It is also possible to

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a duct to be framed.

2 (1) to (8) are cross-sectional views of essential parts showing the shape of the seam joint structure.

FIG. 3 is a schematic perspective view of the automatic assembling machine during assembly.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 duct 2 upper and lower plate 3 left right side plate 5 male seam 6 engaging projection 7 male projection 11 female seam 12 support projection 13 engaging recess 14 female projection 21 alignment roller 22 pressing roller

Claims (6)

[Claims] 1. When assembling a duct by means of upper and lower plates having male and female seams on the left and right edges, and left and right side plates having male and female seams on the upper and lower edges, the outer side of the left and right side plates is Supporting protrusions that project are formed on the left and right side plates themselves, and while the upper and lower plates and the left and right side plates are both conveyed at the same time, the relative movement between the both plates causes the female recesses of the left and right side plates to open above the engaging recesses Then, the male and female ends of the upper and lower plates are positioned, and then the right and left side plates themselves are supported by appropriately mounting the supporting projections of the left and right side plates. A method for assembling a duct, characterized in that the male part is forcibly engaged with the female part by pressing from above. 2. When assembling, the upper and lower plates and the left and right side plates are moved relative to each other so that the male and female seams are aligned with each other, and the pair of left and right alignment rollers are transported in the transport direction. The pressing roller, which is arranged on the start side and which is paired up and down to press and engage the male and female seams, is arranged on the transportation end side in the transportation direction.
The method for assembling the described duct. 3. A duct assembled by male and female upper and lower plates having left and right edges and a male and female side plates having upper and lower edge parts, respectively, into which the female part is inserted. Is a seam joint structure for a duct, characterized in that a supporting projection is formed so as to project outward of the framed duct. 4. The seam joint structure for a duct according to claim 3, wherein the support projection is formed as a female seam itself formed outside the duct. 5. A male projection part is formed with a male projection part projecting above and below a duct to be framed.
The seamed joint structure of the described duct. 6. The female protrusion is formed with a female protrusion that protrudes to the left and right of the duct to be framed.
Either of the ducts has a seam joint structure.