JPH0219236Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus that melts solid ink with a heated printing roll that rotates in a predetermined cycle and transfers it to a transfer material such as a film.

Conventionally, devices for transferring ink onto surfaces such as highly water-repellent plastics burn the ink on the surface of a carbon tape onto the material to prevent the ink from running on the surface of the material. However, carbon tape has poor durability against high-speed operation and is easily cut, so higher efficiency cannot be expected.

This invention aims to improve the efficiency of printing work by bringing a heated printing roll into contact with the surface of a solid ink roll, melting the ink little by little with heat, and transferring it to the transfer material. In order to particularly quickly replace the solid ink roll, a roll block 12 is provided on the front of the machine body via a rotating shaft, has a printing element fixed to a part of its circumferential surface, and rotates at a predetermined cycle; An ink roll support plate rotatably supported via a support shaft is provided on the same front side of the machine body, and the ink roll support plate connects the rotation shaft and the support shaft when the plate is rotated. Two shelves that are substantially parallel to the line are formed in a predetermined angular relationship, and a bed is fixed on each of the shelves, and a guide is attached to each of the beds along the direction of the line connecting the two axes. A bearing bracket is slidably engaged with each of these guides, and both beds are arranged so that these bearing brackets come into contact with a stopper provided at the end of each bed corresponding to the distal side of the ink roll support plate. A tension spring is provided between the opposite side and the bearing bracket, and solid ink rolls are supported on both bearing brackets through removable pins, and each of the solid ink rolls is placed on a line connecting the two shafts. 2 engages with a detent mechanism provided on the fuselage so as to be positioned at
holes are formed in the ink roll support plate, and the solid ink rolls are positioned so that the rotation orbit of the printing element and the circumferential surfaces of the two solid ink rolls are alternately in contact with each other.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows the entire apparatus in which a heated printing roll 2 and an ink roll support plate 3 are arranged in front of a vertical wall-shaped body 1.

The heated printing roll 2 includes a roll block 12 that is engaged with a rotating shaft 10 supported on the machine body 1 via a key 11, and a support block 13 on a surface that has been made flat by scraping a part of the circumferential surface of the roll block. It consists of a printing element 14 fixed through the roller block 12, and a pipe heater 15 embedded within the roll block 12. The rotating shaft 10 is connected to an electric motor via an electromagnetic brake inside the body 1, and is configured to rotate intermittently one rotation at a time in a predetermined cycle.

On the other hand, the ink roll support plate 3 is rotatably supported on the machine body 1 via a support shaft 17, and two shelves 18, 1 formed on the ink roll support plate 3
8 and a bed 19 and a bearing bracket 20, respectively.
two solid ink rolls 21a, 21b via
is supported. Note that the structures for supporting the solid ink rolls 21a, 21b on both shelves 18, 18, respectively, are the same, so the structure of only one will be explained below, and the other will be omitted. As shown in FIG.
are formed so as to protrude from the vertical surface 3a on the front side of the ink roll support plate 3, respectively, and the beds 1 provided on the upper surface of each of the shelves
9 is fixed with a plurality of screws 22 passing through the shelf from below. As shown in FIG.
The upper surface of the lower shelf 18 is parallel to the line X connecting the center of the support shaft 17 and the center of the support shaft 17, and The upper surfaces of the shelf portions 18 are formed in a perpendicular relationship. In addition, as shown in FIG.
The cross section of the hole 23 into which the screw 22 is inserted is formed into an oval shape in the longitudinal direction of the shelf, so that the bed 19 can be fixed at any arbitrary position on the upper part of the shelf within the range of this elongated hole. As shown in Figure 3, the bed 19
The bearing bracket 20 and the bearing bracket 20 are slidably engaged with each other via a guide 30 formed in the ridge groove 24 and a rail 25 that fits therein, and as shown in FIG. While forming a stopper 25 at the end on the centrifugal direction side,
The rising part of the end of the bed 19 and the bearing block 20
A tension spring 26 interposed between the bearing block 20 and the stopper 25 is used to position the bearing block 20 in contact with the stopper 25.

The solid ink roll 21a rotatably supported on the bearing bracket 20 via a pin 31 is made of urethane, and the urethane roll is impregnated with ink and solidified. The pin 31 has a large-diameter head 31a formed at one end, and a bearing bracket 2 is inserted into the annular groove 32 formed at the tip of the pin 31 as shown in FIG.
The spring 34 holds the pivot lever 33 pivoted at 0.
The pin is engaged with a tensile force to prevent the pin from falling off naturally.

As shown in Figure 1, there are two
holes 35 and 36 are formed. One of the holes 35 is for positioning the ink roll support plate 3 using a detent mechanism when the solid ink roll 21a on one side is located on the line X connecting the two shafts 10 and 17, and the other The two holes 36 are for positioning the ink roll support plate 3 when the solid ink roll 21b on the other side is positioned on the same line X as described above. The detent mechanism 38 shown in FIG. 5 supports a lock pin 39 with a round tip laterally between two walls of the machine body 1, and uses a buffer spring 40 provided around the pin to connect the tip of the pin to an ink roll support plate. A stop ring 41 that overhangs in the direction of 3 and wraps this overhang around the pin.
is limited to a predetermined amount.

Note that an auxiliary heater 42 is provided in the machine body below the solid ink roll 21a in FIG.
Here, A is the material to be transferred.

The illustrated embodiment is configured as described above,
The action will be explained below.

In FIG. 1, the solid ink roll 21a is pushed by the spring 26 and moves in the direction of the heated printing roll 2, but the stopper 25 controls the movement of the bearing bracket 20 and moves along the arrow trajectory B.
The position of the fixed ink roll 21a is set so that the peripheral surface of the fixed ink roll 21a is in contact with the orbit of the printing element 14 shown by . On the other hand, the surface of the printing element 14 of the pipe heater 15 in the roll block 12 is approximately 90°C.
Since the entire roll block is heated to a certain degree, when the tip of the printing element 14 rotated by the power of the rotating shaft 10 comes into contact with a part of the circumferential surface of the solid ink roll 21a, the roll is impregnated. The ink is melted and transferred to the transfer material A below.
The solid ink roll 21a projects slightly overlappingly with respect to the rotational path B of the printing element 14, so that each time the solid ink roll 21a comes into contact with the printing element 14, the solid ink roll 21a is integrally spring-loaded with the bearing bracket 20. 26 and retreat along the guide 30. Moreover, since the solid ink roll 21a rotates by a small angle due to inertia each time it comes into contact with the printing element 14, the printing element 14 evenly contacts the entire circumferential surface of the solid ink roll 21 and receives ink supply.

After determining that the amount of ink impregnated into the solid ink roll 21a has decreased, the handle 43 is
and forcefully rotate the ink roll support plate 3 in the counterclockwise direction in FIG. Since the lock pin of the detent mechanism is automatically removed from the lower hole 35, the ink roll support plate 3 rotates around the support shaft 17, and the upper solid ink roll 21b moves along the line X connecting the two shafts 10 and 17. When you reach the top, the other hole 3
The lock pin engages with the ink roll support plate 3.
is automatically positioned. In this case as well, the solid ink roll 21b is held at a position in contact with the rotation orbit B of the printing element 14 to supply ink. On the other hand, after the ink has been consumed, the roll is released from the roll support pin 31 by pivoting the lever 33 around the pin 44 and rotating it against the tension of the spring 34, as shown in FIG. 31 can be easily removed and a new solid ink roll can be easily replaced.

Note that when the auxiliary heater 42 is heated, the solid ink roll 2 above it is heated by heat radiation from the heater.
The surface of 1a is heated. This helps to improve the transfer of ink when it is difficult to transfer the ink instantaneously to the printing element 14, such as in a cold region.

As mentioned above, the print transfer device of the present invention has a support shaft 17.
Two shelves 78, 18 are formed at a prescribed angle on the ink roll support plate 3, which is rotatably supported via
The bearing brackets 20, 20 are displaceably engaged with each other through a guide, and the bearing brackets 20, 20 are disposed on the opposite side so as to press against the stoppers 25, 25 provided at the ends of the respective beds. While springs 26 and 26 are provided, solid ink rolls 21a and 21b are supported by the respective bearing brackets via removable pins 31 and 31, and furthermore, each of the solid ink rolls 21a and 21b is connected to the support shaft 17 and the printing element. Two holes 35 and 36 are formed in the ink roll support plate 3 to engage with the detent mechanism 38 so as to be positioned on the line X connecting the rotation axis 10 of the roll block 12 provided with the ink roll support plate 3 Since the spring 26 has a buffering function when the printing element 14 collides with the solid ink roll 21a, the roll block 12 can be rotated at high speed to improve efficiency. Furthermore, when the amount of ink on one solid ink roll 2a decreases, the ink roll support plate 3 can be rotated to quickly replenish the other solid ink roll 2b to a position facing the printing element 14. Since the solid ink roll can be replaced with a new one, the ink replenishment can be changed quickly and efficiency can be improved.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a partially enlarged view of the previous figure, and Fig. 3 is a - of Fig. 1.
FIG. 4 is a partial rear view, and FIG. 5 is a cross-sectional view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Body, 2... Heated printing roll, 3... Ink roll support plate, 10... Rotating shaft, 14... Printing element, 15... Pipe heater, 17... Support shaft,
18... Shelf section, 19... Bed, 20... Bearing bracket, 21a, 21b... Solid ink roll, 25... Stopper, 26... Tension spring, 3
0... Guide, 31... Pin, 38... Detent mechanism, 39... Lock pin, 42... Auxiliary heater, A... Transferred material.

Claims (1)

[Scope of utility model registration request] A roll block 12 is provided on the front side of the machine body 1 via a rotating shaft 10 and rotates in a predetermined cycle with a printing element 14 fixed to a part of its peripheral surface, and a roll block 12 is provided on the same front side of the machine body 1 via a support shaft 17. The ink roll support plate 3 is rotatably supported by the ink roll support plate 3, and when the ink roll support plate 3 is rotated, it becomes substantially parallel to the line X connecting the rotation shaft 10 and the support shaft 17. Two shelves 18, 18 are formed in a predetermined angular relationship, and beds 19, 19 are fixed on top of the shelves, respectively, and these beds are attached in the direction of the line X connecting the two axes. The bearing brackets 20, 20 are slidably engaged with these guides, and the bearing brackets are provided with stoppers provided at the ends of the respective beds facing the distal side of the ink roll support plate. Tension springs 26, 2 are placed between the opposite sides of both beds and the bearing bracket so as to abut against 25, 25.
6, and further includes the two bearing brackets 20, 2.
0 through removable pins 31, 31, while each of the solid ink rolls 21a, 21b
are the lines X connecting the two axes 10 and 17, respectively.
Two holes 35 and 36 are formed in the crawl support plate 3 to engage with the detent mechanism 18 provided in the body 1 so as to be positioned above the printing element 14.
rotation orbit B and two solid ink rolls 21a,
A printing transfer device in which a solid ink roll is positioned so that the solid ink rolls are alternately in contact with the circumferential surfaces of 21b.