JPH04300186A - Dismantling test assisting device - Google Patents

Abstract

PURPOSE:To mechanically assist the dismantling work of an operator, and to easily and efficiently carry out dismantling work. CONSTITUTION:An operating arm 1 having a knife 7 for dismantling work is pivotally supported by a laterally movable table 3 so as to be oscillatable up and down. The laterally movable table 3 is supported by a laterally moving cylinder 13 (not shown) on an elevating table 12 (not shown) so as to be laterally movable, and the elevating table 13 is supported by an elevating cylinder 19 on a back-and-forth movable table 17 so as to be elevatable. The back-and-forth movable table 17 is supported by a back-and-forth moving cylinder 23 on a base table 22 (not shown) so as to be movable back and forth. The operating arm 1 has a holding part 5 for human operation, and a sensor 8 for detecting the operational direction is provided to this holding part 5. By the output of the sensor 8, cylinders 9 (not shown), 13 (not shown), 19, and 23 are operated in the same directions as the directions of the operation so as to move the operating arm 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disassembly test auxiliary device for use in cutting tires and collecting samples during tire disassembly tests.

0002

[Prior Art] In a tire disassembly test, a tire is placed on a workbench and a worker cuts it with a knife to collect a sample, or a worker cuts the tire by pulling on the tread rubber, carcass ply, etc. Samples are being collected. Conventionally, collection of these samples has relied exclusively on manual labor by workers.

0003

[Problems to be Solved by the Invention] Relatively strong force is required to cut and peel tires during tire disassembly tests. However, in recent years, due to the aging of workers and labor shortages, it has become necessary to use human resources unsuitable for this work, such as female workers being engaged in demolition tests. Therefore, in order to enable these workers to work, a device is required to assist with weak gripping force, pulling force, pushing force, etc.

In view of this problem, the present invention provides a disassembly test assisting device that can mechanically assist an operator in disassembling work.

[0005]

[Means for Solving the Problems] The present invention provides a demolition work tool 7
An actuating arm 1 is provided at its tip so as to be freely movable in three-dimensional directions, and cylinders 9, 13, 19, and 23 are provided for operating the actuating arm 1 in each three-dimensional direction. The grip part 5 is provided with a sensor 8 that detects the operating direction when the operating arm 1 is manually operated, and the output from the sensor 8 causes the cylinders 9, 13, 19, and 23 corresponding to the operating direction to be moved in the same direction. It is provided with control valves 26 to 29 that operate in the directions.

[0006]

[Operation] When dismantling the tire 37, when the grip portion 5 of the operating arm 1 is gripped by hand and operated in a desired direction, the sensor 8 of the grip portion 5 detects the direction of operation. The control valves 26 to 2 are controlled by the output from this sensor 8.
9 works, cylinders 9, 13, 19 corresponding to the operating direction
, 23 move in the same direction to move the operating arm 1 in the operated direction. Therefore, the movement of the actuating arm 1 can be mechanically assisted by the cylinders 9, 13, 19, and 23.

[0007]

[Embodiment] The present invention will be described in detail below with reference to the illustrated embodiment. In FIGS. 1 and 2, 1 is an actuating arm;
The rear end is pivotally supported by a support shaft 2 to the lower part of a lateral moving table 3 so as to be vertically swingable. At the front end of the actuating arm 1, there is a chuck part 4 for attaching a demolition work tool, and this actuating arm 1
A grip part 5 is provided for the operator to manually operate the handle.

The chuck portion 4 is rotatably adjustable around its axis and bendable, and can be appropriately locked by a lock lever 6. A knife 7 serving as a dismantling tool is detachably attached to the chuck part 4. The grip part 5 is provided with a large number of sensors 8 in the axial direction and the circumferential direction. The sensor 8 outputs an electric signal corresponding to the pressure when the worker grips the grip part 5 with one hand and applies a predetermined load. detects the operating direction when the actuating arm 1 is manually operated.

Reference numeral 9 denotes a swing cylinder connected to the upper part of the lateral moving table 3, and the lower end of its piston rod 10 is connected to the middle part of the operating arm 1. Therefore, as the swing cylinder 9 expands and contracts, the operating arm 1 swings up and down. The lateral movement table 3 is supported so as to be slidable in the left-right direction along a pair of upper and lower guide rods 11. The guide rod 11 is installed between a pair of left and right lifting platforms 12. Further, a lateral movement cylinder 13 is attached to one of the lifting tables 12 in the left-right direction, and a piston rod 14 of this movement cylinder 13 is connected to a bracket 15 of the lateral movement table 3.

Each lifting platform 12 is supported by a pair of left and right columns 16 so as to be able to rise and fall freely. The pillar 16 is a front-back moving platform 17
The upper end is connected by an upper frame 18. An elevating cylinder 19 is attached to the upper frame 18 in the vertical direction, and the lower end of a piston rod 20 of the elevating cylinder 19 is connected to a connecting member 21 installed between the upper parts of the pair of left and right elevating tables 12.

The back-and-forth movable table 17 is dovetail-fitted onto the base 22 so as to be slidable back and forth. A longitudinally movable cylinder 23 is attached to the rear side of the base 22, and a piston rod 24 of this longitudinally movable cylinder 23 is attached to a bracket 25 of the longitudinally movable table 17.
is connected to. Each cylinder 9, 13, 19, 23,
As shown in FIG. 3, it is composed of double-acting hydraulic cylinders, and each cylinder 9, 13, 19, 23 is controlled by switching control valves 26-29 of electromagnetic servo valve type. Each solenoid section of the control valves 26 to 29 is connected to a valve drive circuit 3.
Connected to 0-33. A discriminator 3 is provided between the valve drive circuits 30 to 33 and the sensor 8 for discriminating the operating direction of the actuating arm 1 based on a combination of signals from each sensor 8.
4 is interposed, and the discriminator 34 outputs a signal to the valve drive circuits 30 to 33 corresponding to the operating direction at that time. 35 is a hydraulic pump.

In the tire disassembly test, the tire 37 is placed on the work table 36 and cut with the knife 7 to collect a sample. At this time, the operator grasps the grip portion 5 of the actuating arm 1 with one hand and applies operating force in the required direction. Now, in order to align the knife 7 with the cutting position of the tire 37,
When a rightward operating force is applied to the gripping part 5, one or several sensors 5 out of the many sensors 5 of the gripping part 5 sense the rightward pressure. Then, the discriminator 34 discriminates the leftward operation, and switches the control valve 27 to the left or right via the valve drive circuit 31. Therefore, the lateral movement cylinder 13 performs an extension operation and moves the lateral movement table 3 to the right (arrow a) along the guide rod 11 of the lifting table 12, so that the actuating arm 1
The position of knife 7 also moves to the right via . Then, when the knife 7 reaches the predetermined position and the operating force is released, the signals from the sensor 8 and the discriminator 34 disappear.
The control valve 31 returns to neutral and the lateral movement cylinder 13 stops extending. Therefore, the lateral moving table 3 stops at that position.

Next, the tire 37 on the work table 36 is cut. At this time, hold the grip part 5 and operate the operating arm 1 to swing it downward around the support shaft 2. Then, the operating force for downward swinging is detected by the sensor 8 and the discriminator 34, and the control valve 26 is switched to the downward swinging direction, so that the swinging cylinder 9 performs an extension operation, and the operating arm 1 is moved to the support shaft 2.
Rotate it downwards. Therefore, since the operator's operation is assisted by the swing cylinder 9, the operator can cut the tire 37 with the knife 7 without using a large force.

If the lifting platform 12 is too high during this cutting, if a force is applied to lower the rear end of the actuating arm 1 when operating the grip part 5, the sensor 8 and discriminator 34 will detect the operating force in the downward direction. is sensed, and the control valve 28 is switched to the downward direction. Therefore, the elevating cylinder 19 is extended and the elevating table 12 is lowered. Furthermore, if a forward force is applied to the grip part 5 of the actuating arm 1, the sensor 8 and the discriminator 34 detect the forward operating force and switch the control valve 29 to the forward side, so that the forward and backward movement cylinder 23 is extended. The back-and-forth moving table 17 moves forward.

[0015] The sensor 8 senses the operating force only while it is being applied to the gripping part 5. Therefore, as long as the operating force is applied, the actuating arm 1 will move to each cylinder 9, 13, 19.
, 23, it moves in the operating direction, and when the operating force is released, it automatically stops at that position. Rubber layer 3 of tire 37
8 from the belt layer 39, a clamping tool 40 may be attached to the chuck portion 4 instead of the knife 7 as shown in FIG. 4, and the peeling operation may be performed in the same manner as the cutting operation described above.

A large number of sensors 8 of the gripping portion 5 are provided as described above, and the discriminator 34 is determined based on the combination of their outputs.
In addition to determining the direction of operation, as shown in FIG.
, elevation sensor parts 45, 46, front and rear sensor parts 47,
They may be provided separately for each of the 48 units. Also, control valve 2
Pressure control types are used for cylinders 6 to 29, the magnitude of the operator's operating force is simultaneously detected by the sensor 8, and a force several times proportional to the operating force is applied to each cylinder 9, 13, 19, 23.
It is also possible to make it come out by.

In that case, each cylinder 9, 13, 19, 2
It is also possible to interpose a sensor such as a load cell at the tip of the piston rods 10, 14, 20, 24 of No. 3, detect the magnitude of force with this sensor, and perform feedback control so that a predetermined force is achieved. .

[0018]

According to the present invention, an operating arm 1 having a dismantling tool 7 at its tip is provided so as to be movable in three-dimensional directions, and a cylinder 9 is provided for operating the operating arm 1 in each three-dimensional direction. , 13, 19, and 23, and a sensor 8 is provided on the operating grip 5 of the operating arm 1 to detect the direction of operation when the operating arm 1 is manually operated, and the output from the sensor 8 is used to Since the cylinders 9, 13, 19, and 23 corresponding to the operating direction are provided with control valves 26 to 29 that operate in the same direction, each cylinder 9,
13, 19, and 23, the operating arm 1 can be operated with mechanical assistance, and tire disassembly work can be carried out easily and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the entire device.

FIG. 2 is a front view of the entire device.

FIG. 3 is a block diagram of a control system.

FIG. 4 is a sectional view showing a peeling operation.

FIG. 5 is a layout diagram of sensors.

[Explanation of symbols]

1 Actuation arm 5 Operation grip part 8 Sensor 9 Cylinder 12 Lifting platform 13 Cylinder 17 Back and forth moving platform 23 Cylinder 34 Discriminator

Claims (3)

[Claims] Claim 1: An operating arm (1) having a disassembly work tool (7) at its tip is provided so as to be movable in three-dimensional directions, and a cylinder (1) for operating the operating arm (1) in each three-dimensional direction. 9) (13) (19) (23) are provided, and a sensor ( 8) is provided, and the output from this sensor (8) causes the cylinder (9) (
13) A disassembly test auxiliary device characterized by being provided with control valves (26) to (29) that operate in the same direction as in (19) and (23). 2. The disassembly test auxiliary device according to claim 1, wherein the disassembly tool is a knife (7). 3. The disassembly test auxiliary device according to claim 1, wherein the disassembly work tool is a grip tool (40).