JP5476652B2 - Immersion treatment equipment for painting - Google Patents

Description

The present invention is a coating for applying a predetermined treatment to an object to be coated by immersing the object to be coated in various treatment liquids such as a degreasing treatment liquid and an electrodeposition coating liquid in a treatment tank and moving the treatment liquid through the treatment liquid . on immersion processing apparatus.

Conventionally, in this type of immersion treatment, the extension route of the overhead conveyor for moving the object to be coated such as an automobile body at a constant moving speed is made a forward downward inclined route at the inlet side portion in the treatment tank, followed by the treatment. In the middle part of the tank, a horizontal straight path is formed, and subsequently, a front rising slope path is formed in the outlet tank side part of the processing tank. Immersion (solution entry), and then the workpiece is moved linearly in the treatment solution in a horizontal movement posture, and then the workpiece is lifted from the treatment solution in a forward and inclined movement posture (liquid discharge) (See Patent Document 1) .

  In other words, in the conventional coating dipping process, the object to be coated is simply moved while keeping the movement posture along the movement path.

Japanese Patent Laid-Open No. 11-92998

However, in the above-described conventional dipping treatment, for the purpose of improving the treatment quality (final coating quality), etc., it is possible to set the movement speed of the object to be coated and the flow speed of the treatment liquid in the treatment tank. When increasing the moving speed of the object to be coated even if it is intended to ensure a large relative speed of the processing liquid with respect to the coating (that is, the relative speed difference between the object to be moved and moving in the processing liquid). is the power required to transport the article to be coated is increased as the monitor, problems such as a dedicated speed increasing conveyor is independently required occurs a conveyor for conveying the object to be coated before and after the process.

Further, when increasing the flow rate of the processing solution in the processing tank, when such a pump power required to Tank flow of the treatment liquid is increased and monitor, problems such as also the size of the piping system to be attached to the processing tank Arise.

  In view of this situation, the main problem of the present invention is that it is possible to improve the processing quality by increasing the relative speed of the processing liquid with respect to the object while avoiding the above problems by adopting a rational movement form. In the point.

The first characteristic configuration of the present invention relates to a coating immersion treatment apparatus ,
A transport device for holding the object to be coated, and a transport device moving means for moving the object to be processed in the processing liquid in the processing tank by moving the transport device,
Equipped with an object operating means for moving the object to be coated held by the conveyor relative to the conveyor;
The movement of the coating object in the processing liquid is adjusted by moving the coating object with respect to the transport device by controlling the coating object operating means, and the processing position is adjusted by adjusting the movement attitude. An immersion treatment control means is provided for adjusting the relative cross-sectional area of the treatment liquid around the object to be coated in the tank to adjust the relative speed of the treatment liquid with respect to the object to be coated,
This immersion treatment control means is configured to adjust the movement posture of the object to be coated in the treatment liquid to the set optimum movement posture that can obtain the optimum relative speed,
With respect to a plurality of types of movement postures of the object to be treated in the processing liquid, the magnitude relationship of the relative speed of the treatment liquid with respect to the object to be coated when the object is moved and moved in each movement position in the treatment liquid is automatically determined. Is provided with a calculation means for calculating.

  In other words, taking as an example the case where the automobile body is the object to be coated, the automobile body is inclined with respect to the movement path as compared with the case where the automobile body is moved forward in the treatment liquid in a movement posture along the movement path as before. In addition, the cross-sectional area of the treatment liquid around the automobile body in the treatment tank is reduced by moving the treatment liquid in the orthogonal movement posture (in other words, the facing area of the automobile body with respect to the treatment liquid is increased). And the relative speed of the treatment liquid with respect to the automobile body around the automobile body can be increased accordingly.

  In other words, in general, the objects to be coated often have various shapes. Therefore, if the moving posture of the object to be coated in the treatment liquid is adjusted according to the shape of the object to be coated, The passage sectional area of the treatment liquid can be adjusted, and the relative speed of the treatment liquid with respect to the object to be coated around the object to be coated can be adjusted by adjusting the passage sectional area.

Therefore, according to the first characteristic configuration described above, the immersion treatment control means for adjusting the relative speed of the treatment liquid with respect to the object to be coated by adjusting the movement posture of the paint in the treatment liquid is provided . While avoiding problems such as those mentioned above that occurred in the dipping process, that is, increase in the power to convey the object to be coated, equipment for speed increasing conveyor dedicated to the treatment tank, increase in pump power, and enlargement of the incidental piping system, etc. The relative speed of the treatment liquid with respect to the surface can be adjusted to the increasing side, and thus the relative speed can be increased in this way, thereby effectively preventing foreign matter from adhering to the surface of the object to be coated. It is possible to effectively eliminate bubbles and generated heat from the vicinity of the surface of the substrate, and the treatment quality (coating quality) of the object to be coated in this kind of immersion treatment can be effectively improved.

Note that selecting the movement posture of the article to be coated is in the treatment Rieki, selects an optimal movement posture like based on simulated immersion process by test operation and simulating means of experiment or calculation or immersion treatment device What should I do?

  Further, the treatment tank is not limited to a tank in which the treatment liquid flows in the direction opposite to the traveling direction of the object to be coated, but a tank in which the treatment liquid circulates (convects) in the treatment tank, or the treatment liquid is used. Any type of tank may be used, such as a tank for storing in a staying state.

Further, in the first characteristic configuration, the immersion treatment control means adjusts the movement posture of the paint in the treatment liquid to the set optimum movement posture.

That is, in adjusting the relative speed of the treatment liquid by adjusting the moving position of the previous article to be coated as a statement to the object to be coated, properly selects the best movement posture can obtain an optimal relative velocity, the selection If the optimum movement posture is set as the above-mentioned optimum movement posture in the immersion treatment control means, the object to be coated held by the transfer machine is selected to the optimum movement posture by controlling the article movement means by the immersion treatment control means. With the automatic adjustment and the relative speed of the processing liquid with respect to the object to be optimized, the processing liquid can be moved forward by the movement of the transporting machine by the transporting means moving means.

Therefore, the effect of improving the processing quality in the above-described immersion processing can be obtained more reliably and easily.

  In the implementation of this configuration, each of the transport device, the transport device moving means, and the workpiece operating means may be of any type and structure, and the workpiece operating means may be a transport machine. In order to adjust the movement posture of the object to be treated in the processing liquid by the movement of the object to be coated, the movement of the object to be moved with respect to the transporting machine (rotation, tilting, etc.) It may be.

Furthermore, in the first feature configuration,
  With respect to a plurality of types of movement postures of the object to be treated in the processing liquid, the magnitude relationship of the relative speed of the treatment liquid with respect to the object to be coated when the object is moved and moved in each movement position in the treatment liquid is automatically determined. Since the calculating means for calculating is provided, the following effects are also obtained.

That is, it is possible to easily select the optimum moving posture of the object to be coated that can optimize the relative speed of the processing liquid with respect to the object to be coated based on the calculation result of the calculating means.

Then, by setting the optimum movement posture selected in this way as the setting optimum movement posture in the immersion treatment control means, as described above, the object to be coated held by the transport machine is controlled by the immersion treatment control means. Control can be automatically adjusted to the selected optimum movement posture, and the relative speed of the treatment liquid with respect to the object can be optimized, and the treatment liquid can be moved forward by the movement of the conveyance machine by the conveyance machine moving means.

In the implementation of this configuration, the function for automatically selecting the optimal movement posture based on the calculation result of the calculation means, or the automatically selected optimum movement posture is automatically set to the immersion treatment control means as the set optimum movement posture. If the function to perform is provided in the arithmetic means and the immersion treatment control means, the operation management of the immersion treatment can be further facilitated.

The second feature configuration of the present invention specifies an embodiment suitable for the implementation of the first feature configuration.
The immersion treatment control means is configured to adjust the movement posture of the coating object in the processing liquid to the set optimum movement posture for each coating material type, based on the information on the type of the coating object held by the conveyor. It is in a certain point.

In other words, according to this configuration, the various types of objects to be coated are adjusted to the set optimum movement posture for each object type according to the object type, so that, for example, different kinds of objects are to be used for high-mix low-volume production. Regardless of the type, the relative speed of the processing liquid with respect to the coating is reliably optimized even when processing the coating with the immersion processing equipment in a mixed state. In such a state, the objects to be coated can be advanced and moved in the treatment liquid, and in this respect, a further excellent immersion treatment apparatus for coating can be obtained.

In the implementation of this configuration, regarding the acquisition of the type information of the object to be coated, the shape of the object to be coated and the tag attached to each object to be coated are detected at the stage where the conveyor holds the object to be coated or in the vicinity thereof. Various methods such as a method obtained by reading or the like, or a method obtained as a part of production plan information from the production management apparatus can be adopted.

The third feature configuration of the present invention specifies an embodiment suitable for the implementation of either the first or second feature configuration,
The dipping treatment control means is configured to adjust the traveling movement speed of the object to be coated in the treatment liquid to the set optimum movement speed by controlling the transfer machine moving means.

  That is, according to this configuration, in addition to adjusting the relative speed of the treatment liquid with respect to the object to be coated by adjusting the movement posture of the object to be coated as described above, the traveling movement speed of the object to be coated in the treatment liquid is various. It is possible to automatically adjust to a set optimum moving speed that is appropriately set according to the processing conditions and the like, thereby making it possible to obtain a coating immersion processing apparatus that is further superior in terms of processing quality.

  In the implementation of this configuration, the traveling movement speed of the coating object in the processing liquid is automatically adjusted to the set optimum movement speed for each coating object type based on the information on the type of the coating object held by the conveyor. You may do it.

In addition, with regard to the transporting device moving means capable of adjusting the moving speed of the object to be coated, a method in which the transporting device is equipped with self-propelling means having various structures capable of adjusting the self-running speed as the transporting device moving means, or transporting. It is possible to adopt various methods and structures such as a method of juxtaposing along a moving path of a transfer machine, using a transfer machine delivery means of various structures capable of adjusting the machine feed speed as a transfer machine moving means. it can.
The fourth characteristic configuration of the present invention specifies an embodiment suitable for the implementation of any of the first to third characteristic configurations,
The calculation means or the immersion treatment control means is configured to automatically select an optimum movement posture capable of obtaining the optimum relative speed based on a calculation result of the calculation means.
According to this configuration, the operation management of the immersion process can be further facilitated.
The fifth feature configuration of the present invention specifies an embodiment suitable for the implementation of the fourth feature configuration.
The arithmetic means or the immersion treatment control means is configured to automatically set the automatically selected optimum movement posture as a set optimum movement posture.
According to this configuration, the operation management of the immersion process can be further facilitated.

Overall configuration diagram of painting system (especially pre-treatment process part) Overall configuration of painting system (especially painting process department) Front part of the conveyor Perspective view of conveyor Enlarged front view of the conveyor Enlarged side view of the main parts of the conveyor Side view showing the processing mode in the immersion processing section Side view showing the processing mode in the central spray processing unit The side view which similarly shows the processing form in the central spray type processing part Side view showing a processing mode in another spray type processing unit

  1 and 2 show a coating system related to an electrodeposition coating facility for an automobile body. In this electrodeposition coating facility, as a plurality of processing sections in a pretreatment process section, a hot water washing section 1, a preliminary degreasing section 2, and a degreasing process are shown. Part 3, first degreasing water washing part 4, second degreasing water washing part 5, surface adjustment part 6, chemical conversion treatment part 7, first chemical conversion water washing part 8, second chemical conversion water washing part 9, pretreatment pure water water washing part 10, They are arranged in that order in the transport direction of the automobile body W that is the object to be coated.

  In addition, as a plurality of processing units in the coating process unit following the pretreatment process unit, the electrodeposition processing unit 11, the first UF water washing unit 12, the second UF water washing unit 13, the third UF water washing unit 14, the first RO water washing unit 15, the first The 2RO water washing unit 16, the electrodeposited pure water washing unit 17, and the air blow unit 18 are arranged in that order in the conveying direction of the automobile body W (hereinafter sometimes abbreviated as a body).

  Among each processing unit, the degreasing processing unit 3 and the chemical conversion processing unit 7 in the preprocessing process unit, and the electrodeposition processing unit 11, the second UF water washing unit 13, and the first RO water washing unit 15 in the coating process unit are processed as main processing forms. It is an immersion type processing unit that immerses the transport body W in the processing liquid L in the tank T. In the degreasing processing unit 3 and the chemical conversion processing unit 7, the transport body W is degreased in the degreasing tank T and the chemical conversion tank T. The surface of the transport body W is subjected to a degreasing process or a chemical conversion process by being immersed in the chemical conversion liquid L therein.

  Moreover, in the electrodeposition processing part 11, the electrodeposition process which forms a coating film on the surface of the conveyance body W by immersing the conveyance body W in the electrodeposition coating liquid L in the electrodeposition tank T is performed, and the 2nd UF water washing part In 13 and the 1st RO water washing part 15, the washing body is given to the conveyance body W after the electrodeposition process by immersing the conveyance body W in the washing water L in the washing tank T.

  In addition, each UF water washing part 12-14 is a water washing part which flushes the conveyance body W using the purified water L by an ultrafiltration membrane (UF), and each RO water washing part 15 and 16 is a reverse osmosis membrane (RO). This is a water washing section for washing the transport body W with the purified water L.

  On the other hand, the processing units other than these immersion processing units are spray type processing units that spray the ejection fluid F (the ejection liquid or the ejection gas) by the ejection means N such as a nozzle to the transport body W as a main processing form, In the hot water washing unit 1, the preliminary degreasing unit 2, and the surface treatment unit 6, hot water for hot water washing, pre-degreasing treatment liquid, or surface conditioning treatment liquid is sprayed on the conveyance body W as the ejection fluid F. A hot water washing process, a preliminary degreasing process, or a surface conditioning process is performed.

  Moreover, in each spray type water-washing part, washing water is sprayed on the conveyance body W by spraying washing water as the ejection fluid F, and the air blow part 18 sprays air on the conveyance body W as the ejection fluid F. Then, a draining process and a pre-drying process are performed on the transport body W after the water washing process.

  In addition, the coating process section is equipped with a preheating furnace, a baking / drying furnace, a cooling processing section, etc. arranged in that order in the transport direction of the transport body W in addition to the air blow section 18, and this coating process section (undercoating process section). Subsequently, an intermediate coating process section and a top coating process section are provided, but in this example, the description thereof is omitted.

  As shown in FIGS. 3 to 6, the transport device U that sequentially transports the automobile body W that is the object to be coated to the processing units 1 to 18 has a pair of processing units 1 to 18 on the guide frame 20. In addition to laying rails 21, a plurality of transfer machines 22 that are sequentially moved along the rails 21 to the respective processing units 1 to 18 are provided, and these transfer machines 22 hold the transfer bodies W one by one. In this state, the vehicle body W is sequentially transported to the processing units 1 to 18 by moving the transporting machines 22 across the processing units 1 to 18 and sequentially moving them.

  The conveyor 22 includes a traveling wheel 23 that rolls on the rail 21, a retaining wheel 24 that abuts the rail 21 from both sides to prevent the conveyor 22 from shaking, and a conveyor that contacts the lower surface of the rail 21. 22 is provided with a suspension wheel 25 for preventing the lift of 22 and a current collector 27 for receiving the driving power of the mounting device from a power supply rail 26 extending along the rail 21 on the side surface of one rail 21. .

  In addition, a traveling friction plate 28 is provided at the lower portion of the transport device 22, and the idle roller 29 and the drive roller 30 sandwich the travel friction plate 28 on the moving path of the transport device 22 along the rail 21. A pair of pressure rollers and a transfer motor 31 for driving and rotating the drive roller 30 in the pair of pressure rollers are juxtaposed in the rail extending direction at a predetermined interval as a conveying machine delivery means. The idle roller 29 and the drive roller The conveying plate 22 is moved along the rail 21 by feeding the friction plate 28 clamped by the pair of clamping rollers 30 to the clamping unit by the clamping roller pairs 29 and 30 by the driving rotation of the driving roller 30 by the transfer motor 31. To move.

  That is, the juxtaposed group of the pair of nipping roller pairs 29 and 30 and the transfer motor 31 constituting the transfer device delivery means moves the transfer devices 22 sequentially to the processing units 1 to 18. By configuring the means and adjusting the rotational speed of each transfer motor 31 by inverter control or the like, it is possible to individually adjust the moving speed (that is, the feeding speed) of each conveyor 22 at each moving position as needed. it can.

  In addition, the transport device 22 is equipped with a lifting device 32 having a lifting arm 32A and a drive arm 32B, and a suspension mechanism 33 that suspends and holds the transport body W is provided at the tip of the lifting arm 32A. It is.

  The elevating device 32 rotatably supports a first support shaft 34 having the base end of the drive arm 32B connected and fixed thereto by a fixed bearing 35 on the transport device 22, while being guided by a guide 36 in the front-rear direction (the transport device 22). The moving support frame 37 that is movable in the moving direction) is provided in the conveyor 22, and the second support shaft 39 is rotatably supported by the moving bearing 38 provided on the moving mount 37, and is moved up and down on the second support shaft 39. The base end of the arm 32A is rotatably connected, and the distal end of the drive arm 32B is pivotally connected to the center of the lift arm 32A.

  Further, an elevator drive device 42 for moving the slider 40 back and forth by driving rotation of the screw shaft 41 is provided in the transport device 22, and an operation arm 43 connected and fixed to the slider 40 and the first support shaft 34 of the elevator drive device 42. Are connected by a connecting rod 44.

  That is, the elevating device 32 swings the operating arm 43 of the first support shaft 34 via the connecting rod 44 by moving the slider 40 of the elevating drive device 42 back and forth by driving rotation of the screw shaft 41 by the drive motor Ma. As a result, the first support shaft 34 is rotated to drive and swing the drive arm 32B, and the swing of the drive arm 32B causes the moving base 37, the moving bearing 38, and the second support shaft 39 to move back and forth (in other words, Then, the lifting arm 32A is swung around the second support shaft 39 in a form involving the approach and separation of the second support shaft 39 with respect to the first support shaft 34, so that the transport body W held by the suspension mechanism 33 is moved. It is structured to be raised and lowered with respect to the conveyor 22.

  Reference numeral 45 denotes a pneumatic cylinder that urges the operating arm 43 of the first support shaft 34 to the ascending operation side of the automobile body W via the connecting rod 44. This urging reduces the load on the drive motor Ma that is a lifting motor. To do.

  The suspension mechanism 33 rotatably attaches a suspension support shaft 46 to the tip of the lifting arm 32A, and connects the suspension member 47 coupled to the suspension support shaft 46 to the longitudinal center of the upper frame 48. The upper end of the vertical frame 49 is pivotally connected to both the front and rear end portions of the upper frame 48, and the horizontal frame 50 is extended from the lower end of each vertical frame 49 to the opposite side of the conveyor 22, so The front and rear ends of each of the two lower frames 51 are rotatably connected to the horizontal frame 50, and the transport body W is placed on the frame frame composed of the horizontal frame 50 and the lower frame 51 with this structure. In this state, the transport body W is held by the holders 52 at the four corners of the frame.

  The upper frame 48, the front and rear vertical frames 49, and the lower frame 51 constitute a parallel link mechanism. On the other hand, a driven sprocket 53 attached to the suspended support shaft 46 and a drive sprocket attached to the second support shaft 39 are provided. 54, a posture changing drive device 58 that winds the transmission chain 55 around and moves the slider 56 back and forth by driving rotation of the screw shaft 57 is provided on the transporting machine 22, and the slider 56 of the posture changing drive device 58 and A body posture changing device 61 is configured by connecting an operation arm 59 connected and fixed to the second support shaft 39 by a connecting rod 60.

  That is, the body posture changing device 61 moves the slider 56 of the posture changing drive device 58 back and forth by driving and rotating the screw shaft 57 by the drive motor Mb to move the operation arm 59 of the second support shaft 39 via the connecting rod 60. By swinging, the second support shaft 39 is rotated to drive and rotate the drive sprocket 54, and the rotation of the drive sprocket 54 causes the suspension support shaft 46 to rotate with the driven sprocket 53 via the transmission chain 55. By swinging the lower member 47, the posture of the upper frame 48 and the lower frame 51 is changed with the deformation of the parallel link mechanism including the upper frame 48, the front and rear vertical frames 49, and the lower frame 51. A structure in which the held transport body W is changed in posture to a forward and downward tilt posture with respect to the transport device 22. Are to.

  That is, the elevating device 32 and the body posture changing device 61 constitute body operating means for moving (moving up and down and tilting) the automobile body W transported by the transporter 22 with respect to the transporter 22.

  On the other hand, this electrodeposition coating system is provided with an overall controller CC (an example of an overall control means) that oversees the control of a plurality of transporters 22 that are sequentially moved across the processing units 1 to 18. The overall controller CC includes information i on the movement position of each transport device 22 obtained by the position detection means Is and the body type of each vehicle body W mounted and held on each transport device 22 obtained by the body type detection means Bs. Based on the information b, by controlling the transfer motors 31 juxtaposed in the extending direction of the rail 21 and the lifting device 32 and the body posture changing device 61 provided in each transporter 22, the movement of the transporter 22 is controlled. In the conveyance of the automobile body W, the conveyance body W is set to the combined movement pattern P set for each processing unit and each body type (that is, the movement of the conveyance machine 22 and the conveyance machine 22 of the conveyance body W Are the ones moving operation by the moving pattern) consisting of a synthetic with a mobile operation.

  As will be described later, the combined movement pattern P is a movement pattern P (r, v, θ) for the movement path r, movement speed v, and movement posture θ of the conveyance body W held by the conveyance device 22.

  In this example, unless otherwise specified, the moving speed v of the transport body W refers to the moving speed in the direction along the transport path r, and the moving posture θ of the transport body W refers to the horizontal moving posture.

  As for the control of each transfer motor 31, a traveling relay controller Ca that adjusts the rotational speed (that is, the transfer speed of the transfer machine) of the transfer motors 31 juxtaposed in the extending direction of the rail 21 by inverter control or the like. The relay controller Ca for traveling is controlled by a control command from the general controller CC, so that the rotational speed of each of the transfer motors 31 is adjusted at any time to move each transport device 22 at each moving position. The speed is individually adjusted according to the set composite movement pattern P for each processing unit and each body type.

  Further, regarding the control of the lifting device 32 and the body posture changing device 61 equipped in each conveyor 22, the drive motor Ma of the screw shaft 42 in the lifting device 32 and the drive motor Mb of the screw shaft 57 in the body posture changing device 61 are controlled. Relay controller Cb for body operation (an example of relay control means) is mounted on each transport device 22, and each relay controller Cb for body operation mounted on each transport device 22 is controlled from the overall controller CC. By performing the control operation according to the command, the transport body W of each transport machine 22 is configured to move with respect to each transport machine 22 according to the set combined movement pattern P for each processing unit and each body type.

  With the above configuration, each of the processing units 1 to 18 performs a predetermined process on the transport body W by moving the transport body W in accordance with the set combined movement pattern P for each processing unit and each body type. To do.

- immersion processor for (especially electrodeposition treatment unit 11) movement at For the immersion processing unit, as set synthetic moving pattern P per each processing unit and the body type, in particular (see Figure 7),
A tank entering process in which the transport body W held by the transport machine 22 is lowered and immersed in the processing liquid L in the processing tank T, and subsequently, the transport body W is moved forward in the processing liquid L in the processing tank T. In-tank progressing step, followed by a step of raising the transport body W and pulling it up from the processing liquid L in the processing bath T, followed by a unloading step of unloading the transport body W from the immersion processing unit, About the movement path r, the movement speed v, and the movement posture θ of the transport body W during and between the processes of
The movement path change pattern Pr (r), the movement speed change pattern Pv (v), and the movement posture change pattern Pθ (θ) for each body type are set in the overall controller CC (that is, P (r, v, θ) = Pr (r) + Pv (v) + Pθ (θ)) .

  Then, by setting these three change patterns Pr, Pv, and Pθ, as shown in FIG. ~ D. The transport body W of each transport machine 22 is moved in such a travel mode (that is, a basic travel mode that is the basis of the individual travel mode for each body type).

  a. In the tank entry process, the transport body W held by each transporter 22 is processed with a steeply forward-downward movement path r and a steeply forward-downward movement posture θ along the forward-downward movement path r and with a large movement speed v. It is made to enter into the tank T and is immersed in the processing liquid L in the processing tank T.

  b. In the unloading process, the transport body W held by each transporter 22 is processed with a steeply forward moving path r and a steeply forward moving posture θ along the front rising moving path r and with a large moving speed v. The tank is lifted from the processing liquid L in the tank T and is discharged from the processing tank T.

  That is, by adopting such a movement mode of the entry / exit tank, it is possible to shorten the length of the treatment tank T by rapidly immersing (injecting) the transport body W into the treatment liquid L and drawing it out of the treatment liquid L, and Then, it is possible to prevent processing unevenness (for example, so-called stepping in the electrodeposition process) caused by insufficient liquid input speed when the transport body W is introduced into the processing liquid L in the tank entering process.

  c. In the in-tank advancement process, the transport body W held by each transport machine 22 is advanced in the liquid on the horizontal movement path r and at an appropriate moving speed v that allows the processing liquid L to be processed to the transport body W satisfactorily.

  d. In the unloading process, the transfer body W held by each transfer machine 22 is unloaded and moved along the horizontal movement path r and in the inclined movement posture θ, and the discharge of the processing liquid L remaining in the bag structure portion or the like of the transfer body W is urged.

  In addition, while adopting these basic movement forms, individually, the movement form for each body type corresponding to the body type of the transport body W held by each transporter 22 (in short, the above basic movement form is referred to as the body type). As a moving form finely adjusted according to the following), for example, the following e. ~ I. The transport body W of each transport machine 22 is moved in the moving form as described above.

  e. The buoyancy that occurs when the transport body W held by each transport machine 22 is immersed in the processing liquid L varies depending on the body type of the transport body W, and also, when the liquid enters the body local part, Where the degree and location vary depending on the body type, the forward downward movement path r and the forward downward movement posture θ in the tank entry process are set to the optimum inclination angle for each body type that suppresses the occurrence of buoyancy and bubble entrapment as described above. The transport body W is introduced into the processing liquid L in the processing tank T in the state of the forward downward movement path r and the forward downward movement posture θ of the optimum inclination angle.

  f. In contrast to the fact that the main cause of buoyancy generation differs depending on the body type of the transport body W, only the period during which the main cause of buoyancy generation in the transport body W is in the process of entering the processing liquid L in the tank entry process. The transfer body W enters the processing tank T in the optimum movement speed change mode for each body type that decreases the moving speed v (that is, the liquid entering speed) and increases the moving speed v for other periods in the tank entering process. Let

  That is, by adopting such a tank entering mode for each body type according to the body type, the transfer body W held by the transfer machine 22 is transferred due to a large buoyancy generated when the liquid enters the processing liquid L. It prevents conveyance troubles such as separation from the machine 22 and processing failures caused by bubbles caught in the body part.

g. If the transfer body θ is moved in a state of being immersed in the processing liquid L in the processing tank T and the movement posture θ of the transport body W is adjusted, the processing liquid L around the transport body W in the processing tank T is adjusted. The passage sectional area can be adjusted, and the relative speed of the processing liquid L with respect to the transport body W can be adjusted by adjusting the passage sectional area.
Therefore, in the in-tank advancement process, the optimum movement posture θ for each body type that can optimize the relative speed of the processing liquid L with respect to the transport body W (for example, the forward inclination movement posture θ of the optimum inclination angle or the optimum inclination angle). It moves forward in the liquid in a forward rising movement posture θ, and in some cases a vertical movement posture.

  In other words, this prevents foreign matter from adhering to the transport body W, causing bubbles in the vicinity of the transport body W, and staying of generated heat, which cause a reduction in processing quality.

  h. When pulling up the transport body W from the processing liquid L in the tank exiting process, the quality of the processing liquid L coming out from the bag structure portion etc. in the transport body W differs depending on the body type. In addition, the transport body W is moved from the processing tank T in the state in which the forward upward movement posture θ is set to the forward upward movement path r of the optimum inclination angle and the upward upward movement posture θ of the optimum inclination angle for each body type from which the treatment liquid L can easily escape. Let go.

  i. In the carry-out process, when the transport body W is carried out in the inclined movement posture θ, whether the residual processing liquid L is discharged from the bag structure portion or the like in the transport body W differs depending on the body type. As the tilting movement posture θ, the transport body W is set to the rearward downward movement posture θ of the optimum inclination angle for each body type, or is set to the forward downward movement posture θ of the optimum inclination angle, or the optimum inclination. The transport body W is carried out and moved in an optimum tilting operation mode for each body type that improves the discharge of the residual processing liquid L from the transport body W, such as swinging back and forth within an angle range.

-About a movement operation in a spray type processing part About a spray type processing part, as setting synthetic movement pattern P for every processing part and every body type, specifically (refer to Drawing 8-Drawing 9 and Drawing 10),
A carrying-in process of carrying the transport body W held by the transport machine 22 into the spraying treatment area S of the ejected fluid F by the ejection means N, and an intra-regional proceeding process for moving the transport body W in the spraying treatment area S. Subsequently, the movement path r, the movement speed v, and the movement posture θ of the conveyance body W during and between the steps of the unloading process of unloading the conveyance body W from the spray processing area S,
Similar to the immersion processing unit, a movement path change pattern Pr (r), a movement speed change pattern Pv (v), and a movement posture change pattern Pθ (θ) for each body type are set in the overall controller CC.

  And among the spray type processing units, the spray type processing unit (for example, the electrodeposited pure water washing unit) in which the spraying means N such as nozzles are arranged in the upper part or the side part of the spraying processing region S in the horizontal one row state or the horizontal two row state. 17, for the latter half of the pre-treatment pure water rinsing section 10 and the air blowing section 18, such as a spray type processing section that intensively blows a high-pressure jet fluid F), by setting the three change patterns Pr, Pv, Pθ, As shown in FIGS. 8 to 9, as a movement form for each body type corresponding to the body type of the transport body W held by each transport machine 22, for example, the following j. ~ M. In this manner, the transport body W of each transport machine 22 is moved.

  j. Discharge of the remaining processing liquid L (or F) that has entered the bag structure of the transport body W held by each transport machine 22 in the previous processing unit 22 to the spraying processing region S side (that is, equipped in the spraying processing region S) In order to promote the discharge to the drainage section), the transport body W is basically transported to the spray treatment area S in the forward downward movement posture θ in the carry-in process, and the remaining treatment liquids L and F at this time are discharged. Pass / Fail depends on the body type.

  On the other hand, in the carrying-in process, the transport body W is sprayed in the state of the forward downward movement posture θ of the optimum inclination angle for each body type that improves the discharge of the remaining processing liquids L and F to the spray processing area S side. Carry it into zone S.

  k. When the transport body W is advanced in the spray processing zone S in the spray processing zone S with the horizontal movement path and the horizontal movement posture in the region advancement process, the jetting means N and the target fluid on the transport body W to which the jet fluid F is blown by the jetting means N are sprayed. The positional relationship with the spraying part (here, the part to be sprayed at each time point that moves on the transport body W in the direction opposite to the body traveling direction by the relative movement of the ejection means N with respect to the travel of the transport body W in the region) In view, the distance d (spraying distance) between the jetting means N and the sprayed portion sequentially changes depending on the body shape as the transport body W progresses in the region, and the transport body W on the transport body W with respect to the direction of fluid ejection from the jetting means N The direction α (spraying direction) of the portion to be sprayed also changes sequentially depending on the body shape, and in addition, the spraying distance d depends on the body shape difference due to the body type of the transport body W. Form of changes in spray direction α is more different.

  On the other hand, in the region advancement process, the distance d (spraying distance) between the ejection means N and the sprayed portion on the transport body W is kept constant and the fluid is ejected from the ejection means N in a side view. On the other hand, the transport body W is caused to travel in the region in an optimal travel mode for each body type that maintains the spraying state (α = 90 °) in which the sprayed portion on the transport body W is in a vertical posture.

  l. Further, the presence or absence of a specific sprayed part x (for example, a specific sprayed part that is a fixed part on the transport body W such as a gap structure part) where the spraying process of the sprayed fluid F by the spraying means N should be performed with particular emphasis. In contrast to the fact that the existence position differs depending on the body type, when the ejected fluid F by the ejecting means N is sprayed on the specific sprayed part x on the transport body W in the intra-regional advancement process (that is, as shown in FIG. 8B). In the state), the specific sprayed part x is brought close to the spraying means N to shorten the spraying distance d, and the in-progress of the transport body W is temporarily stopped, temporarily slowed down, or temporarily switched back and forth. The transport body W travels in the region in an optimal travel mode for each body type that causes the sprayed fluid F to be sprayed to the specific sprayed part x longer in time than the other parts, for example, by making it into a state. To.

  In addition, when the specific sprayed part x is brought close to the ejection means N as described above, the adjustment of the spraying direction in which the specific sprayed part x is in a vertical posture or a predetermined oblique posture with respect to the direction of fluid ejection from the jetting means N is also performed. It is desirable to do this.

  m. In order to facilitate the discharge of the spray fluid F (washing water) that has entered the bag structure of the transport body W or the like, the transport body W of each transport machine 22 is basically transported in an inclined movement posture θ in the transport process, At this time, the quality of discharge of the incoming fluid F (incoming washing water) varies depending on the body type.

On the other hand, in the carry-out process, as the tilting operation for bringing the transport body W of each transport machine 22 into the tilting movement posture θ, the transporting body W is set to the rearward moving posture θ after the optimum tilt angle for each body type, or optimal Conveying body W with the optimal tilting action for each body type that improves the discharge of the inflowing fluid F (wash water), such as the forward downward movement posture θ of the tilt angle, or swinging back and forth within the optimal tilt angle range (In general, the air blow unit 18 does not require a tilting operation in the carry-out step) .

  The above-mentioned J. ~ M. These movement forms can also be applied to the spray-type treatment unit other than the electrodeposition pure water washing unit 17, the latter half of the pretreatment pure water washing unit 10, and the air blow unit 18.

  On the other hand, among the spray-type treatment units, a spray-type washing unit (that is, a relatively low-pressure washing water F) in which a large number of ejection means N such as nozzles are arranged in the spray treatment area S in a grouped enclosure arrangement form with respect to the transport body W. 10 is widely sprayed on the transport body W in a grouped manner), the settings of the three change patterns Pr, Pv, and Pθ allow the transport body W held by each transport machine 22 to be set as shown in FIG. As a movement form for each body type according to the body type, for example, the following n. ~ P. In this manner, the transport body W of each transport machine 22 is moved.

  n. As in the case of the centralized spray processing unit, basically, the transport body W of each transporter 22 is transported to the spray processing area S in the forward downward movement posture θ in the carry-in process. The discharge of the remaining processing liquid L (or F) entering the bag structure or the like of the bag differs depending on the body type, and the discharge of the remaining processing liquid L, F to the spraying treatment area S side is better in the carry-in process. The transport body W is carried into the spraying treatment area S in the state of the forward downward movement posture θ of the optimum inclination angle for each body type to be performed.

  o. Further, basically, in the intra-regional advancement process, the transport body W held by each transporter 22 is moved forward and backward to increase the processing effect of the spraying process (that is, the cleaning effect by spraying the cleaning water). The specific sprayed portion x (for example, a gap structure portion) to be subjected to the spraying process of the ejected fluid F by the means N is ejected in the intra-regional progressing process, while the presence or absence and the position of the specific sprayed portion x vary depending on the body type. When the ejected fluid F from the means N is sprayed on the specific sprayed part x on the transport body W, the travel of the transport body W is temporarily stopped, temporarily slowed down, or temporarily switched back and forth. Thus, it is optimal for each body type to spray the jetted fluid F (wash water) on the specific sprayed part x on the transport body W longer in time than the other parts. In row movement form, to regional proceed conveyance body W.

  p. As in the case of the centralized spray processing unit, basically, the transport body W of each transport machine 22 is transported and moved in the inclined movement posture θ in the transport process, but the spray fluid that has entered the bag structure of the transport body W, etc. In contrast to the fact that the quality of F (wash water) discharge varies depending on the body type, in the carry-out process, the transport body W is tilted optimally for each body type as a tilting operation that places the transport body W in the tilting movement posture θ. Improve the drainage of the incoming fluid F (washing water), for example, by setting the angle to the downward moving posture θ, or setting the moving posture θ to the front at the optimum tilt angle, or swinging back and forth within the optimum tilt angle range. The transport body W is carried out and moved in an optimum tilting operation mode for each body type.

-Regarding the movement operation relationship between the processing units In the electrodeposition processing unit 11 among the immersion processing units, the preceding transport body W and the subsequent transport body W in the processing liquid L in the processing tank T (electrodeposition tank) When the interval is small, the processing quality is deteriorated (so-called bipolar failure) due to mutual interference of the electrodeposition processing on the transport body W.

  On the other hand, the setting of the synthetic movement pattern P (Pr, Pv, Pθ) for each processing unit and body type for the electrodeposition processing unit 11, and the degreasing processing unit 3 and chemical conversion processing which are other immersion processing units About the entry / exit tank process in each of the degreasing process part 3, the chemical conversion process part 7, and the electrodeposition process part 11 by the setting of the synthetic | combination movement pattern P (Pr, Pv, P (theta)) for every process part about the part 7, and every body kind. Moves the preceding conveyance body W and the subsequent conveyance body W at a movement interval e that can reliably prevent contact interference between them.

  And in the electrodeposition coating part 11, the preceding conveyance body W and the subsequent conveyance body W22 are advanced in the liquid in the movement form in which the movement interval e is expanded in the in-tank process 11, and conversely, the degreasing treatment part 3 and the chemical conversion treatment are performed. In the section 7, the preceding transport body W and the subsequent transport body W are advanced in the liquid in a state where the movement interval e is reduced within a range where the contact interference between the preceding transport body W and the subsequent transport body W does not occur.

  That is, by adopting such a movement form related to the movement interval, contact interference between the preceding transport body W and the subsequent transport body W can be reliably prevented, and so-called bipolar defects in the electrodeposition processing unit 11 are further reduced. The entire painting facility can be downsized while reliably preventing it.

Other Controls The transport body W that has been drained or pre-dried by the air blow unit 18 is transferred to a transport carriage in a transport device for transport in the furnace and sequentially transported to the subsequent pre-drying furnace and baking drying furnace. The transfer process of the transfer body W, the transfer process of returning the empty transfer machine 22 without the transfer body W to the body receiving unit following the transfer process, and the next transfer body W is received by the body receiving unit. Also in each of the body receiving processes, the overall controller CC controls the transfer motor 31, the lifting device 32 and the body posture changing device 61 installed in each transport device 22 based on the movement position information i of each transport device 22. This is done automatically.

  As for the position detection means Is, a method of obtaining the movement position information i of each conveyance machine 22 based on the detection information of the conveyance machine detection sensors juxtaposed along the movement path of the conveyance machine 22 or the movement distance of each conveyance machine 22 There are various methods such as a method of obtaining the movement position information i of each conveyor 22 based on the measurement information of the measuring means for measuring the position, or a method of obtaining the movement position information i of each conveyor 22 based on the imaging information of the surveillance camera. Things can be adopted.

  The body type detection means Bs also obtains the body type information b by detecting the body shape at the stage of holding the automobile body W on the conveyor 22 or in the vicinity thereof, or reading the tag attached to each automobile body W. Various methods such as a method and a method of obtaining body type information b as part of production plan information from a production management device of a painting system can be adopted.

  On the other hand, in this coating system, a simulation device SM is provided together with the overall controller CC. This simulation device SM includes data on the structure of each processing unit 1 to 18, data on processing contents, Based on the data on the movement characteristics, the data on the operation characteristics of the lifting device 32 and the posture changing device 61, the data on the shape and structure of each body type of the automobile body W to be painted, etc. For each automobile body W, the combined movement pattern P for each processing unit and body type (specifically, the three change patterns Pr, Pv, Pθ for each processing unit and each body type) is changed variously. Treatment process and treatment result of each treatment unit 1-18 (for example, on the transport body W in the tank advancement process in the immersion treatment) Which simulates the process liquid such as the relative speed of the magnitude relationship between L) while monitor display to be.

  The simulation apparatus SM performs processing in accordance with selection criteria set including various reference elements such as weighting degree of processing quality, weighting degree of processing efficiency, weighting degree of energy saving, and weighting degree of operation cost. Considering the relationship between the parts, an automatic selection function for automatically selecting the optimum combined movement pattern P (Pr, Pv, Pθ) for each body type for each of the processing units 1 to 18 is provided.

  In addition, an optimum combined movement pattern P (Pr, Pv, Pθ) for each body type for each of the processing units 1 to 18 automatically selected in this way is automatically sent to the overall controller CC after receiving the operator's approval operation. It also has an automatic setting function to set automatically.

  That is, prior to the operation of the newly installed painting system, or when a new body type automobile body W is added as a painting target, or when any one of the processing units is modified, the operator uses the simulation device SM in a timely manner. The optimum combined movement pattern P (Pr, Pv, Pθ) for each processing unit and body type is selected, and the optimal combined movement pattern P (Pr, Pv, Pθ) for each selected processing unit and body type is selected. ) In the overall controller CC, the processing units 1 to 18 cause the transport bodies W of the transport machines 22 to move in accordance with the optimal set composite movement pattern P (Pr, Pv, Pθ).

  As mentioned above, in the coating system of this embodiment, the processing tank T of the conveying apparatus U and the immersion type processing unit immerses the workpiece W (automobile body) in the processing liquid L in the processing tank T, and the inside of the processing liquid L. A coating immersion treatment apparatus that performs a predetermined treatment on the article to be coated W by being moved forward is configured.

  Moreover, in the coating system of this embodiment, about the immersion process (especially in-tank progress process) in an immersion type process part, by adjusting the moving attitude | position θ in the process liquid L of the to-be-coated object W, in the process tank T The relative cross-sectional area of the treatment liquid L around the workpiece W is adjusted to adjust the relative speed of the treatment liquid L with respect to the workpiece W.

  Then, the overall controller CC is to be coated with the conveyor 22 based on the type information (body type information b) of the article W in the immersion process (particularly the in-tank process) in the immersion type processing unit. By controlling the operation means (elevating device 32 and body posture changing device 61) to move the workpiece W relative to the transport device 22, the movement posture θ of the workpiece W in the processing liquid L is controlled. A dipping process control unit is configured to adjust the set optimum movement posture (that is, the optimum movement posture set as the set posture change pattern Pθ) for each coating material type according to the coating material type.

  In addition, the simulating apparatus SM has various moving postures θ (that is, various moving posture changes) in the treatment liquid L with respect to various kinds of objects to be coated W in the immersion treatment (particularly, in-tank progressing step) in the immersion type treatment unit. Computation means for automatically computing the magnitude relationship of the relative speed of the treatment liquid L with respect to the workpiece W when it is moved forward in the pattern Pθ).

[Another embodiment]
The traveling movement speed v of the article W in the treatment liquid L may be adjusted according to the movement posture θ of the article W adjusted by the immersion treatment control means CC.

  Further, in this case, together with the posture adjustment function for adjusting the moving posture θ of the workpiece W in the processing liquid L to the set optimum moving posture, the traveling movement speed v of the workpiece W in the processing liquid L is set to the optimum moving speed. The immersion treatment control means CC may be provided with a speed adjustment function such as automatic adjustment.

In the practice of the by that the coating wearing immersion treatment apparatus of the present invention, an object to be coated to be processed is not limited to the automobile body, such as a casing or parts of automotive parts and flat products or electrical equipment, processed various ones It can be set as a to-be-coated article.

Further, the coating wearing immersion treatment device that by the present invention is not limited to electrodeposition coating, can be applied to a coating object processing of various purposes in painting various methods.

  The present invention can be applied to various kinds of coating immersion treatments for performing predetermined treatments on a coating object by immersing the coating object in a treatment liquid in a treatment tank and moving it through the treatment liquid. it can.

W object to be coated T treatment tank L treatment liquid θ moving posture 22 carrier 29, 30, 31 carrier moving means 32, 61 object moving means P (θ) set optimum moving posture CC immersion treatment control means v moving speed b Type information SM calculation means

Claims (5)

A dipping treatment apparatus for coating that applies a predetermined treatment to a coated object by immersing the object to be treated in a treatment liquid in a treatment tank and moving it through the treatment liquid,
A transport device for holding the object to be coated, and a transport device moving means for moving the object to be processed in the processing liquid in the processing tank by moving the transport device,
Equipped with an object operating means for moving the object to be coated held by the conveyor relative to the conveyor;
The movement of the coating object in the processing liquid is adjusted by moving the coating object with respect to the transport device by controlling the coating object operating means, and the processing position is adjusted by adjusting the movement attitude. An immersion treatment control means is provided for adjusting the relative cross-sectional area of the treatment liquid around the object to be coated in the tank to adjust the relative speed of the treatment liquid with respect to the object to be coated,
This immersion treatment control means is configured to adjust the movement posture of the object to be coated in the treatment liquid to the set optimum movement posture that can obtain the optimum relative speed,
With respect to a plurality of types of movement postures of the object to be treated in the processing liquid, the magnitude relationship of the relative speed of the treatment liquid with respect to the object to be coated when the object is moved and moved in each movement position in the treatment liquid is automatically determined. A dipping treatment apparatus for coating, which is provided with a calculation means for calculating . The immersion treatment control means is configured to adjust the movement posture of the coating object in the processing liquid to the set optimum movement posture for each coating material type, based on the information on the type of the coating object held by the conveyor. The coating immersion treatment apparatus according to claim 1 . The coating according to claim 1 or 2, wherein the immersion treatment control means is configured to adjust the traveling movement speed of the article to be coated in the treatment liquid to a set optimum movement speed by controlling the transfer machine moving means. Immersion treatment equipment. The calculation unit or the immersion treatment control unit is configured to automatically select an optimal movement posture capable of obtaining the optimal relative speed based on a calculation result of the calculation unit. The coating immersion treatment apparatus according to claim 1. 5. The coating immersion treatment apparatus according to claim 4, wherein the calculating means or the immersion treatment control means is configured to automatically set the automatically selected optimum movement posture as a set optimum movement posture .

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