JP2971654B2 - Set rod washing tank with rocking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning set rods for reinforcing cages for concrete products, for example, lightweight aerated concrete products (ALC) cured by autoclave.

[0002]

2. Description of the Related Art In an ALC manufacturing process, as shown in FIG. 19, a set rod 4 is used together with a set frame 3 to support a large number of reinforcing cages at predetermined positions in a molding form. When the poured mortar in the frame is foamed and becomes semi-plastic, the engagement between the reinforcing cage and the set rod tip is released, and the set frame is fixed to the set frame with the set rod attached. Extracted from Since the mortar is extracted in the semi-plastic state, the mortar adheres to the collected set rod. In order to recycle the extracted set rod, it is necessary to remove mortar adhering to the set rod. The mechanical scraping of the mortar adhered to the set rod has already been proposed by the present applicant and has been disclosed as Japanese Patent Application Laid-Open No. 3-272806. However, the reinforcing cage supported by the set frame and set rod,
Before being brought into the mold of FIG. 19, the rust preventive treatment is performed by dipping in the rust inhibitor while being supported by the set frame and the set rod. Is attached. If the set rod is circulated and used with the rust preventive agent attached in this way, the rust preventive agent will adhere to it and increase the rust preventive layer at the next use. Must be removed by washing with a solvent. The set rod thus collected needs to be washed, and the conventional set rod cleaning is generally performed by removing the set rod from the set frame, placing only the set rod in a basket, and washing with a solvent. there were.

[0003]

As described above, in the prior art, the set rod was separated from the set frame to clean the set rod. As described above, the method of separating the set rods and collecting and washing only the set rods is a method of simultaneously setting the reinforcing cages when inserting the washed set rods into the set frame one by one. However, such a process was a significant system. However, when trying to hang the reinforcing rods on the set rods inserted into the set frame using an automatic device with a large number of set rods as previously proposed by the applicant inserted into the set frame, In the method of separating the set rod and collecting and cleaning only the set rod, a step of separating the set rod from the set frame and a step of assembling the set rod and the set frame are required, requiring manual work,
In addition, complicated dedicated machines for automating these operations are required in each process. SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus capable of effectively cleaning the set rods without separating the set rods from the set frame and in a state where the set rods are engaged with each other, thereby reducing the number of manual operations.

[0004]

SUMMARY OF THE INVENTION The present invention provides the following cleaning tank to achieve the above object. That is, the set frame with the set rod engaged is placed on the pallet, and a set rod swinging station is provided in a cleaning tank for cleaning the set rod with a cleaning liquid by advancing the pallet by the transfer device. A lifting device for lifting a pallet from which a pallet carrying a set frame is mounted, and a rocking device for rocking the lifting device forward and backward are provided. By using such a swinging device in a washing tank having a slit as shown in the embodiment, the washing effect of the set rod is improved.

[0005]

The set rod advanced by the pallet advances through the slit in the cleaning tank and is cleaned. However, when mounting a set frame with set rods on a pallet,
A number of set frames with set rods are placed side by side so that the widthwise side surface of the cleaning device and the longitudinal direction of the set frames are parallel. When the set frame is placed on the pallet in this way, the plurality of set rods suspended on the same set frame pass through the same slit of the washing tank, and the reinforcing bars in the form are mutually connected. Because the intervals etc. change,
The set rods can be cleaned in the same cleaning tank even if the set rods inserted into the set rods are different in the mutual interval. The present invention further provides a set rod swinging station in the washing tank as described above, stops the pallet advancing in the transfer device by hitting the stopper at the station, and then lifts the pallet from the transfer device and sets it. The rod is swung to clean it. Generally, the coating film fixed to the set rod is first swelled by immersion in a cleaning solvent, and gradually starts to elute from the surface. The dissolution rate of the paint component into the cleaning solvent is determined by the difference in the concentration of the paint component in the cleaning liquid. Therefore, before the coating film swells and the elution starts, the effect of shaking is small, and the elution starts, and when the concentration difference of the cleaning liquid paint component around the set rod occurs, the set rod is swung, and the set rod is swung. Giving the relative velocity difference of the cleaning liquid and renewing the high concentration region of the elution component in the solvent formed around the set rod promotes the cleaning action of the coating film. Therefore, the set rod swinging station is provided in the latter half of the cleaning tank.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. The reinforcing bar cage (M) of the ALC panel shown in FIG. 19 has two reinforcing mats (m) formed by welding a main bar parallel to the bottom surface of the formwork (K) and a secondary bar in the depth direction of the formwork in the drawing. ) Are opposed to each other, and these are connected by a spacer (1) arranged vertically. As shown in FIG. 19, the reinforcing bar (M) is hung by the set rod (4) of the set frame (3). Inserts the set rod (4) of the set frame (3) into the hole (2) of the spacer (1) of the reinforcing cage (M) and rotates the set rod (4) to lower the lower end of the set rod (4). Is engaged with the lower spacer, and the reinforcing rod cage (M) is suspended by the set rod (4) inserted into the set frame (3), and a large number of reinforcing rod cages (M) are blocked. Assemble into a shape. In a state where the reinforcing bar cage thus blocked can be hung by the set frame (3), the reinforcing bar cage is immersed in a tank of a solvent-type rust preventive agent and dried in order to perform rust prevention treatment. During this rust prevention treatment,
The rust inhibitor also adheres to the set rod (4). The block-shaped reinforcing cage having been subjected to the rust-prevention treatment is suspended by the set frame (4), and inserted into the forming mold (K) as shown in FIG. After the is hardened to a certain extent, the set rod (4) is rotated to disengage the reinforcing rod (M) from the engagement with the lower end spacer of the set rod (4), and set using the hanging bracket (5) of the set frame. The rod (4) is lifted together with the set frame (3), and the set rod (4) is removed from the mold (K). Since the mortar has adhered to the set rod (4) of the set frame (3) extracted from the mold (K), the mortar is scraped off with the set rod-attached mortar scraping device disclosed in Japanese Patent Application Laid-Open No. 2-272806. Scrape off.

[0007] The set rod that has gone through the above-described removal step is transferred to the set rod cleaning step of the present invention. FIG. 5 shows a cleaning tank (6), in which several slits (7) filled with a cleaning liquid, for example, ten slits are provided in the longitudinal direction. The set rod (4) can advance as described above. The cleaning liquid is supplied from the circulation pump to the liquid inlet header (8) as shown in FIG. 14 and supplied to each slit via an adjustment valve (8a) arranged so as to be evenly distributed to each slit (7). . The flow rate is
It is desirable to secure a flow rate such that a flow rate of about 0.2 to 0.1 m / s is secured in the slit (7). This is necessary to increase the cleaning effect of the set rod. The cleaning liquid flows in the direction of the arrow in FIG. 14, that is, in the direction opposite to the direction in which the set rod advances, passes through the liquid level adjusting knob (38), passes through the overflow gutter (39), and passes through the liquid outlet (27). Return to the circulation pump. Since the cleaning liquid contains sludge components such as adhered mortar components, the bottom surface of the cleaning liquid outlet is inclined, and a sludge discharge port (40) is provided at the lower end thereof so that drainage can be intermittently performed. . The liquid level of the cleaning tank is determined in consideration of the height of the coating film attached to the set rod, but is set by a liquid level adjusting key so as to be lower than a pallet for transporting a set frame described later. A chain with a top roller in which the top roller (10a) is a free roller as shown in FIG.
And a driven wheel (30) driven by a motor (28). The free roller chains (10) on both sides advance and stop by one pitch, and one pallet is mounted on the free roller chain (10) at one pitch. (11) shown in FIGS. 10, 11, and 12
Is a pallet, and a V-shaped groove (12a) (12a)
There is a cross beam (12) having a), on which the legs (3a) of the set frame (3) ride. The vertical beams (13) on both sides of the pallet have a hook-shaped cross section when viewed from the front, and a support leg (14) at the center of the hook-shaped cross section is mounted on the free roller chain (10) as shown in FIG. . The vertical beam (13) of the pallet also has a hanging device (1
5) is protruding.

As described above, since the pallet (11) is constructed, a set frame with a set rod is carried in by a carry-in machine (not shown), and the inlet (6a) of the washing tank (6) shown in FIG. On the pallet (11). On this occasion,
The set frame is placed on the pallet (11) such that the longitudinal direction of the set frame is in the same direction as the traveling direction of the pallet (11), that is, the set frame is arranged along one slit of the washing tank. For example, when ten set frames are arranged on one pallet, a free roller chain (1
0) proceeds. 5a to 5h show one section in which the pallet (11) advances by one pitch. When the pallet (11) passes through each section and reaches the h position, a stopper (not shown) becomes a horizontal position, and the movement of the set frame is stopped. Stop it. At that time, since the chain (10) has a free roller, the pallet (11) remains at the position stopped by the stopper. At the outlet position (6b) of the stopped washing tank, a set frame carry-in machine (not shown) advances to the outlet, grasps the hanging member (5) of the set frame on the pallet (11), and carries it to the dryer. Next, the hanger (15) of the empty pallet (11) at the washing tank outlet (6b) is gripped by the carry-in machine and transported to the washing tank inlet (6a). Cleaning tank entrance (6a)
Then, a set frame with an unwashed set rod is carried in by a carry-in machine and placed on an empty pallet (11). Empty pallets (1
When the set frame is loaded in 1), the chain (10) is driven, and the set rod of the set frame is washed in the washing tank.
Move intermittently. Cleaning is performed by repeating the above operation.

In order to effectively perform the above-described cleaning, for example, a brush or a cleaning nozzle is arranged at a position of a section (f in FIG. 5) in front of an outlet of a work, and left and right with respect to an advancing set rod. , The cleaning effect can be enhanced.
Further, the brush may be disposed in a slit portion at a tip end portion of the set rod where dirt is relatively hard to remove. Further, in order to effectively remove the dirt at the tip of the set rod, a cleaning liquid jet nozzle (41) is connected to the pipe (4) as shown in FIG.
There is also a method in which the cleaning rod is disposed in 2) to form a local flow of the cleaning liquid by a jet at the tip of the set rod (4). Note that FIG.
Numerals 17 and 18 cover the upper surface of the cleaning tank (6) with a cover (24).
5) (25) and air curtain suction ports (26) (26). There is no cover for one pallet before and after the cover (24).

[0010] The present invention provides a cleaning tank as described above,
The sections e and f in FIG. 5 are swing stations. As described above, the swing station is used for the following reason. That is, when the coating film fixed to the set rod is immersed in the cleaning solvent, first, the coating film swells and gradually elutes from the surface. The elution of the paint components into the cleaning solvent is adjusted at the rate by the concentration difference. Therefore, before the coating film swells and elutes, the effect of shaking is small, and the elution starts, and when the concentration difference of the cleaning liquid paint component around the set rod occurs, the set rod is swung, and the set rod is swung. Giving the relative velocity difference of the cleaning liquid and renewing the high concentration region of the elution component in the solvent formed around the set rod promotes the cleaning action of the coating film. From the above viewpoints, it is effective to dispose the rocking device in a station at the latter stage of the cleaning tank. The e and f stations have a stopper (17) for stopping the advancing pallet (11). The stopper (17) shown in FIG. 3 is operated by a cylinder (16), and takes upright and horizontal positions around a fulcrum (18). The stopper (17) moves the horizontal position. By taking it, the pallet (11) on which the set frame (jig) with which the set rod is engaged
Stops. At that time, since the chain (10) has a free roller, the pallet (11) remains at the position stopped by the stopper (17). In the stations e and f, there is a swing frame (33) that moves back and forth along a guide (32) on a base stream (31) as shown in FIG. 1, and the guide (33) is located above the swing frame (33). There is a lifting frame (21) that moves up and down along 34). The lifting stopper (23) on the lifting frame (21) shown in FIG.
The hole (22) of the lifting plate (20) provided on the vertical beam (13) is fitted. The lifting plate (20) is raised by the engagement of the lifting stopper (23) of the frame (21), which is raised by the cylinder (35) in FIG. 1, with the hole (22). E-station swing frame (33) and f
The swing frame (33) of the station is connected in advance with a joint (36) as shown in FIG. 1, and is moved back and forth by a cylinder (37). The lifting mechanism as described above is the cleaning tank (6)
This lifting mechanism raises the pallet (11) while holding the jig.

By moving the swing frame (33) back and forth with the cylinder (37) in the raised state, the pallet (11) moves away from the chains (10) and (10) and moves back and forth. The set rod (4) of the jig placed on the top moves back and forth in the slit (7). Therefore, since the set rod (4) moves back and forth in the cleaning liquid in the slit (7), the cleaning is rapidly performed. Therefore, the cleaning effect of the cleaning device integrated with the set rod and the set frame can be further enhanced in a state where the set amount of the cleaning solvent is small as shown in the figure. In order to remove the coating film adhered to the set rod in a short residence time, it is effective to swing the set rod in the cleaning tank. Although the embodiment has been described in which the cleaning tank is provided with a slit, the present invention is not limited to such a cleaning tank.

[0012]

According to the present invention, the set frame engaged with the set rod is placed on the pallet, and the set rod advances in the cleaning liquid by the advance of the pallet by the transfer device. No manual work to separate the set rod from the set frame is required, so no special machine is required for separating the set rod from the set frame and assembling the set rod and the set frame, and a large number of set rods can be continuously washed. There is a feature. Since the set rod can be washed through the pallet by the back-and-forth swinging device, the coating film adhered to the set rod can be removed with a short residence time. In addition, since the pallet can be separated from the transfer device by the lifting device, the transfer device and the pallet do not interfere with each other during the moving washing.

[Brief description of the drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a partial view showing a relative relationship between a pallet and a lifting device of the apparatus of the present invention.

FIG. 5 is a plan view of the cleaning device.

FIG. 6 is a front view of the same.

FIG. 7 is a left side view of the same.

FIG. 8 is a partial view showing a relationship between a pallet and a chain with a free roller.

FIG. 9 is an explanatory diagram of a free roller chain.

FIG. 10 is a front view of a partial cross section of the pallet.

FIG. 11 is a side view of a partial cross section of the above.

FIG. 12 is a plan view of the same.

FIG. 13 is a diagram showing a relative relationship between a cleaning tank and a pallet.

FIG. 14 is an explanatory diagram showing a flow of a cleaning liquid.

FIG. 15 is an explanatory diagram of an embodiment that improves the cleaning effect.

FIG. 16 is a plan view of a cleaning tank with a cover.

FIG. 17 is a front view of the same.

FIG. 18 is a left side view of the above.

FIG. 19 is a perspective view showing a relative relationship between a mold, a set bar, and a set frame.

[Explanation of symbols]

 3 Set frame 4 Set rod 10 Chain with free roller 11 Pallet 17 Shutter 20 Lifting plate 23 Lifting stopper 33 Swing frame 35 Lifting cylinder 37 Swing cylinder

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-69426 (JP, A) JP-A-3-272806 (JP, A) JP-A-5-177624 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) B28B 23/02

Claims (1)

(57) [Claims] 1. A set rod swinging station is provided in a cleaning tank for cleaning a set rod with a cleaning liquid by moving a set frame engaged with a set rod on a pallet and advancing the pallet by a transfer device. A set rod cleaning tank with a rocking device, comprising: a lifting device for lifting a pallet from a transfer device on which a set frame to which a rod engages is mounted, and a rocking device for rocking the lifting device back and forth.