JPS5855068A - Method and apparatus for painting of cement mortar formed product - Google Patents

Abstract

PURPOSE:To increase productivity by sending out a formed product from the end of a supply conveyor through a painting position, shifting to the end of the conveyor, and after painting performing cleaning of the painting gun and successive carrying of formed product during the time of cessation of painting. CONSTITUTION:A formed product 7 is sent to a specified position of a painting station 2 by the first conveyor 6. A painting device 12 is placed in the upper part of the painting position. A rotating shaft 15 penetrating the center of a paint tank 14 is rotated by a driving motor 13. Painting guns 18a for slurry connected to a pump direct their painting nozzles against a formed product 8. Separate tanks 14 are connected to each of two painting guns 18a. The front part of the painting guns 18a for slurry form paint supply chambers that have paint nozzles at the tips.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for coating cement mortar molded articles.

The coating coverage was not sufficient for conventional cement mortar press molded products. Such coating became possible with the development of molding presses and coating agents. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a method and apparatus for coating cement mortar molded products, which can extend the usage time and increase productivity by applying a coating agent to molded products immediately after molding and before curing.

In order to achieve the above purpose, the present invention firstly sends the molded product through the coating position of the supply conveyor, moves the conveyor to the coating position, applies at least one type of coating during the coating time, and uses the coating gun during the coating down time. It is an object of the present invention to provide a method for painting a cement mortar molded product, which is characterized by cleaning the molded product and transporting the molded product in stages.

At least one molded product pedestal located between the supply conveyor and the delivery conveyor, at least one corresponding aIO paint gun located above the pedestal, and a cleaning device. , a plurality of conveyor arms that move between the places where both conveyors and the pedestal OII touch, a progressive conveyor mechanism that supports and drives the conveyor arm, and a plurality of OIs and a scissor conveyor mechanism that moves along a horizontal guide shaft. It is an object of the present invention to provide a cement mortar molded product coating device characterized by including a direct guide shaft.

ζ and Yoshi, who provide the method and apparatus as described above, are able to clean the coating gun frequently during the transportation process including the coating process, which is required by the low-moisture coating agent due to the characteristics of the molded product. By implementing this method, the continuous operation time of the coating equipment can be significantly extended.

Hereinafter, referring to the accompanying drawings showing one embodiment of the present invention, wII! of the present invention! # Describe the image in detail.

Figure 1 and Figure 1! This figure shows the automatic cement mortar molded product manufacturing equipment 1 and its KII integrated painting station. An automatic cement mortar molded product is molded, and molded product manufacturing equipment such as Patent No. 1114943 (Special Committee 1986-1)
0!011) K You can use the indicated turtle. This is a steam/water separator connected to the vacuum suction type water squeezing device patented by Company 7 above. Molded product 1 transferred from the molding machine to the first conveyor
The painting stage was completed by the 1st: 1 MPEYA 6! is sent to a predetermined location. This position Ka miko-shaped transfer arm ■
is sent to the first stop position, then the first! It is sent to a parking position and finally placed on the end of the first conveyor 60. When there are two coating positions as in the embodiment, four positions arranged in a line in the direction orthogonal to the conveyance of the conveyor are sequentially conveyed, and three conveyor arms are integrally fixed to the conveyor mechanism 11 and extend at right angles. The molded product is transferred from the first conveyor 6 to the second conveyor 10t by a rectangular movement 9 times 3 times.
transported by As shown in FIG. 1, there is a coating device 1 above the loading position! is arranged, and a drive motor 1s rotates a rotating shaft 1s vertically mounted on a vertical bearing in the center of paint tank No. 1, and the lower end of this rotating shaft 1B is connected to a pump 1.
It has become a rotor.

Further, a stirring blade 17 is provided at the bottom of this rotating shaft 11,
A heat conduction medium circulation muffler 1 is provided around the tank to maintain the uniformity of the coating agent and transfer heat, and to maintain the temperature of the coating agent at a constant level, circulating hot water in winter and cooling water in summer.

A slurry coating gun II'S connected to a pump directs its coating injection port toward the molded product. For one molded product 6! It is best to place the slurry painting guns 101 of -& in parallel for painting.
0b is the paint rate for the top tool,! 0 is a top coat paint supply tank. The details of its structure and handling will be described with a focus on the painting cage 1.1 for Sissurari, based on a 1m3 diagram. A cylindrical tank 14 for storing slurry as a coating agent is shown, and this tank 14 is a machine frame! IK
A rotating shaft 16 passes vertically through the center, and is rotatably supported above and below the tank. A continuously variable transmission mounted on the machine frame t1 above the tank 14 at the upper end of the wrinkled rotation shaft 1s is preferably connected to the drive bias of the rotating shaft 1s.

Further, the lower end of the tank 14 ends in the pump 1. Although it is possible to use a kneaded helical diaphragm λ pump as the pump 16, it is also possible to use a monopump in which the shaft 22 of the single-threaded screw is installed on the stator No. 3 and rotates eccentrically inside the sleeve of the double-threaded screw. It's hard to use. tank 1
The rotating shaft 1s passing through 4 is the threaded shaft of Mono pump 1! Attaching the stirring blade 1) to the bottom of the 0-rotation shaft II connected to the snow allows for maintenance of thin coating uniformity and good heat transfer.

Since the concentration and viscosity of the paint to be used are not affected at once, the outer periphery of the 1-fathom tank is surrounded by a muffler 11, and a thermally conductive medium (i.e., water) inlet 23 is installed at the bottom, and at the top. Exit! The temperature of the paint is kept constant by circulating hot water in the winter and cooling water in the summer.

The output azi of the lower end of the pump 16 is the slurry coating gun 1s.
is connected to. The slurry painting gun 181 has a front part (
The paint agent supply chamber 26 (on the right side of the drawing) has a paint agent injection port 27 at the tip, a paint agent inlet at the other end, and an outlet of the pump 16 via a flexible connecting pipe. ! It communicates with the vessel. A cylindrical sliding tube 28 passes through the axis of the slurry coating gun 18 and extends inside the coating agent supply chamber 26 at the front of the gun, with its front end connected to the coating agent injection port 2.
7. The sliding pipe 2s is a supply pipe for injection gas, that is, air, and its tip is formed into a tapered shape, and the inner wall of the paint injection port 21 of the gun casing is tapered inside, and the sliding pipe 28 is moved. When it is connected to the injection port 27, the paint supply chamber becomes a paint injection port! 7 yo υ is blocked.

The rear end of the sliding tube 2I passes through the rear part of the gun casing and projects beyond the rear end of the gun. And this sliding pipe! - Injection gas on-off valve suitable for rear end 1 port 1 position normally closed solenoid valve! Air source 1 (IK*
It is continued. A cylinder chamber 31 for operating the sliding pipe 28 is formed at the rear of the gun, and in the cylinder chamber 31! MiIh
An actuating piston 12 that is fitted and fixed around the tube 28 slides. Between the wall of the cylinder s1 and the piston 32 is an O-ring 3
Sealed by 3. A through hole 8 for guiding the sliding pipe 28 is provided in the wall separating the cylinder chamber 81 and the paint supply chamber 26.
4, the compartment is sealed by O-ring 3Is. Working gas is introduced into the inner end of the cylinder chamber $1.
and is connected to a source of operating air via a switching valve s1, preferably a two-point, two-position normally operated solenoid valve. Cylinder! The outer end of 1s1, that is, the rear end of the gun casing, has a return spring 38 between the end wall and the piston 8th.
to be placed.

Provide a threaded opening 4o coaxial with the end wall Kti sliding pipe.
Scissors opening number r! (- History - Suekura - Opening 3 through which the moving pipe 28 penetrates
・Thread the adjusting screw number 1 with the piston l! The terminal position of the sliding tube 3, that is, the retracted position of the sliding tube 3 can be adjusted,
This allows the aS agent injection port! The amount of paint supplied to IKsP can be adjusted. Sliding pipe! Although the opening of the adjustment screw 41 may be in sliding contact, a gap may be provided between the opening and the opening of the adjustment screw 41.

4 air escape openings in JLL Kion! Requires. An annular muffler 48 is attached around the front end of the AT gun 1, and the inner wall of the tip of the annular muff 2-3 surrounds the injection port 21, and an annular injection gas chamber 44 is provided inside the muff 9.
-48 tip C through 11 diameter! There are four openings facing diagonally forward and inward according to the injection gas chamber number. An inlet 47 is provided which connects the air source 30 to the muffler 43 and communicates with the injection gas chamber 44 via a 1-position normally closed solenoid valve 41. The air supplied to this muffler 43 forms an intersecting air flow forward (through two diametrically opposed openings 4) to form a paint spray pattern.

A cleaning gun that injects a cleaning agent toward the tip of the paint gun 11& is indicated by 40. The cleaning device shown in the drawing, that is, the cleaning gun 4-, has a cleaning agent supply path 4.1 on its axis. For example, four or one injection gas supply passages IO are arranged at equal intervals around the circumference 11 and parallel to the supply passage 4, and communicated with the cleaning agent supply passage IO near the gas/tip opening 081. , Cleaning agent supply passage number - inlet opening S at the other end! and a normally closed solenoid valve 84.
Cleaning agents via Is/I@ and air source 3 respectively
Connect it to 0. The cleaning agent tank 56 contains alcohol,
Store cleaning agents such as water and thinner.

The operation of the coating apparatus having the above structure will be described below.

When the coating device is driven, the motor 12 rotates and the solenoid valve 29.3? . The injection is stopped by stopping the motor and closing the opening of the paint supply chamber 27.

Since the motor 12 is of a continuously variable speed type, it is possible to adjust the supply amount of the coating agent and the spray amount of the coating gun.

The injection of the pattern forming gas and the injection of the coating agent injection gas are continued even after the injection of the coating agent is stopped, and the coating agent is peeled off from the tip of the coating gas, especially around the injection hole 17. The coating gun coats the molded product at the coating position, and after this round of coating is completed and the operation of the coating gun is stopped, the coating gun remains at that position or is rotated to the cleaning position. When the cleaning device is activated, the cleaning agent supply solenoid valve 63 is activated, and the cleaning agent collides with the front end of the coating gun in the cleaning position, causing the paint to scatter. If the injection gas supply solenoid valve S6 is activated at the same time as the cleaning agent is supplied, the injection force of the cleaning agent will be increased, which will slow down the operation.
It is possible to spray using only the internal pressure of the cleaning agent tank, and if the spraying of the cleaning agent over a wide area becomes an obstacle, the injection gas will not be used to transport the cleaning agent, and after the supply of cleaning agent is stopped, the solenoid valve 6 will be activated. Injection gas is also supplied to the paint gun to wipe away the cleaning agent, and the cleaning agent present at the top of the painting gun is scattered and dried. Of course, when starting the supply of the cleaning agent and the injection gas at the same time, it is sufficient to stop the supply of the cleaning agent and then continue supplying only the injection gas.

After stopping, the painting gun moves from the cleaning position to the painting position, completing one cycle of the painting gun.

4th & figure, jlE4b figure, 8a figure, 5th baa, 6th figure
In Figures (a) to <1>, the structure and operation of the progressive conveyance mechanism 11 in the coating stage box 2 of the present invention are shown.

Three conveyance arms 9 protrude from the progressive conveyance mechanism 11 (described later), and the conveyance arms 9, which have the same structure and the same size between each other, are U-shaped and can receive the molded product 8. The first conveyor 6 corresponds to the delivery
, the second conveyor 10 and the first and second receivers at the painting position are on the stand! ? , INI is selected as a shape that can be moved vertically and horizontally. , the first pedestal s7 in the first painting position
and the second pedestal slI in the second painting position is the transfer arm 9
This figure shows a similarly shaped rectangular frame with a width that allows it to pass between both arms. The reason there are two painting positions is because the top coat is applied on top of the slurry on the molded product.
This method is suitable for various painting methods. The number of painting positions is not limited to two; when performing only slurry painting, the number of painting positions and molded product holders installed there may be set to one, and the number of transport arms 〇 may be set to two; , second
It is also possible to create three positions between the conveyors, which are three painting positions, or two painting positions and a parking position for further treatment.

Progressive transport mechanism (11 manufacturers, shown in Figures 51L and SB, two parallel cylindrical horizontal guide shafts)! l#
, 8G are fixed to the transport mechanism 110 machine frame (not shown),
A horizontal guide shaft that takes! lit.

60 each with 3 connected four-wheels, 1.・
! Through the cylindrical holes -8 and -4 provided in the cylindrical holes -8 and -4, eight pairs of upper and lower connecting blocks 1. -2 further has a vertical cylindrical hole, and the cylindrical holes KIN of the three vertical guide shafts 7) Il, which are also cylindrical, are fitted together and fixed, and the lower horizontal guide shaft also has an extension on the lower side. , and an arm mounting block (#) passes through this lower arc long portion so as to be able to slide vertically. One upper connecting beam - 1 is, for example, a υ-shaped connecting beam, an IK, and nine transport arms! ! are arranged at equal intervals by the connecting beams 61), and the upper and lower connecting beams 61 are...! A pair of combined lifting air cylinders [phase] are connected by piston rods, and the upper connecting beam 61 is also connected to a piston sliding inside the air cylinder 10 fixed to the machine frame. They are fixedly connected via a piston rod mounting plate 11.

41, 41>Il,
jlllmll, IIEI) lIl and No. @E (1~<
r> will be explained below. Figure 41 and Figure 41 (
The position shown in &) is the initial position of one conveyance cycle, and if it is assumed that several conveyance cycles have already been completed before that, then the first position at the end of the first conveyor and the first stop position The molded product holder 11 and the No. 1 on the No. 1 stopper device! Each molded product is placed on the molded product holder ■. 22 transport arms are waiting at the position shown in Figure 6 (tortoise).

What is the state of the lifting cylinder 69 at this position? The upper low-speed feed lifting cylinder is at the position where the piston rod protrudes the most into the cylinder.

The lower part of the lift cylinder is located at the position where the piston rod enters the furthest from the cylinder. When the upper cylinder is operated and contracted from this standby position, no change is observed in the fourth turtle figure, and from figure 1 (1) to figure 1 (b).
) t, and the transport arms ] and each support the molded product 1 together with the receiving iron plate. The upper lifting cylinder stops at the position shown in FIG. 6(b), and the piston rod of the horizontally moving cylinder 1 extends, and the conveying grid, that is, the connecting beam connected thereto.
1,・8, Connected block・1. @2, the vertical guide shaft 6s and the conveyor armom '1 are connected to the horizontal guide shaft 5.
, 60, move to the left, and move to the left side (0) t''e in Figure 6
It reaches the position shown by K. During this movement, m-guns 2m, 21 inject paint, ie slurry and top coat.

Since the pattern forming gas forms a linear pattern in the direction perpendicular to the direction of movement, when the molded product is moved to the left at a predetermined speed, a uniform coating is applied to the surface of the molded product 10. At this position, the painting guns t@ and f11 are stopped, and the upper cylinder of the lifting cylinder operates to extend the piston rod from the position shown in Figure 6 ((1) to the position shown in Figure 6 ((1)). During the process, the molded product is transferred to a pedestal or conveyor*
The vertical position of the conveyor arm S gear moves to the position shown in the figure (tortoise) and stops, and at the same time or at the same time as that stop, the lower rapid-travel lift piston operates and the piston rod is moved. 6 (+1) as the position where both piston rods are extended the most. This position only needs to be fast enough for the conveyor arm 9 to move horizontally and pass under both conveyors 6.100, and this movement is carried out by the horizontal movement cylinder 70.
The actuation of the piston rod causes the retraction conveyor grid to move back to the right side, from Figure 6(a) to Figure 6(-). Figure 6 (
+1) and Fig. 6 (-), you can see that the molded product moves, but this is not due to the transfer arm, but due to the conveyor 10 feeding the painting stage to and from there. This is because there was an offer. Finally, the lower rapid traverse cylinder lifts and lowers the cylinder to retract the four pistons, as shown in Figure 6 (
f), the position in Fig. 6(f) is exactly as shown in Fig. 6(f).
1), the next cycle is prepared. Since the low-speed feed cylinder receives and delivers molded products such as raw tiles, the high-speed feed cylinder aims to shorten the company's time. During this transportation cycle, the working time can be shortened by cleaning the painting gun as described above by using the time from the end of the painting operation time of the painting gun until the start of the next work time.

In the embodiment shown in the drawings, three coupled transport arms are shown which simultaneously reciprocate (square movement) between both conveyors and four adjacent locations of the two molded product cradle. There is. This is a practical example in which slurry painting and top coat painting are applied consecutively, but in some cases, if the top coat is not applied, one pedestal is installed between both conveyors, and two If additional work is required in addition to the two types of painting, the number can be increased to meet the need. However, it is an important feature of the present invention that a top coat can be applied almost immediately after slurry application.

Slurry paints are special low-moisture materials that require a supply tank and cleaning equipment as shown in the examples, but top coats and other low-viscosity paints require special equipment on the side. There is no. Conventional paint guns can also be used.

Since the space in which the molded products are transported is contaminated with paint, the progressive e-transport mechanism 11 is equipped with a vertically arranged wide plate to isolate it from the transport space. Only b 11 is placed in the conveyance space through a groove that allows it to move up and down. Horizontal movement is performed integrally with the separator, and lifting and lowering is performed by moving through a groove provided in the separator.

[Brief explanation of the drawing]

FIG. 1 is a front view of a coating apparatus of the present invention and an automatic cement mortar molded product manufacturing apparatus operatively connected thereto, and FIG. 2 is a plan view of the apparatus of FIG. 1. FIG. 3 is a schematic cross-sectional view showing a part of the painting gun and its accessory equipment used in the painting apparatus of the present invention. Figures 4 & 4 and 4b are plan views of the conveying device used in the coating apparatus of the present invention, showing the moving state. 5th turtle figure and sb
The figures are an elevation view and a side view showing the main parts of the progressive conveyance mechanism of the conveyance device shown in Figure 41). No. @If(1~<
1> is an elevational view showing the conveyance process of the molded product. 6... Supply conveyor, S... Transfer arm, 10...
・Delivery conveyor, 11... Progressive conveyance mechanism, 111&
, llb...Painting gun, 48...Cleaning device, 57.
58... Molded product holder, 59.60... Horizontal guide shaft, 65... Vertical guide shaft. Patent applicant Shigeo Ando Figure 6

Claims (1)

[Claims] (1) The molded product is moved from the end of the supply H7 conveyor through the coating position to the end of the delivery conveyor, and the coating time is at least 4 times.
A method for painting cement mortar molded products, which is characterized by applying one type of painting, cleaning the paint gun and transporting the molded products sequentially during the painting down time. 1. The method according to Paragraph 1 of the Patent Enclosure, characterized in that: (3) The method according to claim 1, wherein the molded product is moved at the coating position, and the coating is performed in synchronization with a certain horizontal movement period of the molded product within the molded product progressive conveyance cycle. (4) The method according to claim 3, wherein the molded product progressive conveyance cycle constitutes a rectangular circular motion. <<5>> The coating method according to claim 1, wherein the Km gun is moved from the refurbishment position to the clean position during the pause in painting and the cleaning of the paint gun. (6) at least one molded product pedestal disposed between the supply conveyor and the delivery conveyor, at least one corresponding paint gun of the type disposed above the pedestal, and a cleaning device; A plurality of transport arms that move between adjacent locations of a conveyor and a pedestal, a progressive transport mechanism that supports and drives the transport arms, and a plurality of vertical transport arms that move horizontal guide shafts. A cement mortar molded product coating device comprising a guide shaft. (7) A plurality of vertical guide shafts that move the horizontal guide shaft are connected and driven by an air cylinder, and a plurality of transfer arms that move the vertical guide shaft are connected and driven by a combined lifting air cylinder. Patent (8) characterized in that each transfer arm is bifurcated, and the interval between the forks is larger than the width of both conveyors and the pedestal. Painting equipment described in section. (9) One of the combined lifting air cylinders performs a vertical movement at low speed to reach the upper limit position by passing the molded product delivery position of the transport arm, and the other moves up and down at high speed until the transport arm reaches the lower limit position. The coating apparatus according to claim 7, characterized in that: 2. The coating apparatus according to claim 1, wherein a wide plate is vertically arranged to isolate the wheel progressive conveyance mechanism from the coating space, so that only the conveyance arm moves in the coating space.