Laser and infrared heating device

An infrared heating device, comprising:

• a pair of infrared irradiators arranged in parallel along a longitudinal direction and irradiating infrared rays to an object to be heated to heat the object to be heated;
• a holding member arranged between the pair of the infrared irradiators, the pair of the infrared irradiators being held by the holding member at respective opposite ends of the holding member;
• a noncontact thermometer that is provided at a center of the holding member and measures temperature of a surface of the object to be heated;
• a first pair of laser beam irradiators that irradiate laser beams to the surface of the object to be heated;
• and
• a pair of first support plates that support the first pair of laser beam irradiators, respectively,
• wherein the first pair of laser beam irradiators are attached, through the first support plates, to both outermost ends of the holding member in a direction parallel to the longitudinal direction, respectively, with the noncontact thermometer as a center, so as to be arranged in symmetry with each other about a plane passing through a measurement direction of the noncontact thermometer and orthogonal to the longitudinal direction,
• wherein the first pair of the laser beam irradiators is configured such that one of the laser beam irradiators forming the first pair of laser beam irradiators irradiates laser beams to the surface of the object to be heated from a position which is different than a position from which the other of the laser beam irradiators forming the first pair of laser beam irradiators irradiates laser beams,
• the infrared heating device further comprising a second pair of laser beam irradiators attached to the pair of the infrared irradiators through a pair of second support plates, respectively,
• wherein the second pair of laser beam irradiators and the second support plates are arranged
• at both outermost ends of the pair of infrared irradiators, the outermost ends being farthest from each other with respect to the pair of infrared irradiators in a direction perpendicular to the longitudinal direction, or
• at both innermost ends of the pair of infrared irradiators, the innermost ends being closest each other with respect to the pair of infrared irradiators in the direction perpendicular to the longitudinal direction,
• wherein the second support plates support the second pair of laser beam irradiators, respectively, such that respective support angles of the second pair of laser beam irradiators are adjustable,
• wherein the predetermined distance between the surface of the object to be heated and the pair of infrared irradiators can be changed by changing the support angles of the second pair of laser beam irradiators, and
• wherein the first and second pairs of the laser beam irradiators are disposed to cause the laser beams from the first pair of the laser beam irradiators to be coincident in position with one another at a first point on the surface of the object to be heated and to cause laser beams from the second pair of the laser beam irradiators to be coincident in position with one another at a second point on the surface of the object to be heated, wherein the first point and the second point are different points when the distance is the predetermined distance.

An infrared heating device, comprising:

• a pair of infrared irradiators arranged in parallel along a longitudinal direction and irradiating infrared rays to an object to be heated to heat the object to be heated;
• a holding member arranged between the pair of the infrared irradiators, the pair of the infrared irradiators being held by the holding member at respective opposite ends of the holding member;
• a noncontact thermometer that is provided at a center of the holding member and measures temperature of a surface of the object to be heated;
• a first pair of laser beam irradiators that irradiate laser beams to the surface of the object to be heated;
• and
• a pair of first support plates that support the first pair of laser beam irradiators, respectively,
• wherein the first pair of laser beam irradiators are attached, through the first support plates, to both outermost ends of the holding member in a direction parallel to the longitudinal direction, respectively, with the noncontact thermometer as a center, so as to be arranged in symmetry with each other about a plane passing through a measurement direction of the noncontact thermometer and orthogonal to the longitudinal direction,
• wherein the first pair of the laser beam irradiators is configured such that one of the laser beam irradiators forming the first pair of laser beam irradiators irradiates laser beams to the surface of the object to be heated from a position which is different than a position from which the other of the laser beam irradiators forming the first pair of laser beam irradiators irradiates laser beams,
• the infrared heating device further comprising a second pair of laser beam irradiators attached to the holding member through a pair of second support plates, respectively,
• wherein the second pair of laser beam irradiators are attached, through the second support plates, to both outermost ends of the holding member in a direction parallel to the longitudinal direction, respectively, with the noncontact thermometer as a center, so as to be arranged in symmetry with each other about a plane passing through the measurement direction of the noncontact thermometer and orthogonal to the longitudinal direction,
• wherein the second support plates adjustably support the second pair of laser beam irradiators, respectively, such that respective support angles of the second pair of the laser beam irradiators are adjustable,
• wherein the predetermined distance between the surface of the object to be heated and the pair of infrared irradiators can be changed by changing the support angles of the second pair of the laser beam irradiators, and
• wherein the first and second pairs of the laser beam irradiators are disposed to cause the laser beams from the first pair of the laser beam irradiators to be coincident in position with one another at a first point on the surface of the object to be heated and to cause laser beams from the second pair of the laser beam irradiators to be coincident in position with one another at a second point on the surface of the object to be heated, wherein the first point and the second point are different points when the distance is the predetermined distance.