Imprint head with planetary gear mechanism

Abstract

An embossing machine comprising a planetary mechanism. The planetary mechanism includes more than one [missing information - likely a planetary system or mechanism] circumferentially distributed around a central axis of revolution with a given radius. I Each mold base is 80M. More than one. I Each planetary gear is connected to I Each mold base is 80M. I planetary gears and I Each mold base shares a corresponding planetary rotation axis and is configured to rotate together around the planetary rotation axis. The planetary rotation axis is configured to revolve around a central revolution axis. I Each of the mold holders 80M includes more than one mold 53M for imprinting multiple characters of different widths. The molds 53M are distributed angularly asymmetrically on the mold holder 80M according to the corresponding character widths to maximize the number of molds 53M on the mold holder 80M.

Description

background 1. Technical Field The present invention relates to a stamping head including a planetary gear mechanism, which increases the number of characters that can be selected in the stamping head.

[0001] 2. Description of related technologies Text or decorative patterns can be generated on the product using a hot foil stamping machine, in which foil is pressed between a heated stamping component and the surface of the product.

[0002] Hot stamping of titles, authors, and other information related to bookbinding has traditionally been done by contract binding plants and printing shops. A series of letters and fonts are assembled in a jig, either manually using an automated continuous casting machine or by preparing a metal mold etched according to the artwork. The complete jig or mold is then transferred to the printing position, where the overall stamping of, for example, the book title, author, report name, and number is simultaneously applied to the front and / or spine of the book.

[0003] In small-capacity manual hot stamping machines designed for, for example, 1-100 items, the operator stands on the machine and manually places the products in the correct position and orientation to perform stamping by observing the products from above while simultaneously lowering the stamping die onto the products using a lever mechanism. Typically, a trained operator is required to operate a manual hot stamping machine. Other semi-automatic stamping machines are calibrated using a "cut and try" method, which involves pre-aligning one or more alignment stops, placing one or more products to be stamped, and repeating the process by continuing to stamp products until the machine is aligned. This calibration method generates production waste and may only be suitable for large-capacity applications.

[0004] Now for reference Figure 1 The illustration schematically depicts a hot stamping machine 10 as disclosed in British patent application GB1609461.7. The hot stamping machine 10 does not require a skilled worker to position and orient the article to be printed, and no production waste occurs during calibration.

[0005] A hot stamping machine 10, according to US Patent 9649874B2 and UK Patent Application GB1609461.7, operates in conjunction with a computer system including a camera and a display. The computer system can be configured to capture an image of the article by the camera prior to stamping and to display that image on the display. Before stamping on the article, the user uses the computer system to select a symbol. The user uses the computer system to position the selected symbol as a symbol superimposed on the image of the article.

[0006] The embossing machine can be pre-calibrated to perform embossing of an article positioned and oriented in the same location and orientation as the symbol shown on the superimposed image of the article presented to the user before embossing. Brief Overview This paper discloses various printing presses including planetary mechanisms. The planetary mechanism comprises components circumferentially distributed around a central revolution axis with a given radius. I One (or more) mold base. I More than one planetary gear is connected to each of the following: I One mold base, I planetary gears and I Each mold base shares a corresponding planetary rotation axis and is configured to rotate together around the planetary rotation axis. The planetary rotation axis is configured to revolve around a central revolution axis. I Each of the mold bases includes N i Multiple molds are used to stamp different widths of material. N i More than one character. Based on the corresponding character width, the molds are arranged asymmetrically at an angle on the mold base to maximize the number of molds on the mold base. N i ·I maximize. N i The corresponding mounting surface of each mold can be convex, with a varying curvature depending on the corresponding character width, to accommodate the number of molds on the mold holder. N i ·I Maximize. Character n j The following methods can be used for imprinting: From I Select the mold base. j The mold base, and the first j The first mold holder rotates around its planetary axis, causing the second mold holder to rotate. n Each character faces the positive radial direction outward from the central axis of revolution.

[0007] This document discloses various rotatable mold holders, each having a rotation axis. The rotatable mold holders include... N i Multiple (or more) dies are used to stamp different widths separately. N i More than one character. The number of characters depends on the corresponding character width on the impression head. N i The molds are distributed at an angular asymmetry to increase the number of molds on the rotatable mold holder. Ni maximize. N i The corresponding mounting surface of each mold can be convex, with varying curvature depending on the corresponding character width, to accommodate the number of molds on the rotatable mold holder. N i Maximize. The characters used for embossing can be selected based on the rotation angle around the rotation axis. N i The corresponding outer surface of the mold is not radially equidistant from the axis of rotation.

[0008] This document discloses various methods for selecting a die in an embossing machine. These methods are performed using a planetary mechanism, which includes... I More than one mold base, I The mold holders are distributed circumferentially around the central axis of revolution with a given radius. I More than one planetary gear is connected to each of the following: I One mold base, I planetary gears and I Each mold base shares a planetary rotation axis and is configured to rotate together around the planetary rotation axis. The planetary rotation axis is configured to revolve around a central revolution axis. I Each of the mold bases includes N i Multiple molds are used to stamp different widths of material. N i More than one character. Based on the corresponding character width, the molds are arranged in an angularly asymmetrical distribution on the mold base, thus increasing the number of molds on the mold base. N i ·I Maximize. By from I Select the mold base. j A mold base for selecting characters. n j For use in embossing. To make the first j Each mold holder rotates around its planetary axis, causing The jth On the mold base N j The first character n Each character faces the positive radial direction outward from the central axis of revolution. N i The corresponding mounting surface of each mold can be provided with a convex curvature that varies according to the corresponding character width, so as to adjust the number of molds on the mold base according to the corresponding character width. N i ·I maximize.

[0009] A central gear can be provided to mesh with planetary gears. The central gear can be configured to rotate about a central axis of revolution. A carrier can be configured to rotate about the central axis of revolution. A locking mechanism, when engaged, prevents the central gear from rotating, while the carrier is configured to rotate so that the planetary gears can revolve about the meshing central gear and about their respective planetary axes of rotation. When disengaged, the locking mechanism of the central gear can be configured to allow the central gear and the carrier to rotate together about the central axis of revolution, and to prevent the planetary gears from revolving about the meshing central gear.

[0010] This article discloses various printing presses that include planetary mechanisms. The planetary mechanism includes... I More than one mold base, I The mold holders are distributed circumferentially around the central axis of revolution with a given radius. I More than one planetary gear is connected to each of the following: I One mold base, I planetary gears and I Each mold base shares a corresponding planetary rotation axis and is configured to rotate together around the planetary rotation axis. The planetary rotation axis is configured to revolve around a central revolution axis. I Each of the mold bases includes N i Multiple molds are used to stamp different widths of material. N i More than one character. N i The corresponding mounting surface of the mold is a convex surface, thereby enabling imprinting from the corresponding outer surface to the mounting surface of the mold up to the full depth. At least a portion of the convex surface may include at least one of the following: a spherical surface, an elliptical surface, a parabolic surface, a hyperboloidal surface, and a polyhedral surface. Imprinting allows for the avoidance of contact between the mounting surface and the imprinted article.

[0011] Various methods for continuously engraving multiple characters using an embossing machine, including: providing an embossing machine with a planetary mechanism, the planetary mechanism comprising... I More than one mold base, I The mold holders are distributed circumferentially around the central axis of revolution with a given radius. I More than one planetary gear is connected to each of the following: I One mold base, I planetary gears and I Each mold base shares a planetary rotation axis and is configured to rotate together around the planetary rotation axis. The planetary rotation axis is configured to revolve around a central revolution axis. I Each of the mold bases includes Ni Multiple molds are used to stamp different widths of material. N i More than one character. N i The corresponding mounting surface of each mold is a convex surface. This allows for continuous indentation from the corresponding outer surface to the mounting surface of the mold up to the full depth. (Using...) N i The convex mounting surface of the mold can prevent contact between the outer perimeter of the mold and the product being imprinted. This can be used to... N i Each mold's corresponding mounting surface provides a convex curvature that varies according to the corresponding character width, thereby adjusting the number of molds on the mold holder according to the corresponding character width. N i ·I maximize. N i A mold can be I The mold holders are asymmetrically distributed at an angle, thus allowing the number of molds on each mold holder to be adjusted according to the corresponding character width. N i · I Maximize. The imprinting of different characters can be based on... N i The corresponding outer surfaces of each mold are executed at different depths, which are not equidistant from the radial axis of planetary rotation.

[0012] The above and / or other aspects will become apparent from the following detailed description when considered in conjunction with the accompanying drawings. Brief description of the attached diagram This invention has been described by way of example only with reference to the accompanying drawings, in which: Figure 1 A perspective view showing details of a hot stamping machine according to UK patent application publication GB1609461.7; Figure 2A and Figure 2B Isometric views of the top and bottom of an impression head are shown according to UK patent application publication GB1609461.7; Figure 3 A hot stamping machine according to features of the present invention is shown; Figure 4 It shows according to Figure 3 An exploded view of the printing head of an embodiment of the hot stamping machine shown; Figure 5A and Figure 5B A front view and an isometric view of an exemplary rotary mold holder having a planar mounting surface, according to features of the present invention, are shown respectively; Figure 6An impression head with features according to the invention is shown; Figure 7A and Figure 7B A front view and an isometric view of an exemplary rotary mold holder with a convex curved mounting surface, according to features of the present invention, are shown respectively; Figure 8 The use of the features according to the invention is shown. Figure 7A and Figure 7B Advantages of using a rotary mold holder with a convex curved mounting surface compared to using a rotary mold holder with a flat mounting surface; and Figure 9A and Figure 9B An exemplary rotary mold holder according to the features of the present invention is shown. Detailed description Reference will now be made in detail to the features of the invention, examples of which are shown in the accompanying drawings, wherein similar reference numerals throughout refer to similar elements. These features are described below with reference to the accompanying drawings to explain the invention.

[0013] Before explaining the features of the invention in detail, it should be understood that the invention is not intended to limit its application to the details of the design and arrangement of components set forth in the following description or shown in the accompanying drawings. The invention can be implemented or performed with other features or in different ways. Similarly, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered restrictive.

[0014] Now for reference Figure 1 The figure shows an isometric view illustrating details of a hot stamping machine 10 according to aspects of UK Patent Application Publication GB1609461.7. The stamping head 320 includes a planetary gear mechanism that allows selection of multiple characters 32. The planetary gear mechanism is further described in the following description and figures.

[0015] Still referencing Figure 2A and Figure 2B , Figure 2A and Figure 2B Isometric views of the impression head 320, according to an aspect of UK patent application publication GB1609461.7, are shown from top and bottom respectively. A carrier 87 is disposed between plates 89a and 89b and mechanically and thermally connects the impression head 320 to the housing 322. Figure 1The carrier 87 shown in the figure can be rotationally asymmetric to allow the impression head 320 to be mounted onto the housing 322 in a single orientation. Multiple rotatable mold holders 80 are shown. Each rotatable mold holder 80 is shown as a hexagonal prism with six rectangular faces, which are rotationally symmetric about an axis parallel to the hexagonal faces. Different molds for different fonts 32 or letters (e.g., lowercase and uppercase) can be mounted / engraved / cast / milled into the rectangular faces of the rotatable mold holder 80, respectively. The rotatable mold holder 80 can be shaped as a polygonal prism, for example, as an example, a triangle providing three rectangular faces for three different molds 32, a square providing four rectangular faces for four different molds 32, and an octagonal prism providing eight rectangular faces for eight different molds 32. Other geometries can be used for the mold holder 80, such as a cylinder, where portions supporting the outer surface of the mold 32 are milled or cast flat.

[0016] The rotatable mold base 80 can be rotatably attached between plates 89a and 89b and positioned and secured by screws (not shown) passing through countersunk screw holes 88 (Fig. 2b) in plate 89b and fastened in plate 89a and / or shaft 84, which is shared with planetary gears 86 respectively. The rotatable mold base 80 and the corresponding planetary gears 86 can rotate together about the corresponding axis or shaft 84.

[0017] Return to reference Figure 2A Planetary gear 86 is shown meshing with a center gear 85 with its teeth facing outwards. Fastener 82 holds the center gear 85 near plate 89a and can additionally connect plates 89a, 89b and carrier 87 together.

[0018] Pin 83 is shown extending into one of a plurality of holes distributed circumferentially along the central gear 85. Pin 83 represents a locking mechanism that prevents the central gear 85 from rotating. When pin 83 engages the corresponding hole in the central gear 85, the imprint head 320 is in font selection mode. Otherwise, pin 83 is shown in a non-engaged position, in which the central gear 85 rotates freely together with the carrier 87.

[0019] During font selection, pin 83 engages center gear 85, while drive shaft 324 ( Figure 1The rotating carrier 87 rotates about a central axis that coincides with the center axis of the central gear 85. The central gear 85 is held in place by a locking mechanism (e.g., by a pin 83 engaging the central gear 85) and prevents rotation of the central gear 85. However, the carrier 87, shown as being connected to plates 89a and 89b, is rotatable. The rotating carrier 87 drives the planetary axis 84 to rotate about the central axis, while the planetary gear 86 rotates individually about its respective axis 84 and further moves circumferentially about the central gear 85 by the action of meshing gears. As the planetary gear 86 rotates about its respective axis 84, the rotatable mold holder 80, which shares the same axis 84, also rotates, exposing a different font / character mold 32a for each mold holder 80.

[0020] After font selection, the locking mechanism (e.g., pin 83) disengages from the central gear 85. The disengagement of pin 83 releases the central gear 85, which is now mechanically attached to the carrier 87 via a locking mechanism or clutch mechanism. Hot stamping / printing can now be performed on the selected font; in some embodiments, this is achieved by the XY motion of the object to be printed and the vertical Z-motion of the impression head 320. Character selection of the exposed font / character 32 of the die holder 80 is performed by rotating the impression head 320 about the central axis.

[0021] As shown in the figure, the impression head 320, with twenty hexagonal movable die holders 80, can provide one hundred and twenty characters 32a. In some cases, it is desirable to have more than one hundred characters available on the impression head.

[0022] As an introduction, various embodiments of the present invention relate to improvements to hot stamping machines as described in British patent application GB1609461.7. Embodiments of the present invention aim to increase the number of characters available in the impression head 320 by releasing the constraint that the rotatable die holder 80 is a rotationally symmetric polygonal prism. Embodiments of the present invention utilize the fact that different characters of the same font and language have different widths. The uppercase letter “W” is wider than the lowercase letter “f”, and the lowercase letter “f” is wider than the colon “:”. In terms of the angle of the rotatable die holder about its axis of rotation, the wider characters (e.g., “W”) have a much larger angle than the colon. The rotatable die holder assembly can be optimized to increase the number of characters available on the impression head, but a trade-off is that the rotation angle of the rotatable die holder is not the same for each character, and the impression depth (impression movement in the Z direction) is not necessarily the same as in the case of a rotationally symmetric polygonal prism rotatable die holder. Other embodiments of the present invention involve mounting the die on a convex, curved mounting surface, rather than on the plane of the polygonal prism. Figure 8 The context describes the advantages of mounting the mold on a convex curved surface, which allows for a deeper embossing, while the background plane of the polygonal prism does not produce unwanted embossing on the dented article.

[0023] Now for reference Figure 3 This illustrates a new generation version of the hot stamping machine 30, which has functions similar to those of the hot stamping machine 10. According to an embodiment of the invention, the hot stamping machine 30 is equipped with an impression head 31. Reference is also made to... Figure 4 , Figure 4 An exploded isometric view of the impression head 31 is shown. The impression head 31 may be equipped with multiple rotating die holders 80A, which are different from... Figure 2A and Figure 2B The rotary mold holder 80 shown is configured to rotate about a corresponding planetary axis 84. Reference is also made to... Figure 5A and Figure 5B , Figure 5A and Figure 5B Further details of the rotary mold holder 80A according to the features of the present invention are shown. Figure 5A and Figure 5B A front view and an isometric view of an exemplary rotary mold holder 80A are shown, respectively. Although as Figure 2A and Figure 2B The rotatable mold holder 80 shown comprises a hexagonal prism with six congruent rectangular faces, exhibiting rotational symmetry about an axis 84 parallel to these faces. However, the rotatable mold holder 80A is shown as an asymmetrical heptagonal prism. Seven different embossing dies are mounted on a mounting surface 51. As an example, seven faces of unequal widths are shown. The widths w1, w2, and w3 of three faces are labeled, where width w1 is less than width w2, and width w2 is less than width w3. Unlike the rotatable mold holder 80, the mounting surface 51 of the mold is not radially equidistant from the axis 84, which coincides with the planetary rotation axis 84 shown in the embossing head 31. Figure 4 ) Still referencing Figure 6 , Figure 6 An impression head 31S according to features of the present invention is shown. The impression head 31S is equipped with a plurality of rotating die holders 80S, which are different from those of the present invention. Figure 2A and Figure 2B The rotary mold holder 80 shown is configured to rotate about a corresponding planetary axis 84. Reference is also made to... Figure 7A and Figure 7B , Figure 7A and Figure 7B Further details of the rotary mold holder 80S according to the features of the present invention are shown. Figure 7A and Figure 7BA front view and an isometric view of an exemplary rotating mold holder 80S are shown, characterized in that the mold is mounted on a convex bending mounting device 51S. Specifically, the mounting surface 51S may be cylindrically symmetrical for rotation about axis 84. The upper surface 53S of the mold may be radially equidistant from axis 84.

[0024] Still referencing Figure 8 , Figure 8 The advantages of using a rotary die holder 80S with a convex curved mounting surface 51S compared to a rotary die holder 80 or 80A with a flat mounting surface 51 are shown. As shown, when using a rotary die holder 80 to emboss characters, the flat mounting surface 51 may produce unintentional indentations on the material being embossed. However, when using a rotary die holder 80S to emboss characters, due to the convex curvature of the mounting surface 51S, a deeper indentation can be made, and the mounting surface 51S will not produce unintentional indentations on the material being embossed.

[0025] Now for reference Figure 9A and Figure 9B , Figure 9A and Figure 9B An exemplary rotary mold holder 80M according to features of the invention is shown. The mounting surface 51M in the rotary mold holder 80M may have varying curvature according to the corresponding character width, thereby increasing the number of molds on the rotary mold holder 80M. N i Maximize. The 80M rotary mold holder can be used in similar applications. Figure 6 In the impression head 31S shown, the rotary mold holder 80M replaces the rotary mold holder 80S. I Each of the 80M mold bases includes more than one N i One mold, used to stamp more than one of different widths. N i The number of dies on the die holder can be designed and selected according to the corresponding character width. N i · I Maximize. It is worth noting that the radial distance from the rotation axis 84 to the upper surface 53M is not necessarily the same, and the imprinting depth (e.g., vertical movement in the Z direction) may vary depending on the character being imprinted (or at least the width of the character being imprinted), and for each rotating die holder 80M, the exact rotation angle and depth of the imprint may differ from the previously stored values ​​for each imprinting head.

[0026] The indefinite articles “a” and “an” used in this article, such as “a mold base” and “a character”, mean “one or more”, that is, “one or more mold bases” and “one or more characters”.

[0027] As used in this article, the term "character" includes alphanumeric characters, letter and / or numeric characters, punctuation marks, and special characters.

[0028] The term "embossing" refers to the process of pressing an image onto the surface of a material, typically an imprint or embossing. The term "embossing," on the other hand, refers to an image raised from the surface of a material. The terms "imprint" and "embossing" are used interchangeably herein.

[0029] As used herein, the term "mold" refers to alphanumeric characters and / or special characters that are photo-etched, machined, or engraved on metal, polymer, or other materials for the purpose of continuous embossing.

[0030] The term "angular distribution" refers to a mold mounted on a rotating mold base, which can be selected by a known rotation angle.

[0031] The term "circumferential distribution" refers to the angular distribution of multiple die holders around a central axis of revolution at a given radius on the planetary impression head.

[0032] The term “symmetric” is used in this context in the context of angular distribution and refers to selecting a mold with an angular distribution by rotating a constant multiple of an angle. As an example, for a rotary mold holder 80 based on a hexagonal polygonal prism, mold 32 is selected with multiples of sixty degrees. As used herein, the term “asymmetric angular distribution” refers to a mold of a rotary mold holder that can be selected by angles that are not necessarily exact integer multiples of any angle.

[0033] In the context of “based on character width”, the term “based on” as used in this article refers to the asymmetrical distribution of the angles of the molds mounted on the rotary mold holder, where the angles used to select the appropriate mold vary based on the character width and other optional parameters.

[0034] Although selected features of the invention have been shown and described, it should be understood that the invention is not limited to the described features.

Claims

1. An embossing machine, comprising: Planetary mechanism, the planetary mechanism comprising: I One mold base, among which I Greater than 1, the I The mold holders are distributed circumferentially around the central axis of revolution with a given radius, among which I Each planetary gear is connected to the I A mold base, the I A planetary gear and the aforementioned I Each mold base shares a corresponding planetary rotation axis and is configured to rotate together around the planetary rotation axis, wherein the planetary rotation axis is configured to revolve around the central revolution axis; Among them, the I Each of the mold bases includes N i One mold, among which N i Greater than 1, the N i Each mold is used for stamping. N i Characters of varying widths, wherein the molds are angularly asymmetrically distributed according to the corresponding character widths, so as to increase the number of molds on the mold base. N i ·I maximize.

2. The embossing machine according to claim 1, wherein, The N i The corresponding mounting surface of each mold is convex, with a curvature varying according to the corresponding character width, to accommodate the number of molds on the mold holder. N i ·I maximize.

3. The embossing machine according to any one of claims 1 or 2, wherein, character n j It can be selected for use in imprinting in the following ways: from the I Select the mold base. j The mold base, and the first j The first mold holder rotates around its planetary axis, causing the second mold holder to rotate. n Each character faces the positive radial direction outward from the central axis of revolution.

4. The embossing machine according to any one of claims 1 or 2, further comprising: A central gear, configured to mesh with the planetary gears, and configured to rotate about the central revolution axis; A carrier component configured to rotate about the central revolution axis; A locking mechanism that prevents the central gear from rotating when engaged, while the carrier is configured to rotate so that the planetary gears can revolve around the meshing central gears and rotate around the respective planetary rotation axes.

5. A rotatable mold base having a rotation axis, the rotatable mold base comprising: N i One mold, among which N i Greater than 1, the N i Each mold is used to stamp different widths. N i 1 character, wherein the N i The molds are asymmetrically distributed at an angle on the imprint head according to the corresponding character width, so that the number of molds on the rotatable mold holder is [number missing]. N i maximize.

6. The rotatable mold base according to claim 5, wherein, The N i The corresponding mounting surface of each mold is convex, with a curvature varying according to the corresponding character width, so that the number of molds on the rotatable mold base is [number missing]. N i maximize.

7. The rotatable mold base according to claim 6, wherein, The character for embossing is selected based on the rotation angle about the rotation axis, wherein, N i The corresponding outer surface of the mold is not radially equidistant from the axis of rotation.

8. A method for selecting a die in an embossing machine, the method being performed using a planetary mechanism, the planetary mechanism comprising: I One mold base, among which I Greater than 1, the I The mold holders are distributed circumferentially around the central axis of revolution with a given radius, among which I Each planetary gear is connected to the I A mold base, the I A planetary gear and the aforementioned I Each mold base shares a planetary rotation axis and is configured to rotate together around a respective planetary rotation axis, wherein the planetary rotation axes are configured to revolve around the central revolution axis; wherein, the I Each of the mold bases includes N i One mold, among which N i Greater than 1, the N i Each mold is used to stamp different widths. N i The method, which involves the following steps, comprises: (characters) Based on the corresponding character width, the molds are arranged in an angularly asymmetrical distribution on the mold base, thereby increasing the number of molds on the mold base. N i ·I maximize; By from the I Select the mold base. j A mold base for selecting characters. n j For use in embossing; Make the first j Each mold holder rotates about its planetary rotation axis, such that the first... j On a mold base Nj The first character in the nth character n Each character faces the positive radial direction outward from the central axis of revolution.

9. The method according to claim 8, further comprising: For the N i The corresponding mounting surface of each mold provides a convex curvature that varies according to the corresponding character width, thereby increasing the number of molds on the mold holder. N i ·I maximize.

10. The method according to claim 8, wherein, Make the first j The rotation of the mold holder around the planetary rotation axis includes: A central gear is provided, the central gear being configured to mesh with the planetary gears, and the central gear being configured to rotate about the central revolution axis; The support element is configured to rotate about the central revolution axis; The central gear is locked by preventing it from rotating, while the carrier is driven to rotate and the planetary gears are able to revolve around the meshing central gears and rotate around their respective planetary axes.

11. The method of claim 8, further comprising: When the lock is released, the central gear and the carrier can rotate together around the central axis of revolution, and the planetary gears cannot revolve around the meshing central gear.

12. The method according to claim 8, further comprising: According to the above N i The corresponding outer surfaces of each mold are imprinted at different depths, which are not equidistant from the radial direction of the planetary rotation axis.

13. An embossing machine, comprising: Planetary mechanism, the planetary mechanism comprising: I One mold base, among which I Greater than 1, the I Several mold holders are circumferentially distributed around a central axis of revolution with a given radius, wherein... I Each planetary gear is connected to the I A mold base, the I A planetary gear and the aforementioned I Each mold base shares a planetary rotation axis and is configured to rotate together around the planetary rotation axis, wherein the planetary rotation axis is configured to revolve around the central revolution axis; wherein, I Each of the mold bases includes N i One mold, among which N i Greater than 1, the N i Each mold is used to stamp different widths. N i 1 character, wherein the N i The corresponding mounting surface of each mold is a convex surface, thereby enabling imprinting from the corresponding outer surface to the mounting surface of the mold up to the full depth.

14. The embossing machine according to claim 13, wherein, At least a portion of the convex surface includes at least one of the following: spherical surface, elliptical surface, parabolic surface, hyperboloid surface, and polyhedral surface.

15. The embossing machine according to claim 13, wherein, The convex mounting surface is configured to achieve embossing to avoid contact between the mounting surface and the embossed article.

16. A method for continuously embossing multiple alphanumeric characters using an embossing machine, the method comprising: The printing press is provided with a planetary mechanism, the planetary mechanism comprising: I One mold base, among which I Greater than 1, the I The mold holders are distributed circumferentially around the central axis of revolution with a given radius, among which I Each planetary gear is connected to the I A mold base, the I A planetary gear and the aforementioned I Each mold base shares a planetary rotation axis and is configured to rotate together around a respective planetary rotation axis, wherein the planetary rotation axes are configured to revolve around the central revolution axis; wherein, the I Each of the mold bases includes N i One mold, among which N i Greater than 1, the N i Each mold is used to stamp different widths. N i 1 character, wherein the N i The corresponding mounting surface of each mold is a convex surface; Achieve continuous indentation from the corresponding outer surface of the mold to the mounting surface up to the full depth.

17. The method according to claim 16, wherein, Achieving continuous embossing involves avoiding contact between the mounting surface on the outer periphery of the mold and the embossed article.

18. The method of claim 16, further comprising: For the N i Each mold's corresponding mounting surface provides a convex curvature that varies according to the corresponding character width, thereby allowing the number of molds on the mold holder to vary according to the corresponding character width. N i ·I maximize.

19. The method of claim 16, further comprising: Provided in I The mold bases are asymmetrically distributed at an angle. N i A number of molds, thereby adjusting the number of molds on the mold holder according to the corresponding character width. N i Maximize I.

Images