Tipping paper silvering processing equipment

Abstract

This application discloses a hot stamping equipment for tipping paper, relating to the technical field of hot stamping on tipping paper. The equipment includes an unwinding mechanism, a stamping mechanism, and a rewinding mechanism. The stamping mechanism includes a self-rotating unwinding roller, an impression roller, a mating roller, and a rewinding roller. The rewinding roller is connected to a driving element. The impression roller and the mating roller are arranged adjacent to each other, with a material feeding gap forming between them. The impression roller is connected to an elastic pressing mechanism configured to apply an elastic pressing force to the impression roller in the direction of the mating roller. The impression roller includes a raised ring on its outer wall, the raised ring being distributed around the circumference of the impression roller, and a heating element is embedded in the raised ring. This application can improve the consistency of the stamped lines.

Description

Technical Field

[0001] This application relates to the technical field of hot stamping on tipping paper, and in particular to a hot stamping processing device for tipping paper. Background Technology

[0002] As a special tipping material for cigarette filters, tipping paper requires perforation for ventilation and hot stamping during production. Hot stamping not only defines product dimensions but also enhances the appearance and brand recognition of the cigarettes. With the cigarette industry's increasing demands for health performance and aesthetic quality, tipping paper hot stamping is gradually moving towards higher speeds and precision. Continuous roll processing using electroplated aluminum hot stamping has become the mainstream production method in the industry.

[0003] Currently, hot stamping equipment for tipping paper mainly consists of an unwinding mechanism, a hot stamping mechanism, and a rewinding mechanism. The heating rollers are mostly smooth cylindrical. The hot stamping process relies on the heating rollers, which heat the entire surface, to press the electroplated aluminum onto the tipping paper roll to achieve the transfer, i.e., to imprint lines on the tipping paper. During equipment operation, the electroplated aluminum and tipping paper are conveyed synchronously, and the hot stamping is completed under the action of heating and pressure. Then, the rewinding mechanism rolls the processed tipping paper into a finished roll.

[0004] The aforementioned technology has the following problems: Because the outer circumference of the heating roller, the working part of the hot stamping process, is constantly subjected to high temperature, high pressure, and high-frequency friction, it is prone to wear. Wear leads to uncontrollable effective contact surface, resulting in poor contact and uneven pressure distribution. This causes the stamped lines to become thicker, weaker, and less firmly transferred, affecting line consistency and positional accuracy. Furthermore, when the heating roller presses the electroplated aluminum foil, it simultaneously contacts the tipping paper roll. Since the heating roller is heated as a whole, the tipping paper roll is fully covered and heated in the width direction. Due to the material properties, the tipping paper may experience dimensional drift and elongation, leading to inconsistent stamping depth and further affecting line consistency. Summary of the Invention

[0005] To improve the consistency of the embossed lines, this application provides a hot stamping equipment for cork paper.

[0006] The technical solution of the cork paper hot stamping equipment provided in this application is as follows: A hot stamping equipment for cork paper includes an unwinding mechanism, a hot stamping mechanism, and a rewinding mechanism; The hot stamping mechanism includes a self-rotating feeding roller, an impression roller, a mating roller, and a receiving roller. The receiving roller is connected to a driving element. The impression roller and the mating roller are arranged adjacent to each other, and a feeding gap is formed between them. The impression roller is connected to an elastic pressing mechanism, which is configured to apply an elastic pressing force to the impression roller in the direction of the mating roller. The impression roller includes a convex ring on its outer wall, which is distributed around the circumference of the impression roller. A heating element is embedded in the convex ring.

[0007] By adopting the above technical solution, the heating element can directionally heat the raised ring, thereby efficiently transferring heat to the hot stamping working area. The raised ring only contacts the hot stamping area of ​​the electroplated aluminum and the tipping paper, which can significantly reduce the heated area of ​​the non-hot stamping area of ​​the tipping paper and avoid problems such as dimensional drift and elongation deformation of the tipping paper due to large-area heating. When the raised ring wears down and the electroplated aluminum on the impression roller cannot fully adhere to the tipping paper, the elastic pressing mechanism can continuously and stably apply elastic pressing force towards the mating roller to the impression roller, thereby ensuring that the impression roller always reliably presses the electroplated aluminum and tipping paper onto the mating roller. This design can reduce the occurrence of poor contact of the effective contact surface of hot stamping and uneven hot stamping pressure caused by long-term friction and wear of the raised ring, and can ensure the consistency of the hot stamping lines, clear edges and positional accuracy, thus improving the consistency of the lines produced by hot stamping tipping paper.

[0008] Preferably, the convex ring includes an opposing imprinting end face and a connecting end face, the imprinting end face being located on the side of the connecting end face away from the center of the imprinting roller, and the thickness of the convex ring along the axial direction of the imprinting roller gradually increases from the imprinting end face toward the connecting end face.

[0009] By adopting the above technical solution, the imprinting end face of the raised ring has a smaller contact area, allowing for more concentrated hot stamping pressure. The surface contact form ensures the reliability of the imprinting. The thickness of the raised ring gradually increases from the imprinting end face towards the connecting end face along the axis of the imprinting roller, which improves the structural strength and wear resistance of the raised ring and reduces the impact of local wear on the line shape. Specifically, as time goes by and wear intensifies, the size of the imprinting end face on the raised ring gradually increases, thus improving the wear resistance of the raised ring. Furthermore, the service life of the raised ring can be estimated by measuring its height.

[0010] Preferably, the cross-section of the convex ring in the direction of the axial direction of the impression roller is an isosceles trapezoid.

[0011] By adopting the above technical solution, the convex ring can be subjected to uniform and symmetrical force in the axial direction of the printing roller, and there is no off-center load or lateral tilt during the printing process, which can avoid defects such as skewing, rough edges, and uneven depth of hot stamping lines.

[0012] Preferably, it includes a frame; the elastic pressing mechanism includes a reciprocating drive component mounted on the frame, a mounting tube connected to the reciprocating drive component, a connector slidably connected to the mounting tube, and a pressing spring with its two ends respectively connected to the mounting tube and the connector, and the impression roller is rotatably connected to the connector.

[0013] By adopting the above technical solution, the overall position of the mounting tube can be adjusted by the reciprocating drive component to adapt to the processing requirements of cork paper and electroplated aluminum of different thicknesses; the adjustable overall position of the mounting tube and the elastic pressing design can also ensure that the stamping roller always maintains a stable hot stamping contact force.

[0014] Preferably, the device includes a control module. The mounting tube is equipped with a detection element, which is used to detect the compression of the pressing spring to help calculate the pressure of the impression roller on the tipping paper. Both the detection element and the reciprocating drive are connected to the control module. The control module controls the operation of the reciprocating drive in response to the detection signal of the detection element.

[0015] By adopting the above technical solution, the compression amount of the pressing spring can be obtained in real time through the detection component, and the actual hot stamping pressure of the printing roller on the tipping paper can be accurately calculated; the control module can automatically adjust the action of the reciprocating drive component according to the detection signal, and can compensate for the pressure deviation in real time, so that the hot stamping pressure remains constant.

[0016] Preferably, the winding mechanism includes a support frame, the support frame is provided with a rotatable winding roller, a pressure roller is provided on one side of the winding roller, the pressure roller is connected to a feed member, the pressure roller is connected to a reciprocating drive member, and the reciprocating drive member is configured to apply a force to the pressure roller in the direction toward the winding roller.

[0017] By adopting the above technical solution, when the reciprocating drive causes the pressure roller to press against the tipping paper being wound by the take-up roller, the drive feeder can rotate the tipping paper to complete the take-up process. This design can minimize the impact on the overall operation of the tipping paper as the amount of tipping paper wound by the take-up roller increases, and avoid the tipping paper being conveyed too tightly or too loosely. In addition, the pressure of the pressure roller on the tipping paper on the take-up roller can also prevent the tipping paper roll from becoming airtight or loose, ensuring that the tension of the tipping paper roll is consistent in all positions for subsequent transportation.

[0018] Preferably, the support frame includes a receiving groove, and the take-up roller includes a mounting shaft that passes through the receiving groove and is capable of being separated from the receiving groove to disassemble the take-up roller.

[0019] By adopting the above technical solution, the mounting shaft of the take-up roll and the receiving groove can be quickly separated and assembled, which can simplify the disassembly and replacement process of the take-up roll, shorten the downtime for roll changing, and improve the production efficiency of the equipment.

[0020] Preferably, the impression roller includes a tube body rotatably connected to the elastic pressing mechanism, and a convex ring is provided on the outer wall of the tube body; the inner wall of the tube body has a connecting hole, and the convex ring has a docking hole near one end of the tube body, the docking hole being a blind hole, and the connecting hole and the docking hole being detachably connected to a fastener.

[0021] By adopting the above technical solution, the convex ring can be replaced separately after it wears out, without having to replace the entire impression roller, which can reduce equipment maintenance costs and replacement difficulty.

[0022] In summary, the present invention has at least one of the following beneficial technical effects: 1. In this application, the heating element directionally heats the raised ring, thereby efficiently transferring heat to the hot stamping working area. The raised ring only contacts the hot stamping area of ​​the electroplated aluminum and the tipping paper, which can significantly reduce the heated area of ​​the non-hot stamping area of ​​the tipping paper and avoid problems such as dimensional drift and elongation deformation of the tipping paper due to large-area heating. When the raised ring wears down and the electroplated aluminum on the impression roller cannot fully adhere to the tipping paper, the elastic pressing mechanism can continuously and stably apply elastic pressing force towards the mating roller to the impression roller, thereby ensuring that the impression roller always reliably presses the electroplated aluminum and tipping paper onto the mating roller. This design can reduce the occurrence of poor contact of the effective contact surface of hot stamping and uneven hot stamping pressure caused by long-term friction and wear of the raised ring, and can ensure the consistency of the hot stamping lines, clear edges and positional accuracy, and improve the consistency of the lines produced by hot stamping of tipping paper. 2. The small contact area of ​​the embossed ring's imprinting end face allows for more concentrated hot stamping pressure, and the surface contact ensures reliable imprinting. The gradually increasing thickness of the embossed ring along the axial direction of the imprinting roller from the imprinting end face towards the connecting end face enhances its structural strength and wear resistance, reducing the impact of localized wear on the line shape. Specifically, as wear intensifies over time, the size of the imprinting end face on the embossed ring gradually increases, thus improving its wear resistance. Furthermore, the service life of the embossed ring can be estimated by measuring its height. 3. In this application, the compression amount of the pressing spring can be obtained in real time through the detection component, and the actual hot stamping pressure of the printing roller on the tipping paper can be accurately calculated; the control module can automatically adjust the action of the reciprocating drive component according to the detection signal, and can compensate for the pressure deviation in real time, so that the hot stamping pressure remains constant. 4. When the take-up roller is winding the tipping paper, the pressure roller on the tipping paper on the take-up roller can also prevent the tipping paper roll from becoming airy or loose, and can ensure that the tightness of the tipping paper roll is consistent in all positions so as to facilitate subsequent transportation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the tipping paper hot stamping equipment in the embodiments of this application; Figure 2This is a cross-sectional view used to illustrate the equipment for hot stamping cork paper; Figure 3 It is a cross-sectional view used to illustrate the winding mechanism; Figure 4 This is a structural schematic diagram used to illustrate the support frame; Figure 5 This is a structural diagram illustrating the elastic compression mechanism; Figure 6 This is a sectional view used to illustrate the convex ring; Figure 7 It is a cross-sectional view used to illustrate the elastic compression mechanism.

[0024] In the attached diagram, the following are labeled: 1. Frame; 2. Unwinding mechanism; 21. Unwinding roller; 3. Tensioning mechanism; 31. Tensioning shaft; 32. Tensioning drive component; 33. Tensioning roller; 4. Hot stamping mechanism; 41. Feed roller; 42. Imprinting roller; 421. Convex ring; 4211. Imprinting end face; 4212. Connecting end face; 4213. Side end face; 4214. Butt joint hole; 422. Tube body; 4221. Connecting hole; 43. 44. Taking-up roller; 45. Feed gap; 46. Elastic pressing mechanism; 461. Reciprocating drive component; 462. Mounting tube; 463. Connecting component; 464. Pressing spring; 47. Detection component; 5. Winding mechanism; 51. Bearing frame; 511. Receiving groove; 5111. Limiting groove; 52. Winding roller; 521. Mounting shaft; 53. Pressing roller; 54. Reciprocating drive component; 55. Ball bearing. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0027] This application discloses a hot stamping equipment for tipping paper. It can improve the consistency of lines embossed on tipping paper. In this embodiment, four parallel lines are embossed on tipping paper as an example.

[0028] Reference Figure 1 and Figure 2 The cork paper hot stamping equipment includes a frame 1, on which are installed an unwinding mechanism 2, a tensioning mechanism 3, a hot stamping mechanism 4, and a rewinding mechanism 5.

[0029] The tipping paper roll is released using the unwinding mechanism 2, the tipping paper roll is wound up using the winding mechanism 5, the tension of the tipping paper is adjusted using the tensioning mechanism 3, and four lines are hot stamped on the tipping paper using the hot stamping mechanism 4.

[0030] Reference Figure 2 The unwinding mechanism 2 includes an unwinding roller 21 rotatably connected to the frame 1, and a motor connected to the unwinding roller 21 is mounted on the frame 1.

[0031] The tipping paper is wound onto the unwinding roller 21, and the driving motor can release the tipping paper.

[0032] Reference Figure 2 and Figure 3 The winding mechanism 5 includes a support frame 51 mounted on the frame 1. The support frame 51 is provided with a rotatable winding roller 52. A pressure roller 53 is provided on one side of the winding roller 52. The pressure roller 53 is connected to a feeder, such as a motor. The pressure roller 53 is connected to a reciprocating drive 54. The reciprocating drive 54 can drive the pressure roller 53 to move laterally. The reciprocating drive 54 is such as a cylinder. The reciprocating drive 54 can apply a force to the pressure roller 53 in the direction of the winding roller 52.

[0033] Reference Figure 3 and Figure 4 Specifically, the support frame 51 includes a receiving groove 511, which slopes upwards from left to right. The take-up roller 52 includes a mounting shaft 521 at its end, which passes through the receiving groove 511. The mounting shaft 521 can be separated from the receiving groove 511, allowing the take-up roller 52 to be disassembled. The disassembled take-up roller 52 is easy to unload and maintain. To ensure reliable rotation of the mounting shaft 521, i.e., the take-up roller 52, a limiting groove 5111 is provided on the inner wall of the receiving groove 511. The limiting groove 5111 contains a rotatable ball 55, which limits the ball 55 to prevent it from dislodging from the limiting groove 5111.

[0034] The take-up roller 52 is used to take up the tipping paper. The reciprocating drive 54 is driven so that the pressure roller 53 presses against the tipping paper taken up by the take-up roller 52. At this time, the tipping paper roll can be rotated by the drive feeder to complete the take-up.

[0035] The above design minimizes the impact on the overall operation of the tipping paper as the winding roll 52 continuously increases, thus avoiding excessively tight or loose conveying of the tipping paper. Furthermore, the pressure roller 53's pressure on the tipping paper on the winding roll 52 prevents the tipping paper roll from becoming airtight or loose, ensuring consistent tightness across the roll for easier subsequent transportation and storage.

[0036] Reference Figure 2The tensioning mechanism 3 includes a plurality of tensioning shafts 31 rotatably connected to the frame 1. In this embodiment, there are five tensioning shafts 31. The plurality of tensioning shafts 31 are distributed from the unwinding roller 21 toward the take-up roller 52. The plurality of tensioning shafts 31 are used to guide the stable movement of the tipping paper. At least one tensioning shaft 31 is connected to a motor to assist in moving the tipping paper.

[0037] Reference Figure 2 The tensioning mechanism 3 also includes a tensioning drive 32 mounted on the frame 1. The tensioning drive 32 is, for example, a cylinder, and the output shaft of the tensioning drive 32 is rotatably connected to a tensioning roller 33. In addition, a tension sensor is also provided on the frame 1 in order to calculate the tension of the tipping paper.

[0038] Tensioning the tipping paper is achieved by driving the tensioning drive 32 to move the tensioning roller 33 against the tipping paper. The tension of the tipping paper can be calculated using a tension sensor in conjunction with the wrap angle formed by the tipping paper around the tensioning shaft 31; the specific detection logic and calculation method are existing technologies. It should be noted that the tensioning roller 33 can be selectively activated to tension the tipping paper.

[0039] Reference Figure 2 The hot stamping mechanism 4 includes a feeding roller 41, an impression roller 42, a mating roller 43, and a take-up roller 44. The feeding roller 41, mating roller 43, and take-up roller 44 are all rotatably connected to the frame 1. The take-up roller 44 is connected to a driving component, such as a motor. The impression roller 42 and the mating roller 43 are arranged adjacent to each other, and a feeding gap 45 is formed between the impression roller 42 and the mating roller 43. The impression roller 42 is connected to an elastic pressing mechanism 46, which is mounted on the frame 1. The elastic pressing mechanism 46 is configured to apply an elastic pressing force to the impression roller 42 in the direction of the mating roller 43.

[0040] Reference Figure 5 The impression roller 42 includes a raised ring 421 on its outer wall. In this embodiment, four raised rings 421 are provided. The raised rings 421 are distributed around the circumference of the impression roller 42. A heating element is embedded in the raised ring 421, such as a heating roller, which can heat the raised ring 421.

[0041] When the tipping paper released by the unwinding roller 21 moves toward the take-up roller 52 through the feed gap 45, the electroplated aluminum is released by the unwinding roller 41 and is then wound up by the take-up roller 44 after being tensioned by the imprinting roller 42 and passing through the feed gap 45. At this time, the electroplated aluminum comes into contact with the tipping paper, and the heated convex ring 421 presses the electroplated aluminum and tipping paper onto the mating roller 43. The electroplated aluminum then performs line hot stamping on the tipping paper, i.e., hot stamping.

[0042] The heating element directionally heats the raised ring 421, thereby efficiently transferring heat to the hot stamping work area. The raised ring 421 only contacts the hot stamping area of ​​the electroplated aluminum and the tipping paper, which can reduce the heated area of ​​the non-hot stamping area of ​​the tipping paper and avoid problems such as dimensional drift, elongation and deformation of the tipping paper due to large-area heating.

[0043] When the convex ring 421 wears down, causing the electroplated aluminum on the impression roller 42 to not fully adhere to the tipping paper, the elastic pressing mechanism 46 can continuously and stably apply elastic pressing force towards the mating roller 43 to the impression roller 42, thereby ensuring that the impression roller 42 always reliably presses the electroplated aluminum and tipping paper onto the mating roller 43. This design can reduce the occurrence of poor contact of the effective contact surface of hot stamping and uneven hot stamping pressure caused by long-term friction and wear of the convex ring 421, and can ensure the consistency of the hot stamping lines.

[0044] Reference Figure 5 and Figure 6 Specifically, the convex ring 421 includes an opposing imprinting end face 4211 and a connecting end face 4212. The imprinting end face 4211 is located on the side of the connecting end face 4212 away from the center of the imprinting roller 42. The thickness of the convex ring 421 along the axial direction of the imprinting roller 42 gradually increases from the imprinting end face 4211 towards the connecting end face 4212. More specifically, the convex ring 421 includes a side end face 4213 located between the imprinting end face 4211 and the connecting end face 4212. The side end face 4213 can be an inclined plane or an arc surface. In this embodiment, the side end face 4213 is an inclined plane, and the cross-section of the convex ring 421 along the axial direction of the imprinting roller 42 is an isosceles trapezoid.

[0045] The stamping end face 4211 of the raised ring 421 has a small contact area, which allows the hot stamping pressure to be more concentrated. The form in which the raised ring 421 contacts the electroplated aluminum surface can ensure the reliability of the stamping.

[0046] The thickness of the raised ring 421 along the axis of the impression roller 42 gradually increases from the impression end face 4211 towards the connecting end face 4212, which improves the structural strength and wear resistance of the raised ring 421 and reduces the impact of local wear on the line shape. Specifically, as wear intensifies over time, the size of the impression end face 4211 on the raised ring 421 gradually increases, thus improving the wear resistance of the raised ring 421. Furthermore, the service life of the raised ring 421 can be estimated by measuring its height using external measuring tools to ensure consistently reliable line imprinting.

[0047] Reference Figure 5 and Figure 6To facilitate maintenance of the protruding ring 421, the impression roller 42 includes a tube 422 rotatably connected to the connector 463, with the protruding ring 421 located on the outer wall of the tube 422; the inner wall of the tube 422 has a connecting hole 4221, and the protruding ring 421 has a mating hole 4214 near one end of the tube 422. The mating hole 4214 is a blind hole, and the connecting hole 4221 and the mating hole 4214 are detachably connected to a fastener, such as a bolt.

[0048] When a manufacturer wishes to reduce the number of hot stamped lines on tipping paper, the designated raised ring 421 can be removed to release the pressure of the raised ring 421 on the tipping paper.

[0049] Reference Figure 5 and Figure 7 and combined Figure 2 The elastic pressing mechanism 46 includes a reciprocating drive 461 mounted on the frame 1, a mounting tube 462 connected to the reciprocating drive 461, a connector 463 slidably connected to the mounting tube 462, and a pressing spring 464 with its two ends connected to the mounting tube 462 and the connector 463 respectively. The pressing spring 464 is located inside the mounting tube 462, and the impression roller 42 is rotatably connected to the connector 463.

[0050] Reference Figure 5 and Figure 7 The tipping paper hot stamping equipment also includes a control module. A detection element 47, such as a laser rangefinder, is installed on the mounting tube 462. The detection element 47 can detect the displacement of the connector 463 to calculate the compression of the pressing spring 464. Based on the spring compression, the pressure exerted by the impression roller 42 on the tipping paper can be calculated. Both the detection element 47 and the reciprocating drive 461 are connected to the control module. The control module responds to the detection signal from the detection element 47 to control the operation of the reciprocating drive 461.

[0051] The overall position of the mounting tube 462 is adjusted by the reciprocating drive component 461 to adapt to the processing requirements of cork paper and electroplated aluminum of different thicknesses; the adjustable overall position of the mounting tube 462 and the elastic pressing design of the connector 463 can also ensure that the printing roller 42 always maintains a stable hot stamping contact force.

[0052] The implementation principle of the tipping paper hot stamping equipment in this embodiment is as follows: The tipping paper is wound onto the unwinding roller 21. The drive motor releases the tipping paper roll. Multiple tensioning shafts 31 guide the tipping paper to the take-up roller 52 for winding. The reciprocating drive 54 drives the pressure roller 53 to press against the tipping paper wound on the take-up roller 52. The drive feeder rotates the tipping paper roll to complete the winding process. The tipping paper released from the unwinding roller 21 moves towards the take-up roller 52 through the feed gap 45. The unwinding roller 41 releases electroplated aluminum foil, which is then tensioned by the impression roller 42 and wound by the take-up roller 44 after passing through the feed gap 45. At this time, the electroplated aluminum foil comes into contact with the tipping paper. The heated convex ring 421 presses the electroplated aluminum foil and tipping paper onto the mating roller 43, and the electroplated aluminum foil performs line hot stamping on the tipping paper, i.e., hot stamping.

[0053] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hot stamping equipment for cork paper, characterized in that: It includes an unwinding mechanism (2), a hot stamping mechanism (4), and a rewinding mechanism (5); The hot stamping mechanism (4) includes a self-rotating feeding roller (41), an impression roller (42), a mating roller (43), and a receiving roller (44). The receiving roller (44) is connected to a driving element. The impression roller (42) and the mating roller (43) are arranged adjacent to each other, and a feeding gap (45) is formed between the impression roller (42) and the mating roller (43). The impression roller (42) is connected to an elastic pressing mechanism (46), which is configured to apply an elastic pressing force to the impression roller (42) in the direction of the mating roller (43). The impression roller (42) includes a convex ring (421) on its outer wall. The convex ring (421) is distributed around the circumference of the impression roller (42), and a heating element is embedded in the convex ring (421).

2. The hot stamping equipment for cork paper according to claim 1, characterized in that: The convex ring (421) includes an opposing imprint end face (4211) and a connecting end face (4212). The imprint end face (4211) is located on the side of the connecting end face (4212) away from the center of the imprint roller (42). The thickness of the convex ring (421) along the axial direction of the imprint roller (42) gradually increases from the imprint end face (4211) toward the connecting end face (4212).

3. The hot stamping equipment for cork paper according to claim 2, characterized in that: The cross section of the convex ring (421) in the axial direction of the impression roller (42) is an isosceles trapezoid.

4. The hot stamping equipment for cork paper according to claim 1, characterized in that: The machine includes a frame (1); the elastic pressing mechanism (46) includes a reciprocating drive (461) mounted on the frame (1), a mounting tube (462) connected to the reciprocating drive (461), a connector (463) slidably connected to the mounting tube (462), and a pressing spring (464) with its two ends respectively connected to the mounting tube (462) and the connector (463), and the impression roller (42) is rotatably connected to the connector (463).

5. The cork paper hot stamping equipment according to claim 4, characterized in that: The device includes a control module. The mounting tube (462) is equipped with a detection element (47). The detection element (47) is used to detect the compression of the pressing spring (464) to help calculate the pressure of the impression roller (42) on the tipping paper. The detection element (47) and the reciprocating drive (461) are both connected to the control module. The control module controls the operation of the reciprocating drive (461) in response to the detection signal of the detection element (47).

6. The tipping paper hot stamping equipment according to claim 1, characterized in that: The winding mechanism (5) includes a support frame (51) with a rotatable winding roller (52). A pressure roller (53) is provided on one side of the winding roller (52). The pressure roller (53) is connected to a feed member and a reciprocating drive member (54) is connected to the pressure roller (53). The reciprocating drive member (54) is configured to apply a force to the pressure roller (53) in the direction toward the winding roller (52).

7. The hot stamping equipment for cork paper according to claim 6, characterized in that: The support frame (51) includes a receiving groove (511), and the take-up roller (52) includes a mounting shaft (521) which passes through the receiving groove (511) and can be separated from the receiving groove (511) to disassemble the take-up roller (52).

8. The cork paper hot stamping equipment according to claim 1, characterized in that: The impression roller (42) includes a tube (422) rotatably connected to the elastic pressing mechanism (46), and a convex ring (421) is provided on the outer wall of the tube (422). The inner wall of the tube (422) has a connecting hole (4221), and the convex ring (421) has a docking hole (4214) near one end of the tube (422). The docking hole (4214) is a blind hole, and the connecting hole (4221) and the docking hole (4214) are detachably connected to a fastener.

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