JP2559100B2 - Method and apparatus for entering vertically suspended hollow members - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank entry method and apparatus for entering a treatment tank in a vertically suspended surface treatment process for a long aluminum sash hollow material.

[0002]

2. Description of the Related Art In a vertically suspended surface treatment process for a long aluminum sash profile, when pre-treatment is followed by anodic oxidation and subsequent entry into a treatment tank for the purpose of producing an electrolytically colored film, FIG. The vertically suspended profile is placed in the treatment tank as shown in the schematic side view of FIG.

That is, a carrier basket 2 holding a plurality of aluminum sash profiles 1 in a vertically suspended state by a profile gripping part 3 attached to a carrier bar 2 is conveyed to a processing tank by a crane basket 4 which moves up and down, The carrier bar cradle 5 provided on the tank wall 7 while lowering the crane basket 4 and immersing the profile 1 under the liquid surface 6
Fix it on.

[0004]

FIG. 4 is a perspective view of a hollow frame member which is gripped by the gripping portion of the carrier bar and immersed in the processing liquid. In the case of using a viscous treatment liquid such as an electrodeposition liquid for forming an electrolytically colored film, the liquid surface 6 inside the hollow rises and the liquid blows up, so that the liquid is injected into the profile holding part 3 of the carrier bar. Adheres to the surface and causes liquid dripping.

If it is attempted to eliminate the above-mentioned liquid blowing, the carrier bar descending speed is 40 mm /
It had to be extremely slow, like less than a second.

[0006] In the case of a program system in which a carrier bar in which a shape member is suspended is sequentially conveyed by several cranes and the processing process is advanced in a predetermined time, if the descending speed is slowed, the crane moves to the next process. However, there was a problem that the productivity was deteriorated due to the delay of the processing time, the failure to keep the predetermined processing time, and the slow descending speed of the transport crane.

Therefore, an object of the present invention is to provide an aluminum sash-hollow shape material entry method and entry tank into a treatment tank capable of smoothly performing a treatment process program without extremely slowing down the carrier bar. To provide a device.

[0008]

As a result of research to achieve the above-mentioned object, the inventors of the present invention have fixedly provided a slow-down device such as a hydraulic shock absorber on the outside of the tank wall, and provided a hollow hollow device. The carrier bar having a gripping part for suspending the profile is transferred onto the processing tank, and first, the carrier bar is gently lowered by a crane basket, for example, at a speed of about 180 mm / sec. After the carrier rod is received by the piston rod of the device, 40 mm / sec or less, for example 10 to 10
The inventors have found that the above problems can be solved by further lowering the carrier bar at a descending speed of about 30 mm / sec and fixing the carrier bar on a carrier bar pedestal provided on the tank wall, and arrived at the present invention.

Therefore, according to the present invention, firstly, in order to perform a surface treatment on a hollow aluminum sash hollow frame member, a plurality of hollow frame members are vertically held while gripping a plurality of hollow frame members by a frame member holding portion attached to a carrier bar. The vertically suspended hollow-shaped material tank, which is transported in a suspended state and then immersed in the processing liquid by lowering the carrier bar with a lifting crane basket, is fixed to the crane basket and the tank wall outside the processing tank. The slow descending mechanism is provided at two different descending speeds, and the slow descending mechanism is equipped with a piston that moves up and down in a predetermined short distance section. 180mm / sec with the carrier bar in the crane basket
The carrier bar is fixed at the carrier bar pedestal provided on the tank wall from the time when the top of the pushed-up piston of the slow descending mechanism receives the carrier bar at a relatively high first lowering speed To a vertical hanging hollow member at a second descending speed of 40 mm / sec or less ; and secondly, in a surface treatment step of the hollow aluminum sash hollow member, a carrier is used. A plurality of the shaped materials, which are carried on the processing tank while being held in a vertically suspended state by the shaped material holding part attached to the bar, are immersed in the processing liquid by lowering the carrier bar with a basket of an elevating crane. A device for vertically advancing hollow-holed material is provided on the side of the tank wall outside the processing tank with a slow descending mechanism for the carrier bar. Comprising a tons oil circulation and the hydraulic adjustment system, and a piston crown of the state of being pushed down with the carrier bar receiving table provided on the tank wall is fixed to substantially the same level, the piston hydraulic receiving the carrier bar has been lowered by <br/> pushed up state by a predetermined distance to be fixed it to a carrier bar receiving table
Release is lowered below the predetermined speed 40 mm / sec, after transformant material immersion, the carrier bars with increasing carrier bar
Return to the receiving position and adjust the piston descending speed.
And the oil pressure adjusting system and the oil for lifting and lowering the piston.
The present invention provides a tank device for a vertically suspended hollow section, which is characterized by the presence of a circulation system .

[0010]

With respect to the shock absorbing and slow descending mechanism, a hydraulic shock absorber or the like which has been conventionally used as a shock absorber is useful, and the mutual relation of the size, capacity, installation location, etc. of the shock absorbing mechanism is effective. Commercially available products can be used as they are if they are designed appropriately.

FIG. 5 is a side sectional view showing a hydraulic shock absorber used in the present invention. That is, when the carrier bar 2 descends and collides with the piston rod 10 of the slow descending mechanism (shock absorber) 8, its power is converted into oil 12 on the back surface of the piston head 11 as pressure, and this pressure energy is transferred to the inner tube. It ejects from a plurality of orifices 13 provided and becomes thermal energy and is dissipated to the atmosphere. Thus, the energy at the time of collision is consumed while the piston 9 moves to the stroke end, and this operation smoothly stops the carrier bar. be able to.

Next, as the carrier bar 2 is pulled up, the piston rod 10 is pushed up by an oil circulation system provided separately to restore the state before the collision, and is ready to wait for the next descending time of the carrier bar.

[0013]

1 and 2 are schematic side views of a tank entry device for entering a hollow material in this example. The former is a state in which a carrier bar is on a slow descending mechanism, and the latter is The state where the carrier bar is further lowered and fixed on the carrier bar pedestal provided on the tank wall is shown, and will be described below with reference to these.

A carrier bar 2 having a profile gripping part 3 for suspending a long aluminum hollow profile 1 is conveyed to a processing tank by a crane basket 4 which moves up and down. First, the descending speed of the carrier bar by the crane basket is 180 mm. / Sec,
A slow-down mechanism (shock) provided outside the tank wall 7 of the processing tank.
The absorber was dipped to the liquid level 6 by reducing the descending speed of the rod, that is, the carrier bar from the time of reaching the piston rod 10 of No. 8 to the fixing to the carrier bar cradle 5, to 25 mm / sec.

According to the present embodiment, the conventional liquid sagging defect is remarkably reduced, the productivity is improved by 4.3% due to the cycle increase of the carrier crane truck, and the paint is attached to the conventional carrier bar grip portion. Therefore, it became unnecessary to perform the peeling work regularly.

Table 1 shows the results after the installation of the slow descending mechanism. For comparison, the data before the installation of the slow descent mechanism is also shown.

[0017]

[Table 1]

[0018]

As described above, according to the method of the present invention, when the vertically suspended aluminum sash hollow section is put in the tank, the carrier bar is lowered in a two-step system, and the final step of the tank is delayed. Since it descends at a prescribed speed of 30 mm / sec or less by the descending device, liquid sagging defects are significantly reduced, productivity is improved due to cycle up of the crane carrier truck, and in addition, it adheres to the carrier bar gripping part. Workability has been remarkably improved by eliminating the need to remove the paint.

[Brief description of drawings]

FIG. 1 is a schematic side view of an aluminum sash-hollow profile tank in which a carrier bar is mounted on a slow descending mechanism in one embodiment of the present invention.

FIG. 2 is a schematic side view showing a state in which a carrier bar is fixed on a carrier bar pedestal in FIG.

FIG. 3 is a schematic side view of a conventional aluminum sash hollow section bath device.

FIG. 4 is a perspective view of a hollow frame member gripped by a carrier bar gripping portion and immersed in a processing liquid.

FIG. 5 is a side sectional view of a slow descending mechanism (shock absorber) used in an embodiment of the present invention.

[Explanation of symbols]

 1 Hollow Shaped Material 2 Carrier Bar 3 Shaped Material Holding Part 4 Crane Basket 5 Carrier Bar Support 6 Liquid Level 7 Tank Wall 8 Slow Down Mechanism 9 Piston 10 Piston Rod 11 Piston Head 12 Oil 13 Orifice

Claims (2)

(57) [Claims] 1. In order to perform a surface treatment on a hollow aluminum sash hollow shape member, a plurality of hollow shape members are held vertically by a shape member holding portion attached to a carrier bar while being vertically suspended on a processing tank. In the method of entering a vertically suspended hollow shape member in which the carrier bar is lowered by a crane basket that is transported and lifted up and down, and is immersed in the processing liquid, a slow descending mechanism fixedly provided on the crane basket and the tank wall outside the processing tank. The slow-down mechanism is equipped with a piston that moves up and down in a predetermined short-distance section. First, the carrier bar transferred onto the processing tank is moved by a crane basket. , 180 mm / sec at a relatively fast first lowering speed, and then provided on the tank wall from the time when the top of the pushed piston of the slow descending mechanism receives the carrier bar. A method for entering a vertically suspended hollow shape member, characterized by lowering at a second lowering speed of 40 mm / sec or less until the carrier bar is fixed on the carrier bar holder. 2. In a surface treatment step of a hollow aluminum sash hollow shape member, a plurality of shape members conveyed onto a processing tank while being held vertically by a shape member holding portion attached to a carrier bar are used. A device for entering a vertically suspended hollow shape member for lowering the carrier bar by an elevating crane basket and immersing it in the processing liquid, wherein a slow descending mechanism for the carrier bar is provided on the side wall of the tank wall outside the processing tank. The slow-down mechanism is provided with a piston that moves up and down a predetermined distance by hydraulic pressure, an oil circulation and hydraulic pressure adjusting system, and a carrier bar pedestal provided on the tank wall and a piston top in a depressed state. state but is fixed to be substantially the same level, the piston is pushed up by the hydraulic
The carrier bar that has descended at is received, and the predetermined distance until the carrier bar is fixed on the carrier bar cradle is 40
The carrier bar is received as the carrier bar rises after being lowered at a predetermined speed of less than mm / sec and immersed in the profile.
Return to the position , adjust the piston descending speed and fix the piston.
The hydraulic pressure adjustment system and the oil circulation system for lifting and lowering the engine.
A vertical hanging hollow tank entry device characterized by the presence of a system.