JPS6344237Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention is a method for positioning and supporting workpieces to be joined to each other when welding and fixing a bracket for vehicle body assembly to a vehicle door sash. This invention relates to a holding device for a workpiece.

Prior Art For example, when welding and fixing a bracket B for body assembly to a door sash A of a car with a door mirror specification (see Fig. 5), a bridge is attached to a portion of the door sash A that has a substantially U-shaped cross section. The front ends b ₁ , b ₁ of the bracket B are brought into contact with the part a ₁ , and a corner cover part for attaching the door mirror is attached between the opposing surfaces of the upper and lower sides a ₂ , b ₂ , a ₃ , b ₃ in the subsequent process. In order to assemble them, they are welded together by positioning them at predetermined intervals in advance.

Conventionally, for these workpieces, door sash A is fitted and supported on the front end surface of fixed base 1, and bracket B is engaged and supported on the mounting surface of movable base 2 by a pin 3 that can be moved up and down. By moving the bracket close to the fixed base 1, the bracket B is attached to the bridge part _a1 of the door sash A.
It is positioned using a holding device (see FIG. 6) that abuts the front end portions b ₁ , b ₁ of .

Problems to be Solved by the Invention However, in this holding device, the bracket B is simply supported by pins 3 that can move up and down, so vibrations occur while the movable base 2 is moved close to the fixed base 1. etc., the bracket B may shift so that the front end side falls downward. In this case, the distances X and Y between the upper and lower sides, which are required with considerable accuracy when installing bracket B, will be incorrect, so in fact the corner cover will be welded in a later process to a state where it is impossible to install the parts. I end up doing it.

Means for solving the problems In the workpiece holding device according to the present invention,
It is constructed by equipping the movable base with a spacer plate that is positioned between the upper sides of the workpiece supported by the fixed base and the movable base to set the interval.

Function: With this workpiece holding device, the spacer plate can hold one side of the workpiece, such as a bracket, from above and slide the movable table so that it comes into contact with the other workpiece. By cutting in between the upper sides of the materials and setting the intervals as specified, it becomes possible to weld and fix the workpieces to each other while maintaining precise intervals between the upper and lower sides.

Embodiments The following description will be made with reference to FIGS. 1 to 4.

In this embodiment, when welding and fixing the bracket B for mounting the vehicle body to the door sash A similar to that shown in FIG. It is configured.

The holding device includes a fixed base 10 that supports the door sash A, and a movable base 20 that places the bracket B.
It is composed of. The fixing base 10 is provided with a receiving plate part 11 that fits and supports the door sash A at a flange part on the back side with the bracket mounting side of the door sash A facing the front. The movable table 20 is disposed on a slide base 21 so as to be movable toward or away from the fixed table 10, and the mounting plate 2 of the bracket B is mounted on the slide base 21 via a support 22 fixed to the slide base 21.
3 is installed. The mounting plate 23 is provided with positioning pins 24 which are removably inserted into the mounting holes b ₄ , b ₄ (see FIG. 5) of the bracket B. A plurality of positioning pins 24 are protruded from the elevating plate 24a, and by connecting the elevating plate 24a to an air cylinder 24b that is raised from the slide base 21, the positioning pins 24 can be inserted through a through hole (not shown) in the mounting plate 23. It is attached so that it can protrude above the board surface.
Further, a spacer plate 25 that engages with the upper surface of the bracket B is provided on the surface of the mounting plate 23 so as to be horizontally rotatable. The spacer plate 25 has a substantially hatchet-like shape when viewed from above, and a tip side 25a is formed to have a thickness corresponding to the distance set between the upper side of the door sash A and the bracket B. Further, this spacer plate 25 is attached to the loader 25c via the rod 25b on the base side, and
It is installed so that it can be rotated horizontally by the drive of 5c. This spacer plate 25 is equipped with a presser plate 26 that moves up and down below the plate surface. The holding plate 26 presses the bracket B arranged on the surface of the mounting plate 23, and is mounted so as to be moved up and down by an air cylinder 26a mounted on the surface of the spacer plate 25.

In the workpiece holding device configured in this way,
The door sash A is fitted into the receiving plate part 11 of the fixed base 10 and supported, and the bracket B is placed on the mounting plate 23 of the movable base 20 with its front ends b ₁ , b ₁ facing the door sash A. At this time, the position of the bracket B on the plane can be set by engaging and supporting the bracket B with a positioning pin 24 protruding from the surface of the mounting plate 23. Next, the loader 25c is rotated to horizontally move the spacer plate 25 until the tip side 25a is aligned with the upper side _b2 of the bracket B. This spacer plate 25 has its tip side 25a located on the plane of the upper side _b2 of the bracket B, and is also designed to lock the bracket B from above. After this, the bracket B is auxiliary pressed and supported by the presser plate 26 which is lowered by the air cylinder 26a. In this state, by horizontally moving the slide base 21, the movable base 20
When the door sill A is moved close to the fixed base 10, the door sash A
The front end _b1 of the bracket B comes into contact with the bridge part _a1 ,
Further, the leading end side 25a of the spacer plate 25 is positioned within the interval between the upper sides a ₂ and b ₂ . This spacer plate 2
The end side 25a of 5 is the door sash A as described above.
Since the thickness of the plate corresponds to the distance that should be set between the upper sides of the door sash A and the bracket B, this interruption inevitably allows the desired distance to be set between the upper sides of the workpieces A and B. It is also possible to accurately set the distance between the lower sides of the bracket B within the approximately U-shaped joint. If workpieces A and B are joined to each other by arc welding or the like in this state, accurate welding or the like can be performed.

Effects of the invention As described above, according to the workpiece holding device according to the present invention, it is possible to join the workpieces with accurate spacing between the upper and lower sides, so there is no problem with subsequent attachment to parts and the vehicle body. It never happens.

[Brief explanation of drawings]

Fig. 1 is a side view showing a workpiece holding device according to the present invention, Fig. 2 is a plan view of the device, Figs. An explanatory view showing an example of a workpiece, and FIG. 6 is a side view showing a conventional workpiece holding device. 10: fixed base, 20: movable base, 24: positioning pin, 25: spacer plate, 26: holding plate, A, B: workpiece, a ₁ : bridging part, b ₁ : front end part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) With respect to a fixed base that supports one workpiece whose cross section is approximately U-shaped, the upper and lower sides of the workpiece are The movable table is slidably equipped to position and place the other workpiece to be joined to the bridge part with a space between them, and the movable table has a space between the upper sides of the workpiece. A holding device for a workpiece, characterized in that a spacer plate for setting a spacer plate is mounted so as to be horizontally movable. (2) The holding device according to claim 1, wherein the movable table is provided with a positioning pin that protrudes from its mounting surface and supports the workpiece so as to be movable up and down. (3) The holding device according to claim 1, wherein the spacer plate includes a presser plate that is movable up and down and presses a workpiece placed on a movable table.