JPS6157102B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically riveting steel panels for overhead doors. In particular, by using a driven rivet that does not require a hole for inserting the rivet, automatic setting is possible even if the size of the panel is small, 2) constant pitch feeding, clamping, and riveting processing is possible, and 3) changes in panel thickness. The present invention relates to an automatic riveting method for fixing a vertical frame and a middle frame to a plate frame of a steel panel for an overhead type door, in which rivets of the same size can be used.

In Figure 1, A is one of the overhead doors.
As shown in FIG. 3, the panel has irregularities formed by roll forming in the lateral direction, specifically V-grooves 1 and R-grooves 2 vertically symmetrical with respect to the center. The upper and lower edges of the panel A are provided with square-shaped bent edges 3.
A vertical frame 4 is fixed to both sides of the panel A, and a middle frame 5 is fixed in parallel to the middle part of the panel A. These frame members 4, 5 are passed between the upper and lower bent edges 3, 3 and fixed with driving rivets, and the present invention relates to automatic riveting of these frame members.

4 to 7 are explanatory diagrams of a driving rivet used in the riveting device of the present invention. The driving rivet 9 does not require a pilot hole to be drilled into the object to be fastened, unlike a single screw or ordinary rivet, and can be crimped without the need for aligning the holes. 2
Even when caulking a plated steel plate or a colored steel plate, there is no damage to the body to be caulked, excellent airtightness, and excellent reliability against loosening. 4 In addition, it has excellent performance such as automatic multi-axis riveting of connections using a rivet setter, and uses driven rivets with these characteristics to replace the conventional spot welding of frame materials. It is.

To roughly explain the riveting state of a driving rivet with reference to FIGS. 4 to 7, 6 is a punch, 7 is a stem, 8 is a material to be fastened (in the present invention, a panel and a frame material), and 9 is a In a driving rivet, as shown in FIG. 4, initially the punch 6 and stem 7 as well as the fed driving rivet 9 are concentric. When pressure is applied sequentially from FIG. 4, the tip of the driving rivet 9 penetrates the material 8 to be fastened, and finally the tip reaches the convex portion at the center of the punch 6. Then, the tip of the tube-shaped driving rivet is expanded and the riveting is completed. The present invention automatically fixes a frame material to a panel using a rivet setter using such driving rivets 9.

As shown in FIG. 8, the vertical frame 4 has a U-shaped cross section, and one flange 4a is located on the outside of the panel.
The other flange 4b is riveted to the inside. In this case, since the vertical frame 4 is thicker than the middle frame 5, the rivet position during assembly is determined by applying pressures 4c and 4d using a press in advance to determine the thickness of the middle frame 5.
Only this part is the same (see Utility Model Application No. 55-27709 by the same applicant). Reference numeral 4e denotes a hole provided in the flange 4b concentrically with the rivet joint portion 4d, through which the punch 6 is inserted when the 4d portion of the vertical frame is riveted. 4f
is a pre-drilled hole for mounting the hinge.

As shown in FIG. 9, the middle frame 5 has a square cross section at the center, and has a hinge attachment hole 5a pre-drilled, but no other pre-processing is done.

Now, in order to join the middle frame 5 and the vertical frame 4 to the panel by riveting, first attach the vertical frame 4 _A to one end of the panel, then attach multiple middle frames 5 (two in the figure), and then attach the vertical frame 4 A to one end of the panel. Frame 4 _B can be attached using the same riveting machine and the same rivets.

Now, at the riveting line, panel A is transferred in the direction of arrow X in Fig. 1 (to the right in the figure) and riveted, but the vertical frame _4A on the tip side
is crimped on the back at two places each at A ₁ and A ₂ , and the middle part
The front is caulked at points C ₁ and C ₂ .

Next, the inner frame 5 is riveted from the back side at two points each at A ₁ and A ₂ and at one point each at C ₃ , C ₄ , and C ₅ . Rear vertical frame 4 _B is B ₁ , B ₂ parts each 2
It is riveted from the front side by caulking the back of the dots and one point each of C ₁ and C ₂ .

Now, the rivet positions as described above are sequentially riveted using a rivet setter while being conveyed by a conveyor, and the method of the present invention is comprised of three steps, 1st, 2nd, and 3rd steps, as shown in FIG.

a 1st process: From the back side of the tip vertical frame 4 _A , middle frame 5
Caulking work on A ₁ and A ₂ parts.

This first step is carried out using two interlocking rivet setters on the left and right. Align vertical frame _4A on the leading edge side with panel A, which is fed with the back side facing upward, and rivet it after setting it. After attaching the vertical frame 4 _A , the middle frame 5 is attached one after another after being fed at a certain pitch by a conveyor. Note that the middle frame 5 is sucked from above the automatic supply conveyor by a vacuum mechanism, raised, and then slid laterally to be positioned on the panel and removed. After riveting the two points A ₁ and A of the vertical frame 4 at the tip to two places each and the _two points A ₁ and A of the middle frame 5 _{to two} places each, panel A once passes through the rivet setter in the first process. .

b Step: B ₁ , B ₂ from the back side of rear end vertical frame 4 _B
Caulking work on the part.

Panel A, which has been crimped by the rivet setter in the first step, is sent to the next step, which consists of two interlocking rivet setters. At this point, the vertical frame _4B at the rear end is riveted. in this case,
First, the left side _B1 of the vertical frame is riveted using the left rivet setter.

Next, tilt the lower conveyor (Figure 11b),
Turn panel A diagonally, remove the panel from the punch support, put the panel into the riveting machine on the right side, and rivet it. Rotate the conveyor again (FIG. 11c), tilt the panel, and remove the panel from the punch support. FIG. 11 shows the state of movement of the conveyor when performing the above-mentioned riveting.

c 1st step: Caulking work of C ₁ and C ₂ parts from the front side of the entire frame.

When the processing in the first step is completed, the panel is turned over and the vertical frame is riveted from the front side.
The 5th step consists of a five-unit interlocking type rivet setter, and first the C ₁ and C ₂ portions of the vertical frame 4 _A on the tip side are front crimped. In this case, the middle frame is picked up by the stopper and proximity switch and riveted from the front side. The panel is sent and next is the center part of the middle frame C ₃
The front side is crimped. It is further fed and the center portions C ₄ and C ₅ of the middle frame 5 are caulked. When the limit switch detects the end of the panel at the rear end vertical frame, the rear end vertical frame stopper is raised to stop the panel, and the rear end vertical frame clamp is operated to clamp the panel and swage it.

As described above, according to the present invention, a steel overhead door panel with roll-formed V-shaped grooves and R-shaped grooves can be made extremely easily by using a new driving rivet that does not require drilling pilot holes for rivets. Automatic riveting can be done in an orderly manner.

Even if the width of the panel is large or small, it is possible to automatically set it in response to the size of the width of the panel, so that the operating rate can be improved.

The system automatically feeds the panels at a certain pitch on the conveyor, clamps them at predetermined positions, and rivets them after clamping.
This contributes to improved product accuracy and labor savings.

Even if there is a change in plate thickness, by pre-expanding the area, automatic operation can be performed using the same rivet, which is extremely efficient.

Because the conveyor (workbench) can be tilted,
It is easy to insert and remove from the caulking mold,
Automatic riveting is now possible even for panels with complex cross-sectional shapes.

[Brief explanation of the drawing]

Fig. 1 is an internal view of an overhead door panel completed by the automatic riveting method according to the present invention, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a sectional view of Fig. 1. , Figures 4 to 7 are explanatory diagrams of driving rivets, Figure 8 is a vertical frame, Figure 9 is a perspective view of the middle frame, Figure 10 is a riveting process diagram, and Figure 11 is a diagram of the second process. An explanatory diagram of the tilting operation of the conveyor. In the diagram: A...Overhead door panel, 1...V groove, 2...R groove, 3...bending part,
4... Vertical frame, 4a, 4b... Flange, 4c, 4
d...Expansion pressure part, 4e...Front hole, 4f...Hinge mounting hole, 5...Inner frame, 5a...Hinge mounting hole, 6
... Punch, 7 ... Stem, 8 ... Material to be fastened, 9
... Drive rivet, 10 ... Conveyor, A ₁ ,
A ₂ , B ₁ , B ₂ ... Back caulking part, C ₁ , C ₂ , C ₃ , C ₄ ,
C ₅ ...Front caulking part.

Claims (1)

[Claims] 1. A first process using a two-unit interlocking type rivet setter that caulks the back side of the leading vertical frame and middle frame, a second process using a two-unit interlocking type rivet setter that caulks the back side of the rear end vertical frame, and The first process uses five interlocking rivet setters that perform surface riveting, and each process is connected by a conveyor, and automatic assembly is possible by using driving rivets as fixing devices that do not require insertion holes. Features an automatic riveting method for steel panel and frame materials for overhead doors.