JP3015033U - Stripper punch device for brake shoe stripper - Google Patents

Abstract

(57) [Summary] [Purpose] The rivet that secures the brake shoe and brake liner can be easily and reliably removed.
Also, the rivet can be tightened. [Structure] A stripper punch device for a brake shoe stripper installed in a device comprising a ram portion 2 which is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, and a work table 6 which is located below the ram portion 2. The device is attached to the ram portion 2, and the guide pin 13 or the stripper punch 12 itself is formed so as to be retractable from the tip of the stripper punch 12 by an operating device attached to the ram portion 2, and when the rivet is removed, the position of the rivet is adjusted. The guide pin 13 is projected from the tip of the stripper punch 12 when necessary.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is very easy and sure to remove the rivet that secures the brake shoe and the brake liner when the brake liner of a tire of a large vehicle such as a truck or a bus or a medium-sized vehicle is worn out and replaced. The present invention relates to a stripper punch device for a brake shoe stripper, which can perform rivet tightening by changing a tool.

[0002]

[Prior art]

 Conventional large-sized vehicle tires have a pair of roughly half-moon shaped metal brake shoes symmetrically and vertically symmetrically arranged, and a brake liner made of asbestos or the like is fixed to the outer peripheral surface by rivets. When the brake liner was worn out and replaced, the brake liner was forcibly inserted between the brake shoe and the brake liner to cut each rivet, and the brake liner was scraped off from the outer surface of the brake shoe. After that, each rivet on the brake shoe side was punched out with a hammer.

[0003]

[Problems to be solved by the device]

 However, when scraping off the brake liner from the outer surface of the brake shoe while cutting each rivet, it is necessary to forcibly insert a shaving blade between the brake shoe and the brake liner, and Due to the fact that the brake liner had to be cut and that each rivet on the brake shoe side had to be punched out with a hammer or the like, replacement of the brake liner was extremely difficult and impossible.

Further, in such work, there is a problem that the outer surface of the brake shoe is damaged.

In view of the above-mentioned problems and the like, therefore, the present invention, when the brake liner of a tire is worn out and is replaced, removes the rivets that fix the brake shoe and the brake liner extremely easily and reliably. It was devised as a subject to provide a brake shoe stripper that can perform rivet tightening by changing the tool.

[0006]

[Means for Solving the Problems]

 This invention is a stripper punch device for a brake shoe stripper installed in a device comprising a ram portion that is lifted and lowered by a hydraulic or pneumatic driving means, and a work table located below the ram portion. The above-mentioned problems are solved by forming a guide pin from the tip of the stripper punch or the stripper punch itself so that it can be retracted by being attached to the ram portion and attached to the ram portion.

Further, since a crimping punch can be attached to the tip of the stripper punch device, the problem that the rivet crimping can be performed by changing the tool is solved.

[0008]

[Action]

 A stripper punch device for a brake shoe stripper according to the present invention is a stripper punch device installed in a device including a ram portion that is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, and a work table located below the ram portion. This stripper punch device is attached to the ram part, and a guide pin or the stripper punch itself can be retracted from the tip of the stripper punch by an operating device attached to the ram part. Remove the rivet with the equipment stripper punch.

In the alignment at that time, the guide pin is projected from the tip of the stripper punch when necessary, so that a reliable rivet removal operation can be performed.

Further, since the crimping punch can be attached to the tip of the stripper punch device, the rivet can be crimped by changing the tool.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

That is, reference numeral 1 shown in the drawing is an apparatus main body, and includes a ram portion 2 which is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, a workbench 6 located below the ram portion 2, and a ram portion 2. The stripper punch device 11 is attached, and the punch receiving device 3 is placed and set at a position corresponding to the stripper punch device 11 of the workbench 6.

The stripper punch device 11 of the present invention uses the actuating device (not shown) attached to the ram portion 2 to move the guide pin 13 from the tip of the stripper punch 12 or the stripper punch (the guide pin 13 shown in the drawing is used to remove the stripper punch). (Use as) form itself so that it can appear and disappear.

As shown in FIG. 2, the specific structure thereof is such that an operating rod 15 is arranged in a punch case 14 and a guide pin 13 at its tip is projected and retracted, and is fixed to the ram portion 2. The actuating rod holding cylinder 19 is lowered by the holding body 18, and the actuating rod 15 is also lowered by the lowering. However, when the actuating rod holding cylinder 19 is lowered, the impact absorbing spring 17 is first contracted and the actuating rod holding cylinder 19 is impacted. When the absorbing spring 17 comes into contact with the storage body, the storage body descends and the spring 16 is contracted so that the actuating rod 15 pushes the guide pin 13 to project it. When the operation is released, the springs of the two springs 16 and 17 are released. The guide pin 13 is formed so as to be immersed by the repellency. Reference numeral 20 is a contact collar body, and 21 is a stopper body of the stripper punch 12.

On the other hand, the punch receiving device 3 is vertically arranged at a position facing the die 7 in which a through hole having a size large enough for the intermediate tubular portion of the rivet to pass through is punched and the die 7 is sandwiched. It is composed of two substantially circular brake shoe holding plates 3a. This brake shoe holding plate 3a is formed so as to be able to sandwich and support the brake shoe BS when it comes close to the brake shoe BS, and the brake shoe BS is held in the sandwiched support state. It is designed to be rotatable by a handle H, and is formed so as to be movable in its axial direction.

The brake shoe holding plate 3a is rotatably supported by a shaft that extends laterally to the rear of the apparatus body 1 so that the entire body can be moved up and down slightly. Is suspended by a spring (not shown) behind the brake shoe holding plate 3a when the stripper punch 12 comes into contact with the brake shoe BS, and the brake shoe holding plate 3a is lowered and placed on the workbench 6. The rivet is pulled out by stopping by contacting the fixed abutment table 4.

Further, between the brake shoe holding plates 3a, a gate type die stand 3b on which a die 7 is placed is mounted and fixed. A lower end portion 5 of the brake shoe holding plate 3a is fixed to a work table 6 and is formed so that it can be removed when it is not necessary.

On the other hand, a caulking punch can be attached to the tip of the stripper punch device 3 so that the rivet caulking can be performed.

Further, the operation of the ram portion 2 is formed so as to be switchable so that it is stopped once and then further lowered by an instruction again, or simply lowered to the rivet tightening state. The operation is performed by the two foot pedals FP. The punch receiving device 3 does not have to have the above-described structure, and the one having the optimum structure for the brake shoe BS that performs rivet tightening is used.

[0020]

[Effect of device]

 The present invention thus formed is a stripper for a brake shoe stripper installed in a device including a ram portion 2 which is moved up and down by a driving means such as hydraulic pressure or pneumatic pressure, and a work table 6 which is located below the ram portion 2. In the punching device, this stripper punching device is attached to the ram portion 2, and the actuator attached to the ram portion 2 forms the guide pin 13 or the stripper punch 12 itself from the tip of the stripper punch 12. Therefore, when removing the rivet, the rivet is removed by the stripper punch of the stripper punch device.However, when aligning the rivet at that time, if the rivet has a hole, the stripper punch 12 will be removed. When necessary, project the guide pin 13 from the tip, It is those capable of performing a rivet removal work.

Further, by forming a caulking punch at the tip of the stripper punch device so that the caulking punch can be attached, rivet caulking can be performed by changing the tool.

Therefore, according to the present invention, when the brake liner of the tire is worn out and replaced, the rivet that fixes the brake shoe and the brake liner can be removed very easily and reliably, and By changing the tool, the rivet can be tightened and other practical and practical useful effects can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the stripper punch device of the present invention is attached.

[Explanation of symbols]

1 Device Main Body 2 Ram Part 3 Punch Receiving Device 3a Brake Shoe Retaining Plate 3b Die Stand 4 Retaining Plate Receiving Base 5 Lower End 6 Worktable 7 Die 11 Stripper Punching Device 12 Stripper Punch 13 Guide Pin 14 Punch Case 15 Actuating Rod 16 Spring 17 Shock absorbing spring 18 Holding body 19 Actuating rod holding cylinder BS Brake shoe H Handle FP Foot pedal

Claims (2)

[Scope of utility model registration request] 1. A stripper punch device for a brake shoe stripper, which is installed in a device comprising a ram portion that is moved up and down by hydraulic or pneumatic driving means, and a workbench located below the ram portion. Is a stripper punch device for a brake shoe stripper, characterized in that the stripper punch is attached to the ram portion, and a guide pin or the stripper punch itself can be retracted from the tip of the stripper punch by an actuator attached to the ram portion. 2. The stripper punch device for a brake shoe stripper according to claim 1, wherein a caulking punch is formed at the tip of the stripper punch device.