JPH0227929Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a sheet metal processing device, and in particular, it is capable of holding in a fixed state a sheet material that is entirely curved, such as an outside panel of an automobile door, and The present invention relates to a sheet metal processing device that can perform welding and other processing as well as bending processing.

(Prior art) For example, when joining a reinforcing panel to the outside panel of a car door, a special jig is used to fix the outside panel and the reinforcing panel in a predetermined position and spot welding is performed. There is.

On the other hand, when it is necessary to perform preliminary bending, so-called corner bending, on the outside panel, conventionally the outside panel is formed using a press.

(Problem that the invention aims to solve) When bending an outside panel and then joining a reinforcing panel, the bending process is 1
Even if it is a spot, a special process is set on the press to perform the press work, and the sheet material that has been bent in this way is led to a jig and spot welded, which takes two steps, which shortens the process. It was not a good idea.

An object of the present invention is to provide an apparatus that is particularly suitable for sheet metal processing of curved sheet materials and can perform bending processing in parallel with work such as welding.

(Means for Solving the Problem) A sheet metal processing apparatus according to the present invention includes a surface plate, a plurality of receiving members attached to the surface plate and protruding upward from the surface plate, and a plurality of receiving members that cooperate with each of the receiving members. A clamp having a swingable presser member that clamps a sheet material and a cylinder that swings the presser member, wherein the presser member is at a position above the sheet material and at a position where it is laterally removed from above the sheet material. and at least one mechanism provided on the surface plate for bending the sheet material, the bending mechanism being swingable. A blade, a cylinder that swings the bending blade, and a pad that can swing around a plurality of fulcrums, which jointly presses the vicinity of the portion of the sheet material that is bent by the bending blade together with a lower die. It has a pad and a cylinder that swings the pad.

(Example) Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the sheet metal processing apparatus 10 includes a surface plate 12, a receiving member 14, a clamp 16, and bending mechanisms 18, 19a, and 19b.

The surface plate 12 has an appropriate size according to the work to be performed by the sheet metal processing apparatus 10, and is installed on the floor at an appropriate height.

A plurality of receiving members 14 are provided, each of which is attached to the surface plate 12 and protrudes from the surface plate. As shown in FIG. 2, even if the sheet material 20 is curved, since the receiving member 14 protrudes from the surface plate 12, the sheet material 20 can be supported without any problem. Each receiving member 14 receives a sheet material 20 and is shaped so that the sheet material 20 takes a predetermined position.

In the embodiment shown in FIG. 2, the sheet material 20 is an outside panel of an automobile door, and the left receiving member 14a has a curved surface 24 that matches the curved surface 21 of one edge of the outside panel. On the other hand, the right receiving member 14b has a right-angled surface 22 on another edge.
It has a notch 25 for receiving. The receiving members 14 formed in this manner are placed on the surface plate 12 at intervals and fixed to the surface plate 12.

The clamp 16 includes a swingable holding member 26 that clamps the sheet material 20 together with each receiving member 14.
and a cylinder 28 that swings the presser member 26. The clamp 16 is supported such that the presser member 26 swings between a position above the sheet material 20 and a position where it is laterally removed from above the sheet material 20.

In the illustrated embodiment, the holding member 26 is pivotally attached to a bracket (not shown) projecting from the surface plate 12 and is swingable about a horizontal axis 30. One end of a fluid pressure cylinder 28 is swingably connected to the holding member 26, and the other end of the fluid pressure cylinder 28 is swingably connected to the surface plate 12. As a result, the presser member 26 presses the sheet material 20 shown in FIG.
It oscillates between an upper position and a position where it oscillates about a horizontal axis 30 and is laterally removed from above the sheet material 20 when the piston rod of the cylinder 28 is retracted.

The holding member 26 is formed in a shape suitable for holding the sheet material 20 that is the outside panel of the door. In this case, the shape of each presser member 26 can be determined in consideration of the shape of the receiving member 14 arranged oppositely.

In the embodiment shown in FIG. 2, the holding member 26 has an L-shape, and the holding surface 2 of the left holding member 26
7a slightly protrudes toward the receiving member 14a, whereas the clamping surface 27 of the right presser member 26
b largely protrudes toward the receiving member 14b. This means that the holding member 26 on the left side holds the sheet material 20 and the reinforcing panel 32 between the flat surface of the receiving member 14a and the holding surface 27a, and the holding member 26 on the right side holds the holding member 14 between the holding member 14a and the holding surface 27b.
This is due to the need to enter the notch 25 of b.

At least one mechanism for bending the sheet material 20 is provided. In the embodiment shown in FIG. 1, three bending mechanisms 18, 19a, and 19b are provided. Each bending mechanism is shown in Fig. 3a,
As shown in b, the bending process is performed, and they can have substantially the same configuration. However, the degree of bending applied to the sheet material 20 may differ depending on the portion where the bending is to be performed.

The sheet material 20 is placed on the upper side of the lower mold 34, and the sheet material 20 is pressed against the lower mold 34 by the pad 36.
The bending blade 38 is moved toward the pad 36 to bend the sheet material 20. After processing, the bending blade 38 is returned to release the pad 36 in preparation for the next round bending.

Bending mechanism 18 shown in FIGS. 4 and 5
has a swingable bending blade 38, a cylinder 70 that swings the bending blade 38, a pad 36 that swings around a plurality of fulcrums, and a cylinder 54 that swings the pad 36.

A lower mold 34 is fixed to the surface plate 12, and this lower mold 34 has a receiving surface 35 that matches the shape of the portion of the sheet material 20 to be bent.

The first bell crank 40 is formed into a substantially L-shape, consisting of a long side portion 42 and a short side portion 43.
The tip of the short side portion 43 forms a pad 36. The first bell crank 40 is swingably connected to a pair of second bell cranks 46 by a shaft 44 .

The pair of second bell cranks 46 are arranged on both sides of the first bell crank 40, and are composed of a long side portion 48 and a short side portion 49, and are approximately L.
It is formed into a letter shape. The short side 49 is swingably connected to a bracket 52 provided on the surface plate 12 by a shaft 50, and the shaft 44 is supported by a boss 47 provided at the free end of the long side 48. .

A piston rod 56 of a hydraulic cylinder 54 is pivotally connected to the free end of the long side 42 of the first bell crank 40, and the hydraulic cylinder 54 is pivotally connected to a support member 58 fixed to the surface plate 12. . As a result, when the hydraulic cylinder 54 is actuated to extend the piston rod 56, the first and second bell cranks 40, 46 take the position shown by the solid line, that is, the position in which the pad 36 presses against the sheet material 20, and the piston rod 56 When contracted, the first and second bellcranks 40, 46 take the position of the imaginary line, that is, the position where the pad 36 has sufficiently escaped obliquely upward from the sheet material 20.

When the pad 36 presses the sheet material 20,
It is preferable that the short side 49 of the second bell crank 46 abut against the stopper 60 to restrain further movement of the pad 36.

By providing first and second bell cranks 40, 46 and connecting the first bell crank 40 to the free end of the second bell crank 46, the pad 3
6 escapes the bending blade 38 and the bent portion of the sheet material 20 and moves diagonally upward. Therefore, even if the bent part has an acute angle shape as shown in FIG. 3, it can be bent and the sheet material 20 can be brought in and taken out without any hindrance.

A third bell crank 62 is arranged below the first bell crank 40 and is swingably supported by a bracket 52 of the surface plate 12 by a shaft 64. The bell crank 62 is formed into a substantially straight shape, consisting of a long side 66 and a short side 67, and the tip of the short side 67 serves as a bending blade 38. The third bellcrank 62 is actuated by a hydraulic cylinder 70.

The sheet material 20 is placed on the plurality of receiving members 14 of the sheet metal processing apparatus 10 and set at a predetermined position. Sheet material 2
After the reinforcing panel 32 is placed on one edge of the reinforcing panel 32, the fluid pressure cylinder 28 of each clamp 16 is activated to clamp the sheet material 20 (and the reinforcing panel 32) by the holding member 26.

Bending mechanism 18 (bending mechanism 19a, 19
The same applies to b) by operating the fluid pressure cylinder 54 to press the pad 36 against the lower mold 34, and then
The fluid pressure cylinder 70 is operated to move the bending blade 38 to bend the sheet material 20. After the processing is completed, the bending blade 38 is returned to release the pad 36.

The sheet material 20 and the reinforcing panel 32 are spot welded, and the clamping by the clamp 16 is released.

(Effect of idea) According to the present invention, the following effects can be obtained.

Since the bending process can be performed together with welding, etc., the bending process using a press can be omitted, and the productivity when processing sheet materials into metal sheets can be improved.

As in the embodiment, there is no particular change in the number of steps in the assembly process of spot welding the sheet material and the reinforcing panel, so the effect of reducing the number of steps is significant.

Since the plurality of receiving members protrude upward from the surface plate, the sheet material can be supported without any problem even if the sheet material is curved.

The holding member of the clamp swings between the position above the sheet material and the position where it is laterally removed from above the sheet material. This can be done from above the work equipment while it is moving.

Since the pad of the bending mechanism jointly presses the vicinity of the part of the sheet material that is bent by the bending blade, it is possible to prevent the sheet material from being wrinkled or deformed.

[Brief explanation of the drawing]

Figure 1 is a plan view of the sheet metal processing equipment, Figure 2 is the
3A and 3B are explanatory views showing the bending process, FIG. 4 is a front view of the bending mechanism, and FIG. 5 is a plan view. 10: Sheet metal processing equipment, 12: Surface plate, 14, 14
a, 14b: receiving member, 16: clamp, 18,
19a, 19b: Bending mechanism, 26: Pressing member, 40, 46, 62: Bell crank.

Claims (1)

[Scope of utility model registration request] A surface plate, a plurality of receiving members attached to the surface plate and protruding upward from the surface plate, a swingable holding member that clamps the sheet material together with the receiving members, and the holding member is oscillated. The clamp has a cylinder that allows the holding member to swing between a position above the sheet material and a position laterally removed from above the sheet material; and at least one mechanism that is provided on the board and performs bending processing on the sheet material, and the bending mechanism includes a swingable bending blade, a cylinder that swings the bending blade, and a mechanism that rotates around a plurality of fulcrums. A sheet metal processing apparatus comprising: a pad that is swingable and presses the vicinity of a portion of the sheet material that is bent by the bending blade in cooperation with a lower mold; and a cylinder that swings the pad.