JP3512503B2 - Pad printing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pad printing machine, and more particularly to a pad printing machine.
Is movably supported in the front-rear direction with respect to the frame,
Ink forming the print pattern attached to
A transfer pad for transferring and printing by pressing against a work at
An inset that is located at the retreat position of the transfer pad and contains the printing plate
A plate and an ink plate for applying ink to the printing plate
And a doctor blade that removes excess ink on the printing plate
And a pad printing machine having the same. 2. Description of the Related Art Conventionally, this type of pad printing machine has been
As shown in Japanese Utility Model Laid-Open No. 3-14360,
Front by a cylinder on the guide rod arranged in the frame
A slider slidable in the rear direction is provided.
Transfer pad, doctor blade and ink spray on ida
Are mounted so that they can move up and down,
Below the doctor blade and ink plate
An inset with a printing plate at the front and an ink reservoir at the rear
A plate is provided, and a front of the ink plate is
A work table is provided. And the slider
Is moved back and forth by the cylinder,
The transfer pad is between the upper position of the printing plate and the upper position of the work.
Reciprocating with the doctor blade and ink
Rate reciprocates between ink tray rear and front positions
The ink plate is used to enter the printing plate
The key is applied and the doctor blade is
Removes excess ink on the printing plate,
The printing pad descends from the position above the printing plate and the ink on the printing plate
Is transferred to the transfer pad, and then again at the position above the printing plate.
After returning, move to the upper position of the workpiece and roll at this position.
By lowering the photo pad and pressing it against the work,
It is configured to print the print pattern on the workpiece.
You. [0003] However, the above configuration has one
Transfer pad, doctor blade and ink
Attach the slider and move this slider back and forth with one cylinder.
The transfer pad, doctor blade and
And ink blades are moved by the same stroke.
The length of the ink tray from the above
If you need to print at a distance from the front,
Problem that cannot be printed on large workpieces
was there. That is, the transfer pad is positioned above the printing plate
The doctor blade and the ink blade
Position it in the ink reservoir at the back of the ink tray.
When the robot is positioned above the workpiece, the doctor
Place the blade and ink blade in front of the plate in front of the ink tray.
Transfer pad and doctor blade
And the distance from the ink plate to the front and back of the ink tray
The length of the ink tray
Cannot be printed on long, long workpieces.
there were. In this case, regardless of the size of the printing plate,
After lengthening the front and back of the plate, transfer pad and doctor
-Increase the distance between the blade and the ink plate.
If it is possible to print on a large work,
The ink tray must be formed longer than necessary in the front-rear direction.
Not only do they have to be long,
Therefore, the entire printing press becomes longer in the front-rear direction and becomes larger,
Can not be adopted because it requires a large installation space
There was a title. In order to solve this problem, for example, a guide
Two sliders are supported on the rod so that they can move back and forth,
The transfer pad is supported by one slider, and the other
The doctor blade and ink plate are supported by the rider.
The front and rear cylinders on each of the two sliders.
Each slide independently by these cylinders
While moving the slider on the transfer pad side.
Make the stroke faster by making it faster than the
The sliders in the retracted position.
In the forward position, the slider on the transfer pad side slides on the blade side.
It is known that it is configured to separate from the ride forward.
Have been. According to this configuration, the front and rear length of the ink tray is
Can not print on large work due to restrictions
Problems are resolved. [0006] However, this pad mark
In a printing press, the transfer pad side is
Slider, doctor blade and ink plate side slurry
To move back and forth independently at different speeds.
The slider on the transfer pad side
Returning too fast than the slider on the blade side
Or may collide with the slider on the
Ink scraping by blade was not uniform
Or the movement of both sliders is hindered.
Especially when printing at high speed on a large printing machine,
With general cylinders, it is very difficult to control the speed of both cylinders.
Therefore, expensive servo cylinders must be used.
And there is a problem that the cost increases. An object of the present invention is to use one cylinder.
Transfer pad doctor blade and ink plate
Can increase the stroke against
Transfer pad, doctor blade and ink sprayer
Transfer position at the forward position while the
Head, doctor blade and ink plate
Can be positioned at the same time, and the length of the ink tray is limited
Transfer printing on large workpieces without
Even if the moving speed of the cylinder is changed,
Transfer pad, doctor blade and ink at high speed
The relative relationship with the plate does not change,
High speed can be easily achieved, and the cost is reduced
Is to get a pad printing machine that can. [0008] In order to achieve the above object,
In addition, the present invention supports the frame so as to be movable in the front-rear direction.
That form a printed pattern that is carried and adhered to the surface.
Pressing the key on the work at the forward position to transfer and print
Pad and the transfer pad are disposed at the retracted position,
Ink for applying ink to the accommodated ink tray and the printing plate
Plate to remove excess ink on the printing plate
A pad printing machine provided with a
Can be moved in the front-back direction on the guide rod arranged on the frame
First and second sliders, and
Transfer pad to slider and doctor to second slider
Support each blade and ink plate, and
Move one of the first and second sliders back and forth.
Between the front and rear parts of the frame
And a first winding transmission in which an endless body is hung on a pair of large-diameter rotating wheels.
2nd endless body hung on a dynamic mechanism and a pair of small diameter rotating wheels
And a first and second hooking mechanism.
At least one of the rotating wheels in the front-rear direction in the transmission mechanism
And the endless transmission mechanism of the first winding transmission mechanism.
Body to the first slider, and the endless body of the second winding transmission mechanism.
When connected to the second slider so that they can rotate
When the first slider and the second slider are connected,
The positional relationship between the first and second
The slider and the second slider are close to each other, and the
The first slider and the second slider are set to separate from each other
It is characterized by the following. According to the above construction, for example, the cylinder
Is connected to a first slider, and the first slider is
Is moved from the retracted position to the advanced position,
The endless body of the first winding transmission mechanism connected to one slider rotates.
Will be turned over. By this rotation, the first winding transmission
Rotation of the second winding transmission mechanism integrally connected to the rotating body of the structure
The body is rotated, and the endless body of the second winding transmission mechanism is rotated.
And the second slider connected to the endless body is moved forward.
Will be. At this time, the rotating body of the second winding transmission mechanism
Is smaller than the diameter of the rotating body of the first winding transmission mechanism.
Therefore, the endless body of the second winding transmission mechanism is the first winding transmission mechanism.
Will rotate at a lower peripheral speed than the endless body. That
As a result, the first slider and the second slider
The slider of the first slider
Stroke larger than the stroke of the second slider,
In the advanced position, transfer the transfer pad with the doctor blade and ink.
Be positioned away from the plate forward
Is not limited by the front and back length of the ink tray.
Transfer printing can be performed on large workpieces. In the above cylinder, the first slider is moved forward.
By moving from the advanced position to the retracted position,
High peripheral speed of the first winding transmission mechanism connected to the rider
The end body is rotated, and with this rotation, the second winding transmission mechanism
An endless body with a low peripheral speed was rotated and connected to the endless body.
The second slider will be moved backward. This
In the retracted position, the transfer pad, doctor blade and
The ink plate is located at the close position. Further, the first slider can be moved by one cylinder.
While moving the first stroke, the first slider is constantly moved.
Peripheral speed of two endless bodies that rotate integrally with each other and have different peripheral speeds
An endless body with a low peripheral speed, connected to a fast endless body
Connected to the second slider to determine the difference between the peripheral velocities of both endless bodies.
The stroke of the second slider is
Is shorter than the circuit
The speed at low and high speeds
The relative relationship between the slider and the second slider,
Relative to the doctor blade and ink plate
The transfer function is invariable, which facilitates high-speed transfer printing.
It is possible to do. Embodiments of the present invention will be described below with reference to the drawings.
I do. FIG. 1 is a perspective view of a pad printing machine 1 according to the present invention.
As shown in FIG. 5, it is installed on the gantry 2 and protrudes forward.
It has a substantially inverted L-shaped case-like frame 3 in side view.
A front support plate 4 is provided at the front of the
The rear support plate 5 is set up
Between the front and rear support plates 4 and 5, a pair
Guide rods 6 and 6 are installed.
The first and second sliders 7, 8 are independent on the sliders 6, 6, respectively.
And is movably supported in the front-rear direction. The first slider 7 is different from the second slider
And the first slider 7
As shown in FIGS. 1 and 4, the first support shaft 9 and a pair of
The guide rods 10 are respectively suspended, and these support shafts
10 and the lower part of the guide rods 10, 10 are connected by a connecting plate 10a.
And silicon is mainly connected through the connecting plate 10a.
A soft transfer pad 11 made of rubber is attached.
You. As shown in FIGS. 1 and 5, the second slider 8 has
A second support shaft 12 and a pair of guide rods 12a, 1
2a are respectively suspended, and these second support shafts 12 and
The lower part of the guide rods 12a, 12a is connected via a connecting plate 12b.
While the doctor blade 15 is attached
A pair of third support shafts 13 hang down from the rear,
To the lower part of the third support shafts 13 via a connecting plate 13a.
The ink plate 16 is attached. Also, the above
Downward orientation of doctor blade 15 and ink plate 16
The printing plate 17 is accommodated in the front part, and the ink reservoir 1 is provided in the rear part.
An ink tray 18 having an ink tray 8a is provided.
A mounting table 19 for a work W is provided in front of the ink tray 18.
Have been. Then, on the rear wall of the first slider 7,
The mounting piece 20 is suspended, and the mounting piece is attached to the rear support plate 5.
The piston lock of the cylinder 21 for back and forth movement provided in
Connected to the node 22. Therefore, the first slide
The transfer pad 11 is operated by the cylinder 21
The upper position of the printing plate 17 which is the retracted position shown in FIG.
Between the forward position shown in FIG. 3 and the upper position of the workpiece W
Is reciprocated. The center of the first slider 7 is
For lifting and lowering a transfer pad using the first support shaft 9 as a piston rod
Is provided with a first elevating cylinder 23,
The guide rods 10, 10 together with the first support shaft 9 are
The transfer pad 1 is raised and lowered with respect to the
1 is above the printing plate 17 (retreat position) and above the work W
Position (forward position)
You. Also, as shown in FIG. 1 and FIG.
In the center of the front part, the second support shaft 12 is connected to a piston rod.
The second lifting cylinder 24 for lifting and lowering the doctor blade
The third support shafts 13 and 1 are provided at the rear center.
3 via the upper connecting rod 13b connecting these upper parts.
Third lifting cylinder 2 for raising and lowering the ink plate to be raised and lowered
5 is provided, and the doctor blade 15 is provided with a second lifting / lowering system.
Due to the operation of the cylinder 24, the upper part of the printing plate 17 is at the time of forward movement.
, And when it retreats, it moves down slightly and the tip
It comes into sliding contact with the surface. In addition, the ink
The rate 16 is adjusted so that the ink at the rear of the ink
From the inside of the ink reservoir 18a, the bottom surface of the ink tray 18 and the printing plate 1
7 moves along the upper surface. Further, the front support plate 4 has
The first slider 7 is moved to the forward position above the work as shown in
A front stopper 4a for stopping is provided, and a rear support is provided.
The second slider 8 is attached to the holding plate 5 as shown in FIG.
Stop at the retracted position above the ink reservoir 18a of the ink tray 18.
A rear stopper 5a for stopping is provided. Ma
1, 4 and 5 on the side of the frame 3.
As shown, the transfer pad 11 is in the retracted position and the advanced position.
Adjustment members such as limit switches that set the amount of downward movement
26, 26, when the doctor blade 15 is retracted.
Adjustment unit such as a cam for adjusting the sliding contact range with the printing plate 17
Material 27 and the ink plate 16 when the ink plate 16 advances.
For example, a cam for adjusting the amount of downward movement with respect to the
An adjusting member 28 is provided.
On the side, an operation panel 29 on which various operation members are arranged is provided.
Is provided. However, as shown in FIG. 1 and FIG.
The frame 3 is located at an upper position on one side in the frame 3.
A pair of large-diameter timing pins arranged between the front and rear
And the timing belt 33 is hung on the
One-wound transmission mechanism 30 and a pair of small-diameter timing pulleys 4
A second winding in which a timing belt 43 is hung on the first and second 42
A transmission mechanism 40 is provided. These first and second
Large and small diameter tie on the front side of the winding transmission mechanisms 30 and 40
Ming pulleys 31 and 41 are integrally connected to each other,
So that the small-diameter timing pulleys 31 and 41 rotate together
The large and small diameter timing pulley 32 on the rear side
42 are independently supported. This allows
Of the timing belt 33 in the first winding transmission mechanism 30
Timing in the second winding transmission mechanism 40 with rotation
The belt 43 rotates together with the timing bell.
G of the first winding transmission mechanism 40
Is lower than the peripheral speed of the tongue belt 33. Soshi
The timing belt 33 of the first winding transmission mechanism 30
The first slider 7 protrudes upward from the slider.
It is connected so as to be interlockable via a connecting rod 35, and the second winding
The second slider 7 is attached to the timing belt 43 of the transmission mechanism 40.
Via a connecting rod 45 projecting upward from the slider 8.
They are linked so that they can be linked. Also, when connecting
The positional relationship between the first slider 7 and the second slider 8 is
In the retracted position by the cylinder 1, the first slider 7 and the second
The slider 8 is in close contact with the slider 8 and the
Set so that the first slider 7 and the second slider 8 separate from each other
Have been. In the above embodiment, the first and second winding transmissions are used.
Toothed pulleys and toothed belts as the moving mechanisms 30 and 40
Although a belt transmission mechanism consisting of
For example, a belt transmission mechanism consisting of a flat belt
Or a chain drive mechanism may be used.
No. In this embodiment, the cylinder 21 is
When the first and second sliders 7 and 8 stop moving back and forth.
Braking mechanism 50 for preventing the impact
You. As shown in FIG.
Rotation of the timing pulley 32 on the rear side of the single-wound transmission mechanism 30
The brake disk 51 is integrally provided on the rotating shaft 34.
By applying a braking force to the rotation of the disc 51
Electromagnetic brakes for braking the forward and backward movements of the first and second sliders 7, 8
A rake 52 is provided. This electromagnetic brake 52
As the control means, as shown in FIG. 1 and FIG.
On the upper side of the timing belt 33 of the winding transmission mechanism 30
The projection 53 for detection is provided on the surface, and the timing belt 3
Positions before the forward end and the backward end of the projection 53 due to the movement of the third position
A detection lever 55 abutting when passing through the projection 53;
a, 56a, respectively.
In addition, the detection output from each of these variable resistors 55 and 56
The electromagnetic brake 52 is controlled based on the output signal.
ing. In this case, the detection lever of each of the variable resistors 55 and 56
-55a and 56a are swingably supported,
The timing belt 3 is always set by a return spring (not shown).
3, the detection levers 55a, 55a
6a swings when the projection 53 hits, and the lever
-55a and 56a swing according to the swing amount
Increasing the voltage to the electromagnetic brake 52 to gradually increase the braking force
On the other hand, each of the sliders 7 and 8 is
a maximum swing of the detection levers 55a and 56a contacting
The voltage to the electromagnetic brake 52 is reduced from the position immediately before the position.
In the maximum swing position of the detection lever 56a,
When the voltage to the magnetic brake 52 becomes zero,
The braking by the is released. The control means of the electromagnetic brake 52 is
In addition to using the above-described variable resistors 55 and 56, for example,
A detection body is appropriately provided on the timing belt side, and the detection
Limit switch and non-contact detection sensor for detecting body
ON / OFF of these switches or sensors using multiple
May be used to control the electromagnetic brake. Next, using the pad printing machine, the work W
The operation when performing transfer printing will be described. First, in the state shown in FIG. 1 and FIG.
The copying pad 11 is moved down by the first lifting cylinder 23
Being pressed against the upper surface of the printing plate 17 located below
As a result, the ink in the groove provided on the printing plate 17 is transferred.
The image is transferred to the pad 11. Next, the transfer pad 11
After being moved up to the original position by the lifting cylinder 23,
The first slider 7 moves forward by the moving cylinder 21.
When the transfer pad 11 is moved to a position above the work W,
At this position, it is again moved down by the first lifting cylinder 23.
And pressed against the work W, the pad 1
The ink transferred to 1 is transferred and printed on the work W
Will be. Thus, the first slider 7 moves forward.
At this time, the connecting rod 35 provided on the first slider 7
The timing belt 33 of the single-winding transmission mechanism 30 is pushed forward.
Will be rotated. This makes the first winding transmission
The large-diameter timing pulley 31 on the front side of the mechanism 30
The second winding transmission which is rotated and integrally connected to the pulley 31
Small-diameter timing pulley 41 on the front side of moving mechanism 40
Are simultaneously rotated, so that the torque in the second winding transmission mechanism 40 is
The imaging belt 43 is rotated together. This timing
With the rotation of the belt 43, the second switch is connected via the connecting rod 45.
The rider 8 is pulled and moves forward. In this case, the timing of the second winding transmission mechanism 40
Of the first pulling transmission mechanism 30
Since the diameter is smaller than the diameter of the pulley 41, the second winding transmission
The timing belt 43 of the mechanism 40 includes the first winding transmission mechanism 3.
It is rotated at a peripheral speed that is slower than the
You. As a result, the stroke of the first slider 7 is reduced to the second stroke.
Larger than the stroke of the rider 8,
2 Advance the slider 8 to move the doctor blade 15 and
The ink plate 16 moves from the rear position of the ink tray 18 to the front position.
During transfer, the transfer pad 11 moves
Can be moved longer. That is, in FIG.
As shown, the transfer pad 11 and the doctor
In contrast to the distance a between the blade 15 and the
Is the transfer pad 11 and the doctor break as shown in FIG.
The distance A between the transfer pad 11 and the transfer pad 11 increases.
Is positioned away from the doctor blade 15 forward.
Can be placed. This allows the ink tray 18
Transfer marking to large work W without restriction by front and rear length
Can be printed. On the other hand, the work W by the transfer pad 11
After printing on the transfer pad 11, the transfer pad 11
Return to the upper position of the work W again by the
Then, the first slider 7 is moved by the cylinder 21 to the printing plate 17.
To the retracted position above the. At this time, the first switch
With the retraction of the rider 7, the first and second winding transmission mechanisms 3
The second slider 8 also moves backward through 0 and 40. in this case
Also, the second slider 8 is connected to the first
The second rotating at a peripheral speed lower than that of the imming belt 33
Moved by the timing belt 43 of the winding transmission mechanism 40.
Therefore, as shown in FIG.
The slider 7 and the second slider 8 are retracted so as to come into close contact with each other.
Will be moved. When the second slider 8 moves forward, the
The ink is applied to the printing plate 17 by the plate 16.
And the doctor blade 15 is slightly
By being moved down, the tip of the blade 15 is
7 is in sliding contact with the upper surface of the printing plate 7, and excess ink on the printing plate 17 is removed.
Is done. In this embodiment, the cylinder 21
Of the first and second sliders 7 and 8 in forward and backward movements
When stopping at the position and the retreat position, the braking mechanism 50
By being provided, each stopper of each of the sliders 7 and 8 is provided.
The impact due to the contact with the pads 4a and 5a is reduced.
You. In this case, for example, as shown in FIG.
When the rider 7 moves forward, the first slider 7
The position before the forward position where the stopper stops against the stopper 4a.
And is attached to the timing belt 33 of the first winding transmission mechanism 30.
The projected protrusion 53 is attached to the variable resistor 56 on the rear side of the frame.
When the lever 56a hits the detection lever 56a,
It will be rocked to the position shown by the virtual line in FIG. This
Of the variable resistor 56 to the electromagnetic brake 52
An output signal is output and the brake 52
A resistance is applied to the disk 51 to perform braking. At this time,
The detection signal corresponding to the swing amount of the lever 56a is supplied to the variable resistor 5
6 to the electromagnetic brake 52,
To increase the voltage of the detection lever 56a in accordance with the swing amount of the detection lever 56a.
To increase the braking force,
Applying resistance to smooth the movement speed of the timing belt 33
Slow down. Thus, the first and second sliders 7, 8
Can be decelerated smoothly with a short braking distance,
When the slider 7 comes into contact with the stopper 4a,
The first and second sliders 7 and 8 can be almost shocked.
It becomes possible to stop at the forward position. The result
As a result, the impact due to the collision of the first slider 7 with the stopper 4a
Then, the soft transfer pad 11 trembles and is transferred to the surface thereof.
When bleeding occurs in transferred ink and transfer printing is performed on the work W
It is possible to prevent distortion from occurring. In particular,
Large printing presses have large strokes and large inertia.
Problem due to ink bleeding due to the above impact
Are remarkable, but the present invention solves this problem.
And eliminates the need for two expensive servo cylinders.
With a short braking distance for smooth deceleration and high speed
And cost can be reduced. The detection level of the variable resistor 56 is
From the position just before the maximum swing position of the bar 56a,
The voltage to the detection lever 56a is reduced.
At the maximum swing position, the voltage to the electromagnetic brake 52 becomes zero.
As a result, the braking by the brake 52 is released. to this
The sliders 7, 8 are moved backward by the cylinder 21.
Movement becomes possible. Further, the detection lever 56a is
A return spring (shown in FIG.
7) to return to the original position indicated by the solid line in FIG.
During the return movement to the original position, the electromagnetic brake 52 operates.
It does not move. On the other hand, when the first slider 7 is retracted,
By the variable resistor 55 located on the front side of the frame,
Operation similar to that of the variable resistor 56
For movement of each slider 7, 8 by electromagnetic brake 52
A braking force is applied, and the second slider 8 contacts the rear stopper 5a.
Slowly reduce the moving speed of both sliders 7 and 8 before hitting
Then, the second slider 8 can be moved without impact to the second slider 8.
The idler 8 can be stopped at the retracted position. In the above embodiment, the first slide
With a cylinder 7 for moving back and forth in the die 7
As described above, the cylinder 21 is attached to the first slider 7.
Of course, it may be provided on the second slider 8 instead.
You. As described above, according to the present invention, one
The first slider provided with the transfer pad and the drive
Second slide with a collector blade and an ink plate
One of the sliders at a fixed stroke
While moving, the first slider always rotates integrally,
Two endless bodies with different peripheral speeds
Connect and make the second slider an endless body with a low peripheral speed.
Connected to each other, and the difference between the peripheral speeds of both endless bodies
The slider stroke is different from the stroke of one slider
So that one cylinder
Moving the first slider and the second slider back and forth simultaneously
While the stroke of the first slider is
Can be larger than the stroke of
As a result, the transfer pad, the doctor blade and the
Forward position while positioning the
Then transfer the transfer pad to doctor blade and ink plate
Can be located at a position separated from the front
Large without being limited by the front and back length of the ink tray
It can be transferred and printed on the work. Moreover, the above series
Transfer at low and high speeds even if the speed of the
Pad, doctor blade and ink plate relative
The relationship does not change, making transfer printing faster.
Cost can also be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged vertical sectional side view of a main part according to a pad printing machine of the present invention. FIG. 2 is a schematic side view of the pad printing machine. FIG. 3 is an enlarged sectional view showing a state where the transfer pad is moved to a forward position. FIG. 4 is a sectional view taken along line XX of FIG. 3; FIG. 5 is a sectional view taken along line YY of FIG. 3; FIG. 6 is a sectional view taken along the line ZZ in FIG. 2; FIG. 7 is an enlarged front view of the variable resistor. [Description of Signs] 1 Frame 6, 6 Guide rod 7 First slider 8 Second slider 11 Transfer pad 15 Doctor blade 16 Ink plate 17 Printing plate 18 Ink tray 21 Cylinder 30 First winding transmission mechanism 31, 32 Large diameter timing Pulley 33 Timing belt 40 Second winding transmission mechanism 41, 42 Large diameter timing pulley 43 Timing belt W Work

Claims (1)

(57) [Claims 1] Transfer which is supported movably in the front-rear direction with respect to a frame, and which presses ink constituting a print pattern adhered to the surface to a work at an advanced position to transfer and print. A pad, an ink tray disposed at a retreat position of the transfer pad and containing a printing plate, an ink plate for applying ink to the printing plate, and a doctor blade for removing excess ink on the printing plate. A pad printing machine, comprising: a first slider and a second slider that are movable in a front-rear direction on a guide rod provided on the frame; a transfer pad is provided on the first slider; A doctor blade and an ink plate are supported on the second slider, respectively, and a cylinder for moving one of the first and second sliders back and forth is provided. ,
A first winding transmission mechanism in which an endless body is hung on a pair of large-diameter rotating wheels and a second winding transmission mechanism in which an endless body is hung on a pair of small-diameter rotating wheels between front and rear portions of the frame. The first and second winding transmission mechanisms are integrally connected with each other at least in one of the front and rear rotating wheels, and the endless body of the first winding transmission mechanism is a first slider. In addition, the endless body of the second winding transmission mechanism is connected to the second slider so as to be interlocked and rotatable, and at the time of the connection, the positional relationship between the first slider and the second slider is set back by the cylinder. A pad printing machine wherein the first slider and the second slider are set so as to be close to each other at a position, and the first slider and the second slider are set to be separated from each other at a forward position.