Leapfrogging device of cold stamping printing machine

Abstract

The utility model provides a leapfrogging device of a cold stamping printing machine, which comprises a rubber roller and a rack, the rack is fixed on a main machine of the cold stamping printing machine, the rack is rotatably connected with a support roller, and the support roller is positioned below the rubber roller and is arranged in parallel with the rubber roller. An unwinding air expansion shaft used for unwinding a cold stamping foil roll and a winding air expansion shaft used for winding cold stamping foil are rotationally connected to the rack, conveying rollers are rotationally connected to the two ends of the rack, a conveying belt is connected between the two conveying rollers, a supporting shaft is rotationally connected to the side wall of the rack, and a supporting plate is rotationally connected to the supporting shaft. The rubber roller is rotatably connected to the middle of the supporting plate, a power motor is fixedly connected to the side wall of the rack, a connecting rod is slidably connected to the side wall of the rack, the power motor enables the connecting rod to move in the length direction of the connecting rod through a transmission mechanism, and a sliding groove is formed in the supporting plate in the length direction of the supporting plate. The technical effect of improving the utilization rate of the cold stamping foil coil is achieved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a cold stamping printing machine, in particular to a step skipping device of the cold stamping printing machine. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN208392848U discloses a screen printing sheet-fed cold stamping machine, which includes a paper feeding section sequentially connected to a screen printing and gluing section, an ultraviolet light curing section, a cold stamping section and a paper receiving section.

[0003] Among them, the printed product is sent between the lower synchronous conveying roller and the upper synchronous conveying pressure wheel arranged up and down. The cold stamping mechanism is also equipped with a rubber cylinder and an impression cylinder arranged vertically up and down. The lower synchronous conveying roller and the upper synchronous conveying pressure wheel rotate synchronously towards each other to send the printed product between the rubber cylinder and the impression cylinder. A cold stamping foil conveying mechanism is installed above the cold stamping mechanism. There are two cold stamping foil roll air expansion shafts driven by a servo motor on the cold stamping foil conveying mechanism. The cold stamping foil roll air expansion shaft is installed with a cold stamping electrochemical aluminum foil roll, and the waste cold stamping foil roll air expansion shaft is installed with recycled waste cold stamping foil roll. The cold stamping electrochemical aluminum foil passes around the rubber cylinder through multiple foil passing rollers and foil passing shafts and is wound on the waste cold stamping foil roll air expansion shaft. Driven by the driving servo motor of the waste cold stamping foil roll air expansion shaft, the electrochemical aluminum foil is synchronously wound on the waste cold stamping foil roll air expansion shaft.

[0004] The cold foil roll is continuously unwound, and the cold foil is covered on the paper by the pressure of the rubber roller and the impression roller, and then the waste cold foil is wound on the air expansion shaft of the waste cold foil roll. However, the paper is printed one by one, and the next paper can be printed after the previous paper is printed. Therefore, there will be a transmission gap between the front and back two sheets of paper. This transmission gap is generally about 20cm, and the cold foil will be wasted by 20cm, which will cause the low utilization rate of cold foil and increase production costs. Utility Model Content

[0005] In view of this, the utility model aims to provide a step skipping device for a cold foil printing machine, so as to improve the utilization rate of cold foil and reduce the production cost.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a skipping device of a cold stamping printing machine, comprising a rubber roller and a frame, the frame is fixed on the main machine of the cold stamping printing machine, the frame is rotatably connected with a support roller, the support roller is located below the rubber roller and is arranged in parallel, the frame is rotatably connected with an unwinding air expansion shaft for unwinding a cold stamping foil roll and a winding air expansion shaft for winding up the cold stamping foil, the two ends of the frame are rotatably connected with conveying rollers, a conveyor belt is connected between the two conveying rollers, the support roller and the rubber roller have opposite directions, the side wall of the frame is rotatably connected with a support shaft, the support shaft is rotatably connected with a support plate, the rubber roller is rotatably connected to the middle part of the support plate, the side wall of the frame is fixedly connected with a power motor, the side wall of the frame is slidably connected with a connecting rod, the power motor moves the connecting rod along its own length direction through a transmission mechanism, the support plate is provided with a slide groove along its own length direction, and the connecting rod is rotatably connected with a slider slidably connected in the slide groove.

[0007] To implement the above technical solution, paper is placed on the conveyor belt, and the conveyor roller rotates to drive the paper to move in the direction close to the support roller. The unwinding air shaft unwinds the cold foil roll, and the cold foil passes around the rubber roller and is wound on the winding air shaft. When the paper is close to the support roller, the power motor is started, and the connecting rod is moved downward along its own length through the transmission mechanism. The slider contacts the inner wall of the slide groove and drives the support plate to move downward, so that the rubber roller drives the cold foil to move in the direction close to the support roller. After the paper is printed, the power motor is started again. Similarly, the connecting rod moves upward to move the rubber roller away from the support roller. At this time, the cold foil stops transmitting, thereby reducing the waste of cold foil, improving the utilization rate of cold foil rolls, and reducing production costs.

[0008] As a preferred solution of the utility model, the transmission mechanism includes a first gear, a second gear, and a solenoid. The first gear is fixed on the power shaft of the power motor, the second gear is fixed on the outer wall of the solenoid and meshes with the first gear, the connecting rod is threadedly connected to the solenoid, a guide groove is provided on the outer wall of the connecting rod, the length direction of the guide groove is parallel to the axial direction of the connecting rod, and a guide shaft slidably connected to the guide groove is fixedly connected to the frame.

[0009] To implement the above technical solution, the power motor is started, the power shaft drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the screw tube to rotate, and the connecting rod moves along the axial direction of the screw tube through the conduction effect of the thread. At the same time, the guide shaft slides along the inner wall of the guide groove. The structure is compact and the response is fast.

[0010] As a preferred solution of the utility model, a mounting hole is provided on the frame, an infrared emitter is fixedly connected inside the frame, and the infrared emitter is connected to the power motor through a controller.

[0011] To implement the above technical solution, the conveyor belt rotates and conducts the paper toward the support roller. When the paper blocks the infrared transmitter, the infrared transmitter sends an electrical signal to the controller, and the controller sends an electrical signal to the power motor. Subsequently, the power motor starts, so that when the paper is close to the support roller, the rubber roller fits the support roller, thereby realizing the function of automatic control and improving practicality.

[0012] As a preferred solution of the utility model, a limit cylinder is fixedly connected to the frame, a fixed plate is fixedly connected to the telescopic rod of the limit cylinder, a plurality of correcting rods are connected to the fixed plate, the infrared transmitter is located between the plurality of correcting rods, a limit hole is provided on the frame, the correcting rod is used to extend from the limit hole and contact with the end of the substrate, and the limit cylinder is electrically connected to the controller.

[0013] To implement the above technical solution, as the paper is being conveyed along the conveyor belt, the conveying roller will generate a certain vibration, and the vibration is transmitted to the paper through the conveyor belt, causing the paper to deviate, and the end of the inclined paper will collide with the correcting rod. As the conveyor belt continues to conduct, the end of the inclined paper will collide with multiple correcting rods. At this time, the paper is straight and covers the infrared transmitter. At this time, the infrared transmitter sends an electrical signal to the controller, the limit cylinder starts and the correcting rod is pulled out of the limit hole, separating the paper from the correcting rod, and starting the power motor, thereby achieving the effect of fully automatic control and further improving practicality.

[0014] As a preferred solution of the utility model, an adjustment groove is provided on the fixed plate, and the adjustment groove is arranged along the width direction of the fixed plate. An adjustment block is slidably connected in the adjustment groove, and the adjustment block is connected to the correction rod. An adjustment rod is rotatably connected in the adjustment groove, and the adjustment rod is threadedly connected to the adjustment block.

[0015] To implement the above technical solution, the adjusting rod is rotated, and the adjusting block is moved along the length direction of the adjusting slot through the conduction effect of the thread, so as to adjust the position of the correcting rod to adapt to papers of different shapes and improve practicality. The self-locking property of the thread is used to position the adjusting block on the adjusting slot.

[0016] As a preferred solution of the utility model, it also includes two conduction rollers, which are rotatably connected to the inner wall of the frame, the axis of the conduction roller is parallel to the axis of the support roller, and the two conduction rollers are respectively located on both sides of the rubber roller.

[0017] Implementing the above technical solution makes the cold foil transmission more stable, less prone to wrinkles, and improves production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the external structure of the utility model;

[0019] Figure 2 A schematic diagram showing the position of the conduction roller;

[0020] Figure 3 A schematic diagram showing the structure of the transmission mechanism;

[0021] Figure 4 A schematic diagram showing the position of the limit cylinder;

[0022] Figure 5 for Figure 4 A magnified image of point A;

[0023] Figure 6 Figure 2 is a schematic diagram of the location of the mounting holes.

[0024] Attached figures: 1. rubber roller; 2. frame; 3. main machine of cold stamping press; 4. support roller; 5. unwinding air shaft; 6. rewinding air shaft; 7. conveying roller; 8. conveying belt; 9. support shaft; 10. support plate; 11. power motor; 12. connecting rod; 13. transmission mechanism; 14. first gear; 15. second gear; 16. screw tube; 17. guide groove; 18. guide shaft; 19. slide groove; 20. slide block; 21. mounting hole; 22. infrared transmitter; 23. controller; 24. limit cylinder; 25. telescopic rod; 26. fixing plate; 27. correction rod; 28. limit hole; 29. ​​adjustment groove; 30. adjustment rod; 31. adjustment block. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0026] A skipping device for a cold stamping press comprises a rubber roller 1 and a frame 2. The frame 2 is fixed to a main machine 3 of the cold stamping press. A support roller 4 is rotatably connected to the frame 2, and the support roller 4 is located in the middle of the frame 2 and is arranged horizontally. The support roller 4 is located below the rubber roller 1, and the axis of the support roller 4 is arranged parallel to the axis of the rubber roller 1. A conveying roller 7 is rotatably connected to the frame 2, and the axis of the conveying roller 7 is parallel to the axis of the support roller 4. A conveying belt 8 made of rubber is connected between the two conveying rollers 7.

[0027] An unwinding air shaft 5 for unwinding the cold foil roll and a winding air shaft 6 for winding the cold foil are rotatably connected to the frame 2 .

[0028] The support roller 4, the unwinding air shaft 5 and the winding air shaft 6 are all driven by a servo motor (not shown in the figure).

[0029] The support roller 4 and the rubber roller 1 rotate in opposite directions. The two conduction rollers are rotatably connected to the inner wall of the frame 2, and the axis of the conduction roller is parallel to the axis of the support roller 4. The two conduction rollers are respectively located on both sides of the rubber roller 1 to flatten the cold foil and improve production quality.

[0030] A support shaft 9 is rotatably connected to the side wall of the frame 2, and a support plate 10 is rotatably connected to the support shaft 9. The rubber roller 1 is rotatably connected to the middle of the support plate 10. The rubber roller 1 is driven by an active motor (not shown in the figure), which is a servo motor and is fixed to the support plate 10.

[0031] A vertically arranged power motor 11 is fixedly connected to the side wall of the frame 2 , and a connecting rod 12 is slidably connected to the side wall of the frame 2 . The power motor 11 moves the connecting rod 12 along its length direction through a transmission mechanism 13 .

[0032] The transmission mechanism 13 includes a first gear 14, a second gear 15, and a solenoid 16. The first gear 14 is fixed to the power shaft of the power motor 11, and the second gear 15 is fixed to the outer wall of the solenoid 16 and meshes with the first gear 14. The solenoid 16 is vertically arranged and rotatably connected to the side wall of the frame 2. The connecting rod 12 is inserted into the solenoid 16 and is threadedly connected to the inner wall of the solenoid 16.

[0033] A guide groove 17 is formed on the outer wall of the connecting rod 12 . The length direction of the guide groove 17 is parallel to the axial direction of the connecting rod 12 . A guide shaft 18 is fixedly connected to the frame 2 and slidably connected to the guide groove 17 .

[0034] The power motor 11 is a servo motor. When the power motor 11 is started, the power shaft drives the first gear 14 to rotate, the first gear 14 drives the second gear 15 to rotate, and the second gear 15 drives the solenoid 16 to rotate, and the connecting rod 12 can move along its own axial direction through the conduction effect of the thread.

[0035] The support plate 10 is provided with a slide groove 19 along its length direction, and a slider 20 slidably connected to the slide groove 19 is rotatably connected to the lower end of the connecting rod 12 .

[0036] When the connecting rod 12 moves downward, the support plate 10 can be moved downward along the axis of the support shaft 9, and at the same time, the rubber roller 1 moves toward the direction close to the support roller 4. Similarly, when the connecting rod 12 moves upward, the rubber roller 1 moves away from the support roller 4.

[0037] The frame 2 is provided with a mounting hole 21, which is located on the center line of the frame 2. An infrared transmitter 22 is fixedly connected in the frame 2, and the infrared transmitter 22 is connected to the power motor 11 through a controller 23. The controller 23 is a PLC controller 23.

[0038] A vertically arranged limit cylinder 24 is fixedly connected to the frame 2, a horizontally arranged fixed plate 26 is fixedly connected to the telescopic rod 25 of the limit cylinder 24, four vertically arranged deviation correction rods 27 are connected to the fixed plate 26, and the infrared transmitter 22 is located between two deviation correction rods 27. The infrared transmitter 22 is located in front of the line formed by the plurality of limit holes 28.

[0039] A limit hole 28 is provided on the frame 2 , and the deviation correction rod 27 is used to extend from the limit hole 28 and contact with the end of the substrate. The limit cylinder 24 is electrically connected to the controller 23 .

[0040] The paper is placed on the conveyor belt 8, and the conveyor roller 7 rotates so that the conveyor belt 8 conducts the paper toward the support roller 4. After the end of the paper contacts a deflection correction rod 27, as the conveyor belt 8 continues to rotate, the end of the paper contacts all the deflection correction rods 27. At this time, the paper must cover the mounting hole 21. After the infrared transmitter 22 is blocked by the paper, the infrared transmitter 22 sends an electrical signal to the controller 23, and the controller 23 sends an electrical signal to the limit cylinder 24 and the power motor 11. The limit cylinder 24 starts, and the deflection correction rod 27 is pulled out of the connecting groove and separated from the paper. The power motor 11 starts, and the rubber roller 1 moves down. The paper continues to be transmitted along with the conveyor belt 8. When the paper is close to the support roller 4, the rubber roller 1 is close to the support roller 4, so that when the paper is between the rubber roller 1 and the support roller 4, the cold foil can cover the paper.

[0041] After the paper is transmitted between the support roller 4 and the rubber roller 1, the rubber roller 1 moves away from the support roller 4, and at the same time, the cold foil stops conducting, so as to greatly improve the utilization rate of the cold foil roll and reduce the production cost.

[0042] The fixing plate 26 is provided with an adjustment slot 29, which is arranged along the width direction of the fixing plate 26. An adjustment block 31 is slidably connected in the adjustment slot 29, and the adjustment block 31 is connected to the deviation correction rod 27. An adjustment rod 30 is rotatably connected in the adjustment slot 29; the adjustment rod 30 is threadedly connected to the adjustment block 31. The axial direction of the adjustment rod 30 is parallel to the length direction of the adjustment slot 29.

[0043] The infrared transmitter 22 is to be used together with the infrared receiver. The infrared transmitter 22 and the infrared structure are prior art and will not be described in detail in this embodiment.

[0044] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A skipping device for a cold foil printing machine, comprising a rubber roller and a frame, wherein the frame is fixed to a main machine of the cold foil printing machine, a support roller is rotatably connected to the frame, the support roller is located below the rubber roller and is arranged in parallel, an unwinding air shaft for unwinding a cold foil roll and a winding air shaft for winding the cold foil are rotatably connected to the frame, conveying rollers are rotatably connected to both ends of the frame, a conveying belt is connected between the two conveying rollers, and the rotation directions between the support roller and the rubber roller are opposite, wherein: A support shaft is rotatably connected to the side wall of the frame, and a support plate is rotatably connected to the support shaft. The rubber roller is rotatably connected to the middle part of the support plate. A power motor is fixedly connected to the side wall of the frame, and a connecting rod is slidably connected to the side wall of the frame. The power motor moves the connecting rod along its own length direction through a transmission mechanism. A sliding groove is opened along its own length direction, and a slider slidably connected to the sliding groove is rotatably connected to the connecting rod.

2. The step skipping device of a cold foil printing machine according to claim 1, characterized in that: The transmission mechanism includes a first gear, a second gear, and a solenoid. The first gear is fixed on the power shaft of the power motor, the second gear is fixed on the outer wall of the solenoid and meshes with the first gear, the connecting rod is threadedly connected to the solenoid, a guide groove is provided on the outer wall of the connecting rod, the length direction of the guide groove is parallel to the axial direction of the connecting rod, and a guide shaft slidably connected to the guide groove is fixedly connected to the frame.

3. The step skipping device of a cold foil printing machine according to claim 1, characterized in that: The frame is provided with a mounting hole, an infrared emitter is fixedly connected inside the frame, and the infrared emitter is connected to the power motor through a controller.

4. The step skipping device of a cold foil printing machine according to claim 3, characterized in that: The frame is fixedly connected to a limit cylinder, the telescopic rod of the limit cylinder is fixedly connected to a fixed plate, a plurality of correcting rods are connected to the fixed plate, the infrared transmitter is located between the plurality of correcting rods, a limit hole is provided on the frame, the correcting rod is used to extend from the limit hole and contact with the end of the substrate, and the limit cylinder is electrically connected to a controller.

5. The step skipping device of a cold foil printing machine according to claim 4, characterized in that: The fixing plate is provided with an adjustment slot, which is arranged along the width direction of the fixing plate. An adjustment block is slidably connected in the adjustment slot, and the adjustment block is connected to the deviation correction rod. An adjustment rod is rotatably connected in the adjustment slot, and the adjustment rod is threadedly connected to the adjustment block.

6. The step skipping device of a cold foil printing machine according to claim 1, characterized in that: It also includes two conduction rollers, which are rotatably connected to the inner wall of the frame, the axis of the conduction roller is parallel to the axis of the support roller, and the two conduction rollers are respectively located on both sides of the rubber roller.

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