JPH0654500U - Lifting motion control device for heating press - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the processing capacity without degrading the processing quality. [Structure] Two rings 16 and 17 are fitted to an output shaft 9 of a speed reducer, and a detector 1 provided on each ring 16 and 17
8 and 19 are displaced by a predetermined angle. Two proximity switches 20 and 21 are arranged at appropriate places on the rotation loci of the respective detection bodies 18 and 19, and each proximity switch 20 and 21 outputs a detection signal in response to the approach of the corresponding detection bodies 18 and 19. To do. The combination of the detection body 18 and the proximity switch 20 detects that the pressure plate has reached the position near the top dead center, and the combination of the other detection body 19 and the proximity switch 21 causes the pressure plate to reach the top dead center. Detect that. In response to the detection operation of the proximity switch 20, the high speed mode is switched to the low speed mode, and in response to the detection operation of the proximity switch 21, the low speed mode is switched to the high speed mode.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a warming press machine such as a foil stamping machine, and more particularly, the present invention relates to a lifting operation control device for controlling reciprocating lifting operation of a pressure plate with respect to a heating plate.

[0002]

[Prior art]

 A heating press of that kind is for pressing a metal foil in a heated state onto the surface of a printed sheet to apply a foil, and a heating plate having a pressing die on the lower surface and a reciprocating plate with respect to this heating plate. And a pressure plate that moves up and down. Between the heating plate and the pressure plate, a metal foil sheet is placed on the side of the heating plate and a printed sheet is fed on the side of the pressure plate by a roll, and the amount of each sheet fed out is introduced. By controlling the position of the printed sheet, the pressure plate is moved up and down with respect to the heating plate while positioning the printed sheet.

[0003]

[Problems to be solved by the device]

 For good quality foiling, it is necessary to press the metal foil sheet against the printed sheet for a sufficient amount of time. However, there is a problem in that the processing efficiency becomes poor and the processing capacity drops significantly.

The present invention has been made in view of the above problems. The heating plate is operated at a low speed during the heating / pressurizing process, and is operated at a high speed after the process, so that the processing quality is not deteriorated. It is an object of the present invention to provide a lifting operation control device for a heating press machine with improved processing capacity.

[0005]

[Means for Solving the Problems]

 This invention relates to a heating press machine for heating / pressurizing an object between the heating plate and the pressure plate by reciprocating the pressure plate with respect to the heating plate by a reciprocating lift mechanism. The first position detecting means for detecting that the pressure plate has reached the position before the top dead center, the second position detecting means for detecting that the pressure plate has reached the top dead center, and the first position. 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 detecting means, and the operation of the reciprocating lifting mechanism is changed from the low speed mode to the high speed mode in response to the detecting operation of the second position detecting means. And a control means for switching to.

[0006]

[Action]

 When the pressure plate comes to a position before the heating plate, the first position detection 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 pressing plate operates at high speed after heating and pressing, improving the processing capacity.

[0007]

【Example】

 FIG. 1 shows a schematic configuration of a heating 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 is provided with a pressing die 1a for foil attachment on the lower surface, and a heater 1b is provided on the back surface of the pressing die 1a. Therefore, when the printed sheet 5 and the metal foil sheet 6 are introduced between the heating plate 1 and the pressure plate 2 and the metal foil sheet 6 is overlaid on the surface of the printed sheet 5 to apply pressure in a heated state. The metal foil adheres to a suitable place on the surface of the printed sheet 5 depending on the shape of the pressing die 1a.

The reciprocating lifting mechanism 4 uses an AC servo motor 7 as a drive source, a worm speed reducer 8 is connected to the AC servo motor 7, and an output shaft 9 of the speed reducer 8 is connected via a crank mechanism 10. The pressure plate 2 is connected. For one rotation of the output shaft 19, the pressure plate 2 reciprocates up and down once.

The crank mechanism 10 converts the axial rotational movement of the output shaft 7 of the worm speed reducer 8 into a reciprocating linear movement in the upward and downward directions 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. Although the crank mechanism 10 is configured by the two-converter mechanism 12, it is needless to say that the crank mechanism 10 is not limited to the mechanism shown in the figure as long as it is a mechanism capable of converting rotational motion into reciprocating linear motion.

The second conversion mechanism 12 is composed of four sets of link mechanisms 13 provided at both sides and front and rear positions. Each link mechanism 13 supports the pressing 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. When the horizontal component of the first conversion mechanism 11 acts on the connecting shaft 14 of both links 13a and 13b, 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, and the fixing angles of the rings 16 and 17 with respect to the output shaft 9 are set so that the detecting bodies 18 and 19 are displaced by a predetermined angle. 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.

The first detection body 18 and the first proximity switch 20 are disposed at a first position for detecting that the pressure plate 2 has reached a position near the top dead center, that is, a position before starting the process. The second detection body 19 and the second proximity switch 21 constitute the detection means 22, and the second position for detecting that the pressure plate 2 has reached the top dead center, that is, the processing end position. The detection means 23 is configured. The position detecting means 22 and 23 may have a structure in which, for example, an absolute type rotary encoder is connected to the output shaft 9 and the position is detected from the absolute position output of the rotary encoder.

As shown in FIG. 3, the detection signals output from the proximity switches 20 and 21 are fetched by the control device 24 composed of a microcomputer. The control device 24 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 outputs 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 in response to the detection operation by the first position detecting means 22, and also detects the second position detection. In response to the detection operation by the means 23, 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, and switch signals of these switches 28 and 29 and the first and second switches. Detection signals of the proximity switches 20 and 21 are fetched by the CPU 25 via the bus 31. A motor drive circuit 30 drives the AC servo motor 7, and drives the AC servo motor 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 detection operation by the respective position detection means 22 and 23, and FIG. 5 shows the relationship between the detection operation timing and the rotation speed of the output shaft 9. Now, when the output shaft 9 rotates to a certain angular position θ1 and the pressure plate 2 reaches the position near the top dead center, the first proximity switch 20 senses the detector 18 as shown in FIG. 4 (1). Output a detection signal. As a result, the rotation speed of the AC servomotor 7, that is, the output shaft 9 is switched from the high speed mode to the low speed mode. Thereafter, the pressurizing plate 2 is raised at a low speed to perform the heating / pressurizing process with the heating plate 1. And perform foiling on the printed sheet.

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 detector 19 as shown in FIG. 4 (2). Output a detection signal. As a result, the rotational speed of the AC servomotor 7, that is, 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. To do. 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 control procedure of the CPU 25 in the control device 24 from step 1 (indicated by “ST1” in the figure) to step 7. Now, 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.

When a detection signal is input to the CPU 25 from the first proximity switch 20 in the standby state of step 3, the determination of step 3 is “YES”, and the determination of the next step 4 is “YES”. Then, 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 to rotate the AC servo motor 7 in the low speed mode.

Next, when a detection signal is input to the CPU 25 from the second proximity switch 21, step 3 becomes “YES”, step 4 becomes “NO”, step 5 becomes “YES”, and the process proceeds to step 7. 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 mode.

If the stop push button switch 29 is pressed during operation, any of the determinations in steps 3 to 5 becomes “NO” and the process shifts to another process, and the CPU 25 outputs a motor stop command to output the AC servo motor. 7 will be stopped.

[0023]

[Effect of device]

 As described above, the present invention operates the pressure plate at high speed until the pressure plate reaches the position before the top dead center, and presses the plate until it reaches the top dead center from the position before the top dead center. Since it is operated at a low speed to perform heating / pressurizing processing, there is an effect that the processing capacity can be improved without degrading the processing quality.

[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. ⁵ Identification code Office reference number FI technical display location B44C 1/14 9134-3K

Claims (1)

[Scope of utility model registration request] 1. A heating press machine for heating / pressurizing an object between the heating plate and the pressure plate by reciprocally moving the pressure plate with respect to the heating plate by a reciprocating lift mechanism. First position detecting means for detecting that the pressure plate has reached a position before top dead center; second position detecting means for detecting that the pressure plate has reached top dead center; and the first position 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 detecting means, and the operation of the reciprocating lifting mechanism is changed from the low speed mode to the high speed mode in response to the detecting operation of the second position detecting means. And a control device for switching to a heating press machine.