Coating method and coating system using varying speed

A coating method for coating a body of an automotive vehicle being conveyed with a coating gun arranged so as to reciprocate in a first direction which is a vertical direction of said body, said body being conveyed in a direction of conveyance longitudinal of the body to be coated, comprising:

• coating the side of said body by altering a reciprocating stroke of said coating gun in accordance with a length of the member extending in said first direction;
• wherein said coating gun is so disposed as to reciprocate in said first direction and as to be movable back and forth in said direction of conveyance;
• wherein said body is conveyed in the direction of conveyance;
• a coating region of said member to be coated is divided into plural sections or blocks in the reciprocating direction of said coating gun and in said direction of conveyance;
• and
• said reciprocating stroke of said coating gun is variable by means of varying its reciprocating track or locus in accordance with a radius of curvature for each of said plural sections or blocks;
• said coating gun being positioned for first coating said forward lower section of said body;
• said coating gun starts coating said forward lower section;
• said coating gun is moved to position said coating gun for coating said upper section of said body;
• said coating gun then starts coating said upper section of the body;
• said coating gun is moved to position said coating gun for coating said rearward lower section of said body;
• and
• said coating gun then starts coating said rearward lower section of the body.

A coating method for coating a body of an automotive vehicle being conveyed with a coating gun arranged so as to reciprocate in a first direction which is a vertical direction of said body, said body being conveyed in a direction of conveyance longitudinal of the body to be coated, comprising:

• coating the side of said body by altering a reciprocating stroke of said coating gun in accordance with a length of the member extending in said first direction;
• wherein said coating gun is so disposed as to reciprocate in said first direction and as to be movable back and forth in said direction of conveyance;
• a coating region of said member to be coated is divided into plural sections or blocks in the reciprocating direction of said coating gun and in said direction of conveyance;
• and
• said reciprocating stroke of said coating gun is variable by means of varying its reciprocating track or locus in accordance with a radius of curvature for each of said plural sections or blocks;
• and wherein one coating section or block out of said plural sections or blocks contains a pillar section located at an upper portion of said body;
• and
• said pillar section is coated while moving said coating gun along and parallel to said pillar section in such a state that a length of said reciprocating stroke of said coating gun is set in accordance with a vertical length of said pillar section.

A coating method for coating a body of an automotive vehicle being conveyed with a coating gun arranged so as to reciprocate in a first direction which is a vertical direction of said body, said body being conveyed in a direction of conveyance longitudinal of the body to be coated, comprising:

• coating the side of said body by altering a reciprocating stroke of said coating gun in accordance with a length of the member extending in said first direction;
• wherein said coating gun is so disposed as to reciprocate in said first direction and as to be movable back and forth in said direction of conveyance;
• a coating region of said member to be coated is divided into plural sections or blocks in the reciprocating direction of said coating gun and in said direction of conveyance;
• and
• said reciprocating stroke of said coating gun is variable by means of varying its reciprocating track or locus in accordance with a radius curvature for each of said plural sections or blocks;
• wherein said coating gun is moved along a shape of said body in a manner different from reciprocating movement in at least a portion of said plural sections or blocks.

A coating method for coating a member being conveyed with a coating gun arranged so as to reciprocate in a first direction different from a direction of conveyance of the member to be coated, comprising:

• coating said member by altering a reciprocating stroke of said coating gun in accordance with a length of the member extending in said first direction;
• wherein said coating gun is so disposed as to reciprocate in said first direction and as to be movable back and forth in said direction of conveyance;
• said coating gun coats said member at a varying speed in the direction of conveyance of the member, said speed varying in accordance with a length of said member in said first direction;
• and
• the speed of said coating gun is altered so as to make a pass pitch of a coat pattern constant.

A coating system comprising:

• a main body of a coating apparatus disposed so as to be movable back and forth in a direction of conveyance of a member to be coated;
• a coating gun mounted to said main body so as to reciprocate in a first direction different from said direction of conveyance;
• and
• control means for controlling a reciprocating stroke of said coating gun and a speed of moving said main body back and forth so as to be variable in accordance with a length of said member in said first direction.

A coating system comprising:

• a main body of a coating apparatus disposed so as to be movable back and forth in a direction of conveyance of a member to be coated;
• a coating gun mounted to said main body so as to reciprocate in a first direction different from said direction of conveyance;
• and
• first control means for controlling a reciprocating track or locus of said coating gun so as to be variable in accordance with each of sections or blocks divided from a total coating region of said member at least in said first direction;
• and
• second control means for controlling said coating gun so as to be transferrable from one coating section or block to another.

A coating system comprising:

• a main body of a coating apparatus disposed so as to be movable back and forth in a direction of conveyance of a member to be coated;
• a coating gun mounted to said main body so as to reciprocate in a first direction different from said direction of conveyance and to be movable along a shape of a said of said member to be coated;
• first control means for controlling a reciprocating track or locus of said coating gun so as to be variable in accordance with each of sections or blocks divided from a total coating region of said member at least in said first direction;
• and
• second control means for controlling said coating gun so as to be transferrable from one coating section or block to another.