JPH0735679Y2 - Foil stamping machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foil stamping machine having a warming press, and more particularly, this invention is for controlling the reciprocating lifting movement of a pressure plate with respect to a warming plate in a warming press. The present invention relates to a lifting operation control device.

[0002]

2. Description of the Related Art A foil stamping machine presses a metal foil in a heated state onto a surface of a printed sheet to apply a foil. The warming press machine includes a heating plate having a pressing die on the lower surface, And a pressure plate that moves up and down with respect to the heating plate. Between the heating plate and the pressure plate, a metal foil sheet on the side of the heating plate, and a printed sheet on the side of the pressure plate, respectively, are fed out from a roll and introduced, and the feeding amount of each sheet is adjusted. By controlling the printed sheet, the pressure plate is reciprocally moved up and down with respect to the heating plate.

[0003]

Conventionally, a method such as adjusting the temperature of a heating plate has been used for applying foil of good quality, but this kind of temperature adjustment is performed by trial and error. Therefore, there is a problem that it takes time and requires skill. Therefore, the inventor considers that the best method is to press the metal foil sheet against the printed sheet for a sufficient time in order to carry out foil attachment with good quality. The speed was set to a low speed and the foiling process was performed. However, this method improves the quality of foiling, but since the pressure plate moves up and down at a low speed, the efficiency of the foiling process deteriorates, and a new problem arises in that the processing capacity significantly decreases.

The present invention has been made in view of the above problems. When the heating / pressurizing process is performed, the pressure plate of the warming press machine is operated at a low speed, and after the process, it is operated at a high speed so that the foil can be attached. It is an object of the present invention to provide a foil stamping machine having an improved foiling processing capability without deteriorating quality.

[0005]

SUMMARY OF THE INVENTION The present invention is a heating press machine for reciprocating a pressure plate with respect to a heating plate by a reciprocating lifting mechanism to apply foil by the pressure between the heating plate and the pressure plate. In a foil stamping machine having: a first position detecting means for detecting that the pressure plate has reached a position before the foil attaching process; and a first position detecting means for detecting that the pressure plate has reached an end position of the foil attaching process. The position detecting means of No. 2 and the operation of the reciprocating lifting mechanism is switched from the high speed mode to the low speed mode in response to the detection operation by the first position detecting means.
And a control means for switching the operation of the reciprocating lifting mechanism from the low speed mode to the high speed mode in response to the detection operation by the position detecting means.

[0006]

When the pressure plate comes to a position before the heating plate, the first position detecting means performs a detection operation, and in response thereto, the control means switches the operation of the reciprocating lifting mechanism from the high speed mode to the low speed mode. As a result, the object is heated and pressurized over a sufficient period of time. When the pressure plate reaches the top dead center, the second position detecting means performs a detection operation, and in response thereto, the control means switches the operation of the reciprocating lifting mechanism from the low speed mode to the high speed mode. As a result, the pressure plate operates at high speed after the heating / pressurizing process, and the processing capacity is improved.

[0007]

EXAMPLE FIG. 1 shows a schematic structure of a warming press machine in a foiling machine. This warming press machine is provided with a heating plate 1 and a pressure plate 2 which are vertically opposed to each other, the heating plate 1 is fixed to a machine body frame 3, and the pressure plate 2 is connected to a reciprocating lifting mechanism 4. The heating plate 1 is supported so as to be able to reciprocate up and down.

The heating plate 1 has a lower surface on which a pressing die 1 for foil attachment is formed.
a is provided, and a heater 1b is provided on the back surface of the die 1a. Therefore, the printed sheet 5 and the metal foil sheet 6 are introduced between the heating plate 1 and the pressure plate 2, and the printed sheet 5
When the metal foil sheet 6 is superposed on the surface of the sheet and pressed in a heated state, the metal foil adheres to the surface of the printed sheet 5 at a proper place according to the shape of the pressing die 1a.

The reciprocating lifting mechanism 4 uses an AC servomotor 7 as a drive source, a worm speed reducer 8 is connected to the AC servomotor 7, and the output shaft 9 of the speed reducer 8 is connected to the drive mechanism via a crank mechanism 10. The pressure plate 2 is connected. For one rotation of the output shaft 9, the pressure plate 2 reciprocates up and down once.

The crank mechanism 10 converts the axial rotational movement of the output shaft 9 of the worm speed reducer 8 into a reciprocating linear movement in the vertical direction and transmits it to the pressure plate 2. In this embodiment, a first conversion mechanism 11 for converting the shaft rotation of the output shaft 9 into a rotational motion having a predetermined radius, and a first conversion mechanism 11 for converting the rotational motion of the first conversion mechanism 11 into a vertical reciprocating linear motion. 2 conversion mechanism 12
Although the crank mechanism 10 is configured by the above, it is needless to say that the mechanism is not limited to the illustrated mechanism as long as it is a mechanism capable of converting a rotary motion into a reciprocating linear motion.

The second conversion mechanism 12 is composed of four sets of link mechanisms 13 arranged at both sides and front and rear positions.
Each link mechanism 13 supports the pressure plate 2 at the upper end of the upper first link 13a and supports the lower end of the lower second link 13b on the table 15. Both links 13a, 1
When the horizontal component force of the first conversion mechanism 11 acts on the connecting shaft 14 of 3b, each link mechanism 13 bends and extends, and the pressure plate 2 moves up and down.

As shown in FIG. 2, two rings 16 and 17 are fitted to the end portion of the output shaft 9 of the worm speed reducer 8 and fixed and fixed by a plurality of screws 24. Detecting bodies 18 and 19 made of bolts are attached to the rings 16 and 17, respectively. The rings 16 and 17 with respect to the output shaft 9 are displaced so that the detecting bodies 18 and 19 are displaced by a predetermined angle.
The fixed angle of has been adjusted.

Two proximity switches 20 and 21 are arranged at appropriate positions on the rotation loci of the respective detection bodies 18 and 19, and each proximity switch 20 and 21 is sensitive to the approach of the corresponding detection bodies 18 and 19. And outputs a detection signal.

First detector 18 and first proximity switch 2
0 means the first position detecting means 22 for detecting that the pressure plate 2 has reached the position before the top dead center, that is, the position before starting the processing, and the second detection body 19 and the second detection member 19 are provided. Two
The proximity switch 21 constitutes a second position detecting means 23 for detecting that the pressure plate 2 has reached the top dead center, that is, the processing end position. The position detecting means 2
2 and 23 may have a configuration in which, for example, an absolute type rotary encoder is connected to the output shaft 9 and position detection is performed from the absolute position output of this rotary encoder.

The detection signals output from the proximity switches 20 and 21 are fetched by a controller 24 composed of a microcomputer, as shown in FIG. This control device 2
The CPU 4 has a CPU 25 as a main body for controlling and computing, and includes a ROM 26 in which programs are stored and a RAM 27 serving as a read / write work area. The CPU 25
In response to the detection operation of the first position detecting means 22, a low speed mode switching signal for switching the operation of the reciprocating lifting mechanism 4 from the high speed mode to the low speed mode is output, and the detection of the second position detecting means 23 is performed. In response to the operation, a high speed mode switching signal for switching the operation of the reciprocating lifting mechanism 4 from the low speed mode to the high speed mode is output.

In FIG. 3, reference numerals 28 and 29 denote a start push button switch and a stop push button switch for starting and stopping the AC servomotor 7, respectively. The switch signals of these switches 28 and 29 and the first and second switches mentioned above. The detection signals of the proximity switches 20 and 21 are sent to the CPU via the bus 31.
25. A motor drive circuit 30 drives the AC servomotor 7, and drives the AC servomotor 7 in a high speed mode or a low speed mode in response to a mode switching signal from the CPU 25.

4 (1) and 4 (2) show the position detecting means 22,
23 shows the detection operation, and FIG. 5 shows the relationship between the detection operation timing and the rotation speed of the output shaft 9.
Now the output shaft 9 rotates to a certain angular position θ1 and the pressure plate 2 is rotated.
When reaches the position before the top dead center, the first proximity switch 20 senses the detection body 18 and outputs a detection signal, as shown in FIG. 4 (1). As a result, the AC servomotor 7,
That is, the rotation speed of the output shaft 9 is switched from the high speed mode to the low speed mode, and thereafter, the pressure plate 2 rises at a low speed to perform the heating / pressurizing process with the heating plate 1, and the printed sheet Foil against.

Next, when the output shaft 9 rotates to the angular position θ2 and the pressure plate 2 reaches the top dead center, the second proximity switch 21 senses the detecting body 19 as shown in FIG. 4 (2). Output a detection signal. As a result, the AC servomotor 7,
That is, the rotation speed of the output shaft 9 is switched from the low speed mode to the high speed mode, and thereafter the pressure plate 2 descends at a high speed and further rises at a high speed mode degree after reaching the bottom dead center. By repeating such an operation every one rotation, the pressure plate 2 slowly rises during the heating / pressurizing process, and the pressure plate 2 quickly moves after the process and before the next process. Descends and rises.

FIG. 6 shows a CPU in the control unit 24.
Step 1 of 25 control procedure (indicated by "ST1" in the figure)
~ As shown in step 7. When the start push button switch 28 is pressed and the determination in step 1 becomes "YES", the CPU 25 outputs a motor drive command in step 2 to start the AC servomotor 7 via the motor drive circuit 30,
It waits for the next signal input (step 3). At the time of this first start, the AC servomotor 7 is rotated in the high speed mode.

In the standby state of step 3, the CPU 2
When the detection signal is input from the first proximity switch 20 to 5, the determination in step 3 is “YES”, and the next step 4
Is YES, the process proceeds to step 6, and the CPU
25 outputs a low speed mode switching signal for switching from the high speed mode to the low speed mode to the motor drive circuit 30 and outputs the AC signal.
The servo motor 7 is rotated in the low speed mode.

Next, the CPU 25 is connected to the second proximity switch 2
When the detection signal is input from step 1, step 3 returns to "YE
S ", step 4 is" NO ", step 5 is" YES "
Then, the process proceeds to step 7, and the CPU 25 outputs a high speed mode switching signal for switching from the low speed mode to the high speed mode to the motor drive circuit 30 to rotate the AC servomotor 7 in the high speed mode.

If the stop push button switch 29 is pressed during operation, the determinations in steps 3 to 5 are all "NO" and the processing shifts to other processing, and the CPU 25 outputs a motor stop command to output the AC servo motor. 7 will be stopped.

[0023]

As described above, according to the present invention, the pressure plate is operated at a high speed until the pressure plate reaches the position before the foiling process, and the pressure plate is moved from that position to the end position of the foiling process. Since the pressure plate is operated at a low speed during the interval to perform the foiling process, there is an effect that the foiling processability can be improved without degrading the processing quality of the foiling.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a heating press machine in a foiling machine.

FIG. 2 is a perspective view showing a configuration of a position detecting means.

FIG. 3 is a circuit block diagram showing an electrical configuration of a control device.

FIG. 4 is an explanatory diagram showing a detection operation by a position detection means.

FIG. 5 is an explanatory diagram showing the relationship between the timing of position detection operation and the rotation speed of the output shaft.

FIG. 6 is a flowchart showing a control procedure of the CPU.

[Explanation of symbols]

 1 Heating Plate 2 Pressurizing Plate 4 Reciprocating Lifting Mechanism 22, 23 Position Detection Means 24 Control Device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B44C 1/14

Claims (1)

[Scope of utility model registration request] 1. A foil stamping machine having a warming press machine, wherein a pressure plate is reciprocally moved with respect to a heating plate by a reciprocating lifting mechanism to apply a foil with a pressure applied between the heating plate and the pressure plate. First position detecting means for detecting that the pressure plate has reached a position before the foiling process; second position detecting means for detecting that the pressure plate has reached an end position of the foiling process; The operation of the reciprocating lifting mechanism is switched from the high speed mode to the low speed mode in response to the detecting operation of the first position detecting means, and the operation of the reciprocating lifting mechanism is slowed in response to the detecting operation of the second position detecting means. A foil stamping machine comprising a control means for switching from a mode to a high speed mode.