JP2593162Y2 - Bolt loosening device for car door removal - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for loosening a bolt for removing a vehicle door in a vehicle assembly line.

[0002]

2. Description of the Related Art In an automobile assembly line, when the vehicle enters the assembly line after the painting process, the door is temporarily removed for outfitting of the inside of the body and the door is mounted again at the point where the outfitting is completed. ing.

In a conventional door removal operation, as shown in FIG. 6, a door support base 4 with casters is mounted on a carriage 3 moving on a floor 2 beside a conveyor 1 on which a body 6 is conveyed. An operator rides on the trolley 3, loosens the hinge bolts with a hand tool, removes the door 5 from the body 6, supports the door 5 on the door support 4, and moves the trolley 3 to a hanger conveyor (not shown) to move the door 3 to the door support. The door 5 is moved from 4 to a hanger conveyor, and is conveyed again to an assembling station to be mounted on the body 6 by the hanger conveyor.

[0004]

In the prior art, the hinge bolt is an inefficient loosening operation by hand, and the operator has to work on the moving carriage 3, which is a problem in safety. was there. In addition, the hand tool of the worker
Door hinge pin to remove the door hinge pin.
Move the pin remover in the X, Y, and Z axis directions, and
Japanese Patent Application Laid-Open No. 63-265787
No., the door hinge position is set by ITV camera and laser
Automatically doors by detecting and detecting three-dimensionally with distance sensor
A device for removing the electronic device is provided in Japanese Patent Application Laid-Open No. 3-264221.
These are extremely complicated and expensive
In addition, the door hinge position is
Do not remove the dipin removing member or nut runner properly.
There is no means to control the hinge position and the door
Check that the hinge pin is removed or the hinge bolt is loosened.
There is a problem with reality.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automobile door removing bolt loosening device which solves the above-mentioned conventional problems.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the gist of the present invention is that a door conveyed by a conveyor is used.
Door removal work position of mounted car body
A support base provided on both sides of the body on a fixed base so as to be able to move forward and backward in the X-axis direction, and a movement supported on the support base so as to be able to move left and right in the Y-axis direction and up and down in the Z-axis direction. Body, and the movable body is provided so as to be rotatable up and down.
Front mounted by shift cylinder mounted on base plate
Indexed into two upper and lower positions via the base plate
A lower pair of ratchet wrench, a visual sensor for detecting a door inner hole opened in the door to move the support base and the moving body to properly control the position of the ratchet wrench at the hinge bolt position of the door, and a cylinder. Yo
To move back and forth with respect to the door hinge side surface, and
The door hinge is always pressed and urged in the forward direction by the
Contact that contacts the side surface, and this contact moves backward
And a distance sensor for detecting the position of the door hinge side surface by a distance.

[0007]

According to the above construction, the support base is moved so that the pair of upper and lower ratchet wrench is located at the side surface of the door hinge.
Moves axially and touches door hinge side surface at this position
The distance sensor detects the distance with the contact
The blind hole is detected by a visual sensor, and the moving body is moved in the Y- and Z-axis directions by these detection signals to control the socket of the ratchet wrench to correspond to the two hinge bolts. After that, loosen the socket by fitting it to the hinge bolt,
By shifting the base plate upward or downward, the socket of the ratchet wrench is fitted to the upper or lower hinge bolt, so that all the loosening operations can be performed automatically.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 denotes a base fixed on the floor 10. On the base 11, a support base 12 that can move forward and backward in the X-axis direction is mounted. Reference numeral 34 denotes a guide rail laid on the base 11 in the X-axis direction, and reference numeral 35 denotes a roller provided on the support base 12 and running on the guide rail 34. A rack 36 is attached to the side surface of the base 11 in the X-axis direction.
The servo motor 13 for moving the support table and the speed reducer 3
The pinion 37 fixed to the output shaft of the speed reducer 38 moves the support base 12 in the X-axis direction by a traveling drive mechanism meshed with the rack 36.

A moving body 14 is supported on the support table 12 so as to be able to move left and right in the Y-axis direction and up and down in the Z-axis direction. Reference numeral 15 denotes a first guide member that moves the moving body 14 in the Y-axis direction.
Is provided with a first servomotor 17 that rotates the motor in the forward and reverse directions. Reference numeral 18 denotes a second guide member for moving the moving body 14 in the Z-axis direction. The second guide member 18 is provided with a second feed screw 19 and a second servomotor 20 for rotating the feed screw 19 forward and reverse.

A base plate 21 is mounted on the movable body 14 so as to be shifted up and down in two directions by a shift cylinder 39 in the Z-axis direction. The base plate 21 is provided with a pair of upper and lower ratchet wrench 22 having a socket.

Further, a position detecting device 23 is disposed on the moving body 14 near the base plate 21. As shown in FIGS. 3 and 4, the position detecting device 23 includes a contact 24 that contacts a door hinge side surface, and the contact 24.
And a distance sensor 25 (laser sensor) disposed opposite to a sensor measurement surface 24a provided at the rear end of the vehicle. A visual sensor 27 (CCD camera) for detecting a position 26 and detecting a deviation between a vertical position H in the Z-axis direction and a horizontal position L in the X-axis direction, and detection of the distance sensor 25 and the visual sensor 27 A signal is input to a controller (not shown) to control the support base moving motor 13, the first servo motor 17, and the second servo motor 20.

FIG. 5 shows a configuration of a Y-axis direction detecting means comprising the contact 24 and a distance sensor 25 (laser sensor).
As shown in FIG. 7, the contact 24 is always pressed and urged in the forward direction by a spring 31 to a slider 30 which is guided and held by a guide member 29 so as to be able to move forward and backward, and the slider 30 is contacted via a rod 32. This is a configuration in which it is connected to the forward / backward moving cylinder 33.

Next, the operation of the present invention having the above configuration will be described. First, the support base 11 is moved in the Y-axis direction, and the upper and lower ratchet wrench 22 is positioned at the door hinge side surface. At this time, the base plate 21 is positioned by the shift cylinder 39 such that the socket of the ratchet wrench 22 corresponds to, for example, the upper hinge bolt 28. Here, the position of the door inner hole 26 is detected by the visual sensor 27 to measure the deviation between the vertical position H in the Z-axis direction and the horizontal position L in the X-axis direction, and then the contact 24 is moved to the contact moving cylinder 33. By moving the contact 24 to the hinge side surface, the displacement of the contact 24 in the backward direction is measured by the sensor measurement surface 24a and the distance sensor 25 in the width direction W of the vehicle, that is, the displacement amount in the Y-axis direction.

The shift amount in the vertical direction H, the left and right position L, and the width direction W of the vehicle is input to a controller (not shown),
A comparison operation is performed with the hinge bolt position data stored in the controller in advance, and the above-mentioned amount of displacement is used as the support base moving motor 1.
3. The first and second servo motors 17 and 20 are operated to correct the support base 14 in the X, Y and Z axis directions. Then, the socket of the ratchet wrench 21 is fitted to the upper hinge bolt 28 to perform a loosening operation, and then the base plate 21 is shifted downward by the shift cylinder 39 to index the socket of the ratchet wrench 21 to the lower hinge bolt position. and performs work loose fitted socket in the lower part of the hinge bolt 28.

[0015] When the socket is fitted to the hinge bolt 28, some of the phase shift between the socket and the hinge bolt 28, or even if there is a pitch misalignment between the bolt,
Since the ratchet wrench 22 is mounted on the base plate 21 so as to be floatable and balanced in the Y-axis direction and the Z-axis direction, it is automatically absorbed by the floating action and the socket is fitted to the hinge bolt 28 .

The seat in which the socket is fitted to the hinge bolt 28 is confirmed by a hinge bolt seating confirmation proximity switch (not shown), and the socket is switched to high speed rotation to loosen the hinge bolt 28 . By loosening the hinge bolt 28 ,
The ratchet wrench 22 is rotated backward by the screw lead of the hinge bolt 28 around the Z-axis, and the ratchet wrench 22 is checked by the proximity switch for checking the looseness of the hinge bolt.

[0017]

[Effect of the invention] As described above, according to the invention, the X axis, the Y axis
Vertically rotatable on a moving body that can move in the axis and Z-axis directions
Top and bottom mounted on the base plate
X-axis, Y-axis and Z-axis in three-dimensional directions
And a control mechanism for indexing into two positions, up and down, and the ratchet
Proper positioning control of the wrench at the hinge bolt position of the door
To detect the inner hole of the door
Sensor and a contact that contacts the door hinge side surface,
This contact detects the position of the door hinge side surface.
The configuration of the distance sensor relative to the upper and lower hinge bolt of a door from both sides of the body which is positioned by the body positioning apparatus body to remove the door position of the vehicle door being conveyed is attached, the hinge
Some distance between the bolt and the ratchet wrench socket
There is a phase shift or a pitch shift between hinge bolts
In addition, the upper and lower ratchet wrench can be automatically fine- corrected and accurately positioned at a predetermined position, and the door hinge bolts can be automatically loosened, thereby improving the efficiency of door removal work in an automobile assembly line at once. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a schematic explanatory view of a position detecting device.

FIG. 4 is a plan view of a part viewed from an arrow A in FIG. 1;

FIG. 5 is a side view of a Y-axis direction detecting unit.

FIG. 6 is an explanatory view of a conventional door removing operation.

[Explanation of symbols]

 Reference Signs List 5 door 11 base 12 support base 13 support base moving servomotor 14 moving body 17 first servomotor 20 second servomotor 21 base plate 22 ratchet wrench 24 contact 25 distance sensor ring 26 door inner hole 27 visual sensor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B23P 21/00 303 B23P 19/06 B25B 23/04

Claims (1)

(57) [Scope of request for utility model registration] (1)Doors conveyed by conveyor are attached
To the door removal work position of the car body
On both sides of deeMoveable in the X-axis direction on a fixed base
A support table provided on the base, and a left-right movement in the Y-axis direction and a vertical movement in the Z-axis direction.
A moving body that supports movement,A base plate that is provided on this
The rate is mounted on the shift cylinder by the base
A pair of upper and lower parts that are indexed into two upper and lower positions
With a ratchet wrench,  The ratchet train is moved by moving the support table and the moving body.
Position control to the door hinge bolt position
To detect the inner hole of the door
AndThe cylinder moves forward and backward with respect to the door hinge side surface
And always urged in the forward direction by a spring.
A contact that contacts the door hinge side surface;
With the retreat amount of the contact Detects the position of the door hinge side surface
And a moving distance sensor provided on the moving body.
Bolt loosening device for removing car doors.