Sheet-fed rotary gilding press

Abstract

The invention belongs to the field of gilding machines, and particularly relates to a single-paper rotary gilding machine which comprises a paper conveying device, a paper feeding mechanism is arranged on one side of the output end of the paper conveying device, a gilding work station is arranged on the side, away from the paper conveying device, of the paper feeding mechanism, and a main wall plate is fixedly connected to the top of the paper feeding mechanism. An electrochemical aluminum foil conveying unit is arranged on the main wall plate, a paper collecting unit is arranged on the side, away from the paper feeding mechanism, of the gold stamping work station, and a feeding station is arranged below the gold stamping work station. According to the sheet-fed rotary gilding press, the paper conveying device, the paper feeding mechanism and the gilding work station work cooperatively, it is ensured that paper is conveyed to the gilding position accurately, accurate control such as tension adjustment and accurate displacement of a leapfrogging roller is achieved through the electrochemical aluminum foil conveying unit, electrochemical aluminum foil patterns and the paper are perfectly registered, and the gilding quality is improved. And on the premise that the production requirement for high gold stamping precision is met, the production efficiency is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hot stamping machines, in particular to a single-sheet round-pressing hot stamping machine. Background Art

[0002] Hot stamping is a special printing process that does not use ink. Hot stamping refers to the process of hot stamping anodized aluminum foil onto the surface of the substrate under a certain temperature and pressure. The hot stamping machine is the equipment that completes the hot stamping process. The images and texts printed by hot stamping have a strong metallic luster and bright colors.

[0003] At present, most of the hot stamping equipment uses the flat pressing method to press the gold foil onto the paper to achieve the hot stamping effect. However, this traditional method is easy to produce bubbles when hot stamping a large area because of the difficulty in exhausting, resulting in false hot stamping. When hot stamping fine patterns, it is easy to break. In addition, due to the return movement, the speed is also limited. Because round-pressed hot stamping uses line contact and rotary operation, it has obvious advantages in large-area hot stamping, fine pattern hot stamping, production speed, and registration accuracy. More importantly, because the jump step method of flat-pressed hot stamping is to press multiple patterns at a time, if the electroplated aluminum in the pattern gap cannot be inserted and hot stamped again, it will cause waste. Therefore, in the flat-pressed hot stamping process, electroplated aluminum generally has a large waste, while round-pressed hot stamping completely eliminates the waste of materials because it adopts the single jump and single delivery method of electroplated aluminum, which is of great significance to material saving. In view of this, we propose a single-sheet round-pressed hot stamping machine. Summary of the invention

[0004] The main purpose of the present invention is to provide a single-sheet circular stamping machine, which can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the single-sheet circular stamping machine proposed in the present invention includes a paper feeding device, a paper feeding mechanism is provided on one side of the output end of the paper feeding device, a stamping workstation is provided on the side of the paper feeding mechanism away from the paper feeding device, the top of the paper feeding mechanism is fixedly connected to a main wall panel, an electrochemical aluminum foil conveying unit is provided on the main wall panel, and a paper receiving unit is provided on the side of the stamping workstation away from the paper feeding mechanism.

[0006] Preferably, a feeding station is provided below the hot stamping workstation, and a hoist is fixedly installed at the feeding station. The hoist can quickly and accurately lift the material to a designated position, thereby reducing the intensity of manual operation.

[0007] Preferably, the paper feeding device includes a paper pile platform, a paper separating mechanism, a suction nozzle assembly and a paper feeding roller, the paper pile platform is used to place a single sheet of paper, the paper separating mechanism is used to separate the papers in the paper pile one by one, the suction nozzle assembly is used to absorb the papers and transfer them to the paper feeding roller, the paper feeding roller is used to transport the papers to the paper feeding mechanism, and the paper separating mechanism separates the papers in the paper pile one by one, ensuring that only one sheet of paper enters the subsequent conveying process at a time, avoiding faults such as paper jams caused by the simultaneous conveying of multiple sheets of paper.

[0008] Preferably, the paper feeding mechanism includes a paper feeding base, a guide roller, and a paper gripper row. The paper feeding base is responsible for supporting the guide roller, the guide roller ensures the traveling direction of the paper, the paper gripper row grips the edge of the paper, and positions the paper at the hot stamping position of the hot stamping workstation under the drive of the transmission chain. The paper gripper row has multiple tooth-like structures, and these teeth can tightly bite the edge of the paper.

[0009] Preferably, the hot stamping workstation includes a heated hot stamping roller, a pressure roller, and a plate roller. The heated hot stamping roller is provided with a heating element inside. The pressure roller is used to apply pressure to make the electrochemical aluminum foil fit the paper, and the plate roller is used to transfer the electrochemical aluminum foil. The heating element generates heat when energized, and the surface temperature of the heated hot stamping roller is raised to a suitable hot stamping temperature through heat conduction.

[0010] Preferably, the foil unwinding part of the electrochemical aluminum foil conveying unit includes a foil unwinding bellows, a foil unwinding roller, a foil unwinding guide roller, a tension detection roller and a servo motor 1, the foil unwinding bellows is used to place the electrochemical aluminum foil roll, the foil unwinding roller is used to carry the electrochemical aluminum foil roll, the foil unwinding guide roller is used for guiding the foil unwinding, the tension detection roller is used to monitor the unwinding tension, the servo motor 1 is used to control the speed of the foil unwinding roller to adjust the unwinding speed, and the servo motor 1 adjusts the speed of the foil unwinding roller according to the tension signal fed back by the tension detection roller to ensure the stability of the unwinding tension of the electrochemical aluminum foil.

[0011] Preferably, the foil feeding part of the electrochemical aluminum foil conveying unit includes an air blowing roller, a foil feeding guide roller, a skip roller and a second servo motor. The air blowing roller is used to blow air to reduce the friction between the electrochemical aluminum foil and the roller surface. The foil feeding guide roller is used to guide the travel path of the electrochemical aluminum foil roll. The skip roller is used to perform skipping work. The second servo motor is used to control the rotation of the skip roller. The air blowing roller usually has an airway inside, and gas is blown toward the roller surface through an external air source or its own air pump and other devices.

[0012] Preferably, the foil collecting part of the electrochemical aluminum foil conveying unit includes a foil collecting roller, a foil collecting guide roller, a pressure wheel component, a foil collecting bellows and a plate door. The foil collecting roller is used to collect electrochemical aluminum foil waste, the foil collecting guide roller is used to guide the electrochemical aluminum foil to the foil collecting roller, the pressure wheel component is used to apply pressure to the electrochemical aluminum foil on the foil collecting guide roller to ensure that the electrochemical aluminum foil is pressed on the foil collecting guide roller, the foil collecting bellows is used to generate negative pressure to adsorb the electrochemical aluminum foil, and the plate door is used to close the foil collecting bellows. Two groups of plate doors are provided, one group is responsible for the foil collecting bellows, and the other group is responsible for the foil releasing bellows. Both the foil collecting bellows and the foil releasing bellows are provided with negative pressure motors responsible for performing negative pressure work.

[0013] Preferably, a holographic detection structure is installed on the main wall panel, and an electric cylinder is fixedly connected to the surface of the holographic detection structure. The holographic detection structure is used to detect the position of the electrochemical aluminum pattern, and the electric cylinder is used to control the movement of the holographic detection structure. The holographic detection structure adopts the optical detection principle and monitors and identifies the pattern on the electrochemical aluminum foil in real time through devices such as cameras or sensors.

[0014] Preferably, the paper collection unit consists of a paper collection table, a paper aligning mechanism and a paper collection transmission device. The paper collection table is used to collect the paper after hot stamping, the paper aligning mechanism is used to stack the paper neatly, and the paper collection transmission device is used to transport the paper from the hot stamping workstation to the paper collection table. The paper aligning mechanism usually adopts devices such as pneumatic suction cups to absorb the papers one by one and place them in a neat position.

[0015] The present invention provides a single-sheet circular stamping machine, which has the following beneficial effects:

[0016] (1) The sheet-fed hot stamping machine works in coordination with the paper feeding device, paper feed mechanism and hot stamping workstation to ensure that the paper is accurately transported to the hot stamping position. The precise control of the anodized aluminum foil conveying unit, such as tension adjustment and precise displacement of the skip roller, ensures that the anodized aluminum foil pattern and the paper are perfectly aligned. This ensures production efficiency while meeting the production requirements for high hot stamping accuracy.

[0017] (2) This single-sheet round hot stamping machine reduces manual intervention through automatic paper separation of the paper feeding device, coordinated feeding of the suction nozzle assembly and the paper feeding roller, and automatic paper collection and paper alignment of the paper receiving unit. The servo motor of the electrochemical aluminum foil conveying unit controls the unwinding and rewinding, and cooperates with tension detection and step-skipping operation to achieve efficient and stable foil transportation.

[0018] (3) The single-sheet hot stamping machine achieves high-quality hot stamping through the cooperation of heated hot stamping roller, pressure roller and plate roller. The pattern is firmly attached, clear and complete, which greatly improves the aesthetics and quality stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the blowing roller and the plate door of the present invention;

[0022] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the foil collecting guide roller and the tension detection roller of the present invention.

[0023] Explanation of the accompanying numbers: 1. Paper feeding device; 2. Paper feeding mechanism; 3. Hot stamping workstation; 4. Main wall panel; 5. Elevator; 6. Paper collection unit; 7. Servo motor 1; 8. Air blowing roller; 9. Foil feeding guide roller; 10. Electric cylinder; 11. Servo motor 2; 12. Panel door; 13. Foil collection roller; 14. Holographic detection structure; 15. Foil collection bellows; 16. Pressure wheel component; 17. Foil release guide roller; 18. Foil collection guide roller.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 - Figure 3 The present invention proposes a single-sheet round stamping machine, comprising a paper feeding device 1, a paper feeding mechanism 2 is arranged on one side of the output end of the paper feeding device 1, a stamping workstation 3 is arranged on the side of the paper feeding mechanism 2 away from the paper feeding device 1, a main wall panel 4 is fixedly connected to the top of the paper feeding mechanism 2, an electrochemical aluminum foil conveying unit is arranged on the main wall panel 4, a paper receiving unit 6 is arranged on the side of the stamping workstation 3 away from the paper feeding mechanism 2, a feeding station is arranged below the stamping workstation 3, a hoist 5 is fixedly installed at the feeding station, and the hoist 5 can quickly and accurately lift the material to the specified position, reducing the intensity of manual operation.

[0027] In an embodiment of the present invention, a paper feeding device 1 includes a paper pile platform, a paper separation mechanism, a suction nozzle assembly and a paper feeding roller. The paper pile platform is used to place single sheets of paper. It is a flat platform on which paper can be neatly stacked, waiting for the paper separation mechanism to perform a sheet-by-sheet separation operation. The paper separation mechanism is used to separate the paper in the paper pile one by one, and exert a certain force on the top paper of the paper pile through a mechanical structure or airflow, so that it is separated from the paper below, so as to prepare for the suction of the suction nozzle assembly. The suction nozzle assembly is used to absorb the paper and transfer it to the paper feeding roller. The suction nozzle assembly sucks the surface of the paper by generating negative pressure, and then moves the paper to the position of the paper feeding roller under the drive of the transmission device. When the suction nozzle assembly moves to the vicinity of the paper feeding roller, the negative pressure is reduced, and the paper is smoothly transferred to the paper feeding roller. The paper feeding roller is used to transport the paper to the paper feeding mechanism 2. The surface of the paper feeding roller usually has a certain friction force, and the paper is driven to move forward through rotation. The speed and rotation direction of the paper feeding roller are accurately controlled by the control system according to the working rhythm of the entire hot stamping machine to ensure that the paper can accurately reach the specified position of the paper feeding mechanism 2.

[0028] Furthermore, the paper feeding mechanism 2 includes a paper feeding base, a guide roller, and a paper gripper row. The paper feeding base is responsible for supporting the guide roller and providing a stable installation foundation for other components of the paper feeding mechanism 2. The guide roller ensures the direction of paper travel. The paper moves along the surface of the guide roller driven by the paper gripper row. The guide roller limits the movement trajectory of the paper by its own shape and position, so that it always moves along a predetermined direction. The installation angle and position of the guide roller are carefully designed to meet the requirements of different paper sizes and paper feeding speeds. The paper gripper row grips the edge of the paper and positions the paper at the stamping position of the stamping workstation 3 under the drive of the transmission chain. The paper gripper row has multiple tooth-shaped structures, which can tightly bite the edge of the paper. The transmission chain drives the paper gripper row to move. The paper gripper row accurately transports the paper to the stamping position of the stamping workstation 3 at the right time according to the instructions of the control system, and keeps the paper stable during the stamping process to ensure the consistency of the stamping effect.

[0029] Furthermore, the hot stamping workstation 3 includes a heated hot stamping roller, a pressure roller, and a plate roller. A heating element is arranged inside the heated hot stamping roller. When the heating element is powered on, heat is generated. The surface temperature of the heated hot stamping roller is raised to a suitable hot stamping temperature through heat conduction. When the anodized aluminum foil and paper pass between the heated hot stamping roller and the pressure roller, the high temperature of the heated hot stamping roller melts the hot melt adhesive layer on the anodized aluminum foil, so that the pattern can be firmly attached to the paper. The temperature of the heated hot stamping roller is precisely controlled by the control system and is adjusted according to the material of the anodized aluminum foil and the requirements of the hot stamping process to ensure the quality of the hot stamping. The pressure roller is used to apply pressure to make the anodized aluminum foil fit the paper. When the paper and the hot stamping roller pass through the heated hot stamping roller and the pressure roller, the hot melt adhesive layer on the anodized aluminum foil is melted, so that the pattern can be firmly attached to the paper. When the anodized aluminum foil passes between the heated hot stamping roller and the pressure roller, the pressure roller presses the anodized aluminum foil tightly against the paper so that the pattern on the anodized aluminum foil is in full contact with the paper. The pressure of the pressure roller can be adjusted according to the thickness, hardness and hot stamping effect requirements of the paper to achieve the best hot stamping effect. The plate roller is used to transfer the anodized aluminum foil. When the anodized aluminum foil passes through the plate roller, the pattern on the plate roller will accurately transfer the corresponding part of the pattern on the anodized aluminum foil to the paper. The rotation speed and position of the plate roller match the working rhythm of the heated hot stamping roller, the pressure roller and the paper feed mechanism 2 to ensure that the complete pattern can be accurately hot stamped onto the paper during the movement of the paper.

[0030] Furthermore, the foil unwinding part of the electrochemical aluminum foil conveying unit includes a foil unwinding bellows, a foil unwinding roller, a foil unwinding guide roller 17, a tension detection roller and a servo motor 7. The foil unwinding bellows is used to place the electrochemical aluminum foil roll, the foil unwinding roller is used to carry the electrochemical aluminum foil roll, the foil unwinding roller is a cylindrical shaft, the electrochemical aluminum foil roll is mounted on the foil unwinding roller, the foil unwinding guide roller 17 is used for guiding the foil unwinding, the foil unwinding roller is connected to the servo motor 7 and rotates under the control of the servo motor 7 to realize the unwinding of the electrochemical aluminum foil, the servo motor 7 adjusts the rotation speed of the foil unwinding roller according to the tension signal fed back by the tension detection roller to ensure the stability of the unwinding tension of the electrochemical aluminum foil, the tension detection roller is used to monitor the unwinding tension, the tension detection roller senses the tension of the electrochemical aluminum foil by contacting with the electrochemical aluminum foil, and when the tension changes, the tension detection roller will The signal is transmitted to the control system, and the control system calculates the foil unwinding speed that needs to be adjusted according to the preset tension value and the actually detected tension value, and adjusts the foil unwinding roller speed by controlling the servo motor 7. For example, when the tension is too large, the control system will reduce the speed of the servo motor 7 to slow down the unwinding speed of the foil unwinding roller, thereby reducing the tension; when the tension is too small, the control system will increase the speed of the servo motor 7 to increase the unwinding speed of the foil unwinding roller and increase the tension. The servo motor 7 is used to control the speed of the foil unwinding roller to adjust the unwinding speed. The servo motor 7 receives instructions from the control system and accurately adjusts the speed of the foil unwinding roller according to the tension signal fed back by the tension detection roller. It has high-precision speed control capability and can quickly respond to tension changes to ensure that the unwinding process of the electrochemical aluminum foil is stable and reliable.

[0031] Furthermore, the foil feeding part of the electrochemical aluminum foil conveying unit includes an air blowing roller 8, a foil feeding guide roller 9, a step-skipping roller and a servo motor 11. The air blowing roller 8 is used for blowing air to reduce the friction between the electrochemical aluminum foil and the roller surface. The air blowing roller 8 usually has an air passage inside, and blows gas to the roller surface through an external air source or its own air pump and other devices. The gas forms an air film between the roller surface and the electrochemical aluminum foil, which reduces the direct contact area between the electrochemical aluminum foil and the roller surface, thereby reducing the friction. The air blowing pressure and flow rate can be adjusted according to the material of the electrochemical aluminum foil and the conveying speed to achieve the best friction reduction effect. The foil feeding guide roller 9 is used to guide the travel route of the electrochemical aluminum foil roll. The foil feeding guide roller 9 drives the electrochemical aluminum foil forward by rotating. Its position and rotation direction are carefully designed to cooperate with other rollers. The two guide rollers 11 and 12 work together to keep the anodized aluminum foil in the correct posture and tension during transportation. The surface of the foil guide roller 9 is usually rough or made of special materials to increase the friction between the foil and the anodized aluminum foil to prevent the foil from slipping. The skip roller is used for skipping work. The servo motor 11 is used to control the rotation of the skip roller. The skip roller rotates and moves under the control of the servo motor 11. When skipping operation is required, the servo motor 11 drives the skip roller to perform corresponding actions according to the instructions of the control system. For example, when stamping papers of different sizes or patterns in different positions, the skip roller can adjust its own position and rotation angle to make the anodized aluminum foil achieve precise displacement during transportation, ensuring that the stamping pattern can be accurately printed at the specified position on the paper.

[0032] Furthermore, the foil collecting part of the electrochemical aluminum foil conveying unit includes a foil collecting roller 13, a foil collecting guide roller 18, a pressure wheel component 16, a foil collecting bellows 15 and a plate door 12. The foil collecting roller 13 is used to collect the electrochemical aluminum foil waste. The foil collecting roller 13 winds the electrochemical aluminum foil waste after the hot stamping on itself through rotation. The rotation speed of the foil collecting roller 13 is controlled by the control system according to the conveying speed of the electrochemical aluminum foil and the rhythm of the hot stamping work, so as to ensure that the electrochemical aluminum foil waste can be collected in time and smoothly, and avoid the accumulation or pulling of the waste to affect the stability of the entire electrochemical aluminum foil conveying process. The foil collecting guide roller 18 is used to guide the anodized aluminum foil to the foil collecting roller 13. The foil collecting guide roller 18 drives the anodized aluminum foil to move toward the foil collecting roller 13 through rotation. The foil collecting guide roller 18 cooperates closely with the foil collecting roller 13 and guides the anodized aluminum foil to the foil collecting roller 13 for winding smoothly through a certain pressure and friction. The surface of the foil collecting guide roller 18 usually has a certain roughness or is made of special materials to increase the friction between the anodized aluminum foil and the foil collecting roller to ensure the guiding effect. The pressure wheel component 16 is used to apply pressure to the anodized aluminum foil on the foil collecting guide roller 18 to ensure The anodized aluminum foil is pressed onto the foil collecting guide roller 18. The pressure wheel component 16 applies a certain pressure to the anodized aluminum foil on the foil collecting guide roller 18 through mechanical structure or air pressure. When the anodized aluminum foil passes through the foil collecting guide roller 18, the pressure wheel component 16 presses the anodized aluminum foil tightly onto the surface of the foil collecting guide roller 18, increasing the friction between the two, so that the anodized aluminum foil can follow the rotation of the foil collecting guide roller 18 and be smoothly guided to the foil collecting roller 13. The pressure of the pressure wheel component 16 can be adjusted according to the material and thickness of the anodized aluminum foil to achieve the best guiding effect. The foil collecting bellows 15 is used to generate negative pressure to absorb the electrochemical aluminum foil. Negative pressure is generated inside the foil collecting bellows 15 by means of a fan and other devices. When the electrochemical aluminum foil approaches the foil collecting bellows 15, the negative pressure will absorb the electrochemical aluminum foil toward the foil collecting roller 13. The negative pressure of the foil collecting bellows 15 can be adjusted according to the material of the electrochemical aluminum foil and the foil collecting speed to ensure that the electrochemical aluminum foil can be collected smoothly without causing excessive pulling or damage to the electrochemical aluminum foil. The plate door 12 is used to close the foil collecting bellows 15. The plate door 12 is usually installed at the opening of the foil collecting bellows 15.

[0033] Furthermore, a holographic detection structure 14 is installed on the main wall panel 4, and an electric cylinder 10 is fixedly connected to the surface of the holographic detection structure 14. The holographic detection structure 14 is used to detect the position of the electroplated aluminum pattern. The holographic detection structure 14 adopts the optical detection principle and monitors and identifies the pattern on the electroplated aluminum foil in real time through devices such as cameras or sensors. The electric cylinder 10 is used to control the movement of the holographic detection structure 14.

[0034] Furthermore, the paper collection unit 6 is composed of a paper collection table, a paper aligning mechanism and a paper collection transmission device. The paper collection table is used to collect paper after hot stamping and is the storage location for paper after the hot stamping process is completed. The paper aligning mechanism is used to stack the paper neatly. The paper aligning mechanism usually adopts devices such as pneumatic suction cups to absorb the paper one by one and place it in a neat position. The action frequency and strength of the paper aligning mechanism can be adjusted according to the conveying speed and size of the paper to ensure that the paper can be quickly and accurately stacked neatly. The paper collection transmission device is used to convey the paper from the hot stamping workstation 3 to the paper collection table. The paper collection transmission device conveys the paper from the hot stamping workstation 3 to the paper collection table. The speed and operating state of the paper collection transmission device match the working rhythm of the hot stamping workstation 3 to ensure that the paper can be smoothly transferred from the hot stamping workstation 3 to the paper collection table, and will not cause damage to the paper or affect the hot stamping effect during the conveying process.

[0035] In the present invention, when in use, the paper feeding roller of the paper feeding device 1 is started, and it smoothly feeds the paper transferred from the suction nozzle assembly to the paper feeding mechanism 2. After the paper enters the paper feeding mechanism 2, the teeth of the paper gripper row tightly bite the edge of the paper. Under the guidance of the guide roller and the drive of the transmission chain, the paper moves along the predetermined direction and is accurately positioned at the stamping position of the stamping workstation 3. The guide roller effectively limits the movement trajectory of the paper.

[0036] At the same time, the electrochemical aluminum foil conveying unit also starts to work. The foil unwinding roller is located in the foil unwinding part and is associated with the servo motor 7. It rotates under the control of the servo motor 7 to realize the unwinding operation of the electrochemical aluminum foil. The servo motor 7 accurately adjusts the rotation speed of the foil unwinding roller according to the tension signal fed back by the tension detection roller to ensure that the tension of the electrochemical aluminum foil is always in an appropriate range during the conveying process. The tension detection roller is in close contact with the electrochemical aluminum foil, senses its tension changes in real time, and transmits the signal to the control system in time. After the electrochemical aluminum foil is unwound from the foil unwinding roller, it passes through The blowing roller 8 and the foil guide roller 9, the blowing roller 8 blows air to the roller surface to form an air film between the roller surface and the anodized aluminum foil, thereby reducing the direct contact area between the anodized aluminum foil and the roller surface, reducing the friction, and preventing the anodized aluminum foil from being damaged or generating static electricity due to friction during transportation. The foil guide roller 9 guides the path of the anodized aluminum foil through rotational motion to ensure that it is smoothly transported to the hot stamping workstation 3. Its position and rotation direction are carefully designed, and it works in conjunction with other rollers to keep the anodized aluminum foil in the correct posture and tension during transportation;

[0037] During the foil feeding process, when a skipping operation is required, such as stamping different sizes of paper or patterns at different positions, the skipping roller is controlled by the servo motor 11, and rotates and moves under the precise control of the servo motor 11, driving the skipping roller to adjust its own position and rotation angle, so that the anodized aluminum foil can achieve precise displacement during the conveying process, ensuring that the stamping pattern can be accurately printed at the specified position on the paper, meeting different stamping process requirements;

[0038] When both the paper and the anodized aluminum foil arrive at the hot stamping workstation 3 accurately, the hot stamping operation officially starts. The heating element inside the hot stamping roller is energized to generate heat. The surface temperature of the hot stamping roller is raised to a suitable hot stamping temperature through heat conduction. When the anodized aluminum foil and the paper pass between the hot stamping roller and the pressure roller, the high temperature of the hot stamping roller melts the hot melt adhesive layer on the anodized aluminum foil. At this time, the pressure roller generates a certain pressure through mechanical structure or air pressure, and presses the anodized aluminum foil tightly on the paper, so that the pattern on the anodized aluminum foil is fully in contact with the paper, so that the pattern can be firmly attached to the paper.

[0039] After the hot stamping is completed, the paper is transported to the paper receiving table of the paper receiving unit 6 through the paper receiving transmission device. When the paper reaches the paper receiving table, the paper aligning mechanism starts to work to stack the paper neatly for subsequent sorting and packaging. At the same time, the electrochemical aluminum foil waste after hot stamping needs to be rolled up. The foil collection roller 13 winds the electrochemical aluminum foil waste on itself through rotation. The foil collection guide roller 18 drives the electrochemical aluminum foil to move toward the foil collection roller 13 through rotation, and smoothly pulls the electrochemical aluminum foil onto the foil collection roller 13 for winding. Cooperating with the pressure wheel component 16, a certain pressure is applied to the electrochemical aluminum foil on the foil collection guide roller 18, so that the electrochemical aluminum foil can follow the rotation of the foil collection guide roller 18 and be smoothly pulled onto the foil collection roller 13, completing the electrochemical aluminum foil recycling work.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sheet-fed circular hot stamping machine, comprising a paper feeding device (1), characterized in that: A paper feeding mechanism (2) is arranged on one side of the output end of the paper feeding device (1); a hot stamping workstation (3) is arranged on the side of the paper feeding mechanism (2) away from the paper feeding device (1); a main wall panel (4) is fixedly connected to the top of the paper feeding mechanism (2); an electrochemical aluminum foil conveying unit is arranged on the main wall panel (4); and a paper receiving unit (6) is arranged on the side of the hot stamping workstation (3) away from the paper feeding mechanism (2).

2. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: A feeding station is arranged below the hot stamping workstation (3), and a hoist (5) is fixedly installed at the feeding station.

3. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The paper feeding device (1) comprises a paper pile platform, a paper separation mechanism, a suction nozzle assembly and a paper feeding roller, wherein the paper pile platform is used to place a single sheet of paper, the paper separation mechanism is used to separate the paper in the paper pile one by one, the suction nozzle assembly is used to absorb the paper and transfer it to the paper feeding roller, and the paper feeding roller is used to transport the paper to the paper feeding mechanism (2).

4. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The paper feeding mechanism (2) comprises a paper feeding base, a guide roller, and a paper gripper row. The paper feeding base is responsible for supporting the guide roller, the guide roller ensures the direction of paper movement, and the paper gripper row grips the edge of the paper and positions the paper at the hot stamping position of the hot stamping workstation (3) under the drive of a transmission chain.

5. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The hot stamping workstation (3) comprises a heated hot stamping roller, a pressure roller and a plate roller, wherein a heating element is arranged inside the heated hot stamping roller, the pressure roller is used to apply pressure to make the electrochemical aluminum foil adhere to the paper, and the plate roller is used to transfer the electrochemical aluminum foil.

6. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The foil unwinding part of the electrochemical aluminum foil conveying unit comprises a foil unwinding bellows, a foil unwinding roller, a foil unwinding guide roller (17), a tension detection roller and a servo motor (7). The foil unwinding bellows is used to place the electrochemical aluminum foil roll, the foil unwinding roller is used to carry the electrochemical aluminum foil roll, the foil unwinding guide roller (17) is used for guiding the foil unwinding, the tension detection roller is used to monitor the unwinding tension, and the servo motor (7) is used to control the rotation speed of the foil unwinding roller to adjust the unwinding speed.

7. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The foil feeding part of the electrochemical aluminum foil conveying unit comprises an air blowing roller (8), a foil feeding guide roller (9), a skipping roller and a second servo motor (11), wherein the air blowing roller (8) is used for blowing air to reduce the friction between the electrochemical aluminum foil and the roller surface, the foil feeding guide roller (9) is used for guiding the travel path of the electrochemical aluminum foil roll, the skipping roller is used for performing a skipping operation, and the second servo motor (11) is used for controlling the rotation of the skipping roller.

8. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The foil collecting part of the electrochemical aluminum foil conveying unit comprises a foil collecting roller (13), a foil collecting guide roller (18), a pressure wheel component (16), a foil collecting bellows (15) and a plate door (12). The foil collecting roller (13) is used to collect electrochemical aluminum foil waste. The foil collecting guide roller (18) is used to guide the electrochemical aluminum foil to the foil collecting roller (13). The pressure wheel component (16) is used to apply pressure to the electrochemical aluminum foil on the foil collecting guide roller (18) to ensure that the electrochemical aluminum foil is pressed on the foil collecting guide roller 18. The foil collecting bellows (15) is used to generate negative pressure to absorb the electrochemical aluminum foil. The plate door (12) is used to close the foil collecting bellows (15).

9. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: A holographic detection structure (14) is installed on the main wall panel (4), and an electric cylinder (10) is fixedly connected to the surface of the holographic detection structure (14). The holographic detection structure (14) is used to detect the position of the electroplated aluminum pattern, and the electric cylinder (10) is used to control the movement of the holographic detection structure (14).

10. The sheet-fed circular hot stamping machine according to claim 1, characterized in that: The paper collection unit (6) is composed of a paper collection platform, a paper aligning mechanism and a paper collection transmission device. The paper collection platform is used to collect the paper after hot stamping. The paper aligning mechanism is used to stack the paper neatly. The paper collection transmission device is used to transport the paper from the hot stamping workstation (3) to the paper collection platform.

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