JP2019042672A - Coating method, method for manufacturing sealant, method for manufacturing assembly, coating device and sealant - Google Patents

Abstract

To inhibit a liquid material extending from a terminal end of a coated liquid material from being coated on a member surface.SOLUTION: A coating method includes: a first step of discharging a hardening liquid material from a nozzle to coat it on a member surface; and a second step of, after stopping discharge at a terminal end of the liquid material coated on the member surface, moving the nozzle above the coated and hardened liquid material, bringing the nozzle close to the liquid material, and then separating the nozzle from the liquid material.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a coating method, a sealing material manufacturing method, an assembly manufacturing method, a coating apparatus, and a sealing material.

  Patent Document 1 discloses a coating method in which a sealant is applied to a joint surface of a member that forms a toner container of an image forming apparatus.

  Patent Document 2 discloses an application method in which a high-viscosity liquid material to be cured is discharged from a nozzle and applied to a member surface. In the coating method of Patent Document 2, after stopping the discharge at the end of the liquid material applied to the surface of the member, it is moved to the start end side of the liquid material while moving the nozzle away from the applied liquid material. The liquid material (hereinafter referred to as “string drawing”) extending from the end of the liquid material to the nozzle is cut.

JP-A-6-277596 JP 2008-161764 A

  After stopping the discharge at the end of the liquid material applied to the surface of the member, it is cut by the method of cutting the string by moving the liquid material to the start end side while separating the nozzle from the applied liquid material. If the stringing does not fall on the applied liquid material, the stringing may be applied to the surface of the member.

  The present invention suppresses the liquid material extending from the end of the applied liquid material from being applied to the surface of the member as compared to the case where the nozzle is moved away from the applied liquid material without bringing the nozzle close to the applied liquid material. The purpose is to do.

  In the first aspect of the invention, the liquid material to be cured is discharged from the nozzle and applied to the member surface, and the discharge is stopped at the end of the liquid material applied to the member surface, and then the applied and cured material is cured. A second step of moving the nozzle onto the liquid material, bringing the nozzle close to the liquid material, and then separating the nozzle from the liquid material.

  In the second step of the invention of claim 2, after stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the liquid material is moved to the liquid material. After contacting the nozzle, the nozzle is separated from the liquid material.

  In the second step of the invention of claim 3, after stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the liquid material is moved to the liquid material. After pressing the nozzle, the nozzle is released from the liquid material.

  In the second step of the invention of claim 4, after stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied cured liquid material, and the applied liquid material The end of the liquid material extending from the end of the nozzle to the nozzle is brought into contact with the applied hardened liquid material, and then the nozzle is separated from the liquid material.

  In the second step of the invention of claim 5, after stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the applied liquid material The end of the liquid material extending from the end of the nozzle to the nozzle is pressed against the coated and hardened liquid material, and then the nozzle is separated from the liquid material.

  In the second step of the invention of claim 6, after stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is separated from the applied liquid material and onto the applied cured liquid material. After moving and bringing the nozzle closer to the liquid material, the nozzle is separated from the liquid material.

  The invention according to claim 7 is a first step in which a liquid material to be cured is discharged from a nozzle and applied to the surface of the member, and after the discharge is stopped at the end of the liquid material applied to the surface of the member, the applied and cured material is cured. The nozzle is moved onto the liquid material, the liquid material extending from the end of the applied liquid material to the nozzle is brought into contact with the applied hardened liquid material, and then the nozzle is separated from the liquid material. And a process.

  In invention of Claim 8, the liquid material which has elasticity after hardening | curing is apply | coated to the said member surface by the application | coating method of any one of Claims 1-7, and a sealing material is manufactured.

  Invention of Claim 9 uses the manufacturing method of the sealing material of Claim 8, and manufactures a sealing material on the member surface of a 1st member, Between said 1st member and a 2nd member. And an assembly step of assembling the first member and the second member in a state where the sealing material is sandwiched between the first member and the second member.

  According to a tenth aspect of the present invention, there is provided a nozzle that discharges and applies a liquid material to be cured to the surface of the member, and a cured liquid that has been applied after the nozzle stops discharging at the end of the liquid material applied to the surface of the member. A moving mechanism for moving the nozzle onto the material, bringing the nozzle close to the liquid material, and then separating the nozzle from the liquid material.

  The invention according to claim 11 is the sealing material in which a portion extending from the end of the sealing material is folded back to the surface on the start end side from the terminal and is pressed against and attached to the surface.

  According to the coating method of claim 1 of the present invention, the liquid material extending from the end of the coated liquid material is compared with the case where the nozzle is not brought close to the coated cured liquid material and separated from the liquid material. Application to the surface of the member can be suppressed.

  According to the coating method of the second aspect of the present invention, the liquid material extending from the end of the coated liquid material is formed on the member surface as compared with the case where the nozzle is not in contact with the coated hardened liquid material. It can suppress applying to.

  According to the coating method of claim 3 of the present invention, the liquid material extending from the end of the applied liquid material is compared with the case where the nozzle contacts the applied hardened liquid material without being pressed. Application to the surface of the member can be suppressed.

  According to the coating method of claim 4 of the present invention, compared to a case where the end portion on the nozzle side of the liquid material extending from the end of the liquid material to the nozzle is not contacted with respect to the applied cured liquid material. The liquid material extending from the end of the applied liquid material can be prevented from being applied to the member surface.

  According to the coating method of claim 5 of the present invention, when the end portion on the nozzle side of the liquid material extending from the end of the liquid material to the nozzle is brought into contact with the applied cured liquid material without being pressed. As compared with the above, it is possible to suppress the liquid material extending from the end of the applied liquid material from being applied to the surface of the member.

  According to the coating method of the sixth aspect of the present invention, compared with the case where the nozzle is brought closer to the applied liquid material without releasing the nozzle, the liquid material extending from the end of the applied liquid material is made thinner before being applied. It can be attached to a cured liquid material.

  According to the coating method of claim 7 of the present invention, compared to the case where the liquid material extending from the end of the liquid material to the nozzle is not in contact with the hardened liquid material that has been applied, the applied liquid material It can suppress that the liquid material extended from the terminal of this is applied to the member surface.

  According to the manufacturing method of claim 8 of the present invention, compared to the case of using the coating method in which the nozzle is not brought close to the coated cured liquid material, or the coated cured liquid material is applied to the coated cured liquid material. As compared with the case where the coating method in which the liquid material extending from the end of the liquid material to the nozzle is non-contact is used, it is possible to suppress the portion extending from the end of the sealing material from adhering to the member surface.

  According to the manufacturing method of claim 9 of the present invention, as compared with the case of using the sealing material manufacturing method using the coating method in which the nozzle is not brought close to the coated hardened liquid material, or away from the liquid material, or Compared to the case of using a sealing material manufacturing method using a coating method in which the liquid material extending from the end of the liquid material to the nozzle is non-contact with respect to the applied cured liquid material, the sealing material is It can suppress protruding from between the 1st member and the 2nd member.

  According to the configuration of the tenth aspect of the present invention, the liquid material extending from the end of the applied liquid material is a member as compared with the configuration in which the nozzle is not brought close to the applied cured liquid material and the nozzle is not brought close to the liquid material. Application to the surface can be suppressed.

  According to the configuration of claim 11 of the present invention, the portion extending from the end of the sealing material is compared with the configuration in which the portion extending from the end of the sealing material is not pressed against the surface of the sealing material. Can be kept attached to the surface of the sealing material.

It is a perspective view which shows schematic structure of the manufacturing apparatus which concerns on this embodiment. It is a perspective view which shows schematic structure of the assembly | attachment body which concerns on this embodiment. It is a figure which shows the application | coating process in the coating method which concerns on this embodiment. It is a figure which shows the separation process of the 1st movement process in the coating method which concerns on this embodiment. It is a figure which shows the nozzle movement process of the 1st movement process in the coating method which concerns on this embodiment. It is a figure which shows the 2nd movement process in the coating method which concerns on this embodiment. It is a figure which shows the 3rd movement process in the coating method which concerns on this embodiment. It is a figure which shows the modification which apply | coats a liquid material in frame shape. It is a figure which shows the separation process of the 1st movement process in the modification shown in FIG. It is a figure which shows the nozzle movement process of the 1st movement process in the modification shown in FIG. It is a figure which shows the 2nd movement process in the modification shown in FIG. It is a figure which shows the 3rd movement process in the modification shown in FIG.

  Below, an example of an embodiment concerning the present invention is described based on a drawing.

<Manufacturing apparatus 10>
A configuration of the manufacturing apparatus 10 according to the present embodiment will be described. FIG. 1 is a schematic diagram illustrating a configuration of a manufacturing apparatus 10 according to the present embodiment.

  As shown in FIG. 1, the manufacturing apparatus 10 (an example of an application apparatus) ejects a liquid material 90 that is cured and applies the liquid material 90 to the application surface 111 (an example of a member surface) of the first member 110 to seal the sealing material 99. (See FIG. 2).

  As shown in FIG. 2, the manufactured sealing material 99 is sandwiched between the first member 110 and the second member 120 and seals between the first member 110 and the second member 120. Specifically, as shown in FIG. 1, the manufacturing apparatus 10 includes a discharge unit 20 and a moving mechanism 80.

  Hereinafter, specific configurations of the first member 110 and the second member 120, the liquid material 90, the discharge unit 20, and the moving mechanism 80 will be described.

(First member 110 and second member 120)
Examples of the first member 110 and the second member 120 shown in FIG. 2 include the following. That is, as the first member 110 and the second member 120, for example, one of the first member 110 and the second member 120 is a container (for example, a toner box or a waste toner box) that stores a developer. The other of the one member 110 and the second member 120 is the lid of the container.

  In addition, as the first member 110 and the second member 120, for example, one of the first member 110 and the second member 120 is a cleaning blade as a removing member that removes the developer attached to the photoreceptor or the like. The other of the one member 110 and the second member 120 is a holder as a support for supporting the cleaning blade. Further, one of the first member 110 and the second member 120 is the holder, and the other of the first member 110 and the second member 120 is an attachment portion to which the holder is attached.

  As described above, examples of the first member 110 and the second member 120 include a pair of members that are assembled via the sealing material 99 that suppresses leakage of powder such as a developer (see FIG. 2). And the 1st member 110 and the 2nd member 120 are assembled | attached with fastening members, such as a screw and a bolt, for example via the sealing material 99, and the assembly 130 is manufactured.

  The first member 110 and the second member 120 may be assembled so as to be separable. Further, the gap sealed by the sealing material 99 between the first member 110 and the second member 120 may be non-uniform.

(Liquid material 90)
The liquid material 90 is a liquid material that has elasticity after curing and changes its shape by an external force. Specifically, as the liquid material 90, for example, a material that is solid at room temperature and becomes liquid at a temperature higher than room temperature (for example, 150 ° C.) and can be applied is used. Examples of the liquid material 90 include styrene elastomers and vinyl acetate elastomers. Note that the higher the molecular weight of the elastomer, the more likely that the liquid material 90 extends from the end of the applied liquid material 90 to the nozzle 24 (described later) of the discharge unit 20 (string drawing).

  The liquid material 90 may be a liquid material composed of two liquids, and a material that is cured by a chemical reaction by mixing the two liquids. In the case of using this liquid material, the liquid material 90 is applied to the application surface 111 of the first member 110 by discharging while mixing the two liquids inside the discharge unit 20. The liquid material 90 applied to the application surface 111 is hardened by a chemical reaction with time.

(Discharge unit 20)
The discharge unit 20 has a function of discharging the liquid material 90 toward the application surface 111 of the first member 110. Specifically, as shown in FIG. 1, the discharge unit 20 includes a container 22 as a storage unit that stores the liquid material 90, a nozzle 24 that discharges the liquid material 90 stored in the container 22, and a nozzle And a control unit 26 that controls the discharge of 24 and the stop of the discharge.

  The control unit 26 is provided in a flow path (not shown) that leads from the container 22 to the nozzle 24 and has an open / close valve (not shown) that opens and closes the flow path. In the control unit 26, the liquid material 90 sent from the container 22 to the nozzle 24 is discharged from the nozzle 24 by opening the on-off valve, and the discharge of the liquid material 90 from the nozzle 24 is stopped by closing the on-off valve. To do.

  When the liquid material 90 that is solid at normal temperature and liquid at high temperature is used, the discharge unit 20 includes a heating unit (not shown) that heats the liquid material 90 accommodated in the container 22. In this configuration, the liquid material 90 that has been heated and heated by the heating unit is discharged from the nozzle 24.

  The nozzle 24 opens downward toward the application surface 111 of the first member 110 to be applied. As a result, the liquid material 90 is discharged downward from the nozzle 24 toward the first member 110 and applied to the application surface 111 of the first member 110.

  Then, the discharge unit 20 is moved in a predetermined movement direction along the application surface 111 of the first member 110 by the movement mechanism 80, so that the liquid material 90 is applied to the application surface 111 in the movement direction. The liquid material 90 applied to the application surface 111 is cured by natural cooling and becomes a sealing material.

  A configuration in which a container for storing the liquid material 90 is provided outside the discharge unit 20 and the liquid material 90 is supplied from the container to the discharge unit 20 by a pump or the like through a supply pipe.

(Movement mechanism 80)
The moving mechanism 80 is a mechanism that moves the discharge unit 20 including the nozzle 24. Specifically, the moving mechanism 80 discharges in a direction along the coating surface 111 of the first member 110, a direction opposite to the direction, a direction away from the coating surface 111, and a direction approaching the coating surface 111. The part 20 is moved.

  More specifically, as shown in FIG. 1, the moving mechanism 80 applies the + X direction, −X direction, + Y direction, and −Y direction along the application surface 111, the + Z direction away from the application surface 111, and the application The ejection unit 20 is moved in the −Z direction approaching the surface 111.

  The −X direction is the reverse direction of the + X direction. The −Y direction is the reverse direction of the + Y direction. The −Z direction is the reverse direction of the + Z direction. The −Y and + Y directions are directions that intersect (specifically, orthogonal) to the −X and + X directions. The −Z and + Z directions are directions intersecting (specifically, orthogonal) to the −Y and + Y directions and the −X and + X directions. Further, the −Z and + Z directions are directions that intersect (specifically, are orthogonal) with respect to the coating surface 111. For example, the + Z direction is upward, and the −Z direction is downward, for example.

  The relative movement speed of the ejection unit 20 with respect to the application surface 111 is preferably, for example, 1 mm / s or more and 100 mm / s or less.

  The moving mechanism 80 may be configured to move the first member 110 with respect to the discharge unit 20. That is, the moving mechanism 80 may be configured to move the ejection unit 20 relative to the application surface 111 of the first member 110.

  As the moving mechanism, for example, a 3-axis robot, a 6-axis robot, an XYZ table, or the like is used. In addition, the structure by which the movement of each direction of the discharge part 20 is performed by a different moving mechanism may be sufficient.

<Method for Manufacturing Assembly 130>
A method for manufacturing the assembly 130 (see FIG. 2) will be described.

  This manufacturing method is a manufacturing method for manufacturing an assembly 130 (see FIG. 2) in which the first member 110 and the second member 120 are assembled. Specifically, the manufacturing method includes a manufacturing process for manufacturing the sealing material 99 using a “sealing material manufacturing method” described later, and an assembly process for assembling the first member 110 and the second member 120. ,have.

  The manufacturing method of a sealing material is a manufacturing method which manufactures the sealing material 99 by apply | coating the liquid material 90 to the application surface 111 of the 1st member 110 with the application method mentioned later. The coating method includes a coating process as an example of a first process and a moving process as an example of a second process.

(Coating process)
In the application step, as shown in FIG. 3, the liquid material 90 is discharged from the nozzle 24 of the discharge unit 20 and applied to the application surface 111 of the first member 110. 3 to 7, only the nozzle 24 is illustrated among the components of the discharge unit 20.

  Specifically, in the coating process, the discharge unit 20 including the nozzle 24 is moved in the + X direction by the moving mechanism 80 (see FIG. 1) while discharging the liquid material 90 from the nozzle 24 of the discharge unit 20. The liquid material 90 is applied linearly along the + X direction on the application surface 111 of the one member 110.

(Transfer process)
The moving process is a process of moving the nozzle 24. The moving process is executed by moving the discharge unit 20 including the nozzle 24 by the moving mechanism 80.

  The moving process is executed after the discharge of the discharge unit 20 is stopped at the end of the liquid material 90 applied to the application surface 111. In the present embodiment, when the discharge of the discharge unit 20 is stopped at the end of the liquid material 90 applied to the application surface 111, the liquid material 90 has a high viscosity. Therefore, as shown in FIG. The liquid material 90 extends from the end of 90 to the nozzle 24. Hereinafter, the liquid material extending from the end of the applied liquid material 90 to the nozzle 24 is referred to as “liquid material 90A”.

  Specifically, the moving process includes a first moving process, a second moving process, and a third moving process.

(First movement process)
The first moving step is a step of moving the nozzle 24 onto the hardened liquid material 90 that has been applied. The first movement process includes a separation process and a nozzle movement process. In the first movement process, as an example, each process is executed in the order of the separation process and the nozzle movement process.

[Separation process]
In the separation step, the nozzle 24 is separated from the applied liquid material 90 as shown in FIG. In other words, in the separation step, the nozzle 24 is separated from the application surface 111. The separation step is executed by moving the discharge unit 20 including the nozzle 24 in the + Z direction by the moving mechanism 80. In addition, “separate” in this specification means “to move away from a state in which the object is touched or a state in which the object is not touched (a separated state)”.

  In the separating step, when the nozzle 24 is separated from the applied liquid material 90, the liquid material 90A is stretched and thinned. Therefore, it can be said that the releasing step is a step of stretching and thinning the liquid material 90A.

  In the separating step, the distance at which the nozzle 24 is separated from the applied liquid material 90 is set in a range where the liquid material 90A is not cut. Therefore, it can be said that the separation step is a step of separating the nozzle 24 from the applied liquid material 90 within a range in which the liquid material 90A is not cut.

[Nozzle movement process]
In the nozzle moving step, as shown in FIG. 5, the nozzle 24 is moved onto the applied hardened liquid material 90. Specifically, the nozzle 24 is moved onto a portion of the applied liquid material 90 that is closer to the start end than the end.

  The nozzle moving step is executed by moving the discharge unit 20 including the nozzle 24 in the −X direction by the moving mechanism 80. That is, in the moving process, the nozzle 24 is moved in the direction opposite to the moving direction of the nozzle 24 in the coating process.

  In the nozzle moving step, the distance for moving the nozzle 24 is set in a range where the liquid material 90A is not cut. Therefore, it can be said that the nozzle moving step is a step of moving the nozzle 24 onto the applied and hardened liquid material 90 within a range where the liquid material 90A is not cut.

  In the nozzle moving step, the distance for moving the nozzle 24 is set to 3 mm or more and 15 mm or less, for example.

  The liquid material 90 applied to the application surface 111 is cured by natural cooling. Therefore, the applied liquid material 90 has been hardened in the portion closer to the start end than the end. Accordingly, the portion of the applied liquid material 90 on the start end side with respect to the end is hardened more than the liquid material 90A. The “applied cured liquid material 90” may be any liquid material 90 that has been cured more than the liquid material 90A.

  In the first movement process, the nozzle movement process is performed after the separation process, but the nozzle movement process may be performed while performing the separation process. That is, in the first moving step, the nozzle 24 may be moved onto the coated and hardened liquid material 90 while separating the nozzle 24 from the coated liquid material 90.

  In the first movement process described above, the separation process is performed. However, depending on the distance between the application surface 111 and the nozzle 24, for example, the nozzle movement process may be performed without performing the separation process.

(Second movement process)
In the second movement process, as shown in FIG. 6, the nozzle 24 is brought close to the applied liquid material 90. In other words, in the second movement step, the nozzle 24 is moved closer to the application surface 111 side from the position of the nozzle 24 after the first movement step.

  In the second movement step, when the nozzle 24 is brought close to the applied liquid material 90, the liquid material 90A comes into contact with the applied liquid material 90. Specifically, at least a part of the liquid material 90A comes into contact with the surface 91 (the upper surface in FIG. 6) of the applied liquid material 90.

  Therefore, it can be said that the second moving step is a step of bringing the liquid material 90 </ b> A into contact with the applied liquid material 90.

  Specifically, in the second moving step, the nozzle 24 is brought close to the applied liquid material 90 and the nozzle 24 is brought into contact with the applied liquid material 90. Specifically, the tip of the nozzle 24 is brought into contact with the surface 91 (upper surface in FIG. 6) of the applied liquid material 90.

  When the nozzle 24 is brought into contact with the applied liquid material 90 in the second movement step, the end of the liquid material 90A on the nozzle 24 side comes into contact with the applied liquid material 90. Specifically, the end of the liquid material 90 </ b> A on the nozzle 24 side contacts the surface 91 of the applied liquid material 90. The end of the liquid material 90A on the nozzle 24 side is an end including the portion of the liquid material 90A attached to the tip surface of the nozzle 24.

  Therefore, it can be said that the second moving step is a step of bringing the end of the liquid material 90 </ b> A on the nozzle 24 side into contact with the applied liquid material 90.

  More specifically, in the second moving step, the nozzle 24 is brought close to the applied liquid material 90 and the nozzle 24 is pressed against the applied liquid material 90. Specifically, the tip of the nozzle 24 is pressed against the surface 91 of the applied liquid material 90. That is, the tip of the nozzle 24 is moved to the application surface 111 side from the surface 91 of the applied liquid material 90. Thereby, the surface 91 of the applied liquid material 90 is recessed by the nozzle 24.

  In the second movement step, when the nozzle 24 is pressed against the applied liquid material 90, the end of the liquid material 90A on the nozzle 24 side is pressed against the applied liquid material 90. Specifically, the end of the liquid material 90 </ b> A on the nozzle 24 side is pressed against the surface 91 of the applied liquid material 90. That is, the end of the liquid material 90 </ b> A on the nozzle 24 side is moved from the surface 91 of the applied liquid material 90 to the application surface 111 side.

  Therefore, it can be said that the second moving step is a step of pressing the end of the liquid material 90 </ b> A on the nozzle 24 side against the applied liquid material 90.

  The surface 91 of the applied liquid material 90 is the surface of the applied liquid material 90 on the nozzle 24 side. That is, the surface 91 is a surface opposite to the application surface 111.

  The second moving step is executed by moving the discharge unit 20 including the nozzle 24 in the −Z direction by the moving mechanism 80. In the second movement step, the time for pressing the nozzle 24 against the coated liquid material 90 is set to, for example, not less than 0.5 seconds and not more than 5 seconds.

(Third movement process)
In the third movement step, as shown in FIG. 7, the nozzle 24 is separated from the applied liquid material 90. In other words, in the third movement step, the nozzle 24 is separated from the application surface 111. The third movement process is executed by moving the ejection unit 20 including the nozzle 24 in the + Z direction by the movement mechanism 80.

  In the third movement step, the liquid material 90 </ b> A is separated from the nozzle 24 by separating the nozzle 24 from the applied liquid material 90. Therefore, it can be said that the third movement step is a step of separating the liquid material 90 </ b> A from the nozzle 24.

(Method for producing sealing material)
In the manufacturing method of the sealing material, the liquid material 90 is cured by naturally cooling the first member 110 to which the liquid material 90 has been applied by the above-described application method, for example, in an ambient temperature. Note that forced cooling may be performed by blowing air. The sealing material 99 is manufactured by curing the liquid material 90.

  By being manufactured by the sealing material manufacturing method described above, the portion extending from the end of the sealing material 99 (the portion that was the liquid material 90A) is folded back to the surface 91 on the start end side from the end, and the surface The sealing material 99 pressed against 91 is manufactured.

  In addition, since the nozzle trace of the nozzle 24 remains in the manufactured sealing material 99, it is the manufacturing result that the part which extended from the termination | terminus of the sealing material 99 was pressed and adhered to the surface 91. From the material 99

(Manufacturing process and assembling process in the manufacturing method of the assembly 130)
In the manufacturing process in the manufacturing method of the assembly 130, the sealing material 99 is manufactured using the above-described manufacturing method of the sealing material.

  In the assembly process, as shown in FIG. 2, the first member 110 and the second member 120 are assembled with the sealing material 99 sandwiched between the first member 110 and the second member 120. Thereby, the assembly 130 is manufactured. The first member 110 and the second member 120 are assembled by, for example, fastening the first member 110 and the second member 120 with fastening members such as screws and bolts.

<Operation of this embodiment>
In the coating method of the present embodiment, as described above, after the discharge of the discharge unit 20 is stopped at the end of the liquid material 90 applied to the application surface 111, the nozzle 24 is already applied as shown in FIG. It moves on the hardened liquid material 90 (1st movement process). Then, as shown in FIG. 6, the nozzle 24 is pressed against the applied liquid material 90 (second movement step). That is, the end of the liquid material 90A on the nozzle 24 side is pressed against the applied liquid material 90. As a result, the end of the liquid material 90 </ b> A on the nozzle 24 side adheres to the applied liquid material 90.

  Thereafter, as shown in FIG. 7, the nozzle 24 is separated from the applied liquid material 90 (third movement step). Thereby, the liquid material 90A is cut in a state where the end of the liquid material 90A on the nozzle 24 side adheres to the applied liquid material 90. In particular, in this embodiment, since the end of the liquid material 90A on the nozzle 24 side is pressed against the applied liquid material 90, the end of the liquid material 90A on the nozzle 24 side is fixed to the applied liquid material 90. The

  Therefore, according to the coating method of the present embodiment, the liquid material 90A hangs down in the −Y direction or the + Y direction as compared with the case where the nozzle 24 contacts the applied hardened liquid material 90 without being pressed. (See FIG. 1), application to the application surface 111 is suppressed.

  Further, according to the coating method of the present embodiment, the liquid material 90A is less than the case where the liquid material 90A comes into contact with the hardened liquid material 90 that has been applied without being pressed against the end of the liquid material 90A on the nozzle 24 side. Application to the application surface 111 is suppressed by dripping in the Y direction or the + Y direction (see FIG. 1).

  As a result, compared with the case of using the coating method (the coating method of the comparative example) in which the nozzle 24 is not pressed against the coated hardened liquid material 90, it extends from the end of the manufactured sealing material 99. It is possible to suppress the adhered portion from adhering to the application surface 111.

  Thereby, compared with the case where the manufacturing method of the sealing material which apply | coats the liquid material 90 with the application | coating method of a comparative example and manufactures the sealing material 99 is used, the sealing material 99 is the 1st member 110, the 2nd member 120, and Protruding from between is suppressed.

  In the coating method of the present embodiment, in the first moving step, the nozzle 24 is separated from the coated liquid material 90 (separating step), and the nozzle 24 is moved onto the coated hardened liquid material 90 ( Nozzle movement process).

  Thereby, compared with the case where the nozzle 24 is brought close to the coated liquid material 90 without releasing it, the liquid material 90A can be made thinner and then adhered to the coated cured liquid material 90. For this reason, the thickness of the portion where the liquid material 90A is superimposed on the hardened liquid material 90 that has been applied is less likely to be thicker than the other portions.

<First variation of coating method>
In the above-described coating method, the nozzle 24 is pressed against the coated liquid material 90 as shown in FIG. 6 in the second movement step. The second moving step is not limited to this, and for example, the nozzle 24 may be brought into contact with the applied hardened liquid material 90 without being pressed.

  Specifically, in this configuration, the tip of the nozzle 24 is brought into contact with the surface 91 (upper surface in FIG. 6) of the applied liquid material 90 without being pressed. That is, the nozzle 24 is moved so that the tip of the nozzle 24 is at the same height as the surface 91 of the applied liquid material 90.

  Also in this configuration, the end of the liquid material 90A on the nozzle 24 side is pressed against the applied liquid material 90. By pressing the end of the liquid material 90A on the nozzle 24 side against the applied hardened liquid material 90, the end of the liquid material 90A on the nozzle 24 side adheres to the applied liquid material 90.

  Thereafter, by separating the nozzle 24 from the applied liquid material 90 (third movement step), the end of the liquid material 90A on the nozzle 24 side adheres to the applied liquid material 90, and the liquid material 90A Disconnected.

  Therefore, according to the coating method, the liquid material 90A hangs down in the −Y direction or the + Y direction as compared with the case where the nozzle 24 is not in contact with the hardened liquid material 90 that has been applied (see FIG. 1). ), The application to the application surface 111 is suppressed.

<Second modification of coating method>
In the coating method described above, in the second moving step, as shown in FIG. 6, the end of the liquid material 90 </ b> A on the nozzle 24 side is pressed against the coated liquid material 90. The second moving step is not limited to this. For example, the end of the liquid material 90A on the nozzle 24 side may be brought into contact with the applied hardened liquid material 90 without being pressed.

  Specifically, in this configuration, the end of the liquid material 90A on the nozzle 24 side is brought into contact with the surface 91 (upper surface in FIG. 6) of the applied liquid material 90 without being pressed. That is, the end of the liquid material 90A on the nozzle 24 side is moved so that the end of the liquid material 90A on the nozzle 24 side is at the same height as the surface 91 of the applied liquid material 90.

  The end of the liquid material 90A on the nozzle 24 side comes into contact with the applied hardened liquid material 90, so that the end of the liquid material 90A on the nozzle 24 side adheres to the applied liquid material 90.

  Thereafter, by separating the nozzle 24 from the applied liquid material 90 (third movement step), the end of the liquid material 90A on the nozzle 24 side adheres to the applied liquid material 90, and the liquid material 90A Disconnected.

  Therefore, according to the coating method, the liquid material 90A is in the −Y direction or the + Y direction compared to the case where the end of the liquid material 90A on the nozzle 24 side is not in contact with the hardened liquid material 90 that has been applied. Application to the application surface 111 is suppressed by dripping or the like (see FIG. 1).

<Third modification of coating method>
Furthermore, as the second moving step, for example, the nozzle 24 may be brought close to the applied hardened liquid material 90 without being brought into contact therewith. That is, at least a part of the liquid material 90A may be brought into contact with the applied hardened liquid material 90.

  In this way, at least a part of the liquid material 90A is attached to the applied liquid material 90 by bringing at least a part of the liquid material 90A into contact with the applied hardened liquid material 90.

  Thereafter, by separating the nozzle 24 from the applied liquid material 90 (third movement step), the liquid material 90A is cut in a state where at least a part of the liquid material 90A is attached to the applied liquid material 90.

  Therefore, according to the coating method, the liquid material 90A hangs down in the −Y direction or the + Y direction as compared with the case where the nozzle 24 is moved away from the coated liquid material 90 without approaching the coated liquid material 90 (see FIG. 1), application to the application surface 111 is suppressed.

  Further, according to the coating method, the liquid material 90A hangs down in the −Y direction or the + Y direction with respect to the applied cured liquid material 90 as compared to the case where at least a part of the liquid material 90A is not in contact. Thus, application to the application surface 111 is suppressed (see FIG. 1).

<Fourth modification of coating method>
As an application method, the liquid material 90 may be applied so that the start end portion and the end end portion are connected. As such an application method, as shown in FIG. 8, the liquid material 90 is applied in a frame shape to the application surface 111 of the first member 110 so that the start end portion 90S and the end portion 90F of the liquid material 90 are connected. There is a case. In this case, the liquid material 90 is applied by moving the ejection unit 20 including the nozzle 24 by the moving mechanism 80 in the order of, for example, + X direction, + Y direction, −X direction, −Y direction, and + X direction.

  In this coating method, in the first movement step, as shown in FIG. 9, after the nozzle 24 is separated from the coated liquid material 90 (separation step), as shown in FIG. The nozzle 24 is moved onto the starting end portion 90S at 90 (nozzle moving step). 9 to 12, only the nozzle 24 is illustrated among the components of the discharge unit 20.

  The nozzle moving step is executed by moving the discharge unit 20 including the nozzle 24 in the X direction by the moving mechanism 80. That is, in the moving process, the nozzle 24 is not moved in the reverse direction (see FIG. 5), but is moved in the same direction as the moving direction of the nozzle 24 in the coating process. This nozzle movement process is executed in the same manner as the nozzle movement process shown in FIG. 5 except that the nozzle 24 is moved in the same direction as the movement direction of the nozzle 24 in the coating process.

  Thereafter, as shown in FIG. 11, the nozzle 24 is brought close to the applied liquid material 90 (second movement step). This 2nd movement process is performed similarly to the 2nd movement process shown by FIG.

  Then, as shown in FIG. 12, the nozzle 24 is separated from the applied liquid material 90 (third movement step). The third movement process is executed in the same manner as the third movement process shown in FIG.

  The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention. For example, the modification examples described above may be appropriately combined.

<Example>
EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples.

Example 1
In Example 1, in the manufacturing apparatus 10 described above, the container 22 of the discharge unit 20 contains a liquid material 90 made of a styrene elastomer having a melt viscosity of 20 Pa · s at 150 ° C., and is heated by a heating unit (not shown). The container 22 is heated to 150 ° C.

  The liquid material 90 is discharged from the nozzle 24 of the discharge unit 20 at a discharge amount of 0.2 g / s. The distance between the tip of the nozzle 24 and the application surface 111 is set to 2 mm, and the discharge unit 20 including the nozzle 24 is moved in the X direction so that the liquid material 90 discharged from the nozzle 24 is applied to the application surface 111 of the first member 110. Apply (application process). The height of the liquid material 90 is 1.5 mm.

  After applying the liquid material 90 to a length of 250 mm, the discharge was stopped at the end of the liquid material 90. Next, the nozzle 24 was moved in the + Z direction so that the distance between the coating surface 111 and the tip of the nozzle 24 was 10 mm (the first moving step separation step). As a result, the liquid material 90 extended from the end of the applied liquid material 90 to the nozzle 24.

  Thereafter, the nozzle 24 was moved 10 mm in the −X direction (nozzle movement step of the first movement step). Then, the nozzle 24 was moved in the −Z direction to come into contact with the applied cured liquid material 90 (second moving step).

  In this state, after leaving for 2 seconds, the nozzle 24 was moved in the + Z direction (third movement step), and the coating operation was completed. As a result, the portion extending from the end of the manufactured sealing material 99 adhered to the upper surface on the start end side of the sealing material 99 and did not adhere to the coating surface 111. In addition, the moving speed of the nozzle 24 in this application | coating operation was made into the speed of 50 mm / s.

(Example 2)
In Example 2, in the second moving step, the nozzle 24 was brought close to the applied cured liquid material 90 in a non-contact state. At this time, the distance between the tip of the nozzle 24 and the coating surface 111 is 2 mm.

  Also in Example 2, the portion extending from the end of the manufactured sealing material 99 adhered to the upper surface on the start end side of the sealing material 99 and did not adhere to the coating surface 111.

(Comparative Example 1)
In Comparative Example 1, in the first movement process, the nozzle 24 is moved in the + Z direction (separation process) so that the distance between the coating surface 111 and the tip of the nozzle 24 is 30 mm, and the nozzle 24 is further moved to −X. It was moved 50 mm in the direction (nozzle moving step).

  As a result, the liquid material 90A extending from the terminal end of the applied liquid material 90 to the nozzle 24 was cut, dropped from the terminal end of the sealing material 99 in the Y direction, and adhered to the application surface 111.

  And when the sealing material 99 is inserted | pinched between the 1st member 110 and the 2nd member 120, and the 1st member 110 and the 2nd member 120 are assembled | attached, from between the 1st member 110 and the 2nd member 120 The defect which the sealing material 99 protrudes occurred. The protruding sealing material 99 was in contact with the film packaging the assembly 130, and became an obstacle when removing the film.

DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus (an example of an applicator), 24 nozzle, 80 moving mechanism, 90 liquid material, 99 sealing material, 110 1st member, 111 coating surface (an example of member surface), 120 2nd member, 130 assembly

Claims (11)

A first step in which a liquid material to be cured is discharged from a nozzle and applied to the surface of the member;
After stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, the nozzle is brought close to the liquid material, and then the nozzle is removed from the liquid material. A second step of releasing,
A coating method comprising: In the second step,
After stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied cured liquid material, and the nozzle is brought into contact with the liquid material. The coating method according to claim 1, wherein the nozzle is separated. In the second step,
After stopping discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied cured liquid material, and the nozzle is pressed against the liquid material, and then the nozzle is removed from the liquid material. The coating method according to claim 2. In the second step,
After stopping discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the liquid material extended from the end of the applied liquid material to the nozzle The coating method according to claim 1, wherein after the nozzle-side end portion is brought into contact with the applied cured liquid material, the nozzle is separated from the liquid material. In the second step,
After stopping discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the liquid material extended from the end of the applied liquid material to the nozzle The coating method according to claim 4, wherein the nozzle is separated from the liquid material after the nozzle side end is pressed against the coated liquid material. In the second step,
After stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved away from the applied liquid material and moved onto the applied hardened liquid material to bring the nozzle closer to the liquid material. The coating method according to claim 1, wherein the nozzle is separated from the liquid material. A first step in which a liquid material to be cured is discharged from a nozzle and applied to the surface of the member;
After stopping the discharge at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the applied hardened liquid material, and the liquid material extending from the end of the applied liquid material to the nozzle is removed. A second step of separating the nozzle from the liquid material after contacting the applied cured liquid material;
A coating method comprising: The manufacturing method of the sealing material which manufactures the sealing material by apply | coating the said liquid material which has elasticity after hardening to the said member surface by the application | coating method of any one of Claims 1-7. Using the method for producing a sealing material according to claim 8, a step of producing a sealing material on the member surface of the first member;
An assembly step of assembling the first member and the second member in a state where the sealing material is sandwiched between the first member and the second member;
The manufacturing method of the assembly which has this. A nozzle for discharging a liquid material to be cured and applying it to the surface of the member;
After the nozzle stops discharging at the end of the liquid material applied to the surface of the member, the nozzle is moved onto the hardened liquid material that has been applied, the nozzle is brought close to the liquid material, and then the liquid material A moving mechanism for separating the nozzle from
A coating apparatus comprising:   A sealing material in which a portion extending from the end of the sealing material is folded back to the surface on the start end side from the terminal and is pressed and attached to the surface.