JP5634743B2 - Screen printing machine - Google Patents

Description

  The present invention relates to a screen printer.

  Some screen printing machines have a printing machine main body, a substrate transport support device and a printing device held by the printing machine main body, as described in Patent Document 1 below.

JP 2007-15307 A

However, there is still room for improvement in conventional screen printers. For example, in front of the screen printing machine, a front space for performing normal operations and work that can be performed from the front is necessary, but in order to perform maintenance etc., a work space is also provided behind the screen printing machine. In this case, when installing a screen printing machine, it is necessary to secure the rear space in addition to the front space, and the required space becomes wider and the space efficiency is poor. There is an inconvenience.
The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide an improved screen printing machine that eliminates the above disadvantages.

In order to solve the above problems , (a) a substrate transport support device that transports a circuit board in the left-right direction and positions and supports the circuit board at a printing position; and (b) a screen on the circuit board supported by the substrate transport support device. In a screen printing machine including a printing apparatus that performs printing, and (c) a printing machine main body that holds the substrate conveyance support device and the printing apparatus, the main body and the support base of the printing machine main body are configured separately. In the screen printing machine according to the first aspect of the invention, on the premise that the main body portion is supported by the support base portion so as to be movable forward, a stopper device for defining the forward end position of the main body portion with respect to the support base portion is provided. In a state where the main body is moved to the advance end position defined by the stopper device with respect to the support base, the center of gravity of the main body is behind the front end of the portion of the support base that supports the main body. To be located in And (A) an anti-lifting device that prevents the main body from floating from the support base, and (B) provided at the front end of the main body, and when the main body moves relative to the support base, At least one of the wheel device having a wheel capable of rolling on the floor surface on which the screen printing machine is installed is provided.
In the screen printing machine according to the second invention, in addition to the above assumptions, (A) a feed screw held in the main body portion in a posture parallel to the front-rear direction and rotatably, and (B) rotating the feed screw. (C) a nut that is non-rotatably held on the support base and screwed with a feed screw, and the main body is attached to the support base as the handle rotates. A manual drive device that moves forward and backward in relation to the
A stopper device for defining a retracted end position of the main body with respect to the support base;
A power drive device comprising an actuator that operates by power, and retracts the main body portion with respect to the support base portion until the back motion is prevented by the stopper device based on the operating force of the actuator;
And a clearance is provided between the nut and the support base to allow relative movement over the stroke in which the main body is retracted by the power drive device without rotation of the feed screw. It is characterized by.

By moving the main body part forward with respect to the support base part, a space is obtained above the rear part of the support base part and behind the main body part, and the operator can perform work such as maintenance. .
The screen printing machine is usually operated from the front side, and it is essential to provide a working space in front of it. In addition, when the screen printer needs to work from the rear side, normally, the screen printer is in a state in which the rear surface thereof is close to a wall or other device. It cannot be installed in. On the other hand, in the screen printing machine having the above configuration, since the main body is moved forward with respect to the support base, a space is formed behind the main body, so that there is no work space on the rear surface side. It can be installed in. In other words, the front space can be used to perform work from the rear, and it is not necessary to secure work space both in front and rear of the screen printing machine, and productivity per unit space. And the effect of improving space efficiency is obtained.
Furthermore, in the screen printing machine according to the first invention, when the main body is pulled out, the main body is prevented from being tilted forward. In the screen printing machine according to the second invention, the operator can The main body can be easily moved and positioned reliably at the retracted end position.

Aspects of the Invention

  In the following, the invention recognized as being claimable in the present application (hereinafter referred to as “claimable invention” may be referred to as a subordinate concept invention of the present invention, a superordinate concept of the present invention, or a different concept). Some aspects of the invention may be included, and will be described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiment, the prior art, the common general technical knowledge, and the like. An aspect in which a constituent element is added and an aspect in which the constituent element is deleted from the aspect of each section can be an aspect of the claimable invention.

In each of the following items, the item (1) and the item (5) are combined, and further, limitations relating to “lifting prevention device” and “wheel device” correspond to claim 1, and (3) The claim is defined in claim 2, the limitation on the structure of the “lifting prevention device” is defined in claim 3, the claim (9) is claimed in claim 4, the claim (10) is claimed in claim 5, and the claim (11) is claimed. Item 6 corresponds to item (15).

(1) (a) A substrate transport support device that transports a circuit board in the left-right direction and positions and supports the circuit board at a printing position, and (b) a printing device that performs screen printing on the circuit board supported by the substrate transport support device. And (c) a screen printing machine including a printing machine body that holds the substrate transport support device and the printing device,
A screen printing machine characterized in that a main body part and a support base part of the printing machine main body are configured separately, and the main body part is supported by the support base part so as to be movable forward.
(2) The screen printing machine according to (1), wherein a resistance reduction device that reduces resistance of relative movement of the main body portion with respect to the support base portion is provided between the main body portion and the support base portion.
The main body can move lightly with respect to the support base, making it easy to move the main body, and avoiding damage caused by friction when the main body and the support base are moved relative to each other. Is obtained. It is also possible to provide a guide device that guides the movement of the main body portion relative to the support base, and the guide device can be a resistance reducing device.
(3) The resistance reducing device is
A first guide fixed to the support base in parallel in the front-rear direction; a first engagement block provided at a rear end portion of the main body and engaged with the first guide so as to be relatively movable in the front-rear direction; A first resistance reduction unit including:
A second guide fixed to the main body portion in parallel in the front-rear direction; and a second engagement block provided at a front end portion of the support base portion and engaged with the second guide so as to be relatively movable in the front-rear direction. The screen printer according to (2), further including a second resistance reducing unit.
The main body portion and the support base portion are guided by the engagement between the first and second engagement blocks and the first and second guides, and the relative positions can be kept stable before and after the movement. Further, the hardness of at least one of the first and second engagement blocks and the first and second guides is increased, the surface roughness is reduced and sufficient lubrication is performed, or the first and second engagement blocks are mounted. By having a rolling element such as a steel ball, the friction at the contact portion can be reduced. In addition, the front end portion and the rear end portion of the portion where the main body portion and the support base portion overlap each other in the state where the main body portion is moved most forward relative to the support base portion or the state where the main body portion is moved rearward most. The first and second engagement blocks engage with the first and second guides, so that the main body is most stably supported by the support base, and the first and second engagement blocks The maximum load acting on the first and second guides can be reduced, and the manufacturing cost can be reduced. The first and second resistance reducing portions can also be considered as the first and second guide portions.
(4) The screen printing machine according to any one of (1) to (3), further including a stopper device that defines a forward end position of the main body with respect to the support base.
It can prevent that a main-body part remove | deviates from a support stand part, or will be in the state inclined with respect to the support stand part.
(5) In a state where the main body portion is moved to the advance end position defined by the stopper device with respect to the support base portion, the center of gravity of the main body portion moves the main body portion of the support base portion. The screen printing machine according to item (4), wherein the screen printing machine is configured to be located behind the front end of the supporting portion.
Even when the main body is moved forward by the maximum stroke, the main body is stably supported by the support base.
(6) Further, the apparatus includes a lift prevention device that prevents at least a rear portion of the main body portion from floating upward from the support base portion, and the main body portion is defined by the stopper device with respect to the support base portion. In this state, the center of gravity of the main body portion and the support base portion is positioned behind the front end of the portion in contact with the floor surface of the support base portion. The screen printing machine according to item 4).
The maximum stroke to the front of the main body can be increased using the weight of the support base.
(7) Furthermore,
A feed screw held on the main body portion in a posture parallel to the front-rear direction and rotatably;
A handle that is rotated to rotate the feed screw;
A manual drive that includes a nut that is non-rotatably held by the support base and is screwed into the feed screw, and that causes the main body to move forward and backward with respect to the support base as the handle rotates. The screen printer according to any one of items (1) to (6), including an apparatus.
An operator can easily move the main body. In addition, the speed at which the handle can be rotated by the operator is limited, so the forward / backward speed of the main body is limited, and there is less impact when stopping in both forward and backward movements, and the support base is against the floor surface. The main body portion is prevented from being tilted forward alone or together with the support base portion due to the displacement or the rotational moment based on the inertial force.
(8) In addition, any one of the items (1) to (6), further including a power drive device that includes an actuator that is operated by power, and that moves the main body portion forward and backward with respect to the support base portion based on the operating force of the actuator A screen printing machine according to the above.
The power drive device is, for example, a device including an electric rotary motor, a feed screw, and a nut.
The main body is moved by power. If a sensor for detecting the forward end position and the backward end position of the main body is provided, and the actuator is controlled based on the detection result, the operator only has to operate an operation member that commands forward and backward movements. It is desirable to provide a stopper device that defines the forward end position and the backward end position.
(9) Furthermore,
(a) a feed screw held in the main body portion in a posture parallel to the front-rear direction and rotatably; (b) a handle that is rotated to rotate the feed screw; and (c) the support base. A manual driving device that includes a nut that is held in a non-rotatable manner and is screwed with the feed screw, and that causes the main body portion to move forward and backward with respect to the support base portion as the handle rotates.
A stopper device for defining a retreat end position of the main body portion with respect to the support base portion;
A power drive device including an actuator that operates by power, and retracts the main body portion with respect to the support base portion based on an actuation force of the actuator until the stopper device prevents retraction. A clearance is provided between the nut and the support base to allow relative movement over the stroke in which the main body is retracted by the power drive unit without rotation of the feed screw (1). Item 6. A screen printer according to any one of Items 6 to 6.
In addition to obtaining the effect of moving the main unit by the manual drive unit, the operation of the power drive unit has the effect of ensuring that the main unit is always positioned at the retracted end position without the operator being aware of it. It is done. Further, since the feed screw does not rotate and the handle does not rotate when the main body is moved backward by the power drive device, the operator does not feel uncomfortable because the handle rotates more than his own operation.
(10) Furthermore,
A movable member that supports at least a part of an apparatus disposed in the main body of the screen printing machine;
Any one of (1) to (9), including a movable member support device that movably supports the movable member between a storage position located in the main body and a maintenance position exposed to the rear of the main body. A screen printing machine according to the above.
It is possible to easily perform maintenance work or the like by placing the device in the main body on a movable member and pulling it out to the rear space obtained by moving the main body forward. In addition, it is possible to perform maintenance even if an apparatus is provided near the center in the front-rear direction of the main body, and the printing machine can be configured compactly by effectively using the space in the main body, and the space efficiency can be further improved. .
(11) The movable member support device is
A third guide provided in the main body portion in parallel in the front-rear direction;
A fourth guide which is held by the third guide so as to be relatively movable in the front-rear direction with respect to the third guide, and holds the movable member so as to be relatively movable in the front-rear direction;
A fourth guide moving device that moves the fourth guide in the backward direction with respect to the third guide by a stroke smaller than a pulling stroke of the movable member when the movable member is pulled out to the rear of the main body. The screen printing machine according to item 10).
Since the fourth guide moves backward with respect to the third guide while being guided by the third guide, and the movable member is supported by the fourth guide, the third guide is temporarily extended backward. Accordingly, the movable member can be stably supported by the main body portion while increasing the backward stroke of the movable member.
The interlocking type described in the next section is desirable as the fourth guide moving device, but it is not indispensable. For example, a stopper device is provided between the third guide and the fourth guide to define a relative movable amount of the fourth guide with respect to the third guide, and the fourth guide of the movable member is provided between the movable member and the fourth guide. It is also possible to provide a stopper device that regulates the amount of relative movement with respect to the first guide moving device.
(12) The fourth guide moving device is provided between the third guide, the fourth guide, and the movable member, and the pulling amount of the movable member is interlocked with the backward pulling of the movable member. The screen printing machine according to item (11), which is an interlocked fourth guide moving device that moves the fourth guide in a backward direction with respect to the third guide by half the amount.
The fourth guide moves about half the length of the third guide, and the movable member moves about half of the longitudinal dimension with respect to the fourth guide. Even in the maximum state, the fourth guide is stably held by the third guide, and the movable member is stably held by the fourth guide.
(13) At least one of the upstream side and the downstream side of the main body of the printing machine (a) The circuit board is transferred to and from the board transfer support device, and the transfer direction of the circuit board by the board transfer support device The screen printing according to any one of items (1) to (12), to which a shuttle conveyor including a movable conveyor that is movable in a direction orthogonal to (b) and a conveyor moving device that moves the movable conveyor is attached. Machine.
The shuttle conveyor can be used in various modes, and the usability of the screen printing machine can be improved. According to the screen printing machine described in this section, the printing machine body can be used as a support for the shuttle conveyor, and a dedicated support for installing the shuttle conveyor on the floor surface is not necessary. Further, it is easy to align the substrate conveyance support device and the movable conveyor in the height direction.
The features described in this section can be adopted independently of the features described in any of the paragraphs (1) to (12).
(14) The screen printer according to (13), wherein the shuttle conveyor is detachably attached.
If a shuttle conveyor is required, depending on the configuration of the screen printing machine and the type of the board work machine that performs the work on the board such as mounting of electronic circuit parts on the circuit board on which the printing agent is printed, it is necessary to install the shuttle conveyor. If necessary, it can be removed to shorten the line, and a screen printing machine with excellent flexibility can be obtained. In addition, the shuttle conveyor can be removed for the convenience of maintenance work on the apparatus in the main body.
(15) The screen printing machine according to (13) or (14), wherein the shuttle conveyor is attached to the main body and is movable forward with respect to the support base together with the main body.
Maintenance work for the shuttle conveyor is facilitated. Further, in the embodiment in which this item is subordinate to the item (14), the shuttle conveyor can be easily removed.
(16) The apparatus according to any one of (13) to (15), further including a heat exhaust device that discharges heat generated in the main body to the outside of the main body by discharging air in the main body to a lower space of the shuttle conveyor. A screen printing machine according to any one of the above.
When the air generated in the main body cannot be discharged backward, for example, even when a screen printing machine is provided along the wall surface, or when it is provided back to back with another device, the exhaust heat is favorably performed.
In the lower space of the shuttle conveyor, it is desirable to provide an air guide device such as an air guide plate and an air guide duct that guides the discharged air upward and suppresses the heated air from being blown to the adjacent device.
(17) The screen printing machine according to any one of (13) to (16), wherein auxiliary equipment of the device in the main body is disposed in a lower space of the shuttle conveyor.
By effectively using the space inside the shuttle conveyor, the screen printer can be configured compactly.
As the auxiliary machine, for example, at least one of a transformer, a vacuum generator and a pressurized air generator is suitable.

It is a perspective view which shows the electronic circuit assembly line provided with the screen printer which is one Embodiment. It is a side view which shows the said screen printer. It is a side view which shows the printing apparatus of the said screen printer, a mask holding | maintenance apparatus, etc. It is a top view which shows the board | substrate conveyance support apparatus and shuttle conveyor of the said screen printer. It is a side view which shows the printing machine main body of the said screen printing machine. It is a figure explaining the movement of the nut of a manual drive device at the time of drawing-out with respect to the support base part of the main-body part of the said printing press main body. It is a side view (partial cross section) which shows the wheel apparatus of the said screen printing machine, and a drawing-in apparatus. It is a side view which shows the state by which the said main-body part was pulled out from the support stand part, and the movable stand is located in a storage position. It is a side view which shows the state in which the said movable stand is located in a maintenance position. It is a side view which shows one side of the said movable stand and a movable stand support apparatus. It is a rear view (partial cross section) which shows two guides of the said movable stand support apparatus. It is a rear view which shows the state in which the said movable stand is guided by the roller provided in one of said two guides. It is a rear view which shows the said screen printer.

  Embodiments of the claimable invention will be described in detail below with reference to the drawings. In addition to the following embodiments, the claimable invention can be implemented in various modifications based on the knowledge of those skilled in the art, including the aspects described in the above [Aspect of the Invention] section. .

  FIG. 1 illustrates an electronic circuit assembly line including a screen printing machine according to an embodiment of the claimable invention. There are one or more electronic circuit assembly lines, a plurality of units in the present embodiment, for example, two screen printing machines 10 (hereinafter, abbreviated as the printing machine 10), one or more units, and a plurality of units in the present embodiment. For example, four electronic circuit component mounting machines 14 (hereinafter, abbreviated as mounting machines 14) are provided. The printing machine 10 and the mounting machine 14 are a kind of board-to-board work machines that perform work on circuit boards, and the electronic circuit assembly line is a kind of board-to-board work lines. The two printing machines 10 constitute a screen printing line, and are adjacent to the upstream side in the circuit board transport direction in the electronic circuit assembly line with respect to the four mounting machines 14, and parallel to the circuit board transport direction. Are arranged side by side. In the present embodiment, the left-right direction is the circuit board transport direction, and the direction orthogonal to the transport direction is the front-rear direction. In the present embodiment, the left-right direction and the front-rear direction are both horizontal. In addition, the electronic circuit assembly line is provided in a state in which the back surfaces of the printing machine 10 and the mounting machine 14 are along a wall surface (not shown).

The two printing machines 10 are configured in the same manner, and the upstream printing machine 10 will be described as a representative.
As shown in FIG. 2, the printing machine main body 18 includes a main body portion 20 and a support base portion 22 that are configured separately, and the main body portion 20 is supported by the support base portion 22 so as to be movable forward. The support base part 22 is installed on the floor surface 26 in the leg part 24 provided in the four corners.

  The main body portion 20 is formed by assembling a plurality of members, and includes a plurality of step portions, in this embodiment, an upper step portion 28, a middle step portion 30, and a lower step portion 32. As shown in FIG. 3, a mask holding device 34 and a printing device 36 are provided in the upper stage portion 28, and a substrate transfer support device 38 and a passing substrate transfer device 40 (see FIG. 4) are provided in the middle step portion 30. The mask holding device 34 holds the mask 44 placed on the mask support base 42 in a horizontal posture. The printing device 36 includes a pair of squeegees 46, a squeegee moving device 48 that moves the squeegees 46 in the front-rear direction along the mask 44, and a squeegee lifting device that lifts and lowers the pair of squeegees 46. 50 is included.

  As shown in FIG. 4, the substrate transport support device 38 is provided at the front of the middle stage 30, and includes a main conveyor 60, an in-conveyor 62 disposed on the upstream side of the main conveyor 60 in the transport direction, and a downstream side. And an out conveyor 64. The main conveyor 60 includes a conveyor device 66 and a substrate support device 68. In this embodiment, the conveyor device 66 is constituted by a belt conveyor, and includes a pair of conveyor belts 70 and a belt rotating device 72 that rotates the conveyor belts 70 respectively. Each of the pair of conveyor belts 70 is supported by the side frame 74 so as to be able to circulate, and is synchronously circulated by a belt circulator 72 using a circulator motor 76 as a drive source. Carry in the posture.

  The main conveyor 60 is provided with a stopper device (not shown), and the circuit board is stopped at a predetermined printing position and positioned. Further, the conveyance width of the circuit board of the conveyor device 66 is automatically changed by the conveyance width changing device 82. In the present embodiment, as schematically shown in FIG. 3, the substrate support device 68 includes a plurality of support pins 86 as a support member, a pin support base 88, and a support base elevating device 90, and the circuit board 92 is viewed from below. To support. In this embodiment, the substrate support device 68 constitutes a substrate clamping device in cooperation with the conveyor device 66, and the main conveyor 60 is lifted and lowered by a lifting device (not shown), whereby the circuit board 92 is masked 44. It is made to contact-separate with the lower surface of.

  Like the main conveyor 60, the in-conveyor 62 and the out-conveyor 64 are provided with a conveyor device 94 and a transfer width changing device 96 (see FIG. 4). Correspondence is shown and description is abbreviate | omitted.

  As shown in FIG. 4, the passing substrate transfer device 40 is provided at the rear portion of the middle stage portion 30, and includes a conveyor device 100 and a transfer width changing device 102, similar to the conveyors 62 and 64. The conveyor apparatus 100 is configured by a belt conveyor, is provided in parallel with the conveyors 62 and 64, and is provided from one end of the printing press 10 to the other end in the transport direction. In the passing substrate transfer device 40, the same reference numerals are given to the constituent elements that perform the same functions as the constituent elements of the conveyors 62 and 64, and the description thereof will be omitted.

  In the present printing machine 10, the main body 20 of the printing machine main body 18 is advanced and retracted in the front-rear direction with respect to the support base 22 by the operator operating the manual drive device 120. The resistance of relative movement is reduced by the resistance reducing device 122.

  As shown in FIG. 2, the resistance reduction device 122 includes a first resistance reduction unit 130 and a second resistance reduction unit 132. The resistance reducing portion 130 includes a pair of guides 134 provided on the support base portion 22 and a pair of engagement blocks 136 provided on the main body portion 20. The guide 134 has a rail shape, and is fixed in parallel to the front-rear direction at both ends of the rear surface of the support base 22 that are separated in the left-right direction. Further, the pair of engagement blocks 136 are fixedly provided at both end portions of the rear end portion of the lower surface of the main body portion 20 separated in the left-right direction.

  The resistance reducing unit 132 includes a pair of guides 138 provided on the main body unit 20 and a pair of engagement blocks 140 provided on the support base unit 22. The guide 138 has a rail shape, and is fixed to both ends of the front surface of the lower surface of the main body 20 that are separated from each other in the left-right direction. The engagement block 140 is a front end of the upper surface of the support base 22. Are fixed to both ends separated in the left-right direction.

  The engagement blocks 136 and 140 are fitted to the guides 134 and 138 so as to be relatively movable in the front-rear direction. In the present embodiment, the engagement blocks 136 and 140 each hold a plurality of steel balls (not shown) so as to be able to go around along the circumferential circuit, and a part of each of the steel balls causes a pair of guides 134 and 138 to be paired. Each side surface is engaged with a guide groove formed in a state extending in the front-rear direction, and not only supports the load of the main body 20, but also when an external force is applied to the main body 20 for any reason. 20 is prevented from floating from the support base 22. In the present embodiment, the plurality of steel balls and the guide grooves of the guides 134 and 138 constitute a floating prevention device. The structure of this lifting prevention device is well known, and illustration and description thereof are omitted.

  As shown in FIG. 5, the manual drive device 120 includes a feed screw 150, a handle 152, and a nut 154. The feed screw 150 is attached to the front side of the lower surface of the main body portion 20 in a posture parallel to the front-rear direction so as to be immovable and rotatable in the axial direction, and the front end portion reaches the front end portion of the main body portion 20 and the handle. 152 is attached.

  As shown in FIG. 5, the nut 154 is provided at the front portion of the support base 22, holds a plurality of steel balls and is screwed with the feed screw 150, and constitutes a ball screw mechanism together with the feed screw 150. . In the present embodiment, the nut 154 is provided with protrusions 156 and 158 at two locations separated from each other on the lower surface in the front-rear direction to form an engagement portion, and these protrusions 156 and 158 are supported by the support base. The nut 154 is provided in a state of being positioned before and after the engaging portion 160 provided in the portion 22. The engaging portion 160 is composed of a beam member in the left-right direction of the support base portion 22, and the interval between the protrusions 156 and 158 is longer than the length in the front-rear direction of the engaging portion 160, and as shown in FIG. A play in the front-rear direction is provided between the support base 22 and the support base 22.

  The gap in the vertical direction between the nut 154 and the engaging portion 160 is made small, thereby preventing the nut 154 from rotating around the axis parallel to the front-rear direction with respect to the support base portion 22. Further, the nut 154 is prevented from moving with respect to the support base portion 22 by engaging one of the protrusions 156 and 158 with the engaging portion 160, and the handle 152 is rotated in this state, whereby the feed screw 150. Is rotated in the axial direction, and the main body 20 is moved forward and backward relative to the support base 22. The reason for providing a play will be described later. A pair of engaging portions may be provided on the support base portion, and an engaging portion that alternatively engages with the pair of engaging portions may be provided on the nut.

  The forward end position and the backward end position of the main body part 20 with respect to the support base part 22 are defined by a stopper device 164 shown in FIG. In the present embodiment, the stopper device 164 includes a protruding body-shaped stopper portion 166 protruding downward from the lower surface of the main body portion 20 and a protruding portion protruding upward from the upper surface of the support base portion 22. And a pair of support base side stopper portions 168 and 170 in the form of a ring. The support base side stopper portions 168 and 170 are provided at a distance in the front-rear direction, and the forward end position of the main body portion 20 is defined by contact with the front support base side stopper portion 168 of the main body side stopper portion 166. The retracted end position is defined by contact with the rear support base portion side stopper portion 170.

  In the present embodiment, the front support base portion side stopper portion 168 has the center of gravity of the main body portion 20 in the state where the main body portion 20 is moved to the forward end position with respect to the support base portion 22. It is provided in the position located behind the front end of the part which supports the main-body part 20. Further, as shown in FIG. 7, the rear support base portion side stopper portion 170 is provided at a position where the entire main body portion 20 is drawn onto the support base portion 22 as a retracted end position.

  In the present embodiment, as shown in FIG. 7, a retracting device 180 as a power drive device is provided, and the main body 20 is automatically positioned at the retracted end position. The retractor 180 uses an air cylinder 182 as a drive source. The air cylinder is a kind of fluid pressure cylinder as a fluid pressure actuator, and operates with compressed air as power. In this embodiment, the air cylinder 182 is a single-acting cylinder in which a piston is urged in a backward direction by an elastic member (not shown), and one end portion of the cylinder housing 184 is rotatably attached to the support base portion 22. A lever 188 as an engaging member is attached to the tip of the rod 186. The lever 188 is pivotally attached to the support base 22, and an arm 190 that extends from the pivot axis is pivotally connected to the piston rod 186. Further, a roller 194 is rotatably attached to the tip of another arm part 192 that extends from the rotation axis of the lever 188 to the opposite side of the arm part 190, and a rotation engaging part that is an engaging part. Is configured.

  As shown in FIG. 7, an engaging protrusion 196 is provided at the lower end of the main body 20 to form an engaged part. The lever 188 is rotated by the expansion and contraction of the piston rod 186, and as indicated by the solid line, the roller 194 is positioned below the moving path of the engaging protrusion 196 and a retracted position that allows its advancement and retraction, and a two-dot chain line. As shown, the roller 194 is caused to enter the movement path, and is moved to an operating position where the roller 194 engages with the engagement protrusion 196 and moves the main body 20 backward. The retracting device 180, the engaging protrusion 196, and the stopper device 164 are provided at different positions in the left-right direction.

  The air cylinder 182 is operated based on the output signal of the sensor 200 (see FIG. 1) provided on the support base 22, and the operation is released based on the output signal of the sensor 202 (see FIGS. 1 and 6). The The sensors 200 and 202 are configured by, for example, a transmissive photoelectric sensor that is a photoelectric sensor that is a kind of a non-contact sensor, and outputs different signals depending on whether or not the light receiving unit receives light. In the present embodiment, the sensor 200 is prevented from receiving light by the light receiving portion by the main body side stopper portion 166, the signal changes from ON to OFF, and compressed air is supplied to the air cylinder 182 based on the change, and the lever 188 Is rotated to the operating position. Therefore, the sensor 200 and the engaging protrusion 196 are configured so that the roller 194 is engaged with the engaging protrusion in a state where the distance between the main body side stopper 166 and the rear support base side stopper 170 is shorter than the operation stroke of the roller 194. It is provided at a position where it can be engaged with the front end surface of the portion 196, press the main body portion 20 backward, and keep pressing even when it is positioned at the retracted end position. The main body side stopper 166 is provided with a protrusion 204 extending forward from its front end, and constitutes a detected part together with the main body side stopper 166, and the main body 20 is moved to the retracted end position. Even in this state, light reception by the light receiving unit is hindered. Therefore, the operation of the air cylinder 182 keeps the main body portion 20 at the retracted end position.

  The sensor 202 is provided on the support base 22 at a position where the output signal changes according to the size of the clearance between the protrusion 158 on the rear side of the nut 154 and the engaging portion 160. In the state where the main body portion 20 is positioned at the retracted end position, there is a gap between the protrusions 156 and 158 and the engaging portion 160 as shown in FIG. 6 (a). When the nut 20 is pulled out from the support base 22, the nut 154 moves rearward with respect to the feed screw 150, and the protrusion 156 engages with the engagement part 160. The gap becomes larger and becomes the maximum as shown in FIG. Therefore, in the sensor 202, when the main body 20 is positioned at the retracted end position, and the gap is shorter than the maximum, the light reception of the light receiving unit is hindered and an OFF signal is output. It is provided at a position where it enters a light receiving state and outputs an ON signal.

  Based on the change of the output signal of the sensor 202 from OFF to ON, the air chamber of the air cylinder 182 is opened to the atmosphere, the lever 188 is rotated to the retracted position, and the main body 20 is allowed to advance relative to the support base 22. Is done. In the present embodiment, the sensor 202 constitutes a release command device that commands the operation release of the retracting device 180. The release command device may be configured by a switch operated by an operator. The operator operates the switch prior to the pulling operation from the support base portion 22 of the main body portion 20 and inputs an operation release to the control device so that the air chamber of the air cylinder 182 is opened to the atmosphere.

  The main body 20 is provided with a wheel device 208 as shown in FIG. The wheel device 208 includes a wheel 210 and a wheel holder 212, and is attached to the lower surface 216 of the front end portion of the bottom wall 214 of the main body portion 22. The wheel holder 212 rotatably holds the wheel 210 and is urged in a direction away from the main body 20 by a compression coil spring 218 that is an elastic member disposed between the wheel holder 212 and the bottom wall 214. One or more springs 218 are provided, for example, three, for example, three in this embodiment. Two of the three springs 218 are fitted to the outside of the guide rod 220 that guides the lifting and lowering of the wheel holder 212. The guide rod 220 has a rod shape, protrudes on the wheel holding body 212, and penetrates the bottom wall 214 so as to be relatively movable in the vertical direction. The limit of separation between the main body 20 and the wheel holder 212 due to the urging of the spring 218 is defined by the engagement portion 222 provided at the upper end portion of the guide rod 220 engaging the upper surface of the bottom wall 214. The spring 218 is preloaded. In the present embodiment, the engaging portion 222 is provided so that the wheel 210 is slightly separated from the floor surface 26 in a state where the engaging portion 222 is engaged with the bottom wall 214. The elastic member may be provided between the wheel and the wheel holding body instead of or in addition to being provided between the wheel holding body and the main body.

  As shown in FIG. 8, a movable table 240 that is a movable member and a movable table support device 242 that is a movable member support device are provided in the lower stage portion 32 of the main body unit 20. As shown in FIG. 10, the movable table support device 242 includes a pair of guides 244 provided in the lower part of the lower step portion 32 in parallel in the front-rear direction, and another pair of guides 246 held by the guides 244. , And an interlocked guide moving device 248 that moves the guide 246 in the backward direction with respect to the guide 244. FIG. 8 shows one of the guides 244 and 246. The pair of guides 244 have a longitudinal shape and are provided to be separated from each other in the left-right direction. As shown in FIG. 11, a side plate portion 252 fixed to the lower step portion 32 in a vertical posture, and a side plate portion The rail part 254 extended right-angled from the lower end part of 252 and the engaging part 256 extended from the upper end part of the side-plate part 252 are included.

  The pair of guides 246 have a longitudinal shape, and as shown in FIG. 12, one side guide portion 246 has a side plate portion 258 provided vertically, a rib 260 protruding perpendicularly from the lower end portion of the side plate portion 258, and a cross-sectional shape. Is formed in an L shape, and includes a holding portion 262 protruding from the upper end portion of the side plate portion 258. As shown in FIG. 10, two rollers 264 are attached to the rear side of the lower portion of the side plate portion 258 so as to be rotatable at a distance in the front-rear direction. The lower portions of these rollers 264 are projected below the ribs 260 through openings 266 provided in the ribs 260, and are placed on the rail portions 254 of the guides 244 so that they can roll. The guides 246 are guides. 244 is held so as to be relatively movable in the front-rear direction. The movement of the guide 246 relative to the guide 244 is such that a stopper portion 270 provided projecting downward from the rib 260 is fitted into a notch 272 formed in the rail portion 254 so as to extend in the front-rear direction, and the front end surface of the notch 272 274, defined by contacting the rear end surface 276. The stopper portion 270 and the end surfaces 274 and 276 constitute a stopper device 278 so that the amount of movement of the guide 246 relative to the guide 244 is approximately half the length of the guide 246.

  As shown in FIG. 10, a roller 280 is rotatably attached to the side plate portion 258 at the upper portion of the front end portion thereof. The roller 280 is fitted in a groove 281 provided in the engaging portion 256 of the guide 244. Further, a roller 282 is rotatably attached to a lower portion of the rear end portion of the side plate portion 258, and a roller 284 is rotatably held at a middle portion in the front-rear direction of the holding portion 262 so as to be relatively movable in the front-rear direction. . The movement of the roller 284 is defined by a stopper portion (not shown) provided in the holding portion 262 and moves between the two rollers 264.

  The movable base 240 is provided with rails 290 on both side surfaces separated in the left-right direction (one rail 290 is shown in FIG. 10). The rail 290 is long in the front-rear direction, and is placed and supported on rollers 264 and 282 of the guide 246 as shown in FIGS. Protrusions 292 and 294 are provided at the rear end of the rail 290 and at a portion spaced forward from the rear end, respectively, and abut against the protrusion 296 provided on the side plate 258. The forward end position and the backward end position of the movable base 240 with respect to the guide 246 are defined. The protrusions 292, 294, and 296 constitute an engaging portion, constitute a stopper device 298, and the amount of movement of the movable base 240 relative to the guide 246 is set to be approximately half of the dimension in the front-rear direction of the movable base 240. Yes. In the present embodiment, the rollers 264 and 282 and the stopper devices 278 and 298 constituting the rotation support constitute the interlocking type guide moving device 248.

  On the movable table 240, a device that constitutes the printing press 10, for example, a type of electrical component, and a control device 300 that controls the printing press 10 is mounted. The control device 300 is mainly composed of a computer, and controls drive sources and the like of various devices constituting the printing press 10. Most of the motors constituting the drive source in the printing press 10 are a kind of electric motors, and are constituted by servo motors that are rotary electric motors capable of accurately controlling the rotation angle. You may comprise with a linear motor. The control device 300 is controlled in an integrated manner by an overall control device 302 (see FIG. 1) that controls the entire electronic circuit assembly line. The overall control device 302 is mainly composed of a computer.

  As shown in FIGS. 4 and 13, a shuttle conveyor 310 is attached to the printing machine 10 on the downstream side of the main body 20. The shuttle conveyor 310 includes a conveyor body 312, a movable conveyor 314, and a conveyor moving device 316. As shown in FIG. 2, the conveyor main body 312 has a frame shape in which a plurality of members are assembled, and is divided into a plurality of step portions, for example, an upper step portion 318 and a lower step portion 320. The conveyor main body 312 is fixed to the downstream side surface of the main body portion 20 by a plurality of bolts (not shown), and can be removed from the main body portion 20 by loosening the bolts. As shown in FIG. 13, the shuttle conveyor 310 is attached to the main body unit 20 in a state of floating from the floor surface 26.

  The movable conveyor 314 is provided in the upper stage 318 and includes a conveyor device 326 and a conveyance width changing device 328 as shown in FIG. The conveyor device 326 is configured in the same manner as the conveyor device 94 of the conveyors 62 and 64, and includes a conveyor belt 332 supported by a pair of side frames 330 and a rotation motor 334 as a driving source, and a pair of conveyor belts. Belt circulator 336 for rotating 332 respectively.

  As shown in FIG. 4, the conveyor moving device 316 includes a shuttle motor 342 as a driving source, a belt 344, and a plurality of pulleys 346. The belt 344 is a timing belt, and the pulley 346 is a timing pulley. One of the plurality of pulleys 346 is rotated by the shuttle motor 342 and the belt 344 is moved. Accordingly, the pair of side frames 330 are moved together with the conveyance width changing device 328 while being guided by the guide device 350 including the pair of guide rods 348. The movable conveyor 314 is moved to an arbitrary position in the front-rear direction, and is moved to a position connected to the conveyor for delivering the circuit board on the upstream side or the downstream side, as illustrated by the one-dot chain line and the two-dot chain line in FIG. It is done. The shuttle conveyor 310 is controlled by the control device 300.

  As shown in FIG. 13, a plurality of floor materials 360 are attached to the lower stage portion 320 of the conveyor main body 312, and the auxiliary machine in the main body portion 20 is added to the lower space 362 that is a space in the lower stage portion 320. Is provided with a transformer 364. The printing machine main body 18 and the conveyor main body 312 are respectively covered with housings 366 and 368 as shown in FIG. Each of the housings 366 and 368 is provided with openings necessary for delivery of the circuit board on the downstream side and the upstream side of the printing press 10, and a lower space 370 that is a space in the lower stage portion 32 and a lower space 362 of the shuttle conveyor 310. Can be used by placing the auxiliary machine of the printing machine 10 in the shuttle conveyor 310. As shown in FIG. 1, an opening 372 is formed in the front surface of the housing 366, and an operator puts his hand through the opening 372 and operates the handle 152.

  Further, as shown in FIG. 13, a fan 376 that is a kind of a heat exhausting device is attached to an upper portion of a portion adjacent to the shuttle conveyor 310 of the lower stage portion 32 of the main body portion 20. The fan 376 is provided to discharge the heat generated in the main body 20 to the outside of the main body 20, and in this embodiment, to the lower space 362 of the shuttle conveyor 310 attached to the main body 20. A wind guide plate 378 is attached to the lower space 362. The wind guide plate 378 is attached to the upper part of the lower space 362 so as to be inclined toward the main body 20 toward the lower side, so that interference with an auxiliary machine placed in the lower space 362 is avoided and the fan The air discharged by 376 is guided upward, and is discharged outside through an exhaust port formed in the ceiling portion of the housing 368. Thereby, hot air exhausted from the main body 20 is prevented from being blown to the downstream printing press 10 or the mounting device 14 or from colliding with exhaust from an adjacent apparatus.

  In the present embodiment, the four mounting machines 14 are configured in the same manner as the electronic circuit component mounting machine described in Japanese Patent Application Laid-Open No. 2004-104075, and are modularized. As shown in FIG. Each of which includes a mounting machine main body 390, a substrate transfer device 392, a substrate support device 394, a component supply device 396, a component mounting device 398, a control device 400, and the like, and is responsible for mounting electronic circuit components on a single circuit board. , In parallel. The substrate transfer device 392 includes a pair of conveyors 402. These conveyors 402 are provided in parallel in the front-rear direction of the mounting machine body 390. The conveyor 402 is constituted by a belt conveyor in the present embodiment, and the conveyance width is automatically adjusted by a conveyance width changing device (not shown). A substrate support device 394 is provided for each of the two conveyors 402, and a circuit board conveyed by any of the conveyors 402 is supported by the substrate support device 394, and mounting of electronic circuit components is performed. The control device 400 is mainly composed of a computer, and is controlled by the overall control device 302 in an integrated manner.

  In the electronic circuit assembly line configured as described above, the printing agent on the circuit board is printed in parallel in the two printing machines 10, and in this embodiment, the cream solder (hereinafter abbreviated as solder) is printed. Is done. Of the two printing machines 10, the circuit board on which the solder is printed in the upstream printing machine 10 is supplied to the board conveyance support device 38 and carried into the main conveyor 60 from the in-conveyor 62. The circuit board is supported by the board support device 68 and brought into contact with the mask 44, and solder is printed by the printing device 36. After printing, the circuit board is carried out to the out conveyor 64 and transferred from the out conveyor 64 to the movable conveyor 314 of the shuttle conveyor 310. Then, it is carried from the movable conveyor 314 to the passing substrate transport device 40 of the downstream printing machine 10 and passes through the printing machine 10, and is moved by the shuttle conveyor 310 of the downstream printing machine 10 to the rear conveyor 402 of the mounting machine 14. The electronic circuit components are mounted.

  Further, the circuit board on which the solder is printed in the downstream printing machine 10 is supplied to the passing board conveying device 40 of the upstream printing machine 10, passed through the upstream printing machine 10, and downstream by the shuttle conveyor 310. It is carried in the board | substrate conveyance support apparatus 38 of the printing machine 10 of the side, and a solder is printed. And it is carried in to the conveyor 402 of the front side of the mounting machine 14 by the shuttle conveyor 310, and an electronic circuit component is mounted | worn.

  In the printing press 10, as shown in FIG. 2, the main body 20 is normally drawn on the support base 22 and is maintained in a position at the retracted end position by the operation of the drawing device 180. Further, as shown in FIG. 6A, there is a gap between the protrusions 156 and 158 of the nut 154 and the engagement portion 160 of the support base 22. Therefore, when the operator pulls out the main body portion 20 from the support base portion 22 for maintenance or the like, the handle 152 is rotated, but initially the feed screw 150 does not move, and the nut 154 does not move relative to the feed screw 150. As shown in FIG. 6 (b), the front protrusion 156 is engaged with the engagement portion 160. For this reason, the gap between the protrusion 158 and the engagement portion 160 is increased, the signal of the sensor 202 is changed from OFF to ON, and it is detected that the main body portion 20 is pulled out. Then, the lever 188 is rotated to the retracted position to allow the main body portion 20 to be pulled out, and the handle 152 is rotated to advance the feed screw 150. As a result, as shown in FIG. 20 is pulled out of the support base 22 together with the housing 366. The shuttle conveyor 310 is also pulled out together with the main body 20 and is moved forward with respect to the support base 22.

  The drawer is guided by the guides 134 and 138 and the engagement blocks 136 and 140, and the movement resistance is reduced. The operator can pull out the main body 20 to the forward end position, but the engagement block 136 is provided at the rear end of the main body 20, the engagement block 140 is provided at the front end of the support base 22, Correspondingly, guides 134 and 138 are provided on the support base 22 and the main body 22, respectively. Therefore, the main body 20 is supported by the support base 22 regardless of the amount of pull-out from the support base 22. The overlapping part is always supported at the four corners and is supported stably.

  The floor surface 26 is flat, and the wheel 210 is slightly separated from the floor surface 26 in principle both when the main body portion 20 is pulled out and when it is retracted, but the main body portion 20 is pulled out from the support base portion 22. When a downward force is applied to the main body portion 20 and the main body portion 20 is slightly tilted, it touches the floor surface 26 to prevent further tilting. If the wheel 210 is in contact with the floor surface 26 because the floor surface 26 is not flat, the spring 218 is compressed, the wheel 210 rolls on the floor surface 26, and the main body 20 is horizontal. It is allowed to move forward and backward while maintaining the posture. Thus, in a state where the wheel 210 is in contact with the floor surface 26, the elastic member transmits at least a part of the weight of the main body 20 to the wheel 210.

  When returning the main body 20 to the support base 22, the operator rotates the handle 152 in the direction opposite to that when the handle 152 is pulled out. At the beginning of the operation, the feed screw 150 does not move in the axial direction, the nut 154 is moved forward with respect to the feed screw 150, and as shown in FIG. 160 is engaged. When the handle 152 is further rotated from this state, the feed screw 150 is retracted, and the main body portion 20 is pulled together with the housing 366 onto the support base portion 22. Although the detection signal of the sensor 202 changes from ON to OFF due to the movement of the nut 154, this change is ignored by the control device 300 and is not used.

  When the main body side stopper protrusion 166 is detected by the sensor 200, the air cylinder 182 is operated, the lever 188 is rotated to the operating position, and the main body 20 is automatically moved to the retracted end position. At this time, as shown in FIG. 6C, the nut 154 is moved rearward together with the feed screw 150 because there is a gap between the protrusion 156 and the engaging portion 160. For this reason, the feed screw 150 is not rotated but merely retracts, and the handle 152 is not rotated. The clearance between the nut 154 and the engaging portion 160 is larger than the stroke by which the retracting device 180 retracts the main body portion 20 to the retracted end position, and the retraction of the main body portion 20 by the retracting device 180 is caused by the feed screw 150. Allowed without rotation. The shuttle conveyor 310 is also retracted along with the drawing of the main body 20 and returned to a position aligned with the support base 20.

  In the printing press 10, the movable table 240 is always located at the storage position shown in FIG. When the main body portion 20 is pulled out from the support base portion 22, an empty space is obtained above the rear portion of the support base portion 22. Therefore, as shown in FIG. 9, the operator can perform maintenance on the control device 300 by pulling the movable table 240 to the maintenance position exposed to the rear of the main body 20. Since the shuttle conveyor 310 is also moved to the front of the support base 22 together with the main body 20, an empty space is obtained behind the shuttle conveyor 310, and the operator is not prevented from entering the rear space of the main body 20.

  The movable table 240 rotates the rollers 264 and 282 when pulled out from the main body 20. Thereby, the movable base 240 is moved lightly, the roller 264 rolls on the rail portion 254, and the guide 246 is moved rearward with respect to the guide 244. The peripheral speed of the top of the roller 264 at the time of rolling is twice that of the rotation axis, and the moving distance of the guide 246 that is moved by the rolling of the roller 264 is that the rail 290 is mounted on the top surface of the roller 264. The guide 246 is moved in the backward direction with respect to the guide 244 by an amount that is half of the pull-out amount of the movable table 240. Therefore, even when the movable base 240 and the guide 246 are moved to the retracted end position as shown in FIG. Retained. Further, when the roller 284 of the guide 246 sandwiches the rail 290 with the roller 264, the backward tilt of the movable table 240 is prevented. Further, when the roller 280 engages with the engaging portion 256 of the guide 244, the backward inclination of the guide 246 is prevented.

  When moving the movable table 240 to the storage position, the operator pushes the movable table 240 and moves it into the main body 20. Also in this case, the movable base 240 is moved forward by the rotation of the rollers 264 and 282, and the guide 246 is moved forward relative to the guide 244 by the rolling of the roller 264 and stored in the guide 244.

In addition, since a space is obtained behind the main body portion by pulling out the main body portion from the support base portion, the printing press can be disposed back to back with another device. The other apparatus may be a printing machine, a mounting machine, an adhesive application machine, a board inspection machine, or the like, and may be a substrate working machine other than the printing machine, or may be an apparatus other than the board working machine. For example, two sets of lines similar to the electronic circuit assembly line shown in FIG. 1 may be arranged symmetrically so that the printers and the mounting machines are back to back, or two sets of electronic circuit assemblies The line may be provided with a phase rotated by 180 degrees so that the printing machine and the mounting machine are back to back. Providing an electronic circuit assembly line in this way provides the effect of improving productivity.
The electronic circuit assembly line may be a line including one printer.

  In addition, if at least one of the wheel device and the lift prevention device is provided in the printing press, the main body portion is moved to the forward end position defined by the stopper device with respect to the support base portion, and The center of gravity can be positioned in front of the front end of the portion of the support base that supports the main body, and the maximum stroke to the front of the main body can be increased. When only the wheel device is provided, the wheel is always provided so as to contact the floor surface. When only the lifting prevention device is provided, the center of gravity of the combination of the main body portion and the support base portion is positioned behind the front end of the portion in contact with the floor surface of the support base portion. When both devices are installed, the wheels are in principle arranged slightly away from the floor. In special cases, for example, if there is a gap between the components of the anti-lifting device, the wheels should be grounded and If the inclination is prevented or there is a convex part on the floor surface, the body member is overcome while maintaining the posture of the main body member by the elastic deformation of the elastic member.

  Further, the printing machine may not have a passage substrate transfer device. In such a printing machine, a shuttle conveyor is provided as necessary. For example, the shuttle conveyor is provided when a device to which a circuit board on which a printing material is printed is provided with a plurality of substrate transfer devices arranged in parallel. It is done.

  DESCRIPTION OF SYMBOLS 10: Screen printer 18: Printer main body 20: Main-body part 22: Support stand part 120: Manual drive device 122: Resistance reduction device 240: Movable stand 242: Movable stand support device 310: Shuttle conveyor

Claims (7)

(a) a substrate transport support device that transports the circuit board in the left-right direction and positions and supports the printed circuit board; and (b) a printing device that performs screen printing on the circuit board supported by the substrate transport support device; c) viewing including the printer body for holding the those substrate transfer support apparatus printing apparatus, the main body of the printing machine body and the support section is configured separately, the main body portion to the forward support section A screen printing machine supported movably ,
Including a stopper device for defining a forward end position of the main body portion with respect to the support base portion, wherein the main body portion is moved to the forward end position defined by the stopper device with respect to the support base portion; The center of gravity of the main body is configured to be located behind the front end of the portion of the support base that supports the main body,
Further, (A) a lifting prevention device for preventing the main body from floating upward from the support base, and (B) provided at the front end of the main body, the movement of the main body with respect to the support base In particular, a screen printing machine provided with at least one of a wheel device having wheels capable of rolling on the floor surface on which the screen printing machine is installed. Between the main body and the support base,
A first guide fixed to the support base in parallel in the front-rear direction; a first engagement block provided at a rear end portion of the main body and engaged with the first guide so as to be relatively movable in the front-rear direction; A first resistance reduction unit including:
A second guide fixed to the main body portion in parallel in the front-rear direction; and a second engagement block provided at a front end portion of the support base portion and engaged with the second guide so as to be relatively movable in the front-rear direction. Including a second resistance reduction unit,
The screen printing machine according to claim 1, further comprising a resistance reducing device that reduces resistance of relative movement of the main body with respect to the support base. The screen printing machine includes the lifting prevention device, and the lifting prevention device includes an engagement structure between the first guide and the first engagement block, the second guide, and the second engagement block. The screen printing machine according to claim 2, comprising: (a) a substrate transport support device that transports the circuit board in the left-right direction and positions and supports the printed circuit board; and (b) a printing device that performs screen printing on the circuit board supported by the substrate transport support device; c) A printing press main body that holds the substrate transport support device and the printing device. The main body portion and the support base portion of the printing press main body are configured separately, and the main body portion moves forward to the support base portion. A screen printing machine supported in a possible manner,
(A) a feed screw that is rotatably held in a posture parallel to the front-rear direction on the main body, (B) a handle that is rotated to rotate the feed screw, and (C) the support base A manual driving device that includes a nut that is held in a non-rotatable manner and is screwed with the feed screw, and that causes the main body portion to move forward and backward with respect to the support base portion as the handle rotates.
A stopper device for defining a retreat end position of the main body portion with respect to the support base portion;
A power drive device including an actuator that operates by power, and retracts the main body portion with respect to the support base portion based on an actuation force of the actuator until the stopper device prevents retraction. between the nut and the support section, said body portion relative movement or stroke is retracted by the power drive unit, the rotational scan screen printing tolerated clearance is provided without the feed screw Machine. further,
A movable member that supports at least a part of an apparatus disposed in the main body of the screen printing machine;
5. The movable member support device according to claim 1, further comprising: a movable member supporting device that movably supports the movable member between a storage position located in the main body portion and a maintenance position exposed to the rear of the main body portion. Screen printing machine. The movable member supporting device is
A third guide provided in the main body portion in parallel in the front-rear direction;
A fourth guide which is held by the third guide so as to be relatively movable in the front-rear direction with respect to the third guide, and holds the movable member so as to be relatively movable in the front-rear direction;
And a fourth guide moving device that moves the fourth guide in a backward direction with respect to the third guide by a stroke smaller than a drawing stroke of the movable member when the movable member is pulled out rearward of the main body. Item 6. A screen printing machine according to Item 5.   At least one of the upstream side and the downstream side of the main body of the printing machine main body, (a) the circuit board is transferred to and from the substrate transfer support device, and the circuit board is transferred by the substrate transfer support device. A shuttle conveyor including a movable conveyor movable in a direction orthogonal to the direction and (b) a conveyor moving device for moving the movable conveyor is attached, and can be moved forward with respect to the support base together with the main body. A screen printing machine according to any one of claims 1 to 6.

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