KR900008012Y1 - Back plate position fixing apparatus - Google Patents

Abstract

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Description

Backplate Position Lock for Bolt Fasteners

1 is a side view of the bolt fastening device is installed.

Figure 2 is an exploded perspective view of the main portion extract of the present invention.

3a, 3b or operating state diagram of the present invention.

* Explanation of symbols for main parts of the drawings

10: jig plate 11: brake cylinder

12: fixing pin 13: clamp insertion groove

14, 24: through hole 15: brake cylinder seat

20: jig die 21: operator

30: cylinder 31: cylinder rod

40: clamp 41: clamping jaws

43: cap nut 100: work table

110: back plate

The present invention relates to a back plate position fixing device of the automatic bolting device, in particular, the new development of the applicant for automatically fastening and coupling the brake cylinder as a bolt to the back plate (Back Plate) fixed to the vehicle axle end, that is, At the same time, the bolt with the washer is automatically aligned and loaded, and it is loaded to the fastening part. Punching of the fastening hole is carried out in the back plate located on the jig, and the back plate and the brake cylinder are pretightened through the hole. And a bolt fastening device configured to continuously perform a complete fastening operation, the back plate position fixing device being a partial device constituting the electric bolt automatic fastening device, to jig the back plate to facilitate punching processing and bolt fastening. It is firmly fixed and devised.

The disc-shaped back plate fixedly mounted to the axle end of the vehicle is fixedly coupled with two bolts of brake cylinders for expansion operation of the brake disc which controls the rotation of the wheel in the form of surface contact with the drum, which is a brake component of the vehicle. It is supposed to be installed.

Conventionally, there is no device for automatically fixing the brake cylinder to the back plate, and the coupling between them is fastened as a manual operation tool by manual operation by the operator.

This will be described in more detail as follows.

In order to correctly mount the brake cylinder on the back plate, the marking work must first be performed on the upper surface of the back plate on which the brake cylinder is mounted. After processing the bolt fastening hole by machining or drill machine, the back plate and brake cylinder were fixed as bolts by using hand tools such as a screwdriver. After fixing the back plate depending on the vise or manpower, the marking, punching and fastening operations were performed.

However, this is because the work is performed in an unstable state because all the processes are performed by hand, which implies a decrease in the work efficiency and the resulting decrease in productivity. During the entire process from the (marking) operation to the bolting operation, the operation cannot maintain accuracy, and the brake cylinder cannot be mounted correctly at a predetermined position, resulting in a malfunction that causes operational problems.

Therefore, in order to provide a back plate position fixing device that is a partial device for configuring the bolt automatic fastening device in order to solve the conventional problems as described above of the present invention, a jig plate for mounting the back plate on the upper side of the work table During installation, the clamp is extended as a cylinder on the inner surface of the axle hole of the back plate seated on the jig plate to secure the back plate firmly and completely.

This will be described in detail with reference to the accompanying drawings.

A jig die 20 having an operating hole 21 for operating a cylinder rod 31 at the center of the work table 100 of the machine main body, and a brake cylinder seating portion 15 are formed at one predetermined position, and the back plate is positioned. While fixing the fixing pin 12 for fixing, a jig plate 10 having a clamp insertion hole 13 in the center and a cylinder rod lifting hole 14 in the bottom thereof, and a cylinder rod sliding hole in the center thereof. A 42 is formed and the clamp 40 has a clamping jaw 41 formed integrally thereon, and a jig plate 10 is stacked on the jig die 20, and the bottom of the jig die 20 is formed. The cylinder 30 is fixedly installed in the lower end of the cylinder rod 31, the lower end of the operation is moved up and down through the operating hole 21 of the jig die 20 and the through hole 42 of the clamp inserted into the jig plate The cap nut 43 having the diameter 44 is installed All.

Referring to the operating state of the present invention configured as described above are as follows.

As shown in (a) and (b) of FIG. 3, the upper jaw 41 portion of the clamp 40 has a diameter larger than the lower end portion in the state where the cylinder rod 31 in which the cap nut 43 is coupled is first raised. Of the brake cylinder (11) on the brake cylinder seating portion (15) of the jig plate (10) in a state in which it is in contact with the reduced diameter portion (44) of the cap nut (43) inside the upper end of the reduced jaw (41). ), The position fixing through-hole 121 of the back plate, the position fixing pin 12 protruding on one side of the jig plate 10 and the axle hole ( 122, the clamping jaw 41 at the top of the clamp and the cap nut 43 located therein are inserted to be inserted (see FIG. 3A).

At this time, since the inner diameter of the axle hole 122 of the back plate is larger than the diameter of the upper portion of the clamp 40 while the upper end portion is reduced in contact with the cap nut reduced diameter portion 44, the jig plate 10 is easily inserted. The brake cylinder 11 is mounted at the correct position in a state where the fixing pin 12 for protruding thereon and the through hole 121 formed in the back plate are engaged with each other.

When the back plate 110 is seated on the jig plate 10, the cylinder 30, which is installed at the bottom of the jig die 20, is lowered. Cap nut 43 is provided with a coupling, the cylinder rod (31) is gradually gradually in a state in which the lower end diameter 44 of the cap nut (43) and the upper inner side of the clamping jaw (41) are in contact with each other. As the lowering, the lower portion is reduced and the cap nut (43) on the contrary the upper portion is inflated and wedged in the cramping jaw (41) so that the cramping jaw (41) located in the axle hole 122 of the back plate When the radially expanded, the clamping jaw 41 is strongly fitted in the axle hole of the back plate to secure the back plate.

After fixing the brake cylinder 11 by punching and bolting work in the state where the back plate 110 is fixed, in order to remove the back plate to which the brake cylinder is coupled, as soon as the cylinder rod 31 is raised, As the same cap nut 43 of the wedge is pulled out, the jaw 41 having its own elastic force is contracted and the diameter of the clamp 40 is reduced, so that the back plate is drawn upward and the coupling of the brake cylinder is completed.

The present invention constituted and operated as described above secures the back plate firmly by the lifting and lowering operation of the cylinder on the jig plate, so that the brake cylinder is automatically placed on the back plate in the same position as the present invention is intended. It is designed to be fixed accurately, it is a very useful design, such as to improve the productivity and reduce the manufacturing cost by promoting the automation of the product.

Claims (1)

In constructing the back plate position fixing device which is a part of the automatic bolt fastening device, a jig die 20 having an operating hole 21 for operating a cylinder rod at the center thereof is fixedly installed on an upper side of the work table 100. On the upper side of the die 20, a brake cylinder seating part 15, a back pin position fixing pin 12, and a jig plate 10 having a clamp insertion groove 13 formed in the center are stacked, and the jig plate 10 In the clamp insertion groove (13) of the cradle is inserted into the cylinder rod lifting hole 14 in the center, the clamp 40 having a clamping jaw 41 at the top is inserted, fixed to the jig die 20 bottom The rod 31 of the installed cylinder protrudes upward and downward through the operation hole 21 of the jig die 20 and the through hole 42 of the clamp, and a cap nut 43 at the end of the cylinder rod 31. Bolt fastening, characterized in that the fixed installation Backplate position retainer value.