JPH0450949Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement in a hanger for placing and supporting an object to be coated on a mounting portion and guiding it to a dipping tank for coating.

(Prior Art) Conventionally, as this type of hanger, for example, as disclosed in Japanese Utility Model Application Publication No. 1613/1983, a pair of left and right hanger arm members are used to sandwich the object to be coated from both sides. A so-called double-sided hanger is generally well known, which allows dip coating of objects to be coated by placing the hanger on and supporting it and guiding it to a dipping tank.

In this device, each of the hanger arm members is provided with an anti-floating arm, and when the object to be coated is immersed in the dipping tank, the anti-float arm is placed close to the top surface of the object to be coated and placed inside the dipping tank. It is designed to prevent the object to be coated from lifting up.

(Problem to be solved by the invention) By the way, with the above-mentioned conventional method, when the object to be coated is pulled up from the dipping tank and transferred to the conveyance truck for transport to the next stage of work, there are some particles that adhere to the object to be coated. Excess paint drips onto the transport vehicle, which is unfavorable in terms of environmental hygiene.In order to prevent this, for example, the objects to be coated that have been pulled up from the dipping tank are first moved laterally to a paint receiving station that is separately installed on the side of the dipping tank. Then, the paint receiving station receives the excess paint dripping from the object to be painted, and after the paint stops dripping, the painted object is transported to the next delivery station and delivered to the conveyance truck. is desirable.

However, if such a method is adopted, with the above-mentioned double-sided type hanger, when the object to be coated that has been lifted from the dating tank is moved laterally to the paint receiving station, the hanger arm member on the moving side will get in the way and cause the object to be coated to be moved laterally. It becomes difficult in practice to transfer the painted object to the paint receiving station, and therefore, in order to solve this problem, it is necessary to adopt a so-called cantilever type hanger having one hanger arm member.
However, when using this cantilever hanger, the anti-floating arm that prevents the object from floating can only be installed on one side of the object, so the upper surface of the object can be viewed from both the left and right sides. A new problem arises in that it cannot be held down to prevent it from rising.

The present invention was developed in view of this point, and its purpose is not to press down the object to be painted from above and prevent it from lifting up, but to prevent the object from lifting up from below. By taking appropriate measures to prevent floating,
When the object to be coated is immersed in the dipping tank, even if the hanger is a cantilever type hanger, the object to be coated can be stably placed and supported on the mounting part. The purpose is to ensure that floating can be prevented.

(Means for Solving the Problem) In order to achieve the above object, the present invention targets a hanger for placing and supporting an object to be coated on a mounting portion and guiding it to a dating tank in order to apply coating as described above. , the following solutions were taken.

That is, the solution of the present invention is to provide the above-mentioned mounting portion with a floating prevention means for preventing the object to be coated from floating in the dipping tank. In this case, the floating prevention means is provided with a rod member that is rotatable around an axis and movable up and down and extends in the vertical direction, and is provided eccentrically from the rotational axis of the rod member at the upper end of the rod member. a locking pawl that is engaged with the periphery of a hole formed in advance on the lower surface of the object to be coated by upward movement and rotation of the rod member; an elastic member that constantly urges the rod member downward; an operating lever provided at the lower end of the member, which applies upward force to the rod member against the spring force of the elastic member, and which also applies rotational force around the rotational axis; When the rod member is pushed up and rotated, it engages with the engagement recess formed in the mounting part to ensure the engagement state of the locking pawl, and the rod member rotates around the rotation axis. The present invention is characterized in that it includes a rotation regulating pin that regulates movement.

(Function) With the above configuration, in the present invention, the object to be coated that is placed and supported on the placement portion of the hanger and guided to the dipping tank is engaged with the flotation prevention means at the periphery of the hole formed in advance on the lower surface. Since the retaining claws are engaged, even if the hanger is of a cantilever type, it is reliably prevented from rising from the above-mentioned placement part when immersed in the dipping tank, and a stable placement and support state is ensured. .

Furthermore, when the locking claw engages with the periphery of the hole,
Since the rod member is moved upward and rotated by operating the operating lever, the locking pawl penetrates the hole on the bottom surface of the object to be coated from below and then engages with the periphery of the hole. During this series of operations, the locking pawl does not come into contact with the object to be painted, and the object to be painted is prevented from being damaged by contact with the locking pawl.

In addition, once the locking pawl engages with the periphery of the hole, the rotation regulating pin is in the engagement recess of the mounting section, so the locking pawl will not come off the periphery of the hole unless the operating lever is operated. This ensures that the

In addition, the processing liquid in the dipping process is discharged from the hole in the lower surface of the object to be coated.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

4 and 5 show a cantilever type hanger A for conveying an automobile body B as an object to be painted to an undercoating process for rust prevention treatment, and the hanger A
, a horizontal rod portion 1 extending horizontally at a lower position, a vertical rod portion 2 extending upward from one end (the right end in the figure) of the horizontal rod portion 1, and a vertical rod portion 1 extending from the upper end of the vertical rod portion 2 to the horizontal rod portion 1. Diagonal rod portion 3 extending diagonally upward toward the side
A pair of hanger arms 4, 4 are provided. The horizontal rod portions 1, 1 of the two hanger arms 4, 4 are bridge-connected by two lower horizontal connecting rods 5, 6 extending in a direction perpendicular thereto and parallel to the horizontal direction. 1 and the lower horizontal connecting rods 5 and 6 constitute a rectangular or square frame mounting section 7 located in a horizontal plane, and the body B is placed and supported on the mounting section 7. . Further, the upper ends of the diagonal rod portions 3, 3 of the two hanger arms 4, 4 are bridged and connected by one upper horizontal rod 8 which extends in a substantially horizontal direction and whose longitudinal center portion is curved upward. , 4 are integrally connected by the three horizontal connecting rods 5, 6, and 8 to form a hanger A.

Further, trolley devices 9, 9 (only one is shown in the figure) are provided near both ends of the upper horizontal connecting rod 8, and both trolley devices 9, 9 are connected to each other via respective rollers 9a, 9a. It is rotatably supported by channel-shaped free conveyor rails 10, 10. In addition, both free conveyor rails 1
Both free conveyor rails 1 are above 0 and 10.
Power conveyor rail 1 extending along 0,10
1 is disposed, and the power conveyor rail 11 supports a chain 12.
A plurality of trolley devices 13, 1 traveling along 1
3,... (only one is shown in the figure) are arranged. Then, the bushing dog 14 attached to the chain 12 is engaged with the tilting dog 15 of another trolley device (not shown) disposed in front of the trolley devices 9, 9 on the free conveyor rails 10, 10 side in the conveying direction. The above hanger A is moved to the free conveyor rail 1 by driving.
0 and 10 (power conveyor rails 11), and place the hanger A on the mounting section 7 with the front side facing forward in the conveying direction as shown by the arrow in FIG. It is designed to be placed and supported on the substrate and guided to a dipping tank (electrodeposition coating liquid tank) 16 for the undercoating process.

Furthermore, as a feature of the present invention, the mounting portion 7 of the hanger A is specifically a horizontal rod portion of the hanger arm 4 (the upper one in FIG. 5) that supports the front side of the body B of the two hanger arms 4, 4. As shown in enlarged detail in FIGS. 1 to 3, near both ends of 1, the holes b ₂ are inserted into and engaged with pre-formed paint removal holes b _{2 on the lower surface of the body B, that is, the front underfloor b 1} . Floating prevention means 17, 17 for preventing body B from floating in the dipping tank 16
are arranged via brackets 18, respectively.

Each floating prevention means 17 includes a vertical U-shaped rod support 19 fixed to the upper surface of the bracket 18, and a first rod support 19 is provided on the upper surface of the support 19.
A keyhole-shaped through-hole 20 having a slit-shaped overhanging hole _20a extending leftward in FIGS. Through hole 21 to force
is formed in both the through holes 20, 21, and a rod member 22 for rotation operation extending in the vertical direction has its tip (upper end) protruding from the upper surface of the support base 19, and rotates around the axis of the through holes 20, 21. It is fitted and supported so as to be rotatable around the center line of the hole. Further, a first positioning engagement recess 23 is formed on the upper surface of the support base 19 at a position facing the overhanging hole 20a of the through hole 20 and is continuous with the through hole 20, while a first positioning engagement recess 23 is formed on the upper surface of the bracket 18. is the second positioning engagement recess 2
4 is formed directly below the first positioning engagement recess 23 and continuous with the through hole 21 .

On the other hand, at the upper end of the rod member 22, a truncated conical locking pawl 25 is set to have a diameter larger than the diameter of the through hole 20 of the support base 19 and smaller than the diameter of the hole _b2 of the body B. The center is the rod member 22
It is fixed at an eccentric position a distance l from the axis of rotation. Further, near the upper end of the rod member 22, there is a first rotation regulating pin 26 that protrudes radially outward (left side in FIG. 1), and below the first rotation regulating pin 26, there is a side ( Second rotation regulating pins 27 protruding to the right in FIG. 1 are each fixed integrally. Further, the lower end base of the rod member 22 is operated by a robot (not shown) to apply an upward pushing force to the rod member 22 against the spring force of a spring 29, which will be described later, and also to apply a rotational force around the rotation axis. A lever 28 is bored radially outwardly, and the rod member 2
The lower half of the spring 2 serves as an elastic member.
9 is compressed, and the upper end of the spring 29 is attached to the lower surface of the bracket 18, and the lower end is attached to the rod member 2.
The two lower ends are brought into contact with the upper surface of the base, respectively, and the rod members 22 are constantly urged downward by their spring force.

When the body B is not placed and supported on the placing portion 7 of the hanger A, the second rotation regulating pin 27 of the rod member 22 is rotated as shown by solid lines in FIGS. 1 to 3. The mounting portion 7 is engaged with the second positioning engagement recess 24 of the bracket 18.
The rod member 22 is rotated about the rotation axis so that the locking pawl 25 of the rod member 22 can be inserted into the hole _b2 of the underfloor _b1 when the body B is placed on the body B. It is designed to lock and regulate the In this state, the rod member 2
The first rotation regulating pin 26 of No. 2 is located inside the support base 19 directly below the overhanging hole portion 20a of the through hole 20, and prevents interference with the upper surface of the support base 19 when the rod member 22 moves upward. Avoided.

On the other hand, when the body B is mounted and supported on the mounting portion 7 of the hanger A for painting, the rod member 22 is pushed up by the pushing up action of the robot, as shown by the imaginary lines in FIGS. 1 to 3. Spring 2
The second rotation regulating pin 27 is moved upwardly against the spring force of the second rotation regulating pin 27 relative to the second positioning engagement recess 24.
At the same time, the locking claw 25 is released from the engaged state.
into hole _b2 of body B. Then, the rod member 22 is rotated by the subsequent rotational movement of the robot.
After rotating 180° counterclockwise, the robot pulls down the locking pawl 25 into the hole in body B.
The first rotation regulating pin 26 is locked to the periphery of b ₂ and moved above the support base 19 through the overhanging hole 20a by the push-up operation by the robot.
is engaged with the first positioning engagement recess 23 on the upper surface of the support base 19, and the rod member 22 is rotated about the rotation axis in order to ensure that the locking pawl 25 is engaged with the periphery of the hole b ₂ of the body B. It is designed to lock and regulate the When body B is to be lowered from hanger A after painting is completed, the robot is operated in the opposite direction to the above-mentioned operation to release the locking pawl 25 from the periphery of hole b ₂ of body B. To do this.

In this way, in this embodiment, the floating prevention means 1 is lifted up by the lifting action of the robot against the body B placed and supported on the mounting portion 7 of the hanger A to be painted.
Move each rod member 22 of 7 and 17 upward and insert each locking pawl 25 into each paint removal hole b ₂ of the front side underfloor b ₁ of body B, and then, by the rotational movement of the robot. After each of the rod members 22 has been rotated 180 degrees around the rotation axis, the robot moves each rod member 22 downward by the pulling operation, and the locking claws 25 are inserted into the holes in the underfloor _b1 .
Since the body _B is locked to the peripheral edge of the front side underfloor b 1, the body B can be stably supported by being placed on both sides of the front side underfloor b ₁ in the vehicle width direction without shifting against the placement part 7 of the hanger A. Even when immersed in the dipping tank 16, floating from the placement portion 7 can be reliably prevented.

Furthermore, when the locking pawl 25 engages with the periphery of the hole _b2 , the rod member 22 is moved upward and rotated by operating the operating lever 28, so that the locking pawl 25 engages with the hole on the lower surface of the body B. After penetrating b ₂ from below, it engages with the periphery of hole b ₂ , thereby avoiding contact of the locking pawl 25 with body B during this series of operations, thereby preventing damage to body B. can.

Furthermore, in order to remove the once engaged locking pawl 25 from the periphery of the hole b ₂ , the rotation regulating pin 26 must be removed from the engagement recess 23 of the mounting portion 7 by operating the operating lever 28 . During this time, engagement can be ensured.

In addition, the holes b ₂ and b ₂ of the underfloor b ₁ are existing holes for removing paint, so when adopting the hanger A of this embodiment, holes are formed separately. This has the advantage that there is no need for this, and the effort of forming holes can therefore be saved.

In addition, in the above embodiment, two floating prevention means 1
7 and 17 are provided only on one of the hanger arms 4, 4, but the present invention is not limited to this, and for example, both hanger arms 4,
It is also possible to provide all four.

Further, in the above embodiment, the object to be painted is the car body B, but it is not limited to this, and it may be the body of another vehicle or other object to be painted, and even a hanger. Needless to say, it is not limited to a single-sided type, and may be a double-sided type.

Furthermore, the holes on the lower surface of the object to be painted are not limited to the case where existing holes are used, but it is also possible to form holes in the object in advance in correspondence with the locking claws 25 of the floating prevention means 17.

(Effects of the invention) As explained above, according to the invention, a floating prevention means for preventing the floating of the object to be coated is provided on the placing part for placing and supporting the object to be painted, and the floating prevention means is installed. Since it is inserted into a pre-formed hole on the underside of the object to be coated, the object to be coated can be hung on a hanger by the locking action of the flotation prevention means on the object. Therefore, even if the object to be coated is mounted and supported on the above-mentioned mounting portion and guided to the dipping tank, it is possible to reliably prevent the object from floating up. Furthermore, when the locking claw engages with the periphery of the hole,
Since the rod member is moved upward and rotated by operating the operating lever, the locking pawl can be prevented from coming into contact with the object to be painted during this series of operations, and damage to the object to be painted can be prevented. . Further, once engaged, the locking pawl does not come off the periphery of the hole unless the operating lever is operated, so that the locking pawl can be reliably engaged. In addition, the holes on the lower surface of the object to be coated can be used as holes for discharging the treatment liquid during dipping treatment.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an enlarged vertical front view of the floating prevention means, Fig. 2 is an enlarged side view of the same, Fig. 3 is an enlarged plan view of the same, and Fig. 4 is a side view of the hanger. FIG. 5 is a plan view of the same. 7... Placement section, 16... Dipping tank, 17
...Floating prevention means, 22... Rod member, 23...
...Engagement recess, 25...Latching pawl, 26...First rotation regulating pin, 28...Operation lever, 29...Spring (elastic member), A...Hanger, B...Body (object to be painted) ), b ₁ ... under floor, b ₂ ... hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A hanger A for placing and supporting an object B to be coated on a placing portion 7 and guiding it to a dipping tank 16, wherein the placing portion 7 includes a dipping tank 16. A floating prevention means 17 is provided to prevent the object B from floating inside the surface, and the floating prevention means 17 is provided to be rotatable around an axis and movable up and down, and includes a rod member 22 extending in the vertical direction. , is provided at the upper end of the rod member 22 so as to be eccentric from the rotational axis of the rod member 22, and by the upward movement and rotational movement of the rod member 22, a hole B2 is formed around the pre-formed hole _B2 on the lower surface of the object B to be coated. A locking pawl 25 that is engaged, an elastic member 29 that always urges the rod member 22 downward, and an elastic member 29 that is provided at the lower end of the rod member 22 and forces the rod member 22 to resist the spring force of the elastic member 29. an operating lever 28 that applies an upward pushing force and a rotational force around the rotational axis;
The rod member 22 is engaged with the engagement recess 23 formed in the mounting portion 7 to ensure the engagement state of the locking pawl 25.
Rotation regulation pin 2 that regulates rotation around the rotation axis of
6. A hanger used in a painting process, characterized by comprising: