阅读说明：本技术 一种新型膜压印刷机 (Novel film-pressing printing machine ) 是由 袁红超 于 2021-04-25 设计创作，主要内容包括：本发明公开了一种新型膜压印刷机,包括：输送组件和膜压组件。所述膜压组件设于所述输送装置的上方。所述膜压组件包括：膜压辊筒、调节辊机构和辊筒调节驱动机构；所述调节辊机构沿上下方向活动安装于所述膜压组件顶部,所述调节辊机构的上侧转动安装有调节辊筒。所述膜压辊筒有两个,两个所述膜压辊筒分别前后排列设于所述膜压组件的底部,两个所述膜压辊筒的轴向均沿左右方向设置。所述辊筒调节驱动机构设有与所述调节辊机构传动连接、并使所述调节辊机构上下移动的升降驱动端。本发明的新型膜压印刷机通过膜压组件能够将印刷薄膜循环使用,减少浪费,节约成本。本发明可应用于印刷领域。(The invention discloses a novel film-pressing printing machine, which comprises: a conveying assembly and a film pressing assembly. The membrane pressing assembly is arranged above the conveying device. The membrane pressing assembly comprises: the film pressing roller, the adjusting roller mechanism and the roller adjusting driving mechanism; the adjusting roller mechanism is movably arranged at the top of the film pressing assembly along the up-down direction, and the upper side of the adjusting roller mechanism is rotatably provided with an adjusting roller. The film pressing roller assembly comprises two film pressing rollers, wherein the two film pressing rollers are arranged at the bottom of the film pressing assembly in a front-back mode respectively, and the two film pressing rollers are arranged in the left-right direction in the axial direction. The roller adjusting and driving mechanism is provided with a lifting driving end which is in transmission connection with the adjusting roller mechanism and enables the adjusting roller mechanism to move up and down. The novel film pressing printer can recycle the printed film through the film pressing assembly, thereby reducing waste and saving cost. The invention can be applied to the field of printing.)

1. The utility model provides a novel film-pressing printing machine which characterized in that: the method comprises the following steps: the conveying device comprises a conveying assembly (100), the conveying assembly (100) is provided with a conveying plane extending forwards and backwards and used for bearing and conveying foreign materials, the film pressing device comprises a film pressing assembly (200), and the film pressing assembly (200) is arranged above the conveying device;

the membrane press assembly (200) comprises: a film pressing roller mechanism, an adjusting roller mechanism and a roller adjusting driving mechanism (230); the die pressing roller mechanism comprises two film pressing rollers (211) and a film pressing roller driving unit (212) for driving the two film pressing rollers (211) to rotate, the two film pressing rollers (211) are respectively arranged at the bottom of the film pressing assembly (200) in a front-back manner, and the axial directions of the two film pressing rollers (211) are arranged along the left-right direction; the adjusting roller mechanism is movably arranged at the top of the film pressing assembly (200) along the vertical direction, and an adjusting roller (221) is rotatably arranged at the upper side of the adjusting roller mechanism; the roller adjusting and driving mechanism (230) is provided with a lifting driving end which is in transmission connection with the adjusting roller mechanism and enables the adjusting roller mechanism to move up and down.

2. The new film-press printing machine according to claim 1, characterized in that: the conveying device further comprises a fixing frame body (300), and the conveying assembly (100) is mounted on the fixing frame body (300); the film pressing device further comprises a movable rack (400), the film pressing assembly (200) is installed on the movable rack (400), the movable rack (400) is installed above the fixed rack body (300) in a sliding mode along the upper direction and the lower direction, the fixed rack body (300) is provided with a lifting driving mechanism (310) which is connected with the movable rack body (400) in a transmission mode and enables the movable rack body (400) to rotate relative to the fixed rack body (300) along the upper direction and the lower direction.

3. The new film-press printing machine according to claim 2, characterized in that: the lift drive mechanism includes:

a plurality of adjusting screws (311), wherein the plurality of adjusting screws (311) are axially arranged along the vertical direction and rotatably mounted on the fixed frame body (300);

the threaded sleeves (312) are fixedly arranged on the movable rack (400) and are sleeved on the adjusting screw rods (311) in a one-to-one corresponding coaxial threaded manner;

a transmission member (313), wherein the transmission member (313) is in transmission connection with the adjusting screw (311).

4. The new film-press printing machine according to claim 2, characterized in that: conveying subassembly (100) include many conveying rollers (110) and carry drive unit (120), many conveying roller (110) axial all along left right direction rotate install in fixed support body (300), many conveying roller (110) are arranged along the equidistance of fore-and-aft direction and are set up and mutual synchronization connects, carry drive unit (120) be equipped with conveying roller (110) transmission is connected, and makes conveying roller (110) pivoted carries the drive end.

5. The new film-press printing machine according to claim 2, characterized in that: the film pressing assembly (200) further comprises a film pressing frame body (240) installed on the movable rack (400), two film pressing rollers (211) are respectively rotatably installed on the front side and the rear side of the lower end of the film pressing frame body (240), the roller adjusting driving mechanism (230) is arranged on the upper side of the film pressing frame body (240), and the adjusting roller mechanism is arranged above the film pressing frame body (240).

6. The new film-pressing machine according to claim 5, characterized in that: the utility model discloses a film pressing machine, including activity frame (400), movable frame (400) are the longmen form, the left side of film pressing frame body (240) with activity frame (400) fixed connection, the right side of film pressing frame body (240) is equipped with connecting block (241), connecting block (241) with activity frame (400) releasable connection, connecting block (241) with be equipped with between activity frame (400) elastic cushion (410).

7. The new film-pressing machine according to claim 5, characterized in that: the adjusting roller mechanism comprises a roller lifting seat (222), and the adjusting roller (221) is rotatably arranged on the upper side of the roller lifting seat (222); the roller adjusting and driving mechanism (230) comprises a lifting driving unit (231), the lifting driving unit (231) is fixedly installed on the upper side of the film pressing frame body (240), and the lifting driving end is arranged on the lifting driving unit (231) and connected with the roller lifting seat (222).

8. The new film-press printing machine according to claim 7, characterized in that: the lifting driving end is rotationally connected with the middle part of the roller lifting seat (222), and the rotating shaft of the roller lifting seat (222) is arranged along the vertical direction; the roller adjusting and driving mechanism (230) further comprises a deviation rectifying driving unit (232), and the deviation rectifying driving unit (232) is provided with a deviation rectifying driving end which is in sliding shaft connection with the roller lifting seat (222) and enables the roller lifting seat (222) to rotate around the lifting driving end.

9. The new film-pressing machine according to claim 5, characterized in that: the film pressing assembly (200) further comprises a UV lamp tube (250), the UV lamp tube (250) is long-strip cylindrical, the length direction of the UV lamp tube is arranged along the left-right direction, and the UV lamp tube (250) is arranged between the two film pressing rollers (211) and is fixedly arranged on the film pressing frame body (240).

10. The new film-press printing machine according to claim 9, characterized in that: the membrane pressing assembly (200) further comprises a lampshade mechanism (260), the lampshade mechanism (260) comprises a light blocking lampshade (261) and a turnover driving member (262), the light blocking lampshade (261) is coaxially and rotatably installed on the outer side of the UV lamp tube (250), and the turnover driving member (262) is in transmission connection with the light blocking lampshade (261) and enables the light blocking lampshade (261) to rotate around the UV lamp tube (250).

Technical Field

The invention relates to the field of printing, in particular to a novel film-pressing printing machine.

Background

In the film pressing machine in the current market, the film arrangement method is that an unreeling winding drum and a reeling winding drum are respectively arranged on two sides of a film pressing device, a film enters a film pressing unit from the unreeling winding drum after passing through a series of rollers, the film is rolled up by the reeling winding unit after use, the film can be used only once, the waste is serious, and the film pressing machine is not environment-friendly.

Disclosure of Invention

The present invention is directed to a novel film-pressing machine that solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.

The technical scheme adopted for solving the technical problems is as follows:

a novel film-pressing printing machine comprising: the conveying device comprises a conveying assembly, the conveying assembly is provided with a conveying plane which extends forwards and backwards and is used for bearing and conveying the foreign materials, the film pressing device comprises a film pressing assembly, and the film pressing assembly is arranged above the conveying device;

the membrane pressing assembly comprises: the film pressing roller mechanism, the adjusting roller mechanism and the roller adjusting driving mechanism; the die pressing roller mechanism comprises two film pressing rollers and a film pressing roller driving unit for driving the two film pressing rollers to rotate, the two film pressing rollers are respectively arranged at the bottom of the film pressing assembly in a front-back manner, and the axial directions of the two film pressing rollers are arranged along the left-right direction; the adjusting roller mechanism is movably arranged at the top of the film pressing assembly along the vertical direction, and an adjusting roller is rotatably arranged on the upper side of the adjusting roller mechanism; the roller adjusting and driving mechanism is provided with a lifting driving end which is in transmission connection with the adjusting roller mechanism and enables the adjusting roller mechanism to move up and down.

The novel film pressing printer provided by the invention at least has the following beneficial effects: enabling transport of the printing material in a front-to-back direction through a transport plane of the transport assembly; the film pressing assembly can recycle the closed-loop printing film through the film pressing roller and the adjusting roller mechanism. The roller adjusting and driving mechanism can drive the adjusting roller mechanism to move up and down relative to the film pressing roller; when the printing film is replaced, the closed-loop printing film can be easily sleeved and wrapped on the outer sides of the film pressing roller and the adjusting roller; the printing film can be tensioned during printing. The two film pressing rollers arranged in tandem can enable the tensioned printing film to be parallel to the conveying plane so as to realize the synchronous action of the printing stock and the printing film, thereby achieving the purpose of printing. The novel film pressing printer can realize the recycling of the printed film, thereby greatly reducing the cost; meanwhile, the printing film can be simply and conveniently replaced, and the stability of the production efficiency is guaranteed.

As a further improvement of the above technical solution, the conveying device further comprises a fixing frame body, and the conveying assembly is mounted on the fixing frame body; the film pressing device further comprises a movable rack, the film pressing assembly is mounted on the movable rack, the movable rack is mounted above the fixed rack body in a sliding mode along the vertical direction, and the fixed rack body is provided with a lifting driving mechanism which is in transmission connection with the movable rack body and enables the movable rack body to be opposite to the fixed rack body and slides along the vertical direction. According to the technical scheme, the conveying assembly and the film pressing assembly are respectively installed on the fixed frame body and the movable frame, and the movable frame can move up and down relative to the fixed frame body through the lifting driving mechanism, so that the upper and lower spacing between the film pressing assembly and the conveying assembly can be adjusted according to the thickness of a printing stock.

As a further improvement of the above technical solution, the elevation driving mechanism includes: an adjusting screw, a threaded sleeve and a transmission member; the adjusting screws are arranged in the vertical direction in the axial direction and are rotatably mounted on the fixed frame body; the threaded sleeves are fixedly arranged on the movable rack and are sleeved on the adjusting screw rods in a one-to-one corresponding coaxial threaded manner; the transmission component is in transmission connection with the adjusting screw rod. According to the technical scheme, the adjusting screw and the threaded sleeve are respectively installed on the movable rack and the fixed rack, the adjusting screw and the threaded sleeve are in threaded connection with each other, the threaded connection depth is changed by rotating the adjusting screw, so that the distance between the movable rack and the fixed rack is changed, and the purpose of adapting to printing stocks with different thicknesses is achieved. The transmission component can synchronously connect a plurality of adjusting screws, so that the movable rack is stressed uniformly and stably when adjusted up and down.

As a further improvement of the above technical solution, the conveying assembly includes a plurality of conveying rollers and a conveying driving unit, the plurality of conveying rollers are axially and rotatably mounted on the fixing frame body along the left-right direction, the plurality of conveying rollers are arranged at equal intervals along the front-back direction and are synchronously connected with each other, and the conveying driving unit is provided with a conveying driving end which is in transmission connection with the conveying rollers and enables the conveying rollers to rotate. According to the technical scheme, the plurality of conveying rollers are arranged at equal intervals in the front-back direction to form the conveying plane, and the driving unit drives the plurality of conveying rollers to synchronously rotate, so that the printing stock can be stably conveyed on the conveying plane.

As a further improvement of the technical scheme, the film pressing assembly further comprises a film pressing frame body arranged on the movable frame, two film pressing rollers are respectively rotatably arranged on the front side and the rear side of the lower end of the film pressing frame body, the roller adjusting and driving mechanism is arranged on the upper side of the film pressing frame body, and the adjusting roller mechanism is arranged above the film pressing frame body. Through the technical scheme, the film pressing frame body can provide an installation support and a connection foundation for the film pressing roller, the adjusting roller mechanism and the roller adjusting driving mechanism; so that the film pressing component can slide up and down along with the movable rack, and the adjusting roller mechanism can move up and down relative to the film pressing roller.

As a further improvement of the technical scheme, the movable rack is in a gantry shape, the left side of the film pressing rack body is fixedly connected with the movable rack, the right side of the film pressing rack body is provided with a connecting block, the connecting block is detachably connected with the movable rack, and an elastic cushion block is arranged between the connecting block and the movable rack. Through above-mentioned technical scheme, when changing the printing film, except can be with the printing film around establishing at the membrane pressing subassembly and dock the closed loop that forms again, can also with the back is dismantled to the connecting block, embolias the printing film of closed loop in the membrane pressing subassembly from the right side of membrane pressing support body.

As a further improvement of the technical scheme, the adjusting roller mechanism comprises a roller lifting seat, and the adjusting roller is rotatably arranged on the upper side of the roller lifting seat; the roller adjusting and driving mechanism comprises a lifting driving unit which is fixedly arranged on the upper side of the film pressing frame body, and the lifting driving end is arranged on the lifting driving unit and connected with the roller lifting seat. Through the technical scheme, the adjusting roller is rotatably arranged on the roller lifting seat, so that when the lifting driving unit drives the roller lifting seat to move up and down, the adjusting roller can move along with the roller lifting seat and rotate around the axis of the adjusting roller; so that the printing film can be tensioned without affecting the circulating movement of the printing film.

As a further improvement of the technical scheme, the lifting driving end is rotatably connected with the middle part of the roller lifting seat, and the rotating shaft of the roller lifting seat is arranged along the vertical direction; the roller adjusting and driving mechanism further comprises a deviation rectifying driving unit which is provided with a deviation rectifying driving end which is in sliding shaft connection with the roller lifting seat and enables the roller lifting seat to rotate around the lifting driving end. According to the technical scheme, the lifting driving unit drives the roller lifting seat to move up and down, and meanwhile, the deviation rectifying driving unit drives the roller lifting seat to swing left and right around the middle of the roller lifting seat, so that the deviation rectifying function during circular motion of the printing film is realized.

As a further improvement of the technical scheme, the film pressing assembly further comprises a UV lamp tube, the UV lamp tube is in a long strip cylindrical shape, the length direction of the UV lamp tube is arranged along the left-right direction, and the UV lamp tube is arranged between the two film pressing rollers and is fixedly arranged on the film pressing frame body. UV lamps are ultraviolet lamps, which are mainly used to perform photochemical reactions or product curing, etc. using the characteristics of ultraviolet rays. Through above-mentioned technical scheme, the UV fluorescent tube can further promote the drying and the adhesion of UV printing ink printing, and each item performance of guarantee UV printing ink printing is up to standard.

As a further improvement of the above technical solution, the film pressing assembly further includes a lamp shade mechanism, the lamp shade mechanism includes a light blocking lamp shade and a flip driving member, the light blocking lamp shade is coaxially rotatably mounted on the outer side of the UV lamp tube, and the flip driving member is in transmission connection with the light blocking lamp shade and rotates the light blocking lamp shade around the UV lamp tube. Through the technical scheme, except the time of ultraviolet curing, the turnover driving component can drive the light blocking lampshade to rotate, so that ultraviolet rays generated by the UV lamp tube are shielded, and the phenomenon that a printing film or equipment parts are exposed to ultraviolet rays for a long time to reduce the service life is avoided.

Drawings

The invention is further described with reference to the accompanying drawings and examples;

fig. 1 is a perspective view of an embodiment of the novel film-pressing printing machine provided by the invention;

FIG. 2 is a front view of one embodiment of the novel film press provided by the present invention;

fig. 3 is a perspective view of an embodiment of the novel film-pressing printing machine provided by the invention;

FIG. 4 is a perspective view of one embodiment of the novel film press of the present invention;

fig. 5 is a partially enlarged view of fig. 4.

In the figure, 100, a conveying assembly, 110, a conveying roller, 120, a conveying driving unit, 200, a film pressing assembly, 211, a film pressing roller, 212, a film pressing roller driving unit, 221, an adjusting roller, 222, a roller lifting seat, 230, a roller adjusting driving mechanism, 231, a lifting driving unit, 232, a deviation rectifying driving unit, 240, a film pressing frame body, 241, a connecting block, 250, a UV lamp tube, 260, a lamp shade mechanism, 261, a light blocking lamp shade, 262, a turnover driving component, 300, a fixed frame body, 310, a lifting driving mechanism, 311, an adjusting screw rod, 312, a threaded sleeve, 313, a transmission component, 400, a movable frame, 410 and an elastic cushion block.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 5, the novel film press of the present invention makes the following examples:

a novel film-pressing printing machine comprising: a conveying device and a film pressing device.

The conveying device comprises: a stationary frame 300 and a conveyor assembly 100. The film pressing device includes: a movable frame 400 and a membrane press assembly 200.

The conveying assembly 100 is mounted on the fixed frame 300, and the film pressing assembly 200 is mounted on the movable frame 400. The movable frame 400 is slidably mounted above the fixed frame 300 in the up-down direction, and the fixed frame 300 is provided with a lifting driving mechanism 310 which is in transmission connection with the movable frame 400 and enables the movable frame 400 to slide in the up-down direction relative to the fixed frame 300. The lift drive mechanism includes: the plurality of adjusting screws 311 are axially arranged in the vertical direction and rotatably mounted on the fixed frame body 300, threaded sleeves 312 are fixedly mounted on the movable frame 400 and coaxially and threadedly sleeved on the adjusting screws 311 one by one, and transmission members 313 are in transmission connection with the plurality of adjusting screws 311.

The movable frame 400 slides up and down relative to the fixed frame 300 by the driving of the lifting driving mechanism. The transmission member 313 in this embodiment includes a reduction gearbox and a chain sprocket which are in transmission connection, the plurality of adjusting screws 311 are in synchronous transmission through the sprocket and the chain, the reduction gearbox can effectively reduce the input torque, the reduction gearbox drives or manually rotates the input end of the reduction gearbox, so that the plurality of adjusting screws 311 synchronously rotate, and the effect that the movable rack 400 slides up and down is achieved. In other embodiments, the plurality of adjusting screws 311 may be driven by gears, belts, or worm gears.

The conveying assembly 100 includes a plurality of conveying rollers 110 and a conveying driving unit 120. The plurality of conveying rollers 110 are axially and rotatably mounted on the fixing frame 300 in left and right directions. The plurality of conveying rollers 110 are arranged at equal intervals in the front-rear direction, so that the conveying assembly 100 has a conveying plane extending in the front-rear direction for carrying and conveying the foreign materials. The plurality of conveying rollers 110 are synchronously connected with each other, and the conveying driving unit 120 is provided with a conveying driving end which is in transmission connection with the conveying rollers 110 and rotates the conveying rollers 110.

The transport assembly 100 in this embodiment uses transport rollers 110 to transport the substrate, and in other embodiments, the transport assembly 100 may be in the form of a transport belt, a transport chain plate, or the like. The conveying driving unit 120 in this embodiment adopts a servo motor in consideration of convenience in controlling the speed and accuracy of conveying, and in other implementations, the conveying driving unit 120 may be a rotary driving element such as a stepping motor or a pneumatic motor.

The membrane pressing assembly 200 is disposed above the conveying assembly 100. The membrane press assembly 200 includes: a film holder body 240, a film pressure roller mechanism, an adjusting roller mechanism and a roller adjusting drive mechanism 230.

The movable rack 400 is in a gantry shape, the left side of the film pressing rack body 240 is fixedly connected with the movable rack 400, a connecting block 241 is arranged on the right side of the film pressing rack body 240, the connecting block 241 is detachably connected with the movable rack 400, and an elastic cushion block 410 is arranged between the connecting block 241 and the movable rack 400. The embossing roller mechanism includes two film pressing rollers 211 rotatably installed on the film pressing frame body 240 and a film pressing roller driving unit 212. Two the membrane presses the roller 211 to arrange respectively from beginning to end and locates the bottom of membrane pressure support body 240, two membrane presses roller 211 synchronous connection, and the axial all sets up along left right direction. The film pressing roller driving unit 212 is installed on the movable frame 400 and is in driving connection with the two film pressing rollers 211. The film pressing roller driving unit 212 in the present embodiment employs a servo motor in consideration of convenience in controlling the speed and accuracy of conveyance, and in other implementations, the translation driving unit may be a rotary driving element such as a stepping motor or a pneumatic motor.

The dancer rools mechanism locates the membrane pressure subassembly 200 top, the dancer rools mechanism includes: a roller lifting seat 222 and an adjusting roller 221 rotatably arranged on the upper side of the roller lifting seat 222.

The roller adjusting drive mechanism 230 includes: a lifting drive unit 231 and a deviation correction drive unit 232. The lifting driving unit 231 is fixedly installed at the upper side of the film holder body 240, and the lifting driving unit 231 is provided with a lifting driving end which is in transmission connection with the roller lifting seat 222 and enables the adjusting roller mechanism to move up and down. The lifting driving end is rotatably connected with the middle part of the lower side of the roller lifting seat 222, and the rotating shaft is arranged along the vertical direction. The deviation-correcting driving unit 232 is provided with a deviation-correcting driving end which is coupled with the left end of the roller lifting seat 222 in a sliding manner and enables the roller lifting seat 222 to rotate around the lifting driving end. The left end of the roller lifting seat 222 is provided with a connecting shaft axially arranged along the vertical direction, and the deviation correcting driving end is coaxially and slidably hinged with the connecting shaft.

The precision required by the deviation-rectifying feeding is high and needs to be adjusted steplessly, and the deviation-rectifying driving unit 232 in the embodiment adopts an electric push rod. In consideration of the risk of breaking the printing film, the lifting driving unit 231 in this embodiment is an air cylinder, and the air cylinder drives the roller lifting seat 222 to lift up and down, so as to tension the printing film. In other embodiments, the lifting driving unit 231 may be an electric push rod, a hydraulic push rod, a lead screw nut driving assembly, or other driving elements.

The membrane press assembly 200 also includes a UV lamp tube 250 and a lamp housing mechanism 260. UV lamp 250 is rectangular cylindric, its length direction sets up along the left and right directions, UV lamp 250 installs in two between the membrane pressure roller 211 and fixed mounting in membrane pressure frame body 240. The globe mechanism 260 includes: a light-blocking cover 261 and a flip driving member 262. The light blocking cover 261 is coaxially and rotatably installed at the outer side of the UV lamp tube 250, and the flip driving member 262 is in transmission connection with the light blocking cover 261 and enables the light blocking cover 261 to rotate around the UV lamp tube 250.

In the present embodiment, the tumble driving member 262 includes: a toothed push rod with teeth on the periphery is slidably connected to the film holder body 240, and the light blocking lampshade 261 is fixedly connected with a gear which is meshed and connected with the toothed push rod.

Referring to fig. 1 to 5, when using the novel film press of the present invention: first, the adjustment roller mechanism is driven to move down by the lifting driving unit 231, and a closed loop of a printing film is disposed on the film pressing assembly 200. Specifically, the open-loop printing film can be wrapped and wound outside the film pressing roller 211 and the adjusting roller 221, and then the interface is performed to form a closed loop; the connecting block 241 may be detached from the movable frame 400, and a closed loop of the printing film may be inserted from one side of the film pressing assembly 200.

Then, the lifting drive unit 231 drives the adjusting roller 221 to lift, and the printing film is tightly wound on the adjusting roller 221 and the two film pressing rollers 211. The distance between the movable frame 400 and the fixed frame 300 is adjusted by the lifting driving mechanism 310, so that the gap between the printing film between the two film pressing rollers 211 and the conveying plane can just allow the printing stock to pass through, and the printing stock can just be covered by the printing film during conveying.

During the process of conveying and printing, the deviation rectifying driving unit 232 controls the left and right deviation of the adjusting roller 221, so that the printing film can be kept not to deviate. The printing film between the two film pressing rollers 211 is irradiated through the UV lamp tube 250, so that the UV printing ink is better adhered and cured on the printing material. When the UV lamp 250 is not required to be irradiated, the light blocking shade 261 is driven to rotate by the flip driving member 262 to block the UV light.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.