A metal printing cold foil laminating machine capable of achieving accurate positioning and alignment

Abstract

The present invention relates to the technical field of cold stamping equipment, and in particular to a metal printing cold stamping compound machine capable of realizing accurate positioning and alignment, and adopts the following technical scheme: comprising an unwinding mechanism, a winding mechanism, a conveying device, a pressing compound device and a positioning roller device, wherein the positioning roller device comprises an upper positioning roller and a lower positioning roller, wherein the lower positioning roller is arranged in the conveying device and is located directly below the upper positioning roller, wherein the upper positioning roller and the lower positioning roller both comprise a rotating part and a fixing part, and the fixing parts of the upper positioning roller and the lower positioning roller are both provided with a positioning detection mechanism. The beneficial effect of the present invention is that by changing the position of the positioning detection mechanism, by setting the positioning roller mechanism separately arranged on both sides of the transfer film and the substrate, both sides of the upper and lower positioning rollers are provided with a fixing part for setting the positioning detection mechanism, and by cooperating with the black and white stripes on the edges of the transfer film and the substrate, the position of the pattern on the transfer film and the substrate can be accurately positioned, and the alignment accuracy of the two can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold foil equipment, and in particular to a metal printing cold foil compound machine capable of achieving accurate positioning and alignment. Background Art

[0002] Cold stamping is a printing technology that uses a relatively low temperature to laminate an anodized aluminum film onto a substrate by pressing. During the cold stamping process, in order to improve the aesthetics of the anodized aluminum part laminated onto the substrate, a corresponding pattern is set on the anodized aluminum film. During the cold stamping process, the pattern on the anodized aluminum film needs to be accurately aligned with the pattern on the substrate so that the pattern on the anodized aluminum film can be accurately transferred and laminated onto the corresponding pattern on the substrate. The commonly used method is to set a color mark at the edge blank of the anodized aluminum film and the substrate and combine it with a photoelectric sensor for position detection. The positioning and alignment of the anodized aluminum film and the pattern on the substrate are achieved by positioning the position of the color mark. However, the positioning and alignment accuracy of the color mark is not very stable. It is easy to have a problem that the anodized aluminum film or the substrate moves slightly forward and backward after the color mark is detected, but the color mark can still be detected, resulting in the problem that the pattern on the anodized aluminum film cannot be accurately aligned with the pattern on the substrate. Summary of the invention

[0003] The object of the present invention is to provide a metal printing cold foil laminating machine which can realize accurate positioning and alignment, which can realize accurate positioning and alignment of patterns between an electrochemical aluminum film and a substrate, and can adjust the alignment accuracy as needed.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a metal printing cold foil laminating machine capable of realizing accurate positioning and alignment, comprising an unwinding mechanism, a winding mechanism, a conveying device, a pressing compound device and a positioning roller device, wherein the positioning roller device comprises an upper positioning roller and a lower positioning roller, and the transfer film used for cold foil is unwinded from the unwinding mechanism, passes through the upper positioning roller and the pressing compound device of the positioning roller device, and is then wound up by the winding mechanism, the lower positioning roller is arranged in the conveying device and is located directly below the upper positioning roller, and the conveying device is used to press the substrate The pressing and compounding device is used for pressing and compounding the transfer film and the substrate; the upper positioning roller and the lower positioning roller each include a rotating part and a fixed part, the rotating part is rotatably connected to the support seat, and the fixed part is fixedly connected to the support seat; the fixed parts of the upper positioning roller and the lower positioning roller are each provided with a positioning detection mechanism, the outer edges of the transfer film used for cold stamping and the substrate are each provided with black and white stripes corresponding to the positioning detection mechanisms on the fixed parts of the upper positioning roller and the lower positioning roller respectively; the positioning detection mechanism is connected to the controller of the cold stamping compounding machine.

[0005] Specifically, the upper positioning roller and the lower positioning roller each have two fixed parts which are evenly arranged at both ends of the rotating part, and the fixed parts at both ends of the rotating part are both provided with positioning detection mechanisms.

[0006] Specifically, the positioning detection mechanism adopts a photoelectric sensor.

[0007] Specifically, the positioning roller device is also provided with a laser sensor, and the laser sensor is connected to the controller of the cold stamping laminating machine; the transmitting part and the receiving part of the laser sensor are respectively arranged on the fixed parts of the upper positioning roller and the lower positioning roller, and the transmitting part and the receiving part are arranged opposite to each other, and the outer edges of the transfer film used for cold stamping and the substrate are provided with detection notches corresponding to the laser sensor, and the detection notches are arranged in the upward direction of the black and white stripes.

[0008] Specifically, the width of the black and white stripes is 0.5 to 2 mm.

[0009] Specifically, the unwinding mechanism and the rewinding mechanism are both connected by drive motors, and the drive motors are both servo motors.

[0010] The beneficial effects of the present invention are as follows: by changing the position of the positioning detection mechanism, by setting up positioning roller mechanisms on both sides of the transfer film and the substrate, both sides of the upper and lower positioning rollers are provided with fixed parts for setting the positioning detection mechanism, and in combination with the black and white stripes on the edges of the transfer film and the substrate, the position of the pattern on the transfer film and the substrate can be accurately positioned, thereby improving the alignment accuracy of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the overall structure of a metal printing and cold foil laminating machine capable of achieving accurate positioning and alignment in an embodiment;

[0012] Attached Figure 2 For attachment Figure 1 A partial enlarged view of the middle A part;

[0013] Attached Figure 3 Schematic diagram of the internal structure of the positioning roller device in the embodiment. DETAILED DESCRIPTION

[0014] Example 1, reference Figure 1-3A metal printing cold foil laminating machine capable of realizing accurate positioning and alignment comprises a unwinding mechanism 1, a rewinding mechanism 2, a conveying device 3, a pressing and laminating device 4, and a positioning roller device 5. The positioning roller device 5 comprises an upper positioning roller 51 and a lower positioning roller 52. After the transfer film 10 for cold foil is unwound from the unwinding mechanism 1, it passes through the upper positioning roller 51 of the positioning roller device 5 and the pressing and laminating device 4 and is then rewound by the rewinding mechanism 2. The lower positioning roller 52 is arranged in the conveying device 3 and is located directly below the upper positioning roller 51. The conveying device 3 is used for conveying the substrate 20, and the pressing and compounding device 4 is used for pressing and compounding the transfer film 10 and the substrate 20; the upper positioning roller 51 and the lower positioning roller 52 both include a rotating part 53 and a fixed part 54, the rotating part 53 is rotatably connected to the support seat 56, and the fixed part 54 is fixedly connected to the support seat 56; a positioning detection mechanism 55 is provided on the fixed part 54 of the upper positioning roller 51 and the lower positioning roller 52; the positioning detection mechanism 55 is connected to the controller of the cold stamping laminating machine.

[0015] In this embodiment, by arranging a positioning roller device 5 in the upward direction of the pressing and compounding device 4, the positions of the transfer film 10 and the substrate 20 can be positioned and detected before the transfer film 10 and the substrate 20 are pressed and compounded, ensuring that the patterns on the transfer film 10 and the substrate 20 can be accurately aligned. Specifically, the positioning roller device 5 includes an upper positioning roller 51 and a lower positioning roller 52, which are respectively arranged above the transfer film 10 and below the substrate 20, and are respectively used to position detect the positions of the transfer film 10 and the substrate 20 to ensure that the two can be accurately positioned and aligned, and the pattern on the transfer film 10 can be accurately compounded onto the corresponding pattern on the substrate 20, thereby improving the aesthetics of the finished product. Among them, the positioning detection mechanism 55 is arranged on the fixed part 54 at both ends of the upper positioning roller 51 / lower positioning roller 52. The rotating part 53 of the upper positioning roller 51 / lower positioning roller 52 can roll with the movement of the transfer film 10 / substrate 20 when the transfer film 10 / substrate 20 is conveyed forward, thereby providing tension and support. The fixed parts 54 at both ends of the rotating part 53 are fixedly connected to the support seat 56 installed and connected to the rotating part 53, and do not rotate with the rotating part. Therefore, in order to avoid friction between the transfer film 10 / substrate 20 and the fixed part 54 when moving, the outer surface of the fixed part 54 should be slightly lower than the outer surface of the rotating part 53. The positioning detection part 55 arranged on the fixed part 54 faces the transfer film 10 / substrate 20 to realize position detection of the transfer film 10 / substrate 20.

[0016] Specifically, the positioning detection mechanism 55 of this embodiment adopts a photoelectric sensor, and the outer edges of the transfer film 10 used for cold stamping and the substrate 20 are provided with black and white stripes 30 corresponding to the positioning detection mechanism 55 on the fixing part 54 of the upper positioning roller 51 and the lower positioning roller 52 respectively. The photoelectric sensor can detect the black and white stripes 30 by emitting infrared rays and being emitted and received. The photoelectric sensor can receive the reflected light signal only when it is aligned with the white stripes. By setting the black and white stripes 30 on the outer edges of the transfer film 10 and the substrate 20, when the transfer film 10 and the substrate 20 are transported forward and pass through the photoelectric sensor, they can be detected by the photoelectric sensor and the light signal is sent to the controller of the cold foil laminating machine, so as to realize the positioning of the transfer film 10 and the substrate 20. At the same time, since the black and white stripes 30 are set, when the transfer film 10 or the substrate 20 moves slightly forward and backward, it can still be detected by the photoelectric sensor. By adjusting the width of each stripe in the black and white stripes 30, the accuracy of the position detection of the transfer film 10 and the substrate 20 can be achieved. Specifically, in order to adapt to a certain positioning accuracy, the stripe width of the black and white stripes 30 is 0.5~2mm. Of course, the stripe width of the black and white stripes 30 can also be adjusted according to the accuracy requirements of the positioning detection.

[0017] In addition, in this embodiment, the upper positioning roller 51 and the lower positioning roller 52 each have two fixed parts 54, which are evenly arranged at both ends of the rotating part 53, and the fixed parts 54 at both ends of the rotating part 53 are provided with positioning detection mechanisms 55. By providing the positioning detection mechanisms 55 at both ends of the rotating part 53, correspondingly, the black and white stripes 30 on the transfer film 10 and the substrate 20 are also provided at both sides thereof, so that the deviation of the transfer film 10 and the substrate 20 in the left and right directions can be detected. When the transfer film 10 or the substrate 20 is tilted in the left and right directions, the time when the black and white stripes 30 at both ends are first detected will be inconsistent, and the degree of tilt can be judged by the time when the black and white stripes 30 are first detected, so that the deviation correction adjustment can be carried out in time.

[0018] In a further embodiment, in order to further improve the accuracy of positioning and alignment between the transfer film 10 and the substrate 20, the positioning roller device 5 is also provided with a laser sensor 6, and the laser sensor 6 is connected to the controller of the cold stamping machine; the transmitting part 61 and the receiving part 62 of the laser sensor 6 are respectively arranged on the fixing parts 54 of the upper positioning roller 51 and the lower positioning roller 52, and the transmitting part 61 and the receiving part 62 are arranged opposite to each other, and the outer edges of the transfer film 10 used for cold stamping and the substrate 20 are provided with detection notches 40 corresponding to the laser sensor 6, and the detection notches 40 are arranged in the upward direction of the black and white stripes 30. Since it is difficult for photoelectric sensors to achieve higher accuracy by emitting and receiving infrared rays, a laser sensor 6 is provided on the fixing portion 54 of the upper positioning roller 51 and the lower positioning roller 52, and detection notches 40 are correspondingly provided on the transfer film 10 and the substrate 20 for allowing the laser to pass through, and the detection notches 40 are provided in the upward direction of the black and white stripes 30 on the transfer film 10 / substrate 20, that is, the black and white stripes 30 of the transfer film / substrate are first subjected to preliminary positioning detection by the positioning detection mechanism 55, and then the detection notches 40 thereon are further subjected to positioning detection by the laser sensor 6, thereby further improving the accuracy of positioning alignment. Specifically, the transmitting part 61 / receiving part 62 of the laser sensor 6 are respectively arranged on the fixing part 54 of the upper positioning roller 51 / lower positioning roller 52, specifically, they are arranged on one side of the positioning detection component 55, and together face the transfer film 10 / substrate 20 for position detection; only when the detection notches 40 of the transfer film 10 and the substrate 20 are aligned, the laser emitted by the transmitting part 61 of the laser sensor 6 can be received by the receiving part 62, and the detection notches on the transfer film 10 and the substrate 20 are set to be equal in length. When there is a misalignment between the transfer film 10 and the substrate 20, the length of the detection notch after the two overlap is less than the complete length of the detection notch. The length of the detection notch on the transfer film 10 and the substrate 20 is L, the speed at which the transfer film 10 and the substrate 20 move forward is v, and the receiving part 62 of the laser sensor 6 receives The time of the laser of the emitting unit 61 is t, and the offset distance between the transfer film 10 and the substrate is (Lv*t) / 2, and whether the transfer film 10 is ahead of or behind the substrate 20 can be determined by the disappearance time of the last light signal detected by the photoelectric sensors of the upper positioning roller 51 and the lower positioning roller 52. When the disappearance time of the last light signal detected by the photoelectric sensor of the upper positioning roller 51 is earlier than the disappearance time of the last light signal detected by the photoelectric sensor of the lower positioning roller 52, the transfer film 10 is ahead of the substrate 20, otherwise it lags behind the substrate 20. By determining the relative displacement between the transfer film 10 and the substrate 20, the position between the transfer film 10 and the substrate 20 can be fine-tuned by controlling the transmission of the transfer film 10 and the substrate 20, thereby improving the accuracy of the alignment between the two.It should be noted that, since the transfer film 10 generally adopts an electroplated aluminum film, its base film is relatively thin and it is impossible to process an open detection gap 40. Therefore, the detection gap structure can be formed by removing the aluminum layer on the side of the transfer film with electroplated aluminum by scratching. After removing the aluminum layer, only the transparent base film of the transfer film 10 remains, which allows the laser to pass through.

[0019] Specifically, the unwinding mechanism 1 and the rewinding mechanism 2 of the present embodiment are both connected by a driving motor, and the driving motors are both servo motors. In the present embodiment, both the unwinding mechanism 1 and the rewinding mechanism 2 can rotate to achieve the forward and backward movement of the position of the transfer film 10. In the normal engineering state, the rewinding mechanism 2 is driven by the driving motor of the rewinding mechanism 2 to rotate and drag the transfer film 10 forward. When the position of the transfer film 10 is detected to be too forward, the servo motor of the unwinding mechanism 1 can be started to make the unwinding mechanism 1 rotate in the opposite direction to pull the transfer film 10 back, so as to achieve the adjustment of the position of the transfer film 10.

[0020] Of course, the above are only preferred embodiments of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes made to the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal printing and cold foil laminating machine capable of achieving accurate positioning and alignment, characterized in that: The invention comprises an unwinding mechanism, a rewinding mechanism, a conveying device, a pressing and compounding device and a positioning roller device, wherein the positioning roller device comprises an upper positioning roller and a lower positioning roller, and the transfer film used for cold stamping is unrolled from the unwinding mechanism and then passes through the upper positioning roller and the pressing and compounding device of the positioning roller device and is then rewound by the rewinding mechanism, the lower positioning roller is arranged in the conveying device and is located directly below the upper positioning roller, the conveying device is used for conveying the substrate, and the pressing and compounding device is used for pressing and compounding the transfer film used for cold stamping and the substrate; the upper positioning roller and the lower positioning roller both comprise a rotating part and a fixed part, and the rotating part is rotatably connected to a support seat , the fixed part is fixedly connected to the support seat; the fixed parts of the upper positioning roller and the lower positioning roller are both provided with positioning detection mechanisms, the outer edges of the transfer film for cold stamping and the substrate are both provided with black and white stripes, and the black and white stripes provided on the outer edges of the transfer film for cold stamping and the substrate respectively correspond to the positioning detection mechanisms on the fixed parts of the upper positioning roller and the lower positioning roller; the positioning detection mechanism is connected to the controller of the cold stamping laminating machine; the fixed parts of the upper positioning roller and the lower positioning roller are both two and are respectively arranged at the two ends of the rotating part, and the fixed parts at the two ends of the rotating part are provided with positioning detection mechanisms; the positioning detection mechanism adopts a photoelectric sensor.

2. A metal printing and cold foil laminating machine capable of achieving accurate positioning and alignment according to claim 1, characterized in that: The positioning roller device is also provided with a laser sensor, and the laser sensor is connected to the controller of the cold stamping laminating machine; the transmitting part and the receiving part of the laser sensor are respectively arranged on the fixing parts of the upper positioning roller and the lower positioning roller, and the transmitting part and the receiving part are arranged opposite to each other, and the outer edges of the transfer film used for cold stamping and the substrate are provided with detection notches corresponding to the laser sensor, and the detection notches are arranged in the upward direction of the black and white stripes.

3. The metal printing and cold foil laminating machine capable of achieving accurate positioning and alignment according to claim 1, characterized in that: The stripe width of the black and white stripes is 0.5-2 mm.

4. The metal printing and cold foil laminating machine capable of achieving accurate positioning and alignment according to claim 1, characterized in that: The unwinding mechanism and the rewinding mechanism are both connected by drive motors, and the drive motors are both servo motors.

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