JP2984426B2 - Automotive cover parts switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device for opening / closing an automobile cover part such as a hood and a trunk lid.
More particularly, the present invention relates to a cover part opening / closing device suitable for use in an automatic painting process of an automobile body.

[0002]

2. Description of the Related Art As a coating process for an automobile body, there is a so-called inner plate coating in which a back surface of a cover part such as a hood or a trunk lid is coated. In such inner plate coating, it is necessary to keep the cover part at a fixed opening angle. For example, Japanese Utility Model Laid-Open No. 60-148187 discloses that a link mechanism and a spring are mounted on a truck on which an automobile body is mounted. There is disclosed a technology in which a foldable opening / closing jig made of is installed, and the opening / closing jig is erected to hold a cover component from below. However, according to the technique disclosed in this publication, not only the opening and closing jig but also the opening operation of the cover part must be performed manually, and application to automatic painting is almost impossible.

[0003] Recently, a cover part opening / closing jig is held at the wrist at the tip of the arm of the robot, and the cover part opening / closing robot and the painting robot are arranged in a painting booth. The two robots are moved synchronously with respect to the moving vehicle body, the cover part is first opened by the cover part opening / closing robot, and this is held at a fixed opening angle. A fully automatic coating system that sprays paint has been put to practical use.

[0004]

The opening / closing jig of the cover part opening / closing robot has a plate hook shape so that it can be inserted into a gap between the fixing part of the vehicle body and the cover part. Was. For this reason, the contact area of the opening / closing jig with the cover component is relatively large, and a considerably large unpainted portion is generated at the contact portion, and there is a problem that the repair requires much man-hour and time. Also, since the amount of paint that adheres and accumulates on the opening and closing jig for each coating is large,
A problem that paint dripping easily occurs, the opening and closing jig is moved by a robot to a separately installed cleaning device, and paint removal (cleaning) work must be performed frequently, and productivity cannot be improved as desired. There was also.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to greatly reduce unpainted areas and greatly reduce the time required for removing paint. An object of the present invention is to provide an opening / closing device for a cover part of an automobile which greatly contributes to improvement of productivity.

[0006]

In order to achieve the above object, the present invention provides a jig body provided on a wrist at the tip of a robot arm, which is provided with a slider which reciprocates by a driving means. A cleaning device that supports one end of a rod-shaped member having a circular or approximately circular cross section that extends in the direction of movement, and that has a flexible porous member on the jig body that comes into contact with the peripheral surface of the rod-shaped member that moves with the slider. Is supported.

[0007]

In the cover part opening / closing device for an automobile constructed as described above, the rod-like member is extended by moving the slider, whereby the rod-like member is inserted into the gap between the fixing part of the vehicle body and the cover part. The cover part can be opened. Thus, the contact area of the rod-shaped member with the cover component is reduced due to the circular or nearly circular shape of the cross-section of the rod-shaped member, and the unpainted area becomes extremely small. Moreover, since the paint adhered to the rod-shaped member is wiped off by the porous member while the rod-shaped member is moved from the extended state to the contracted direction, the paint can be removed from the rod-shaped member without relying on the robot operation.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. In these figures, 1 is a painting booth, 2 is a conveyor for transporting an automobile body W arranged in the painting booth 1, 3 is a cover part opening / closing robot arranged on the side of the conveyor 2, and 4 is a robot. 3 is an opening / closing jig attached to the wrist 6 at the tip of the third arm 5. The cover part opening / closing robot 3 includes a base 8 movably mounted on a rail 7 laid along the transfer conveyor 2 and a support 9 extending upward from the base 8.
In addition, the elevating body 10 provided on the column 9 so as to be able to move up and down supports the base end of the arm 5 (FIG. 2). In addition, a painting robot (not shown) is arranged in the painting booth 1 in addition to the cover part opening / closing robot.

A lifting / lowering body 10 provided on a support 9 of the cover part opening / closing robot 3 is vertically mounted on the support 9 and a motor 11 is provided.
The screw is screwed to the ball screw 12 which is driven to rotate, and moves up and down arbitrarily according to the rotation of the ball screw 12. The arm 5 of the robot 3 extends in the horizontal direction, and includes a rotating shaft 13 that supports the wrist 6 and a motor (servo motor) 14 that drives the rotating shaft 13 to rotate. The opening / closing jig 4 is provided so as to extend in a direction orthogonal to the rotating shaft 13. Therefore, the opening / closing jig 4 moves up and down between the solid line position and the broken line position in FIG. By operation, it can swing in a vertical plane perpendicular to the rotation shaft 13. A work detection mechanism 15 for detecting a load applied to the opening and closing jig 4 and an overload detection mechanism 16 for detecting an overload applied to the opening and closing jig 4 are provided in the middle of the rotating shaft 13. (Fig. 2).

As shown in FIGS. 1 and 3, the opening / closing jig 4 includes a rectangular frame-shaped jig body 21 and a jig body 21.
And a cleaning device 24 connected to a front portion of the jig body 21. The rod member 23 has a circular or approximately circular cross section (for example, an elliptical shape) whose one end is supported by a slider 22 described later. I have.

A guide rail 26 is provided in the jig body 21 using a bracket 25 in the longitudinal direction thereof, and the slider 22 is slidably connected to the guide rail 26. A rodless cylinder 27 is provided in the jig body 21 in parallel with the guide rail 26, and the slider 22 is also connected to the rodless cylinder 27. That is, the slider 22 can reciprocate along the guide rail 26 by the operation of the rodless cylinder 27. A guide plate 28 having a through hole 28a at the center is fixed to one end (tip) of the jig main body 21 using a bolt 29 (FIG. 3). It is inserted through the through hole 28a. The rod-shaped member 23 has its base end fitted and held on the slider 22, and the tip end of the rod-shaped member 23 is located in the through hole 28a at the retreating end of the slider 22.

On the other hand, the cleaning device 24 has a cylindrical housing 30. The housing 30 is mounted on a mounting plate 32 fixed to the guide plate 28 using bolts 31 (FIG. 3) using an annular connecting member 33. The connecting member 33 includes a screw portion 33 that can be screwed to a screw portion 32a formed on the outer periphery of the mounting plate 32.
a at its one end and an inward flange 32b which can be engaged with an outward flange provided at one end of the housing 30. Therefore, if the connecting member 33 is fitted into the housing 30 in advance and the connecting member 33 is screwed into the mounting plate 32, the housing 30 is firmly fixed to the mounting plate 32, and the housing 30 is mounted. Removal from the plate 32 is very simple. A through hole 32c is formed in the center of the mounting plate 32 to allow the rod 23 to pass therethrough.

A partition plate 34 is integrally provided in the housing 30. The partition plate 34 is divided by the partition plate 34 into a mounting plate.
In one room on the side opposite to 32, multiple (three in this case)
The disk-shaped porous member 35 is stored. This porous member
35 is a flexible material, such as sponge, cloth,
It is made of paper or the like, and has a through hole 35a having a diameter slightly smaller than the outer diameter of the rod-shaped member 23 at the center thereof. The partition plate 34 has a large-diameter central hole 34a and a concave portion 34b facing the central hole. A scraper 36 is fitted in the concave portion 34b. The scraper 36 has a through hole 36a having a diameter slightly larger than that of the rod-shaped member 23 at the center thereof, and the concave portion 34b
The exit from is regulated. The through hole 36a of the scraper 36 has a tapered portion on the side corresponding to the bottom of the concave portion 34b.
36b. A lid 38 is attached to the opening at the tip of the housing 30.

Hereinafter, the operation of the cover part opening / closing device for an automobile configured as described above will be described with reference to FIGS.

At the time of painting, the rod-like member 23 of the opening / closing jig 4 is previously set in an extended state, and the opening / closing jig 4 is retracted to the upper broken line position shown in FIG. . When the vehicle body W is now transported to a predetermined position in the painting booth 1 by the transport conveyor 2, the base 8 of the robot 3 moves in synchronization with the transport conveyor 2 by the operation of the traveling drive means (not shown). At the same time, the opening / closing jig 4 is lowered by the operation of the motor 11 in the base 8. At this time, a painting robot (not shown) also moves in synchronization with the conveyor 2.

At first, the opening / closing jig 4 is set in a substantially horizontal state with the bar-shaped member 23 facing the vehicle body W, and the movement of the base 8 is slightly reduced in this state. Then, as shown in FIG. 4, the tip of the bar-shaped member 23 of the opening / closing jig 4 is inserted into a gap between the fixing portion of the automobile body W and the cover component (hood in this case) Wa. The opening and closing jig 4 is raised by the operation of the motor 11 in the base 8, and the opening and closing jig 4 is rotated by the operation of the motor 15 in the arm 5.
Turn around. Then, as shown in FIG. 5, the cover component Wa is gradually opened, and when the cover component Wa is opened by a predetermined angle, the base 8 moves again in synchronization with the transport conveyor 2 and at the same time, the opening and closing jig 4 Ascent and turning are stopped. As a result, the cover component Wa is held at a predetermined opening angle, and a coating robot sprays paint on the back surface of the cover component Wa to perform coating.

After the painting is completed, the speed of the base 8 of the robot 3 is slightly increased from that of the conveyor 2, and at the same time, the base 8
The opening and closing jig 4 is lowered by the operation of the motor 11 in the inside, and the opening and closing jig 4 is operated by the operation of the motor 15 in the arm 5.
Turns in the opposite direction. Then, when the entire opening / closing jig 4 returns to the initial state with respect to the vehicle body W, the opening / closing jig 4 rises greatly by the operation of the motor 11 in the base 8 and returns to the broken line position (original position) shown in FIG. Then, at the same time, the base 8 is returned to the original position by the operation of the traveling drive means, whereby a series of inner plate coating is completed.

While the opening / closing jig 4 returns to the original position, the slider 22 is retracted by the operation of the rodless cylinder 27, and the rod 23 is moved from the cleaning device 24 to the jig main body 21.
It is drawn in. At this time, the paint adhered to the peripheral surface of the rod-shaped member 23 is first scraped off by the scraper 36 in the cleaning device 24, and then wiped off by the porous member 35. Thereafter, the rod-shaped member 23 returns to the original extended state by the re-activation of the rodless cylinder 27, and is prepared for painting of the next automobile body, but since the previous paint has been removed from the peripheral surface of the rod-shaped member 23. The next car body may have a different color. In addition, since the paint can be sufficiently removed by one reciprocation of the rod-shaped member 23 without depending on the operation of the robot 3, there is no need to set a special cleaning step for removing the paint, and the productivity is greatly improved. In addition, due to the specific shape of the rod-shaped member 23 having a circular or approximate circular cross section, the contact area of the rod-shaped member with the cover component is reduced, the unpainted area is extremely small, and the number of steps required for repair can be minimized. . In the first embodiment, in particular, the porous member
Since the scraper 36 is disposed at the front of the block 35, the large lump of paint adhered to the rod-shaped member 23 is removed by the scraper 36, and the contamination of the porous member 35 is suppressed, and the number of times of use thereof is extended as much as possible.

FIGS. 6 and 7 show a second embodiment of the present invention. The same parts as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted. The feature of the second embodiment is that the thinner inlet 40 and the thinner outlet 40 are located above and below the housing 30 of the cleaning device 24.
A point 41 is provided, and a first hose 42 extending from a thinner supply source (not shown) is connected to the inflow port 40, and a second hose 43 extending from a thinner recovery tank 43 is connected to the outflow port 41. . Each hose is routed using an appropriate guide means 44 so as to follow the movement of the robot 3. The first hose 42 is provided with a pilot valve 45 for opening and closing the thinner supply circuit and a regulator 46 for adjusting the amount of thinner supplied.
45 is attached to the robot arm 5. The second supply hose 43 is provided with a pilot ejector 47 for discharging dirty thinner to the outside.

In the second embodiment, when the pilot valve 45 and the pilot ejector 47 are actuated by the operation completion signal of the robot 3, the thinner supplied to the first hose 42 flows through the housing 30 of the cleaning device 24. The liquid is supplied from the inlet 40 to the internal porous member 35. As a result, the paint adhered to the peripheral surface of the rod-shaped member 23 drawn into the jig main body 21 after the painting is wiped off by the porous member 35 and washed away by the thinner. The paint is more reliably removed from the peripheral surface. Moreover, since the removed paint is dissolved in the thinner and collected in the thinner collection tank 43 from the lower outlet 41 by the second hose 43, the dirt on the porous member 35 in the cleaning device 4 is extremely reduced. The need for frequent replacement is eliminated.

In the above two embodiments, the porous member is used.
Although a scraper 36 is provided at the front of 35, this scraper may be omitted.

[0023]

As described in detail above, according to the cover part opening / closing apparatus for an automobile according to the present invention, a jig for directly opening / closing the cover part is formed by a rod-shaped member having a circular or approximately circular cross section. Since the rod-shaped member is formed, the contact area of the bar-shaped member with the cover component is reduced, the unpainted portion is extremely reduced, and the number of steps required for repair can be greatly reduced. Further, the rod-shaped member is movable, and the jig body supports a cleaning device having a flexible porous member capable of contacting the peripheral surface of the rod-shaped member. The adhesive paint can be wiped off from the peripheral surface of the member, and the rod-shaped member can be cleaned without relying on the robot operation, which greatly contributes to the improvement of productivity.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a structure of an opening / closing jig in a cover part opening / closing apparatus for a vehicle according to the present invention.

FIG. 2 is a front view showing the entire structure of the cover component opening / closing device according to one embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view showing a main part of the opening and closing jig shown in FIG.

FIG. 4 is a schematic view showing a use mode of the cover component opening / closing device.

FIG. 5 is a schematic diagram showing a use mode of the cover component opening / closing device.

FIG. 6 is a front view showing the entire structure of a cover part opening / closing device according to another embodiment of the present invention.

7 is a cross-sectional view showing a structure of an opening / closing jig in the cover component opening / closing device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Painting booth 2 Conveyor of automobile body 3 Robot 4 Opening / closing jig 5 Arm part 6 Wrist part 21 Jig body 22 Slider 23 Bar member 24 Cleaning device 30 Housing 35 Porous member 36 Scraper W Automotive body

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Junji Ito 4-1-1 Hinomachi, Nada-ku, Kobe City, Hyogo Prefecture (72) Inventor Katsuhiko Goto 4-1-1 Hinomachi, Nada-ku, Kobe City, Hyogo Prefecture (56) References JP-A-59-128061 (JP, A) JP-A-58-98161 (JP, A) JP-A-2-28071 (JP, A) JP-A-4-26072 (JP, U) ( 58) Fields surveyed (Int. Cl. ⁶ , DB name) B05C 13/00-13/02 B05B 13/02 B62D 65/00

Claims (1)

(57) [Claims] 1. A jig body provided at a wrist portion of an end of an arm of a robot is provided with a slider which reciprocates by a driving means, and the slider is provided with a rod-shaped member having a circular or approximately circular cross section which extends in the direction of the movement. An opening / closing device for a cover part of an automobile, wherein the cleaning device has one end supported and a cleaning device having a flexible porous member that contacts the peripheral surface of the rod-shaped member that moves with the slider on the jig body. .