JP2016133723A - Manufacturing method of heating member, and manufacturing device of heating member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent adhesive from being extruded or come off at the foot part of a convex surface, the adhesive applied to the convex surface whose cross section in a main body is curved into an arc shape.SOLUTION: A manufacturing method includes a process of applying adhesive so that on a convex surface that is formed in a main body extending in one direction and whose cross section in a vertical direction to the one direction is curved into an arc shape, a plurality of pieces of linear adhesive in the one direction is arranged with intervals from the apex side of the convex surface to a foot part side. The adhesive has processes of: making a thickness at the apex thicker than that at the foot part and an interval at the apex wider than that at the foot part; and compressing a coil on the convex surface to which the adhesive is applied.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a heating member manufacturing method and a heating member manufacturing apparatus.

  Patent Document 1 includes a coil bobbin disposed along the axial direction of the heat generating rotating body and an excitation coil formed by winding a conductive wire and adhered to the coil holding surface of the coil bobbin with an adhesive. An induction heating unit is disclosed in which the agent has elasticity in a solidified state and is partially applied to a predetermined region of the coil holding surface.

JP 2012-118391 A

  In a configuration in which the coil is bonded to the convex surface that is formed on the bobbin as the main body and the cross-section is curved in an arc shape, if the adhesive is applied in a large amount, the adhesive will protrude from the convex surface It may stick out. Further, in the above-described configuration, if the amount of the adhesive applied is small, the adhesive may be removed from the convex surface (a portion where no adhesive is applied) may occur.

  Compared to the case where the thickness of the adhesive is the same at the top and the flange of the convex surface whose cross section of the main body is curved in an arc shape, and the distance between the adhesives is the same at the top and the flange. An object of the present invention is to suppress the protrusion and detachment of the convex surface of the adhesive applied to the convex surface.

  The invention according to claim 1 is a convex surface formed in a main body extending in one direction and having a cross section perpendicular to the one direction curved in an arc shape, and a linear adhesive along the one direction is formed on the convex surface. The adhesive is applied in such a manner that a plurality of adhesives are arranged at intervals from the top side to the buttock side, and the adhesive is thinner at the buttock than the top and the gap is The step is narrower at the flange than the top, and the step of pressing the coil on the convex surface coated with the adhesive.

  In the invention of claim 2, in the step of applying the adhesive, the adhesive is applied so as to circulate on the convex surface.

  In the step of applying the adhesive in the invention of claim 3, the adhesive is applied with a single stroke.

  The invention according to claim 4 is a convex surface formed in a main body extending in one direction and having a cross section perpendicular to the one direction curved in an arc shape, and a linear adhesive along the one direction is the convex surface. An application device that applies an adhesive so that a plurality of the adhesives are arranged at intervals from the top to the heel, wherein the adhesive is thinner at the heel than the top, and the interval is at the top. An application device that is narrower than the collar, and a pressurizing device that presses the coil against the convex surface to which the adhesive is applied.

  In the invention of claim 5, the coating device applies the adhesive so as to circulate on the convex surface.

  In the invention of claim 6, the coating device applies the adhesive by one stroke.

  According to the manufacturing method of the first aspect of the present invention, the thickness of the adhesive is the same between the top and the flange of the convex surface whose cross section in the main body is curved in an arc shape, and the distance between the adhesives is the top and the flange. Compared with the case where it is the same for each part, it is possible to suppress the protrusion and detachment of the adhesive applied to the convex surface at the collar part of the convex surface.

  According to the manufacturing method of Claim 2 of this invention, compared with the case where an adhesive agent is apply | coated only to the linear form along one direction, the range which can be apply | coated by one application | coating operation | movement is wide.

  According to the manufacturing method of Claim 3 of this invention, an adhesive agent can be apply | coated by one application | coating operation | movement.

  According to the manufacturing apparatus of the fourth aspect of the present invention, the thickness of the adhesive is the same between the top and the flange of the convex surface whose cross section in the main body is curved in an arc shape, and the distance between the adhesives is the top and the flange. Compared with the case where it is the same for each part, it is possible to suppress the protrusion and detachment of the adhesive applied to the convex surface at the collar part of the convex surface.

  According to the manufacturing apparatus of claim 5 of the present invention, compared to the case where the adhesive is applied only in a line along one direction, the range that can be applied by one application operation is wide.

  According to the manufacturing apparatus of the sixth aspect of the present invention, the adhesive can be applied by a single application operation.

It is a front sectional view showing a fixing device to which an induction heating device is applied. It is a sectional side view which shows an induction heating apparatus. It is a perspective view which shows a coating device. It is a figure which shows the application pattern of the adhesive agent by a coating device. It is a perspective view which shows a pressurization apparatus. It is an operation | movement figure which shows the pressurization operation | movement by a pressurization apparatus. It is a figure which shows the 1st modification of the application pattern shown in FIG. It is a figure which shows the 2nd modification of the application pattern shown in FIG.

  An example of an embodiment according to the present invention will be described with reference to the drawings. Hereinafter, a fixing device to which an induction heating device (an example of a heating member) is applied will be described first. Next, an induction heating device manufacturing apparatus and an induction heating device manufacturing method will be described. In addition, the X direction, -X direction, Y direction, and -Y direction used in the following description are the arrow directions shown in the figure.

(Fixing device 200)
A fixing device 200 shown in FIG. 1 is used, for example, in an electrophotographic image forming apparatus. As shown in FIG. 1, the fixing device 200 includes an endless fixing belt 202 having a heat generating layer (not shown), a pressure roll 204, and an induction heating device 100. In the fixing device 200, the induction heating device 100 heats the heat generating layer of the fixing belt 202. In the fixing device 200, the toner image T transferred to the recording medium P is fixed to the recording medium P by the heat of the fixing belt 202 heated by the induction heating device 100 and the pressurization by the pressure roll 204. . Specifically, the fixing device 200 is configured as follows.

  Inside the fixing belt 202, prismatic pillars 214 made of aluminum which is a nonmagnetic material are arranged. The support post 214 has a length in the width direction of the fixing belt 202 (the front-rear direction of the paper surface in FIG. 1). Both ends in the length direction of the column 214 are fixed to the apparatus main body 201 (frame) of the fixing apparatus 200. A pad 216 whose lower surface is in contact with the inner peripheral surface of the fixing belt 202 is fixed to the lower portion of the column 214.

  A substantially semi-cylindrical heating element 118, which will be described later, is provided above the support post 214 inside the fixing belt 202. The heating element 118 is supported by a pair of support members 222 fixed to the support column 214.

  The fixing belt 202 is supported so as to be rotatable in the direction of arrow D by a support post 214, a pad 216, a pair of support members 222, and a heating element 118 disposed inside the fixing belt 202.

  The pressure roll 204 presses the fixing belt 202 toward the pad 216, and a nip portion N that sandwiches the recording medium P is formed between the pressure roller 204 and the fixing belt 202. The pressure roll 204 is rotated in the direction of arrow E by a motor (not shown). The fixing belt 202 rotates in the arrow D direction following the rotation of the pressure roll 204.

<Induction heating apparatus 100>
The induction heating device 100 (an example of a heating member) includes a bobbin 120 (an example of a main body), an induction heating coil 110 (an example of a coil), and a magnetic path forming member 112.

  The bobbin 120 is disposed along the outer peripheral surface of the fixing belt 202 at a position facing the outer peripheral surface of the fixing belt 202. The bobbin 120 is made of an insulating material (for example, a resin material).

  The bobbin 120 extends in the width direction (an example of one direction) of the fixing belt 202, and has a length in the width direction of the fixing belt 202. The bobbin 120 is formed in a substantially arc shape that follows the outer peripheral surface of the fixing belt 202, and a cross section in a direction perpendicular to the length direction of the bobbin 120 (the front-rear direction of the drawing in FIG. 1) is curved in an arc shape. It has a shaped surface 122.

  At the top portion 122A of the convex surface 122, a convex portion 125 projects toward the side opposite to the fixing belt 202 (the upper side in FIG. 1). Note that the convex portion 125 has a rectangular shape having a long side in the width direction of the fixing belt 202 in a plan view (viewed from the upper side in FIG. 1). Each of the flange portions 122B of the convex surface 122 is formed with a protruding portion 127 that protrudes on the opposite side (left and right sides in FIG. 1) from the fixing belt 202. Note that the surface of the bobbin 120 opposite to the convex surface 122 is a concave surface 124 whose cross section in the direction perpendicular to the length direction of the bobbin 120 is curved in an arc.

  The induction heating coil 110 is fixed to the convex surface 122 with an adhesive while being arranged so as to be wound around the convex portion 125 a plurality of times. The induction heating coil 110 has a function of generating a magnetic field H by energization.

  The magnetic path forming member 112 is disposed at a position opposite to the induction heating coil 110 on the side opposite to the fixing belt 202 (upper side in FIG. 1). The magnetic path forming member 112 is made of a magnetic material such as ferrite formed in a substantially arc shape following the arc shape of the bobbin 120. The magnetic path forming member 112 is attached to the convex portion 125 of the bobbin 120 at the center in the circumferential direction, and is attached to the overhanging portion 127 of the bobbin 120 at both ends in the circumferential direction.

  As shown in FIG. 2, a plurality of magnetic path forming members 112 are arranged along the width direction of the fixing belt 202, and the magnetic path forming member 112 is formed of a nonmagnetic material provided along the width direction of the fixing belt 202. It is held by the member 113. Note that the magnetic path forming members 112 are arranged at equal intervals in the central portion in the length direction of the holding member 113, and are arranged at close intervals or in contact at both ends in the length direction. By arranging the magnetic path forming member 112 in this way, the distribution of the magnetic field H in the width direction of the fixing belt 202 is adjusted.

  The heat generating layer of the fixing belt 202 and the heat generator 118 are made of a metal material that generates heat by an electromagnetic induction effect in which an eddy current flows so as to generate a magnetic field that cancels the magnetic field H described above. The heating element 118 is arranged so that the surface (convex surface) is in contact with the inner surface of the fixing belt 202.

  In the induction heating apparatus 100, when an alternating current is supplied to the induction heating coil 110, the magnetic field H as a magnetic circuit is repeatedly generated and extinguished around the induction heating coil 110. When the magnetic field H crosses the heat generating layer of the fixing belt 202, an eddy current is generated in the heat generating layer so as to generate a magnetic field that prevents the magnetic field H from changing. The heat generating layer generates heat in proportion to the skin resistance of the heat generating layer and the magnitude of eddy current flowing through the heat generating layer, whereby the fixing belt 202 is heated.

  Similarly, due to the electromagnetic induction effect of the magnetic field H, the heating element 118 generates heat and the fixing belt 202 is heated. As described above, in the induction heating device 100, the fixing belt 202 is heated by causing the heat generating layer of the fixing belt 202 and the heating element 118 to generate heat with the induction heating coil 110.

(Manufacturing apparatus 10)
The manufacturing apparatus 10 includes a coating device 20 (see FIG. 3) that applies an adhesive to the convex surface 122 of the bobbin 120, and a pressurizing device 70 that pressurizes the induction heating coil 110 to the convex surface 122 to which the adhesive is applied. (See FIG. 5).

<Coating device 20>
As shown in FIG. 3, the coating apparatus 20 includes a dispenser 22 as a discharge unit that discharges an adhesive, and a moving mechanism 30 that moves the bobbin 120 relative to the dispenser 22.

  The dispenser 22 is supported by a support member 24 fixed to an apparatus main body (frame) (not shown) of the coating apparatus 20. The dispenser 22 linearly discharges the adhesive from the nozzle 22A to a predetermined discharge position on the convex surface 122 at a fixed position. A controller 90 that controls driving of the dispenser 22 is connected to the dispenser 22.

  In the present embodiment, the control unit 90 controls only driving and stopping of the dispenser 22. The dispenser 22 is driven by the controller 90 to discharge the adhesive with a predetermined fixed discharge amount (discharge amount per unit time).

  The moving mechanism 30 includes a support body 40 that supports the bobbin 120, a rotating device 50 that rotates the support body 40, and a linear motion device 60 that linearly moves the support body 40.

  The support 40 includes a plate 42 having a length in the X direction and a thickness in the vertical direction, and a support member 44 provided at both ends in the length direction of the upper surface of the plate 42 and supporting both ends in the length direction of the bobbin 120. ,have.

  The rotating device 50 includes rotating members 52 and 53 fixed to both ends in the length direction of the lower surface of the plate 42, a driving unit 54 having a driving shaft 56 fixed to the rotating member 52, and a rotating member via the rotating shaft 57. And a support portion 55 that rotatably supports 53.

  The drive unit 54 is a rotating member 52, 53 within a range in which one flange 122B to the other flange 122B of the convex surface 122 of the bobbin 120 supported by the support body 40 are positioned at the discharge position of the dispenser 22. Rotate.

  A controller 90 that controls the driving of the drive unit 54 is connected to the drive unit 54. In the present embodiment, the control unit 90 controls the drive and drive stop of the drive unit 54, and also drives the rotation members 52 and 53 by the drive unit 54 (rotation amount), drive direction (forward or reverse), and drive. Control the speed (rotational speed).

  The linear motion device 60 includes a base 62 on which the rotation device 50 is placed, a support part 64 that supports the base 62 so as to be movable in the X direction, and a drive part 68 that linearly moves the base 62.

  The base 62 is formed in a plate shape having a length in the X direction and a thickness in the vertical direction. The driving unit 54 of the rotating device 50 is fixed to one end of the upper surface of the table 62 in the length direction, and the supporting unit 55 of the rotating device 50 is fixed to the other end of the upper surface of the table 62 in the length direction.

  The support portion 64 supports the bottom portion of the table 62 so as to be movable in the X direction and the −X direction by rails (not shown) extending in the X direction. The drive unit 68 moves the table 62 linearly in the X direction and the −X direction. A control unit 90 that controls the driving of the driving unit 68 is connected to the driving unit 68. In the present embodiment, the control unit 90 controls driving and stopping of the driving unit 68, and controls the driving amount (linear movement amount) and driving speed (linear movement speed) of the table 62 by the driving unit 68.

  In the coating device 20, the dispenser 22 discharges the adhesive 14 to the bobbin 120 at a fixed position, and the bobbin 120 is moved by the rotating device 50 and the linear motion device 60, as shown in FIG. The adhesive 14 is applied to the convex surface 122.

  In addition, the application pattern of the adhesive 14 shown in FIG. 4 shows the application pattern in a state where the convex surface 122 of the bobbin 120 is developed in a planar shape. Further, in the bobbin 120 shown in FIG. 4, the overhanging portion 127 is not shown. The specific adhesive application operation by the application device 20 will be described in the manufacturing method described later of the induction heating device 100.

<Pressurizing device 70>
As shown in FIG. 5, the pressurizing device 70 includes an arrangement table 72 on which the induction heating coil 110 is arranged, and a pressing member 76 that pushes the bobbin 120 toward the induction heating coil 110.

  An upper surface of the placement table 72 is a placement surface 72A on which the induction heating coil 110 is placed. The arrangement surface 72A is a concave surface that is curved in an arc shape.

  An opening 71 is formed in the placement surface 72A. The opening 71 is provided with a projecting portion 73 projecting upward from the placement surface 72 </ b> A so as to be movable up and down on the placement base 72. Specifically, the projecting portion 73 is attached to the placement table 72 so as to be movable between a projecting position projecting upward from the placement surface 72A and a retracted position retracted into the opening 71. The protruding portion 73 is pushed upward by an elastic member 75 (see FIG. 6) such as a compression spring, and is positioned at the protruding position under no load.

  In the pressurizing device 70, the induction heating coil 110 is arranged with respect to the arrangement surface 72A so that the protrusion 73 is positioned in the hollow portion 110A formed at the center of the induction heating coil 110. Further, the bobbin 120 is arranged on the induction heating coil 110 arranged on the arrangement surface 72 </ b> A so that the convex part 125 faces (contacts) the protruding part 73.

  The lower surface of the pressing member 76 is a convex surface 76 </ b> A along the concave surface 124 of the bobbin 120. The pushing member 76 is lowered by a lowering mechanism (not shown), pushes the bobbin 120 to the induction heating coil 110 arranged on the arrangement surface 72A, and adds the induction heating coil 110 to the convex surface 122 coated with the adhesive. Press.

(Method for manufacturing induction heating apparatus 100)
This manufacturing method includes an application step of applying an adhesive to the convex surface 122 of the bobbin 120 and a pressurizing step of pressing the induction heating coil 110 onto the convex surface 122 to which the adhesive is applied. .

<Application process>
In the coating step, the coating apparatus 20 applies the adhesive 14 so as to go around the convex portion 125 on the convex surface 122 as shown in FIG. Specifically, in the coating process, the driving of the dispenser 22, the rotation device 50, and the linear motion device 60 of the coating device 20 is controlled by the control unit 90. For example, as described below, the dispenser 22, the rotation device 50, and the linear motion device 60 are controlled. The moving device 60 operates.

  First, the portion of the convex surface 122 of the bobbin 120 on the Y direction side with respect to the convex portion 125 and the portion on the −X direction side with respect to the convex portion 125, closer to the top portion 122A than the flange portion 122B of the convex surface 122. With the portion 123 (see FIG. 4) positioned at the discharge position of the dispenser 22, the discharge of the adhesive 14 from the dispenser 22 is started. In FIG. 4, the application start end portion of the adhesive 14 is indicated by reference numeral 14A.

  When the dispenser 22 starts to discharge the adhesive 14 onto the bobbin 120, the linear motion device 60 moves the bobbin 120 in the -X direction. Thereby, the linear adhesive agent 14B along the length direction (X direction) of the bobbin 120 is apply | coated.

  When the adhesive 14B reaches a predetermined length, the linear motion device 60 stops the movement of the bobbin 120 in the -X direction, and then the rotation device 50 rotates (forward rotation) the bobbin 120 in the Y direction. . Thereby, the linear adhesive 14 </ b> C along the short direction (−Y direction) of the bobbin 120 is applied.

  Further, when the adhesive 14C reaches a predetermined length, the rotation device 50 stops the rotation (forward rotation) of the bobbin 120 in the Y direction, and the linear motion device 60 moves the bobbin 120 in the X direction. Thereby, the linear adhesive 14 </ b> D along the length direction (−X direction) of the bobbin 120 is applied.

  Further, when the adhesive 14D reaches a predetermined length, the linear motion device 60 stops the movement of the bobbin 120 in the X direction, and then the rotation device 50 rotates (reverses) the bobbin 120 in the -Y direction. Let When the adhesive 14E reaches a predetermined length, the rotating device 50 stops the rotation (reverse rotation) of the bobbin 120 in the -Y direction. Thereby, the linear adhesive agent 14E along the short direction (Y direction) of the bobbin 120 is apply | coated. As described above, the linear adhesives 14 </ b> B, 14 </ b> C, 14 </ b> D, and 14 </ b> E are applied to the convex surface 122, whereby the first round of the adhesive 14 is applied around the convex portion 125.

  Subsequent to the first round adhesive 14, as described above, the coating device 20 is operated, so that the second round, the third round, the fourth round, and the fifth round adhesive 14 around the convex portion 125. Apply. In this manner, the adhesive 14 is applied in a single stroke by swirling so that the inner peripheral end 14A of the adhesive 14 becomes the application start end.

  At this time, in order to prevent the adhesive 14 from crossing in each round, the adhesive 14 of the previous round (for example, the first round) is spaced apart and the next round (for example, the second round). Adhesive 14 is applied.

  Thereby, a plurality of linear adhesives 14B, 14G, 14D, and 14H along the length direction (X direction) of the bobbin 120 are arranged at intervals from the top portion 122A side of the convex surface 122 to the flange portion 122B side. The

  Further, by controlling the amount of linear motion of the bobbin 120 by the linear motion device 60 and the amount of rotation of the bobbin 120 by the rotation device 50, the distance between the first round adhesive 14 and the second round adhesive 14 is the widest. The interval is gradually narrowed every time the second, third, fourth and fifth laps are circulated.

  Therefore, the distance between the linear adhesives 14B, 14G, 14D, and 14H along the length direction (X direction) of the bobbin 120 is narrower at the flange portion 122B than at the top portion 122A of the convex surface 122.

  Further, the linear motion speed of the bobbin 120 by the linear motion device 60 and the rotational speed of the bobbin 120 by the rotation device 50 are greater in the coating operation of the adhesive 14 in the second round than in the coating operation of the adhesive 14 in the first round. It is faster and gradually increases with each lap of the second, third, fourth and fifth laps. As a result, the thickness of the adhesive 14 is the largest in the first round, and gradually decreases with each round of the second, third, fourth, and fifth rounds. In the present embodiment, the thickness of the adhesive 14 is compared with the cross-sectional area of the adhesive 14, and the thickness of the adhesive 14 is large when the cross-sectional area of the adhesive 14 is wide.

  Therefore, the thickness of the linear adhesives 14B, 14G, 14D, and 14H along the length direction (X direction) of the bobbin 120 is thinner at the flange portion 122B than the top portion 122A of the convex surface 122.

<Pressurization process>
In the pressurizing step, as shown in FIGS. 5 and 6A and 6B, induction heating is performed such that the protrusion 73 is positioned in the hollow portion 110A formed at the center of the induction heating coil 110. The coil 110 is arranged on the arrangement surface 72A. Next, as shown in FIG. 6C, the bobbin 120 is arranged on the induction heating coil 110 arranged on the arrangement surface 72 </ b> A so that the convex part 125 faces (contacts) the protruding part 73. .

  Next, as shown in FIG. 6D, the concave surface 124 of the bobbin 120 is pushed to the induction heating coil 110 by the pushing member 76. As a result, the protrusion 73 is pushed by the protrusion 125 and retreats to the retreat position in the opening 71, and the induction heating coil 110 is pressed against the convex surface 122 coated with the adhesive 14. 6C and 6D, illustration of the overhanging portion 127 of the bobbin 120 is omitted.

  In this way, the induction heating coil 110 is pressed against the convex surface 122 to which the adhesive 14 is applied, whereby the induction heating coil 110 is bonded to the convex surface 122 of the bobbin 120.

  And the induction heating apparatus 100 is manufactured by attaching the magnetic path formation member 112 to the bobbin 120 (refer FIG. 1).

(Operation according to this embodiment)
In the present embodiment, the thickness of the linear adhesives 14 </ b> B, 14 </ b> G, 14 </ b> D, 14 </ b> H along the length direction (X direction) of the bobbin 120 is narrower at the flange portion 122 </ b> B than the top portion 122 </ b> A of the convex surface 122. For this reason, when the induction heating coil 110 is pressed against the convex surface 122 of the bobbin 120 and the adhesives 14B, 14G, 14D, 14H are spread out, the adhesives 14B, 14G, 14D, 14H It is harder to spread at the flange 122B than at 122A.

  Therefore, in this embodiment, the adhesives 14B, 14G, 14D, and 14H are bonded to the convex surface 122 as compared with the case where the thicknesses of the top portion 122A and the flange portion 122B of the convex surface 122 are the same. It is difficult for the agent 14 to protrude from the overhanging portion 127 by the flange portion 122B.

  As described above, since the protrusion of the adhesive 14 to the overhanging portion 127 is suppressed, the magnetic path forming member 112 is displaced with respect to the bobbin 120 by the adhesive 14 that protrudes into the overhanging portion 127 and solidifies. The attachment to the overhanging portion 127 is suppressed. Further, in order to prevent the magnetic path forming member 112 from being attached to the overhanging portion 127 in a misaligned state, the protruding adhesive 14 is removed from the bobbin 120 before the magnetic path forming member 112 is attached to the bobbin 120. Work is also unnecessary.

  In the present embodiment, the distance between the adhesives 14B, 14G, 14D, and 14H is narrower at the flange 122B than at the top 122A of the convex surface 122. For this reason, the area of the portion where the adhesive 14 is not applied is smaller at the flange portion 122B than at the top portion 122A. Therefore, even if the thickness of the adhesive 14 is thin at the flange 122B and it is difficult to spread when the adhesive 14 is pressurized, the adhesive 14 is removed at the flange 122B of the convex surface 122 (the adhesive is applied). The formation of a portion that is not performed) is suppressed.

  That is, in the present embodiment, the adhesive 14B, 14G, 14D, and 14H are bonded to the convex surface 122 as compared with the case where the distance between the top portion 122A and the flange portion 122B of the convex surface 122 is the same. The agent 14 is prevented from coming off at the flange 122B. As described above, the adhesive 14 applied to the convex surface 122 is suppressed from coming off at the flange portion 122B, so that poor adhesion of the induction heating coil 110 to the convex surface 122 is suppressed.

  In this embodiment, the adhesive 14 is circulated around the convex portion 125 of the bobbin 120, and the adhesive 14 is applied to the convex surface 122 with a single stroke.

  For this reason, the adhesive 14 is applied by one application operation in the application apparatus 20. In other words, the dispenser 22 can be driven and stopped only once in the coating apparatus 20.

(First modification)
The adhesive 14 may be applied as shown in FIG. In the application pattern shown in FIG. 7, the adhesive 14 is applied in a frame shape for each turn. Also in the coating pattern shown in FIG. 7, by controlling the linear movement amount of the bobbin 120 by the linear motion device 60 and the rotation amount of the bobbin 120 by the rotation device 50, the first round adhesive 14 and the second round adhesive are controlled. 14 is the widest, and the intervals are gradually narrowed every time the second, third, fourth, and fifth turns.

  Accordingly, the distance between the linear adhesives 14B, 14G, 14D, and 14H along the length direction (X direction) of the bobbin 120 is narrower at the flange portion 122B than at the top portion 122A of the convex surface 122.

  Further, the linear motion speed of the bobbin 120 by the linear motion device 60 and the rotational speed of the bobbin 120 by the rotation device 50 are greater in the coating operation of the adhesive 14 in the second round than in the coating operation of the adhesive 14 in the first round. It is faster and gradually increases with each lap of the second, third, fourth and fifth laps. As a result, the thickness of the adhesive 14 is the largest in the first round, and gradually decreases with each round of the second, third, fourth, and fifth rounds. Therefore, the thickness of the linear adhesives 14B, 14G, 14D, and 14H along the length direction (X direction) of the bobbin 120 is thinner at the flange portion 122B than the top portion 122A of the convex surface 122.

  As described above, in the first modification, the adhesive 14 is circulated around the convex portion 125 of the bobbin 120 and the adhesive 14 is applied to the convex surface 122. For this reason, compared with the case where it apply | coats only with the linear adhesive agent along one direction, the range apply | coated by one application | coating operation | movement in the coating device 20 becomes wide. Therefore, the number of times of controlling the driving and stopping of the dispenser 22 in the coating device 20 is reduced as compared with the case where the coating is performed only with the linear adhesive along one direction.

(Second modification)
The adhesive 14 may be applied as shown in FIG. In the coating pattern shown in FIG. 8, it is formed only by the linear adhesive 14 along the length direction (X direction) of the bobbin 120.

  Also in the coating pattern shown in FIG. 8, by controlling the amount of rotation of the bobbin 120 by the rotating device 50, the interval between the linear adhesives 14 is made narrower at the flange 122 </ b> B than the top 122 </ b> A of the convex surface 122. The

  Further, by controlling the linear motion speed of the bobbin 120 by the linear motion device 60, the thickness of the linear adhesive 14 is thinner at the flange portion 122 </ b> B than the top portion 122 </ b> A of the convex surface 122.

(Other variations)
In this embodiment, the induction heating device 100 applied to the fixing device 200 has been described. However, the present invention is not limited to this, and the induction heating device 100 may be applied to other devices.

  In this embodiment, the dispenser 22 discharges the adhesive 14 to the bobbin 120 at a fixed position, and the bobbin 120 is moved by the rotating device 50 and the linear motion device 60, whereby the adhesive is applied to the convex surface 122 of the bobbin 120. However, the present invention is not limited to this. For example, instead of or in addition to moving the bobbin 120, the dispenser 22 may be moved to apply the adhesive 14 to the convex surface 122.

  In this embodiment, the thickness of the adhesive 14 is changed by controlling the linear motion speed of the bobbin 120 by the linear motion device 60 and the rotational speed of the bobbin 120 by the rotation device 50. Not limited. For example, the thickness of the adhesive may be changed by changing the discharge amount from the dispenser 22 instead of or in addition to the control of the linear motion speed and the rotation speed of the bobbin 120.

  Also, as the application pattern of the adhesive 14, the application pattern of the present embodiment (pattern shown in FIG. 4), the application pattern of the first modification (pattern shown in FIG. 7), and the application pattern of the second modification ( It is not limited to the pattern shown in FIG. The application pattern of the adhesive 14 may be, for example, an application pattern in which the adhesive 14 is applied in a zigzag manner. Even in the case of a zigzag application pattern, the adhesive 14 can be applied with a single stroke.

  In the present embodiment, the adhesive 14 is spirally wound and applied from the inner peripheral side to the outer peripheral side. However, the present invention is not limited to this, and the adhesive 14 is directed from the outer peripheral side to the inner peripheral side. You may make it wrap around in a spiral form and apply | coat.

  In the present embodiment, even in the linear adhesives 14 (including the adhesives 14C and 14E) along the Y direction that are arranged in plural on the −X direction side and the X direction side with respect to the convex portion 125, The interval is gradually narrowed every time it goes around to the outer peripheral side, but is not limited to this configuration. For the linear adhesives 14 along the Y direction that are arranged on the −X direction side and the X direction side with respect to the convex portion 125, the distance between the adhesives 14 may be the same, or the outer circumference side may be circulated. You may gradually widen as you do.

  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.

DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus 14 Adhesive 20 Application | coating apparatus 70 Pressurizing apparatus 100 Induction heating apparatus (an example of a heating member)
110 Induction heating coil (an example of a coil)
120 bobbins (an example of the main body)
122 convex surface 122A top 122B collar

Claims (6)

A convex surface formed in a main body extending in one direction and having a cross section perpendicular to the one direction curved in an arc shape, and a linear adhesive along the one direction from the top side of the convex surface to the buttock side A step of applying an adhesive such that a plurality of the adhesives are arranged at a distance from each other, wherein the adhesive is thinner at the collar than at the top and the gap is at the collar at the collar more than the top. The narrow process;
Pressing the coil onto the convex surface coated with the adhesive;
The manufacturing method of the heating member which has this.   The method for manufacturing a heating member according to claim 1, wherein in the step of applying the adhesive, the adhesive is applied so as to circulate on the convex surface.   The manufacturing method of the heating member according to claim 1 or 2, wherein in the step of applying the adhesive, the adhesive is applied with a single stroke. A convex surface formed in a main body extending in one direction and having a cross section perpendicular to the one direction curved in an arc shape, and a linear adhesive along the one direction is spaced from the top of the convex surface to the heel portion A coating apparatus that applies an adhesive so that a plurality of the adhesives are arranged with a gap between each other, wherein the adhesive is thinner at the butt than the top and the interval is narrower at the butt than the top A coating device;
A pressurizing device for pressurizing the coil onto the convex surface coated with the adhesive;
An apparatus for manufacturing a heating member.   The said coating apparatus is a manufacturing apparatus of the heating member of Claim 4 which apply | coats the said adhesive so that it may circulate on the said convex surface.   The said coating apparatus is a manufacturing apparatus of the heating member of Claim 4 or 5 which apply | coats the said adhesive agent with one stroke drawing.