JPH0453945Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pad printing machine, particularly a manual pad printing machine suitable for printing relatively small quantities.

(Prior Art) A pad printing machine used for printing characters, figures, etc. on various articles first presses a flexible transfer pad made of silicone rubber or the like onto a printing plate (intaglio) coated with ink, and then The printing pattern engraved on the printing plate is printed on the printing material by pressing it onto the printing material, and for mass printing, the transfer pad, an ink plate for applying ink to the printing plate, and the stamp are used. Automatic types are widely used in which doctor blades are driven by motors, cylinders, etc. to scrape off excess ink applied to the plate.

Apart from this, a manual pad printing machine is also known as a simple pad printing machine for printing relatively small quantities. This consists of an operation member that horizontally moves either the transfer pad or a pedestal on which the printing plate and the printing material are juxtaposed to position the transfer pad above the printing plate and the printing material; and an operating member that presses against the printing material, and is configured to manually apply ink to the printing plate and scrape off excess ink.

Furthermore, as this type of manual pad printing machine, the transfer pad is moved in an arc by operating a lever, and in conjunction with this lever operation, the pedestal on which the printing plate and the printing material are juxtaposed is caused to move back and forth horizontally. The transfer pad is configured to be alternately pressed against the printing plate and the printing material, and the application of ink to the printing plate and the scraping off of excess ink are automatically performed by using the movement of the pedestal. There is something I did.

(Problems to be solved by the invention) However, among the above-mentioned conventional manual pad printing machines, the former requires the use of both hands to operate two operating members, and there is also a problem in applying ink to the printing plate. Since application and excess ink must be scraped off manually, it is extremely troublesome and has poor workability, resulting in a significant drop in productivity.

In addition, the latter type has excellent workability and productivity because all operations can be performed with a single lever operation, but since the transfer pad moves in an arc, it is difficult to press the transfer pad against the printing plate or substrate. It is pressed against these while shifting in the horizontal direction, and as a result, there is a drawback that high printing accuracy cannot be obtained.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the past, and to realize a manual pad printing machine of this type that has excellent workability and productivity and can achieve high printing accuracy. do.

(Means for solving the problem) That is, the pad printing machine according to the present invention has an ink tray storing a printing plate in the lower part of the main body, and
A slider is provided on the upper part of the main body so as to be capable of linear reciprocating motion in the horizontal direction, and one end of a handle for causing the slider to reciprocate in the horizontal direction is pivotably attached to the slider. The transfer pad, the ink plate, and the doctor blade are supported by the slider so as to be able to move up and down, respectively, and the transfer pad is moved above the installation position of the printing plate and the object juxtaposed thereto by the reciprocating movement of the slider. The ink plate and the doctor blade are moved reciprocatingly between the position above the printed matter and the printing plate and the printing medium are moved up and down by the swinging operation of the handle. is configured to move reciprocally within the ink tray.
Furthermore, a first cam mechanism that applies the ink stored in the ink plate to the printing plate during forward movement of the ink plate and moves the ink plate along a trajectory passing above the printing plate during backward movement, and a doctor blade; It is provided with a second cam mechanism that moves along a trajectory that passes above the printing plate during forward movement and slides into contact with the printing plate during backward movement.

(Function) According to the above configuration, when the handle is swung while the transfer pad is positioned above the printing plate on which ink has been applied in the previous step, the pad moves downward and is pressed against the printing plate. , the printing pattern engraved on the printing plate is transferred to the transfer pad. After moving the transfer pad upward, if the slider is moved forward by operating the handle in the horizontal direction,
The transfer pad is located above the printing material, and
At this time, the ink plate whose movement trajectory is regulated by the first cam mechanism applies the ink stored in the ink tray to the printing plate. Next, when the handle is swung again to move the transfer pad downward, the pad is pressed against the printing material, and the pattern engraved on the printing plate is printed on the printing material. Become. Then, after moving the transfer pad up,
When the slider is moved back to its original position using the handle, the transfer pad is positioned above the printing plate again, and at this time, the doctor blade whose movement trajectory is regulated by the second cam mechanism is moved by the ink plate. This will scrape off any excess ink that has been applied to the printing plate. In this way, the preparation for the next step is completed, and by repeating the above operations while exchanging the printing substrates, a predetermined pattern is sequentially printed on each printing substrate.

According to the above configuration, it is possible to operate the transfer pad, ink plate, and doctor blade simply by operating the handle with one hand, so it is possible to change the substrate with the other hand, and the transfer Since the pad is pressed linearly against the printing plate and printing substrate from above, it does not shift horizontally with respect to them when pressed.

(Example) Examples of the present invention will be described below.

As shown in FIGS. 1 to 3, the pad printing machine 1 according to this embodiment has an ink tray 4 containing a printing plate 3 installed on a pedestal 2a provided at the bottom of the main body 2,
In addition, a mounting base 5 for the printing material X is installed on the extension base 2b extending to one side of the main body 2, while the holder 2
An upper machine frame 2d is provided above the machine frame 2d via a vertical wall 2c, and a slider 9 that supports the transfer pad 6, ink plate 7, and doctor blade 8 is housed in the machine frame 2d.

This slider 9 has bearing parts 9a and 9b provided on both sides slidably fitted to two parallel guide shafts 10 and 10 horizontally installed in the upper machine frame 2d. This allows linear reciprocating movement in the horizontal direction (a-b direction) between a first position shown by a solid line in FIG. 1 and a second position shown by a chain line. In the first guide portion 9b extending downward from one end of the slider 9, two pad support shafts 12, 12, on which the transfer pad 6 is attached to the lower end via the attachment member 11, slide up and down. A second guide portion 9 is freely inserted and extends downward from the other end.
In c, two plate support shafts 15, 15 are attached to the lower ends of the ink plate 7 and the doctor blade 8 via attachment members 13, 14, respectively.
Blade support shafts 16 and 16 are fitted so as to be vertically slidable, and thereby the transfer pad 6, ink plate 7 and doctor blade 8 are each supported vertically movably relative to the slider 9.
Further, the transfer pad 6 is urged upward by a spring 17 and is normally held at the height shown in the figure, and the ink plate 7 and doctor blade 8 are each
They are biased downward by springs 18, 18 and 19, 19, respectively, and their vertical positions are regulated by first and second cam mechanisms 30 and 40, which will be described later (fourth and sixth cam mechanisms). (see figure).
As the slider 9 reciprocates horizontally, the transfer pad 6, ink plate 7, and doctor blade 8 also reciprocate between the first position shown by the solid line in FIG. 1 and the second position shown by the chain line. However, the transfer pad 6 is located above the printing plate 3 in the first position and above the printing medium X in the second position, and the ink plate 7 and doctor blade 8 are respectively located above the ink plate 4. It is designed to move back and forth within the body.

Furthermore, one end portions 20a, 20a of a bifurcated handle 20 are rotatably attached to both side surfaces of the slider 9. The other end of the handle 20 protrudes from the upper machine frame 2d to one side, and a handle portion 20
b, and the slider 9 is made to reciprocate in the a-b direction by its horizontal operation. Moreover, the intermediate portion 20c of the handle 20,
20c is a mounting member 11 at the lower end of the pad support shaft.
The handle 20 is positioned on rollers 22, 22 supported via brackets 21, 21 extending upwardly, and when the handle 20 is swung downward, the rollers 2
2, 22, brackets 21, 21 and mounting member 1
1 to the transfer pad 6 or its support shaft 12
is adapted to be moved downward against a spring 17. In order to prevent the transfer pad 6 from being moved downward at positions other than the first and second positions, a roller 24 is attached to the extension member 23 of the handle 20.
is attached, and a push-down regulating plate 25 is fixedly installed in the upper machine frame 2d, so that when the handle 20 is to be swung downward at a position other than the first or second position, the roller 24 By contacting the lower end surface 25a of the regulating plate 25, its swinging is prevented. Further, both end surfaces 25b and 25c of the regulating plate 25 are located at the first and second positions.
This is an arcuate guide surface that guides the roller 24 when the handle 20 is swung downward.

In addition, as shown in FIGS. 4 to 7, the upper machine frame 2d
First and second cam mechanisms 30 and 40 for regulating the movement loci of the ink plate 7 and doctor blade 8 are provided inside the side members 2d' and 2d'' on both sides, respectively.

Among these, the first cam mechanism 30 for the ink plate 7 shown in FIGS.
A first plate cam 31 fixed along the inner lower edge of d' over the entire movement range of the plate 7, and a little forward of the end of the first plate cam 31 on the first position side (in the direction a). From the position to the middle part, the first plate cam 3
1 and a second plate cam 32 which is fixed to overlap with the second plate cam 32. The upper surfaces of these plate cams 31 and 32 are cam surfaces 31a and 32a, and the first
The cam surface 31a of the plate cam 31 includes a low part 31 ₁ at the rear end (end on the first position side), a front upward slope part 31 ₂ continuing in front of the low part 31 1 , and a front end part ( and a high portion 31 ₃ reaching the end (end portion on the second position side). Further, the cam surface 32a of the second plate cam 32 is composed of a high portion 32 ₁ at the rear end and a sloped portion 32 ₂ extending forward and downward.
On the other hand, the support member 33 fixed to the support shafts 15, 15 of the ink plate 7 has the first plate cam 31
The first follower 34 rolls on the cam surface 31a of the
is directly attached, and the support member 33
A second follower 36 that rolls on the cam surface 32a of the second plate cam 32 is attached to the lower end of the arm 35, the upper end of which is pivotably attached to the arm 35. Then, the arm 35 is urged forward by the spring 37, and normally the second follower 36 is
It is in contact with the rear surface of the follower 34.

Further, the second cam mechanism 40 for the doctor blade 8 shown in FIGS. 6 and 7 is fixed to a certain range near the first position and the second position, respectively, along the inner lower edge of the machine frame side member 2d''. first and second plate cams 4
1, 42, and are fixed to these plate cams 41, 42 from a slightly forward position of the rear end of the first plate cam 41 to a slightly rearward position of the front end of the second plate cam 42. and a third plate cam 43. These plate cams 41 to 43 also have upper surfaces as cam surfaces 41a to 43a, and the cam surface 41a of the first plate cam 41 has a high part ₄₁₁ at the rear end and a downwardly downward front part continuing in front of the high part 411. It is composed of an inclined part 41 ₂ ,
Further, the cam surface 42a of the second plate cam 42 includes a high portion 42 ₁ at the front end and a downwardly sloped portion 42 ₂ continuing behind the high portion 42 1 at the front end.
Further, the cam surface 43a of the third plate cam 43 is composed of a front-upward slope portion 43 ₁ at the rear end portion and a high portion 43 ₂ continuing in front of the slope portion 43 1 . On the other hand, a first follower 45 that rolls on the cam surfaces 41a, 42a on the first and second plate cams 41, 42 is directly attached to the support member 44 fixed to the support shafts 16, 16 of the doctor blade 8. At the same time, a second follower 47 that rolls on the cam surface 43a of the third plate cam 43 is attached to the lower end of the arm 46 whose upper end is pivotably attached to the support member 44. Then, the arm 46 is urged backward by the spring 48, and normally the second
A follower 47 is in contact with the front surface of the first follower 45.

In this embodiment, the ink tray 4 is made of a molded synthetic resin sheet, and as shown in FIGS. 1 and 3, the first recess 4a for storing ink is formed on one side, and the above-mentioned mark is formed on the other side. Second recess 4b for storing plate 3
However, an inclined part 4c is provided between both the recesses 4a and 4b for guiding the ink in the first recess 4a onto the printing plate 3 in the second recess 4b. The ink tray 4 is placed on a receiving plate 52 that is fixed on the main body holder 2a with a spacer 51 interposed therebetween. Further, the printing plate 3 is also made of a synthetic resin thin plate, is installed on a metal base member 53, and is secured by screws 54 on both sides.
. . 54, which are clamped by pressing members 55, 55 which are fastened to the base member 53. By attracting the base member 53 to the magnet 56 embedded in the spacer 51, the base member 53 or the printing plate 3 is fixed, and the ink tray 4 is placed between the base member 53 and the receiving plate 52. By being sandwiched, the ink tray 4 is also fixed.

Next, the operation of this pad printing press 1 will be explained according to the printing operation procedure.

First, the slider 9 is positioned at the first position shown by the solid line in FIG. 6 is pressed onto the printing plate 3 in the ink pan 4 located below. At this time, assuming that ink has been applied to the printing plate 3 in the previous process and the excess ink has been scraped off, the ink held in the grooves of the printing plate 3 is removed by the grooves. The drawn pattern is transferred to the transfer pad 6 as it is. Then, after swinging the handle 20 upward to move the transfer pad 6 upward, the handle 20 is pulled forward to move the slider 9 in the direction a to the second position, and at this second position, If the transfer pad 6 is moved downward again by swinging the handle 20 downward, the transfer pad 6 will be pressed against the printing material X, since the printing material X is installed below it. As a result, the above pattern is printed on the printing material X. In that case, when the transfer pad 6 is moved down in the first and second positions, the roller 24 supported by the extension member 23 of the handle 20 presses the end surfaces 25b and 2 of the regulating plate 25.
5c, the pressing position of the transfer pad 6 against the printing plate 3 and the printing material X will not shift, and therefore the pattern will always be printed correctly at a predetermined position on the printing material X.

On the other hand, when the slider 9 moves in the direction a from the first position to the second position, the first cam mechanism 3
5A, the ink plate 7 applies ink onto the printing plate 3 for the next stroke. In other words, in the first position of the first cam mechanism 30, as shown by the symbol A in FIG. 5A, the first follower 34 attached directly to the ink plate support shafts 15, 15 via the support member 33 is rotated by the spring 1.
1. The ink plate 7 is positioned on the lower portion 311 of the cam surface 31a of the first plate cam 31 by the downward urging force of the ink tray ₄ and the ink tray 4. As a result, the ink plate 7 is brought into contact with the first recess 4a in which the ink is stored, as shown by the solid line in FIG.
From this state, the first follower 34 and the second follower 36 abutting against the rear surface thereof move forward in accordance with the movement of the slider 9 in the direction a. Immediately after the start of the movement, the second follower 36 abuts against the rear end of the second plate cam 32 and is pulled by the spring 3 together with the arm 35.
Therefore, the second follower 36 is pushed backward against the second plate cam 37 as shown by the symbol B.
After the first follower 34 has climbed up onto the cam surface 32a of the second plate cam 31, the first follower 34 continues to roll along the cam surface 31a of the first plate cam 31. The first follower 34 then moves from the low portion 311 of the cam surface _31a through the inclined portion ₃₁₂ and over the high portion ₃₁₃ , and reaches the second position indicated by the symbol C.
As shown by the arrow A in FIG.
moves in the ink tray 4 along the same path as the first follower 34. As a result, the ink stored in the first recess 4a of the ink tray 4 is scooped up along the inclined portion 4c and applied to the printing plate 3 stored in the second recess 4b.
In this case, in the second cam mechanism 40, as shown by the symbol D in FIG. 7A, initially, in the first position, the first follower 45 is located on the high portion ₄₁₁ of the cam surface 41a of the first plate cam 41.
Immediately after starting to move in the direction, the second follower 47, which is prevented from swinging backward by abutting against the front surface of the first follower 45 as shown by the symbol E, rides up from the inclined portion 431 of the cam surface 43a of the third plate cam ₄₃ onto the high portion _432. Therefore, although the front portion of the first plate cam 41 is the inclined portion ₄₁₂ which slopes downward, the support member 44, the blade support shafts 16, 16, and the doctor blade ₈ do not move downward (the high portion 432 of the third plate cam 43 is the first
Since the plate cam 41 is slightly higher than the high portion 41 ₁ , the doctor blade 8 is moved slightly upward.
Then, as shown by the symbol F, the second position is
At the same time that the follower 47 drops off from the front end of the third plate cam 43, the first follower 45 moves onto the boundary between the high portion ₄₂₁ and the inclined portion ₄₂₂ of the cam surface 42a of the second plate cam 42.

In this way, the slider 9 is moved by the handle 20.
When the transfer pad 6 is moved in the direction a and the work of pressing the transfer pad 6 against the printing material X at the second position is completed, the transfer pad 6 is moved upward, and then the slider 9 is moved to the b direction using the handle 20. At this time, the doctor blade 8 scrapes off the excess ink that has been applied to the printing plate 3 by the ink plate 7 and protrudes from the engraved grooves. Make a dropping motion.

In other words, when the first and second followers 45 and 47 move in the direction b from the state shown by the symbol G in FIG. The spring 48 comes into contact with the front end of the three-plate cam 43 together with the arm 46.
It will be forced to move relatively forward against the
Therefore, the second follower 47 is connected to the third plate cam 43.
Even after riding on the cam surface 43a of the second plate cam 42, the first follower 45 moves on the cam surface 42a of the second plate cam ₄₂ , and moves along the rear downward slope 422. Therefore, the doctor blade 8 is
is moved down, and the first follower 45 is moved down to the second
When the doctor blade 8 passes the plate cam 42, it comes into contact with the printing plate 3 shown in FIG.
It will slide on top. As a result, the printing plate 3
The excess ink on the top will be scraped off.
After the doctor blade 8 passes over the printing plate 3, the first
The follower 45 is the cam surface 41a of the first plate cam 41
By climbing onto the high part 41 ₁ from the inclined part 41 ₂ , the doctor blade 8 is moved upward and returned to the first position shown by the solid line in FIG. The second follower 47 contacts the front surface of the first follower 45 and returns to its original state. Incidentally, when the slider 9 moves in the direction b, in the first cam mechanism 30, the first follower 34 initially moves against the cam surface 3 of the first plate cam 31, as shown by the symbols R and N in FIG. 5B.
A second follower 36 is located on the high portion 31 ₃ in 1a and is prevented from swinging forward by the follower 34 when the first follower 34 rolls to the rear downward slope portion 31 ₂ . is the high portion 32 ₁ on the cam surface 32a of the second plate cam 32 ₂
Therefore, these followers 34, 36 or the ink plate 7 do not move downward. Then, when the second follower 36 returns to the first position, as shown by the symbol le, the second follower 36 falls off from the rear end of the second plate cam 32, and the first follower 34 falls off the lower part 31 of the first plate cam 31. ₁
Move to the top and return to the original state.

Hereinafter, while replacing the printing material X, the operation of the handle 20 in the horizontal direction and the first and second positions,
By repeating the swinging operation, printing on each print material X, applying ink onto the printing plate 3, and scraping off excess ink are performed in sequence.

(Effects of the invention) As described above, according to the pad printing machine according to the present invention, all operations in the printing machine can be performed only by operating the handle with one hand. Since it becomes possible to change the printing material at once, the workability and productivity of printing operations using this type of manual pad printing machine are significantly improved. In addition, according to this pad printing machine, since the transfer pad is pressed linearly onto the printing plate and the printing material from above, there is no horizontal displacement with respect to the printing plate and the printing material during pressing, and therefore, high printing accuracy is achieved. This results in a finish of .

[Brief explanation of the drawing]

The drawings show an embodiment of a pad printing machine according to the present invention, and FIG. 1 is a front view thereof, and FIG.
Figure - Transverse plan view cut along the line, 3rd, 4th,
6 is a vertical cross-sectional side view taken along the line, - line, and - line of FIG. 1, respectively, and FIGS. FIG. 1 is an explanatory diagram showing the operation of the second cam mechanism. 1... Pad printing machine, 2... Main body, 3... Printing plate, 4... Ink plate, 6... Transfer pad, 7...
Ink plate, 8...Doctor blade, 9...
...Slider, 20...Handle, 30...First cam mechanism, 40...Second cam mechanism.

Claims (1)

[Scope of utility model registration request] This is a pad printing machine that prints the printing pattern engraved on the printing plate onto the printing material by first pressing a transfer pad onto a printing plate coated with ink and then onto the printing material. an ink tray in which the printing plate is arranged; a slider supported on the upper part of the main body so as to be capable of horizontal linear reciprocating movement; a handle that reciprocates the slider; and a handle that is supported by the slider so as to be able to move up and down, and that is caused by the reciprocating movement of the slider by the handle, between an installation position above the printing plate and an installation position above the printing medium arranged parallel to the above-mentioned printing plate. At the same time, the transfer pad is moved up and down by the swinging operation of the handle at both of the above positions and is pressed against the printing plate and the printing medium, and the transfer pad is supported by the slider so as to be able to move up and down and is moved by the reciprocating movement of the slider by the handle. The ink plate and doctor blade reciprocate within the ink tray, and the ink plate applies the ink stored in the ink tray to the printing plate during forward movement, and along a trajectory passing above the printing plate during backward movement. It is characterized by having a first cam mechanism that moves the doctor blade, and a second cam mechanism that moves the doctor blade along a trajectory that passes above the printing plate during forward movement and slides into contact with the printing plate during backward movement. Pad printing machine.