JPH0338184Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a hanger used in a surface treatment device that has a function that can automatically detect whether or not the hanger is properly engaged with the hanger support arm. The present invention relates to a conveyance device.

(Prior art) A hanger conveying device in a surface treatment equipment raises and lowers the hanger using a hanger support arm, but the operator visually confirms whether or not the hanger has been properly engaged. It takes time for the person to stop the lifting cart after discovering an abnormality, or in some cases, the person may overlook the abnormality and cause the object to be processed suspended on a hanger to fall into the processing tank. There was a problem.

(Problems to be solved by the invention) The present invention solves the conventional problems as described above, and can automatically detect whether the hanger is properly engaged, and can also detect abnormalities. This device was developed for the purpose of providing a hanger conveyance device in a surface treatment apparatus, which can promptly stop the vertical movement of the lifting cart when a detection is detected, thereby preventing the object to be treated from falling.

(Means for Solving the Problems) The present invention is designed to engage the hook portions of the hanger that are engaged with the locking portions at both ends of the hanger support arms of the lifting cart, which is attached to the lifting guide so as to be able to rise and fall freely. An elevating cart is provided with an engagement detection device for detecting the engagement, and operates the engagement detection device only when the engagement portion of the hanger support arm is located above the engagement position height with the hook portion of the hanger on the processing tank. It is characterized by being equipped with a height detection device.

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

Reference numeral 1 denotes an elevating guide that can move above the processing tank 2, and the elevating guide 1 is vertically installed at the lower end of a transport vehicle 4 that is movable on a traveling rail 3 installed above the processing tank 2. It is movable on the processing tank 2. Reference numeral 5 denotes an elevating cart that moves up and down on the elevating guide 1, and on both sides of a hanger support arm 6 provided in front of the elevating cart 5, locking portions 7 having a chevron-shaped cross section,
7 is provided, and on the top portions 8, 8 there is a hook detection device for detecting the hooking state of hook portions 11, 11, which have a chevron-shaped cross section and are provided above both left and right ends of the hanger 10 for hanging the object to be processed 9. 12, 12 are provided. A limit switch or the like can be used as the engagement detection device 12.
As shown in FIG. 9, two may be provided on both inclined surface portions 8a, 8a of the locking portion 7 having a chevron-shaped cross section.

13, the locking part 7 of the hanger support arm 6 is connected to the processing tank 2.
This is a height detection device for a lifting cart that operates the engagement detection device 12 only when the platform is located above the height of the engagement position with the hook portion 11 of the hanger 10 located above. This detection device 13 issues an alarm when the locking portion 7 of the hanger support arm 6 is located above the engagement position with the hook portion 11 of the hanger 10 and any one of the engagement detection devices 12 does not detect engagement. It is also a device that automatically stops the vertical movement of the lifting carriage 5. Although its configuration is free, for example, a detector 15 such as a limit switch for detecting the detected plate 14 attached to the lifting carriage 5 is installed on the lower side of the lifting guide 12. It can be installed.

(Function) In this structure, the locking portions 7, 7 provided on both sides of the hanger support arms 6 of the lifting cart 5 are connected to the hook portions 11, 11 of the hanger 10 on which the object to be processed 9 is suspended. After engaging, the lifting cart 5 is raised along the lifting guide 1, and the transport cart 4 is moved to the processing tank 2.
The object to be processed 9 suspended from the hanger 10 is processed by traveling along the traveling rail 3 installed above and reaching the predetermined processing tank 2, and then lowering the elevating cart 5 along the elevating guide 1. Immersion in the tank 2 is similar to the hanger conveying device in conventional surface treatment equipment of this type. However, in the device according to the present invention, as shown in FIGS. 5 and 6, the object 9 to be processed sways while moving on the lifting guide 1 and descends while shaking at the stop position, and the partition plate 2a of the processing tank 2
The hook portion 1 of any one of the hangers 10 that suspends the object 9 by contacting the object 9
1 and 11 are disengaged from the locking parts 7 and 7 provided on both sides of the hanger support arm 6, the engagement detection device 12 provided on the locking parts 7 is activated to issue an alarm and the lifting trolley Immediately and automatically stop the descent of 5. As a result, as shown in FIG. 6, the hook part 11 does not completely disengage from the locking part 7, so the object 9 to be processed does not fall, and the alarm causes the operator to take immediate recovery work. This has the advantage that shutdowns of the surface treatment line can be minimized. Further, as shown in FIG. 7, when the locking part 7 is displaced from the lower part of the hook part 11 due to an incorrect stop position of the lifting guide 1, and the workpiece 9 is pulled up incorrectly, the locking part 7 is moved to the hook part 11.
It is detected that the hook portion 11 is not engaged with the locking portion 7 at the time when the hook portion 11 is located above the engagement position height, and the elevating cart 5 automatically stops and the empty elevating cart 5 is stopped.
There is no inconvenience of having to move it up and down as it is. Furthermore, as shown in FIG. 8, the V-shaped legs 10a of the hanger 10 suspend the workpiece 9 due to an incorrect stop position of the lifting guide 1 when the workpiece 9 is immersed in the processing tank 2 after being moved. is the V of treatment tank 2
When the lifting cart 5 is lowered off the center of the mold pedestal 2b, the descent of the hanger 10 is also stopped when one or both of the legs 10a of the hanger 10 gets caught on the upper end of the pedestal 2b. The engagement of the locking part 7 with the hook part 11 is released, but when it is detected that the engagement is released, the lifting cart 5 immediately stops automatically and an alarm is issued. 7 will not come off completely from the hook portion 11, and the operator can take immediate countermeasures.

(Effects of the invention) As is clear from the above explanation, the invention has the following effects:
If the hook portion of the hanger is abnormally engaged with the locking portions formed on both sides of the hanger support arms provided on the lifting cart, the lifting and lowering movement of the lifting cart can be stopped and an alarm can be issued. Restoration work is easy because there is no risk of objects falling, and workers can start restoration work immediately, reducing downtime. In addition, this engagement detection device is activated only when the locking part of the hanger support arm of the lifting cart is above the height of the engagement position with the hanger hook part on the processing tank, so it is difficult to attach or remove the hanger during normal operation. It doesn't even work. Therefore, the present invention has great practical value as it eliminates the problems of the hanger conveying device in the conventional surface treatment apparatus of this type.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a partially cutaway side view, Fig. 3 is a partially cutaway side view with the hanger raised, and Fig. 4 is a partially cutaway side view showing an embodiment of the present invention.
The figure is a partially cutaway side view of the main part, Figure 5 is a partially cutaway front view showing the state in which the processed material shakes when the hanger is lowered and comes into contact with the partition plate of the processing tank, and Figure 6 is a partially cutaway side view. Figure 7 is a side view of the main part showing the situation where the workpiece was pulled up incorrectly due to the incorrect stop position of the lifting guide, and Figure 8 is a side view of the main part showing the situation where the workpiece was pulled down incorrectly due to the incorrect stopping position of the lifting guide. FIG. 9 is a partially cutaway side view showing another embodiment of the engagement detection device. DESCRIPTION OF SYMBOLS 1... Lifting guide, 5... Lifting cart, 6... Hanger support arm, 7... Locking part, 10... Hanger, 11... Hook part, 12... Engagement detection device, 1
3...Height detection device for lifting cart.

Claims (1)

[Scope of utility model registration request] The hook portions 11, 11 of the hanger 10 are engaged with the locking portions 7, 7 at both ends of the hanger support arm 6 of the lifting cart 5, which is attached to the lifting guide 1 so as to be able to rise and fall freely. Engagement detection device 12 to detect
and the hook part 1 of the hanger 10 where the locking part 7 of the hanger support arm 6 is on the processing tank 2.
1. A hanger conveying device in a surface treatment apparatus, characterized in that a height detecting device 13 for an elevating cart is provided, which activates the engaging detecting device 12 only when the cart is located above the height of the engaging position with the lifting cart.