Rear gold stamping equipment and method for corrugated board printing machine

Abstract

The corrugated board printing machine rear gold stamping equipment comprises a conveying frame, a conveying belt is installed in the upper end of the conveying frame, two sets of side plates are symmetrically installed on the two sides of the upper end of the conveying frame, through grooves are formed in the side plates, studs are installed in one set of through grooves, and the studs are connected with the conveying frame through bolts. A guide rod is installed in the other set of through grooves, and one end of the stud is connected with a servo motor. The hot stamping device has the beneficial effects that through the mode of combining overall pressing and local rolling, in the hot stamping process, after a pressing block integrally presses hot stamping foil and a corrugated board, a rolling shaft can be pushed through an electric push rod to press a flexible heating plate, the applied pressure is transmitted to the hot stamping foil, then a stepping motor drives a lead screw to rotate, and the hot stamping foil and the corrugated board are pressed through the rolling shaft. And the moving block drives the rolling shaft to move back and forth along the surface of the hot stamping foil under the action of the threads and the guide column, so that rolling on the surface of the hot stamping foil is realized, uniform pressure applying force is ensured, and the hot stamping effect of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of corrugated cardboard hot stamping equipment, and in particular to a post-hot stamping equipment and method for corrugated cardboard printing machines. Background Technology

[0002] Hot stamping is a printing decoration process. A metal printing plate is heated, foil is applied, and gold text or patterns are pressed onto the printed material. With the rapid development of hot stamping foil and the packaging industry, the application of electroplated aluminum hot stamping is becoming increasingly widespread, and hot stamping equipment is required in the corrugated cardboard printing process.

[0003] Existing post-foil hot stamping equipment for corrugated cardboard printing machines works by conveying the corrugated cardboard to the hot stamping position, then applying pressure to the hot stamping foil under the action of a driving mechanism, causing it to adhere to the surface of the corrugated cardboard while simultaneously heating it to achieve hot stamping. However, this method suffers from uneven pressure due to the large size of the heating plate, resulting in a large pressure area and consequently, blurry printed patterns, affecting the hot stamping effect and reducing overall performance. Furthermore, existing post-foil hot stamping equipment uses a conveyor belt to transport the corrugated cardboard, which is prone to shifting during transport and cannot be properly aligned, leading to misalignment of the hot stamping position and distorted patterns, further impacting the equipment's performance and resulting in poor results. Therefore, there is an urgent need for a new post-foil hot stamping system for corrugated cardboard printing machines to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a post-hot foil stamping device and method for corrugated cardboard printing machines in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A post-hot stamping device for corrugated cardboard printing includes a conveyor frame. A conveyor belt is installed inside the upper end of the conveyor frame. Two sets of side plates are symmetrically installed on both sides of the upper end of the conveyor frame. Through slots are opened on the side plates. A stud is installed in one set of through slots, and a guide rod is installed in the other set of through slots. A servo motor is connected to one end of the stud. A lifting plate is sleeved on both the stud and the guide rod. A pressure block is fixed to the bottom end of the lifting plate. A flexible heating plate is fixed to the bottom wall of the pressure block. A stepper motor is installed on one side wall of the pressure block. A lead screw is fixed to the output shaft of the stepper motor. A guide post is provided above the lead screw. A moving block is sleeved on both the guide post and the lead screw. An electric push rod is fixed to the bottom end of the moving block. A lifting seat is installed on the movable part of the electric push rod. A roller is installed inside the lifting seat.

[0006] Furthermore, the output shaft of the servo motor is fixedly connected to one end of the stud, the lifting plate is threadedly connected to the stud, and the guide rod passes through the lifting plate.

[0007] By adopting the above technical solution: the servo motor drives the stud to grab, which allows the lifting plate to move under the action of the thread and the guide rod.

[0008] Furthermore, the pressure block is fixed to the bottom end of the lifting plate by bolts, and the flexible heating plate is made of silicone rubber.

[0009] By adopting the above technical solution: the pressure block moves under the action of the lifting plate and applies pressure to the hot stamping paper so that it is on the surface of the corrugated paper, and then the flexible heating plate heats the hot stamping paper to print the pattern on the hot stamping paper onto the surface of the corrugated cardboard.

[0010] Furthermore, the output shaft of the stepper motor is fixedly connected to one end of the lead screw, the guide post is fixed inside the pressure block, the moving block is connected to the lead screw by a thread, the guide post passes through the moving block, and a heat dissipation mesh is installed on one side wall of the pressure block.

[0011] By adopting the above technical solution: the stepper motor drives the lead screw to rotate, so that the moving block drives the roller to move back and forth along the surface of the hot stamping foil under the action of the thread and the guide post, thereby achieving rolling of the hot stamping foil surface, ensuring uniform pressure, and improving the hot stamping effect of the device.

[0012] Furthermore, the electric push rod is fixed to the bottom end of the moving block by screws, the lifting seat is fixed to the movable part of the electric push rod by screws, and the roller is rotatably installed inside the lifting seat.

[0013] By adopting the above technical solution: during the hot stamping process, the electric push rod pushes the roller to apply pressure to the flexible heating plate and transmits the pressure to the hot stamping paper to achieve localized pressure.

[0014] Furthermore, the side plate is provided with through cavities, one set of which is equipped with an unwinding shaft and the other set of which is equipped with a winding shaft.

[0015] By adopting the above technical solution: the unwinding shaft can release the hot foil, and the rewinding shaft can rewind the hot foil.

[0016] Furthermore, hot stamping foil is wrapped around both the unwinding shaft and the winding shaft, and a winding motor is connected to one end of the winding shaft.

[0017] By adopting the above technical solution: after hot stamping is completed, the winding motor winds up the hot stamping paper through the winding shaft, while the unwinding shaft releases the hot stamping paper, and the new pattern is urgently needed to be hot stamped on the corrugated cardboard.

[0018] Furthermore, a support is fixed on one side wall of the side plate, and a bidirectional screw is rotatably arranged between the supports. A limit post is provided on one side of the bidirectional screw, and a knob is reserved at one end of the bidirectional screw.

[0019] By adopting the above technical solution: the knob can drive the bidirectional screw to rotate, thereby causing the screw block to drive the guide plate to move under the action of the thread and the limiting post, and the spacing between the guide plates can be adjusted according to the width of the corrugated cardboard.

[0020] Furthermore, two sets of screw blocks are symmetrically sleeved on the bidirectional screw and the limiting post, and a guide plate is fixed at the bottom of the screw block. The two sets of guide plates are in a figure-eight shape.

[0021] By adopting the above technical solution, during the conveying process, the guide plate can guide and straighten the corrugated cardboard, avoiding the skewing of the hot stamping pattern due to the skewing of the corrugated cardboard during the hot stamping process, thus ensuring the hot stamping performance of the device.

[0022] The beneficial effects of this invention are as follows: 1. To address the problem that existing corrugated cardboard printing machines with post-hot stamping equipment work by feeding the corrugated cardboard to the hot stamping position, then applying pressure to the hot stamping paper under the action of a driving mechanism, causing it to adhere to the surface of the corrugated cardboard while simultaneously heating it, this invention combines overall pressure with localized rolling. During the hot stamping process, after the pressure block applies pressure to both the hot stamping paper and the corrugated cardboard, an electric push rod drives a roller to apply pressure to the flexible heating plate, transmitting the pressure to the hot stamping paper. Then, a stepper motor drives a lead screw to rotate, causing a moving block to move the roller back and forth along the surface of the hot stamping paper under the action of the screw and guide post, achieving rolling of the hot stamping paper surface, ensuring uniform pressure, and improving the hot stamping effect of the device. 2. To address the problem that existing corrugated cardboard printing machines with post-hot stamping systems rely on conveyor belts for transporting corrugated cardboard, which is prone to shifting during transport and cannot be properly straightened, leading to misalignment of the hot stamping position and distorted hot stamping patterns, thus affecting the hot stamping performance and resulting in poor performance, this invention employs a guiding and straightening mechanism composed of a bidirectional screw, limiting posts, screw blocks, and guide plates. During the transport of the corrugated cardboard, a knob drives the bidirectional screw to rotate, causing the screw blocks to move the guide plates under the action of the threads and limiting posts. The spacing between the guide plates is adjusted according to the width of the corrugated cardboard, guiding and straightening it to prevent the hot stamping pattern from becoming distorted due to the corrugated cardboard's misalignment during the hot stamping process, thus ensuring the hot stamping performance of the device. Attached Figure Description

[0023] Figure 1 This is a front view of a post-hot stamping device for a corrugated cardboard printing machine according to the present invention; Figure 2 This is a rear view of a post-hot stamping device for a corrugated cardboard printing machine according to the present invention; Figure 3 This is a bottom view of the pressure block in the post-hot stamping equipment of a corrugated cardboard printing machine according to the present invention; Figure 4 This is a front cross-sectional view of the pressure block in the post-hot stamping equipment of a corrugated cardboard printing machine according to the present invention.

[0024] The annotations in the attached figures are explained as follows: 1. Conveyor frame; 2. Conveyor belt; 3. Side plate; 4. Support; 5. Bidirectional screw; 6. Guide plate; 7. Limiting post; 8. Screw block; 9. Through cavity; 10. Take-up shaft; 11. Take-up motor; 12. Through slot; 13. Guide rod; 14. Screw; 15. Servo motor; 16. Lifting plate; 17. Pressure block; 18. Hot stamping foil; 19. Unwinding shaft; 20. Flexible heating plate; 21. Stepper motor; 22. Guide post; 23. Lead screw; 24. Moving block; 25. Electric push rod; 26. Lifting seat; 27. Roller. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-4As shown, a post-hot stamping device for a corrugated cardboard printing machine includes a conveyor frame 1. A conveyor belt 2 is installed inside the upper end of the conveyor frame 1. Two sets of side plates 3 are symmetrically installed on both sides of the upper end of the conveyor frame 1. Through grooves 12 are opened on the side plates 3. A stud 14 is installed in one set of through grooves 12, and a guide rod 13 is installed in the other set of through grooves 12 to limit and guide the movement of the lifting plate 16. A servo motor 15 is connected to one end of the stud 14, which can drive the stud 14 to rotate. The lifting plate 16 is sleeved on both the stud 14 and the guide rod 13. A pressure block 17 is fixed at the bottom end of the lifting plate 16 to apply pressure to the hot stamping paper 18. A flexible heating plate 20 is fixed on the bottom wall of the pressure block 17 to heat the hot stamping foil 18. A stepper motor 21 is installed on one side wall of the pressure block 17. A lead screw 23 is fixed on the output shaft of the stepper motor 21. A guide post 22 is set above the lead screw 23. Moving blocks 24 are sleeved on both the guide post 22 and the lead screw 23, which can drive the roller 27 to move. An electric push rod 25 is fixed at the bottom of the moving block 24. A lifting seat 26 is installed on the movable part of the electric push rod 25. The roller 27 is installed in the lifting seat 26, which can roll on the surface of the hot stamping foil 18 to ensure uniform pressure and clean printing patterns.

[0026] In this embodiment, the output shaft of the servo motor 15 is fixedly connected to one end of the stud 14, the lifting plate 16 is connected to the stud 14 by a thread, and the guide rod 13 passes through the lifting plate 16. The servo motor 15 drives the stud 14 to grab you, so that the lifting plate 16 can move under the action of the thread and the guide rod 13.

[0027] In this embodiment, the pressure block 17 is fixed to the bottom of the lifting plate 16 by bolts. The flexible heating plate 20 is made of silicone rubber. The pressure block 17 moves under the action of the lifting plate 16 and applies pressure to the hot stamping foil 18 so that it is on the surface of the corrugated paper. Then the flexible heating plate 20 heats the hot stamping foil 18 and prints the pattern on the hot stamping foil 18 onto the surface of the corrugated paperboard.

[0028] In this embodiment, the output shaft of the stepper motor 21 is fixedly connected to one end of the lead screw 23, the guide post 22 is fixed inside the pressure block 17, the moving block 24 is connected to the lead screw 23 by a thread, the guide post 22 passes through the moving block 24, a heat dissipation mesh is installed on one side wall of the pressure block 17, the stepper motor 21 drives the lead screw 23 to rotate, so that the moving block 24 drives the roller 27 to move back and forth along the surface of the hot stamping foil 18 under the action of the thread and the guide post 22, so as to achieve rolling on the surface of the hot stamping foil 18, ensuring uniform pressure and improving the hot stamping effect of the device.

[0029] In this embodiment, the electric push rod 25 is fixed to the bottom of the moving block 24 by screws, the lifting seat 26 is fixed to the movable part of the electric push rod 25 by screws, and the roller 27 is rotatably installed in the lifting seat 26. During the hot stamping process, the electric push rod 25 pushes the roller 27 to apply pressure to the flexible heating plate 20 and transmits the pressure to the hot stamping paper 18 to achieve local pressure.

[0030] In this embodiment, a through cavity 9 is also provided on the side plate 3. One set of through cavities 9 is equipped with an unwinding shaft 19, and another set of through cavities 9 is equipped with a winding shaft 10. The unwinding shaft 19 can release the hot stamping foil 18, and the winding shaft 10 can wind up the hot stamping foil 18.

[0031] In this embodiment, hot stamping foil 18 is wound on both the unwinding shaft 19 and the winding shaft 10. One end of the winding shaft 10 is connected to the winding motor 11. After hot stamping is completed, the winding motor 11 winds up the hot stamping foil 18 through the winding shaft 10, while the unwinding shaft 19 releases the hot stamping foil 18. The new pattern is urgently needed to be hot stamped on the corrugated cardboard.

[0032] In this embodiment, a support 4 is fixed on one side wall of the side plate 3. A bidirectional screw 5 is rotatably arranged between the supports 4. A limit post 7 is provided on one side of the bidirectional screw 5. A knob is reserved at one end of the bidirectional screw 5. The knob can drive the bidirectional screw 5 to rotate, thereby causing the screw block 8 to move the guide plate 6 under the action of the screw thread and the limit post 7. The spacing between the guide plates 6 is adjusted according to the width of the corrugated cardboard.

[0033] In this embodiment, two sets of screw blocks 8 are symmetrically sleeved on the bidirectional screw 5 and the limiting post 7. The bottom end of the screw block 8 is fixed with a guide plate 6. The two sets of guide plates 6 are in a figure-eight shape. During the conveying process, the guide plate 6 can guide the corrugated cardboard and straighten it, so as to avoid the hot stamping pattern from being skewed due to the skewed corrugated cardboard during the hot stamping process, thus ensuring the hot stamping performance of the device.

[0034] A method for using a post-hot stamping device for a corrugated cardboard printing machine: First, place the device in position and connect it to an external power source. During operation, the double-headed screw 5 is rotated by a knob, causing the screw block 8 to move the guide plate 6 under the action of the thread and the limiting post 7. The spacing between the guide plates 6 is adjusted according to the width of the corrugated cardboard. Then, the corrugated cardboard is conveyed by the conveyor belt 2. During the conveying process, the guide plates 6 guide and straighten the cardboard, preventing the hot stamping pattern from becoming skewed due to the corrugated cardboard being skewed, thus ensuring the hot stamping performance of the device. The straightened corrugated cardboard is conveyed to the bottom of the hot stamping foil 18. The servo motor 15 drives the stud 14 to rotate, causing the lifting plate 16 to move the pressure block 17 downward under the action of the thread and the guide rod 13, and apply pressure to the hot stamping foil 18. The hot stamping foil 18 is pressed onto the surface of the corrugated cardboard. Then, the flexible heating plate 20 heats the hot stamping foil 18 to print the pattern on the hot stamping foil 18 onto the surface of the corrugated cardboard. During the hot stamping process, the electric push rod 25 pushes the roller 27 to apply pressure to the flexible heating plate 20 and transmits the pressure to the hot stamping foil 18. Then, the stepper motor 21 drives the lead screw 23 to rotate, so that the moving block 24 drives the roller 27 to move back and forth along the surface of the hot stamping foil 18 under the action of the screw and the guide column 22, so as to achieve rolling on the surface of the hot stamping foil 18, ensuring uniform pressure and improving the hot stamping effect of the device. After the hot stamping is completed, the conveyor belt 2 transports the corrugated cardboard, the winding motor 11 winds the hot stamping foil 18 through the winding shaft 10, and at the same time, the unwinding shaft 19 releases the hot stamping foil 18. The new pattern needs to be hot stamped on the corrugated cardboard.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A post-hot stamping device for a corrugated cardboard printing machine, characterized in that: The system includes a conveyor frame (1), with a conveyor belt (2) installed inside the upper end of the conveyor frame (1). Two sets of side plates (3) are symmetrically installed on both sides of the upper end of the conveyor frame (1). The side plates (3) have through slots (12). One set of through slots (12) has a stud (14) installed in it, and the other set of through slots (12) has a guide rod (13) installed in it. One end of the stud (14) is connected to a servo motor (15). Lifting plates (16) are fitted on both the stud (14) and the guide rod (13). A pressure block (17) is fixed at the bottom of the lifting plate (16). A flexible heating plate (20) is fixed on the bottom wall of the pressure block (17). A stepper motor (21) is installed on one side wall of the pressure block (17). A lead screw (23) is fixed on the output shaft of the stepper motor (21). A guide column (22) is provided above the lead screw (23). A moving block (24) is sleeved on both the guide column (22) and the lead screw (23). An electric push rod (25) is fixed at the bottom of the moving block (24). A lifting seat (26) is installed on the movable part of the electric push rod (25). A roller (27) is installed inside the lifting seat (26).

2. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: The output shaft of the servo motor (15) is fixedly connected to one end of the stud (14), the lifting plate (16) is connected to the stud (14) by a thread, and the guide rod (13) passes through the lifting plate (16).

3. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: The pressure block (17) is fixed to the bottom end of the lifting plate (16) by bolts, and the flexible heating plate (20) is made of silicone rubber.

4. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: The output shaft of the stepper motor (21) is fixedly connected to one end of the lead screw (23), the guide post (22) is fixed inside the pressure block (17), the moving block (24) is connected to the lead screw (23) by a thread, the guide post (22) passes through the moving block (24), and a heat dissipation mesh is installed on one side wall of the pressure block (17).

5. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: The electric push rod (25) is fixed to the bottom of the moving block (24) by screws, the lifting seat (26) is fixed to the movable part of the electric push rod (25) by screws, and the roller (27) is rotatably installed in the lifting seat (26).

6. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: The side plate (3) is also provided with a through cavity (9), one of the through cavities (9) is equipped with an unwinding shaft (19), and the other through cavity (9) is equipped with a winding shaft (10).

7. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 6, characterized in that: Hot foil (18) is wrapped around both the unwinding shaft (19) and the winding shaft (10), and a winding motor (11) is connected to one end of the winding shaft (10).

8. The post-hot stamping equipment for a corrugated cardboard printing machine according to claim 1, characterized in that: A support (4) is fixed on one side wall of the side plate (3), and a bidirectional screw (5) is rotatably arranged between the supports (4). A limit post (7) is provided on one side of the bidirectional screw (5), and a knob is reserved at one end of the bidirectional screw (5).

9. A post-hot stamping device for a corrugated cardboard printing machine according to claim 8, characterized in that: Two sets of screw blocks (8) are symmetrically sleeved on the bidirectional screw (5) and the limiting post (7). The bottom end of the screw block (8) is fixed with a guide plate (6), and the two sets of guide plates (6) are in a figure-eight shape.

10. A method of using a post-hot stamping device for a corrugated cardboard printing machine, applied to the post-hot stamping device for a corrugated cardboard printing machine as described in any one of claims 1 to 9, characterized in that: First, place the device in position and connect it to an external power source. During the use of the device, the double-acting screw (5) is rotated by the knob, which causes the screw block (8) to move the guide plate (6) under the action of the thread and the limiting post (7). The spacing between the guide plates (6) is adjusted according to the width of the corrugated cardboard. Then, the corrugated cardboard is conveyed by the conveyor belt (2). During the conveying process, the guide plate (6) can guide and straighten it to avoid the hot stamping pattern from being skewed due to the corrugated cardboard being skewed during the hot stamping process, thus ensuring the hot stamping performance of the device. The straightened corrugated cardboard is conveyed to the bottom of the hot stamping paper (18). The servo motor (15) drives the stud (14) to rotate, causing the lifting plate (16) to move the pressure block (17) down under the action of the thread and the guide rod (13) and apply pressure to the hot stamping paper (18) so that it is on the surface of the corrugated cardboard. Then, the flexible heating plate ( 20) Heating the hot stamping foil (18) prints the pattern on the hot stamping foil (18) onto the surface of the corrugated cardboard. During the hot stamping process, the electric push rod (25) pushes the roller (27) to apply pressure to the flexible heating plate (20) and transmits the pressure to the hot stamping foil (18). Then, the stepper motor (21) drives the lead screw (23) to rotate, causing the moving block (24) to drive the roller (27) under the action of the thread and the guide post (22). 7) Move back and forth along the surface of the hot stamping foil (18) to roll the surface of the hot stamping foil (18), ensuring uniform pressure and improving the hot stamping effect of the device. After hot stamping is completed, the conveyor belt (2) transports the corrugated cardboard, the winding motor (11) winds up the hot stamping foil (18) through the winding shaft (10), and at the same time the unwinding shaft (19) releases the hot stamping foil (18). The new pattern is urgently needed to hot stamp the corrugated cardboard.

Images