JP2008178812A - Method and apparatus for applying coating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce pass trouble caused by intrusion of a foreign substance to a coating agent when the coating agent is applied to a material to be coated having much misloading or adhesion of the foreign substance. <P>SOLUTION: The coating agent 4 housed in a housing member 3 is supplied to a coating member 5 via a supply mechanism 6 having a supply pump 6a, a connection pipes 6b, 6c and the like and is made to flow down from the coating member 5 to be applied to the material 2 to be coated which is intermittently transported by the transporting mechanism 1. At the same time, the excess coating agent 4 not applied to the material 2 to be coated is returned to the housing member 3 via a recovery mechanism 7 having a recovery member 7a, a filter member 7c and the like and is supplied again to the coating member 5. In such a case, the coating agent 4 flowing down from the coating member 5 and having no risk of the intrusion of the foreign substance is intercepted to be immediately returned to the housing member 3 through an interception mechanism 8 having an interception member 8a, a reflux pipe 8b and the like in a period from time just after coating on the preceding material 2 to be coated is finished till time just before the coating on the succeeding material 2 to be coated is started. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coating agent coating method and a coating agent coating apparatus.

  Conventionally, as means for applying a coating agent such as a paint or an adhesive to the surface of a material to be coated such as a steel plate, a rubber plate or a plywood, as disclosed in Patent Document 1, for example, in a receiving member such as a paint tray or a tank. The accommodated coating agent is supplied to a coating member such as a coater head / nozzle provided above the conveying path of the material to be coated via a supply mechanism having a pump, a filtering member, and the like, and the coating agent is applied from the coating member. Is applied to the upper surface of the material to be coated that intermittently passes through the conveyance path, and the application of the surplus that has not been applied to the material to be coated is performed via a recovery member positioned below the conveyance path. An application means for recovering the agent and circulating the surplus application agent to the storage member via a recovery mechanism for causing the recovery agent to flow out toward the storage member, and supplying it to the application member again via the supply mechanism. It is known.

  Further, as disclosed in, for example, Japanese Patent Publication No. 6-102323, the configuration of the same kind as the configuration of the known means (however, the publication does not clearly indicate the presence of the filtering member, but the surplus in which foreign matter is mixed) If the coating agent is recirculated to the housing member as it is, foreign matter may clog the discharge port of the coating member and normal application cannot be performed. Therefore, in the invention of this publication, the presence of the filtering member is indispensable. In addition, it is possible to move the adhesive agent between the application member and the recovery mechanism in such a way that the flow-down coating agent is blocked when necessary, so that it can move forward and backward. A coating means that does not apply the coating agent to the surface portion of the material to be coated is also known.

According to the known coating means as described above, the coating agent can be constantly discharged from the coating member to achieve uniform coating, and the remaining coating agent that has not been applied to the material to be coated is recovered. Since it is circulated to the housing member via the mechanism and supplied again to the coating member, there is no waste of coating agent, and even if foreign matter is mixed into the surplus coating agent, a filtering member is interposed in the supply mechanism If this is the case, foreign matter is filtered out, and therefore the material to be coated is a molded body having a relatively clean outer surface, such as a steel plate, and the foreign matter is relatively free from adhesion and adhesion. When there are few materials to be coated, the coating agent can be applied without any particular trouble.
Japanese Examined Patent Publication No. 58-54621 Japanese Examined Patent Publication No. 6-102323

  However, the material to be coated is a molded body with a relatively rough outer surface, such as a veneer veneer, etc., and misplacement or adhesion of foreign matters such as wood powder, wood pieces, and knots (thin fibers, etc.) In the case of a material to be coated (including those that are easily detached when subjected to a slight external force), vibration of the material to be transported, If there is a high probability that foreign matter will be mixed into the surplus coating agent due to the collision of the coating material, overflow of the coating material from the side edge of the material to be coated, etc. Therefore, there is a defect that hinders the rapid flow of the coating agent and causes adverse effects such as insufficient circulation and overflow from the recovery mechanism.

  Thus, in the actual coating process, it is necessary to frequently replace (or wash) the filtering member in order to avoid the occurrence of the above-mentioned adverse effects. As a result, the efficiency of the coating process is increased. It is a bad cause to deteriorate.

  The present invention was developed to eliminate the above-mentioned conventional defects and bad causes. Specifically, as a basic application method, an application agent contained in an application agent storage member is used as a supply mechanism for the application agent. The coating material is supplied to the coating member provided above the conveyance path of the material to be coated, and the coating agent is allowed to flow down from the coating member to be applied to the upper surface of the material to be coated that intermittently passes through the conveyance path. In addition, a recovery member that is positioned below the conveyance path and collects excess coating agent that has not been applied to the material to be coated, and a foreign substance that is mixed in the coating agent that is located in the middle of the flow path of the coating agent are filtered. When a surplus coating agent obtained by filtering foreign matter is circulated to the housing member through a recovery mechanism having a filtering member to be supplied, and supplied to the coating member again through the coating agent supply mechanism, the preceding coated material Immediately after application to the substrate, apply to the subsequent material to be applied. For the period until immediately before starting, the coating agent flowing down is intercepted via the pre-staking member that receives the coating agent flowing down and positioned above the conveyance path of the material to be coated, and directed toward the housing member. The present invention proposes a coating agent coating method (Claim 1) characterized in that the flowing coating agent is caused to circulate directly to the housing member by a flow-off horizontal mechanism.

  Further, as an apparatus used for carrying out the basic method, a conveyance mechanism that forms a conveyance path for a material to be coated, a storage member that accommodates the coating agent, and a coating agent that flows down from above the conveyance mechanism to convey An application member that applies an application agent to the upper surface of the material to be applied that intermittently passes through the path; and a supply mechanism that supplies the application agent accommodated in the accommodation member to the application member. A recovery member that recovers excess coating agent that is positioned and not applied to the material to be applied; and a filtering member that filters foreign matter mixed in the coating agent that is located in the middle of the flow path of the coating agent; A coating agent coating apparatus comprising a recovery mechanism for circulating a surplus coating agent from which foreign matter has been filtered to the housing member, wherein the coating agent is positioned above the conveying path of the material to be coated and flows down when necessary. Place the coating agent that flows down through the pre-receiving side receiving member. At the same time, it is equipped with a pretensioning mechanism for taking out and flowing toward the housing member, and for a period from immediately after application to the preceding material to be applied to immediately before starting application to the subsequent material to be applied, A coating device for coating agent, comprising: a control mechanism for controlling the operation of the preemption mechanism so as to allow the surplus coating agent to flow down to the coating agent containing member directly by the preemption mechanism. Claim 2) is proposed.

  Further, as a more specific aspect of the apparatus proposed in the second aspect of the present invention, there are a horizontal member, a position where the horizontal member faces the coating agent that flows down to the recovery member, and a position that deviates from the coating agent that flows down to the recovery member. 3. A coating agent coating apparatus (Claim 3) using a take-off mechanism having an actuating member for alternately moving back and forth, and fixedly provided at a position deviating from the coating agent flowing down to the recovery member. A change in direction in which the horizontal member is swingably provided with the upper end as a swing center, and the lower end abuts on the coating agent that flows down to the recovery member when necessary, and the flow direction of the coating agent is changed toward the horizontal member. A pretending mechanism having a member and a swinging member that alternately swings the lower end side of the direction changing member back and forth between a position facing the coating agent flowing down to the collecting member and a position coming off from the coating agent flowing down to the collecting member Using The coating agent application device according to claim 2 (Claim 4), a pre-installed member fixedly provided at a position away from the coating agent flowing down to the collecting member, and the coating member flow down to the collecting member. The coating agent coating apparatus (claim 5) according to claim 2, wherein a coating mechanism having a position and an actuating member that is alternately reciprocated between the position and the position of flowing down to the capturing member is used.

  According to the coating method of the coating agent according to the present invention (Claim 1), with respect to the coating agent flowing down to the collecting member, which has a high probability of mixing foreign matter due to the various factors described above, the filtering member ensures the foreign matter. Since filtration is performed, there is no possibility that foreign matter may clog the discharge port of the application member and normal application cannot be performed, even if foreign matter stays and accumulates in the portion of the filtration member. Immediately after the application to the coating material is finished, the coating material that flows down in the period from immediately before the start of the coating to the subsequent coated material without the possibility of foreign matters being mixed is directly stored by the pretending mechanism. As a whole, smooth circulation of the coating agent can be secured over a long period of time, and inconveniences such as insufficient circulation and overflow from the recovery mechanism are eliminated. Of the filtration member Conversion (or cleaning) so frequently is not necessary to carry out, are eliminated together also trouble degrade the efficiency of the coating process.

  Moreover, according to the coating agent coating apparatus (claims 2 to 5) according to the present invention, the coating agent coating method according to the present invention can be carried out smoothly.

  Hereinafter, the present invention will be described in more detail based on an example of the embodiment illustrated in the drawings. For convenience, the same members as those of the embodiment described above are used in the embodiment described later. Are denoted by the same reference numerals, and redundant description may be omitted. In addition, the foreign matter that adheres to the coating material or is mixed into the coating material is not shown, and the flowing coating material is indicated by a plurality of thin dotted lines. The illustration of the coating agent adhering to the surface of another member such as the surface of the member or the surface of the direction changing member is omitted.

  FIG. 1 is a partially cutaway side view of a coating agent application apparatus according to the present invention, and FIG. 2 is an operation explanatory view for explaining the operating state of the coating apparatus illustrated in FIG. In the figure, 1 is a transport mechanism having a transport conveyor 1a composed of a plurality of brazed rolls, a drive source (not shown) composed of various electric motors, etc., and forms a transport path for the material to be coated on the upper surface side. The material to be coated 2 is conveyed intermittently in the direction indicated by the arrow in the figure (the preceding material to be coated and the subsequent material to be coated are discontinuous).

  Reference numeral 3 denotes a funnel-shaped accommodation member that is located below the transport mechanism 1 and accommodates the coating agent 4, and accommodates the surplus coating agent 4 that is recovered via a recovery mechanism 7 and a pre-emption mechanism 8 described later. In addition, a new coating agent 4 replenished from a storage tank (not shown) through the supply pipe 13 is also accommodated.

  Reference numeral 5 denotes a general-purpose coating member positioned above the transport mechanism 1, which has a slit-like discharge port, and causes the coating agent 4 to flow down in a curtain form from above the transport mechanism 1, thereby transporting the mechanism 1. The coating agent 4 is applied to the upper surface of the material to be coated 2 that intermittently passes through the conveyance path.

  6 is a supply mechanism having a supply pump 6a, a connecting pipe 6b for connecting the supply pump 6a and the housing member 3, a 6c for connecting the supply pump 6a and the coating member 5, and the like. The accommodated coating agent 4 is supplied to the coating member 5.

  7 is a recovery mechanism having a bowl-shaped recovery member 7a positioned below the application member 5, a recovery pipe 7b connected to the recovery member 7a, a round bowl-shaped filter member 7c positioned below the recovery pipe 7b, and the like. Then, the surplus coating agent 4 flowing down from the coating member 5 is collected through the collecting member 7a, and foreign matter (not shown) mixed in the coating agent 4 is filtered through the filtering member 7c. The surplus coating agent 4 is caused to flow toward the housing member 3.

  8 is an eaves-like horizontal member 8a provided so as to be able to advance and retreat in the direction of the arrow shown in the figure, a flexible reflux tube 8b connected to the horizontal member 8a, an operating member 8c including a fluid cylinder connected to the horizontal member 8a, etc. And a position where the pre-obtained member 8a, which has obtained the operation of the actuating member 8c based on the control of the control mechanism 9 to be described later, is indicated by a solid line (that is, a position where it is removed from the coating agent flowing down to the collecting member). By alternately advancing and retreating to the position indicated by the dotted line (that is, the position facing the coating agent flowing down to the collecting member), the coating agent 4 flowing down from the coating member 5 is intercepted in a timely manner, and then directly returned to the housing member 3. Let

  Reference numeral 9 denotes a control mechanism, for example, based on a detection signal of a passage detector 10 including a phototube provided above the conveyance path of the material to be coated, immediately before the start of coating on the material to be coated 2. The period until immediately after the application to the material 2 is completed follows the horizontal member 8a of the horizontal mechanism 8 at a position indicated by a solid line, and immediately after the application to the material 2 to be applied is completed. The operation of the operation member 8c is controlled so as to alternately advance and retract to the position indicated by the dotted line during the period immediately before the start of application to the material 2 to be applied.

  Further, in addition to the above control, the control mechanism 9 ensures that the total amount of the coating agent 4 supplied to the coating member 5 is always kept in an amount within a desired range based on the detection signal of the coating agent detector 11. The operation of the supply pump 6a of the supply mechanism 6 is automatically controlled, and the total amount of the coating agent 4 accommodated in the accommodation member 3 is always in a desired range based on the detection signal of the coating agent detector 12. In order to maintain, the operation of related equipment is automatically controlled so as to replenish a new coating agent 4 from a storage tank (not shown) through the supply pipe 13 in a timely manner. It is sufficient to adopt such an automatic control configuration as necessary, and it is possible to achieve an appropriate amount of the coating agent 4 without any special trouble even by manual control based on the visual observation of the worker as has been widely used. Is possible.

  The coating agent coating method according to the present invention can be carried out, for example, using the coating agent coating apparatus configured as described above, and is housed in the coating material housing member 3 as illustrated in FIG. The coating agent 4 is supplied to the coating member 5 provided above the conveyance path of the material to be coated via the coating agent supply mechanism 6, and the coating agent 4 is caused to flow down from the coating member 5, thereby conveying the conveyance path. Is applied to the top surface of the material to be coated 2 that passes intermittently, and is applied to the material to be coated 2 via a recovery mechanism 7 having a recovery member 7a, a filter member 7c, and the like positioned below the transport path. The foreign matter mixed in the remaining excess coating agent 4 is filtered, and the excess coating agent 4 is circulated to the storage member 3 and supplied to the application member 5 again via the coating agent supply mechanism 6. Immediately after the application to the coated material 2 is completed, the subsequent coated material 2 is applied. For the period until immediately before the start of application, as illustrated in FIG. 2, the pre-staking member 8a of the pre-stake mechanism 6 is advanced to the position indicated by the dotted line in FIG. It is directly recirculated to the housing member 3.

  According to such an application method, the foreign material is surely filtered by the filtering member 7c for the coating agent 4 flowing down to the recovery member 7a, which has a high probability of foreign matter mixing due to the various factors described above. Needless to say, there is no possibility of clogging the discharge port of the application member 5 and the normal application cannot be performed, and even if foreign matter stays and accumulates in the portion of the filtration member 7c, the preceding application material 2 is applied. The period from immediately after application of the coating to immediately before the start of application to the subsequent coated material 2 (when the subsequent coated material is interrupted for some time due to replenishment or replacement of the coated material, etc.) Since the coating agent 4 that flows down to the containing member 3 is not allowed to be mixed in by the pretending mechanism 8, the coating agent 4 is directly circulated to the receiving member 3. Can be secured for a long time Thus, inconveniences such as insufficient circulation and overflow from the recovery mechanism 7 are eliminated, and it is not necessary to frequently replace (or wash) the filter member 7c, so that the efficiency of the coating process is deteriorated. The problem to be solved is also solved.

  FIG. 3 is a partially broken side explanatory view of another example of the coating agent application apparatus according to the present invention, and FIG. 4 is an operation explanatory view for explaining the operating state of the coating apparatus illustrated in FIG. is there. In the figure, 14 is provided with a bowl-shaped side-cutting member 14a located at a position deviating from the coating agent 4 flowing down to the collecting member 3, a recirculation pipe 14b connected to the side-cutting member 14a, and swingable around the upper end side as a swing center. The direction change member 14c that has its lower end abutted against the coating agent 4 flowing down to the recovery member 7a when necessary, and changes the flow direction of the coating agent 4 toward the intercept member 14a, and the fluid connected to the direction changing member 14c. A take-off mechanism having an actuating member 14d composed of a cylinder or the like, and the direction changing member 14c that has obtained the action of the actuating member 14d based on the control of the control mechanism 15 described later is a position indicated by a solid line (that is, to the collecting member Application that flows down from the application member 5 by swinging alternately between a position that deviates from the application agent that flows down) and a position indicated by a dotted line (that is, a position that faces the application agent that flows down to the recovery member). 4 timely intercept, to circulate directly in the accommodation member 3.

  15 is a control mechanism, based on the detection signal of the passage detector 10, for the period from immediately before the start of application to the material to be applied 2 until immediately after the application to the material to be applied 2 is completed, About the period from the time when the direction change member 14c of the pretensioning mechanism 14 is applied to the position indicated by the solid line and immediately after the application to the material 2 to be applied immediately before the application to the material 2 to be subsequently applied is started. Controls the operation of the actuating member 14d so as to be alternately swung to the positions indicated by the dotted lines, and the total amount of the coating agent 4 of the coating member 5 and the housing member 3 is always in a desired range. Control the operation of related equipment so that it is maintained.

  The coating agent coating method according to the present invention can be carried out also by the coating agent coating apparatus configured as described above. As illustrated in FIG. 3, the coating agent accommodated in the coating agent accommodating member 3 is used. 4 is supplied to the coating member 5 provided above the conveyance path of the material to be coated via the coating agent supply mechanism 6, and the coating agent 4 is caused to flow down from the coating member 5 to interrupt the conveyance path. Applied to the top surface of the material to be coated 2 passing through, and not applied to the material to be coated 2 via the collection mechanism 7 having the collection member 7a, the filtration member 7c, etc. located below the conveying path. The foreign matter mixed in the surplus coating agent 4 is filtered, and the surplus coating agent 4 is circulated to the storage member 3 and supplied to the coating member 5 again via the coating agent supply mechanism 6. Immediately after the application to the material 2 is completed, the application to the subsequent material 2 is applied. For the period immediately before starting, as shown in FIG. 4, the direction changing member 14c of the pre-staking mechanism 14 is swung to the position shown by the dotted line in FIG. This is directly recirculated to the housing member 3, and can achieve the same effect as the coating apparatus exemplified in FIGS.

  FIG. 5 is a partially broken side explanatory view of still another example of the coating agent coating apparatus according to the present invention, and FIG. 6 is an operational explanatory diagram for explaining the operating state of the coating apparatus illustrated in FIG. It is. In the figure, reference numeral 16 designates a saddle-like horizontal member 16a located at a position deviating from the coating agent 4 flowing down to the recovery member 3, a reflux pipe 16b connected to the horizontal member 16a, and a reciprocating movable in the direction of the arrow in the figure. This is a pretending mechanism having an actuating member 16c composed of a fluid cylinder or the like connected to a general-purpose application member 5 that also serves as a part of the structure of the mechanism. The obtained coating member 5 reciprocates alternately between a position indicated by a solid line (that is, a position where the coating agent flows down to the collecting member) and a position indicated by a dotted line (that is, a position where the coating agent flows down to the pretending member). As a result, the coating agent 4 flowing down from the coating member 5 is intercepted in a timely manner and is directly circulated to the housing member 3.

  17 is a control mechanism, based on the detection signal of the passage detector 10, for the period from immediately before the start of application to the material to be applied 2 until immediately after the application to the material to be applied 2 is completed, Application of the general-purpose application member 5 that also serves as a part of the configuration of the pretensioning mechanism 16 to the position to be applied to the subsequent application target material 2 at the position indicated by the solid line and immediately after the application to the application target application material 2 is completed. In the period until immediately before starting the operation, the operation of the operation member 16c is controlled so as to alternately reciprocate to the position indicated by the dotted line, and the total amount of the coating agent 4 of the application member 5 and the storage member 3 is also determined. , Control the operation of the associated equipment so that it always remains in the desired range of quantities.

  As described above, when the general-purpose application member 5 also serves as a part of the configuration of the pre-staking mechanism 16, a part of the connection pipe 6c is replaced with a flexible connection pipe 6d as shown in the figure. Thus, the application member 5 can be adapted to the reciprocating movement.

  The coating agent coating method according to the present invention can be carried out also by the coating agent coating apparatus configured as described above. As illustrated in FIG. 5, the coating agent accommodated in the coating agent accommodating member 3. 4 is supplied to the coating member 5 provided above the conveyance path of the material to be coated via the coating agent supply mechanism 6, and the coating agent 4 is caused to flow down from the coating member 5 to interrupt the conveyance path. Applied to the top surface of the material to be coated 2 passing through, and not applied to the material to be coated 2 via the collection mechanism 7 having the collection member 7a, the filtration member 7c, etc. located below the conveying path. The foreign matter mixed in the surplus coating agent 4 is filtered, and the surplus coating agent 4 is circulated to the storage member 3 and supplied to the coating member 5 again via the coating agent supply mechanism 6. Immediately after the application to the material 2 is completed, the application to the subsequent material 2 is applied. In the period until immediately before starting, as shown in FIG. 6, the coating member 5 that also serves as a part of the configuration of the pre-emption mechanism 16 is moved to the position indicated by the dotted line in FIG. 5 to flow down. 4 is intercepted and directly recirculated to the housing member 3, and the same effects as those of the coating apparatus illustrated in FIGS. 1 and 2 or FIGS. 3 and 4 can be obtained.

  Each of the coating apparatuses exemplified in the above-mentioned examples has a relatively simple configuration of the pre-emption mechanism and is structurally preferable. However, as the coating apparatus used for carrying out the coating method of the coating agent according to the present invention, The present invention is not limited to a mode provided with a take-off mechanism of the form illustrated in each example. Although the mechanism is slightly complicated, the illustration is omitted in order to speed up the changeover of the take-off, but for example, FIG. 2 is a combination of the horizontal mechanism of the coating apparatus illustrated in FIG. 2 and the horizontal mechanism of the coating apparatus illustrated in FIGS. 3 and 4, or for example, the coating apparatus illustrated in FIGS. Even if it is an aspect provided with a different type of side-off mechanism, such as an aspect comprising a side-off mechanism in which the side-off mechanism is combined with the side-off mechanism of the coating apparatus illustrated in FIGS. In the coating apparatus according to the present invention, As a pre-emption mechanism, the main point is that it is located above the conveyance path of the material to be coated, and the precipitating agent that flows down when necessary is intercepted by the pre-emptive member first, and is collected into the receiving member when necessary Any form that can be flowed out is sufficient.

  Of course, the form of other mechanisms and members is not limited to the form illustrated in each of the above-described examples, and various designs can be changed as necessary. The form is also mentioned.

  First, as the transport mechanism, in addition to the transport conveyor composed of a plurality of brazed rolls exemplified in the above examples, although not shown, for example, a transport conveyor composed of a plurality of cylindrical rolls, etc. As long as it is a form sufficient to form a conveyance path for the material to be coated, such as a belt conveyor formed by stretching the belt, any conventionally known conveyance mechanism can be used.

  Next, as the coating material containing member, the illustration is omitted in addition to the funnel shape illustrated in the above examples, but for example, a pail can shape, a beer barrel shape, a half drum shape, etc. Any known housing member can be used as long as it allows the flow of the coating agent from the outside and accommodates an appropriate amount of the coating agent. If necessary, the lid can be sealed. It can be a formula.

  Next, the application member has a slit-like discharge port exemplified in each of the above examples, and the application agent is allowed to flow down in a curtain shape. A mode in which the coating agent is allowed to flow down into a multi-row thread shape (or thin string shape), or a mode in which the coating agent overflows from the overflow edge on the front side (or back side) of the coating member, for example. In addition, for example, a form in which a foaming liquid coating agent containing foamy air is allowed to flow down, or the like, as long as it is in a form sufficient to cause a suitable amount of the coating agent to flow down on the upper surface of the material to be coated, An application member can be used, and if necessary, it can be sealed with a lid, and there is no problem even if the application agent is pressurized and discharged with an appropriate pressure.

  Next, as the supply mechanism, the form having the supply pump, the connecting pipe and the like illustrated in the above examples is convenient, but there is no particular limitation on the form including the type of the supply pump, and the main point is the housing member. It is sufficient that the coating agent recirculated to the coating member can be supplied to the coating member again, and if necessary, a check valve for preventing backflow, a filtering member for pressing the waste, etc. are provided in the middle of the flow path of the coating agent. It is possible to adopt a configuration in which they are separately interposed. In each of the preceding examples, a new coating agent was replenished to the housing member, and the supply mechanism was supplied to the coating member through the supply mechanism. However, if necessary, only a new coating agent was used. There may be a configuration in which the coating member is directly replenished without using the supply mechanism.

  Next, as the recovery mechanism, the illustration is omitted in addition to the configuration having the bowl-shaped recovery member exemplified in the above examples, the recovery pipe connected to the recovery member, the round filter-shaped filtration member, etc. A configuration in which a flat mesh-like filter member is interposed at the connection portion between the recovery member and the recovery tube, or a mesh bag-like filter member is interposed in the end portion of the recovery tube, etc. An appropriately-shaped recovery member that is positioned below and collects excess coating agent that has not been applied to the material to be applied; and a filtering member that is located in the middle of the flow path of the coating agent and filters foreign matter mixed in the coating agent. It is sufficient to have a configuration in which a surplus coating agent obtained by filtering out foreign substances can be circulated to the housing member.

  As the filter member, any conventionally known filter member may be used as long as it satisfies the requirements for the required filtration performance such as the size of the foreign matter that needs to be filtered and the adaptability to the properties of the coating agent. However, according to the configuration in which the filtration members are provided in two stages as illustrated in the respective examples, the filtration members having different filtration performance such as rough and fine. Can be used in combination, which is convenient for accurately filtering foreign substances of different sizes, and if necessary, it can be configured in three stages or more. There is no problem.

  Next, as a control mechanism, in short, a function for controlling the preemption mechanism to operate during a period from immediately after the application to the preceding material to be applied to immediately before the application to the subsequent material to be started is started. It is sufficient if the control mechanism has at least, and the timing indicated by the term immediately after and immediately after the term does not indicate a very strict moment, as long as it does not hinder the application of the coating agent to the material to be coated. Of course, a corresponding error range is allowed.

  As is apparent from the above, the present invention can effectively improve the coating treatment of the coating agent on the material to be coated, which has a great relation to the foreign matter, as compared with the prior art, and the implementation of the present invention in this field. The effect is enormous.

It is a partially broken side explanatory view of the coating agent coating apparatus according to the present invention. FIG. 3 is an operation explanatory diagram for explaining an operation state of the coating apparatus illustrated in FIG. 1. It is a partially broken side surface explanatory view of a different example of the coating agent coating apparatus according to the present invention. FIG. 4 is an operation explanatory diagram for explaining an operation state of the coating apparatus illustrated in FIG. 3. It is a partially broken side explanatory view of still another example of the coating agent coating apparatus according to the present invention. FIG. 6 is an operation explanatory diagram for explaining an operation state of the coating apparatus illustrated in FIG. 5.

Explanation of symbols

1: transport mechanism 1a: transport conveyor 2: coated material 3: containing member 4: coating agent 5: coating member 6: supply mechanism 7: recovery mechanism 7a: recovery member 7c: filtration members 8, 14, 16: pre-sampling mechanism 8a , 14a, 16a: Intercepting members 8c, 14d, 16c: Actuating members 9, 15, 17: Control mechanism

Claims (5)

  The coating agent stored in the coating agent storage member is supplied to the coating member provided above the conveyance path of the coating material via the coating agent supply mechanism, and the coating agent is caused to flow down from the coating member, A collecting member that is applied to the upper surface of the material to be coated that intermittently passes through the conveyance path, and that is also disposed below the conveyance path and collects excess coating material that has not been applied to the material to be coated, and a coating material A supply mechanism for supplying the coating agent by circulating the excess coating agent that has filtered the foreign matter to the housing member through a recovery mechanism that is located in the middle of the flow path of the filter and filtering the foreign matter mixed in the coating agent. When supplying to the application member again via the, the conveyance path of the application material for a period from immediately after the application to the previous application material is completed to immediately before the application to the subsequent application material is started. The side that receives the coating agent flowing down and positioned above An application agent characterized in that the application agent flowing down is intercepted through the collecting member, and the application agent flowing down is directly recirculated to the accommodation member by a pre-emption mechanism that flows out toward the accommodation member. Application method.   A transport mechanism that forms a transport path for the material to be coated, a housing member that stores the coating agent, and a coating agent that flows down from above the transport mechanism and is applied to the upper surface of the material to be coated that intermittently passes through the transport path. An application member for applying an agent; and a supply mechanism for supplying the application agent accommodated in the housing member to the application member; A collecting member for collecting the agent, and a filtering member for filtering the foreign matter mixed in the coating agent located in the middle of the flow path of the coating agent, and circulating the excess coating agent from which the foreign matter has been filtered to the storage member An apparatus for applying a coating agent comprising a collecting mechanism for causing the coating agent to flow down through a pre-staking member that receives the coating agent that is positioned above the conveying path of the material to be coated and flows down when necessary. Take the side when necessary and let it flow toward the housing member In the period from immediately after the application to the preceding material to be applied to immediately before starting the application to the subsequent material to be coated, surplus coating agent flowing down by the preparatory mechanism is provided. An apparatus for applying a coating agent, comprising: a control mechanism for controlling the preemption mechanism to be operated so as to be circulated directly to a coating material containing member.   A cross-cutting mechanism comprising a horizontal member and an actuating member that alternately moves the horizontal member back and forth between a position facing the coating agent flowing down to the collecting member and a position deviating from the coating agent flowing down to the collecting member. 2. A coating apparatus for coating agent according to 2.   A horizontal member fixedly provided at a position deviating from the coating agent flowing down to the recovery member, and a swingable member having the upper end side as a swing center, and the lower end side comes into contact with the coating agent flowing down to the recovery member when necessary. , A direction changing member that changes the flow direction of the coating agent toward the horizontal member, a position where the lower end side of the direction changing member faces the coating agent that flows down to the collecting member, and a position that deviates from the coating agent that flows down to the collecting member The coating agent coating apparatus according to claim 2, further comprising a swinging mechanism having a swinging member that alternately swings back and forth.   An act of reciprocating alternately between a horizontal member that is fixedly provided at a position deviating from the coating agent that flows down to the recovery member, and a position where the coating agent flows down to the recovery member and a position where the coating agent flows down to the horizontal member 3. The coating agent coating apparatus according to claim 2, wherein a coating mechanism having a member is used.

Images