JP2009241428A - Printing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing apparatus capable of achieving improvement of inspection and maintenance workability of both of a printing unit and a solder supply part even in constitution where the printing unit and the solder supply part are arranged in a predetermined printing direction and integrally moved. <P>SOLUTION: The printing apparatus 100 is equipped with a mask 300 on the lower surface of which a printed board 200 is arranged and which has an aperture of a predetermined pattern, a syringe 721 which supplies a solder onto the mask 300, and a squeegee unit 71 which prints the solder on the printed board 200 through the mask 300 by moving in the predetermined printing direction (Y direction). The syringe 721 and the squeegee unit 71 are constituted to integrally move in the printing direction, and the syringe 721 is constituted to move to a predetermined retreat position Q from a printing position P where they are arranged along in the printing direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a printing apparatus, and more particularly, to a printing apparatus including a solder supply unit that supplies solder and a printing unit that prints a predetermined pattern of solder on a substrate via a mask.

  2. Description of the Related Art Conventionally, a printing apparatus including a solder supply unit that supplies solder and a printing unit that prints a predetermined pattern of solder on a substrate via a mask is known (see, for example, Patent Document 1).

  In the above-mentioned Patent Document 1, a printing unit that reciprocates in a predetermined printing direction on a mask having a lower surface in contact with a substrate and having a predetermined pattern opening, and is arranged alongside the printing unit along the moving direction of the printing unit. In addition, a printing apparatus including a solder supply unit that supplies a solder paste onto a mask is disclosed. The printing apparatus according to Patent Document 1 reciprocates the printing unit in the printing direction with a squeegee (a spatula member) attached to the printing unit in contact with the upper surface of the mask to which the solder paste is supplied from the solder supply unit. By doing so, a solder pattern is printed on the substrate. In Patent Document 1, it is not specified whether the solder supply unit moves in the printing direction integrally with the printing unit.

JP 2004-58299 A

  However, since the printing unit and the solder supply unit are arranged side by side in the printing direction in the printing apparatus of Patent Document 1, when an operator performs inspection and maintenance work on the printing apparatus from the printing unit side, The solder supply unit is located on the back side across the printing unit. For this reason, there exists a problem that workability | operativity of the inspection and maintenance work of a solder supply part worsens. On the other hand, when the operator performs inspection and maintenance work on the solder supply unit from the solder supply unit side, the printing unit is located on the back side across the solder supply unit. There is a problem that the workability of the system becomes worse. Also, in the above Patent Document 1, when the solder supply unit is configured to move in the printing direction integrally with the printing unit, the workability during the inspection and maintenance work of the solder supply unit or the printing unit is the same as described above. It is thought that the problem that becomes worse occurs.

  The present invention has been made to solve the above-described problems. One object of the present invention is to arrange a printing unit and a solder supply unit side by side in a predetermined printing direction, and to integrate them. It is another object of the present invention to provide a printing apparatus capable of improving the inspection and maintenance workability of both the printing unit and the solder supply unit even in the configuration of moving to the position.

Means for Solving the Problems and Effects of the Invention

  In order to achieve the above object, a printing apparatus according to an aspect of the present invention includes a mask having a substrate disposed on a lower surface and having a predetermined pattern of an opening, a solder supply unit for supplying solder onto the mask, A printing unit that prints a predetermined pattern of solder on the substrate through the mask by moving in a predetermined printing direction with the spatula member in contact with the supplied mask; and a solder supply unit. The printing unit is configured to move integrally along the printing direction, and at least one of the solder supply unit and the printing unit is located at a predetermined retracted position from the printing position aligned along the printing direction. It is configured to be movable.

  In the printing apparatus according to the one aspect, as described above, at least one of the solder supply unit and the printing unit is configured to be movable from a printing position aligned along the printing direction to a predetermined retraction position. Even in a configuration in which the solder supply unit and the printing unit are arranged along the printing direction and move integrally, it is possible to move at least one of the solder supply unit and the printing unit to the retracted position. For this reason, during inspection or maintenance work, the solder supply unit and the printing unit arranged along the printing direction are integrally moved to the vicinity of the work position where the operator is located, and the solder supply unit and the printing unit are If the front side of the operator is moved to the retracted position, the operator can easily perform inspection and maintenance work on the back side. Thereby, inspection and maintenance workability of both the printing unit and the solder supply unit can be improved.

  In the printing apparatus according to the above aspect, the printing apparatus preferably further includes an arm member that supports the solder supply unit, and the solder supply unit moves from the printing position to the retracted position as the arm member rotates. It is configured as follows. If comprised in this way, a solder supply part can be easily moved to a retracted position only by rotating the arm member which supports a solder supply part at the time of an inspection and a maintenance work.

  In this case, preferably, the position where the spatula member of the printing unit is arranged in the solder supply unit and the arm member is larger than the case where the solder supply unit and the arm member are located in the printing position when viewed from the printing direction. It is configured to move to a retreat position where the amount of overlap is reduced. Here, the amount of overlap is reduced not only when the amount of overlap is less than the printing position by rotating the arm member below 90 degrees, but also when the arm member is rotated 90 degrees or more. Including the case where no overlap occurs. Therefore, with this configuration, even when the spatula member of the printing unit is located on the back side of the solder supply unit and the arm member as viewed from the operator, the solder supply unit and the arm member are connected to the spatula member of the printing unit. Since the amount of overlap with the position where the printer is placed is moved to a retracted position that is less than that at the printing position, the operator can easily access the spatula member of the printing unit during inspection and maintenance work. can do.

  In the configuration in which the overlap amount moves to a retracted position where the overlap amount is less than that in the printing position, preferably, the solder supply unit and the arm member are viewed from the printing direction by rotating the arm member, It is configured to move to a retracted position that does not overlap with the position where the spatula member of the printing unit is arranged during printing. If comprised in this way, even if the spatula member of a printing unit is located in the back | inner side of a solder supply part seeing from an operator, solder supply to the position which does not overlap with the position where the spatula member of a printing unit is arrange | positioned Since the part and the arm member are moved, the operator can more easily access the spatula member of the printing unit during inspection and maintenance work.

  In the configuration including the arm member that supports the solder supply unit, the print unit preferably includes a main body part that is linearly movable along the printing direction, and a support plate that is fixed to the main body part at both ends. The arm member that further includes a support member that supports the solder supply unit is attached to either the main body unit or the support plate via a bracket and is configured to be rotatable with respect to the support member. If comprised in this way, a solder supply part can be moved to a printing direction via a bracket, and since it is attached to either the main-body part or support plate of a support member to which a printing unit is attached, a solder supply part is attached. While being able to move integrally with the printing unit, the solder supply part can be easily moved to the retracted position by rotating the arm member. The arm member may be configured such that only the arm member can rotate with respect to the support member, or can rotate with respect to the support member by integrally rotating the arm member and the bracket. It may be configured.

  In the printing apparatus according to the above aspect, the printing apparatus preferably includes a first holding state in which at least one of the solder supply unit and the printing unit is held in the printing position, and a release state in which the printing apparatus is movable from the printing position. A first holding member that can be switched between. If comprised in this way, while being able to hold | maintain at least any one of a solder supply part and a printing unit in a printing position at the time of printing, it can be switched so that a movement to an evacuation position is carried out at the time of an inspection and maintenance work. This prevents the solder supply unit or printing unit from moving to the retreat position or wobbling during printing, so that the solder supply unit or printing unit interferes with other mechanisms inside the printing apparatus during printing. Or the deterioration of the print quality can be prevented.

  In the printing apparatus according to the above aspect, the printing apparatus preferably has a second holding state in which at least one of the solder supply unit and the printing unit is held in the retracted position, and a release state in which the movable state can be moved from the retracted position. A second holding member that can be switched to is further provided. According to this configuration, at the time of inspection and maintenance work, at least one of the solder supply unit and the printing unit can be held at the retracted position, and can be switched to be movable at the end of the work. Accordingly, it is possible to prevent the solder supply unit or the printing unit from moving from the retracted position during the inspection and maintenance work, so that the inspection and maintenance workability of the solder supply unit and the printing unit can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 are a perspective view and a side view, respectively, showing the overall configuration of a printing apparatus according to an embodiment of the present invention. 3-6 is a figure for demonstrating the structure of the printing apparatus shown in FIG. The structure of the printing apparatus 100 according to an embodiment of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 and 2, the printing apparatus 100 according to the present embodiment is provided on a base 1, a substrate transport unit 2 that is provided on the base 1 and transports a printed circuit board 200, and above the substrate transport unit 2. And a printing unit 3 that prints solder on the printed circuit board 200. The printed circuit board 200 is an example of the “board” in the present invention. The board conveyance unit 2 is provided between the conveyor 4a that carries in the printed board 200 before printing, the conveyor 4b that carries out the printed board 200 after printing, and the conveyors 4a and 4b, and holds the printed board 200. And a substrate positioning / elevating device 5 for placing the printed circuit board 200 at a printing position O (see FIG. 2) in contact with the lower surface of the mask 300 described later. The conveyors 4a and 4b are provided so as to extend in the substrate transport direction (X direction). The printing unit 3 includes a mask support unit 6 that supports a mask 300 used for printing, a printing mechanism unit 7 that prints solder on the printed circuit board 200 through the mask 300, and a printing mechanism unit 7 that is in printing direction during printing. And a drive unit 8 for driving in the (Y direction). The mask 300 is made of a plate-like member having flexibility, and has an opening region 301 in which openings having a predetermined pattern are formed. The mask 300 is fixed to a frame 302 made of a highly rigid member.

  The substrate positioning lifting device 5 includes a Y-axis table 51, an X-axis table 52, an R-axis table 53, and a Z-axis table 54, and includes an X direction, a Y direction, a Z direction, and an R direction (rotation directions in a horizontal plane). ) Can be moved.

  As shown in FIG. 2, a rail 51a is provided on the base 1 so as to extend in the Y direction, and the Y-axis table 51 is slidably attached to the rail 51a. Further, the Y-axis table 51 is configured to be driven in the Y direction by a servo motor and a ball screw mechanism (not shown). A rail 52a is provided on the Y-axis table 51 so as to extend in the X direction. The X-axis table 52 is slidably attached to the rail 52a, and is not illustrated by a servo motor and a ball screw mechanism (not shown). Is configured to be driven in the X direction with respect to the Y-axis table 51. A support mechanism 53a is provided on the X-axis table 52, and the R-axis table 53 is rotatably supported by the support mechanism 53a in a horizontal plane. Further, the R-axis table 53 is rotationally driven by a servo motor and a ball screw mechanism (not shown). A guide shaft 54 a that is fixed to the Z-axis table 54 and extends in the Z direction is inserted into the R-axis table 53, and the Z-axis table 54 is moved relative to the R-axis table 53 by a servo motor and a ball screw mechanism 54 b (not shown). It is configured to be driven in the direction.

  The Z-axis table 54 is provided with a pair of conveyors 55 extending in the X direction. The conveyor 55 is arranged so as to be connected to the conveyors 4a and 4b with the Z-axis table 54 lowered. Thereby, it is possible to transfer the printed circuit board 200 before printing from the conveyor 4a to the conveyor 55 and transfer the printed circuit board 200 after printing from the conveyor 55 to the conveyor 4b.

  Further, the Z-axis table 54 is provided with a lifting table 56 (see FIG. 2) that can be lifted in the vertical direction (Z direction) in the region between the pair of conveyors 55. A plurality of pins (not shown) for supporting the printed circuit board 200 from below are arranged on the upper surface of the lifting table 56. The lift table 56 is slidably attached to the Z-axis table 54 via a slide shaft 56a extending in the vertical direction, and is driven in the Z direction by a servo motor and a rack and pinion mechanism (not shown). It is configured to be. As the lift table 56 is raised, the printed board 200 on the conveyor 55 is raised and positioned at the same height as the clamp pieces 57a and 57b, and is also held by the clamp pieces 57a and 57b. The lower surface of 200 is supported by a pin (not shown). Further, after the printing, after the holding of the printed board 200 by the clamp pieces 57a and 57b is released, the lifting table 56 is lowered, so that the printed board 200 can be placed on the conveyor 55. After the printed printed circuit board 200 is placed on the conveyor 55, the lifting table 56 is further lowered to a position where it does not interfere with the printed circuit board 200 to be carried out and loaded.

  The Z-axis table 54 is provided with clamp pieces 57 a and 57 b that clamp the printed circuit board 200 on the conveyor 55. The clamp piece 57a is fixed to the Z-axis table 54, while the clamp piece 57b is provided to be movable in the Y direction. Thus, by moving the clamp piece 57b in the Y direction while pressing the printed board 200, the printed board 200 can be easily clamped by the clamp piece 57a and the clamp piece 57b.

  The mask support 6 is fixedly installed above the substrate positioning lift 5 via the frame members 1a and 1b of the base 1, and a pair of support plates 6a for supporting the vicinity of the outer edge of the mask 300 from below (FIG. 1). The mask 300 is supported by a clamp piece 6b that presses the upper surface of the frame 302 of the mask 300 placed on the support plate 6a from above.

  The printing mechanism unit 7 slides on the upper surface of the mask 300 while pressing the solder to squeeze the solder onto the printed circuit board 200 through the opening of the mask 300, and the solder that supplies the solder onto the mask 300. It includes a supply unit 72 and a support member 73 that supports the solder supply unit 72 and the squeegee unit 71 and can reciprocate in the printing direction (Y direction). The squeegee unit 71 is an example of the “printing unit” in the present invention.

  The support member 73 is disposed on a pair of guide rails 81 (to be described later) of the drive unit 8 and is attached to a pair of main body portions 731a and 731b movably attached in the Y direction, and both ends are supported by the main body portions 731a and 731b. And a plate-like support plate 732 provided so as to extend upward (Z1 direction). The support plate 732 supports the squeegee unit 71 and the solder supply unit 72 on the side surface on the Y1 direction side. The support plate 732 is configured to support the squeegee unit 71 near the center in the X direction, and to support the solder supply unit 72 with a predetermined distance from the squeegee unit 71 in the X1 direction side. .

  The squeegee unit 71 includes a printing load adjustment unit 711 and a squeegee lifting unit 712 as shown in FIGS. 3 and 4. The printing load adjustment unit 711 includes a servo motor 711a for pushing the squeegee lifting unit 712 downward during printing, a ball screw shaft 711b, and a belt 711c for transmitting the rotation of the motor shaft of the servo motor 711a to the ball screw shaft 711b. have. The ball screw shaft 711b is rotatably attached. A connecting portion (not shown) of the squeegee lifting unit 712 is screwed to the ball screw shaft 711b, and the ball screw shaft 711b is slightly rotated by the servo motor 711a via the belt 711c, thereby moving the squeegee lifting unit 712 in the vertical direction ( It is configured so that the rotational force of the servo motor 711a can be converted into a printing pressure load by raising and lowering slightly in the Z direction). The squeegee lifting unit 712 includes a squeegee 714 disposed on the Y2 direction side and a squeegee 717 disposed on the Y1 direction side. The squeegees 714 and 717 are examples of the “scalar member” of the present invention.

  An elevating mechanism 713a for elevating the squeegee 714 in the vertical direction (Z direction) is attached to the case member of the squeegee elevating unit unit 712, and a pair of guide shafts 713b for guiding the movement of the squeegee 714 in the vertical direction are provided. It is attached so that it can be raised and lowered. A plate-like attachment holder 715 for attaching the squeegee 714 is attached to the lower ends of the pair of guide shafts 713b. The squeegee 714 is detachably attached to the attachment holder 715 via a bolt (not shown). The squeegee 714 is configured to be moved up and down (Z direction) together with the pair of guide shafts 713b by the lifting mechanism 713a while being attached to the mounting holder 715. The squeegee 714 has a solder pressing surface 714b (see FIG. 2) that is inclined by a predetermined angle on the Y1 direction side. During the return pass printing, the squeegee 714 is lowered from a predetermined ascent position by the elevating mechanism 713a to bring the lower end of the solder pressing surface 714b into contact with the upper surface of the mask 300, and the printing load adjustment unit 711 moves the squeegee elevating unit 712. The printing load of the squeegee 714 (the lower end of the solder pressing surface 714b) on the mask 300 with which the printed circuit board 200 is in contact with the lower side is adjusted by moving it up and down slightly. Then, the return path (Y1 direction) printing is performed by moving the solder pressing surface 714b in the Y1 direction while pressing the solder.

  The case member of the squeegee lifting unit 712 is attached with an elevating mechanism 716a for elevating the squeegee 717 in the vertical direction (Z direction) and a pair of guide shafts for guiding the movement of the squeegee 717 in the vertical direction. 716b is attached so that raising / lowering is possible. A plate-like attachment holder 718 for attaching the squeegee 717 is attached to the lower end of the guide shaft 716b. The squeegee 717 is detachably attached to the attachment holder 718 via a bolt 717a as shown in FIG. It has been. The squeegee 717 is configured to be moved up and down together with the pair of guide shafts 716 b by the lifting mechanism 716 a while being attached to the mounting holder 718. The squeegee 717 has a solder pressing surface 717b (see FIG. 2) inclined by a predetermined angle on the Y2 direction side. At the time of forward printing, the squeegee 717 is lowered from a predetermined raised position so that the lower end of the solder pressing surface 717b is brought into contact with the upper surface of the mask 300, and the printing load adjustment unit 711 slightly raises and lowers the squeegee lifting unit 712. This adjusts the printing load of the squeegee 717 (the lower end of the solder pressing surface 717b) to the mask 300 with which the printed circuit board 200 is in contact with the lower side. Then, forward printing (Y2 direction) is performed by moving the solder pressing surface 717b in the Y2 direction while pressing the solder.

  During printing, each squeegee 714 and 717 repeats forward and backward movement while pressing the solder. For this reason, when printing is repeated, the solder remains attached to the squeegees 714 and 717, and the solder drips onto the mask 300 from the higher position of the squeegee 714 or 717 while the squeegee unit 71 is moving. Therefore, the print quality is adversely affected. For this reason, the squeegees 714 and 717 need to be removed at a predetermined frequency, inspected and cleaned, and then attached again. In addition, the squeegees 714 and 717 need to be replaced with corresponding squeegees 714 and 717 in accordance with the size of the printed circuit board 200 to be printed. For this reason, the workability of the inspection and maintenance work of the squeegees 714 and 717 affects the productivity of the printing apparatus 100.

  Here, the squeegee 717 is attached and detached as follows. The mounting holder 718 is provided with a notch (not shown) on the Y1 direction side that has a width comparable to that of the shaft portion of the bolt 717a and that allows the shaft portion of the bolt 717a to be attached and detached. At the time of mounting, the shaft portion of the bolt 717 a is fitted into the notch of the mounting holder 718 with the bolt 717 a attached to the squeegee 717 loosened. Then, the squeegee 717 is attached to the attachment holder 718 by tightening the bolt 717 a with the shaft portion of the bolt 717 a fitted in the notch of the attachment holder 718. On the other hand, at the time of removal, the bolt 717 a attached to the squeegee 717 is loosened and the shaft portion of the bolt 717 a is removed from the notch of the attachment holder 718. Thus, the squeegee 717 can be easily attached to and detached from the attachment holder 718 using the bolts 717a, so that maintenance work such as replacement and cleaning can be easily performed. The same applies to the attachment of the squeegee 714 to the attachment holder 715.

  The solder supply unit 72 is fixed to the support plate 732 so as to protrude in the Y1 direction from the side surface on the arrow Y1 direction side of the support plate 732, the syringe 721 in which the solder is accommodated, the syringe 721, and the support plate 732. And a bracket 723 that rotatably supports 722. The syringe 721 and the arm 722 are examples of the “solder supply unit” and the “arm member” of the present invention, respectively.

  Here, in this embodiment, as shown in FIG. 4, the syringe 721 supported by the bracket 723 and the arm 722 is spaced from the center in the X direction of the squeegee unit 71 toward the Y1 direction during printing. The print position P is arranged. The syringe 721 is configured to be held at the printing position P together with the arm 722 by a toggle clamp 726 attached to the bracket 723. On the other hand, at the time of inspection and maintenance work, as shown in FIG. 3, with the toggle clamp 726 in the release position, the arm 722 that supports the syringe 721 is rotated in the Q1 direction about the rotation shaft 723a. Thus, it is configured to be movable to the retreat position Q. At this time, the retracted position Q is a position where the arm 722 and the bracket 723 extend linearly along the Y direction when the arm 722 rotates about an angle of 90 degrees. Therefore, the syringe 721 arranged at the printing position P located on the Y1 direction side of the squeegee unit 71 draws an arc-shaped trajectory having the radius L1 (see FIG. 6) of the arm 722 as a radius, and L1 ( 6) and moves to the retracted position Q separated by L1 (see FIG. 6) in the Y1 direction. In the retracted position Q, the solder supply unit 72 is located outside the squeegees 714 and 717 of the squeegee unit 71 in the X1 direction when viewed from the Y1 direction. The syringe 721 of the solder supply unit 72 is configured to be switchable to the retracted position Q together with the arm 722 by a ball plunger 729 attached to the bracket 723. The toggle clamp 726 and the ball plunger 729 are examples of the “first holding member” and the “second holding member” of the present invention, respectively.

  In addition, a supply port 721a (see FIG. 2) for discharging solder is provided at the lower portion of the syringe 721. The syringe 721 includes a piston (not shown) and pressurizes the piston in the syringe 721 using a discharge valve 725 attached to the end of the support plate 732 of the support member 73. Solder is discharged from the supply port 721a (see FIG. 2). In addition, a capacitive sensor 721b is provided on the side of the syringe 721. The amount of solder in the syringe 721 can be detected by the sensor 721b.

  In the present embodiment, the syringe 721 and the arm 722 are moved to a retreat position Q located outside the squeegee unit 71 on the X1 direction side when viewed from the Y direction, so that the operator can perform inspection and maintenance work. The access to the squeegee unit 71 is not blocked. Here, in this embodiment, as shown in FIG. 3, the syringe 721 has a position of the squeegee unit 71 and a position of the syringe 721 and the arm 722 when viewed from the printing direction (Y direction) at the retracted position Q. Are configured so as not to overlap by being arranged at positions spaced apart in the X1 direction without overlapping. Therefore, for example, when performing work from the Y1 direction side during inspection and maintenance work such as replacement of the squeegees 714 and 717 described above, the operator can access the squeegee unit 71 without being blocked by the syringe 721 and the arm 722. Is configured to be possible. On the other hand, when performing maintenance work such as inspection of the syringe 721 and replenishment of solder, the work can be performed with the syringe 721 held at either the printing position P or the retracted position Q.

  In the present embodiment, the arm 722 includes a distal end 722 a that supports the syringe 721, a base 722 b, and a handle 722 c provided on the upper surface side of the arm 722. A rotating member 724 is attached to the base 722 b of the arm 722. The rotating member 724 is attached to the bracket 723. That is, the syringe 721 is attached to the bracket 723 via the arm 722 and the rotating member 724. Further, the rotating shaft 723a is inserted into and supported by a shaft hole 724a (see FIG. 5) of the rotating member 724 and shaft holes 723d and 723e provided in a pair of bearing portions 723b and 723c of a bracket 723 described later. Thus, the rotation shaft 723a press-fitted and held in the arm 722, the rotation member 724, and the shaft hole 724a is rotatably supported by the bracket 723. Further, at the time of inspection and maintenance work, the operator holds the handle 722c and rotates the arm 722 to move the syringe 721 to the retracted position Q.

  As shown in FIG. 5, the rotating member 724 attached to the arm 722 is pressed by the above-described shaft hole 724 a, the engaging member 724 b for engaging with the ball plunger 729, and the toggle clamp 726. Thus, a pressing surface 724c for holding the arm 722 and the syringe 721 at the printing position P and a notch 724d for forming the pressing surface 724c are included. The pressing surface 724 c is formed at a position away from the shaft hole 724 a toward the distal end portion 722 a of the arm 722. Further, as shown in FIG. 3, a flat contact surface R2 is formed on the side surface of the rotating member 724 on the X2 direction side. When the arm 722 and the rotation member 724 are rotated in the P1 direction to move the syringe 721 to the printing position P, the contact surface R2 of the rotation member 724 is a contact surface of a positioning member 723g described later attached to the bracket 723. It is comprised so that R1 may be contacted. A pressing surface 724c formed by a notch 724d is provided at a predetermined position opposite to the contact surface R2 (X1 direction side in FIG. 3). As shown in FIG. 4, the rotation member 724 is fixed by the toggle clamp 726 pressing the pressing surface 724c in the Y2 direction in a state where the contact surface R1 and the contact surface R2 are in contact with each other. Yes. As shown in FIG. 5, the engaging member 724 b is attached to the upper surface of the rotating member 724. When the syringe 721 is positioned at the retracted position Q, the engaging member 724b is configured to be positioned immediately below a ball plunger 729 described later. A recess for engaging with the ball plunger 729 is formed on the upper surface of the engaging member 724b.

  In the present embodiment, as shown in FIG. 6, the bracket 723 is attached in the vicinity of the end of the support plate 732 in the X1 direction so as to protrude in the Y1 direction. As shown in FIG. 5, the bracket 723 includes a pair of upper and lower bearing portions 723b and 723c provided at the tip on the Y1 direction side. Further, in the bearing portion 723b on the upper side (Z1 direction), a hole portion 723f is provided in addition to the shaft hole 723d into which the rotating shaft 723a is inserted. A ball plunger 729 for holding the syringe 721 at the retracted position Q is attached to the hole 723f. As shown in FIG. 3, a positioning member 723 g for positioning the syringe 721 at the printing position P is attached to the side surface on the X2 direction side of the tip of the bracket 723. A toggle clamp 726 is attached to the positioning member 723g via a fixture 723h having an L shape on the upper surface, and a contact surface R1 for contacting the contact surface R2 of the rotating member 724 on the side surface on the Y1 direction side. Is formed. A buffer member 727 and a proximity sensor 728 made of an elastic body are attached to the lower portion of the positioning member 723g.

  As shown in FIG. 5, the ball plunger 729 is fixed by a nut 729a to a hole portion 723f provided at a tip portion on the Y1 direction side of a bearing portion 723b disposed above (Z1 direction). This ball plunger 729 holds a rigid sphere 729b in an axial direction so as to be movable in the main part of the screw shaft. The rigid sphere 729b is urged downward (Z2 direction) by a spring member 729c so that a part thereof is exposed to the outside from the tip. The ball plunger 729 prevents the rigid sphere 729b from falling off by narrowing the hole diameter at the tip of the main body. The ball plunger 729 is attached to the hole 723f downward (Z2 direction), and a hard sphere 729b protrudes from the lower surface of the bearing 723b.

  Here, when the operator rotates the arm 722 from the printing position P in the Q1 direction, the engaging member 724b of the rotating member 724 moves to the lower side of the ball plunger 729, so that the hard ball 729b of the ball plunger 729 is moved. Is pushed up into the main body of the ball plunger 729 by the engaging member 724b. When the syringe 721 moves to the retracted position Q by the rotation of the arm 722, the recess provided on the upper surface of the engagement member 724b is moved to just below the ball plunger 729. For this reason, the rigid sphere 729b pushed up inside the ball plunger 729 protrudes downward by the urging force of the spring member 729c and fits into the recess of the engaging member 724b. Accordingly, the rotation of the arm 722 is suppressed by the rotation member 724 and the ball plunger 729 being engaged. Further, the syringe 721 is configured to be in the second holding state in which the ball plunger 729 and the concave portion of the engaging member 724b are engaged to be held at the retracted position Q. On the other hand, when the operator applies a predetermined force to rotate the arm 722 from the retracted position Q in the P1 direction, the rigid ball 729b of the ball plunger 729 is disengaged from the recess of the engaging member 724b and the engagement is released. . Thereby, the syringe 721 is comprised so that it may be in the cancellation | release state which can be rotated from a 2nd holding | maintenance state. As described above, in this embodiment, the ball plunger 729 is rotated in the second holding state in which the syringe 721 is held at the retracted position Q by rotating the syringe 721 by applying a predetermined force from the retracted position Q. It is comprised so that it can switch to a state.

  As shown in FIGS. 3 and 4, the positioning member 723 g positions the syringe 721 at the printing position P and fixes the syringe 721 at the printing position P when the arm 722 is rotated in the P1 direction. It is provided for. When the arm 722 is rotated in the P1 direction and the syringe 721 reaches the printing position P, the positioning member 723g is attached so that the contact surface R2 of the rotation member 724 and the contact surface R1 of the positioning member 723g come into contact with each other. ing. Further, when the contact surfaces R1 and R2 come into contact with each other, further rotation of the rotating member 724 is prevented. Accordingly, the rotation of the arm 722 is stopped and the syringe 721 is positioned at the printing position P.

  A fixing tool 723h attached to the upper surface of the positioning member 723g fixes a toggle clamp 726 for holding the syringe 721 at the printing position P on the side surface on the Y1 direction side. The toggle clamp 726 is configured to be in a first holding state in which the arm 722 is fixed by pressing and fixing the rotating member 724 at a predetermined position, and the syringe 721 is switchably held at the printing position P. .

  The toggle clamp 726 includes a lever 726a that fixes and releases the rotating member 724, a pressing member 726b that fixes the rotating member 724 by pressing the pressing surface 724c of the rotating member 724, and a lever 726a that presses the lever 726a. And a base 726c that rotatably supports the member 726b. The lever 726a and the pressing member 726b are connected by a link member (not shown). When the operator rotates the lever 726a in the P2 direction so that the lever 726a is tilted while the syringe 721 is at the printing position P, the pressing member 726b connected by the link member is moved along with the rotation of the lever 726a. Turn in the P2 direction. When the lever 726a is tilted to a predetermined position, the pressing member 726b is configured to press in the Y2 direction while coming into contact with the pressing surface 724c of the rotating member 724. At this time, since the rotating member 724 is in contact with the positioning member 723g at the contact surface R2, the toggle clamp 726 presses the pressing surface 724c in the Y2 direction, so that the rotating member 724 and the positioning member 723g are pressed. 726b so that it can be sandwiched and fixed.

  On the other hand, in the present embodiment, the toggle clamp 726 is a link member when the lever 726a is rotated in the Q2 direction from the state where the rotation member 724 is fixed (the state where the lever 726a is tilted to a predetermined position). The pressing member 726b connected by the rotation is also rotated in the Q2 direction with the rotation of the lever 726a. Thereby, fixation of the rotation member 724 is cancelled | released and the arm 722 will be in the cancellation | release state which can rotate. As described above, when the syringe 721 is at the printing position P, the toggle clamp 726 fixes the rotating member 724 and holds the syringe 721 at the printing position P by rotating the lever 726a in the P2 direction. 1 enters the holding state. On the other hand, by rotating the lever 726a in the Q2 direction, the fixing of the rotating member 724 is released, and the syringe 721 can be moved. As described above, the toggle clamp 726 is configured to be switched between the first holding state in which the syringe 721 is held at the printing position P and the rotatable releasing state by the rotation of the lever 726a.

  Further, as shown in FIG. 3, in the buffer member 727 attached to the lower portion of the positioning member 723g, the arm 722 rotates and the contact surface R2 of the rotation member 724 and the contact surface R1 of the positioning member 723g come into contact. It is provided to relieve shock. For this reason, as shown in FIG. 5, the buffer member 727 is provided so as to slightly protrude in the Y1 direction from the contact surface R1 by the interval t. That is, when the arm 722 is rotated in the P1 direction and the syringe 721 is moved to the printing position P, the contact surface R2 of the rotating member 724 first comes into contact with the buffer member 727 and the impact at the time of contact is reduced. Next, the contact surface R2 of the rotating member 724 and the contact surface R1 of the positioning member 723g are brought into contact with each other by further pressing the arm 722 in the P1 direction.

  Further, a proximity sensor 728 is attached to the lower part of the positioning member 723g so as to be adjacent to the lower side of the buffer member 727. The proximity sensor 728 is provided to detect that the syringe 721 is at the printing position. When the syringe 721 is at the printing position P, the proximity sensor 728 is provided so as to face the lower portion of the contact surface R2 of the rotating member 724 in close proximity. When the rotating member 724 is fixed by the toggle clamp 726, the proximity sensor 728 detects the contact surface R2 of the rotating member 724, so that the syringe 721 can be detected at the printing position P.

  The drive unit 8 includes a pair of guide rails 81 that support the pair of body portions 731a and 731b of the support member 73 so as to be movable in the Y direction, a ball screw shaft 82 that extends in the Y direction, and a servo motor 83 that rotates the ball screw shaft 82. Including. Further, a ball nut 731c (see FIG. 2) to which the ball screw shaft 82 is screwed is provided on the main body portion 731a of the support member 73. The support member 73 is configured to move in the Y direction when the ball screw shaft 82 is rotated by the servo motor 83. The squeegee unit 71 and the solder supply unit 72 are supported by the support plate 732 of the support member 73, and the main body portion 731 a of the support member 73 is driven by the drive unit 8, so that the squeegees 714 and 717 of the squeegee unit 71 are soldered. The syringe 721 of the supply unit 72 is configured to be integrally driven by one drive unit 8.

  Further, the servo motor 83 of the drive unit 8 for moving the support member 73 in the printing direction (Y direction), the servo motor 711a of the printing load adjustment unit unit 711 for slightly raising and lowering the squeegee lifting unit unit 712, and the squeegee 714. Driving of the elevating mechanisms 713a and 716a for elevating and lowering 717 and the discharge valve 725 for discharging solder is controlled by a control unit (not shown).

  Next, the operation of the syringe during inspection and maintenance work will be described.

  At the time of inspection and maintenance work, as shown in FIG. 4, the operator lifts the lever 726a of the toggle clamp 726 attached to the bracket 723 in the Q2 direction, and releases the fixing of the rotating member 724. Accordingly, the syringe 721 is switched from the first holding state held at the printable printing position P to the rotatable releasing state.

  Next, as shown in FIG. 6, the worker holds the handle 722 c of the arm 722 and rotates it toward the retracted position Q in the Q1 direction. As a result, the rotation member 724 rotates about the rotation shaft 723a, so that the syringe 721 supported by the arm 722 moves toward the retreat position Q.

  When the syringe 721 is moved to the retracted position Q, the ball plunger 729 attached to the bracket 723 is engaged with the engaging member 724b of the rotating member 724, thereby holding the syringe 721 at the retracted position Q. Thereby, the syringe 721 is switched from the rotatable release state to the second holding state engaged by the ball plunger 729.

  In this second holding state, as shown in FIG. 6, the syringe 721 and the arm 722 are located at the retracted position Q on the outer side on the X1 direction side when viewed from the Y direction with respect to the squeegee unit 71. For this reason, when an operator performs inspection and maintenance work from the Y1 direction side of the printing apparatus 100, the squeegee unit 71 can be accessed without being blocked by the syringe 721 and the arm 722. For this reason, the above-described replacement work of the squeegees 714 and 717 can be easily performed. On the other hand, since the inspection and maintenance work of the syringe 721 is not obstructed by the squeegee unit 71, the operator can easily work at the retracted position Q and the printing position P as necessary. is there.

  After the inspection and maintenance work is completed, the operator releases the engagement of the ball plunger 729 by rotating the arm 722 in the P1 direction with a predetermined force. Then, after the syringe 721 is moved to the printing position P, the rotation member 724 is fixed by rotating the toggle clamp 726 that has been rotated in the Q2 direction in the P2 direction. As a result, the syringe 721 is switched from the released state to the first holding state fixed at the printing position P. At this time, the proximity sensor 728 detects the position of the contact surface R2 of the rotating member 724, thereby detecting whether or not the syringe 721 has been correctly moved to the printing position P. When the fixing by the toggle clamp 726 is not performed, or when the fixing is insufficient, the operator is notified of an error by a predetermined notification unit such as a display unit (not shown) and the syringe 721 is not fixed at the printing position P. As long as printing cannot be resumed.

  7 to 9 are simplified cross-sectional views for explaining the printing operation of the printing apparatus according to the present embodiment. Next, a printing operation of the printing apparatus 100 according to the present embodiment will be described with reference to FIGS. In the following description, printing performed by moving the printing mechanism unit 7 in the arrow Y2 direction and the arrow Y1 direction is referred to as forward printing and backward printing, respectively.

  As an initial state at the time of forward printing, as shown in FIG. 7, the printing mechanism unit 7 is located at the end in the arrow Y1 direction, and the squeegee 717 and the squeegee 714 are raised. As an operation at the time of printing, first, after the printed circuit board 200 to be printed is carried from the conveyor 4a (see FIG. 1) to the conveyor 55 (see FIG. 1) of the substrate positioning / elevating device 5, the printed circuit board 200 is moved to the substrate. It is raised by the positioning lift 5 and moved to the printing position O. Specifically, the printed circuit board 200 rises while its lower surface is supported by the lifting table 56 (see FIG. 2), and the side surface of the printed circuit board 200 is clamped on the conveyor 55 by the clamp pieces 57a and 57b. Thereafter, the Z-axis table 54 is raised, and the printed circuit board 200 is integrated with the conveyor 55 and moved to the printing position O in contact with the lower surface of the mask 300 while the lower surface is supported by the lifting table 56. Then, the squeegee 717 located at the raised position is moved to the lowered position by the lifting mechanism 716a, so that the solder pressing surface 717b of the squeegee 717 is brought into contact with the upper surface of the mask 300. At this time, a solder peak 500 (see FIG. 7) is located on the front side (arrow Y2 direction side) of the printing direction (arrow Y2 direction) of the solder pressing surface 717b of the squeegee 717.

  Next, the printing mechanism 7 is moved in the direction of the arrow Y2 while the printing load is adjusted to a predetermined load by the printing pressure adjustment unit 711, so that the forward path is printed by the squeegee 717. Then, as shown in FIG. 7, the forward printing is finished when the squeegee 717 exceeds the end portion 301 a of the opening area 301 of the mask 300. A state in which the printing of the forward path is finished is shown by an imaginary line (two-dot chain line) in FIG.

  Next, the printed circuit board 200 (see FIG. 8) after printing is lowered by the substrate positioning lift 5. Also, the squeegee 717 is moved to the raised position. Next, the printed board 200 after printing is carried out from the board positioning / elevating device 5 via the conveyor 4b (see FIG. 1). In addition, the printing mechanism unit 7 is further moved in the Y2 direction from the position where the forward printing is finished. At this time, since the squeegee 717 is located at the raised position, even if the printing mechanism unit 7 is moved in the direction of the arrow Y2, the solder pile 500 on the upper surface of the mask 300 does not move from the position where the forward printing is finished.

  Next, as shown in FIG. 8, the printing mechanism unit 7 further moves in the direction of the arrow Y <b> 2, so that the supply port 721 a of the syringe 721 is located outside the end portion 301 a of the opening region 301 of the mask 300. Moved to position F. At this time, since the squeegee 714 is located at the raised position, interference between the frame 302 of the mask 300 and the solder pressing surface 714b of the squeegee 714 is suppressed. Then, at the solder supply position F where the supply port 721a of the syringe 721 is moved to the outside of the end portion 301a of the opening region 301 of the mask 300, the supply of solder is started and the printed circuit board to be subjected to the next printing The solder supply is completed before the 200 is loaded.

  Next, the printed circuit board 200 to be subjected to the next printing is carried from the conveyor 4a (see FIG. 1) to the conveyor 55 (see FIG. 1) of the substrate positioning lifting device 5. In addition, the printing mechanism unit 7 is moved to the start position of the backward printing (printing in the direction of the arrow Y1) (a position where the squeegee 714 is located immediately behind the solder pile 500 on the mask 300).

  Next, as shown in FIG. 9, the squeegee 714 located at the raised position is moved to the lowered position by the elevating mechanism 713 a, whereby the solder pressing surface 714 b of the squeegee 714 is brought into contact with the upper surface of the mask 300. At this time, the solder crest 500 is located on the front side (arrow Y1 direction side) of the printing direction (arrow Y1 direction) of the solder pressing surface 714b of the squeegee 714. After that, as shown in FIG. 9, the printed circuit board 200 is raised by the substrate positioning lift 5 and comes into contact with the lower surface of the mask 300 supported by the mask support 6.

  Next, while the printing load is adjusted to a predetermined load by the printing load adjustment unit 711, the printing mechanism unit 7 is moved in the direction of the arrow Y1 by driving the servo motor 83, thereby printing the return path. Then, as indicated by an imaginary line (two-dot chain line) in FIG. 9, the return path printing is completed when the solder peak 500 exceeds the end 301 b of the opening region 301 of the mask 300 on the arrow Y1 direction side.

  Next, the printed circuit board 200 after printing is lowered by the substrate positioning lift 5. Further, the squeegee 714 is moved to the raised position. And the printed circuit board 200 after printing is carried out from the board | substrate positioning raising / lowering apparatus 5 via the conveyor 4b (refer FIG. 1). In addition, the printing mechanism unit 7 is moved to the forward printing start position. Thereafter, the printing of the solder on the printed circuit board 200 is performed by repeating the forward printing and the backward printing described above.

  In the present embodiment, as described above, the syringe 721 and the squeegee unit 71 are configured such that the syringe 721 is movable from the printing position P aligned along the printing direction (Y direction) to the predetermined retraction position Q. Are arranged along the printing direction (Y direction) and move integrally, the syringe 721 can be moved to the retracted position Q. Therefore, at the time of inspection or maintenance work, the syringe 721 and the squeegee unit 71 arranged along the printing direction (Y direction) are integrally moved to the vicinity of the work position where the worker is located and viewed from the worker. If the front-side syringe 721 is moved to the retracted position Q, the operator can easily perform inspection and maintenance work on the back-side squeegee unit 71 as well. Thereby, inspection and maintenance workability of both the squeegee unit 71 and the syringe 721 can be improved.

  In the present embodiment, as described above, the syringe 721 is configured to move from the printing position P to the retracted position Q when the arm 722 is rotated, so that the syringe 721 is inspected and maintained. The syringe 721 can be easily moved to the retracted position Q simply by rotating the supporting arm 722.

  In the present embodiment, as described above, the squeegees 714 and 717 of the squeegee unit 71 are printed in the syringe 721 and the arm 722 when viewed from the printing direction (Y direction) as the arm 722 is rotated. Even if the squeegees 714 and 717 of the squeegee unit 71 are located on the back side of the syringe 721 as viewed from the operator, the squeegee unit is configured to move to the retracted position Q that does not overlap the position where it is disposed. Since the syringe 721 and the arm 722 are moved to a position that does not overlap with the position where the squeegees 714 and 717 of the 71 are arranged, the operator can perform more on the squeegees 714 and 717 of the squeegee unit 71 during inspection and maintenance work. Can be easily accessed.

  In the present embodiment, as described above, the arm 722 that supports the syringe 721 is attached to any of the main body portions 731a and 731b and the support plate 732 via the bracket 723, and the support plate 732 of the support member 73. The syringe 721 can be moved in the printing direction (Y direction) via the bracket 723 and attached to the support plate 732 of the support member 73 to which the squeegee unit 71 is attached. Therefore, the syringe 721 can be easily moved to the retracted position Q by turning the arm 722 while allowing the syringe 721 to move integrally with the squeegee unit 71.

  In the present embodiment, as described above, the printing apparatus 100 is a toggle clamp that can switch the syringe 721 between the first holding state in which the syringe 721 is held at the printing position P and the release state in which the syringe 721 is movable from the printing position P. By providing 726, the syringe 721 can be held at the printing position P during printing, and can be switched to the retracted position Q during inspection and maintenance work. This prevents the syringe 721 from moving to the retreat position Q or wobbling during printing, so that the syringe 721 interferes with other mechanisms inside the printing apparatus 100 during printing, Can be prevented from decreasing.

  In the present embodiment, as described above, the printing apparatus 100 can change the ball plan in which the syringe 721 can be switched between the second holding state in which the syringe 721 is held at the retracted position Q and the release state in which the syringe 721 is movable from the retracted position Q. By providing the jar 729, the syringe 721 can be held at the retracted position Q at the time of inspection and maintenance work, and can be switched to be movable at the end of the work. Accordingly, the syringe 721 can be prevented from moving from the retracted position Q during inspection and maintenance work, so that the inspection and maintenance workability of the syringe 721 and the squeegee unit 71 can be further improved.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, an example in which the syringe 721 is configured to be movable to the printing position P and the retracted position Q has been shown. However, the present invention is not limited to this, and for example, The arrangement is changed, and the X1 direction end of the printing load adjustment unit 711 is rotatably attached to the tip of the bracket 723 in the Y1 direction, and the syringe 721 is directly fixed to the center of the side surface of the support plate 732 on the Y1 direction. By doing so, the squeegee unit 71 is arranged on the Y1 direction side of the syringe 721. Accordingly, the squeegee unit 71 may be configured to be movable between a printing position where the squeegees 714 and 717 are parallel to the support plate 732 and a retracted position where the squeegees 714 and 717 are substantially orthogonal to the support plate 732. . Further, both the syringe and the squeegee unit may be configured to be movable, and at least one of the squeegee unit and the syringe may be configured to be movable to the retracted position.

  In the present embodiment, the squeegee unit 71 has shown an example in which the two squeegees 714 and 717 can be moved up and down to enable printing in the forward path and printing in the backward path. Not limited to this, as in the first modification shown in FIG. 10, the squeegee 614 may be configured to rotate so that the forward path and the return path can be printed by only one squeegee 614.

  In the printing apparatus 100a according to the first modification, the squeegee unit 610 includes one squeegee 614 that is configured to be rotatable and a squeegee lifting unit 611 that moves the movable unit 612 to which the squeegee 614 is attached in the vertical direction. And a rotation mechanism 613 for rotating the squeegee 614 around a rotation shaft 613b extending in the X direction. During printing, the squeegee elevating unit 611 lowers the squeegee 614 to contact the mask 300, and when changing the printing direction, the squeegee elevating unit 611 raises the squeegee 614 while the squeegee 614 is rotated. It is rotated by the moving mechanism unit 613. The rotation mechanism unit 613 is configured to transmit the rotation of the motor shaft of the servo motor 613a provided in the movable unit 612 to the rotation shaft 613b by a plurality of gears. The rotation mechanism unit 613 rotates the squeegee 614 so that the solder pressing surface 614a faces the Y1 direction when printing in the Y1 direction (return path), and the solder pressing surface 614a faces the Y2 direction when printing in the Y2 direction (outward path). Thus, the squeegee 614 is configured to rotate. As described above, in the first modification, the squeegee 614 is rotated by the rotation mechanism unit 613, whereby the forward path (Y2 direction) and the backward path (Y1 direction) are printed by one squeegee 614. Is possible.

  In addition, it may be configured to print only in one direction of the forward path or the backward path. In this case, since it is not necessary to change the solder pressing surface, it is not necessary to rotate the squeegee, and it is not necessary to provide two squeegees for the forward path and the backward path.

  In the present embodiment, the example in which the syringe 721 is arranged on the Y1 direction side with respect to the squeegee unit 71 has been shown. However, the present invention is not limited thereto, and the syringe is arranged on the Y2 direction side with respect to the squeegee unit. It may be. The squeegee unit and the syringe need only be arranged side by side along the printing direction (Y direction).

  In the present embodiment, the bracket 723 that supports the syringe 721 is attached so as to protrude from the support plate 732 of the support member 73 in the Y1 direction. However, the present invention is not limited to this, and FIG. The bracket 823 may be attached to the main body 831b of the support member 830 as in the second modification shown in FIG. In the printing apparatus 100b according to the second modification, the bracket 823 is attached to the main body portion 831b of the support member 830. The bracket 823 is provided so as to protrude from the main body portion 831b, and is configured to rotatably support the arm 722. The bracket 823 may be attached not to the main body part 831b on the X1 direction side but to the main body part 831a on the X2 direction side. The bracket may be attached to a position where the arm and the syringe can be rotatably supported in accordance with the size of the printing apparatus and the internal layout. Furthermore, the bracket may be configured such that the syringe moves from the printing position to the retracted position by rotating integrally with the arm.

  In the present embodiment, the support plate 732 that supports the squeegee unit 71 and the bracket 723 is supported by the main body portions 731a and 731b at both ends, and is provided to extend in the Z1 direction. The invention is not limited to this, and the support plate 932 is provided so as to extend in the Y direction, and the squeegee unit 810 is divided into upper and lower parts and a bracket 923 is provided, as in the third modification shown in FIGS. You may support so that it may hang down (Z2 direction). In the printing apparatus 100c according to the third modification, the support plate 932 is formed in a flat plate shape so that both ends are supported by the main body portions 931a and 931b of the support member 930 at predetermined positions in the Z direction and extend in the Y direction. Has been. Elevating mechanisms 813 a and 816 a that constitute the squeegee unit 810 and raise and lower the squeegee 814 and the squeegee 817 are attached to the upper surface of the support plate 932. The support plate 932 is formed with openings 932a (see FIG. 13) for connecting the squeegees 814 and 817 and the lifting mechanisms 813a and 816a. Similarly, an opening 932a (see FIG. 13) is formed to release a pair of guide shafts 813b and 816b for guiding the movement of the squeegees 814 and 817 in the vertical direction. Thereby, each squeegee 814 and 817 is comprised so that raising / lowering is possible independently. The support plate 932 is integrally formed with a protruding portion 932b that protrudes in the Y1 direction. A bracket 923 is attached so as to protrude downward (Z2 direction) from the protruding portion 932b, and the arm 722 is rotatably supported by a rotating shaft 923a.

  In addition, the bracket 923 may protrude from the support plate 932 in the Y2 direction. In addition, various arrangements of the squeegee unit, the bracket, and the support plate can be considered. The squeegee unit and the syringe supported by the bracket (and the arm) are arranged along the printing direction, and the squeegee unit It suffices that at least one of the syringes is configured to be movable from the printing position to a predetermined retracted position.

  In the present embodiment, the syringe 721 is configured to be movable from the printing position P to the retracted position Q by rotating the arm 722 supporting the syringe 721 in the P1 direction. The syringe is not limited to this, and the syringe may be configured to move to the retracted position by moving linearly. The syringe may be configured to move to a predetermined retreat position by linearly moving or rotating upward (Z1 direction). The syringe may be configured to be movable from the printing position to a predetermined retreat position, and the moving direction and path may be adjusted as appropriate according to the layout of the printing apparatus.

  In the present embodiment, the syringe 721 and the arm 722 are separated from the outer side of the squeegee unit 71 on the X1 direction side when the arm 722 rotates in the P1 direction as viewed from the printing direction (Y direction). Although an example is shown in which the squeegees 714 and 717 of the unit 71 are configured to move to the retreat position Q that does not overlap, the present invention is not limited to this, and the retreat position does not overlap the squeegee of the squeegee unit. It does not have to be configured. That is, the inspection and maintenance workability can be improved even if the squeegee unit and the syringe are only slightly shifted from the printing direction at the retracted position. Therefore, the syringe may be configured to move to a retracted position that slightly shifts with respect to the squeegee unit. For example, in this embodiment, the position of the syringe 721 when the arm 722 and the rotating member 724 are rotated by 30 degrees, 45 degrees, or 60 degrees in the Q1 direction from the printing position P shown in FIG. It is good. With this configuration, when viewed from the operator, the amount of overlap of the syringe 721 and the arm 722 with the position where the squeegees 714 and 717 of the squeegee unit 71 are arranged is smaller than when the position is at the printing position P. Since it is moved to the retreat position Q, the operator can easily access the squeegees 714 and 717 of the squeegee unit 71 during inspection and maintenance work.

  Further, for example, the position of the rotation shaft 723a that becomes the rotation center of the arm 722 shown in FIG. 6 is arranged in front of the squeegee unit 71 (Y1 direction) and closer to the center in the X direction, and the radius at the time of rotation. The movement amount of the syringe 721 in the Y1 direction at the retracted position Q may be reduced by reducing the length L (see FIG. 6) of the arm 722 corresponding to.

  In the present embodiment, the syringe 721 is configured to be held at the printing position P by the toggle clamp 726. However, the present invention is not limited to this, and screws, pins, and other fixing methods are used. It may be configured to be held by. In addition, the syringe is fixed to the printing position P with an electromagnet, and the arm is rotated using a servo motor or the like, so that the syringe is automatically moved to the retracted position based on the operator's button operation. It may be configured.

  Similarly, in the present embodiment, the syringe 721 is configured to be held at the retracted position Q by the ball plunger 729. However, the present invention is not limited to this, and a screw, a pin, a toggle clamp, or the like. You may comprise so that it may hold | maintain by various methods, such as an electromagnet.

1 is a perspective view showing a printing apparatus according to an embodiment of the present invention. It is a side view which shows the printing apparatus shown in FIG. It is a perspective view which shows the case where the syringe of the printing apparatus shown in FIG. 1 exists in a retracted position. It is a perspective view which shows the case where the syringe shown in FIG. 3 exists in a printing position. In FIG. 3, it is a longitudinal cross-sectional view for demonstrating the detailed structure of the rotation member of an arm. It is a top view for demonstrating the movement to the printing position and retracted position of the syringe of the printing apparatus shown in FIG. FIG. 2 is a diagram for explaining a printing operation of the printing apparatus illustrated in FIG. 1. FIG. 2 is a diagram for explaining a printing operation of the printing apparatus illustrated in FIG. 1. FIG. 2 is a diagram for explaining a printing operation of the printing apparatus illustrated in FIG. 1. It is a side view which shows the printing apparatus by the 1st modification of one Embodiment of this invention. It is a top view for demonstrating arrangement | positioning of the bracket of the printing apparatus by the 2nd modification of one Embodiment of this invention. It is a top view for demonstrating arrangement | positioning of the support plate and bracket of a printing apparatus by the 3rd modification of one Embodiment of this invention. It is a side view for demonstrating arrangement | positioning of the support plate and bracket of a printing apparatus by the 3rd modification of one Embodiment of this invention shown in FIG.

Explanation of symbols

71, 610, 810 Squeegee unit (printing unit)
73, 830, 930 Support members 100, 100a, 100b, 100c Printing apparatus 200 Printed circuit board (substrate)
300 Mask 614, 714, 717, 814, 817 Squeegee (scalar member)
721 Syringe (solder supply part)
722 Arm (arm member)
723, 823, 923 Bracket 726 Toggle clamp (first holding member)
729 Ball plunger (second holding member)
731a, 731b, 831a, 831b, 931a, 931b Main body 732, 932 Support plate

Claims (7)

A mask having a substrate disposed on the lower surface and having openings of a predetermined pattern;
A solder supply unit for supplying solder onto the mask;
A printing unit that prints a predetermined pattern of solder on the substrate through the mask by moving in a predetermined printing direction with a spatula member in contact with the mask supplied with solder; ,
The solder supply unit and the printing unit are configured to move integrally along the printing direction,
A printing apparatus, wherein at least one of the solder supply unit and the printing unit is configured to be movable from a printing position aligned along the printing direction to a predetermined retraction position. An arm member for supporting the solder supply unit;
The printing apparatus according to claim 1, wherein the solder supply unit is configured to move from the printing position to the retracted position when the arm member is rotated.   The position where the spatula member of the printing unit is arranged is more than the case where the solder supply unit and the arm member are located at the printing position when viewed from the printing direction when the arm member is rotated. The printing apparatus according to claim 2, wherein the printing apparatus is configured to move to the retreat position where the amount of overlap with the movement amount decreases.   The solder supply unit and the arm member move to the retracted position that does not overlap with the position where the spatula member of the printing unit is disposed when viewed from the printing direction when the arm member is rotated. The printing apparatus according to claim 3, configured as described above. A main body that can move linearly along the printing direction; and a support plate that has both ends fixed to the main body, and further includes a support member to which the printing unit is attached.
The arm member that supports the solder supply section is attached to either the main body section or the support plate via a bracket, and is configured to be rotatable with respect to the support member. 5. The printing apparatus according to any one of 4 above.   A first holding member that can be switched between a first holding state in which at least one of the solder supply unit and the printing unit is held in the printing position and a release state in which the solder supply unit and the printing unit are movable from the printing position; The printing apparatus of any one of Claims 1-5.   A second holding member capable of switching between a second holding state in which at least one of the solder supply unit and the printing unit is held in the retracted position and a release state in which the solder supply unit and the printing unit are movable from the retracted position; The printing apparatus of any one of Claims 1-6.

Images