Production equipment for positioning offset printing cold stamping film

Abstract

The utility model relates to the technical field of cold stamping film production, in particular to production equipment for positioning offset printing cold stamping films, a cold stamping film is placed on a driving roller and conveyed forwards, a pressing plate and a printing plate are controlled by a driving device to move downwards, and the pressing plate presses a rubber blanket to perform offset printing operation. Meanwhile, the other rubber blanket moves to the position below the printing plate, and then the printing plate conducts inking on the rubber blanket. When the working rubber blanket needs to be replaced or supplemented with ink, the mounting base capable of moving left and right is controlled, the ink-coated rubber blanket is rapidly moved to the position under the pressing plate to replace the working rubber blanket for continuous offset printing, the rubber blanket which just finishes working is moved to one side for ink coating, and the steps are cycled and alternated. And the production interruption time is greatly shortened, the production continuity is ensured, and the production efficiency is remarkably improved. The method can be widely applied to the technical field of cold stamping film production.

Description

Technical Field

[0001] The utility model relates to the technical field of cold foil production, in particular to production equipment for positioning offset cold foil films. Background Art

[0002] Cold foil is a specially treated film that can be used in offset printing to create exquisite patterns, metallic luster, or unique textures. It offers excellent decorative properties, weather resistance, and adhesion, making it widely used in decorative applications such as packaging, labels, and book covers. During the offset printing process, the printing plate carries the printed pattern and text. However, the relatively hard surface of the printing plate makes direct contact with the cold foil difficult to evenly transfer ink, which can lead to uneven ink distribution, resulting in unclear printed patterns, color deviation, and localized ink shortages.

[0003] The rubber blanket has a certain degree of elasticity and softness, which can better buffer pressure. It plays a key role in transferring and transferring ink between the printing plate and the cold foil, so that the ink is transferred to the cold foil more evenly and fully, thus ensuring the high quality and stability of the printing effect. However, in the existing cold foil production equipment, the printing plate repeatedly applies ink to the rubber blanket, and the offset printing process is suspended during the inking process, which ultimately leads to an inconsistency in the production process, reduced work efficiency, and increased production costs. Therefore, in order to improve the production efficiency and quality of cold foil, a more optimized production equipment is needed to improve this situation. Utility Model Content

[0004] Aiming at the problem that in the cold foil offset printing process of the prior art, the printing plate needs to be repeatedly inked onto the rubber blanket, and the offset printing work is suspended during the inking process, which ultimately leads to an inconsistency in the production process; the utility model proposes a production device for positioning offset cold foil.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A production device for positioning offset cold foil film includes a driving roller, a printing plate, a rubber blanket, and a pressing plate. Two driving rollers are provided and are respectively arranged on the front and rear sides of the pressing plate. Two printing plates are provided and are respectively arranged on the left and right sides of the pressing plate. A mounting seat that can move left and right is provided under the pressing plate. Two mounting grooves arranged left and right are provided on the mounting seat. The rubber blanket is arranged in the mounting groove. The device also includes a driving device for controlling the up and down movement of the pressing plate and the printing plate.

[0007] During offset printing, the film is placed on a drive roller and fed forward. A drive controls the downward movement of the pressure plate and printing plate, which presses the film against the blanket, allowing the offset printing process to proceed. Simultaneously, another blanket moves under the printing plate, which then inks the blanket.

[0008] When the working blanket needs to be replaced or inked, the left-right movable mounting base is controlled to quickly move the inked blanket directly under the platen to replace the working blanket and continue offset printing. The blanket that has just finished its work is moved aside for inking, and the cycle continues. By alternating the two blankets, one is printing while the other is preparing to ink, greatly reducing production interruptions, ensuring production continuity, and significantly improving production efficiency.

[0009] Preferably, a limit frame is also included, and the mounting seat can move left and right within the limit frame; when the left side wall of the mounting seat abuts against the inner wall of the limit frame, the rubber cloth on the right side moves to directly below the pressure plate; when the right side wall of the mounting seat abuts against the inner wall of the limit frame, the rubber cloth on the left side moves to directly below the pressure plate.

[0010] The limit frame can accurately limit the moving range of the mounting base, ensuring that the rubber cloth can be accurately moved to the bottom of the pressure plate every time, thereby improving the working accuracy of the equipment.

[0011] As a preference, a slide groove is provided on the front and rear inner walls of the limit frame, and an electric slider is fixed on the front and rear outer walls of the mounting seat, and the electric slider can move back and forth in the slide groove.

[0012] When the mounting base needs to move left or right to switch the position of the rubber blanket, the electric sliders on the front and rear outer walls of the mounting base will move back and forth along the predetermined direction in the slide grooves on the front and rear inner walls of the limit frame, thereby driving the mounting base to move left and right smoothly and accurately in the limit frame.

[0013] Preferably, mounting holes are provided on the left and right inner walls of the limit frame, and micro switches for controlling the movement of the drive device are provided in the mounting holes. Trigger rods are fixed on the left and right side walls of the mounting seat. When the mounting seat rests against the inner side of the limit frame, the trigger rods trigger the corresponding micro switches.

[0014] Trigger levers on the left and right side walls of the mount move with the mount. When the left or right side of the mount rests against the inner wall of the limit frame, the trigger lever enters the corresponding mounting hole and triggers the microswitch therein. Once triggered, the microswitch sends a control signal to the drive unit, causing it to perform the desired movement, such as stopping, starting, or changing its state. The drive unit responds only when the mount is moved to a specific position and the trigger lever triggers the microswitch, ensuring accurate positioning of the mount.

[0015] As a preference, the upper end surface of the limit frame is provided with indicator lights corresponding one to one with the micro switches, and the circuit where the indicator lights are located is connected in series with the circuit where the control device is located.

[0016] When the mounting base moves left or right within the limit frame and the trigger rod triggers the corresponding micro switch, the current will flow through the control device and the indicator light simultaneously because the circuit where the indicator light is located is connected in series with the circuit where the control device is located. By observing whether the indicator light is operating normally, the staff can promptly understand the operating status of the control device.

[0017] Preferably, the driving device includes a driving plate that can move up and down, the lower end surface of the driving plate is fixed with a first fixed rod and a second fixed rod, the pressure plate is fixed to the lower end surface of the first fixed rod, and the printing plate is fixed to the lower end surface of the second fixed rod.

[0018] The pressure plate and printing plate are driven up and down by a driving plate at the same time, ensuring the consistency and synchronization of their movements and improving the accuracy and stability of the offset printing process.

[0019] As a preference, it also includes a drive motor, a hydraulic push rod is fixed to the upper end surface of the drive plate, and the drive motor is used to drive the hydraulic push rod to drive the drive plate to move.

[0020] When the equipment is in operation, the drive motor activates, driving the hydraulic push rod to extend and retract. Because the hydraulic push rod is fixed to the upper end of the drive plate, its extension or contraction drives the drive plate up and down. This synergistic effect of the drive motor and hydraulic push rod allows for precise control of the drive plate's vertical displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of the production equipment for positioning offset cold foil in the embodiment;

[0022] Figure 2 Schematic diagram of the structure of the mounting base and the limiting frame in the embodiment;

[0023] Figure 3 Schematic diagram of the structure of the limit frame in the embodiment;

[0024] Figure 4 Schematic diagram of the structure of the mounting base in the embodiment.

[0025] The parts indicated by the numbers in the accompanying drawings are as follows:

[0026] 110. Drive roller; 120. Printing plate; 130. Rubber blanket; 140. Press plate; 150. Mounting seat; 1502. Electric slider; 1503. Trigger lever; 160. Limit frame; 1601. Slide; 1602. Micro switch; 1603. Indicator light; 1604. Support leg; 1701. Drive plate; 1702. First fixed rod; 1703. Second fixed rod; 1704. Hydraulic push rod; 180. Support seat. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are merely for explanation of the present invention and are not intended to limit the present invention.

[0028] Example

[0029] like Figure 1-Figure 4 As shown, this embodiment discloses a production device for positioning offset printing cold stamping film. This embodiment discloses a production device for positioning offset printing cold stamping film. The production device for positioning offset printing cold stamping film in this embodiment mainly consists of a driving roller 110, a printing plate 120, a rubber cloth 130, a pressing plate 140, a mounting seat 150, a limiting frame 160, a driving device, etc.

[0030] Two drive rollers 110 are located on the front and rear sides of the platen 140, used to transport the cold foil. Two printing plates 120 are located on the left and right sides of the platen 140. Below the platen 140, a movable mounting base 150 is located. Mounting base 150 has two mounting slots on either side for mounting the rubber blanket 130. A limit frame 160 is located around the mounting base 150. Legs are located at the bottom of the limit frame 160. Slide slots 1601 are defined on the front and rear inner walls, and mounting holes are defined on the left and right inner walls. Micro switches 1602 are located in these mounting holes. Electric sliders 1502 are fixed to the front and rear outer walls of the mounting base 150, while trigger levers 1503 are fixed to the left and right side walls.

[0031] The drive mechanism includes a vertically movable drive plate 1701. A first fixing rod 1702 and a second fixing rod 1703 are secured to the lower end of the drive plate 1701. The pressure plate 140 is secured to the lower end of the first fixing rod 1702, and the printing plate 120 is secured to the lower end of the second fixing rod 1703. A hydraulic push rod 1704 is secured to the upper end of the drive plate 1701. A drive motor drives the hydraulic push rod 1704, which is secured to a support base. The upper end of the limit frame 160 is equipped with an indicator light 1603, corresponding one-to-one with each microswitches 1602. The circuitry for the indicator light 1603 is connected in series with the circuitry for the control mechanism.

[0032] Principle of use process:

[0033] First, the cold foil is placed on the front and rear drive rollers 110. The drive rollers 110 drive the foil forward, passing it between the pressure plate 140 and the rubber blanket 130. The mounting base 150 is initially positioned at the axis of the limit frame 160, and the motorized slider 1502 simultaneously drives the mounting base 150 to move.

[0034] When the cold foil film passes beneath the platen 140, the drive roller 110 and the motorized slider 1502 pause. Simultaneously, the left or right wall of the mounting base 150 abuts against the inner wall of the limit frame 160, triggering the trigger lever 1503 to activate the corresponding microswitch 1602. This microswitch 1602 sends a control signal to the drive mechanism, causing it to respond. The drive motor then extends the hydraulic push rod 1704, driving the drive plate 1701 downward. The first and second fixed rods 1702, 1703, secured to the lower end of the drive plate 1701, descend, causing the platen 140 and printing plate 120 to also move downward. The platen 140 compresses the blanket 130, enabling it to offset the cold foil film. During the offset printing process, while the blanket 130 on one side is operating, the blanket 130 on the other side moves beneath the printing plate 120, where it is inked.

[0035] When a printing process is completed, the drive motor drives the drive plate 1701 upward, and the electric slider 1502 moves in the slide 1601, driving the mounting base 150 to move left and right. The circuit where the indicator light 1603 is located is connected in series with the circuit where the control device is located. The indicator light 1603 will light up or go out accordingly to inform the staff of the operating status of the equipment.

[0036] The offset cold foil production device in this embodiment reduces production interruptions by alternating between two rubber blankets 130, enabling continuous production and significantly improving production efficiency. The drive plate 1701 uniformly drives the platen 140 and printing plate 120, ensuring consistent and synchronized operation, a more stable offset printing process, and thus ensuring higher print quality. Furthermore, the limit frame 160 and its internal slide 1601, microswitch 1602, and other structures ensure precise positioning of the mounting base 150 and rubber blanket 130, significantly improving the operating accuracy of the device.

[0037] In short, the above is only a preferred embodiment of this embodiment, and all equivalent changes and modifications made according to the scope of the patent application of this embodiment should fall within the scope of coverage of the patent of this embodiment.

Claims

1. A production device for offset cold foil, comprising a driving roller (110), a printing plate (120), and a rubber blanket (130), characterized in that: The invention also includes a pressing plate (140), two driving rollers (110) are provided and are respectively arranged on the front and rear sides of the pressing plate (140), two printing plates (120) are provided and are respectively arranged on the left and right sides of the pressing plate (140), a mounting seat (150) movable left and right is provided below the pressing plate (140), two mounting grooves arranged left and right are provided on the mounting seat (150), and a rubber cloth (130) is arranged in the mounting grooves, and a driving device for controlling the up and down movement of the pressing plate (140) and the printing plate (120) is also included.

2. The production equipment for offset cold foil according to claim 1, characterized in that: The mounting base (150) further comprises a limit frame (160), and the mounting base (150) can move left and right in the limit frame (160); when the left side wall of the mounting base (150) abuts against the inner side wall of the limit frame (160), the rubber cloth (130) on the right side moves to directly below the pressing plate (140); when the right side wall of the mounting base (150) abuts against the inner side wall of the limit frame (160), the rubber cloth (130) on the left side moves to directly below the pressing plate (140).

3. The production equipment for offset cold foil according to claim 2, characterized in that: A slide groove (1601) is provided on the front and rear inner side walls of the limiting frame (160), and an electric slider (1502) is fixed on the front and rear outer side walls of the mounting seat (150). The electric slider (1502) can move forward and backward in the slide groove (1601).

4. The production equipment for offset cold foil according to claim 3, characterized in that: Mounting holes are provided on the left and right inner side walls of the limit frame (160), and micro switches (1602) for controlling the movement of the drive device are provided in the mounting holes. Trigger rods (1503) are fixed on the left and right side walls of the mounting seat (150). When the mounting seat (150) abuts against the inner side of the limit frame (160), the trigger rods (1503) trigger the corresponding micro switches (1602).

5. The production equipment for offset cold foil according to claim 4, characterized in that: The upper end surface of the limit frame (160) is provided with indicator lights (1603) corresponding to the micro switches (1602) one by one, and the circuit where the indicator lights (1603) are located is connected in series with the circuit where the control device is located.

6. The production equipment for offset cold foil according to claim 1, characterized in that: The driving device comprises a driving plate (1701) that can move up and down, a first fixing rod (1702) and a second fixing rod (1703) being fixed to the lower end surface of the driving plate (1701), a pressing plate (140) being fixed to the lower end surface of the first fixing rod (1702), and a printing plate (120) being fixed to the lower end surface of the second fixing rod (1703).

7. The production equipment for offset cold foil according to claim 6, characterized in that: The drive plate (1701) further comprises a driving motor. A hydraulic push rod (1704) is fixed to the upper end surface of the driving plate (1701). The driving motor is used to drive the hydraulic push rod (1704) to drive the driving plate (1701) to move.

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