Axial register device of photogravure press

Abstract

The utility model relates to the field of gravure printing machines, and discloses an axial register device of a gravure printing machine, which comprises wall plates arranged on the left side and the right side of the printing machine, the left wall plate and the right wall plate are respectively provided with a printing roller mounting head, and the printing roller mounting heads on the left side and the right side are oppositely arranged; the printing roller mounting head on one side is connected with a motor for driving the printing roller mounting head to move axially, and the printing roller mounting head on the other side is connected with a power source for driving the printing roller mounting head to move transversely; the motor is connected with the printing roller mounting head through a screw rod, and the motor rotates to drive the screw rod to rotate and axially move; the motor has a high-speed operation state and a low-speed operation state, when the gravure printing machine carries out plate loading, the motor is in the high-speed operation state, and when the gravure printing machine carries out printing plate adjusting, the motor is in the low-speed operation state. Through cooperation of the stepping motor and the controller, low-speed high-precision adjustment during printing and high-speed displacement during plate replacement are achieved, the plate replacement time is greatly saved, and meanwhile low-speed adjustment can be achieved to guarantee good registration accuracy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gravure printing machine, especially to the axial version matching device of gravure printing machine. BACKGROUND

[0002] The axial version matching device of traditional gravure printing machine generally adopts synchronous motor driving trapezoidal screw rod structure, and can only realize single-speed fine adjustment function. The deviation of adjusting transverse overprint is adjusted when changing different color plates (such as changing long plate into short plate), and since the speed of the synchronous motor is not adjustable, the automatic version matching device fine adjustment needs manual continuous operation button control motor slow displacement for adjustment, which is slow in speed, low in efficiency and prone to error. Although there are application cases of step motor or servo motor in the prior art, only single-speed adjustment problem is solved, and double-speed mode switching, automatic parameterization positioning and multi-unit collaborative control functions are not integrated. In addition, manual calibration relies on scale disc observation, which is complicated to operate and lacks precision. SUMMARY

[0003] The utility model provides an axial version matching device of gravure printing machine aiming at the shortcoming in the prior art.

[0004] To solve the above technical problems, the utility model discloses the following technical scheme:

[0005] The axial version matching device of gravure printing machine, including the wallboard setting in the left and right sides of the printing machine, the left and right wallboard is installed with the plate roller mounting head respectively, and the plate roller mounting head of left and right sides is set to each other. One side of the plate roller mounting head is connected with the motor that drives its axial movement, and the other side of the plate roller mounting head is connected with the power source that drives its transverse movement. The motor is connected with the plate roller mounting head through the screw rod, one end of the screw rod is connected with the plate roller mounting head, the other end of the screw rod is connected with the output end of the motor, the wallboard side surface is installed with the nut seat, the screw rod is arranged in the nut seat and is in screw thread cooperation with the nut seat, and the motor drives the screw rod to rotate and moves axially by rotating. The motor has fast running state and slow running state, when the gravure printing machine is mounted, the motor is in fast running state, when the gravure printing machine is printing and adjusting, the motor is in slow running state. The motor is electrically connected with the controller, the controller is built-in speed control module and parameter input interface, the speed control module switches the running speed of the motor to fast running state or slow running state, and the parameter input interface is used to input the printing plate specification before mounting.

[0006] As preferred, it also includes a zero position switch, which is electrically connected with the power source or integrated in the motor, and is used to drive the motor to make the screw rod and the plate roller mounting head connected with the screw rod return to the initial position when the gravure printing machine is mounted.

[0007] As preferred, the parameter input interface is connected with a control panel, the control panel is used for inputting the parameters of the circumference and axial length of the printing plate, and the controller automatically calculates the driving stroke of the motor from the initial position to the to-be-adjusted position according to the parameters.

[0008] As preferred, a photoelectric sensor is further included, the photoelectric sensor is opposite to the printed matter, the photoelectric sensor is electrically connected with the controller, the photoelectric sensor is used for detecting whether the overprint of each color of the printed matter is aligned and transmitting a signal to the controller, and the controller controls the motor to drive the axial displacement of the plate roller mounting head to the overprint of the printed matter in the slow running state.

[0009] As preferred, the motor is any one of a stepping motor, a synchronous motor and a servo motor.

[0010] As preferred, the bottom of the motor is provided with a sliding block, and the axial guide rail is further included, the sliding block is slidingly arranged on the axial guide rail.

[0011] As preferred, the wallboard is outwardly extended and fixedly installed with a support, and the axial guide rail is fixedly installed on the support.

[0012] As preferred, the lead screw is a trapezoidal lead screw, and the pitch of the trapezoidal lead screw is not greater than 3 mm.

[0013] As preferred, the output shaft of the motor is connected with the lead screw through a shaft coupling. The lead screw can rotate with the motor.

[0014] The utility model discloses a motor and controller cooperation, realize the low speed high accuracy regulation and the high speed displacement of the change of edition when printing.

[0015] The utility model discloses a motor and controller cooperation, realize the low speed high accuracy regulation and the high speed displacement of the change of edition when printing.

[0016] Through setting zero switch, can input printing plate parameter, the controller automatic calculation stepping motor's driving stroke after, eliminate the demand of manual repeated operation, make the accuracy of each regulation better. DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the schematic diagram;

[0019] Figure 3 It is the explosion drawing of the schematic diagram;

[0020] Figure 4 It is the structure schematic diagram of the schematic diagram.

[0021] The parts referred to by the numbers in the above attached figures are as follows: 1. Wall panel; 11. Nut seat; 12. Slider; 13. Shaft guide rail; 14. Bracket; 2. Roller mounting head; 3. Motor; 31. Lead screw; 32. Coupling; 4. Power source; 5. Zero position switch. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0023] The axial alignment device of a gravure printing press, such as Figures 1-4 As shown, the printing press includes wall panels 1 on the left and right sides, with printing roller mounting heads 2 installed on each wall panel 1, facing each other. One printing roller mounting head 2 is connected to a motor 3 that drives its axial movement, while the other printing roller mounting head 2 is connected to a power source 4 that drives its lateral movement. The motor 3 and the printing roller mounting head 2 are connected by a lead screw 31, with one end of the lead screw 31 connected to the printing roller mounting head 2 and the other end connected to the output end of the motor 3. A nut seat 11 is installed on the side of the wall panel 1, through which the lead screw 31 passes. The motor 3 is threaded into and engages with the nut seat 11. The motor 3 drives the lead screw 31 to rotate and move axially. The motor 3 has a fast running state and a slow running state. When the gravure printing machine is loading the printing plate, the motor 3 is in the fast running state; when the gravure printing machine is adjusting the printing plate, the motor 3 is in the slow running state. The motor 3 is electrically connected to a controller. The controller has a built-in speed control module and a parameter input interface. The speed control module switches the running speed of the motor 3 to the fast running state or the slow running state. The parameter input interface is used to input the printing plate specifications before loading the plate. The controller is a conventional PLC main controller or other conventional choice for those skilled in the art. Its connection with the motor, sensors, and other components is a conventional technical means for those skilled in the art. How to achieve control is not the technical problem to be solved by this utility model and will not be described in detail here.

[0024] Further comprising a zero position switch 5, which is electrically connected with the power source 4 or integrated in the motor 3, and is used to drive the motor 3 to return the lead screw 31 and the plate roller mounting head 2 connected with the lead screw 31 to the initial position when the intaglio printing machine is mounted with a plate. The zero position switch 5 can be connected with the motor through electrical connection or mechanical connection, and can be a physical button, a manually operated button or a wrench, or can be integrated in the controller or the motor 3, so as to determine the return of the plate roller mounting head 2 to the initial position. The sensing mode of the zero position switch has two kinds. One is an electrical zero position, that is, a "0" position signal measured by an electrical measuring element (such as a position signal digital value measured by a measuring element such as an encoder or an electronic ruler), which is a digital value defined by a programmer relative to a mechanical zero position (the measuring element can be fixed by corresponding to the mechanical zero position (so that the actual meanings of the two are at the same point position), and the two coincide. Sometimes, the data measured by the mechanical zero position corresponding measuring element is a range (or the mechanical zero position and the electrical encoder measurement value zero position are difficult to coincide), so the electrical measurement digital value corresponding to the mechanical zero position can be regarded as the electrical zero position, and other actions are sequentially offset. The other is a mechanical zero position, that is, a machine reference 0 point marked by a scale or the like on the device, and other devices are installed and operated based on this point as the reference position. The mechanical zero point is mainly used to mark the initial position of the machine in the stopped state.

[0025] The parameter input interface is connected with a control screen, which is used to input the parameters of the circumference and the axial length of the printing plate, and the controller automatically calculates the driving stroke of the motor 3 from the initial position to the to-be-adjusted position according to the parameters.

[0026] Further comprising a photoelectric sensor, which faces the printed matter and is electrically connected with the controller, and is used to detect whether the color overprint of the printed matter is aligned and transmit a signal to the controller, so that the controller controls the motor 3 to drive the plate roller mounting head 2 to axially displace to the overprint of the printed matter in a slow running state.

[0027] The motor 3 is any one of a stepping motor, a synchronous motor and a servo motor. The main difference between the stepping motor and the synchronous motor is that:

[0028] The stepping motor realizes precise position and speed control by controlling pulses, while the speed of the synchronous motor is proportional to the frequency of the power supply. Both can adjust the speed, while the servo motor is relatively more expensive and has more precise control of speed and start-stop.

[0029] The bottom of the motor 3 is provided with a sliding block 12, and further comprises an axial guide rail 13, and the sliding block 12 is slidingly arranged on the axial guide rail 13.

[0030] The wallboard 1 outwardly extends to fixedly mount a support 14, and the axial guide rail 13 is fixedly mounted on the support 14.

[0031] The screw rod 31 is a trapezoidal screw rod, and the pitch is not greater than 3 mm.

[0032] The output shaft of the motor 3 is connected with the screw rod 31 through the shaft coupling 32.

[0033] 1. The zero position switch is used to determine the return of the plate mounting head 2 to the initial position, and the controller records the zero return state.

[0034] 2. Parameter input: the operator inputs the printing plate circumference and plate length on the control screen, the controller calculates the rotation number through the screw pitch and motor step angle, and drives the motor to run at a fast speed, so as to drive the plate mounting head 2 on the starting side to move fast and mount the plate.

[0035] 3. The controller adjusts the motor to enter a slow running state, the motor drives the screw rod to move slowly in the axial direction, and the adjustment is stopped until the photoelectric sensor senses that the color registration is completed.

[0036] 4. After step 2 or step 3, the power source (usually a pneumatic cylinder, but also a motor, an electric cylinder, etc.) of the plate mounting head 2 on the other side generates a relatively large axial force to lock the axial direction.

[0037] 5. After the plate mounting is completed, the printing work is started.

[0038] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0039] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application are also included in the scope of the present application.

Claims

1. An axial register device of a gravure printing machine, comprising wall plates (1) arranged on the left and right sides of the printing machine, the left and right wall plates (1) are respectively provided with a plate roller mounting head (2), the left and right plate roller mounting heads (2) are arranged oppositely; one side of the plate roller mounting head (2) is connected with a motor (3) for driving the axial movement thereof, the other side of the plate roller mounting head (2) is connected with a power source (4) for driving the transverse movement thereof; characterized in that: The motor (3) is connected with the plate roller mounting head (2) through a screw rod (31), one end of the screw rod (31) is connected with the plate roller mounting head (2), the other end of the screw rod (31) is connected with the output end of the motor (3), the wallboard (1) is provided with a nut seat (11) on the side surface, the screw rod (31) is arranged in the nut seat (11) and is in threaded cooperation with the nut seat (11), the motor (3) drives the screw rod (31) to rotate and axially move by rotating; the motor (3) has a fast running state and a slow running state, when the gravure printing machine is mounted, the motor (3) is in the fast running state, when the gravure printing machine is printing and adjusting, the motor (3) is in the slow running state; the motor (3) is electrically connected with a controller, the controller is provided with a speed control module and a parameter input interface, the speed control module switches the running speed of the motor (3) to the fast running state or the slow running state, and the parameter input interface is used for inputting the printing plate specification before mounting.

2. An axial register device for an intaglio printing press according to claim 1, characterized in that: The zero position switch (5) is electrically connected with the power source (4) or integrated in the motor (3), and is used for driving the motor (3) to return the screw rod (31) and the plate roller mounting head (2) connected with the screw rod (31) to the initial position when the gravure printing machine is mounted.

3. An axial register device for an intaglio printing press according to claim 2, characterized in that: The parameter input interface is connected with a control screen, the control screen is used for inputting the circumference and axial length parameters of the printing plate, and the controller automatically calculates the driving stroke of the motor (3) from the initial position to the position to be adjusted according to the parameters.

4. The axial register device for a photogravure press according to claim 1, characterized in that: The photoelectric sensor is opposite to the printed matter, the photoelectric sensor is electrically connected with the controller, the photoelectric sensor is used for detecting whether each color overprint of the printed matter is aligned and transmitting a signal to the controller, and the controller controls the motor (3) to drive the plate roller mounting head (2) to axially displace to the overprint of the printed matter in the slow running state.

5. The axial register device for a photogravure press according to claim 1, characterized in that: The motor (3) is any one of a stepping motor, a synchronous motor and a servo motor.

6. The axial register device for a photogravure press according to claim 1, characterized in that: The bottom of the motor (3) is provided with a sliding block (12), and an axial guide rail (13) is further included, and the sliding block (12) is slidingly arranged on the axial guide rail (13).

7. An axial register device for an intaglio printing press according to claim 6, characterized in that: The wallboard (1) is outwardly extended and fixedly provided with a support (14), and the axial guide rail (13) is fixedly arranged on the support (14).

8. The axial register device for a photogravure press according to claim 1, characterized in that: The screw rod (31) is a trapezoidal screw rod, and the pitch is not greater than 3 mm.

9. The axial register device for a photogravure press according to claim 1, characterized in that: The output shaft of the motor (3) is connected with the screw rod (31) through a shaft coupling (32). The output shaft of the motor (3) is connected with the screw rod (31) through a shaft coupling (32).

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