阅读说明：本技术 一种连续式金属薄膜印刷装置 (Continuous metal film printing device ) 是由 刘彪 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种连续式金属薄膜印刷装置,包括壳体、第一固定架、印刷机构和第二固定架,壳体前侧设置有开口,壳体底部设置有支撑腿,第一固定架设置在壳体上端,第一固定架上转动放置有薄膜原材筒,第一固定架一侧设置有进料管,进料管竖向延伸至壳体内,用于导入薄膜原材至壳体内,印刷机构设置在壳体内部,用于对薄膜原材进行双面印刷,第二固定架设置在壳体上端,第二固定架上转动放置薄膜收卷筒,第二固定架一侧设置出料管,料管竖向延伸至壳体内,用于导出印刷薄膜至薄膜收卷筒上；本发明对薄膜原材进行双面印刷,印刷效果好、效率高、质量高。(The invention discloses a continuous metal film printing device which comprises a shell, a first fixing frame, a printing mechanism and a second fixing frame, wherein an opening is formed in the front side of the shell, supporting legs are arranged at the bottom of the shell, the first fixing frame is arranged at the upper end of the shell, a film raw material cylinder is rotatably placed on the first fixing frame, a feeding pipe is arranged on one side of the first fixing frame, the feeding pipe vertically extends into the shell and is used for guiding the film raw material into the shell, the printing mechanism is arranged inside the shell and is used for carrying out double-sided printing on the film raw material, the second fixing frame is arranged at the upper end of the shell, a film winding cylinder is rotatably placed on the second fixing frame, a discharging pipe is arranged on one side of the second fixing frame, and the feeding pipe vertically extends into the shell and is used for guiding a printed film to the film winding cylinder; the invention carries out double-sided printing on the film raw material, and has good printing effect, high efficiency and high quality.)

1. A continuous metal film printing apparatus, comprising:

the front side of the shell is provided with an opening, and the bottom of the shell is provided with supporting legs;

the film raw material feeding device comprises a first fixing frame, a second fixing frame and a feeding pipe, wherein the first fixing frame is arranged at the upper end of a shell, a film raw material cylinder is rotatably placed on the first fixing frame, the feeding pipe is arranged on one side of the first fixing frame, and the feeding pipe vertically extends into the shell and is used for guiding a film raw material into the shell;

the printing mechanism is arranged inside the shell and is used for carrying out double-sided printing on the film raw material; the printing mechanism comprises a transverse supporting plate arranged in the shell and a vertical supporting plate arranged at the upper end of the transverse supporting plate, a second rotating rod and a third rotating rod are arranged on the vertical supporting plate in a rotating mode, a first printing wheel is arranged at one end of the vertical supporting plate of the second rotating rod, a second printing wheel is arranged at one end, away from the vertical supporting plate, of the third rotating rod, a plurality of groups of printing bulges are arranged on the outer rings of the first printing wheel and the second printing wheel respectively, the film raw material penetrates between the first printing wheel and the second printing wheel to be subjected to double-sided printing, and a driving mechanism is arranged on the transverse supporting plate and used for driving the second rotating rod and the third rotating rod to rotate;

the second fixing frame is arranged at the upper end of the shell, the film winding drum is placed on the second fixing frame in a rotating mode, a discharging pipe is arranged on one side of the second fixing frame, and the discharging pipe vertically extends into the shell and is used for guiding the printing film to the film winding drum.

2. A continuous metal film printing apparatus as claimed in claim 1, wherein a transparent window is rotatably mounted to said opening.

3. A continuous metal film printing apparatus as claimed in claim 1, wherein said support legs are fixed to the ground by means of a connecting plate.

4. A continuous type apparatus for printing a metal thin film as claimed in claim 1, wherein the feed and discharge pipes are rotatably provided at top and bottom ends thereof with guide rollers.

5. The continuous metal film printing apparatus as claimed in claim 1, wherein the driving mechanism comprises a first rotating rod rotatably disposed on the lateral support plate and a driving source disposed on the outer wall of the housing, the output shaft of the driving source is drivingly connected to the first rotating rod, the first rotating rod is provided with a first worm section and a second worm section at an interval, the second rotating rod is fixedly connected to a first worm wheel, the third rotating rod is fixedly connected to a second worm wheel, the first worm wheel is engaged with the first worm section, and the second worm wheel is engaged with the second worm section.

6. The continuous metal film printing device as claimed in claim 5, wherein the first printing wheel and the second printing wheel are provided with connecting sleeves at inner sides thereof, the connecting sleeves are connected with the second rotating rod and the second rotating rod through pin shafts, and the first printing wheel and the second printing wheel can select different numbers of printing protrusions to adapt to printing requirements.

7. The continuous metal film printing apparatus as claimed in claim 6, wherein the second worm section is movably sleeved on the first rotating rod, a sliding groove is formed on an inner wall of the second worm end, a clamping block embedded in the sliding groove is arranged on the first rotating rod, and an adjusting mechanism is arranged on the transverse supporting plate, and the adjusting mechanism can adjust the position of the second worm section on the first rotating rod, so as to control the distance between the printing on one side of the film and the printing on the other side of the film.

8. The continuous metal film printing apparatus as claimed in claim 7, wherein the adjusting mechanism comprises a fixing plate disposed on the transverse supporting plate, the fixing plate is screwed with an adjusting rod, one end of the adjusting rod is provided with a rotating handle, the other end of the adjusting rod is abutted with a connecting fork rod, one end of the second worm section is provided with a ring groove, and the connecting fork rod extends transversely and is inserted into the ring groove.

9. A continuous metal film printing apparatus as claimed in claim 8, wherein a drive rod is provided at the bottom of the housing, the drive source output shaft and the drive rod are provided with drive wheels, two sets of drive wheels are sleeved with belts, and the drive rod and the film take-up roll are in meshing drive connection through a set of bevel gears.

10. Use of a continuous metal film printing apparatus according to claim 9, comprising in particular the steps of:

s1, selecting a first printing wheel and a second printing wheel which contain a certain number of printing bulges according to requirements, installing the first printing wheel on a second rotating rod through a pin shaft, and installing the second printing wheel on a third printing wheel through a pin shaft;

s2, rotating the adjusting rod through the rotating handle to enable the adjusting rod to horizontally move on the fixing plate, enabling the connecting rod to drive the second worm section to move on the first rotating rod through being inserted in the annular groove, adjusting the position, and controlling the distance between the printing of one surface of the film and the printing of the other surface of the film;

s3, placing the metal film raw material cylinder on a first fixing frame, enabling the metal film to enter the shell through a feeding pipe, pass through the space between a first printing wheel and a second printing wheel, pass out of a discharging pipe and be wound on a film winding cylinder;

s4, starting a driving source, wherein the driving source drives a film winding drum to rotate through a belt to wind the film, meanwhile, the driving source drives a first rotating rod to rotate, the first rotating rod is meshed with a first worm section through a first worm wheel, and a second worm wheel is meshed with a second worm wheel section to drive a second rotating rod and a third rotating rod to rotate, double-sided printing is carried out on the metal film, and the printed film is wound on the film winding drum.

Technical Field

The invention relates to the technical field of metal film printing, in particular to a continuous metal film printing device.

Background

Metal films are used worldwide for the protection and packaging of food, cosmetics and chemicals; the metal film for food can wrap food.

The metal film is printed according to the requirement after production, and the existing film printing device has low printing efficiency and low printing quality, so the invention provides a continuous metal film printing device capable of solving the problems.

Disclosure of Invention

The present invention is directed to a continuous metal film printing apparatus to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a continuous metal film printing apparatus comprising:

the front side of the shell is provided with an opening, and the bottom of the shell is provided with supporting legs;

the film raw material feeding device comprises a first fixing frame, a second fixing frame and a feeding pipe, wherein the first fixing frame is arranged at the upper end of a shell, a film raw material cylinder is rotatably placed on the first fixing frame, the feeding pipe is arranged on one side of the first fixing frame, and the feeding pipe vertically extends into the shell and is used for guiding a film raw material into the shell;

the printing mechanism is arranged inside the shell and is used for carrying out double-sided printing on the film raw material; the printing mechanism comprises a transverse supporting plate arranged in the shell and a vertical supporting plate arranged at the upper end of the transverse supporting plate, a second rotating rod and a third rotating rod are arranged on the vertical supporting plate in a rotating mode, a first printing wheel is arranged at one end of the vertical supporting plate of the second rotating rod, a second printing wheel is arranged at one end, away from the vertical supporting plate, of the third rotating rod, a plurality of groups of printing bulges are arranged on the outer rings of the first printing wheel and the second printing wheel respectively, the film raw material penetrates between the first printing wheel and the second printing wheel to be subjected to double-sided printing, and a driving mechanism is arranged on the transverse supporting plate and used for driving the second rotating rod and the third rotating rod to rotate;

the second fixing frame is arranged at the upper end of the shell, the film winding drum is placed on the second fixing frame in a rotating mode, a discharging pipe is arranged on one side of the second fixing frame, and the discharging pipe vertically extends into the shell and is used for guiding the printing film to the film winding drum.

As a preferable technical solution of the present invention, a transparent observation window is rotatably installed on the opening.

As a preferable technical scheme of the invention, the supporting legs are fixedly connected with the ground through connecting plates.

As a preferable technical scheme, the top ends and the bottom ends of the feeding pipe and the discharging pipe are respectively and rotatably provided with a material guide roller.

As a preferable technical solution of the present invention, the driving mechanism includes a first rotating rod rotatably disposed on the transverse support plate, and a driving source disposed on an outer wall of the housing, an output shaft of the driving source is drivingly connected to the first rotating rod, the first rotating rod is provided with a first worm section and a second worm section at an interval, the second rotating rod is fixedly connected to a first worm wheel, the third rotating rod is fixedly connected to a second worm wheel, the first worm wheel is engaged with the first worm section, and the second worm wheel is engaged with the second worm section.

As a preferred technical scheme of the present invention, the inner sides of the first printing wheel and the second printing wheel are both provided with a connecting sleeve, the connecting sleeves are connected with the second rotating rod and the second rotating rod through pin shafts, and the first printing wheel and the second printing wheel can select different numbers of printing protrusions for adaptation according to printing requirements.

As a preferred technical solution of the present invention, the second worm section is movably sleeved on the first rotating rod, a sliding groove is arranged on an inner wall of an end of the second worm, a clamping block embedded in the sliding groove is arranged on the first rotating rod, and an adjusting mechanism is arranged on the transverse supporting plate, and the adjusting mechanism can adjust a position of the second worm section on the first rotating rod, so as to control a distance between one side of the film and the other side of the film.

As a preferred technical scheme of the present invention, the adjusting mechanism includes a fixing plate disposed on the transverse support plate, the fixing plate is screwed with an adjusting rod, one end of the adjusting rod is provided with a rotating handle, the other end of the adjusting rod is abutted with a connecting fork rod, one end of the second worm section is provided with a ring groove, and the connecting fork rod extends transversely and is inserted into the ring groove.

As a preferable technical scheme, the bottom of the shell is provided with a transmission rod, the output shaft of the driving source and the transmission rod are respectively provided with a transmission wheel, two groups of transmission wheels are sleeved with belts, and the transmission rod and the film winding drum are in meshing transmission connection through a bevel gear group.

The invention also provides an application of the continuous metal film printing device, which specifically comprises the following steps:

s1, selecting a first printing wheel and a second printing wheel which contain a certain number of printing bulges according to requirements, installing the first printing wheel on a second rotating rod through a pin shaft, and installing the second printing wheel on a third printing wheel through a pin shaft;

s2, rotating the adjusting rod through the rotating handle to enable the adjusting rod to horizontally move on the fixing plate, enabling the connecting rod to drive the second worm section to move on the first rotating rod through being inserted in the annular groove, adjusting the position, and controlling the distance between the printing of one surface of the film and the printing of the other surface of the film;

s3, placing the metal film raw material cylinder on a first fixing frame, enabling the metal film to enter the shell through a feeding pipe, pass through the space between a first printing wheel and a second printing wheel, pass out of a discharging pipe and be wound on a film winding cylinder;

s4, starting a driving source, wherein the driving source drives a film winding drum to rotate through a belt to wind the film, meanwhile, the driving source drives a first rotating rod to rotate, the first rotating rod is meshed with a first worm section through a first worm wheel, and a second worm wheel is meshed with a second worm wheel section to drive a second rotating rod and a third rotating rod to rotate, double-sided printing is carried out on the metal film, and the printed film is wound on the film winding drum.

Compared with the prior art, the invention has the beneficial effects that: according to the continuous metal film printing device, the driving mechanism drives the second rotating rod and the third rotating rod to rotate, the first printing wheel and the second printing wheel are driven to rotate oppositely, double-sided printing of a film raw material is achieved, and the continuous metal film printing device is good in printing effect, high in efficiency and high in quality.

The invention also has the following advantages:

1. the feeding pipe and the discharging pipe have a limiting effect on the metal film entering the shell, and the metal film is guided by the feeding pipe and the discharging pipe through the arranged guide rollers, so that the metal film can be continuously and stably fed and discharged during printing, position deviation is not easy to occur, and the printing arrangement quality is high; the printing condition in the shell can be observed in real time through the transparent observation window;

2. when the driving mechanism works, the driving source drives the film winding drum to rotate through the belt to wind the film, meanwhile, the driving source drives the first rotating rod to rotate, the first rotating rod is meshed with the first worm section through the first worm wheel, and the second worm wheel is meshed with the second worm wheel section to drive the second rotating rod and the third rotating rod to rotate, so that the first printing wheel and the second printing wheel are driven to rotate in opposite directions, double-sided printing is continuously performed on the metal film, and the printed film is wound on the film winding drum;

3. before printing, the first printing wheel and the second printing wheel can select different numbers of printing bulges to be matched according to printing requirements, and can also adjust and control the space between one side of the film and the other side of the film, when the space is adjusted, the driving source is firstly controlled to stop, the adjusting rod is rotated through the rotating handle from the opening at the front side of the shell to horizontally move on the fixing plate, the connecting rod is inserted on the annular groove to drive the second worm section to move on the first rotating rod, the position is adjusted, and the space between one side of the film and the other side of the film is controlled; the adjusting rod is screwed on the fixing plate, so that after the second worm section moves along the clamping block on the first moving rod through the sliding groove, the position can be self-locked, the stability is kept, and the printing intervals of the front side and the back side of the metal film are always kept consistent; and the connecting fork rod is inserted in the annular groove, so that when the driving source drives the first rotating rod to rotate, the rotation of the second worm section cannot be influenced, and the double-sided printing interval control of the adjusting mechanism on the metal film is realized.

Drawings

FIG. 1 is a schematic view of the external overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of a printing mechanism according to the present invention;

FIG. 4 is a schematic view of the present invention after the vertical support plate is removed from FIG. 3;

FIG. 5 is a schematic view of the connection of the adjustment mechanism of the present invention to the second worm section;

FIG. 6 is a schematic view of a second worm section of the present invention;

FIG. 7 is a schematic view of the connecting yoke according to the present invention;

FIG. 8 is a schematic view of a first mounting bracket mechanism of the present invention;

FIG. 9 is a schematic view of a second mounting bracket mechanism of the present invention;

in the figure: 100. a housing; 110. a transparent viewing window; 120. supporting legs; 121. a base plate; 130. a first fixing frame; 131. a film log tube; 132. a feed pipe; 140. a second fixing frame; 141. a film take-up roll; 142. a discharge pipe; 150. a material guide roller; 200. a printing mechanism; 210. a transverse support plate; 220. a vertical support plate; 230. a second rotating lever; 231. a first printing wheel; 232. a first worm gear; 240. a third rotating rod; 241. a second printing wheel; 242. a second worm gear; 250. printing a bump; 300. a drive mechanism; 310. a first rotating lever; 311. a clamping block; 320. a first worm section; 330. a second worm section; 331. a ring groove; 340. a drive source; 341. a transmission rod; 342. a belt; 343. a bevel gear set; 350. an adjustment mechanism; 351. a fixing plate; 352. adjusting a rod; 353. rotating the handle; 354. and a fork rod is connected.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to the drawings in the context of figures 1-9,

example 1

The invention provides a technical scheme that: a continuous metal film printing device comprises a shell 100, wherein an opening is arranged on the front side of the shell 100, supporting legs 120 are arranged at the bottom of the shell 100, and base plates 121 are arranged at the lower ends of the supporting legs 120;

the film material feeding device comprises a first fixing frame 130, wherein the first fixing frame 130 is arranged at the upper end of the shell 100, a film material cylinder 131 is rotatably placed on the first fixing frame 130, a feeding pipe 132 is arranged on one side of the first fixing frame 130, and the feeding pipe 132 vertically extends into the shell 100 and is used for guiding a film material into the shell 100;

a printing mechanism 200, the printing mechanism 200 is arranged inside the casing 100 and is used for performing double-sided printing on the film raw material; the printing mechanism 200 comprises a transverse support plate 210 arranged inside the casing 100 and a vertical support plate 220 arranged at the upper end of the transverse support plate 210, a second rotating rod 230 and a third rotating rod 240 are arranged on the vertical support plate 220 in a rotating manner, a first printing wheel 231 is arranged at one end of the vertical support plate of the second rotating rod 230, a second printing wheel 241 is arranged at one end of the third rotating rod 240 far away from the vertical support plate, a plurality of groups of printing protrusions 250 are respectively arranged on the outer rings of the first printing wheel 231 and the second printing wheel 241, a film raw material passes through the space between the first printing wheel 231 and the second printing wheel 241 for double-sided printing, and a driving mechanism 300 is arranged on the transverse support plate 210 and used for driving the second rotating rod 230 and the third rotating rod 240 to rotate;

the second fixing frame 140 is arranged at the upper end of the casing 100, the film winding drum 141 is rotatably placed on the second fixing frame 140, the discharge pipe 142 is arranged on one side of the second fixing frame 140, and the discharge pipe vertically extends into the casing 100 and is used for guiding the printing film to the film winding drum 141.

Specifically, the metal film raw material cylinder 131 is placed on the first fixing frame 130, so that the metal film enters the casing 100 through the feeding pipe 132, passes through the space between the first printing wheel 231 and the second printing wheel 241, and then passes out of the discharging pipe 142 to be wound on the film winding cylinder 141, the driving mechanism 300 drives the second rotating rod 230 and the third rotating rod 240 to rotate, so as to drive the first printing wheel 231 and the second printing wheel 241 to rotate in opposite directions, so that double-sided printing of the film raw material is realized, and the printing effect is good, the efficiency is high, and the quality is high.

Example 2

On the basis of embodiment 1, the transparent observation window 110 is rotatably installed on the opening, the supporting leg 120 is fixedly connected with the ground through a connecting plate, and the top and the bottom of the feeding pipe 132 and the discharging pipe 142 are rotatably installed with the guide roller 150.

Specifically, the feeding pipe 132 and the discharging pipe 142 limit the metal thin film entering the casing 100, and the metal thin film is guided by the feeding pipe 132 and the discharging pipe 142 through the arranged guide roller 150, so that the metal thin film is continuously and stably fed and discharged during printing, position deviation is not easy to occur, and the printing arrangement quality is high; the printing condition in the casing 100 can be observed in real time through the transparent observation window 110.

Example 3

On the basis of embodiment 1 or embodiment 2, the driving mechanism 300 includes a first rotating rod 310 rotatably disposed on the transverse supporting plate 210 and a driving source 340 disposed on the outer wall of the housing 100, an output shaft of the driving source 340 is drivingly connected to the first rotating rod 310, the first rotating rod 310 is provided with a first worm section 320 and a second worm section 330 at intervals, the second rotating rod 230 is fixedly connected with a first worm wheel 232, the third rotating rod 240 is fixedly connected with a second worm wheel 242, the first worm wheel 232 is engaged with the first worm section 320, and the second worm wheel is engaged with the second worm section 242;

connecting sleeves are arranged on the inner sides of the first printing wheel 231 and the second printing wheel 241 and are connected with the second rotating rod 230 and the second rotating rod 230 through pin shafts, and different numbers of printing protrusions 250 can be selected for matching according to printing requirements for the first printing wheel 231 and the second printing wheel 241;

the second worm section 330 is movably sleeved on the first rotating rod 310, a sliding groove is formed in the inner wall of the end of the second worm, a clamping block 311 embedded into the sliding groove is arranged on the first rotating rod 310, an adjusting mechanism 350 is arranged on the transverse supporting plate 210, and the adjusting mechanism 350 can adjust the position of the second worm section 330 on the first rotating rod 310 and is used for controlling the distance between the printing of one surface of the film and the printing of the other surface of the film;

the adjusting mechanism 350 comprises a fixing plate 351 arranged on the transverse supporting plate 210, the fixing plate 351 is screwed with an adjusting rod 352, one end of the adjusting rod 352 is provided with a rotating handle 353, the other end of the adjusting rod 352 is abutted with a connecting fork rod 354, one end of the second worm section 330 is provided with a circular groove 331, and the connecting fork rod 354 extends transversely and is inserted into the circular groove 331; the bottom of the housing 100 is provided with a transmission rod 341, the output shaft of the driving source 340 and the transmission rod 341 are provided with transmission wheels, two groups of transmission wheels are sleeved with belts 342, and the transmission rod 341 and the film winding drum 141 are in meshing transmission connection through a bevel gear group 343.

Specifically, when the driving mechanism 300 works, the driving source 340 drives the film winding drum 141 to rotate through the belt 342 to wind the film, and meanwhile, the driving source 340 drives the first rotating rod 310 to rotate, the first rotating rod 310 is meshed with the first worm section 320 through the first worm wheel 232, and the second worm wheel is meshed with the second worm wheel 242 section to drive the second rotating rod 230 and the third rotating rod 240 to rotate, so as to drive the first printing wheel 231 and the second printing wheel 241 to rotate in opposite directions, so that the metal film is continuously subjected to double-sided printing, and the printed film is wound on the film winding drum 141; before printing, the first printing wheel 231 and the second printing wheel 241 can select different numbers of printing protrusions 250 for adaptation according to printing requirements, and can also adjust and control the distance between one side of the film and the other side of the film, when adjusting the distance, the driving source 340 is firstly controlled to stop, the adjusting rod 352 is rotated through the rotating handle 353 from the opening at the front side of the shell 100, the adjusting rod 352 is enabled to horizontally move on the fixing plate 351, the connecting rod is enabled to be inserted on the ring groove 331 to drive the second worm section 330 to move on the first rotating rod 310, position adjustment is carried out, and the distance between one side of the film and the other side of the film is controlled; the adjusting rod 352 is screwed on the fixing plate 351, so that the position of the second worm section 330 can be self-locked after the first moving rod moves along the fixture block 311 through the sliding groove, the stability is kept, and the printing intervals of the front side and the back side of the metal film are always kept consistent; and the connection fork rod 354 is inserted in the circular groove 331, when the driving source 340 drives the first rotating rod 310 to rotate, the rotation of the second worm section 330 is not affected, thereby realizing the double-sided printing interval control of the adjusting mechanism 350 on the metal film.

Example 4

The invention also provides an application of the continuous metal film printing device, which specifically comprises the following steps:

s1, selecting a first printing wheel 231 and a second printing wheel 241 having a certain number of printing protrusions 250 according to requirements, mounting the first printing wheel 231 on the second rotating rod 230 through a pin, and mounting the second printing wheel 241 on the third printing wheel through a pin;

s2, rotating the adjusting rod 352 through the rotating handle 353, enabling the adjusting rod 352 to horizontally move on the fixing plate 351, enabling the connecting rod to be inserted in the ring groove 331 to drive the second worm section 330 to move on the first rotating rod 310, and adjusting the position to control the distance between the printing of one surface of the film and the printing of the other surface of the film;

s3, placing the metal film raw material cylinder 131 on the first fixing frame 130, so that the metal film enters the housing 100 through the feeding pipe 132, passes through the space between the first printing wheel 231 and the second printing wheel 241, and then passes out of the discharging pipe 142 to be wound on the film winding drum 141;

s4, start the driving source 340, the driving source 340 drives the film winding roll 141 to rotate through the belt 342, and winds the film, meanwhile, the driving source 340 drives the first rotating rod 310 to rotate, the first rotating rod 310 is meshed with the first worm wheel section 320 through the first worm wheel 232, and the second worm wheel is meshed with the second worm wheel section 242 to drive the second rotating rod 230 and the third rotating rod 240 to rotate, thereby performing double-sided printing on the metal film, and winding the printed film on the film winding roll 141.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.