JP2572834Y2 - Liquid tank cover mechanism in metal surface treatment equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a metal surface treatment apparatus having a plurality of treatment liquid tanks, wherein a material to be treated is sequentially inserted into the treatment liquid tank to perform immersion treatment. The present invention relates to a mechanism for covering a transport frame for suspending and holding a material to be processed with a lid plate when a tank is inserted.

[0002]

2. Description of the Related Art For example, when a long shape material for an aluminum sash is subjected to alumite (registered trademark) treatment, a large number of aluminum shape materials to be processed are suspended and held on a transfer frame and moved over a series of treatment liquid tanks. It is transported by a freely provided crane, and it is moved up and down for each transport frame. Each processing liquid tank such as a degreasing tank, etching tank, neutralization tank, electrolytic tank, etc. arranged alternately with washing tanks The entrance / exit tank is repeated sequentially according to In this surface treatment step, for example, as for the anodic oxidation treatment liquid tank 20 shown in FIG.
B, 21C, a plurality of rows of aluminum mold members to be treated 22C
A, 22B, and 22C are sequentially put into the tank, and are sequentially removed from the tank at predetermined time intervals, and are moved to the next step.

[0003]

However, when a plurality of aluminum mold materials 22A, 22B and 22C to be treated are put into and taken out of the treatment liquid tank 20 without intervening a washing tank, the removed tanks are removed. Treated aluminum profile 2
While the 2A is being transported to the next step by a crane (not shown), the droplets 2
3 or a transfer frame 21B for the aluminum mold members 22B and 22C to be treated, which is contained in the front in the traveling direction as a liquid flow.
The transfer frame 2 is dropped or dropped on the 21C and wetted.
There was a problem of corroding 1B and 21C.

For this reason, attempts have been made to cover the transfer frame 21 with a cover plate while the aluminum mold member 22 to be processed is being placed in the tank. In the opening / closing means of the lid plate, a motor or an air cylinder is installed as a power on the processing tank, and the input / output tank of the aluminum material to be processed or the transfer frame is detected by a sensor, and the opening / closing operation can be performed by a signal thereof. . However, such an opening / closing means requires a power source and a detection signal circuit individually for each lid plate, and a mechanism such as an interlock mechanism is required to prevent malfunction due to an electrical cause or the like. Become complex and expensive,
There was a problem.

The present invention has been made in consideration of the above-mentioned problems, and does not use complicated and expensive means including such a power and a sensor. It is an object of the present invention to provide a cover mechanism in a metal surface treatment liquid tank for prevention.

[0006]

In order to achieve the above-mentioned object, the present invention provides a transport frame in which a metal material to be processed is suspended and held by a crane so as to be able to move up and down. In a metal surface treatment apparatus immersed in a plurality of processing liquid tanks, a rotation support shaft rotatably supported on an upper portion of the processing liquid tank, and fixed to an end portion of the rotation support shaft and moved up and down A lever that abuts on the transport frame and rotates vertically, a lid plate that is fixed to the center of the rotation support shaft, rotates together with the lever, and opens and closes on the transport frame; The present invention proposes a liquid tank cover mechanism in a metal surface treatment apparatus which is fixed to an end of the rotation support shaft, and which includes a weight for urging the lever and the cover plate to rotate in the opening direction of the cover plate. is there.

[0007]

When the metal part to be processed is lowered together with the transport frame when the processing liquid tank is empty, the end portion of the lowered transport frame comes into contact with the lever, and the rotating biasing force of the weight is applied. In the engaged state, the lever is pivoted downward about the pivot shaft. With the rotation of the lever, the cover plate also rotates downward and closes to cover the transport frame stopped at a predetermined position. In this state, even if another metal material to be processed passes while the adhesion processing liquid is dropped or dropped on the upper part, the droplet or liquid flow falls on the lid, so that the transport frame does not get wet.

Further, when the transport frame is raised when the metal material to be treated is in the bath immersion state, the lever is urged in the opening direction of the lid plate by the weight, so that the lever follows the transport frame ascending. Then, the lid rotates upward, and at the same time, the lid body opens upward. When the transfer frame and the lever are disengaged from each other, the lid is sufficiently opened by the urging force of the weight, so that there is no hindrance to removing the metal material to be processed and entering a new metal material to be processed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the liquid tank cover mechanism of the present invention will be described below. FIG. 1 is a front cross-sectional view of a metal surface treatment liquid tank provided with a liquid tank cover mechanism of the present invention, and FIGS. 2 and 3 are enlarged side cross-sectional views of essential parts showing an operation state of the liquid tank cover mechanism of FIG. is there.

Reference numeral 1 denotes a processing solution tank for anodizing an aluminum material. The processing solution tank 1 contains an acidic electrolytic processing solution 2, and a cathode bar 4 is mounted on the processing solution tank 1 via a gantry 3. And anodizing treatment can be performed using the aluminum material 5 to be treated as an anode. A pair of screen-like insertion guides 6 is arranged on the upper part of the treatment liquid tank 1. A cradle 8 is attached. Such a treatment liquid tank 1 is a known one.

The cover mechanism 9 of the present invention includes a pivot 10
And a lever 11 fixed to the pivot 10, a weight 12, and a cover plate 13, and the cover plate 13 is attached so as to open and close the opening 14 between the insertion guides 6 and 6. That is, the rotation support shaft 10 is supported at both ends thereof by bearings (not shown) installed on a gantry along the insertion guide 6 on one side so that the rotation support shaft 10 is at an intermediate level position of the insertion guide 6, and is rotatable. is there. A lever 11 and a weight 12 are attached to both ends of the rotation support shaft 10 outside the position of the insertion guide 6 in a substantially symmetrical direction with the rotation support shaft 10 interposed therebetween. The lever 11 has a length sufficient to allow the transfer frame 7 to abut when the aluminum material 5 to be processed descends and enters, and the weight 12 is attached to the tip of the arm. It is to be energized.

The cover plate 13 is attached to the center of the pivot shaft 10 at a substantially intermediate position between the lever 11 and the weight 12. The cover plate 13 is made of at least the aluminum material 5 to be treated.
Is formed to be wider than the mounting width of the insertion guide 6, and the length is such that the opening 14 between the insertion guides 6, 6 can be substantially closed. In this embodiment, the cover plate 13 is set to be substantially horizontal at the position where the opening 14 is closed.
It may be fixed so as to have an inclination with the zero side.

The transfer frame 7 from which the aluminum material 5 is suspended is supported by a transfer frame supporting arm 16 which is vertically moved by a lifting wire 15 of a lifting device provided on a crane (not shown). It is designed to travel.

In this aluminum material surface treatment apparatus, when the aluminum material 5 to be treated is put in the tank, the descending speed is greatly reduced just before the transfer frame 7 comes into contact with the lever 11. As can be seen from FIG. 2, the lower end portion of the transport frame 7 which has descended between the first and the sixth frames 6 abuts slowly on the lever 11, and the lever 11 is pushed down against the upwardly biasing force of the weight 12. Rotate downward. Then, the cover plate 13 which has been in contact with the insertion guide 6 with the rotation of the rotation support shaft 10 also has the opening 1 between the insertion guides 6 and 6.
4 is closed to the side to be closed, and the transport frame 7 is
At this point, when the lid 13 stops on the cradle 8, the cover plate 13 sufficiently covers the transfer frame 7, and the state shown in FIG. 3 is obtained.

In the closed state of the cover plate 13, even if another aluminum material to be processed passes over the treatment liquid tank 1 while dropping or flowing down the adhesion treatment liquid, the droplet or liquid flow is not When the cover plate 13 is inclined, it flows toward the insertion guide 6 according to the inclination and flows down into the processing liquid tank 1 along the surface of the insertion guide 6, so that the transport frame 7 No wetting by the processing solution and therefore no corrosion by the processing solution.

In the state shown in FIG. 3, after a lapse of a predetermined processing time, the aluminum material 5 to be processed is lifted up by the crane for each transport frame 7. As the transport frame 7 rises, the lever 11 pivots upward due to the rotational biasing force of the weight 12, and the cover plate 13 pivots upward, that is, in the opening direction, to move the transport frame 7.
Open the ascending road. Further, when the lever 11 is disengaged from the transfer frame 7 and the cover plate 13 is rotated until it comes into contact with the insertion guide 6, the operation of the guide mechanism is stopped, and the state shown in FIG. 2 is obtained. Even when the transport frame 7 is raised, the transport frame 7 is raised at a high deceleration speed at least until the lever 11 and the transport frame 7 are disengaged from each other, as in the case of the lowering. The detachment is performed slowly and smoothly.

[0017]

As is apparent from the above description, the present invention employs a liquid tank cover mechanism which engages with the lifting and lowering of the transfer frame for suspending the metal material to be processed and mechanically opens and closes. With simple equipment that does not require power and does not require an operation mechanism such as a complicated signal circuit using sensors, etc., and a liquid tank cover mechanism that can reliably open and close can be obtained, economically and steadily. Corrosion of the transfer frame can be prevented.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a metal surface treatment liquid tank provided with a liquid tank cover mechanism of the present invention.

FIG. 2 shows a state in which a metal material to be processed is raised or lowered.
It is a principal part expanded side sectional view of the metal surface treatment liquid tank of FIG.

FIG. 3 is an enlarged side cross-sectional view of a main part corresponding to FIG. 2 when the metal material to be processed stops descending.

FIG. 4 is a side cross-sectional view of a conventional metal surface treatment liquid tank showing a state of transport of a metal material to be treated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing liquid tank 5 Aluminum material to be processed 6 Insertion guide 7 Transport frame 8 Receiving stand 9 Cover mechanism 10 Rotating support shaft 11 Lever 12 Weight 13 Cover plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal surface treatment apparatus in which a transfer frame that suspends a metal material to be processed is conveyed while being held by a crane so as to be able to move up and down, and the metal material to be processed is immersed in a plurality of processing liquid tanks. A rotation support shaft rotatably supported on the upper portion of the processing liquid tank, and fixed to an end of the rotation support shaft, abuttingly engaging with the ascending and descending transfer frame, and rotating in the vertical direction. A lever, a lid plate fixed to a central portion of the rotation support shaft, rotated together with the lever, and opened and closed on the transport frame, and a lid plate fixed to an end of the rotation support shaft, A liquid tank cover mechanism in the metal surface treatment apparatus, comprising: a weight for urging the cover plate to rotate in the opening direction of the cover plate.