JP6989936B2 - Work operation device, work operation method, curved surface jig, curved surface jig manufacturing method and screen printing device - Google Patents

Description

The present invention relates to, for example, the operation or printing of a workpiece having a curved surface.

Conventionally, a device for printing on a workpiece having a curved surface has been considered.

Japanese Unexamined Patent Publication No. 6-31895 Japanese Unexamined Patent Publication No. 11-320820

The present invention provides an apparatus and a method capable of operating or printing a workpiece having a curved surface with a configuration different from the conventional one.

The work operation device of the present invention is a work operation device that operates a work in order to work in the front-rear direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved surface jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin in either a linear direction or a curved direction.
It is provided with a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.

According to the present invention, the working portion of the work having a curved surface can be held horizontally.

The side view of the screen printing apparatus 100 in Embodiment 1. FIG. The front view of the screen printing apparatus 100 in Embodiment 1. FIG. The plan view of the screen printing apparatus 100 in Embodiment 1. The operation explanatory drawing of the work operation method of the screen printing apparatus 100 in Embodiment 1. FIG. The figure of the printing start of the screen printing apparatus 100 in Embodiment 1. FIG. The explanatory view of the positional relationship in Embodiment 1. The operation principle diagram of the work operation method in Embodiment 1. FIG. Another block diagram of the curved surface jig 41 in the second embodiment. The block diagram of the curved surface jig 41 and the suction mechanism 10 in Embodiment 3. FIG. The block diagram of the curved surface jig 41 in Embodiment 4. FIG. The side view of the screen printing apparatus 100 in Embodiment 5. The front view of the screen printing apparatus 100 in Embodiment 5. The plan view of the screen printing apparatus 100 in Embodiment 5. The explanatory view of the pin holding part 130 in Embodiment 5. The explanatory view of the pin holding part 130 in Embodiment 6. The block diagram of the curved surface jig 41 in Embodiment 7. The partial block diagram of the curved surface jig 41 in Embodiment 7. FIG. 7 is a plan view and a sectional view of the suction plate 160 according to the seventh embodiment. The figure which shows the manufacturing method of the curved surface jig 41 in Embodiment 7. The block diagram of the curved surface jig 41 in another structure. The block diagram of the curved surface jig 41, the screen 96, and the squeegee 92 in another configuration. A detailed side view of the screen printing apparatus 100 according to the eighth embodiment. A detailed front view of the screen printing apparatus 100 according to the eighth embodiment. A detailed partial plan view of the screen printing apparatus 100 according to the eighth embodiment. The detailed partial front view of the screen printing apparatus 100 in Embodiment 8. 8 is a side view of the pin holding portion 130 of the screen printing apparatus 100 according to the eighth embodiment. 8 is a side view of the brake mechanism 260 of the screen printing device 100 according to the eighth embodiment. The front view of the screen printing apparatus 100 in Embodiment 8. The plan view of the screen printing apparatus 100 in Embodiment 8. The operation flow diagram of the work operation method of the screen printing apparatus 100 in Embodiment 8. FIG. The operation explanatory drawing of the printing start position of the screen printing apparatus 100 in Embodiment 8. FIG. The operation explanatory drawing of the printing start position of the screen printing apparatus 100 in Embodiment 8. FIG. The operation explanatory drawing at the time of printing start of the screen printing apparatus 100 in Embodiment 8. FIG. The operation explanatory drawing of the printing intermediate point of the screen printing apparatus 100 in Embodiment 8. FIG. The operation explanatory drawing at the time of printing completion of the screen printing apparatus 100 in Embodiment 8. FIG. The side view of the other anti-slip mechanism 205 of the screen printing apparatus 100 in Embodiment 8. The front view of the other anti-slip mechanism 205 of the screen printing apparatus 100 in Embodiment 8. 8 is a plan view of another anti-slip mechanism 205 of the screen printing device 100 according to the eighth embodiment.

Embodiment 1.
*** Explanation of configuration ***
The configuration of the screen printing device 100 using the work operation device 200 will be described with reference to FIGS. 1, 2, and 3.
The screen printing device 100 of FIGS. 1, 2, and 3 is a device that operates a work 49 having a curved surface with a curved surface jig 41 to perform screen printing by screen plate making.
In the figure, the direction in which the curved surface jig 41 and the work 49 are carried in and out of the printing position is referred to as a front-back lateral direction. The printing direction is the front horizontal direction.
The height direction is called the vertical direction. Further, as shown in FIG. 2, both side directions of the curved surface jig 41 and the work 49 are referred to as left-right directions.
The work operation device 200 is a device for operating the work in order to work in the front-rear direction with respect to the work having a curved surface. In the first embodiment, the screen printing device 100 is removed from the printing unit 90 described below. Is.
In FIG. 1, the work 49 and the curved surface jig 41 are shown in two places for convenience of explanation, but in reality, there is only one place.

<< Work 49 >>
The work 49 has a curved surface. The work 49 is a rectangular thin plate in a plan view, but is an arc-shaped thin plate having a constant thickness in a side view. Specific examples of the material of the work 49 are glass, resin, plastic, paper, cloth, and metal.

<< Curved surface jig 41 >>
The curved surface jig 41 is a jig that holds the work 49 on a curved surface.
The curved surface jig 41 is a rectangular metal plate in a plan view, but is an arc-shaped thin metal plate having a constant thickness in a side view. The curved surface jig 41 has the same curved surface or curved surface as the work 49. Specific examples of the material of the curved surface jig 41 are aluminum, iron, and stainless steel.
At the center of the side surface of the curved surface jig 41, there is a pair of pin insertion members 42. The pin insertion material 42 has a rectangular washer shape, and there is a pin hole 43 in the center of the pin insertion material 42.

<< Control unit 110 >>
The screen printing device 100 has a control unit 110.
The control unit 110 controls the entire device. The control unit 110 can be realized by a central processing unit, a program, and a memory. The signal from the control unit 110 is transmitted to each unit described below by the signal line 111. The operation described below can be realized by the control unit 110 transmitting a command by the signal line 111.

<< Housing 50 >>
The screen printing device 100 has a housing 50.
The housing 50 has a box-shaped base 51, a support pillar 52, a pillar frame 53, and a beam frame 54.
The base 51 houses a control unit 110 and a signal line 111, and further houses a drive device such as a power supply device, a pump device, a robo cylinder, a linear guide, and an aspirator (not shown).
On the upper surface of the base 51, four support columns 52 that support the corners of the curved jig 41 stand.
Further, four pillar frames 53 stand on the upper surface of the base 51. A beam frame 54 lies on the two pillar frames 53. A robo cylinder that moves the printing unit 90 back and forth and laterally is housed in the pillar frame 53 as a drive device.

<< Carry-in / out mechanism 60 >>
The screen printing device 100 has a loading / unloading mechanism 60 for loading / unloading the curved surface jig 41 and the work 49 to the printing position.
The carry-in / out mechanism 60 has a table 61 capable of moving the base 51 in the front-rear and lateral directions. As shown in FIG. 3, the table 61 slides by the robo cylinder 64 housed in the base 51 and moves in the front-rear and lateral directions.
Two support cylinders 62 stand on the table 61, and the support pins 63 slide up and down. The support pin 63 holds the front-rear center portion of the curved surface jig 41 in a side view from below.

<< Lateral movement part 70 >>
As shown in FIG. 3, the lateral moving portion 70 is attached to the base 51 so as to be movable in the front-rear lateral direction by sliding the linear guide 74 housed in the base 51. The lateral moving portions 70 exist on both the left and right sides of the curved surface jig 41.

<< Printing unit 90 >>
The screen printing device 100 has a printing unit 90.
As shown in FIGS. 2 and 3, the printing unit 90 is arranged between the two beam frames 54.
The printing unit 90 slides from the robo cylinder 97 housed in the beam frame 54. That is, the printing unit 90 is attached to the beam frame 54 so as to be movable in the front-rear and lateral directions.

A squeegee 92 is attached to the lower center of the printing unit 90.
Below the squeegee 92 is a screen 96.
The screen 96 is detachably attached to the pillar frame 53 by an attachment mechanism (not shown).
The printing unit 90 is an example of a component that works on the work 49.

<< Lateral movement mechanism 140 >>
The screen printing device 100 has a lateral movement mechanism 140 that moves the printing unit 90 and the lateral movement unit 70 in the same direction.
The lateral movement mechanism 140 exists on both the left and right sides of the curved surface jig 41.
The lateral movement mechanism 140 is a mechanism that rotates the curved surface jig 41 and moves the rotation holding portion in the vertical direction while moving laterally from one end to the other end of the curved surface jig 41.
The lateral movement mechanism 140 has a robo cylinder 97 and a linear guide 74, and the robo cylinder 97 actively moves the printing unit 90. The linear guide 74 makes the lateral movement unit 70 passively movable in accordance with the movement of the printing unit 90.
The lateral movement unit 70 and the printing unit 90 are connected by a wire 22 coupled to the coupling unit 21 and the coupling unit 27, and when the printing unit 90 moves forward, the lateral movement unit 70 also moves forward.
The lateral movement unit 70 and the printing unit 90 are connected by a wire 32 coupled to the coupling unit 31 and the coupling unit 37, and when the printing unit 90 moves later, the lateral movement unit 70 also moves later.
One end of the wire 22 is fixed to the connecting portion 21 of the printing portion 90, and the other end of the wire 22 passes through the pulley 23, the pulley 24, the pulley 25, and the pulley 26 on the pillar frame 53, and the other end of the wire 22 is the connecting portion of the lateral moving portion 70. It is fixed at 27.
One end of the wire 32 is fixed to the connecting portion 31 of the printing portion 90, and the other end of the wire 32 passes through the pulley 33, the pulley 34, the pulley 35, and the pulley 36 on the pillar frame 53, and the other end of the wire 32 is the connecting portion of the lateral moving portion 70. It is fixed to 37.

As a result, when the printing unit 90 slides back and forth by the robo cylinder 97, the laterally moving unit 70 also slides back and forth by the same amount.

<< Holding mechanism 141 >>
The lateral movement mechanism 140 includes a holding mechanism 141 that sandwiches the upper surface and the lower surface of the curved surface jig 41. The pinching mechanism 141 exists on both the left and right sides of the curved surface jig 41.
The pinching mechanism 141 includes an altitude determining unit 142 that determines the height of the sandwiching surface 44 sandwiched by the sandwiching mechanism 141 of the curved surface jig 41, and a pressurizing unit 143 that pressurizes the curved surface jig 41 and moves it to the altitude determining unit 142. And have.
The pressurizing section 143 has two pressurizing rollers 73 arranged in the lateral direction.
The altitude determination unit 142 has an opposed roller 94 arranged in the middle of the two pressure rollers 73 so as to be in contact with the curved surface jig.

<< Altitude determination unit 142 >>
The altitude determination unit 142 is provided in the printing unit 90.
The altitude determination unit 142 exists on both the left and right sides of the curved surface jig 41.
The altitude determination unit 142 has a roller holding unit 93, an opposed roller 94, and a micrometer 95.
The roller holding portion 93 holds one facing roller 94. The opposing roller 94 is rotatable about an axis.
The micrometer 95 finely adjusts the height of the facing roller 94, and by adjusting the micrometer 95, the height of the facing roller 94 can be accurately determined.

<< Pressurized section 143 >>
The pressurizing section 143 is provided on the lateral moving section 70.
The pressurizing portion 143 exists on both the left and right sides of the curved surface jig 41.
The lateral movement unit 70 has a lateral movement cylinder 71, a roller upper / lower pin 72, and a pressure roller 73.
The roller up / down pins 72 of the lateral movement cylinder 71 slide up and down. The roller upper and lower pins 72 hold two pressure rollers 73, one for the rear and one for the front. The pressure roller 73 is rotatable about a shaft. The two axes of the pressure roller 73 are horizontal and at the same height, and the radii of the two pressure rollers 73 are the same.

As shown in FIG. 2, the positions of the pressure roller 73 and the facing roller 94 are inside the side surface of the curved surface jig 41 and outside the work 49.

<< Rotation holding unit 120 >>
The screen printing apparatus 100 has a rotation holding portion 120 that rotatably holds the curved surface jig 41.
The rotation holding portion 120 exists on both the left and right sides of the curved surface jig 41.
The rotation holding portion 120 has an advancing / retreating cylinder 86 and a fulcrum pin 87.
The fulcrum pin 87 holds the center of both the left and right sides of the curved surface jig 41.
The advancing / retreating cylinder 86 is a cylinder that moves the fulcrum pin 87 back and forth.
The fulcrum pin 87 of the advancing / retreating cylinder 86 is inserted into the pin hole 43 of the pin insertion material 42. As a result, the curved surface jig 41 is rotatably held around the fulcrum pin 87.

<< Pin holding part 130 >>
The screen printing apparatus 100 has a pin holding portion 130 that movably holds the fulcrum pin 87 rotatably held by the rotation holding portion 120 in the vertical direction. The rotation holding portion 120 is a part of the pin holding portion 130.
The pin holding portions 130 are present on both the left and right sides of the curved surface jig 41.
The pin holding portion 130 has a fixed pillar 81, an upper and lower cylinder 82, an upper and lower pin 83, a horizontal arm 84, and an upper and lower linear guide 85.
The fixed column 81 is a column fixed to the lower center of the beam frame 54.
The upper and lower cylinder 82 is an upper and lower cylinder that moves the fulcrum pin 87 upward.

The horizontal arm 84 is an arm portion extending in the horizontal direction from the lower part of the fixed pillar 81, and fixes the upper and lower cylinders 82.
The vertical linear guide 85 is a linear guide fixed in the vertical direction to the fixed pillar 81.
The vertical linear guide 85 holds the advancing / retreating cylinder 86 of the pin holding portion 130 so as to be movable in the vertical direction.

The upper and lower pins 83 are pins of the upper and lower cylinders 82 and slide up and down.
The upper and lower pins 83 are directly below the advancing / retreating cylinder 86, and the advancing / retreating cylinder 86 moves up and down by moving the upper / lower pins 83 up and down.
The upper / lower pin 83 and the advancing / retreating cylinder 86 are not connected, and the upper / lower pin 83 comes into contact with the lower part of the advancing / retreating cylinder 86 due to the ascent of the upper / lower pin 83, and the advancing / retreating cylinder 86 rises. When the upper and lower pins 83 are lowered, the advancing / retreating cylinder 86 is lowered by gravity. Since the advancing / retreating cylinder 86 and the fulcrum pin 87 move together, the fulcrum pin 87 also moves up / down in the vertical direction as the advancing / retreating cylinder 86 moves up and down. The vertical movement of the fulcrum pin 87 is an example of linear movement.

<Arrangement relationship>
As shown in FIG. 6A, when the rotation axes of the two pressure rollers 73 and the rotation axes of one opposing roller 94 are connected, an isosceles triangle is formed. The base of an isosceles triangle is horizontal. The axis of rotation of the opposing roller 94 is the apex of an isosceles triangle.
The height of the rotation axis of the opposed roller 94 is adjusted by a micrometer 95 so that the lower surface of the screen 96 and the surface of the work 49 have a desired distance (clearance). That is, if the height of the rotation axis of the opposed roller 94 is determined, the ascending height of the curved surface jig 41 is determined, so that the distance between the lower surface of the screen 96 and the surface of the work 49 can be determined in advance.
Further, if the thickness of the curved surface jig 41 changes, the fixing position of the facing roller 94 is similarly adjusted by the micrometer 95 so that the lower surface of the screen 96 and the surface of the work 49 have a desired distance (clearance). do.
At the time of printing, as shown in FIG. 6B, the squeegee 92 presses the screen 96, and the squeegee 92 brings the screen 96 into contact with the work 49 at the center line 48 to perform screen printing.

*** Explanation of operation ***
A work operation method and a printing method will be described with reference to FIG.
First, the outline is as follows.

First, the curved surface jig 41 holding the work 49 on a curved surface is carried in, the curved surface jig 41 is rotatably held by the fulcrum pin 87 as a fulcrum, and the fulcrum pin 87 is movably held in the vertical direction. ..
The curved surface jig 41 is sandwiched between two horizontally arranged pressure rollers 73 and one facing roller 94 arranged between the two pressure rollers 73, and the pressure roller 73 and the facing roller are sandwiched between the two pressure rollers 73 and the facing roller 94. The pressure roller 73 and the facing roller 94 are moved in the horizontal direction while sandwiching the curved surface jig 41 with the 94.
By this movement, while rotating the curved surface jig 41 with the fulcrum pin 87 as the fulcrum and moving the fulcrum pin 87 as the fulcrum in the vertical direction, the work 49 is moved from one end to the other end of the work 49. Make a horizontal plane appear.
Along with this movement, the squeegee 92 is moved and printed on the horizontal surface of the work 49.

The detailed operation of the work operation method will be described below.
The following operations are executed by the control unit 110 provided in the screen printing device 100.
As a premise, it is assumed that the printing unit 90 and the lateral moving unit 70 are at the printing start position in the rear direction.

Step S11: Work set process With the curved surface jig 41 mounted on the support pillar 52 in FIG. 1, the work 49 is mounted on the curved surface jig 41. The curved surfaces of the curved surface jig 41 and the work 49 have the same radius, and the work 49 is arranged on the curved surface jig 41 without a gap.

Step S12: Table moving process The control unit 110 raises the support pin 63 of the support cylinder 62 and lifts the curved surface jig 41 from the support pillar 52. In this state, the curved surface jig 41 is in a state where it can swing around the tip of the support pin 63. The control unit 110 moves the table 61 in the front lateral direction, and stops the movement at a position where the pin hole 43 of the pin insertion member 42 and the fulcrum pin 87 of the advancing / retreating cylinder 86 coincide with each other in the vertical direction.

Step S13: Positioning step When the table 61 carries the curved surface jig 41, the control unit 110 raises the upper and lower pins 83 of the upper and lower cylinders 82 and lifts the advance / retreat cylinder 86. The control unit 110 raises the advancing / retreating cylinder 86 until the heights of the upper and lower pins 83 match the heights of the pin holes 43 and the fulcrum pins 87.

Step S14: The fulcrum pin insertion step The control unit 110 advances the fulcrum pin 87 of the advancing / retreating cylinder 86 and inserts the fulcrum pin 87 into the pin hole 43. Then, the control unit 110 lowers the support pin 63 of the support cylinder 62. As the support pin 63 of the support cylinder 62 is lowered, the advancing / retreating cylinder 86 is also lowered. In this state, the curved surface jig 41 is in a state where it can swing around the fulcrum pin 87.

Step S15: Printing step The printing step includes the following sandwiching step and moving step.

<Pinching process>
The screen printing device 100 raises the roller upper and lower pins 72 of the lateral movement cylinder 71 to push up the pressure roller 73 in order to sandwich the curved surface jig 41 between the facing roller 94 and the pressure roller 73.
As the roller upper and lower pins 72 rise, the rear pressure roller 73 first touches the lower surface of the curved surface jig 41. Further, as the roller upper and lower pins 72 rise, the curved surface jig 41 rotates clockwise and the upper surface of the curved surface jig 41 abuts on the opposing roller 94. Since the upper surface of the curved surface jig 41 is prohibited from moving upward by the facing roller 94, the curved surface jig 41 tends to move downward to the right.

Since the advancing / retreating cylinder 86 is attached to the vertical linear guide 85 so as to be movable only up and down, when the curved jig 41 tries to move downward to the right, the fulcrum pin 87 rotates in the pin hole 43. However, the advancing / retreating cylinder 86 rises along the vertical linear guide 85 until it hits the opposing roller 94, and then descends after coming into contact with the opposing roller 94. When the advancing / retreating cylinder 86 descends along the vertical linear guide 85 and the curved surface jig 41 moves downward to the right, the front pressure roller 73 touches the lower surface of the curved surface jig 41.
In this way, the portion sandwiched between the two pressure rollers 73 and the one facing roller 94 becomes the sandwiching surface 44.

The rotation of the curved surface jig 41 ends when the two pressure rollers 73 both touch the lower surface of the curved surface jig 41. At this point, the relationship between the screen 96 and the work 49 is the state A of FIGS. 5 and 6A.
As shown in FIGS. 5 and 6A, when the two pressure rollers 73 both touch the lower surface of the curved surface jig 41, the holding surface 44 between the two pressure rollers 73 Is horizontal. The center of the holding surface 44 is horizontal.

<Movement process>
The control unit 110 moves the printing unit 90 in the printing direction, that is, in the front lateral direction, and starts printing by the printing unit 90. The squeegee 92 is located directly above the center line 48 at the center of the sandwiching surface 44, and printing of the print pattern of the screen 96 is started at the center line 48 of the sandwiching surface 44.
When the printing unit 90 moves in the front lateral direction while printing, the wire 22 also moves the lateral moving unit 70 in the front lateral direction by the same amount. That is, the facing roller 94 is directly above the center of the two pressure rollers 73, and the facing roller 94 and the pressure roller 73 hold the curved surface jig 41 in the front lateral direction while maintaining their positional relationship. Move to.

As the opposing roller 94 and the pressure roller 73 move in the front lateral direction, the right shoulder of the curved jig 41 gradually rises, and the holding surface 44 of the curved jig 41 also moves in the front lateral direction. That is, printing to the center of the holding surface 44 is performed together with the movement of the printing unit 90. Since the sandwiching surface 44 is also a curved surface, more accurately, printing is performed on the center line 48, which is a straight line portion in the center of the sandwiching surface 44.

As the facing roller 94 and the pressure roller 73 move in the front lateral direction, the relationship between the screen 96 and the work 49 changes from the state A in FIG. 7A to the states B and C.
When the pinching surface 44 moves forward, the fulcrum pin 87 of the advancing / retreating cylinder 86 rises upward along the vertical linear guide 85 as shown by the arrow in FIG. 7A. From the state A to the state C from the start portion to the center portion of printing, the fulcrum pin 87 of the advancing / retreating cylinder 86 rises upward along the vertical linear guide 85.

Further, as the opposed roller 94 and the pressure roller 73 move in the front lateral direction, the relationship between the screen 96 and the work 49 changes from the state C in FIG. 7 (b) to the states D and E.
When the pinching surface 44 moves from the center to the front, the fulcrum pin 87 of the advancing / retreating cylinder 86 descends along the vertical linear guide 85 from the center portion to the end portion of printing as shown by the arrow in FIG. 7 (b). .. From the state C to the state E from the central portion to the end portion of printing, the fulcrum pin 87 of the advancing / retreating cylinder 86 descends along the vertical linear guide 85.

The curved jig 41 swings like a rocking chair or a cradle by the fulcrum pin 87 that moves up and down, and prints only on the center line 48 where the curved jig 41 and the work 49 come into contact, and is not printed except on the center line 48. ..

Step S16: Release step When the printing unit 90 moves to the front end and printing is completed, the roller upper and lower pins 72 are lowered to release the holding of the curved surface jig 41 by the pressure roller 73. The advancing / retreating cylinder 86 descends due to gravity, and the curved surface jig 41 returns to a swingable state.

Step S17: Support pin 63 The control unit 110 raises the support pin 63 to hold the lower surface of the curved surface jig 41. Next, the control unit 110 removes the fulcrum pin 87 of the advancing / retreating cylinder 86 from the pin hole 43.
In this way, the curved surface jig 41 is released from the fulcrum pin 87 and held by the support pin 63.

Step S18: Table return step The control unit 110 moves the table 61 in the rear lateral direction, and carries out the curved surface jig 41 and the work 49.
The control unit 110 lowers the support pin 63 of the support cylinder 62 and holds the curved surface jig 41 on the support pillar 52.
Further, the control unit 110 moves the printing unit 90 in the rear lateral direction. By moving the printing unit 90 in the rear lateral direction, the lateral moving unit 70 is moved in the rear lateral direction by the wire 32, and returns to the printing start state.
After that, the work 49 is replaced and new printing is started.

*** Effect of Embodiment 1 ***
According to this embodiment, screen printing can be performed on a curved work.
According to this embodiment, since the work portion of the work having a curved surface can be held horizontally, the same work as that for the work on a flat surface can be performed even if the work has a curved surface.
Since printing is performed only on the center line 48 and the work 49 is a curved surface, plate separation is improved as compared with the case where the work 49 is a flat surface.
In the first embodiment, the length of the work 49 does not match the length of the screen 96 in the front-rear direction. However, when the radius of the curved surface jig 41 is sufficiently large, it can be considered that the length of the screen 96 in the front-rear direction and the length of the work 49 in the front-rear direction are the same, and there is no problem in printing. Alternatively, the first embodiment is suitable when the printing accuracy is not required in the front-back direction.

*** Other configurations ***
If the support cylinder 62 can hold the curved surface jig 41, the support column 52 may not be provided. For example, a flat plate may be horizontally attached to the top of the support pin 63 of the support cylinder 62 to hold the curved surface jig 41. Alternatively, three or four support cylinders 62 may be arranged at different positions in the front-back and left-right directions to hold the curved surface jig 41.

Instead of interlocking the lateral movement unit 70 and the printing unit 90 with the wire 22 and the wire 32, the lateral movement unit 70 is independently moved in the front-rear and lateral directions by the robo cylinder, and the lateral movement unit 70 and the printing unit 90 are individually moved. It may be operated. The control unit 110 may control the robo-cylinder of the lateral movement unit 70 and the robo-cylinder of the printing unit 90 to move the lateral movement unit 70 and the printing unit 90 in the same direction by the same amount.

The fixed column 81 may not be fixed to the beam frame 54, and the horizontal arm 84 may be fixed to the base 51 or may be fixed to the column frame 53.

The pin insertion member 42 and the fulcrum pin 87 may be arranged in reverse. That is, the fulcrum pin 87 may be arranged on both the left and right sides of the curved surface jig 41, the pin insertion member 42 may be arranged on the advancing / retreating cylinder 86, and the pin inserting member 42 may be advanced / retracted with respect to the fulcrum pin 87.

Embodiment 2.
In the second embodiment, the differences from the first embodiment will be described.

*** Explanation of configuration ***
FIG. 8 is a configuration diagram of the curved surface jig 41 of the second embodiment.
The outer shape of the curved surface jig 41 of the second embodiment in a plan view is the same as the outer shape of the curved surface jig 41 of the first embodiment in a plan view.
The curved surface jig 41 has a curved surface plate 47 having a width smaller than that of the curved surface jig 41 of the first embodiment.
Two guide rails 45 are fixed to both sides of the curved plate 47 via a plurality of brackets 46.
The upper surface of the guide rail 45 is a curved surface having the same radius as the upper surface of the curved plate 47.
The lower surface of the guide rail 45 is a curved surface having the same radius as the lower surface of the curved plate 47. Alternatively, the lower surface of the guide rail 45 is a curved surface having a radius smaller than the radius of the lower surface of the curved plate 47.
There is a pin hole 43 on the outer side of the guide rail 45.
The bracket 46 is an L-shaped metal member composed of a short arm and a long arm. The bracket 46 fixes the guide rail 45 to the end surface of the short arm, and fixes the back surface of the curved plate 47 to the upper surface of the long arm.
The curved plate 47 is a thin plate such as aluminum or plastic, and the guide rail 45 and the bracket 46 are made of a metal such as iron or stainless steel, which is harder than the curved plate 47.

*** Explanation of operation ***
The curved surface jig 41 of the second embodiment is used in exactly the same manner as the curved surface jig 41 of the first embodiment.
With the fulcrum pin 87 inserted in the pin hole 43 of the guide rail 45, the opposed roller 94 presses the upper surface of the guide rail 45, and the pressure roller 73 pushes up the lower surface of the guide rail 45, whereby the guide rail 45 is sandwiched. Will be done. Since the guide rail 45 and the curved plate 47 are formed of the same curved surface, a horizontal holding surface 44 is formed on the guide rail 45 and the curved plate 47 and is moved in the front lateral direction as in the first embodiment. You can print.

*** Effect of Embodiment 2 ***
Since the guide rail 45 is harder than the curved plate 47, the guide rail 45 is sandwiched without being deformed, so that the work can be operated accurately.
If the radius of the lower surface of the guide rail 45 is made smaller than the radius of the lower surface of the curved plate 47, the thickness of the guide rail 45 can be increased and the guide rail 45 can be further strengthened.
Further, since the pressure held only by the guide rail 45 is applied, the thickness of the curved plate 47 can be reduced, the curved plate 47 can be easily processed and manufactured, the weight of the curved jig 41 as a whole is reduced, and the curved plate 47 is reduced. Material costs can be reduced. Since the curved surface jig 41 is a component corresponding to a work, it is necessary to prepare a plurality of types of curved surface jigs 41 having different curved surfaces, and the processing, manufacturing, weight, and material cost of the curved surface jig 41 are important.

Embodiment 3.
In the third embodiment, the differences from the first embodiment will be described.

*** Explanation of configuration ***
<Suction mechanism 10>
FIG. 9 is a configuration diagram in which the suction mechanism 10 is mounted on the curved surface jig 41 of the first embodiment.
A suction plate 15 for sucking the work 49 is mounted on the surface of the curved surface jig 41.
At the center of the suction plate 15, there is a suction port 16 that penetrates. The curved surface jig 41 also has a through hole at the same position as the suction port 16. A suction groove 17 communicating with the suction port 16 is formed on the surface of the suction plate 15.
A suction cylinder 11 connected to the suction port 16 is fixed to the curved surface jig 41 by a fixture 12 on the back surface. The suction tube 11 is connected to the suction device 14 by a suction tube 13. The suction device 14 is a vacuum pump controlled by the control unit 110.

*** Explanation of operation ***
The work 49 is placed on the suction plate 15, and the work 49 is sucked by the suction device 14 to suck the work 49 on the suction plate 15.
The control unit 110 operates the suction device 14 from the start of printing to the end of printing to suck the work 49.

*** Effect of Embodiment 3 ***
Since the position of the work 49 with respect to the curved surface jig 41 is fixed and the positions of the curved surface jig 41 and the work 49 do not shift during printing, accurate operation on the work can be performed.
Even if the work 49 is a soft work that cannot hold the shape of paper, cloth, a flexible plate, etc. by itself, the work is performed along the curved surface of the curved surface jig 41 by sucking the soft work 49. be able to.

Embodiment 4.
In the fourth embodiment, the differences from the first embodiment will be described.

*** Explanation of configuration ***
FIG. 10 is a configuration diagram of a side surface of the curved surface jig 41 of the fourth embodiment.
The curved surface jig 41 of (a) has a flat surface in the center and curved surfaces at both ends.
The curved surface jig 41 of (b) has a curved surface in the center and flat surfaces at both ends.
As described above, the curved surface jig 41 may have a flat surface. At the transition from a curved surface to a flat surface and the transition from a flat surface to a curved surface, the sandwiching surface 44 is not horizontal, but if the transition is gentle, the sandwiching surface 44 becomes almost horizontal, so that there is no problem in printing.

The curved surface jig 41 of (c) has a downward convex curved surface.
If the screen 96 is covered with a screen frame and is flat, and the curved surface jig 41 has a downwardly convex curved surface, the curved surface jig 41 rotates between the screen 96 and the curved surface jig 41. However, a clearance is required so that the end portion of the curved surface jig 41 does not come into contact with the screen 96. Further, the screen 96 is loosely stretched so that the screen 96 reaches the work 49 on the curved surface jig 41 when printing with the squeegee 92.
Alternatively, when the curved surface jig 41 has a downwardly convex curved surface, the printing unit 90 has a tubular printing mechanism like a rotary press, and the printing unit 90 has a screen 96 for the downwardly convex curved surface. You can print while rotating.
If there is a convex curved surface below, it is desirable to provide two opposing rollers 94 on the altitude determination unit 142. The number of pressure rollers 73 of the pressure unit 143 may be one.

The curved surface jig 41 of (d) has an upwardly convex curved surface and a downwardly convex curved surface.
The curved surface jig 41 of (e) has an upward convex curved surface in the center and a downward convex curved surface at both ends.
As described above, the curved surface jig 41 may have a convex curved surface on the upper surface. At the transition between the convex curved surface and the downwardly convex curved surface, the sandwiching surface 44 is not horizontal, but if the transition is gentle, the sandwiching surface 44 is substantially horizontal, so that there is no problem in printing.
When there is a convex curved surface on the upper side and a curved surface on the lower side, it is desirable to provide two opposing rollers 94 in the altitude determination unit 142 and two pressure rollers 73 in the pressure unit 143.

The curved surface jig 41 of (f) is a horizontally long pin hole 43 of the pin insertion material 42. If the pin hole 43 is made horizontally long, the fulcrum pin 87 can be moved in the front-back and horizontal directions during printing, so that the fulcrum pin 87 can be moved up and down and back and forth, and the printing lengths of the screen 96 and the work 49 match. .. Therefore, accurate printing can be performed in the front-back direction.

Embodiment 5.
In the fifth embodiment, the differences from the first embodiment will be described.

*** Explanation of configuration ***
11, 12, and 13 are block diagrams of the screen printing apparatus 100 according to the fifth embodiment.
There is a pin 151 on the side of the curved surface jig 41.
A pin receiving material 152 is fixed to the fulcrum pin 87 of the advancing / retreating cylinder 86. The pin receiving material 152 is a component that also has the functions of the rotation holding portion 120 and the pin holding portion 130.
The upper and lower pins 83 of the upper and lower cylinders 82 fix the advancing / retreating cylinder 86, and the height of the advancing / retreating cylinder 86 can be fixed.
As shown in FIG. 14A, the pin receiving material 152 is formed with an inverted V-shaped or inverted U-shaped or C-shaped or eight-shaped or chevron-shaped pin path hole 153. FIG. 14A is a schematic diagram, and the shape of the pin path hole 153 is formed in the same path as the movement path of the pin 151.
It is an example of diagonal movement of the fulcrum pin 87 in an inverted V-shaped or inverted U-shaped or H-shaped or eight-shaped or chevron pin path hole 153, or an example of curved movement. Diagonal movement means that both vertical movement and forward / backward movement are possible.
A fulcrum pin 87 is fixed to the lower portion of the pin receiving material 152, and the pin receiving material 152 also advances and retreats as the fulcrum pin 87 advances and retreats.

*** Explanation of operation ***
As shown in FIG. 14B, in the first embodiment, when the fulcrum pin 87 moves up and down, the work 49 having a length L2 corresponds to the screen 96 having a length L1. Since the length L1 <the length L2, in the fifth embodiment, the pin 151 can be moved not only up and down but also up, down, left and right in order to perform printing with higher accuracy.

When the curved surface jig 41 is carried in, the control unit 110 adjusts the height of the advancing / retreating cylinder 86 to match the position of the pin 151 with the position B of the highest portion of the pin path hole 153, and sets the pin receiving material 152. By extruding, the pin 151 is inserted into the pin path hole 153 of the pin receiving material 152.
After that, the control unit 110 pushes up the upper and lower pins 83 to raise the advancing / retreating cylinder 86, and sets the curved surface jig 41 at the printing position.
Subsequent operation is the same as that of the first embodiment, but since the upper and lower pins 83 fix the height of the advancing / retreating cylinder 86 during printing, the height of the pin receiving material 152 remains fixed.
At the start of printing, the curved surface jig 41 is sandwiched and the curved surface jig 41 is lowered to the right, so that the pin 151 is located at the position A of the pin path hole 153.
During printing, from the start of printing to the center of printing, the pin 151 moves the pin path hole 153 of the pin receiving material 152 from the position A to the position B. From the center of printing to the end of printing, the pin 151 moves the pin path hole 153 of the pin receiving material 152 from the position B to the position C.
When the holding of the curved surface jig 41 is released at the end of printing, the curved surface jig 41 is lifted by the support cylinder 62 of the support pin 63, and then the pin receiving material 152 is retracted to carry out the curved surface jig 41.

*** Effect of Embodiment 5 ***
The pin receiving material 152 can move the pin 151 not only up and down but also back and forth. That is, since the pin receiving material 152 can move the pin 151 in the oblique direction, the printing lengths of the screen 96 and the work 49 match. Therefore, accurate printing can be performed in the front-back direction.

Embodiment 6.
In the sixth embodiment, the differences from the fifth embodiment will be described.

*** Explanation of configuration ***
FIG. 15 is a block diagram of the work 49 and the pin receiving material 152 of the fifth embodiment.
There is a side plate 154 on the side of the curved surface jig 41. Below the side plate 154 is a pin 151.
A pin receiving material 152 is fixed to the fulcrum pin 87 of the advancing / retreating cylinder 86. The pin receiving material 152 is a component that also has the functions of the rotation holding portion 120 and the pin holding portion 130.
The upper and lower pins 83 of the upper and lower cylinders 82 fix the advancing / retreating cylinder 86, and the height of the advancing / retreating cylinder 86 can be fixed.
The pin receiving material 152 is formed with a long pin path hole 153 in the front-rear direction. FIG. 15 is a schematic diagram, and the shape of the pin path hole 153 is formed in the same path as the movement path of the pin 151.
For example, when the pin 151 is located on the central axis of the curved surface of the curved surface jig 41, the pin path hole 153 may have a linear shape in the front-rear and lateral directions. The front-back movement of the fulcrum pin 87 in the pin path hole 153 having a linear shape in the front-back lateral direction is an example of the linear movement.
When the pin 151 is shorter than the center of the curved surface of the curved surface jig 41, the pin path hole 153 has a concave arcuate curved shape that is long in the front-rear and lateral directions. The movement of the fulcrum pin 87 in the concave arcuate pin path hole 153 that is long in the front-back and lateral directions is an example of curved movement.
A fulcrum pin 87 is fixed to the lower portion of the pin receiving material 152, and the pin receiving material 152 also advances and retreats as the fulcrum pin 87 advances and retreats.

*** Explanation of operation ***
When the curved surface jig 41 is carried in, the control unit 110 adjusts the height of the advancing / retreating cylinder 86 to match the position of the pin 151 with the position of the pin path hole 153, and pushes out the pin receiving material 152. The pin 151 is inserted into the pin path hole 153 of the pin receiving material 152.
After that, the control unit 110 pushes up the upper and lower pins 83 to raise the advancing / retreating cylinder 86, and sets the curved surface jig 41 at the printing position.
Subsequent operation is the same as that of the first embodiment, but since the upper and lower pins 83 fix the height of the advancing / retreating cylinder 86 during printing, the height of the pin receiving material 152 remains fixed.
At the start of printing, the curved surface jig 41 is sandwiched and the curved surface jig 41 is lowered to the right, so that the pin 151 is located at the position A of the pin path hole 153.
During printing, from the start of printing to the center of printing, the pin 151 moves the pin path hole 153 of the pin receiving material 152 from the position A to the position B. From the center of printing to the end of printing, the pin 151 moves the pin path hole 153 of the pin receiving material 152 from the position B to the position C.
When the holding of the curved surface jig 41 is released at the end of printing, the curved surface jig 41 is lifted by the support cylinder 62 of the support pin 63, and then the pin receiving material 152 is retracted to carry out the curved surface jig 41.

*** Effect of Embodiment 6 ***
Since the pin receiving material 152 can move the pin 151 in the front-back linear direction or the arc-shaped curved direction extending in the front-back direction, the printing lengths of the screen 96 and the work 49 match. Therefore, accurate printing can be performed in the front-back direction.

Embodiment 7.
In the seventh embodiment, the points different from the above-described embodiments will be described.

*** Explanation of configuration ***
FIG. 16 is a configuration diagram of the curved surface jig 41 of the seventh embodiment.
The outer shape of the curved surface jig 41 in the plan view of the seventh embodiment is the same as the outer shape of the curved surface jig 41 in the plan view of the second embodiment shown in FIG.
Two guide rails 45 are fixed to both sides of the curved plate 47 via a plurality of brackets 46. The curved plate 47 is fixed to the bracket 46 by a countersunk screw 175.
A suction plate 160 is fixed to the upper surface of the curved plate 47.
The suction plate 160 corresponds to the suction plate 15 in FIG. 9, and is a suction layer for sucking the work 49.
The curved surface plate 47 and the suction plate 160 have the same size both vertically and horizontally, and the radius of the upper surface of the curved surface plate 47 and the lower surface of the suction plate 160 are curved surfaces having the same radius.

The upper surface of the guide rail 45 is a curved surface having the same radius as the upper surface of the suction plate 160.
The lower surface of the guide rail 45 is a curved surface having the same radius as the lower surface of the curved plate 47. Alternatively, the lower surface of the guide rail 45 is a curved surface having a radius smaller than the radius of the lower surface of the curved plate 47.
A pin insertion member 42 is fixed to the outer side of the guide rail 45, and a pin hole 43 is provided in the center of the pin insertion member 42.
The bracket 46 is an L-shaped metal member composed of a short arm and a long arm. The bracket 46 fixes the guide rail 45 to the end surface of the short arm, and fixes the back surface of the curved plate 47 to the upper surface of the long arm.
The curved plate 47 is a thin plate such as aluminum or plastic, and the guide rail 45 and the bracket 46 are made of a metal such as iron or stainless steel, which is harder than the curved plate 47.

The suction plate 160 is a resin plate such as vinyl chloride, acrylic, or other synthetic resin.
The suction plate 160 is a rectangular flat plate when no external force is applied.
The suction plate 160 is elastic and deforms when an external force is applied, but returns to the original flat plate shape when the external force is removed.
The hardness of the suction plate 160 is such that it can be curved by a human force, and the suction plate 160 can be deformed along the upper surface of the curved plate 47 by a human force.
The suction plate 160 is attached to the curved plate 47 by a clasp 170, and the suction plate 160 and the curved plate 47 are fixed by the elastic force of the clasp 170.
Further, the suction plate 160 and the curved plate 47 are fixed by the elastic force of the clasp 170 and the elastic force of the curved plate 47.

The clasp 170 has a U-shaped cross section and is made of a metal such as stainless steel.
The clasp 170 is formed of spring steel such as a stainless steel strip for spring.
The clasp 170 is a clip whose spacing is narrowed toward the U-shaped tip.
The clasp 170 can be attached and detached manually, and is not attached and detached by using a tool like a screw or a bolt. Further, the clasp 170 is removable repeatedly, and is not something that cannot be peeled off once it is bonded, unlike an adhesive.
The clasp 170 has a length of less than one-third of the length of the short side of the suction plate 160.
The width of the bottom surface of the concave portion of the clasp 170 is slightly larger than the value obtained by adding the thicknesses of the curved plate 47 and the suction plate 160, and the opening width of the concave portion is the sum of the thicknesses of the curved plate 47 and the suction plate 160. Slightly less than the value.
The clasp 170 sandwiches the ends of the curved plate 47 and the suction plate 160, and fixes the curved plate 47 and the suction plate 160.
Three stoppers 170 are attached to one side of the curved plate 47, and the curved plate 47 and the suction plate 160 are fixed only by the stopper 170.

FIG. 17 is a partial configuration diagram of the curved surface jig 41 from which the suction plate 160 is removed from the curved surface jig 41 of FIG.
There is a through hole 176 in the center of the curved plate 47, and the through hole 176 is connected to the suction port 16.
A suction cylinder 11 connected to the suction port 16 is fixed to the curved surface jig 41 by a fixture 12 on the back surface. The suction tube 11 is connected to the suction device 14 by a suction tube 13. The suction device 14 is a vacuum pump controlled by the control unit 110.

The curved plate 47 is fixed to the bracket 46 by a countersunk screw 175, but the surface of the screw head of the countersunk screw 175 is on the same surface as the upper surface of the curved plate 47 and protrudes from the upper surface of the curved plate 47. There is no.

FIG. 18 is a block diagram of the suction plate 160 according to the seventh embodiment.
The suction plate 160 has one lower surface suction groove 161 on the lower surface.
The lower surface suction groove 161 is a linear groove formed in the center front-rear direction of the lower surface of the suction plate 160.
The suction plate 160 has eight upper surface suction grooves 162 on the upper surface.
The upper surface suction groove 162 is a linear groove formed in the left-right direction on the upper surface of the suction plate 160.
The lower surface suction groove 161 and the upper surface suction groove 162 are orthogonal to each other.
At the intersections of the lower surface suction groove 161 and the upper surface suction groove 162, there are groove communication holes 164 that communicate the lower surface suction groove 161 and the upper surface suction groove 162.
The width of the lower surface suction groove 161 is twice the width of the upper surface suction groove 162, and the diameter of the groove communication hole 164 is the same as the width of the upper surface suction groove 162.
The cross-sectional shape of the lower surface suction groove 161 is U-shaped or concave, and the depth of the groove is one-third of that of the suction plate 160.
The cross-sectional shape of the upper surface suction groove 162 is an arc shape, and the depth of the groove is one tenth of that of the suction plate 160.
A through hole 176 is arranged in the center of the lower surface suction groove 161. Since the lower surface suction groove 161 and the upper surface suction groove 162 communicate with each other through the groove communication hole 164, when the suction device 14 starts suction, the air in the lower surface suction groove 161 is sucked, and further, the air in the lower surface suction groove 161 is sucked through the groove communication hole 164. The air in the upper surface suction groove 162 is sucked, and the work 49 is sucked on the suction plate 160.
The number and length of the upper surface suction grooves 162 are determined by the size of the work 49, and the upper surface suction grooves 162 are not formed so as to protrude from the work 49. The number, length, shape, and pattern of the upper surface suction grooves 162 of the suction plate 160 are determined by the size of the work 49. A specific example of the simple configuration of the upper surface suction groove 162 of the suction plate 160 is two parallel straight grooves formed in the vicinity of the inside of both ends in the front-rear direction of the work 49.

As described above, the curved surface jig 41 of this embodiment is a curved surface jig 41 on which a work having a curved surface is placed, and a suction plate 160 for holding the work 49 and a curved surface plate 47 on which the suction plate 160 is fixed. And guide rails 45 fixed on both sides of the curved plate 47.
The curved surface jig 41 uses only a clasp 170 to fix the suction plate 160 and the curved surface plate 47.

*** Explanation of operation ***
The curved surface jig 41 of the seventh embodiment is used in exactly the same manner as the curved surface jig 41 of the first embodiment.
With the fulcrum pin 87 inserted in the pin hole 43 of the guide rail 45, the opposed roller 94 presses the upper surface of the guide rail 45, and the pressure roller 73 pushes up the lower surface of the guide rail 45, whereby the guide rail 45 is sandwiched. Will be done. Since the guide rail 45 and the suction plate 160 are formed of the same curved surface, a horizontal holding surface 44 is formed on the guide rail 45 and the suction plate 160 and is moved in the front lateral direction as in the first embodiment. You can print.

*** Explanation of manufacturing method ***
The outline manufacturing method of the curved surface jig 41 on which the work 49 having a curved surface is placed is as follows.
A metal flat plate is cut into a rectangular shape to form a flat metal plate, a hole is formed in the cut metal plate, and the perforated metal plate is curved to complete a curved plate 47, and both sides of the curved plate 47 are formed. The guide rail 45 is fixed to.
Further, a resin plate is formed, holes and grooves are formed in the resin plate to complete the suction plate 160, and the suction plate 160 is curved and fixed to the curved plate 47 with a clasp 170.

Hereinafter, a detailed manufacturing method of the curved surface jig 41 will be described with reference to FIG.

Step S21: Metal plate forming step A rectangular aluminum plate having a thickness of 8 mm is punched out to form a rectangular aluminum plate having a thickness of 500 mm × 350 mm.

Step S22: Drilling step A through hole 176 is formed in the center of a rectangular aluminum plate.
Further, a screw hole for fixing the countersunk screw 175 is formed at the corner of the rectangular aluminum plate.
This screw hole is formed in the same truncated cone shape as the shape of the screw head of the countersunk screw 175.

Step S23: Bending step The drilled aluminum plate is pressed and bent so that the radius is 800 mm or 500 mm.
At this point, the curved plate 47 is completed.
The steps up to this point can be used as the method for manufacturing the curved surface jig 41 of the first embodiment.

Step S24: Guide rail fixing process The pin insertion member 42 and the bracket 46 are fixed to the guide rail 45 with screws.
The bracket 46 is fixed to the curved aluminum plate with a countersunk screw 175.
At this point, the curved surface jig 41 without the suction plate 160 shown in FIG. 17 has been manufactured.
The steps up to this point can be used as a method for manufacturing the curved surface jig 41 of the second and third embodiments.

Step S31: Resin plate forming step A rectangular vinyl chloride resin plate having a thickness of 3 mm and having a thickness of 500 mm × 350 mm is formed. As vinyl chloride, antistatic vinyl chloride containing an antistatic agent is used.

Step S32: Groove forming step A lower surface suction groove 161 is formed on the lower surface of a rectangular resin plate by cutting.
The cross section of the bottom surface suction groove 161 is concave, the width of the bottom surface suction groove 161 is 6 mm, and the depth of the bottom surface suction groove 161 is 1 mm. The length of the bottom surface suction groove 161 is 444 mm.
A plurality of upper surface suction grooves 162 are formed on the upper surface of the rectangular resin plate by cutting.
The cross section of the upper surface suction groove 162 has an arc shape with a radius of 3 mm, the width of the upper surface suction groove 162 is 3 mm, and the maximum depth of the upper surface suction groove 162 is 0.3 mm.
The length of the six long upper surface suction grooves 162 is 107 mm.
The length of the two short upper surface suction grooves 162 is 57 mm.
The upper surface suction groove 162 is preferably formed at a position close to both ends in the front-rear direction of the work 49.
The length of the upper surface suction groove 162 is shorter than the left-right length of the work 49.

Step S33: Drilling step A groove communication hole 164 is formed at the intersection of the lower surface suction groove 161 and the upper surface suction groove 162 by drilling.
The diameter of the groove communication hole 164 is 3 mm.
At this point, the suction plate 160 is completed.
The order of the groove forming step and the drilling step may be reversed.
Further, if the resin plate is molded with a mold, the plate forming step, the groove forming step, and the drilling step can be executed at the same time.
Alternatively, if the flat resin plate formed in the plate forming step is heated and pressed, the groove forming step and the drilling step can be executed at the same time.

Step S25: Fixing process Prepare 6 stoppers 170. The clasp 170 has a length of 100 mm, a width of the bottom surface of the recess is 11.5 mm, and an opening width of the recess is 10.8 mm.
One end of the suction plate 160 is aligned with one end of the curved plate 47, and clipped with three fasteners 170. By pushing the clasp 170 by hand, the clasp 170 is fitted into one end of the suction plate 160 and the curved plate 47. The clasp 170 has an elastic force, and the clasp 170 can be attached and detached by human power.
Next, pressure is manually applied to the other end of the suction plate 160 to bend the suction plate 160 along the curved plate 47. The length of both the suction plate 160 and the curved plate 47 is 500 mm, and the suction plate 160 is curved until the other end of the suction plate 160 contacts the other end of the curved plate 47.
After that, the three stoppers 170 are fitted to the other ends of the suction plate 160 and the curved plate 47.
At this point, the curved surface jig 41 is completed.

The clasp 170 sandwiches the suction plate 160 and the curved plate 47 by a spring force, and does not fall off. Further, the restoring force that tries to restore the suction plate 160 to the flat plate prevents the clasp 170 from coming off.
The suction plate 160 and the curved plate 47 are fixed by only six stoppers 170.
The length of the clasp 170 is 100 mm, which is a size suitable for handling by human hands. Further, since three 100 mm stoppers 170 are attached to the suction plate 160 and the curved plate 47 having a left-right width of 350 mm, more than 85% (300 ÷ 300 ÷) of the end portion between the suction plate 160 and the curved plate 47. 350 = 0.857) will be fixed. It is desirable that the stop metal 170 sandwiches the end portion between the suction plate 160 and the curved plate 47 by 50% or more, and more preferably 70% or more, and further, 80% or more.

The hardness and thickness of the suction plate 160 are determined as follows.
1. 1. The flat suction plate 160 can maintain its own shape. The flat suction plate 160 does not lose its shape like a sheet, that is, it does not bend or twist.
2. 2. It has elasticity that allows a curved surface with a radius of 500 mm or a radius of 800 mm to be formed manually from the suction plate 160 of a flat plate.
3. 3. It has a restoring force that can prevent the clasp 170 from falling off.

*** Effect of Embodiment 7 ***
Since the curved plate 47 can be formed by bending a metal flat plate such as aluminum, the processing method of the curved plate 47 can be easily and inexpensively manufactured.
Further, since the suction plate 160 is attached only by pressing with the stopper 170 without using screwing, it is easy to replace the combination of the curved plate 47 and the suction plate 160, and the assembly method. Is easy and cheap to manufacture.
Since the cross-sectional shape of the upper surface suction groove 162 of the suction plate 160 is arcuate and there are no corners in the recesses, even if ink, paste, or dust adheres to the inside of the upper surface suction groove 162, these unnecessary substances are brushed or washed. Can be easily removed.
By manufacturing the suction plate 160 in which the position and length of the upper surface suction groove 162 are changed, it is possible to print on the work 49 of any size without changing other parts of the curved surface jig 41. ..

*** Other configurations ***
Hereinafter, the points different from the above-described embodiment will be described.

FIG. 20 is a configuration diagram of a side surface in which a suction plate 160 is fixed to a curved plate 47 of a curved jig 41 with a clasp 170.
The curved surface jig 41 of (a) has a flat surface in the center and curved surfaces at both ends.
The curved surface jig 41 of (b) has a curved surface in the center and flat surfaces at both ends.
The curved surface jig 41 of (c) has a downward convex curved surface.
The curved surface jig 41 of (d) has an upwardly convex curved surface and a downwardly convex curved surface.
The curved surface jig 41 of (e) has an upward convex curved surface in the center and a downward convex curved surface at both ends.

By combining convex processing, concave processing, or bending processing in the bending processing of the curved plate 47, the curved plate 47 as shown in FIG. 20 can be formed, and convex printing or concave printing can be performed. Since the suction plate 160 is a flat plate and follows the curved surface of the curved plate 47, the same suction plate 160 can be used for either convex printing or intaglio printing.
Depending on the shape of the curved plate 47, the suction plate 160 may be difficult to follow the curved plate 47, but the air in the lower surface suction groove 161 of the suction plate 160 is sucked, so that the suction plate 160 adheres to the curved plate 47. Is promoted. It is preferable to form a lower surface suction groove 161 in the left-right direction in a portion where the suction plate 160 is difficult to follow the curved plate 47.

FIG. 21 is another example of the curved surface jig 41.
The curved plate 47 of FIG. 21 has a curved surface in the front-rear direction and also has a curved surface having a radius R in the left-right direction. The curved plate 47 has the same curved surface as the outer surface of the donut or tire. The curved surface of the curved plate 47 is a donut-shaped torus shape obtained by rotating an arc having a radius R with a rotation axis orthogonal to the central axis of the arc having a radius R.
The screen 96 is on a straight line in the front-rear direction and has a curved surface having a radius R only in the left-right direction.
Further, the tip of the squeegee 92 has a curved end face having a radius R in the left-right direction.
As described above, by forming a surface having a radius R in the left-right direction with respect to the curved plate 47, the screen 96, and the squeegee 92 and mounting the surface on the screen printing device 100, the curved plate 47, the screen 96, and the squeegee 92 are curved not only in the front-rear direction but also in the left-right direction. Screen printing can be performed on the work 49 having a curved surface.
A suction plate that is in close contact with the upper surface of the curved plate 47 may be fixed to the curved plate 47 of the curved jig 41 in FIG. 21.

The curved plate 47 does not have to be aluminum, and may be an aluminum alloy. It is preferable to form an anodized film on the surface of aluminum or an aluminum alloy to improve corrosion resistance and wear resistance.
The curved plate 47 may be stainless steel, iron, copper, or another metal plate.
The curved plate 47 may be a resin plate or a ceramic plate as long as the strength is maintained. The curved plate 47 does not have to have a constant thickness, and the upper surface of the curved plate 47 may have the same curved surface as the curved surface of the work.
The suction plate 160 does not have to be a resin plate, but may be an elastic metal plate or a spring plate. The thickness of the suction plate 160 is constant, but the thickness of the suction plate 160 does not have to be constant. By combining the curved plate 47 and the suction plate 160, the upper surface of the suction plate 160 is the same as the curved surface of the work. It suffices to have a curved surface.
The curved plate 47 and the suction plate 160 have the same length in the front-rear direction, but may have different lengths in the left-right direction. For example, "the length of the work 49 in the left-right direction> the length of the suction plate 160 in the left-right direction> the length of the curved plate 47 in the left-right direction" may be sufficient.

The pin hole 43 is preferably formed of a single row angular contact ball bearing, a double row angular contact ball bearing, or a combined angular contact ball bearing. The combined angular contact ball bearing is a combination of a plurality of single-row angular contact ball bearings, and is preferable to the single-row angular contact ball bearing because it can improve the rotational accuracy and rigidity of the shaft.

The two brackets 46 facing each other in the left-right direction may be connected by a metal square bar. By attaching the metal square bar in close contact with the lower surface of the curved plate 47, it is possible to prevent the curved plate 47 from being deformed or twisted. The metal square bar and the two brackets 46 may be configured as one component.
Three or more brackets 46 may be provided on one side. In order to reduce the weight, it is preferable to provide two or three brackets 46 on one side. In order to fix the pin insertion member 42 in an accurate position, it is preferable to provide the bracket 46 at the position where the pin insertion member 42 is fixed, that is, at the center position of the guide rail 45.

The number of clasps 170 does not have to be three on each side. Depending on the size of the curved plate 47 and the suction plate 160, the number of stoppers 170 may be one or more on each side.
The clasp 170 does not have to be made of metal, and may be made of resin.
The clasp 170 does not have to be U-shaped and may have a knob like a double clip or an eyeball clip. If there is a knob, the clasp 170 can be easily attached and detached.

A clasp 170 may be previously fixed to one end of the curved plate 47 with a screw or an adhesive. If the clasp 170 is fixed in advance to one end of the curved plate 47, the clasp 170 can be fixed by simply inserting the one end of the suction plate 160 into the clasp 170. After that, the other ends of the curved plate 47 and the suction plate 160 may be sandwiched and fixed by the clasp 170.
Alternatively, the clasps 170 may be fixed in advance to the ends on both sides of the curved plate 47 with screws or adhesives. When the clasps 170 are fixed to the ends on both sides of the curved plate 47 in advance, the suction plate 160 is manually curved so that the ends on both sides of the suction plate 160 become the ends on both sides of the curved plate 47. The suction plate 160 can be fixed by simply inserting it into a certain stopper 170 at the same time.

Embodiment 8.
In this embodiment, the differences from the above-described embodiment will be mainly described.
*** Explanation of configuration ***
A configuration of the screen printing device 100 using the work operating device 200 will be described with reference to FIGS. 22, 23, 24, 25, 26, 27, 28, and 29.
22, FIG. 23, FIG. 24, and FIG. 25 are detailed block diagrams.
25, 26, 27, 28, and 29 are simplified configuration diagrams of FIGS. 22, 23, 24, and 25.

<< Anti-slip mechanism 205 >>
The screen printing device 100 has an upper belt fixing portion 99, an upper belt 201, a lower belt 202, and a micrometer 95 as the anti-slip mechanism 205.
The upper belt fixing portion 99 is a metal bar provided between two pillar frames 53 in the front-rear direction.
The upper belt fixing portion 99 is at the same height as or substantially the same height as the frame 98 of the screen 96.
The upper belt 201 is a timing belt attached to the lower surface of the upper belt fixing portion 99.
The lower belt 202 is a timing belt attached to the upper surface of the edge of the curved surface jig 41.
The upper belt 201 and the lower belt 202 exist at two locations on the left and right.
The upper belt 201 is an elongated timing belt in the front-rear direction of the left and right upper belt fixing portions 99.
The lower belt 202 is an elongated timing belt located in the front-rear direction of the edge of the curved surface jig 41.
The upper belt 201 and the lower belt 202 are formed with irregularities that mesh with each other in parallel in the left-right direction.
Since the unevenness of the upper belt 201 and the lower belt 202 mesh with each other during printing, the screen 96 and the curved surface jig 41 do not slip in the front-rear direction, and the printing position of the print pattern does not shift.
The micrometer 95 adjusts the height position of the upper belt fixing portion 99.
The height of the upper belt fixing portion 99 is adjusted by the micrometer 95 so that the uneven engagement between the upper belt 201 and the lower belt 202 becomes accurate.

<< Carry-in / out mechanism 60 >>
The screen printing device 100 has a loading / unloading mechanism 60 for loading / unloading the curved surface jig 41 and the work 49 to the printing position.
The carry-in / out mechanism 60 has a table 61 capable of moving the base 51 in the front-rear and lateral directions.
On the table 61, pin holding portions 130 are arranged at two locations on the left and right.
A posture holding mechanism 270 is arranged at one central location on the table 61.
A brake mechanism 260 is arranged on one of the pin holding portions 130.

<< Pin holding part 130 >>
The screen printing apparatus 100 has a pin holding portion 130 that movably holds the fulcrum pin 87 in the vertical direction and the front-back direction.
The pin holding portions 130 are present on both the left and right sides of the curved surface jig 41.
The pin holding portion 130 has a vertical linear guide 210, a front-rear linear guide 230, and a front-rear base 241.
The vertical linear guide 210 stands upright from the table 61.
The vertical linear guide 210 holds the front-rear linear guide 230 so as to be freely movable in the vertical direction.
The front-rear linear guide 230 holds the front-rear base 241 so as to be freely movable in the front-rear direction.
A fulcrum pin 87 is attached to the tip of the front-rear base 241.

A pin insertion member 42 is fixed to the lower surface of the curved surface jig 41 at the center in the front-rear direction.
The pin insertion material 42 is formed with a pin hole 43 through which the fulcrum pin 87 is passed.
The pin insertion member 42 is rotatable with respect to the front and rear bases 241 around the fulcrum pin 87.
If the pin insertion member 42 rotates, the curved surface jig 41 also rotates.

The pin holding portion 130 attaches the curved surface jig 41 to the table 61 and the housing 50 so as to be freely movable in the vertical and front-back directions, and is attached so as to be freely rotatable around the fulcrum pin 87.

<Origin return mechanism>
The pin holding portion 130 has an origin return plate 244 and an origin return metal fitting 245 as an origin return mechanism.
As shown in FIG. 26, the origin return plate 244 is fixed to the front wall of the front-rear base 241.
As shown in FIGS. 28 and 29, the origin return plate 244 is a metal plate extending in the left-right direction orthogonal to the front-rear direction.
The origin return metal fitting 245 is fixed to the tip of a pin of the front-rear cylinder 240.
When the pins of the front-rear cylinder 240 are fully extended, the home-return metal fitting 245 does not come into contact with the home-return plate 244, and the front-rear base 241 is in a state where it can freely move in the front-rear direction.
When the origin return metal fitting 245 is pulled back backward by the front-rear cylinder 240, the origin return metal fitting 245 hits the origin return plate 244 and moves the origin return plate 244 rearward. Since the origin return plate 244 is fixed to the front / rear base 241, when the origin return metal fitting 245 pulls the front / rear cylinder 240 back to the leftmost position, the front / rear base 241 is also moved to the leftmost position. This position is called the origin.
The origin refers to the printing start position of the fulcrum pin 87 in the front-rear linear guide 230 in the front-rear direction.

<< Brake mechanism 260 >>
FIG. 27 is a diagram showing a brake mechanism 260 from which a part of the pin holding portion 130 is removed.
The brake mechanism 260 has a brake plate 261.
As shown in FIG. 27, the brake plate 261 is a flat metal plate fixed to the back surface of the curved surface jig 41.
The brake plate 261 is located at the center of the curved surface jig 41 in the front-rear direction.
The upper end of the brake plate 261 is fixed to the back surface of the curved surface jig 41.
The lower end of the brake plate 261 has a semicircular shape.
As shown in FIG. 28, the brake plate 261 is arranged parallel to the front-rear direction.

The brake mechanism 260 has a brake base 262 and a brake cylinder 265.
The brake pedestal 262 is a pedestal fixed to the front and rear pedestals 241.
As shown in FIG. 28, the brake base 262 is fixed inward from the side wall of the front and rear bases 241.
The brake base 262 has a concave groove 263 in the front-rear direction.
The semicircular lower end of the brake plate 261 is inserted into the groove 263.
The brake cylinder 265 is fixed to the brake base 262.
The brake cylinder 265 has a pin that pushes the brake plate 261 outward.
As shown in FIG. 29, the pin of the origin return fitting 245 exists at the same position as the fulcrum pin 87 in the front-rear direction in a plan view.
When the pin of the brake cylinder 265 pushes the brake plate 261 outward, the brake plate 261 is elastically deformed and the tip of the brake plate 261 is pressed against the inner wall of the groove 263.
When the tip of the brake plate 261 is pressed against the inner wall of the groove 263, the brake plate 261 and the groove 263 are in close contact with each other, so that the curved surface jig 41 cannot rotate about the fulcrum pin 87. That is, the rotation of the curved surface jig 41 is braked.
The brake mechanism 260 is a mechanism that suppresses the rotation of the curved surface jig 41 that can rotate around the fulcrum pin 87.

<< Posture holding mechanism 270 >>
The posture holding mechanism 270 is arranged in the center of the table 61.
The posture holding mechanism 270 has a vertical cylinder 220 and a posture holding roller 250.
The upper and lower cylinders 220 stand upright from the table 61.
The upper and lower cylinder 220 holds the posture holding roller 250 so as to be movable in the vertical direction.
There are two posture holding rollers 250 in the front-rear direction.
The center position of the two posture holding rollers 250 in the front-rear direction is the same as or substantially the same as the position of the origin of the fulcrum pin 87, that is, the printing start position.
The front posture holding roller 250 is arranged at a higher position than the rear posture holding roller 250.
The angle between the straight line connecting the rotation axis of the front posture holding roller 250 and the rotation axis of the rear posture holding roller 250 and the horizon is 2 degrees or more and 10 degrees or less, preferably 4 degrees or more and 8 degrees or less, and 6 Degree is suitable.
When the posture holding roller 250 is raised by the upper and lower cylinders 220, the two posture holding rollers 250 hit the curved surface jig 41 on the back surface, and the two posture holding rollers 250 determine the posture of the curved surface jig 41.
As shown in FIG. 31, since the front posture holding roller 250 is arranged at a position higher than the rear posture holding roller 250, the curved surface jig 41 is tilted backward by an angle α and is slightly lowered backward. Become the posture of. The posture of the curved surface jig 41 is called the original posture.
The original posture means a posture in which the curved surface jig 41 carries in and out the work.
The posture holding mechanism 270 is a mechanism for holding the posture of the curved surface jig 41 while the curved surface jig 41 is moving.
The posture holding mechanism 270 is a mechanism that keeps the posture of the curved surface jig 41 in the original posture when the fulcrum pin 87 is at the origin.

*** Explanation of operation ***
A work operation method and a printing method will be described with reference to FIG. 30.
The following operations are executed by the control unit 110 provided in the screen printing device 100.
As a premise, it is assumed that the control unit 110 has the following settings.
The printing unit 90 is arranged at the printing start position in the rear direction.
The lateral moving portion 70 is retracted in the forward direction.
Further, the front and rear pedestals 241 are set at the origin by the brake mechanism 260.
Further, the posture holding mechanism 270 brings the curved surface jig 41 into the original posture.

Step S41: Work set process The work 49 is placed on the curved surface jig 41 at the print start position in the rear direction.
Since the curved surface jig 41 is in the original posture slightly downward to the left, it is easy to place the curved surface work 49 on the curved surface jig 41 from the front.

Step S42: Table moving process The control unit 110 moves the table 61 in the front lateral direction by the posture holding mechanism 270 while maintaining the original posture of the curved surface jig 41 (arrow A1 in FIG. 31), and print start position. Position to.
As shown in FIG. 31, the curved surface jig 41 moves in the front-lateral direction while maintaining the original posture tilted backward by an angle α.
Even if the work 49 slips off during movement, the laterally moving portion 70 is retracted in the forward direction, so that the work 49 does not collide with the laterally moving portion 70.
The state shown in FIG. 32 is a state in which the work 49 is carried in and positioned at the printing start position.
The printing start position is a position calculated in advance so that the concave and convex positions of the upper belt 201 and the lower belt 202 match, and the concave and convex positions of the upper belt 201 and the lower belt 202 completely deviate from each other. It is a position where they engage with each other.
The control unit 110 moves the lateral movement unit 70 backward (arrow A2 in FIG. 31) and positions the lateral movement unit 70 at the printing start position.
The lateral moving portion 70 is positioned downward behind the curved surface jig 41.

Step S43: Step of releasing the posture holding of the curved surface jig The control unit 110 lowers the posture holding roller 250 by the upper and lower cylinders 220 (arrow A3 in FIG. 31).
Therefore, the curved surface jig 41 is in a state where it can swing around the fulcrum pin 87.

Step S44: Ascending step of the curved surface jig The control unit 110 raises the pressure roller 73 by the roller upper and lower pins 72 (arrow A4 in FIG. 31).
By this rise, the curved surface jig 41 is lifted upward, and the unevenness between the upper belt 201 and the lower belt 202 is accurately meshed without any deviation.
The step of releasing the posture holding of the curved surface jig and the step of raising the curved surface jig may be executed at the same time.

FIG. 33 shows a state at the start of printing when the ascending step of the curved surface jig is completed.
The fulcrum pin 87 is at the lowest point during the printing operation in the vertical direction.
The front-rear linear guide 230 is at the lowest point during printing operation in the up-down linear guide 210.
The front and rear pedestals 241 are at the origin. That is, the front-rear table 241 is the rearmost in the front-rear linear guide 230.
The curved surface jig 41 and the pin insertion member 42 are tilted forward by an angle θ (+ θ) with respect to the front-rear base 241 about the fulcrum pin 87.

Step S45: The printing process control unit 110 operates the front and rear cylinders 240 to pull out the origin return metal fitting 245 forward (arrow A5 in FIG. 31).
In this way, the curved surface jig 41 and the pin insertion member 42 can move in the forward direction.
The control unit 110 moves the printing unit 90 in the printing direction, that is, in the front lateral direction (arrow A6 in FIG. 33), and starts printing by the printing unit 90.
The control unit 110 also moves the lateral movement unit 70 by the same amount in the front lateral direction (arrow A6 in FIG. 33).
The place where the upper belt 201 and the lower belt 202 mesh with each other also moves in the front lateral direction.

The fulcrum pin 87 moves up in the vertical direction from the start of printing (arrow A7 in FIG. 33).
The front-rear linear guide 230 moves upward from the start of printing (arrow A8 in FIG. 33).
The front-rear table 241 moves before the start of printing (arrow A9 in FIG. 33).
The angle θ between the pin insertion material 42 and the front-rear base 241 is smaller than that at the start of printing (arrow A10 in FIG. 33).

That is, it changes as follows from the start of printing to the printing intermediate point.
The fulcrum pin 87 moves up in the vertical direction.
The front-rear linear guide 230 moves from bottom to top in the up-down linear guide 210.
The front-rear base 241 moves from the rear to the front in the front-rear cylinder 240.
The angle θ between the pin insertion member 42 and the front-rear base 241 is reduced.

FIG. 34 shows the state of the printing intermediate point.
At the printing intermediate point, the fulcrum pin 87 is at the highest point in the vertical direction.
At the printing intermediate point, the front-rear linear guide 230 is at the highest point in the vertical linear guide 210.
At the printing intermediate point, the front-rear table 241 is at the intermediate point in the front-rear cylinder 240.
At the printing intermediate point, the angle θ between the pin insertion material 42 and the front-rear table 241 becomes 0 degrees.

From the printing intermediate point to the end of printing, the changes are as follows.
The fulcrum pin 87 moves downward in the vertical direction (arrow A11 in FIG. 34).
The front-rear linear guide 230 moves from top to bottom in the vertical linear guide 210 (arrow A12 in FIG. 34).
The front-rear base 241 moves from rear to front in the front-rear cylinder 240 (arrow A13 in FIG. 34).
The angle θ between the pin insertion member 42 and the front-rear base 241 decreases to a negative value (arrow A14 in FIG. 35).

FIG. 35 shows the printing end state.
The fulcrum pin 87 is at the lowest point during the printing operation in the vertical direction.
The front-rear linear guide 230 is at the lowest point during printing operation in the up-down linear guide 210.
The front-rear base 241 is at the frontmost position in the front-rear cylinder 240.
The pin insertion member 42 is tilted rearward by an angle θ (−θ) with respect to the front and rear pedestals 241 with respect to the fulcrum pin 87.

Step S46: Release step When the printing unit 90 moves to the front end and printing is completed, the control unit 110 lowers the roller upper / lower pin 72 (arrow A15 in FIG. 35).
When the roller upper / lower pin 72 descends, the curved surface jig 41 moves downward due to gravity, the upper belt 201 and the lower belt 202 are disengaged, and the curved surface jig 41 returns to a swingable state.

Step S47: Brake operation process The control unit 110 operates the brake mechanism 260.
The control unit 110 extends the pin of the brake cylinder 265 and presses the brake plate 261 against the groove 263.
Therefore, the curved surface jig 41 changes from a swingable state to a swingable state.

Step S48: Home-returning process The control unit 110 operates the home-returning mechanism.
The control unit 110 pulls the pins of the front and rear cylinders 240 back to the origin. When the origin return bracket 245 at the tip of the pin hits the origin return plate 244, the front and rear bases 241 slide the front and rear linear guides 230 and are pulled back to the origin together with the pull back of the pin.
Since the curved surface jig 41 is in a state where it cannot swing due to the brake mechanism 260, the curved surface jig 41 does not swing and collide with other parts when moving to the origin.
By the origin return step, the fulcrum pin 87 returns to the printing start position in the front-rear linear guide 230.

Step S49: Brake release step The control unit 110 pulls back the pin of the brake cylinder 265 and releases the brake after the curved surface jig 41 returns to the origin.
The curved surface jig 41 returns to a swingable state.

Step S50: Posture holding step of the curved surface jig The control unit 110 operates the posture holding mechanism 270.
The control unit 110 raises the posture holding roller 250 by the upper and lower cylinders 220.
The curved surface jig 41 is in the original posture and cannot swing around the fulcrum pin 87.
The brake release step and the posture holding step may be executed at the same time.
Since the posture holding mechanism 270 is a mechanism that keeps the posture of the curved jig 41 in the original posture when the fulcrum pin 87 is at the origin, in the posture holding process, the fulcrum pin 87 returns to the origin by the origin return step. Is executed from.

Step S51: Table return step The control unit 110 moves the table 61 in the rear lateral direction, and carries out the curved surface jig 41 and the work 49.
The control unit 110 moves the printing unit 90 in the rear lateral direction and arranges the printing unit 90 at the printing start position in the rear direction.
The control unit 110 retracts the lateral movement unit 70 in the forward direction.
After that, the work 49 is removed.
In this way, the screen printing device 100 returns to the printing start state.

<< Features >>
The features of the work operation device of this embodiment are as follows.

The pin holding portion 130 has a vertical linear guide 210 that holds the fulcrum pin 87 so as to be movable in the vertical direction.

The pin holding portion 130 has an upper and lower cylinder 220 that moves the fulcrum pin 87 upward.

The pin holding portion 130 has a front-rear linear guide 230 that holds the fulcrum pin 87 so as to be movable in the front-rear direction.

The pin holding portion 130 has a front-rear cylinder 240 that moves the fulcrum pin 87 in the front-rear direction.

The pin holding portion 130 has an origin return mechanism for returning to the origin which is the printing start position of the fulcrum pin 87 in the front-rear linear guide 230.
The origin return mechanism has an origin return metal fitting 245 that returns the fulcrum pin 87 to the origin.

Further, it has a brake mechanism 260 for preventing the curved surface jig 41 from rotating around the fulcrum pin 87.

The upper and lower cylinder 220 has a posture holding roller 250 at its tip that holds the posture of the curved surface jig 41.

The features of the work operation method of this embodiment are as follows.
The curved surface jig 41 holding the work 49 is rotatably held by the fulcrum pin 87.
Further, the fulcrum pin 87 is held by the vertical linear guide 210 so as to be movable up and down, and the fulcrum pin 87 is held so as to be movable back and forth by the front-rear linear guide 230.
Then, while rotating the curved surface jig 41 with the fulcrum pin 87 and moving the position of the fulcrum pin 87 up and down and back and forth, a horizontal plane appears on the work 49 from one end to the other end of the work 49.
The movement of the fulcrum pin 87 during printing is passive rather than active. The vertical linear guide 210 and the front-rear linear guide 230 absorb the movement of the fulcrum pin 87.

*** Effect of Embodiment 8 ***
According to this embodiment, since the anti-slip mechanism 205 is provided, the print pattern can be accurately printed on the curved work.
When printing on a curved work with a flat screen, the length of the screen 96 in the front-rear direction does not match the length of the work 49 in the front-back direction. However, since the fulcrum pin 87 is held so as to be movable in the vertical and front-back directions, no deviation occurs in the printing direction even when printing on a curved work with a flat screen.
Since the pin holding portion 130 has the vertical linear guide 210, it is possible to absorb the vertical movement of the fulcrum pin 87.
Since the pin holding portion 130 has the front-rear linear guide 230, it is possible to absorb the discrepancy in the lengths of the screen 96 and the work 49 in the front-rear direction.
Since there is a brake mechanism 260, the curved surface jig 41 does not sway when the curved surface jig 41 is moved when returning to the origin.
Since there is a posture holding mechanism 270, the curved surface jig 41 does not sway when the loading / unloading mechanism 60 for loading / unloading the work 49 operates.

*** Other configurations of Embodiment 8 ***
<< Anti-slip mechanism 205 >>
As shown in FIGS. 36, 37, and 38, the upper belt 201 may be provided directly on the frame 98 of the screen 96. The above-mentioned upper belt fixing portion 99 is unnecessary.
The upper belt 201 is a timing belt attached to the lower surface of the frame 98 of the screen 96.
The lower belt 202 is a timing belt attached to the upper surface of the edge of the curved surface jig 41.
The lower belt 202 is arranged at a position corresponding to the upper belt 201 of the frame 98 of the screen 96.
The upper belt 201 and the lower belt 202 exist at two locations on the left and right.
The upper belt 201 is an elongated timing belt in the front-rear direction of the left and right frames 98 of the screen 96.
The lower belt 202 is an elongated timing belt located in the front-rear direction of the edge of the curved surface jig 41.
The upper belt 201 and the lower belt 202 are formed with irregularities that mesh with each other in parallel in the left-right direction.
Since the unevenness of the upper belt 201 and the lower belt 202 mesh with each other during printing, the screen 96 and the curved surface jig 41 do not slip in the front-rear direction, and the printing position of the print pattern does not shift.

The anti-slip mechanism 205 has a frame fixing portion 91 and a micrometer 95.
The frame fixing portion 91 is a fixing bracket for fixing the corners of the frame 98 of the screen 96 to the four pillar frames 53.
The micrometer 95 is provided in the frame fixing portion 91 and adjusts the height position of the frame fixing portion 91.
The height of the frame 98 of the screen 96 is adjusted by adjusting the height of the frame fixing portion 91 with the micrometer 95.
By adjusting the height of the frame 98 of the screen 96, the uneven engagement between the upper belt 201 and the lower belt 202 becomes accurate.

As the anti-slip mechanism 205, either the upper belt 201 or the lower belt 202 may be provided.
As the anti-slip mechanism 205, the surfaces of the upper belt 201 and the lower belt 202 may be provided with random and fine irregularities like the surface of sandpaper.
As the anti-slip mechanism 205, the surfaces of the upper belt 201 and the lower belt 202 may be sandblasted to provide irregularities on the surfaces of the upper belt 201 and the lower belt 202.

As the anti-slip mechanism 205, belts having no unevenness such as the upper belt 201 and the lower belt 202 may be used.
For example, a plate-shaped belt having a polished surface may be used as the upper belt 201, and a non-slip urethane rubber, silicon, or other resin belt may be used as the lower belt 202.
On the contrary, a plate-shaped belt having a polished surface may be used as the lower belt 202, and a non-slip urethane rubber, silicon, or other resin belt may be used as the upper belt 201.
When using the anti-slip mechanism 205 with unevenness, if the printing start position is different, there is no guarantee that the concave and convex positions of the upper belt 201 and the lower belt 202 will match exactly, so it is necessary to adjust the printing start position. There is. If the anti-slip mechanism 205 having no unevenness or the anti-slip mechanism 205 having unevenness without meshing is used, there is no concern that the unevenness does not mesh even if the printing start position changes, and it is not necessary to adjust the printing start position.

As the anti-slip mechanism 205, instead of arranging the belt, unevenness may be provided directly on the surface of the curved surface jig 41, and unevenness may be provided directly on the lower surface of the upper belt fixing portion 99 or the frame 98.
As the anti-slip mechanism 205, there may be one that increases friction between the upper belt fixing portion 99 or the frame 98 and the curved surface jig 41.
The anti-slip mechanism 205 may be any as long as it prevents the upper belt fixing portion 99 or the frame 98 and the curved surface jig 41 from slipping.

Even if there is no front-rear linear guide 230 and only the anti-slip mechanism 205 exists, there is an effect that the screen 96 and the curved surface jig 41 do not slip in the front-rear direction, and the deviation of the printing position of the print pattern is reduced.
Even if the anti-slip mechanism 205 does not exist, the pin holding portion 130 holds the fulcrum pin 87 so as to be movable in the vertical and front-back directions, so that the screen 96 and the curved surface jig 41 do not slip in the front-back direction. It has the effect of eliminating the deviation of the print position of the print pattern.

An example has been described in which the vertical linear guide 210 holds the front-rear linear guide 230 so as to be movable up and down, and the front-rear linear guide 230 holds the fulcrum pin 87 so as to be movable back and forth.
On the contrary, the front-rear linear guide 230 may hold the vertical linear guide 210 so as to be movable back and forth, and the vertical linear guide 210 may hold the fulcrum pin 87 so as to be movable up and down.

The origin return plate 244 may be omitted if the shape of the origin return bracket 245 is changed so that the origin return bracket 245 is directly hooked on the front wall of the front / rear base 241.

The brake mechanism 260 may be any as long as it can suppress the rotation of the curved surface jig 41.
Instead of pushing the brake plate 261 with the brake cylinder 265 to suppress the rotation, the brake plate 261 may be pulled with the brake cylinder 265 to suppress the rotation.
When the brake plate 261 is pulled by the brake cylinder 265 to suppress rotation, a through hole is provided in the brake plate 261, the pin of the brake cylinder 265 is passed through the through hole, and a collar-shaped pull plate is fixed to the outer periphery of the pin at the pin tip. , It is better to pull the edge of the through hole with a pull plate.

The posture holding mechanism 270 may be any one that can hold the posture of the curved surface jig 41.
For example, there may be three or more posture holding rollers 250 instead of two posture holding rollers 250.
Further, instead of arranging the posture holding roller 250, two front and rear columns may be arranged.
The heights of the two posture holding rollers 250 of the posture holding mechanism 270 may be the same.

If the posture holding mechanism 270 can hold the posture of the curved surface jig 41 during the origin return step, the brake mechanism 260 may be omitted. If the posture holding step is executed before the origin return step, the posture holding roller 250 lifts the displaced position instead of the original position where the curved jig 41 touches when it is at the origin. In this way, when the curved surface jig 41 is returned to the origin while the curved surface jig 41 is lifted at the displaced position at the end of printing, the curved surface jig 41 comes into contact with other parts. If there is nothing to do, the brake mechanism 260 may be omitted.

The number of pin holding portions 130 may be one or three or more.
The number of brake mechanisms 260 may be plural.
The number of posture holding mechanisms 270 may be plural.

*** Supplement to the embodiment ***
In the embodiment, the case of the screen printing device 100 has been described, but the work operating device 200 can be used not only for the screen printing device 100 but also for working on a curved work. For example, the work operation device 200 can be used as a painting device, a surface processing device, or the like by using a painting unit, a surface processing unit, or the like instead of the printing unit 90.

The function of the control unit 110 may be realized by a combination of software and hardware. That is, a part of the control unit 110 may be realized by software, and the rest of the control unit 110 may be realized by hardware.

The embodiments are examples of preferred embodiments and are not intended to limit the technical scope of the invention. The embodiment may be partially implemented or may be implemented in combination with other embodiments. Further, the above-described embodiments may be combined.
The procedure described using a flowchart or the like is an example of the procedure of the method or program according to the present invention.

10 Suction mechanism, 11 Suction cylinder, 12 Fixture, 13 Suction tube, 14 Suction device, 15 Suction plate, 16 Suction port, 17 Suction groove, 21 Coupling part, 22 Wire, 23 pulley, 24 pulley, 25 pulley, 26 pulley , 27 Coupling, 31 Coupling, 32 Wire, 33 Pulley, 34 Pulley, 35 Pulley, 36 Pulley, 37 Coupling, 41 Curved Jig, 42 Pin Insert, 43 Pin Hole, 44 Holding Surface, 45 Guide Rail, 46 bracket, 47 curved plate, 48 center line, 49 work, 50 housing, 51 base, 52 support pillar, 53 pillar frame, 54 beam frame, 60 loading / unloading mechanism, 61 table, 62 support cylinder, 63 support pin, 64 Robo Cylinder, 70 Horizontal Movement, 71 Horizontal Movement Cylinder, 72 Roller Vertical Pin, 73 Pressurizing Roller, 74 Linear Guide, 81 Fixed Pillar, 82 Vertical Cylinder, 83 Vertical Pin, 84 Horizontal Arm, 85 Vertical Linear Guide, 86 Advance / Retreat Cylinder, 87 fulcrum pin, 90 printing part, 91 frame fixing part, 92 squeegee, 93 roller holding part, 94 facing roller, 95 micrometer, 96 screen, 97 robo cylinder, 98 frame, 99 upper belt fixing part, 100 screen printing Equipment, 110 control unit, 111 signal line, 120 rotation holding unit, 130 pin holding unit, 140 lateral movement mechanism, 141 pinching mechanism, 142 altitude determination unit, 143 pressurizing unit, 151 pin, 152 pin receiving material, 153 pin path Holes, 154 Side Plates, 160 Suction Plates, 161 Bottom Suction Grooves, 162 Top Suction Grooves, 164 Groove Communication Holes, 170 Clasps, 175 Countersunk Screws, 176 Through Holes, 200 Work Operation Devices, 201 Upper Belts, 202 Lower Belts, 205 Anti-slip mechanism, 210 vertical linear guide, 220 vertical cylinder, 230 front / rear linear guide, 240 front / rear cylinder, 241 front / rear stand, 244 origin return plate, 245 origin return bracket, 250 attitude holding roller, 260 brake mechanism, 261 brake plate, 262 Brake stand, 263 grooves, 265 brake cylinders, 270 attitude holding mechanism.

Claims (25)

In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
A work operation device provided with a lateral movement mechanism that moves the curved surface jig laterally from one end to the other end while rotating the curved surface jig and moving the position of the fulcrum pin only up and down . .. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The lateral movement mechanism is a work operation device provided with a holding mechanism for sandwiching the upper surface and the lower surface of the curved surface jig. The pinching mechanism is
An altitude determination unit that determines the height of the holding surface held by the holding mechanism of the curved surface jig, and
The work operation device according to claim 2, further comprising a pressurizing portion that pressurizes the curved surface jig and moves the curved surface jig to the altitude determination portion. The pressurizing section has two pressurizing rollers arranged in the lateral direction.
The work operation device according to claim 3, wherein the altitude determination unit has an opposed roller arranged so as to be in contact with a curved surface jig between two pressure rollers. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The fulcrum pin is a work operation device that holds the center of both the left and right sides of the curved surface jig. The work operation device according to claim 5, wherein the pin holding portion has an advancing / retreating cylinder for advancing / retreating the fulcrum pin. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The pin holding portion is a work operation device having a vertical linear guide that holds the fulcrum pin so as to be movable in the vertical direction. The work operation device according to claim 7, wherein the pin holding portion has an upper and lower cylinder for moving the fulcrum pin upward. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The pin holding portion is a work operation device having a pin receiving material that holds the fulcrum pin so as to be movable in an oblique direction. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The pin holding portion is a work operation device having a pin receiving material that movably holds the fulcrum pin in either the linear direction or the curved direction. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
The pin holding portion is
A vertical linear guide that holds the fulcrum pin so that it can be moved in the vertical direction,
A work operation device having a front-rear linear guide that holds the fulcrum pin so as to be movable in the front-rear direction. The work operation device according to claim 11, wherein the pin holding portion has a front-rear cylinder for moving the fulcrum pin in the front-rear direction. The work operation device according to claim 12, wherein the pin holding portion has an origin return mechanism for returning to the origin which is the printing start position of the fulcrum pin in the front-rear linear guide. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
A work operation device having a brake mechanism for preventing the curved surface jig from rotating around the fulcrum pin. In a work operation device used to work in the front-back direction with respect to a work having a curved surface.
A pin holding portion that rotatably holds a curved jig that holds the work on a curved surface with a fulcrum pin and movably holds the position of the fulcrum pin,
With a lateral movement mechanism that moves laterally from one end to the other end of the curved surface jig while rotating the curved surface jig and moving the position of the fulcrum pin.
Equipped with
A work operation device having a posture holding mechanism for holding the posture of the curved surface jig while the curved surface jig is moving. The work operation device according to any one of claims 1 to 15.
A screen printing device equipped with a printing unit that prints a screen on a workpiece held by a curved surface jig while moving the lateral movement mechanism. The curved surface jig that holds the work on the curved surface is rotatably held by the fulcrum pin, and the position of the fulcrum pin is movably held.
A work operation method in which a horizontal plane appears on the work from one end to the other end of the work while rotating the curved jig with a fulcrum pin and moving the position of the fulcrum pin only up and down . The curved surface jig that holds the work on the curved surface is rotatably held by the fulcrum pin, and the position of the fulcrum pin is movably held.
While rotating the curved surface jig with the fulcrum pin and moving the position of the fulcrum pin, a horizontal plane appears on the work from one end to the other end of the work.
Work operation in which two horizontally arranged pressure rollers and one opposing roller arranged between the two pressure rollers move horizontally while sandwiching a curved jig. Method. The curved surface jig that holds the work on the curved surface is rotatably held by the fulcrum pin, and the position of the fulcrum pin is held so as to be movable up and down and back and forth by the vertical linear guide and the front-back linear guide .
A work operation method in which a horizontal surface appears on the work from one end to the other end of the work while rotating the curved jig with a fulcrum pin and moving the position of the fulcrum pin. A curved jig that holds a workpiece with a curved surface.
A curved plate that holds the work and
With guide rails fixed on both sides of the curved plate ,
The guide rail is a curved surface jig having a pin hole in the center of the side for inserting a fulcrum pin that is the center of rotation of the curved surface jig. A curved jig that holds a workpiece with a curved surface.
A suction plate that holds the work and
A curved plate to which the suction plate is fixed and guide rails fixed to both sides of the curved plate are provided .
The guide rail is a curved surface jig having a pin hole in the center of the side for inserting a fulcrum pin that is the center of rotation of the curved surface jig. A curved jig that holds a workpiece with a curved surface.
A suction plate that holds the work and
With a curved plate to which the suction plate is fixed
Guide rails fixed on both sides of the curved plate,
With a clasp that fixed the suction plate and the curved plate by elastic force
Equipped with
The suction plate and the curved plate are curved jigs that are fixed only by the clasp . A method for manufacturing a curved surface jig that holds a workpiece having a curved surface.
Form a flat metal plate,
The metal plate is curved to form a curved plate,
Fix the pin insertion material to insert the fulcrum pin, which is the center of rotation of the curved surface jig, to the guide rail.
A method for manufacturing a curved jig that fixes the guide rails on both sides of the curved plate. A method for manufacturing a curved surface jig that holds a workpiece having a curved surface.
Form a flat metal plate,
The metal plate is curved to form a curved plate,
Form an elastic resin plate,
A hole and a groove are formed in the resin plate to form a suction plate, and the suction plate is formed.
A method for manufacturing a curved jig , in which one end of the suction plate is fixed to one end of the curved plate, and then the suction plate is curved to fix the other end of the suction plate to the other end of the curved plate. A method for manufacturing a curved surface jig that holds a workpiece having a curved surface.
Form a flat metal plate,
The metal plate is curved to form a curved plate,
Form an elastic resin plate,
A hole and a groove are formed in the resin plate to form a suction plate, and the suction plate is formed.
A method for manufacturing a curved surface jig in which the suction plate is curved to fix the suction plate and the curved surface plate only with a clasp.

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