JPS60159289A - Production of steel door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a hollow steel plate by combining a pair of front and rear surface materials, and more specifically, the present invention relates to a method for manufacturing a hollow steel plate by combining a pair of front and rear surface materials. The present invention relates to a manufacturing method for steel plate manufacturing, in which the manufacturing process can be easily automated by integrally forming the tongue piece and the base for reinforcing the hinge portion on the root side.

Conventionally, in order to manufacture a hollow steel plate, the surface material is welded to the front and back of a four-periphery frame that is formed separately from the surface material, and a backbone that supports the surface material is welded into the hollow part, or In addition to filling the core, a separately formed lock mounting tongue is attached to the lock side of the door, and a separately formed hinge reinforcement piece is attached to the root side of the door to withstand the hanging load from the hinge. Since the door was manufactured by attaching a base, the manufacturing process for the door was not complicated, but instead required many types of component parts made of separate parts.Therefore, the manufacturing process and material management were simplified. The drawback is that the manufacturing process cannot be easily automated.

The present invention has been devised based on a completely new concept in view of the above-mentioned circumstances, and its purpose is to frame the four peripheries of the door by using only one of the pair of front and rear surface materials. At the same time, a number of studs are welded to the inner surface of one surface material, and the other surface material is attached to the four circumferences of the one surface material. After gluing or welding to the frame, the other surface material and the stud are welded to form an integrated door, which significantly simplifies the structure of the hollow steel plate main door and its manufacturing process. In addition, it is an object of the present invention to provide a method for manufacturing a copper plate main door that can simplify material management by unifying the constituent members, thereby easily automating the manufacturing process and greatly improving production efficiency.

EMBODIMENT OF THE INVENTION Hereinafter, the manufacturing method of the steel plate main door based on this invention will be described with reference to the embodiment shown in the drawings.

In Figures 1 to 5, reference numeral 1 denotes a hollow steel plate main door, and this steel plate main door 1 is formed into a hollow shape by combining a pair of front and rear surface materials 2 and 3. 4, a large number of studs 5 for reinforcement are welded across the pair of front and rear surface members 2.3. Reference numeral 6 designates a four-circumferential frame portion, 7 a finger grip attached to the lock side, and 8 a hinge attached to the light output side (see the lock in Figures 1 to 3).

By the way, the steel plate main door 1 having the above-mentioned configuration is manufactured by the following steps (see FIGS. 4 and 5).

That is, first, one surface material 2 is cut to a predetermined width and length to form 9 gold sections on the left and right sides &10.
11, a side frame folding forming piece 12 on the lock side and a side frame folding forming piece 13 on the light output side are connected and formed, and the upper and lower side edges 14.1
5, an upper frame forming piece 16 and a lower frame forming piece 17 are connected and formed, and the side frame folding forming piece 12 on the lock side has a lock mounting tongue piece 18 that protrudes vertically oppositely at a predetermined position thereof. 1B is punched and formed. Then, a folding line 19°20.21 is formed on the side frame folding forming piece 12 on the lock side, and a folding part 12a is formed between this folding line 19.20, and an adhesive margin is formed through the folding line 21. 22, and a fold line 21 is also formed on the side frame folding forming piece 13 on the light output side.
24 and 25 are formed, and a folded portion 13a is formed between the folded lines 23 and 24, and an adhesive margin 26 is formed via the folded line 25. In addition, the upper frame forming piece 16 is completely formed with a fold #j27, and the adhesive margin 28 is formed through this fold line 27.
A folding line 29.3'O is formed on the lower frame forming piece 17, and a folding portion 1 is formed between this folding line 29 and the lower edge 15.
At the same time as forming 7aic, glue the adhesive 3 through the fold line 30.
1 (first step).

Next, the side frame folding forming piece 12 on the lock side and the side frame folding forming piece 13 on the light output side. After bending the upper frame forming piece 16 and the lower frame forming piece 17 and integrally forming the four-periphery frame part 6 of the door 1 with only one surface material 2, the door surface part 9 of this one surface material 2 is bent. A large number of studs are planted and arranged on the inner surface at appropriate intervals in the longitudinal direction, and welded by a stud welding method (second step).

Next, the other surface material 3 is cut into predetermined width and length dimensions to form a nasal surface section 9', and its left and right side edges 10', 11 are cut.
The side frame forming piece 12' on the lock side and the side frame forming piece 13' on the light emitting side are connected with each other, and the side frame forming piece 12' on the lock side is formed with a lock mounting notch 32 at a predetermined position. At the same time, a folding line 33 is formed, and a folding part 34 is formed through this folding line 33. A folding line 35 is also formed on the side frame forming piece 13' on the light exit side, and a folding line 35 is formed through this folding line 35. Bending part 3G
(third step).

Further, an adhesive 37 is applied to each of the bonding margins 22, 26, 28, and 31 of the four-periphery frame portion 6 integrally formed with one of the surface materials 2, and the other surface material 3 is adhered to the four-perimeter frame portion 6. In this case, it goes without saying that bath contact may be used instead of the adhesive means. After the other surface material 3 is bonded or welded to the four-periphery frame portion 6 in this manner, the other surface material 3 and a large number of studs 5 are spot welded from the outside to form a hollow steel plate door 1. (Step 4) After that, all you have to do is weld the corners and sand them.

In addition, when the pair of front and rear surface materials 2, 3 and the stud 5 are bath-welded, if the protrusion 56f is formed in the axial direction of the stud 5, stud welding and spot welding can be easily performed.

Further, in the above embodiment, the bent portion 17a was formed on the lower frame forming piece 17 formed on one surface material 2, but the invention is not limited to this. For example, as shown in FIG. As shown, only the bonding margin 38 may be formed and bonded or bath-bonded to the other surface material 3.

In short, since the present invention consists of the steps described above, the steel plate door manufactured by this step is
The four circumferential frame parts are bent and formed integrally with one surface material and are bonded or bonded to the other surface material. The folded parts on the sides create a triple layer structure, and one surface material and the other surface material are reinforced with a large number of studs, so the overall strength is dramatically increased even though it is a hollow steel main door. However, it can be made extremely rigid.For this reason, there is no risk of the door twisting or deforming due to wind pressure when opening and closing, and the hollow part is sealed. Because it is made of There is no need to separately attach the door, and the lock attachment tongue piece, which was attached separately on the lock side, is also integrally formed with one surface material, greatly simplifying the door configuration and manufacturing process. be able to.

Also, since the many studs welded for reinforcement are machined shaft-shaped products, even if the size of the door is different, if the estimated thickness of the hollow part is constant, the same standard products should be used. It is possible to simplify material management by unifying the components. Therefore, according to this manufacturing method,
The manufacturing process of steel plate main doors can be easily automated and the production efficiency can be significantly improved, which has extremely useful practical effects.

[Brief explanation of the drawing]

The drawings show an example of a @4 plate door manufactured by the method of manufacturing a copper plate main door according to the present invention, and Fig. 1 is a front view, and Fig. 2g2 is a line taken along line A-A in Fig. 1. A cross-sectional view, FIG. 3 is a cross-sectional view taken along the same line B-B, FIG. 4 is a developed view of one surface material, No. 50 is a developed view of the other surface material, and FIG. 6 shows another embodiment. A-A#i in Figure 1! FIG. 1... Hollow steel plate main door, 2... One surface material, 3
...Other surface material, 4...Hollow part, 5...Stud, 5a...Protrusion of stud, 6...Four circumferential frame parts, 7
...Shuyu, 8...'Ams 9, 9'--Door surface, io, io'...Left side edge, 11.11'...
・Right side edge, 12... Lock side side frame folding formation piece, 1
2'... Side frame forming piece on the lock side, 12a... Turned part, 13... Side frame turning forming piece on the base side, 13'...
・Side frame forming piece on the base side, 13a... Turned part, 14・
...Upper edge, 15...Lower edge, 1G...Upper frame forming piece, 17...Lower frame forming piece, 17d...Bending portion, 1
8... Lock mounting tongue piece, 19, 20.21... Folding line, 22... Adhesive allowance, 23, 24.25 River folding line,
26... Adhesive allowance, 27... Folding line, 28... Adhesive allowance, 29.30... Folding line, 31... Adhesive allowance, 32
...Notch for lock installation, 33...Folding line, 34.
...Bending part, 35...Folding line, 36...Bending part, 3
7.38...Gluing cost.

Claims (1)

[Claims] This is a method of manufacturing a hollow steel plate wall by combining a pair of front and rear surface materials, and the above manufacturing method involves forming a door surface section on one surface material, and forming sections on the left and right sides Hi- and upper and lower side lines of this door surface section. A side frame folding forming piece on the lock side, a side frame folding forming piece on the root side, and an upper frame forming piece and a lower frame forming piece are respectively formed in a connected manner, and the lock is mounted at a predetermined position on the side frame folding forming piece on the lock side. A process of punching and forming the tongue piece, and bending the side frame folding pieces and the upper and lower frame forming pieces on the lock side and root side, respectively, and forming the four circumferential frame parts of the door integrally using only one surface material. Later, a process of planting and welding a large number of studs on the inner surface of the door surface of one of the surface materials, forming a section of the door surface on the other surface material, and attaching a lock side to the left and right edges of this door surface, respectively. a step of connecting and forming a side frame forming piece and a side frame forming piece on the root side and forming a lock mounting notch at a predetermined position of the side frame forming piece on the lock side;
A steel plate characterized by a step of bonding or welding to the four circumferential frame portions of one surface material, and bath-welding the other surface material and the stud to bring the pair of front and rear surface materials together! ! ! How to manufacture doors.